Light-absorbing impurities accelerate glacier melt in the Central Tibetan Plateau
文献类型：期刊论文
| 作者 | Li, XF (Li, Xiaofei)7,8; Kang, SC (Kang, Shichang)1,7,8; He, XB (He, Xiaobo)2,7; Qu, B (Qu, Bin)3; Tripathee, L (Tripathee, Lekhendra)6,7; Jing, ZF (Jing, Zhefan)7; Paudyal, R (Paudyal, Rukumesh)6,7,8; Li, Y (Li, Yang)4,8; Zhang, YL (Zhang, Yulan)7; Yan, FP (Yan, Fangping)3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2017 |
| 卷号 | 587-588期号:0页码:482-490 |
| 关键词 | Black-carbon High Asia Snow China Climate Aerosols Albedo Ice Sensitivity Balance |
| DOI | 10.1016/j.scitotenv.2017.02.169 |
| 文献子类 | Article |
| 英文摘要 | Light-absorbing impurities (LAIs), such as organic carbon (OC), black carbon (BC), and mineral dust (MD) deposited on the glacier surface can reduce albedo, thus accelerating the glacier melt Surface fresh snow, aged snow, granular ice, and snowpits samples were collected between August 2014 and October 2015 on the Xiao Dongkemadi (XDKMD) glacier (33 degrees 04'N, 92 degrees 04'E) in the central Tibetan Plateau (TP). The Spatiotemporal variations of LAIs concentrations in the surface snow/ice were observed to be consistent, differing mainly in magnitudes. LAIs concentrations were found to be in the order: granular ice > snowpit > aged snow > fresh snow, which must be because of post-depositional effects and enrichment. In addition, more intense melting led to higher LAIs concentrations exposed to the surface at a lower elevation, suggesting a strong negative relationship between LA's concentrations and elevation. The scavenging efficiencies of OC and BC were same (0.07 +/- 0.02 for OC, 0.07 +/- 0.01 for BC), and the highest enrichments was observed in late September and August for surface snow and granular ice, respectively. Meanwhile, as revealed by the changes in the OC/BC ratios, intense glacier melt mainly occurred between August and October. Based on the SNow ICe Aerosol Radiative (SNICAR) model simulations, BC and MD in the surface snow/ice were responsible for about 52% +/- 19% and 25% +/- 14% of the albedo reduction, while the radiative forcing (RF) were estimated to be 42.74 +/- 40.96 W m(-2) and 21.23 +/- 22.08 W m(-2), respectively. Meanwhile, the highest RF was observed in the granular ice, suggesting that the exposed glaciers melt and retreat more easily than the snow distributed glaciers. Furthermore, our results suggest that BC was the main forcing factor compared with MD in accelerating glacier melt during the melt season in the Central TP. (C) 2017 Elsevier B.V. All rights reserved. |
| 学科主题 | 自然地理学 |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000399845800051 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/8234]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Kang, SC |
| 作者单位 | 1.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China. 2.State Key Lab Cryospher Sci, Tanggula Cryosphere & Environm Observat Stn, Lanzhou 730000, Peoples R China. 3.Lappeenranta Univ Technol, Lab Green Chem, Sammonkatu 12, FIN-50130 Mikkeli, Finland. 4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Iand Surface P, Beijing 100101, Peoples R China. 5.China Meteorol Adm, Inst Arid Meteorol, Key Lab Arid Climat Change & Disaster Reducing Ga, Lanzhou 730020, Peoples R China. 6.HERI, Kathmandu, Nepal. 7.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China. 8.Univ Chinese Acad Sci, Beijing 100049, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Li, XF ,Kang, SC ,He, XB ,et al. Light-absorbing impurities accelerate glacier melt in the Central Tibetan Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,587-588(0):482-490. |
| APA | Li, XF .,Kang, SC .,He, XB .,Qu, B .,Tripathee, L .,...&Kang, SC.(2017).Light-absorbing impurities accelerate glacier melt in the Central Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,587-588(0),482-490. |
| MLA | Li, XF ,et al."Light-absorbing impurities accelerate glacier melt in the Central Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 587-588.0(2017):482-490. |
入库方式： OAI收割
来源：青藏高原研究所
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