Sources of Carbon Monoxide and Formaldehyde in North America Determined from High-Resolution Atmospheric Data

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Sources of Carbon Monoxide and Formaldehyde in North America Determined from High-Resolution Atmospheric Data

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Title: Sources of Carbon Monoxide and Formaldehyde in North America Determined from High-Resolution Atmospheric Data
Author: Wofsy, Steven; Longo, Marcos; Chow, Victoria; Miller, Scot M.; Dias, Pedro Leite da Silva; Lin, John C.; Gerbig, Christoph; Millet, Dylan B.; Hirsch, Adam I.; Andrews, Arlyn E.; Matross, Daniel M.; Hudman, Rynda C.; Daube, Bruce C.; Gottlieb, Ellaine W.

Note: Order does not necessarily reflect citation order of authors.

Citation: Miller, Scot M., Daniel M. Matross, Arlyn E. Andrews, Dylan B. Millet, Marcos Longo, Ellaine W. Gottlieb, Adam I. Hirsch, Christoph Gerbig, John C. Lin, Bruce C. Daube, Rynda C. Hudman, Pedro Leite da Silva Dias, Victoria Ye Chow, and Steven C. Wofsy. 2008. Sources of carbon monoxide and formaldehyde in North America determined from high-resolution atmospheric data. Atmospheric Chemistry and Physics 8(24): 7673-7696
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Abstract: We analyze the North American budget for carbon monoxide using data for CO and formaldehyde concentrations from tall towers and aircraft in a model-data assimilation framework. The Stochastic Time-Inverted Lagrangian Transport model for CO (STILT-CO) determines local to regional-scale CO contributions associated with production from fossil fuel combustion, biomass burning, and oxidation of volatile organic compounds (VOCs) using an ensemble of Lagrangian particles driven by high resolution assimilated meteorology. In many cases, the model demonstrates high fidelity simulations of hourly surface data from tall towers and point measurements from aircraft, with somewhat less satisfactory performance in coastal regions and when CO from large biomass fires in Alaska and the Yukon Territory influence the continental US.

Inversions of STILT-CO simulations for CO and formaldehyde show that current inventories of CO emissions from fossil fuel combustion are significantly too high, by almost a factor of three in summer and a factor two in early spring, consistent with recent analyses of data from the INTEX-A aircraft program. Formaldehyde data help to show that sources of CO from oxidation of CH4 and other VOCs represent the dominant sources of CO over North America in summer.
Published Version: http://www.atmos-chem-phys.net/8/7673/2008/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:3122465
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