The impact of natural and anthropogenic hydrocarbons on the tropospheric budget of carbon monoxide

被引:89
作者
Granier, C
Pétron, G
Müller, JF
Brasseur, G
机构
[1] Univ Paris 06, Serv Aeron, F-75005 Paris, France
[2] NOAA, Aeron Lab, Boulder, CO 80303 USA
[3] Univ Colorado, CIRES, Boulder, CO 80309 USA
[4] Natl Ctr Atmospher Res, Boulder, CO 80307 USA
[5] Belgian Inst Space Aeron, Brussels, Belgium
关键词
carbon monoxide; hydrocarbons; three-dimensional modeling;
D O I
10.1016/S1352-2310(00)00299-5
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A method to quantify the relative contributions of surface sources and photochemical production of atmospheric carbon monoxide has been implemented in a three-dimensional chemical-transport model. The impact of biogenic and anthropogenic hydrocarbons has been calculated. The oxidation of isoprene contributes to about 10% of the global tropospheric burden of carbon monoxide, with a maximum contribution over southern America and Africa. Oxidation of methane and terpenes contribute to 28 and 2%? respectively, of the tropospheric burden of CO. The oxidation of the other hydrocarbons, which include ethane, propane, ethylene, propylene and the surrogate hydrocarbon representing other hydrocarbons results in 12% of the CO tropospheric burden, among which 69% results from the oxidation of hydrocarbons of biologic origin. The overall global CO yield From the oxidation of isoprene is estimated to be 23% on a carbon basis. Comparisons between model results and the Few available observations of isoprene, terpenes and their oxidation products show that there is no evidence that the current global isoprene emissions proposed in the IGAC/GEIA emissions data base are substantially overestimated, as suggested by previous studies. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:5255 / 5270
页数:16
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