Biogenic versus anthropogenic sources of CO in the United States
Year: 2008
Type: article
Abstract: Aircraft observations of carbon monoxide (CO) from the ICARTT campaign over the eastern United States in summer 2004 (July 1–August 15), interpreted with a global 3‐D model of tropospheric chemistry (GEOS‐Chem), show that the national anthropogenic emission inventory from the U.S. Environmental Protection Agency (93 Tg CO y −1 ) is too high by 60% in summer. Our best estimate of the CO anthropogenic source for the ICARTT period is 6.4 Tg CO, including 4.6 Tg from direct emission and 1.8 Tg CO from oxidation of anthropogenic volatile organic compounds (VOCs). The biogenic CO source for the same period from the oxidation of isoprene and other biogenic VOCs is 8.3 Tg CO, and is independently constrained by ICARTT observations of formaldehyde (HCHO). Anthropogenic emissions of CO in the U.S. have decreased to the point that they are now lower than the biogenic source in summer.
Source: Geophysical Research Letters
DOI: 10.1029/2007gl032393
Authors: R. C. Hudman, L. T. Murray, D. J. Jacob, D. B. Millet, S. Turquety, S. Wu, D. R. Blake, A. H. Goldstein, J. Holloway, G. W. Sachse
Institutions: Harvard University, University of California, Irvine, University of California, Berkeley, Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, NOAA Earth System Research Laboratory, Langley Research Center, National Aeronautics and Space Administration
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Climate action
Open Access status: green
OpenAlex ID: W2170101199