b. demoz, d. venable, t. bacha: howard university b. gentry: nasa/gsfc
DESCRIPTION
The Howard University Beltsville Research Campus Highlights from the Recent Wind Lidar and Water Vapor Experiments : February - March 2009. B. Demoz, D. Venable, T. Bacha: Howard University B. Gentry: NASA/GSFC H. Chen, K. Vermeesch: SSAI, MD G. Koch, U. Singh: NASA/LaRC - PowerPoint PPT PresentationTRANSCRIPT
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The Howard University Beltsville Research CampusThe Howard University Beltsville Research Campus Highlights from the Recent Wind Lidar and Water Vapor Highlights from the Recent Wind Lidar and Water Vapor
ExperimentsExperiments : February - March 2009February - March 2009
B. Demoz, D. Venable, T. Bacha: Howard University
B. Gentry: NASA/GSFC
H. Chen, K. Vermeesch: SSAI, MD
G. Koch, U. Singh: NASA/LaRC
M. Boquet, L. Sauvage LEOSPHERE, France
Acknowledgment: Dr. E. Joseph at Howard UniversityDrs. D. Whiteman, T. McGee at NASA/GSFC
Funding: NASA/ROSES’07 (Dr. Ramesh Kakar)
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OutlineOutline• HU-Beltsville Research Campus (HUBRC):
– Broad goals – Location and Instrumentation
• Recent Experiments:– FYI: Water Vapor and Temperature (WAVES/N-WAVES) – Howard University Wind Lidar Experiment
• Goals
• Highlights of comparisons
• Historical Wind Data at IAD
• Summary: Things yet to be done
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Broad Goals of Beltsville Field Broad Goals of Beltsville Field SiteSite
• Enhance capacityEnhance capacity of HU to conduct research of HU to conduct research
• Facility for Facility for hands-on student traininghands-on student training
• Contribute to national and international climate and Contribute to national and international climate and environmental monitoring activitiesenvironmental monitoring activities
–PBL (observation, parameterization, forecast)
–Climate observations and satellite validation (GRUAN, AIRS/TES, NDACC)
–Pollution studies (MDE)
–Lidar (Wind, Aerosol, Water Vapor/Raman)
–Radiosonde sensor evaluation (NWS)
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Majo
r Poll
ution
Tra
nspo
rt co
rrido
r
DullesAirportSterling(NWS)
NationalAirport
BWIAirport
HUB
GSFC
UMBC
Wallops
P
SU
UMD
U
VA
MDE
• Semi-urban site (not “pristine”)• Major Pollution corridor• Integrate Science and Education• Extensive instrumentation• Great place for collaboration • Diverse weather conditions
Location
NOAA
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Latitude: +39º 03’ 15.117’’Longitude: -76º 52’ 39.448’’Elevation: 53.2 mArea = 110 acres
Rad. (~BSRN)
GPS (X2)CeilometerMWR (2)MWR(39)All Sky
Office/Shops/Labs
C-Band RadarMDE Profiler
Full Air Quality
Lidar Laboratory
HURLALVISATGLOWCeilometer
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Me
t T
ow
er
8-levels T/RHFlux, Net radSoil MoistureChemistry
PDBRSOSCORS
Aerial View: HUBRC
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NDACC-WAVES_2009
* Technology and calibration development for UT/LS water vapor profiling using Raman Lidar
* Starting of climatology of UT/LS water vapor using lidar + sonde at BV for climate change studies
Instruments:
* HURL: Howard Univ. Raman Lidar (q)* ALVICE: GSFC Raman Lidar (Whiteman; q, T)* AT: GSFC Raman Lidar (McGee; q, T)* STROZE-LITE (McGee; Ozone)
Funding: NASA/ROSES07 Atmospheric Composition (K. Jucks)
N-WAVES Experimenthttp://tropometrics.com
0 20 40 600
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10
15
Wind speed (m/s)A
ltit
ud
e (k
m)
0 100 200 3000
5
10
15
Wind direction (deg)
Alt
itu
de
(km
)
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NASA
GSFC
GLOW
915MHz Profiler
Howard University Wind Lidar ExperimentHoward University Wind Lidar Experiment
LEOSPHERE WLS70
ACARS
GOALS
• Lidar wind in various aerosol loading (pollution, cirrus, etc)
• Develop seasonal data archive for lidar wind
• Demonstrate the VALIDAR - GLOW wind concept
• Compare lidar wind to other sensors (Profiler, sonde, AMDAR, etc).
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NASA
GSFC
GLOWGoddardLidar Observatory Winds
LaRCVALidationLIDAR
915MHz Radar Profiler
Howard University Wind Lidar ExperimentHoward University Wind Lidar Experiment
LEOSPHERE WLS70
ACARS
Wind Experiment Period N-WAVES Experiment Period
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Commercial aircraft observations - winds and temperature - water vapor, turbulence (recently)
Positive impact of AMDAR on weather forecast.• 3-hr wind forecast error reduced by 40% (overall improvement of 11%) • 12-hr wind forecasts of winds improved by 5%
http://www.wmo.int/amdar/Publications/Final%20Production%20AMDAR%20Flyer.pdf
915MHz Radar ProfilerSubstantial Variability between AMDAR, Sonde and Profiler in Speed in Direction below 6km.
ACARS_Profiler_sondeAircraft Meteorological DAta Relay (AMDAR)
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• These seem to be “atmospheric” variations.
ACARS-GLOW: Example
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LEOSPHERE WLS70LEOSPHERE WLS70www.leosphere.comwww.leosphere.com
LEOSPHERE WLS70
Output:
• Laser power: 20 microjoules •Vr, CNR (line of sight, ~1Hz)• U, V, W, Vh, Direction (~1Hz)• Vhm, Dirm, Um, Vm, Wm, every 10 min
Horizontal Wind speed
Wind direction
Vertical Wind speed
UTC +1
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VALIDAR-WLS70
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= sonde altitude at time of lidar measurement. Assumes rise rate of 5 m/s.
270 280 290 300 310 320 330 3400
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2
3
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Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_30_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
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Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:32 UT
270 280 290 300 310 320 330 3400
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2
3
4
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Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_30_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
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5
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Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:32 UT
GLOW-Sonde
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GLOW-VALIDARExample: 24 Feb. 2009
• Good correlation in the overlap region• Good correlation with Sonde
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Historical Wind Data AnalysisSingle station (IAD) – Balloon
Summary Jet altitude varies by ~ 2.5km
~ 250 m res (10%)
~ 25m/s variation in 1-yr2.5 m/s res (10%), monthly average.
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Summary/Conclusion – To do list
• Completed of 1st GLOW/VALIDAR Experiment
– Continue GLOW/VALIDAR/other analysis
– Start lidar wind versus optical depth work
– Plan for a 2nd GLOW/VALIDAR deployment ($$?)
• PBL: WRF/Lidar/Profiler/Sonde work in progress
– Complete LEOSPHERE WLS70 performance study
– Check Sonde-to-sonde wind variability
– Lidar winds during Cold fronts/LL-Jets
• Collaborate with Regional OSSE work (Z. Pu et al.)
• Lidar humidity/temperature/wind offers a 1st look at
UTLS structure
June 10, 2009 18
END
THANK YOU
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• ACARS (Aircraft Communications, Addressing, and Reporting System) is the name of a data link service provided by Aeronautical Radio, Inc. that sends data between aircraft and ground stations
• MDCRS (Meteorological Data, Collection and Reporting System) is the weather portion of the ACARS data stream provided by seven major U.S. air carriers
• TAMDAR (Tropospheric Airborne Meteorological DAta Reporting) data are provided by a private company, AirDat, who uses regional air carriers
• Aircraft Meteorological DAta Relay (AMDAR) is the preferred term by the WMO and NWS.