Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/20456
Title: Global modeling of organic aerosol: The importance of reactive nitrogen (NO and NO)
Authors: Pye, H. O. T.
Chan, A. W. H.
Seinfeld, J. H.
Barkley, Michael P.
First Published: 30-Nov-2010
Publisher: European Geosciences Union (EGU)
Citation: Atmospheric Chemistry and Physics, 2010, 10 (22), pp. 11261-11276
Abstract: Abstract. Reactive nitrogen compounds, specifically NO[subscript: x] and NO[subscript: 3], likely influence global organic aerosol levels. To assess these interactions, GEOS-Chem, a chemical transport model, is updated to include improved biogenic emissions (following MEGAN v2.1/2.04), a new organic aerosol tracer lumping scheme, aerosol from nitrate radical (NO[subscript: 3) oxidation of isoprene, and NO[subscript: x]-dependent monoterpene and sesquiterpene aerosol yields. As a result of significant nighttime terpene emissions, fast reaction of monoterpenes with the nitrate radical, and relatively high aerosol yields from NO[subscript: 3] oxidation, biogenic hydrocarbon-NO[subscript: 3] reactions are expected to be a major contributor to surface level aerosol concentrations in anthropogenically influenced areas such as the United States. By including aerosol from nitrate radical oxidation in GEOS-Chem, terpene (monoterpene + sesquiterpene) aerosol approximately doubles and isoprene aerosol is enhanced by 30 to 40% in the Southeast United States. In terms of the global budget of organic aerosol, however, aerosol from nitrate radical oxidation is somewhat minor (slightly more than 3 Tg/yr) due to the relatively high volatility of organic-NO[subscript: 3] oxidation products in the yield parameterization. Globally, 69 to 88 Tg/yr of organic aerosol is predicted to be produced annually, of which 14–15 Tg/yr is from oxidation of monoterpenes and sesquiterpenes and 8–9 Tg/yr from isoprene.
DOI Link: 10.5194/acp-10-11261-2010
ISSN: 1680-7316
eISSN: 1680-7324
Links: http://hdl.handle.net/2381/20456
http://www.atmos-chem-phys.net/10/11261/2010/acp-10-11261-2010.html
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © Author(s) 2010. This work is distributed under the Creative Commons Attribution 3.0 License ( http://creativecommons.org/licenses/by/3.0/ ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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