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Wintertime Overnight NOx Removal in a Southeastern United States Coal-Fired Power Plant Plume: A Model for Understanding Winter NOx Processing and Its ImplicationsNitric oxide (NO) is emitted in large quantities from coal-burning power plants. During the day, the plumes from these sources are efficiently mixed into the boundary layer, while at night, they may remain concentrated due to limited vertical mixing during which they undergo horizontal fanning. At night, the degree to which NO is converted to HNO3 and therefore unable to participate in next-day ozone (O3) formation depends on the mixing rate of the plume, the composition of power plant emissions, and the composition of the background atmosphere. In this study, we use observed plume intercepts from the Wintertime INvestigation of Transport, Emissions and Reactivity (WINTER) campaign to test sensitivity of overnight NOx removal to the N2O5 loss rate constant, plume mixing rate, background O3, and background levels of volatile organic compounds using a 2-D box model of power plant plume transport and chemistry. The factor that exerted the greatest control over NOx removal was the loss rate constant of N2O5. At the lowest observed N2O5 loss rate constant, no other combination of conditions converts more than 10 percent of the initial NOx to HNO3. The other factors did not influence NOx removal to the same degree.
Document ID
20180002898
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Fibiger, Dorothy L. (National Oceanic and Atmospheric Administration Boulder, CO, United States)
McDuffie, Erin E. (National Oceanic and Atmospheric Administration Boulder, CO, United States)
Dube, William P. (National Oceanic and Atmospheric Administration Boulder, CO, United States)
Aikin, Kenneth C. (National Oceanic and Atmospheric Administration Boulder, CO, United States)
Lopez-Hilifiker, Felipe D. (Washington Univ. Seattle, WA, United States)
Lee, Ben H. (Washington Univ. Seattle, WA, United States)
Green, Jaime R. (North Carolina Agricultural and Technical State Univ. Greensboro, NC, United States)
Fiddler, Marc N. (North Carolina Agricultural and Technical State Univ. Greensboro, NC, United States)
Holloway, John S. (National Oceanic and Atmospheric Administration Boulder, CO, United States)
Ebben, Carlena (California Univ. Berkeley, CA, United States)
Sparks, Tamara L. (California Univ. Berkeley, CA, United States)
Wooldridge, Paul (California Univ. Berkeley, CA, United States)
Weinheimer, Andrew J. (National Center for Atmospheric Research Boulder, CO, United States)
Montzka, Denise D. (National Center for Atmospheric Research Boulder, CO, United States)
Apel, Eric C. (National Center for Atmospheric Research Boulder, CO, United States)
Hornbrook, Rebecca S. (National Center for Atmospheric Research Boulder, CO, United States)
Hills, Alan J. (National Center for Atmospheric Research Boulder, CO, United States)
Blake, Nicola J. (California Univ. Irvine, CA, United States)
DiGangi, Josh P. (NASA Langley Research Center Hampton, VA, United States)
Wolfe, Glenn M. (Maryland Univ. Baltimore County Catonsville, MD, United States)
Bililign, Solomon (North Carolina Agricultural and Technical State Univ. Greensboro, NC, United States)
Cohen, Ronald C. (California Univ. Berkeley, CA, United States)
Thornton, Joel A. (Washington Univ. Seattle, WA, United States)
Brown, Steven S. (National Oceanic and Atmospheric Administration Boulder, CO, United States)
Date Acquired
May 16, 2018
Publication Date
January 23, 2018
Publication Information
Publication: Journal of Geophysical Research Atmospheres
Volume: 123
Issue: 2
ISSN: 2169-897X
Subject Category
Environment Pollution
Report/Patent Number
GSFC-E-DAA-TN55269
Funding Number(s)
CONTRACT_GRANT: NNX15AT34A
CONTRACT_GRANT: AFRC DC-8
Distribution Limits
Public
Copyright
Other
Keywords
air quality
power plants
NOx
WINTER
ISAF