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Post-depositional enrichment of black soot in snow-pack and accelerated melting of Tibetan glaciers
Xu, BQ (Xu, Baiqing)[1]; Cao, JJ (Cao, Junji)[2]; Joswiak, DR (Joswiak, Daniel R.)[1]; Liu, XQ (Liu, Xianqin)[3]; Zhao, HB (Zhao, Huabiao)[1]; He, JQ (He, Jianqiao)[4]
2012-03-30
发表期刊ENVIRONMENTAL RESEARCH LETTERS
卷号7期号:1页码:14022
文章类型期刊论文
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Black Soot Enrichment Glacier Melting
DOI10.1088/1748-9326/7/1/014022
收录类别SCIE
语种英语
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被引频次:47[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10171
专题粉尘与环境研究室
通讯作者Xu, BQ (Xu, Baiqing)[1]
作者单位1.Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of TibetanPlateau Research, Chinese Academy of Sciences, Beijing 100085, People’s Republic of China;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment,Chinese Academy of Sciences, Xi’an 710075, People’s Republic of China;
3.Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,People’s Republic of China;
4.State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and EngineeringResearch Institute, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China
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Xu, BQ ,Cao, JJ ,Joswiak, DR ,et al. Post-depositional enrichment of black soot in snow-pack and accelerated melting of Tibetan glaciers[J]. ENVIRONMENTAL RESEARCH LETTERS,2012,7(1):14022.
APA Xu, BQ ,Cao, JJ ,Joswiak, DR ,Liu, XQ ,Zhao, HB ,&He, JQ .(2012).Post-depositional enrichment of black soot in snow-pack and accelerated melting of Tibetan glaciers.ENVIRONMENTAL RESEARCH LETTERS,7(1),14022.
MLA Xu, BQ ,et al."Post-depositional enrichment of black soot in snow-pack and accelerated melting of Tibetan glaciers".ENVIRONMENTAL RESEARCH LETTERS 7.1(2012):14022.
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