Satellite-observed U.S. power plant NOx emission reductions and their impact on air quality

Nitrogen oxide (NOx) emissions resulting from fossil fuel combustion lead to unhealthy levels of near‐surface ozone (O3). One of the largest U.S. sources, electric power generation, represented about 25% of the U.S. anthropogenic NOx emissions in 1999. Here we show that space‐based instruments obser...

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Published in:Geophysical research letters 2006-11, Vol.33 (22), p.n/a
Main Authors: Kim, S.-W., Heckel, A., McKeen, S. A., Frost, G. J., Hsie, E.-Y., Trainer, M. K., Richter, A., Burrows, J. P., Peckham, S. E., Grell, G. A.
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Language:English
Subjects:
Earth sciences
Earth, ocean, space
Exact sciences and technology
NOx emission
power plant
satellite
SCIAMACHY
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container_issue 22
container_start_page
container_title Geophysical research letters
container_volume 33
creator Kim, S.-W.
Heckel, A.
McKeen, S. A.
Frost, G. J.
Hsie, E.-Y.
Trainer, M. K.
Richter, A.
Burrows, J. P.
Peckham, S. E.
Grell, G. A.
description Nitrogen oxide (NOx) emissions resulting from fossil fuel combustion lead to unhealthy levels of near‐surface ozone (O3). One of the largest U.S. sources, electric power generation, represented about 25% of the U.S. anthropogenic NOx emissions in 1999. Here we show that space‐based instruments observed declining regional NOx levels between 1999 and 2005 in response to the recent implementation of pollution controls by utility companies in the eastern U.S. 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 U.S. urban corridor. Model simulations predict lower O3 across much of the eastern U.S. in response to these emission reductions.
doi_str_mv 10.1029/2006GL027749
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subjects Earth sciences
Earth, ocean, space
Exact sciences and technology
NOx emission
power plant
satellite
SCIAMACHY
title Satellite-observed U.S. power plant NOx emission reductions and their impact on air quality
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