HR: 0800h
AN: A11B-0876 [Abstracts]
TI: Analysis of Power Plant NOx Emission Changes and Their Impact on Ozone in the Eastern 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: Kim, S
A11B-0876
AF: NOAA Aeronomy Laboratory, 325 Broadway, Mail Stop R/AL4, Boulder, CO 80305-3328
United States
AU: McKeen, S
A11B-0876
AF: NOAA Aeronomy Laboratory, 325 Broadway, Mail Stop R/AL4, Boulder, CO 80305-3328
United States
AU: Hsie, E Y
A11B-0876
AF: NOAA Aeronomy Laboratory, 325 Broadway, Mail Stop R/AL4, Boulder, CO 80305-3328
United States
AU: Trainer, M
A11B-0876
AF: NOAA Aeronomy Laboratory, 325 Broadway, Mail Stop R/AL4, Boulder, CO 80305-3328
United States
AU: Peckham, S
A11B-0876
AF: NOAA Forecast Systems Laboratory, 325 Broadway, Mail Stop R/FS1, Boulder, CO 80305-3328
United States
AU: Grell, G
A11B-0876
AF: NOAA Forecast Systems Laboratory, 325 Broadway, Mail Stop R/FS1, Boulder, CO 80305-3328
United States
AB:
Changes in NOx emissions from electric power generation plants due to the implementation of pollution controls are measured
by Continuous Emission Monitoring Systems (CEMS) and compiled by the EPA. Eastern US power plant NOx emissions decreased
between 1999 and 2004 by about 50 percent during the summer ozone season (May - September). CEMS data for the 1999 - 2004
period are analyzed to understand the extent of these emission changes and their temporal and spatial variability. CEMS data
are used to construct a nationwide 2004 update to the power plant portion of the EPA's NEI 1999, the most recent final
emission inventory available for air quality models. O3 concentrations during the 2004 ozone season are simulated by the
Weather Research and Forecasting Chemistry (WRF-Chem) model, with a base emission scenario using the NEI 1999 and a
perturbation scenario using the updated 2004 inventory. The impact of these NOx emission trends on O3 in the Eastern US is
described.
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