Source Attribution of Black Carbon in Arctic Snow

被引：109

作者：

Hegg, Dean A. ^{[1
]}

Warren, Stephen G. ^{[1
]}

Grenfell, Thomas C. ^{[1
]}

Doherty, Sarah J. ^{[2
]}

Larson, Timothy V. ^{[3
]}

Clarke, Antony D. ^{[4
]}

机构：

[1] Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA

[2] Univ Washington, JISAO, Seattle, WA 98195 USA

[3] Univ Washington, Dept Civil & Environm Engn, Seattle, WA 98195 USA

[4] Univ Hawaii, Sch Ocean & Earth Sci & Technol, Honolulu, HI 96822 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2009年 / 43卷 / 11期

关键词：

POSITIVE MATRIX FACTORIZATION; ATMOSPHERIC AEROSOL; SEASONAL-VARIATIONS; ICE-SHEET; GREENLAND; BIOMASS; ORIGIN; PM2.5; SOOT; AIR;

D O I：

10.1021/es803623f

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Snow samples obtained at 36 sites in Alaska, Canada, Greenland, Russia, and the Arctic Ocean in early 2007 were analyzed for light-absorbing aerosol concentration together with a suite of associated chemical species. The light absorption data, interpreted as black carbon concentrations, and other chemical data were input into the EPA PMF 1.1 receptor model to explore the sources for black carbon in the snow. The analysis found four factors or sources: two distinct biomass burning sources, a pollution source, and a marine source. The first three of these were responsible for essentially all of the black carbon, with the two biomass sources (encompassing both open and closed combustion) together accounting for >90% of the black carbon.

引用

页码：4016 / 4021

页数：6

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