preliminary photochemical air-quality simulations in ......5/17/2011 calnex data analysis workshop 8...
TRANSCRIPT
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5/17/2011 CalNex Data Analysis Workshop 1
Preliminary Photochemical Air-Quality
Simulations in California during CalNex
Chenxia Cai and Ajith Kaduwela
Planning and Technical Support Division
Air Resources Board
California Environmental Protection Agency
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Acknowledgements
Rainer Volkamer, Hilke Oetjen, Sunil Baidar (Univ. of
Colorado)
Thomas Ryerson, Ilana Pollack, John Holloway
(NOAA)
Barry Lefer (Univ. of Houston)
Dazhong Yin, Kemal Gurer, Bruce Jackson, Jeremy
Avise (CARB)
Louisa Emmons (NCAR)
James Kelly (EPA)
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5/17/2011 CalNex Data Analysis Workshop 3
Model Application
CMAQ4.7 with SAPRC99
4 km × 4 km horizontal resolution; 30 vertical layers from surface to ~100mb with the lowest layer nominally 30-m deep ; 315×285×30 total grid points.
MM5 Meteorological fields
“2008 June” weekday/weekend emissions
Boundary conditions from MOZART-4
State-wide Modeling Domain
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5/17/2011 CalNex Data Analysis Workshop 4
NO2 Vertical Column Below Aircraft [Unit: 1x1015 molec cm-2]
Twin Otter
07/16/2010
Wednesday
Morning flight
Simulation
Observation
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5/17/2011 CalNex Data Analysis Workshop 5
CalTech Surface Site (LA Supersite)
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5/17/2011 CalNex Data Analysis Workshop 6
Lancaster Surface Site
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5/17/2011 CalNex Data Analysis Workshop 7
P3 Flight on 05/16/2010 (Sunday)
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5/17/2011 CalNex Data Analysis Workshop 8
P3 Flight on 05/16/2010 Ctln Rubi CIT CIT CIT Rubi
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5/17/2011 CalNex Data Analysis Workshop 9
Vertical Comparison on 05/16/2010
(Data are grouped to each model layer, solid dot: mean, error bar: ±1σ)
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5/17/2011 CalNex Data Analysis Workshop 10
NO2 Vertical Column Below Aircraft [Unit: 1x1015 molec cm-2]
Twin Otter 06/29/2010 (Tuesday) Flight
Observation Simulation
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5/17/2011 CalNex Data Analysis Workshop 11
Bakersfield Surface Site
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5/17/2011 CalNex Data Analysis Workshop 12
Shafter Surface Site
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5/17/2011 CalNex Data Analysis Workshop 13
Fresno Surface Site
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NO2 Vertical Column Below Aircraft [Unit: 1x1015 molec cm-2]
5/17/2011 CalNex Data Analysis Workshop 14
06/21/2010
Monday
Flight ~2km
06/28/2010
Monday
Flight ~2km
Obs Sim
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5/17/2011 CalNex Data Analysis Workshop 15
Sacramento Surface Site
06/21 06/28
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5/17/2011 CalNex Data Analysis Workshop 16
NO2 Vertical Column Below Aircraft [Unit: 1x1015 molec cm-2]
Twin Otter 06/26/2010 Saturday (Flight ~4-5.5km)
Observation Simulation
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5/17/2011 CalNex Data Analysis Workshop 17
Livermore Surface Site
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5/17/2011 CalNex Data Analysis Workshop 18
CalNex P3 06/14/2010 (Monday)
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5/17/2011 CalNex Data Analysis Workshop 19
CalNex P3 Flight on 06/14/2011 CIT Sac SanP Liv Bak Arv CIT
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5/17/2011 CalNex Data Analysis Workshop 20
Vertical Comparison on 06/14/2011 (Data are grouped to each model layer, solid dot: mean, error bar: ±1σ)
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Future Work
“True 2010” emissions inventories with
appropriate adjustments for recession
Compare with additional measurements
Collaborations with CalNex experimentalists
Routine surface/space based measurements
Model performance evaluation (Met/AQ)
Model inter-comparison (Met/AQ)
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Further Questions and Comments?
Chenxia Cai – [email protected]
Ajith Kaduwela – [email protected]
5/17/2011 CalNex Data Analysis Workshop 22