Biogenic versus anthropogenic sources of CO in the United States

被引：103

作者：

Hudman, R. C. ^{[1
]}

Murray, L. T. ^{[1
]}

Jacob, D. J. ^{[1
]}

Millet, D. B. ^{[5
]}

Turquety, S. ^{[7
]}

Wu, S. ^{[1
]}

Blake, D. R. ^{[2
]}

Goldstein, A. H. ^{[3
]}

Holloway, J. ^{[4
]}

Sachse, G. W. ^{[6
]}

机构：

[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02139 USA

[2] Univ Calif Irvine, Sch Phys Sci, Irvine, CA 92697 USA

[3] Univ Calif Berkeley, Div Ecosyst Sci, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA

[4] NOAA OAR, Earth Syst Res Lab, Boulder, CO USA

[5] Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55108 USA

[6] NASA, Langley Res Ctr, Div Atmospher Sci, Hampton, VA 23681 USA

[7] Univ Paris 06, IPSL, Serv Aeron, F-75252 Paris 05, France

来源：

GEOPHYSICAL RESEARCH LETTERS | 2008年 / 35卷 / 04期

关键词：

D O I：

10.1029/2007GL032393

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

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.

引用

页数：5

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