气候变化领域集成服务门户(CCPortal): Post-depositional enrichment of black soot in snow-pack and accelerated melting of Tibetan glaciers

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DOI	10.1088/1748-9326/7/1/014022
	Post-depositional enrichment of black soot in snow-pack and accelerated melting of Tibetan glaciers
	Xu, Baiqing; Cao, Junji; Joswiak, Daniel R.; Liu, Xianqin; Zhao, Huabiao; He, Jianqiao
通讯作者	Xu, BQ (通讯作者)
发表日期	2012
ISSN	1748-9326
卷号	7 期号:1
英文摘要	The post-depositional enrichment of black soot in snow-pack was investigated by measuring the redistribution of black soot along monthly snow-pits on a Tien Shan glacier. The one-year experiment revealed that black soot was greatly enriched, defined as the ratio of concentration to original snow concentration, in the unmelted snow-pack by at least an order of magnitude. Greatest soot enrichment was observed in the surface snow and the lower firn-pack within the melt season percolation zone. Black carbon (BC) concentrations as high as 400 ng g(-1) in the summer surface snow indicate that soot can significantly contribute to glacier melt. BC concentrations reaching 3000 ng g(-1) in the bottom portion of the firn pit are especially concerning given the expected equilibrium-line altitude (ELA) rise associated with future climatic warming, which would expose the dirty underlying firn and ice. Since most of the accumulation area on Tibetan glaciers is within the percolation zone where snow densification is characterized by melting and refreezing, the enrichment of black soot in the snow-pack is of foremost importance. Results suggest the effect of black soot on glacier melting may currently be underestimated.
关键词	DIRTY SNOW CARBON CLIMATE RECORD ICE ALBEDO CHINA ASIA
英文关键词	black soot; enrichment; glacier melting
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000302580600033
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258010
推荐引用方式 GB/T 7714	Xu, Baiqing,Cao, Junji,Joswiak, Daniel R.,et al. Post-depositional enrichment of black soot in snow-pack and accelerated melting of Tibetan glaciers[J]. 中国科学院青藏高原研究所,2012,7(1).
APA	Xu, Baiqing,Cao, Junji,Joswiak, Daniel R.,Liu, Xianqin,Zhao, Huabiao,&He, Jianqiao.(2012).Post-depositional enrichment of black soot in snow-pack and accelerated melting of Tibetan glaciers.ENVIRONMENTAL RESEARCH LETTERS,7(1).
MLA	Xu, Baiqing,et al."Post-depositional enrichment of black soot in snow-pack and accelerated melting of Tibetan glaciers".ENVIRONMENTAL RESEARCH LETTERS 7.1(2012).