chemical forecast from nasa, u.iowa & ncar 2012-08-23
DESCRIPTION
Chemical forecast from NASA, U.Iowa & NCAR 2012-08-23. Arlindo DaSilva , NASA Goddard Pablo Saide , Greg Carmichael, U. Iowa Louisa Emmons, Mary Barth, Mijeong Park, NCAR. UIOWA model summary. - PowerPoint PPT PresentationTRANSCRIPT
Chemical forecastfrom NASA, U.Iowa & NCAR
2012-08-23
Arlindo DaSilva, NASA GoddardPablo Saide, Greg Carmichael, U. Iowa
Louisa Emmons, Mary Barth, Mijeong Park, NCAR
UIOWA model summary• WRFv3.3.1, 12km horizontal resolution, 35 vertical levels
up to 50hPa, MYJ PBL, run continuously, FNL meteo, 2 runs:– Full chemistry: Lin MP, KF cumulus, CBMZ-MOSAIC 4 bin with
aerosol direct effect, no biomass burning, MACC (assimilated, ECMWF) chemical boundary conditions• Output: Full chemistry (O3, CO, NOx, VOC, etc.), Aerosol mass (oc,
bc, so4, nh4, no3, oin, na, cl, water) and number resolved by size
– Tracer (no chemistry , no decay, no deposition), Morrison MP, Grell Cumulus• Tracers: Biomass burning (NCAR + Plume rise), Thailand, China
region, India region, East Thailand region (Vietnam), West Thailand region (Nepal), South Thailand region (Indonesia), shipping, degassing volcanoes, dust, sea salt, MEGAN biogenics
• Emissions: INTEX-B 2006 0.5°x0.5° resolution, IIASA 2005 1x1° shipping, vertical and diurnal variation for Area, Industry and Power.
• Plots: Pressure levels: 925, 850, 500, 200, 150, 100. Five cross sections
Topography, Cross-sections and model domain
NCAR models: MOZART-4 and WRF-TracerMOZART-4, driven by GEOS-5 meteorology (global)1) Full Chemistry: 1.9°x2.5° horiz resolution2) Tracers only: 0.5°x0.6° horiz resolution
– Tracers with 25-day lifetime based on anthropogenic CO emissions (global and by region) and biomass burning– Soluble tracer with 25-day lifetime, global anthro CO emissions– 5-day tracer, global anthro CO emissions– Biogenic tracer, MEGAN isoprene emissions, 5-day lifetime– Lightning NO tracer, 5-day lifetime– Stratospheric ozone tracer
•Emissions: Anthro: Streets-ARCTAS; Fires: FINN (Wiedinmyer)
WRF with Tracers: 2 Domains: 20 & 4 km hor.resol.; top: 10 hPaPhysics:
– Two moment cloud physics (modified Thompson et al., 2004)– Tiedtke scheme / No convective parameterization– Mellor-Yamada-Janjic PBL parameterization– NOAH land surface model– Rapid Radiative Transfer Model for long wave radiation– Goddard scheme for short wave radiation
Tracers:– 1 tracer from the boundary layer everywhere in domain– 2 tracers from the boundary layer for the Straits of Malacca region
(passive and 1-day lifetime tracers)– 2 tracers from the mid-Troposphere region – 2 tracers from the Stratosphere region– 1 tracer from the production of lightning-NOx
Other NCAR productsFINN – Fire Inventory from NCAR (C. Wiedinmyer)
Run in real-time using MODIS Rapid Response fire counts (FIRMS from UMd)Fire emissions for each fire, and gridded to 0.5 degEmissions for CO2, CO, NO, BC, OC, etc., and speciated VOCs (MOZART, SAPRC, GEOS-chem mechanisms)
MOPITT CO Processed daily at NCAR, available within 8 hours of overpassJoint Thermal/Near IR retrievals of CO profilesGlobal coverage in 3 days
IASI COProcessed daily at NCARThermal IR retrievalsFull global coverage twice a day
India region contribution
China region contribution
• Good opportunities over Nepal• Big contributions from India
and China regions
Total CO full chemistry 150mb
1. Anticyclone Transport
1. Anticyclone Transport
E.Asia Anthro
• Good opportunities over Nepal• Big contributions from India
and China regions
India Anthro (white line indicates source region)
Lightning NO
India contribution 850 hPa
• Iowa WRF has some transport from India over BoB, but MZ4/GEOS5 does not• Pollution over Nepal mainly from India,
very mixed due to anticyclone
Total CO full chemistry 850 hPa
2. Pollution over Northern Bay of Bengal, Nepal
Anthro CO
Indonesia region 150mb
• Isolated convection over BoB and east of Singapore• Cumulus outflow from India, south Thailand, and
Biomass burning
Vertical velocity Biomass Burning 150mb
India region contribution 150mb
3. Outflow from cumulus, cloud processing
3. Outflow from cumulus, cloud processing
Anthro, 25-day soluble tracer
• Low values of soluble tracer indicate extensive cloud processing of air at 200 hPa
Anthro, 25-day tracer
Lightning NO
NCAR WRF-Tracer shows strongest convection over S. Gulf of Thailand
3. Outflow from cumulus, cloud processing
Reflectivity (dBZ)
Dust tracer
Biomass burning tracer
Biogenics tracer
• All at 850 mb
CO full chemistry (non BB)
4. Tropospheric chemistry source characterization
Volcano tracer
4. Tropospheric chemistry source characterization
Fire tracer
• Anthro• Fires• Biogenics
Anthro tracer
Isoprene emissions tracer
• Cross section west to east through Singapore (103.75E)
• Sources other than shipping dominate pollution
• Low clouds present
5. Ship track study
Shipping Tracer Volcano Tracer
Indonesia region Tracer Biomass Burning Tracer
6. TTL Cirrus heating rates
• Cirrus over clear water on East BoB, east Philippines, around Java
LWP
IWPCloud Incidence
Biomass Burning 150mb
• Extensive cirrus coverage (model cloud fraction at 150mb)
• High number of AerosolAerosol Number full chem
Cloud Incidence
7. Cirrus microphysics
CO BB 150 mb CO BB 850 mb
• Avoid convection close to Singapore
8. Smoke radiative heating rates13. Biomass burning
BB across Singapore
8. Smoke radiative heating rates13. Biomass burning
CO Biomass Burning 150 mb CO Biomass Burning 850 mb
• Some burning on Borneo
• Tropopause height ~ 17km over Utapao (~100mb)
• Big China Contribution
10. Mixing into TTL
Water vapor 100mb Tracer run Water vapor 100mb FullChem run
China region 100mb
Strat intrusion near convected pollution?
• Aerosols and clouds
LWP+IWP, LWP contours
TOTAL AOD with contours at 500mb
11. ACE satellite retrievals12. Aerosol retrievals through clouds 14. CALIPSO and CloudSat retrievals
AOD with cloud contours Across Utapao