HR: 16:15h
AN: A34B-02 INVITED [Abstracts]
TI: Observations and Modeling of US Power Plant NOx Emission Reductions and Their Impact on Air Quality
AU: * Frost, G J
EM: Gregory.J.Frost@noaa.gov
AF: NOAA Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway,
R/CSD4, Boulder, CO 80305, United States
AU: * Frost, G J
EM: Gregory.J.Frost@noaa.gov
AF: University of Colorado, Cooperative Institute for Research in Environmental Sciences, CB216, Boulder, CO 80309, United States
AU: Kim, S
EM: SiWan.Kim@noaa.gov
AF: NOAA Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway,
R/CSD4, Boulder, CO 80305, United States
AU: Kim, S
EM: SiWan.Kim@noaa.gov
AF: University of Colorado, Cooperative Institute for Research in Environmental Sciences, CB216, Boulder, CO 80309, United States
AU: McKeen, S
EM: Stuart.A.McKeen@noaa.gov
AF: NOAA Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway,
R/CSD4, Boulder, CO 80305, United States
AU: McKeen, S
EM: Stuart.A.McKeen@noaa.gov
AF: University of Colorado, Cooperative Institute for Research in Environmental Sciences, CB216, Boulder, CO 80309, United States
AU: Hsie, E
EM: EirhYu.Hsie@noaa.gov
AF: NOAA Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway,
R/CSD4, Boulder, CO 80305, United States
AU: Hsie, E
EM: EirhYu.Hsie@noaa.gov
AF: University of Colorado, Cooperative Institute for Research in Environmental Sciences, CB216, Boulder, CO 80309, United States
AU: Trainer, M
EM: Michael.K.Trainer@noaa.gov
AF: NOAA Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway,
R/CSD4, Boulder, CO 80305, United States
AU: Heckel, A
EM: andreas.heckel@iup.physik.uni-bremen.de
AF: University of Bremen - FB1, Institute of Environmental Physics and Remote Sensing,
Postfach 330440, Bremen, 28334, Germany
AU: Richter, A
EM: Andreas.Richter@iup.physik.uni-bremen.de
AF: University of Bremen - FB1, Institute of Environmental Physics and Remote Sensing,
Postfach 330440, Bremen, 28334, Germany
AU: Burrows, J
EM: burrows@iup.physik.uni-bremen.de
AF: University of Bremen - FB1, Institute of Environmental Physics and Remote Sensing,
Postfach 330440, Bremen, 28334, Germany
AB:
Nitrogen oxide (NOx) emissions resulting from fossil fuel combustion lead to unhealthy levels of near-surface
ozone (O3). One of the largest US sources, electric power generation, represented about 25% of US
anthropogenic NOx emissions prior to the recent implementation of pollution controls by utility companies.
Continuous emission monitoring data demonstrate that overall US power plant NOx emissions decreased about
50% during the summer ozone season since the late 1990's. Space-based instruments observed declining
regional NOx levels between 1999 and 2005 in response to these emission reductions. Satellite-retrieved
summertime nitrogen dioxide (NO2) columns and bottom-up emission estimates show larger decreases in the
Ohio River Valley, where power plants dominate NOx emissions, than in the northeast US urban corridor. Model
simulations predict lower O3 across much of the eastern US in response to these emission reductions.
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting