ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
David H Bromwich Lesheng Bai and Keith M Hines Polar Meteorology Group Byrd Polar Research
CenterThe Ohio State UniversityPlus Many Collaborators
PROTOTYPE OFTHE ARCTIC SYSTEM
REANALYSIS
PROTOTYPE OFTHE ARCTIC SYSTEM
REANALYSIS
Supported by NSF NOAA and DOE
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Outlinebull The Arctic System Reanalysis (ASR)
bull Polar WRF
bull Atmospheric Data Assimilation
bull Noah Land Surface Data Assimilation
bull Validation
bull ASR Results
bull The Arctic System Reanalysis (ASR)
bull Polar WRF
bull Atmospheric Data Assimilation
bull Noah Land Surface Data Assimilation
bull Validation
bull ASR Results
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Arctic System Reanalysis Motivation
1 Rapid climate change is happening in the Arctic A comprehensive picture of the climate interactions is needed
2 Global reanalyses encounter many problems at high latitudes The ASR is using the best available depiction of Arctic processes at much higher spatial resolution
3 A system-oriented approach provides community focus with the atmosphere land surface and sea ice communities
4 The ASR provides a convenient synthesis of Arctic field programs (SHEBA LAIIATLAS ARM )
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR OutlineA physically-consistent integration of Arctic and other Northern Hemisphere data
Participants
Ohio State University - Byrd Polar Research Center (BPRC)
- and Ohio Supercomputer Center (OSC)National Center Atmospheric Research (NCAR)University of Colorado-Boulder University of Illinois at Urbana-Champaign
High resolution in space (10 km) and time (3 hours) Begin with years 2000-2010 (Earth Observing System)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 321)
Polar WRF(Version 321)
The key modifications for Polar WRF are Optimal turbulence (boundary layer) parameterization Implementation of fractional sea ice as well as variable thickness of sea ice and snow cover on sea ice in the Noah LSM Improved treatment of heat transfer for ice sheets and revised surface energy balance calculation in the Noah LSM Model evaluations through Polar WRF simulations over Greenland the Arctic Ocean (SHEBA site) and Alaska have been performed Polar WRF is used by forecasters as part of the National Science Foundation sponsored Antarctic Mesoscale Prediction System Polar WRF is used by ASR
The key modifications for Polar WRF are Optimal turbulence (boundary layer) parameterization Implementation of fractional sea ice as well as variable thickness of sea ice and snow cover on sea ice in the Noah LSM Improved treatment of heat transfer for ice sheets and revised surface energy balance calculation in the Noah LSM Model evaluations through Polar WRF simulations over Greenland the Arctic Ocean (SHEBA site) and Alaska have been performed Polar WRF is used by forecasters as part of the National Science Foundation sponsored Antarctic Mesoscale Prediction System Polar WRF is used by ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR WRF-3DVar WRF Modeling System
BackgroundError
(gen_be)
Nested WRF3h Forecast
xb
xaUpdate Lateralamp Lower BCs(UPDATE_BC)
BackgroundPreprocessing(WPS real)
xlbc
Cycled Background
B0
yo R
xf
WRF-3DVar
Global FieldsERA-Interim
Seasonal dependent
PREPBUFRRadiance BUFROther spec data
3h frequency
HRLDAS output
Verification ampVisualization
WRF-3DVar Analysis performed over one domain in a 3-h interval
Atmospheric Data Assimilation
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Aqua (AMSU AIRS)
NOAA (HIRS AMSU)
Atmospheric Data Assimilation
Observational Data for ASR
Atmospheric Data Assimilation
Observational Data for ASR
PREPBUFR from Jack Woollen (including synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw gpspw)
Radiances also from JWdifferent sensors (amsua amsub mhs hirs3 hirs4) in separate BUFR files
GPSGPSRO GPSIPW
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
High-Resolution Land Data Assimilation
System (HRLDAS) for ASR1048708
Blending atmospheric and land-surface observations with the Noah land surface model Eg MODIS surface albedo snow cover and vegetation characteristics
To provide land state variables for driving the coupled Polar WRFNoah modeling system ndash Soil moisture (liquid and solid phase) ndash Soil temperature ndash Snow water equivalent and depth ndash Canopy water content ndash Vegetation characteristics
To provide long-term evolution of the above variables plus surface hydrological cycle (runoff evaporation) and energy cycle (surface heat flux ground heat flux upward long-wave radiation)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationValidation
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Outlinebull The Arctic System Reanalysis (ASR)
bull Polar WRF
bull Atmospheric Data Assimilation
bull Noah Land Surface Data Assimilation
bull Validation
bull ASR Results
bull The Arctic System Reanalysis (ASR)
bull Polar WRF
bull Atmospheric Data Assimilation
bull Noah Land Surface Data Assimilation
bull Validation
bull ASR Results
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Arctic System Reanalysis Motivation
1 Rapid climate change is happening in the Arctic A comprehensive picture of the climate interactions is needed
2 Global reanalyses encounter many problems at high latitudes The ASR is using the best available depiction of Arctic processes at much higher spatial resolution
3 A system-oriented approach provides community focus with the atmosphere land surface and sea ice communities
4 The ASR provides a convenient synthesis of Arctic field programs (SHEBA LAIIATLAS ARM )
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR OutlineA physically-consistent integration of Arctic and other Northern Hemisphere data
Participants
Ohio State University - Byrd Polar Research Center (BPRC)
- and Ohio Supercomputer Center (OSC)National Center Atmospheric Research (NCAR)University of Colorado-Boulder University of Illinois at Urbana-Champaign
High resolution in space (10 km) and time (3 hours) Begin with years 2000-2010 (Earth Observing System)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 321)
Polar WRF(Version 321)
The key modifications for Polar WRF are Optimal turbulence (boundary layer) parameterization Implementation of fractional sea ice as well as variable thickness of sea ice and snow cover on sea ice in the Noah LSM Improved treatment of heat transfer for ice sheets and revised surface energy balance calculation in the Noah LSM Model evaluations through Polar WRF simulations over Greenland the Arctic Ocean (SHEBA site) and Alaska have been performed Polar WRF is used by forecasters as part of the National Science Foundation sponsored Antarctic Mesoscale Prediction System Polar WRF is used by ASR
The key modifications for Polar WRF are Optimal turbulence (boundary layer) parameterization Implementation of fractional sea ice as well as variable thickness of sea ice and snow cover on sea ice in the Noah LSM Improved treatment of heat transfer for ice sheets and revised surface energy balance calculation in the Noah LSM Model evaluations through Polar WRF simulations over Greenland the Arctic Ocean (SHEBA site) and Alaska have been performed Polar WRF is used by forecasters as part of the National Science Foundation sponsored Antarctic Mesoscale Prediction System Polar WRF is used by ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR WRF-3DVar WRF Modeling System
BackgroundError
(gen_be)
Nested WRF3h Forecast
xb
xaUpdate Lateralamp Lower BCs(UPDATE_BC)
BackgroundPreprocessing(WPS real)
xlbc
Cycled Background
B0
yo R
xf
WRF-3DVar
Global FieldsERA-Interim
Seasonal dependent
PREPBUFRRadiance BUFROther spec data
3h frequency
HRLDAS output
Verification ampVisualization
WRF-3DVar Analysis performed over one domain in a 3-h interval
Atmospheric Data Assimilation
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Aqua (AMSU AIRS)
NOAA (HIRS AMSU)
Atmospheric Data Assimilation
Observational Data for ASR
Atmospheric Data Assimilation
Observational Data for ASR
PREPBUFR from Jack Woollen (including synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw gpspw)
Radiances also from JWdifferent sensors (amsua amsub mhs hirs3 hirs4) in separate BUFR files
GPSGPSRO GPSIPW
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
High-Resolution Land Data Assimilation
System (HRLDAS) for ASR1048708
Blending atmospheric and land-surface observations with the Noah land surface model Eg MODIS surface albedo snow cover and vegetation characteristics
To provide land state variables for driving the coupled Polar WRFNoah modeling system ndash Soil moisture (liquid and solid phase) ndash Soil temperature ndash Snow water equivalent and depth ndash Canopy water content ndash Vegetation characteristics
To provide long-term evolution of the above variables plus surface hydrological cycle (runoff evaporation) and energy cycle (surface heat flux ground heat flux upward long-wave radiation)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationValidation
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Arctic System Reanalysis Motivation
1 Rapid climate change is happening in the Arctic A comprehensive picture of the climate interactions is needed
2 Global reanalyses encounter many problems at high latitudes The ASR is using the best available depiction of Arctic processes at much higher spatial resolution
3 A system-oriented approach provides community focus with the atmosphere land surface and sea ice communities
4 The ASR provides a convenient synthesis of Arctic field programs (SHEBA LAIIATLAS ARM )
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR OutlineA physically-consistent integration of Arctic and other Northern Hemisphere data
Participants
Ohio State University - Byrd Polar Research Center (BPRC)
- and Ohio Supercomputer Center (OSC)National Center Atmospheric Research (NCAR)University of Colorado-Boulder University of Illinois at Urbana-Champaign
High resolution in space (10 km) and time (3 hours) Begin with years 2000-2010 (Earth Observing System)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 321)
Polar WRF(Version 321)
The key modifications for Polar WRF are Optimal turbulence (boundary layer) parameterization Implementation of fractional sea ice as well as variable thickness of sea ice and snow cover on sea ice in the Noah LSM Improved treatment of heat transfer for ice sheets and revised surface energy balance calculation in the Noah LSM Model evaluations through Polar WRF simulations over Greenland the Arctic Ocean (SHEBA site) and Alaska have been performed Polar WRF is used by forecasters as part of the National Science Foundation sponsored Antarctic Mesoscale Prediction System Polar WRF is used by ASR
The key modifications for Polar WRF are Optimal turbulence (boundary layer) parameterization Implementation of fractional sea ice as well as variable thickness of sea ice and snow cover on sea ice in the Noah LSM Improved treatment of heat transfer for ice sheets and revised surface energy balance calculation in the Noah LSM Model evaluations through Polar WRF simulations over Greenland the Arctic Ocean (SHEBA site) and Alaska have been performed Polar WRF is used by forecasters as part of the National Science Foundation sponsored Antarctic Mesoscale Prediction System Polar WRF is used by ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR WRF-3DVar WRF Modeling System
BackgroundError
(gen_be)
Nested WRF3h Forecast
xb
xaUpdate Lateralamp Lower BCs(UPDATE_BC)
BackgroundPreprocessing(WPS real)
xlbc
Cycled Background
B0
yo R
xf
WRF-3DVar
Global FieldsERA-Interim
Seasonal dependent
PREPBUFRRadiance BUFROther spec data
3h frequency
HRLDAS output
Verification ampVisualization
WRF-3DVar Analysis performed over one domain in a 3-h interval
Atmospheric Data Assimilation
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Aqua (AMSU AIRS)
NOAA (HIRS AMSU)
Atmospheric Data Assimilation
Observational Data for ASR
Atmospheric Data Assimilation
Observational Data for ASR
PREPBUFR from Jack Woollen (including synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw gpspw)
Radiances also from JWdifferent sensors (amsua amsub mhs hirs3 hirs4) in separate BUFR files
GPSGPSRO GPSIPW
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
High-Resolution Land Data Assimilation
System (HRLDAS) for ASR1048708
Blending atmospheric and land-surface observations with the Noah land surface model Eg MODIS surface albedo snow cover and vegetation characteristics
To provide land state variables for driving the coupled Polar WRFNoah modeling system ndash Soil moisture (liquid and solid phase) ndash Soil temperature ndash Snow water equivalent and depth ndash Canopy water content ndash Vegetation characteristics
To provide long-term evolution of the above variables plus surface hydrological cycle (runoff evaporation) and energy cycle (surface heat flux ground heat flux upward long-wave radiation)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationValidation
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR OutlineA physically-consistent integration of Arctic and other Northern Hemisphere data
Participants
Ohio State University - Byrd Polar Research Center (BPRC)
- and Ohio Supercomputer Center (OSC)National Center Atmospheric Research (NCAR)University of Colorado-Boulder University of Illinois at Urbana-Champaign
High resolution in space (10 km) and time (3 hours) Begin with years 2000-2010 (Earth Observing System)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 321)
Polar WRF(Version 321)
The key modifications for Polar WRF are Optimal turbulence (boundary layer) parameterization Implementation of fractional sea ice as well as variable thickness of sea ice and snow cover on sea ice in the Noah LSM Improved treatment of heat transfer for ice sheets and revised surface energy balance calculation in the Noah LSM Model evaluations through Polar WRF simulations over Greenland the Arctic Ocean (SHEBA site) and Alaska have been performed Polar WRF is used by forecasters as part of the National Science Foundation sponsored Antarctic Mesoscale Prediction System Polar WRF is used by ASR
The key modifications for Polar WRF are Optimal turbulence (boundary layer) parameterization Implementation of fractional sea ice as well as variable thickness of sea ice and snow cover on sea ice in the Noah LSM Improved treatment of heat transfer for ice sheets and revised surface energy balance calculation in the Noah LSM Model evaluations through Polar WRF simulations over Greenland the Arctic Ocean (SHEBA site) and Alaska have been performed Polar WRF is used by forecasters as part of the National Science Foundation sponsored Antarctic Mesoscale Prediction System Polar WRF is used by ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR WRF-3DVar WRF Modeling System
BackgroundError
(gen_be)
Nested WRF3h Forecast
xb
xaUpdate Lateralamp Lower BCs(UPDATE_BC)
BackgroundPreprocessing(WPS real)
xlbc
Cycled Background
B0
yo R
xf
WRF-3DVar
Global FieldsERA-Interim
Seasonal dependent
PREPBUFRRadiance BUFROther spec data
3h frequency
HRLDAS output
Verification ampVisualization
WRF-3DVar Analysis performed over one domain in a 3-h interval
Atmospheric Data Assimilation
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Aqua (AMSU AIRS)
NOAA (HIRS AMSU)
Atmospheric Data Assimilation
Observational Data for ASR
Atmospheric Data Assimilation
Observational Data for ASR
PREPBUFR from Jack Woollen (including synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw gpspw)
Radiances also from JWdifferent sensors (amsua amsub mhs hirs3 hirs4) in separate BUFR files
GPSGPSRO GPSIPW
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
High-Resolution Land Data Assimilation
System (HRLDAS) for ASR1048708
Blending atmospheric and land-surface observations with the Noah land surface model Eg MODIS surface albedo snow cover and vegetation characteristics
To provide land state variables for driving the coupled Polar WRFNoah modeling system ndash Soil moisture (liquid and solid phase) ndash Soil temperature ndash Snow water equivalent and depth ndash Canopy water content ndash Vegetation characteristics
To provide long-term evolution of the above variables plus surface hydrological cycle (runoff evaporation) and energy cycle (surface heat flux ground heat flux upward long-wave radiation)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationValidation
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 321)
Polar WRF(Version 321)
The key modifications for Polar WRF are Optimal turbulence (boundary layer) parameterization Implementation of fractional sea ice as well as variable thickness of sea ice and snow cover on sea ice in the Noah LSM Improved treatment of heat transfer for ice sheets and revised surface energy balance calculation in the Noah LSM Model evaluations through Polar WRF simulations over Greenland the Arctic Ocean (SHEBA site) and Alaska have been performed Polar WRF is used by forecasters as part of the National Science Foundation sponsored Antarctic Mesoscale Prediction System Polar WRF is used by ASR
The key modifications for Polar WRF are Optimal turbulence (boundary layer) parameterization Implementation of fractional sea ice as well as variable thickness of sea ice and snow cover on sea ice in the Noah LSM Improved treatment of heat transfer for ice sheets and revised surface energy balance calculation in the Noah LSM Model evaluations through Polar WRF simulations over Greenland the Arctic Ocean (SHEBA site) and Alaska have been performed Polar WRF is used by forecasters as part of the National Science Foundation sponsored Antarctic Mesoscale Prediction System Polar WRF is used by ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR WRF-3DVar WRF Modeling System
BackgroundError
(gen_be)
Nested WRF3h Forecast
xb
xaUpdate Lateralamp Lower BCs(UPDATE_BC)
BackgroundPreprocessing(WPS real)
xlbc
Cycled Background
B0
yo R
xf
WRF-3DVar
Global FieldsERA-Interim
Seasonal dependent
PREPBUFRRadiance BUFROther spec data
3h frequency
HRLDAS output
Verification ampVisualization
WRF-3DVar Analysis performed over one domain in a 3-h interval
Atmospheric Data Assimilation
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Aqua (AMSU AIRS)
NOAA (HIRS AMSU)
Atmospheric Data Assimilation
Observational Data for ASR
Atmospheric Data Assimilation
Observational Data for ASR
PREPBUFR from Jack Woollen (including synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw gpspw)
Radiances also from JWdifferent sensors (amsua amsub mhs hirs3 hirs4) in separate BUFR files
GPSGPSRO GPSIPW
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
High-Resolution Land Data Assimilation
System (HRLDAS) for ASR1048708
Blending atmospheric and land-surface observations with the Noah land surface model Eg MODIS surface albedo snow cover and vegetation characteristics
To provide land state variables for driving the coupled Polar WRFNoah modeling system ndash Soil moisture (liquid and solid phase) ndash Soil temperature ndash Snow water equivalent and depth ndash Canopy water content ndash Vegetation characteristics
To provide long-term evolution of the above variables plus surface hydrological cycle (runoff evaporation) and energy cycle (surface heat flux ground heat flux upward long-wave radiation)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationValidation
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR WRF-3DVar WRF Modeling System
BackgroundError
(gen_be)
Nested WRF3h Forecast
xb
xaUpdate Lateralamp Lower BCs(UPDATE_BC)
BackgroundPreprocessing(WPS real)
xlbc
Cycled Background
B0
yo R
xf
WRF-3DVar
Global FieldsERA-Interim
Seasonal dependent
PREPBUFRRadiance BUFROther spec data
3h frequency
HRLDAS output
Verification ampVisualization
WRF-3DVar Analysis performed over one domain in a 3-h interval
Atmospheric Data Assimilation
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Aqua (AMSU AIRS)
NOAA (HIRS AMSU)
Atmospheric Data Assimilation
Observational Data for ASR
Atmospheric Data Assimilation
Observational Data for ASR
PREPBUFR from Jack Woollen (including synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw gpspw)
Radiances also from JWdifferent sensors (amsua amsub mhs hirs3 hirs4) in separate BUFR files
GPSGPSRO GPSIPW
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
High-Resolution Land Data Assimilation
System (HRLDAS) for ASR1048708
Blending atmospheric and land-surface observations with the Noah land surface model Eg MODIS surface albedo snow cover and vegetation characteristics
To provide land state variables for driving the coupled Polar WRFNoah modeling system ndash Soil moisture (liquid and solid phase) ndash Soil temperature ndash Snow water equivalent and depth ndash Canopy water content ndash Vegetation characteristics
To provide long-term evolution of the above variables plus surface hydrological cycle (runoff evaporation) and energy cycle (surface heat flux ground heat flux upward long-wave radiation)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationValidation
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Aqua (AMSU AIRS)
NOAA (HIRS AMSU)
Atmospheric Data Assimilation
Observational Data for ASR
Atmospheric Data Assimilation
Observational Data for ASR
PREPBUFR from Jack Woollen (including synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw gpspw)
Radiances also from JWdifferent sensors (amsua amsub mhs hirs3 hirs4) in separate BUFR files
GPSGPSRO GPSIPW
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
High-Resolution Land Data Assimilation
System (HRLDAS) for ASR1048708
Blending atmospheric and land-surface observations with the Noah land surface model Eg MODIS surface albedo snow cover and vegetation characteristics
To provide land state variables for driving the coupled Polar WRFNoah modeling system ndash Soil moisture (liquid and solid phase) ndash Soil temperature ndash Snow water equivalent and depth ndash Canopy water content ndash Vegetation characteristics
To provide long-term evolution of the above variables plus surface hydrological cycle (runoff evaporation) and energy cycle (surface heat flux ground heat flux upward long-wave radiation)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationValidation
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
High-Resolution Land Data Assimilation
System (HRLDAS) for ASR1048708
Blending atmospheric and land-surface observations with the Noah land surface model Eg MODIS surface albedo snow cover and vegetation characteristics
To provide land state variables for driving the coupled Polar WRFNoah modeling system ndash Soil moisture (liquid and solid phase) ndash Soil temperature ndash Snow water equivalent and depth ndash Canopy water content ndash Vegetation characteristics
To provide long-term evolution of the above variables plus surface hydrological cycle (runoff evaporation) and energy cycle (surface heat flux ground heat flux upward long-wave radiation)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationValidation
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationValidation
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationValidation
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
bull Polar WRFbull Satellite Radiancebull Microphysics and Cloud Fractionbull Diurnal Pressure over Mountain Regions
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation ResultPolar WRF corrected 2m-temperature warm bias over
Greenland
Polar WRF
AVN
AVN
Data assimilation 2m-temperature (oC) using Polar WRF and WRF and ERA-Interim 2m-temperature (oC) in October 2007
AVN
ERA-Interm
AVN
ERA
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation T2m cold bias over sea ice (200712)Validation T2m cold bias over sea ice (200712)
Polar WRFPolar WRF
WRFWRF
AVNAVN
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioTest Cases Radiance T2m
Test Cases Radiance T2m
NCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Validation RadianceValidation RadianceNCEP PREBUFER
NCEP PREBUFER + RAD
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ValidationMicrophysics and Cloud Fraction
ValidationMicrophysics and Cloud Fraction
WSM 6-class scheme Morrison 2-moment scheme
Cloud fraction one month cycling run (200808)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioValidation Surface Pressure Diurnal Cycle (200808)Validation Surface Pressure Diurnal Cycle (200808)
ERA-Interim (6h)ERA-Interim (6h)
ASR (3h)ASR (3h)
AVN (6h)AVN (6h)
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Two Year Cycling RunsTwo Year Cycling Runs Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
Period 2007-2008 Reduced Resolution 30km71L 10mb top Observations in 3-hour time window
ndash PREPBUFR (global obs errors)ndash satellite radiance data (AMSU-A AMSU-B
MHIS) ERA-Interim reanalysis for LBCs WRF-3DVarPolar WRF version 311 Full 3-hourly cycling run on OSC Glenn cluster
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Polar WRF(Version 32)
Numerical and Physics optionsNon hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
Non hydrostatic dynamics5th order horizontal advection (upwind-based)3rd order vertical advectionPositive-definite advection for moisture6th-order horizontal hyper diffusionFull horizontal diffusionGrid nudging to ERA-Interim 200 hPa and aboveUpper dampingMorrison double-moment scheme New Grell sub-grid scale cumulus scheme RRTMG atmospheric radiation scheme RRTMG shortwave schemeMYNN planetary boundary layer scheme MYNN surface layerNoah land surface modelFractional sea ice
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
PREPBUFRIncluding synop metar ship buoy qscat sound airep profiler pilot satob ssmi_retrieval_sea_surface_wind_speed ssmi_retrieval_pw
Radiancesamsua amsub mhs
Fractional Sea Ice
Observational Data for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Domain for ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
ASR Data Assimilation Result
Precipitation
ERA
Yearly Total 2008 Unit cm
ERA
ERA-Interim
ASR
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
Near Surface Variables Statistics
The data used for the surface statistics
NCEP FNL (or AVN)
ERA-Interim
Surface stations
(More than 12000 obtained from the National Climatic Data Center (NCDC) and Greenland Climate Network (GC-NET))
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result Near Surface Variables
Statistics Average statistics from comparing ASR for 2007 with observations
MonthWind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 132 276 075 024 288 091 157 289 091 034 114 099 02 119 261 075 022 278 091 174 297 090 031 110 099 03 102 250 075 -018 295 091 137 280 088 029 110 099 04 079 221 075 -037 279 093 098 248 088 026 097 099 05 054 207 072 -054 303 090 043 230 087 024 102 098 06 050 189 072 -048 296 091 024 208 085 022 097 098 07 049 184 071 -059 288 090 022 204 083 023 096 098 08 055 186 072 -058 275 091 025 191 086 024 094 098 09 077 206 074 -057 262 092 040 201 089 029 096 099 10 088 220 074 -040 259 092 060 206 091 032 099 099 11 116 258 074 -011 271 091 110 250 090 032 105 099 12 116 260 075 018 278 090 154 286 090 028 107 099
Average 086 227 074 -026 281 091 087 241 088 028 102 099 Average statistics from comparing AVN for 2007 with observations
Month Wind Speed 2m-Temperature 2m-Dew point Surface pressure
bias rmse corr bias rmse corr bias rmse corr bias rmse corr
01 028 230 072 -041 329 089 135 301 090 016 118 099 02 017 215 072 -077 331 087 132 308 088 015 117 099 03 -003 212 070 -136 359 087 119 308 085 015 119 099 04 -021 200 069 -151 360 088 078 298 083 017 107 099 05 -014 203 065 -119 348 088 012 266 084 012 105 098 06 -013 188 064 -109 338 087 -087 270 079 011 102 098 07 -003 185 063 -093 329 087 -121 278 076 013 100 098 08 008 186 063 -085 326 086 -110 264 080 014 101 098 09 022 200 066 -077 315 088 -041 246 085 012 102 099 10 031 201 068 -060 308 088 037 238 088 007 106 099 11 040 222 070 -021 315 089 118 296 088 010 110 099 12 043 224 072 -010 323 087 186 352 088 -001 121 099
Average 011 206 068 -082 332 088 038 285 085 012 109 099
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
2m Temperature Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (AVN) assimilation and observations in August 2008
ASRcorrelation -AVNcorrelation
ASRrmse -AVNrmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus OhioASR Data Assimilation Result
10m Wind Speed Statistic Differences
between ASR (ERA) assimilation and observations in August 2008
ASRcorrelation -ERAcorrelation ASRrmse -ERArmse
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
ASR Preliminary Meeting Boulder Colorado
Polar Meteorology Group Byrd Polar Research Center The Ohio State University Columbus Ohio
SummarySummaryA reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010
A reduced-resolution prototype assimilation for the Arctic for 2007-2008 has been completed Major progress has been made The test results look very encouraging and have being distributed to selected users (16 months)
However still quite some testing to do to optimize ASR especially the physics and land surface data assimilation
To engage the community in early ASR evaluation and use a 10-km 3-h assimilation is planned to be run for 4 months and a 30-km (3h) assimilation will be completed for 10 years (2000-2009) by end of 2010