HR: 09:00h
AN: A21F-05    [Abstracts]
TI: A Comparison of WRF Chemistry Model Simulated NO2 Columns with SCIAMACHY Satellite Measurements in the Eastern United States
AU: * Kim, S
EM: SiWan.Kim@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, Mail Stop R/AL4, Boulder, CO 80305-3328 United States
AU: McKeen, S
A21F-05 AF: NOAA Aeronomy Laboratory, 325 Broadway, Mail Stop R/AL4, Boulder, CO 80305-3328 United States
AU: Hsie, E Y
A21F-05 AF: NOAA Aeronomy Laboratory, 325 Broadway, Mail Stop R/AL4, Boulder, CO 80305-3328 United States
AU: Frost, G
EM: gregory.j.frost@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway, Mail Stop R/AL4, Boulder, CO 80305-3328 United States
AU: Trainer, M
A21F-05 AF: NOAA Aeronomy Laboratory, 325 Broadway, Mail Stop R/AL4, Boulder, CO 80305-3328 United States
AU: Heckel, A
A21F-05 AF: Institute of Environmental Physics and Remote Sensing IUP/IFE, University of Bremen - FB1, Postfach 330440, Bremen, 28334 Germany
AU: Richter, A
A21F-05 AF: Institute of Environmental Physics and Remote Sensing IUP/IFE, University of Bremen - FB1, Postfach 330440, Bremen, 28334 Germany
AU: Burrows, J
A21F-05 AF: Institute of Environmental Physics and Remote Sensing IUP/IFE, University of Bremen - FB1, Postfach 330440, Bremen, 28334 Germany
AU: Peckham, S
A21F-05 AF: NOAA Forecast Systems Laboratory, 325 Broadway, Mail Stop R/FS1, Boulder, CO 80305-3328 United States
AU: Grell, G
A21F-05 AF: NOAA Forecast Systems Laboratory, 325 Broadway, Mail Stop R/FS1, Boulder, CO 80305-3328 United States
AB: Over the past decade, US electric power generation plants have increasingly employed NOx pollution controls during the summer ozone season (May - September). Ozone season NOx emissions measured at power plants in the Eastern United States have correspondingly decreased by 50 percent since 1999. To validate this emission trend and understand its effects, monthly mean NO2 column concentrations in the Eastern US simulated by the Weather Research and Forecasting Chemistry (WRF-Chem) model are compared with SCIAMACHY satellite measurements. The WRF-Chem simulations are performed before and during the 2004 ozone season using the NEI 1999, the latest final emission inventory from the EPA. Before the 2004 ozone season, the model results agree well with SCIAMACHY measurements, demonstrating that the NEI 1999 properly represents relatively uncontrolled power plant NOx emissions. 2004 ozone season model NO2 column concentrations are much higher than the SCIAMACHY data in regions with strong NOx-emitting power plants, such as the Ohio River valley, North Carolina, Georgia, and Alabama. The discrepancy demonstrates the inventory's overestimation of NOx emissions during the most recent ozone season.
DE: 0322 Constituent sources and sinks
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005