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DOI10.1016/j.atmosenv.2016.12.021
Levoglucosan on Tibetan glaciers under different atmospheric circulations
You, Chao; Yao, Tandong; Xu, Chao; Song, Lili
发表日期2017
ISSN1352-2310
卷号152页码:1-5
英文摘要

Tibetan glaciers are natural documents of the specific biomass burning biomarker levoglucosan from regions around. However, knowledge about the characteristics of levoglucosan distributions on Tibetan glaciers under the different climate systems is poorly understood. In this study, we detected levoglucosan in snow samples from the Zuoqiupu (ZQP) Glacier affected by the Indian summer monsoon and the Muji (MJ) Glacier dominated by the westerlies. Results found that the ZQP Glacier was more heavily affected by fire emissions than the MJ Glacier, caused by stronger emission sources on the windward direction and shorter transport distances. Elevations for the appearance of levoglucosan maxima on glacier surfaces are roughly around the equilibrium line altitudes. However, levoglucosan displays a wider distribution range on the MJ glacier than on the ZQP glacier due to weaker summer melt. Injection height of fire smokes and glacial melt can affect the altitudinal distribution of levoglucosan. Black carbon and levoglucosan show different temporal variations in snow-pit samples on those two glaciers. The post depositional effects, e.g. the melting and refreezing processes, can modulate the vertical distribution of levoglucosan in snow/ice layers. Our results are helpful for understanding the geochemical behaviors of levoglucosan happened on Tibetan glacier surfaces. (C) 2016 Elsevier Ltd. All rights reserved.


英文关键词Fire emissions;Levoglucosan;Fire tracer;Snow chemistry;Tibetan plateau
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:000394400000001
来源期刊ATMOSPHERIC ENVIRONMENT
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/355
推荐引用方式
GB/T 7714
You, Chao,Yao, Tandong,Xu, Chao,et al. Levoglucosan on Tibetan glaciers under different atmospheric circulations[J]. 中国科学院青藏高原研究所,2017,152:1-5.
APA You, Chao,Yao, Tandong,Xu, Chao,&Song, Lili.(2017).Levoglucosan on Tibetan glaciers under different atmospheric circulations.ATMOSPHERIC ENVIRONMENT,152,1-5.
MLA You, Chao,et al."Levoglucosan on Tibetan glaciers under different atmospheric circulations".ATMOSPHERIC ENVIRONMENT 152(2017):1-5.
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