干旱区生态环境知识资源中心(Arid): Light-absorbing impurities on Keqikaer Glacier in western Tien Shan: concentrations and potential impact on albedo reduction

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	Light-absorbing impurities on Keqikaer Glacier in western Tien Shan: concentrations and potential impact on albedo reduction
	Zhang Yulan; Kang Shichang; Xu Min; Sprenger Michael; Gao Tanguang; Cong Zhiyuan; Li Chaoliu; Guo Junming; Xu Zhiqiang; Li Yang; Li Gang; Li Xiaofei; Liu Yajun; Han Haidong
来源期刊	Sciences in Cold and Arid Regions
ISSN	1674-3822
出版年	2017
卷号	9 期号:2 页码:97-111
英文摘要	Light-absorbing impurities on glaciers are important factors that influence glacial surface albedo and accelerate glacier melt. In this study, the quantity of light-absorbing impurities on Keqikaer Glacier in western Tien Shan, Central Asia, was measured. We found that the average concentrations of black carbon was 2,180 ng/g, with a range from 250 ng/g to more than 10,000 ng/g. The average concentrations of organic carbon and mineral dust were 1,738 ng/g and 194 mug/g, respectively. Based on simulations performed with the Snow Ice Aerosol Radiative model simulations, black carbon and dust are responsible for approximately 64% and 9%, respectively, of the albedo reduction, and are associated with instantaneous radiative forcing of 323.18 W/m~2 (ranging from 142.16 to 619.25 W/m~2) and 24.05 W/m~2 (ranging from 0.15 to 69.77 W/m~2), respectively. For different scenarios, the albedo and radiative forcing effect of black carbon is considerably greater than that of dust. The estimated radiative forcing at Keqikaer Glacier is higher than most similar values estimated by previous studies on the Tibetan Plateau, perhaps as a result of black carbon enrichment by melt scavenging. Light-absorbing impurities deposited on Keqikaer Glacier appear to mainly originate from central Asia, Siberia, western China (including the Taklimakan Desert) and parts of South Asia in summer, and from the Middle East and Central Asia in winter. A footprint analysis indicates that a large fraction (>60%) of the black carbon contributions on Keqikaer Glacier comes from anthropogenic sources. These results provide a scientific basis for regional mitigation efforts to reduce black carbon.
英文关键词	light-absorbing impurities black carbon mineral dust glacier snow albedo Tien Shan
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:5983382
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335793
作者单位	Zhang Yulan, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, State Key Laboratory of Cryospheric Sciences, Lanzhou, Gansu 730000, China.; Kang Shichang, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, State Key Laboratory of Cryospheric Sciences, Lanzhou, Gansu 730000, China.; Xu Min, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, State Key Laboratory of Cryospheric Sciences, Lanzhou, Gansu 730000, China.; Li Xiaofei, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, State Key Laboratory of Cryospheric Sciences, Lanzhou, Gansu 730000, China.; Liu Yajun, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, State Key Laboratory of Cryospheric Sciences, Lanzhou, Gansu 730000, China.; Han Haidong, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, State Key Laboratory of Cryospheric Sciences, Lanzhou, Gansu 730000, Ch...
推荐引用方式 GB/T 7714	Zhang Yulan,Kang Shichang,Xu Min,et al. Light-absorbing impurities on Keqikaer Glacier in western Tien Shan: concentrations and potential impact on albedo reduction[J],2017,9(2):97-111.
APA	Zhang Yulan.,Kang Shichang.,Xu Min.,Sprenger Michael.,Gao Tanguang.,...&Han Haidong.(2017).Light-absorbing impurities on Keqikaer Glacier in western Tien Shan: concentrations and potential impact on albedo reduction.Sciences in Cold and Arid Regions,9(2),97-111.
MLA	Zhang Yulan,et al."Light-absorbing impurities on Keqikaer Glacier in western Tien Shan: concentrations and potential impact on albedo reduction".Sciences in Cold and Arid Regions 9.2(2017):97-111.