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DOI	10.1016/j.envpol.2021.116544
	Black carbon concentration in the central Himalayas: Impact on glacier melt and potential source contribution
	Gul, Chaman; Mahapatra, Parth Sarathi; Kang, Shichang; Singh, Praveen Kumar; Wu, Xiaokang; He, Cenlin; Kumar, Rajesh; Rai, Mukesh; Xu, Yangyang; Puppala, Siva Praveen
通讯作者	Puppala, SP (通讯作者)，Int Ctr Integrated Mt Dev ICIMOD, GPO Box 3226, Kathmandu, Nepal.
发表日期	2021
ISSN	0269-7491
EISSN	1873-6424
卷号	275
英文摘要	This study discusses year-long (October 2016-September 2017) observations of atmospheric black carbon (BC) mass concentration, its source and sector contributions using a chemical transport model at a high-altitude (28 degrees 12'49.21 '' N, 85 degrees 36'33.77 '' E, 4900 masl) site located near the Yala Glacier in the central Himalayas, Nepal. During a field campaign, fresh snow samples were collected from the surface of the Yala Glacier in May 2017, which were analysed for BC and water-insoluble organic carbon mass concentration in order to estimate the scavenging ratio and surface albedo reduction. The maximum BC mass concentration in the ambient atmosphere (0.73 mu g m(-3)) was recorded in the pre-monsoon season. The BC and water-insoluble organic carbon analysed from the snow samples were in the range of 96-542 ng g(-1) and 152-827 ng g(-1), respectively. The source apportionment study using the absorption Angstrom exponent from in situ observations indicated approximately 44% contribution of BC from biomass-burning sources and the remainder from fossil-fuel sources during the entire study period. The source contribution study, using model data sets, indicated similar to 14% contribution of BC from open-burning and similar to 77% from anthropogenic sources during the study period. Our analysis of regional contributions of BC indicated that the highest contribution was from both Nepal and India combined, followed by China, while the rest was distributed among the nearby countries. The surface snow albedo reduction, estimated by an online model - Snow, Ice, and Aerosol Radiation - was in the range of 0.8-3.8% during the pre-monsoon season. The glacier mass balance analysis suggested that BC contributed to approximately 39% of the total mass loss in the pre-monsoon season. (C) 2021 The Authors. Published by Elsevier Ltd.
关键词	SURFACE-ENERGY-BALANCE LIGHT-ABSORBING IMPURITIES AEROSOL OPTICAL-PROPERTIES SNOW ALBEDO MASS-BALANCE SOUTHERN HIMALAYAS OZONE VARIABILITY NCO-P TIBETAN NEPAL
英文关键词	Hindu Kush Himalaya; Yala glacier; WRF-CHEM simulations; SNICAR; Source studies; Black carbon
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000625380600012
来源期刊	ENVIRONMENTAL POLLUTION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255162
作者单位	[Gul, Chaman; Mahapatra, Parth Sarathi; Singh, Praveen Kumar; Rai, Mukesh; Puppala, Siva Praveen] Int Ctr Integrated Mt Dev ICIMOD, GPO Box 3226, Kathmandu, Nepal; [Gul, Chaman; Kang, Shichang; Rai, Mukesh] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 73000, Peoples R China; [Gul, Chaman] Nanjing Univ Informat Sci & Technol, Reading Acad, Nanjing 210044, Jiangsu, Peoples R China; [Gul, Chaman; Kang, Shichang; Rai, Mukesh] Univ Chinese Acad Sci, Beijing, Peoples R China; [Kang, Shichang] CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; [Singh, Praveen Kumar] Indian Inst Technol Roorkee, Ctr Excellence Disaster Mitigat & Management, Roorkee 247667, Uttarakhand, India; [Wu, Xiaokang; Xu, Yangyang] Texas A&M Univ, Dept Atmospher Sci, College Stn, TX 77843 USA; [He, Cenlin] Natl Ctr Atmospher Res, Adv Study Program, Boulder, CO 80301 USA; [He, Cenlin] Natl Ctr Atmospher Res, Res Applicat Lab, Boulder, CO 80301 USA; [He, Cenlin; Kum...
推荐引用方式 GB/T 7714	Gul, Chaman,Mahapatra, Parth Sarathi,Kang, Shichang,et al. Black carbon concentration in the central Himalayas: Impact on glacier melt and potential source contribution[J]. 中国科学院西北生态环境资源研究院,2021,275.
APA	Gul, Chaman.,Mahapatra, Parth Sarathi.,Kang, Shichang.,Singh, Praveen Kumar.,Wu, Xiaokang.,...&Puppala, Siva Praveen.(2021).Black carbon concentration in the central Himalayas: Impact on glacier melt and potential source contribution.ENVIRONMENTAL POLLUTION,275.
MLA	Gul, Chaman,et al."Black carbon concentration in the central Himalayas: Impact on glacier melt and potential source contribution".ENVIRONMENTAL POLLUTION 275(2021).