气候变化领域集成服务门户(CCPortal): Source apportionment of the light absorbing impurities present in surface snow of the India Western Himalayan glaciers

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DOI	10.1016/j.atmosenv.2020.118173
	Source apportionment of the light absorbing impurities present in surface snow of the India Western Himalayan glaciers
	Thind P.S.; Kumar D.; John S.
发表日期	2021
ISSN	1352-2310
卷号	246
英文摘要	Darkening of surface snow caused by deposition of the Light absorbing impurities (LAIs) can reduce its albedo and further enhance its melting. Early melting of surface snow leads to exposing the underneath ice mass to sunlight for longer duration and consequent retreat of glaciers. This retreat of glaciers, further cause several hydrological and climatic implications. In this study, efforts were made to perform source apportionment of the LAIs found in the surface snow samples, collected from the three glaciers located in the Indian Western Himalayas (IWHs). Ionic composition of the snow samples derived from ion chromatography was further analyzed using two receptor models viz., principal component analysis (PCA) and positive matrix factorization (PMF). It was observed that biomass burning, vehicular emissions, dust emissions and coal combustion were the major sources of the LAIs in the IWHs. The PMF analysis, estimated that biomass burning and vehicular emissions contributed ~30% each in the emission of the LAIs. Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT)-based back trajectories for 7-days were plotted to identify locations of the sources of the LAIs. Back trajectories were observed to pass through agricultural, forest-covered and urban areas. The observations made, during this study, would help local authorities in identifying the hot spots of the LAIs’-emissions, on the basis of which region-specific policies could be framed to mitigate the anthropogenic emissions of the LAIs. © 2020 Elsevier Ltd
关键词	Back trajectory analysis Indian western himalayas Light absorbing impurities Positive matrix factorization Principal component analysis Source apportionment
语种	英语
scopus关键词	Agricultural robots; Coal dust; Factorization; Ion chromatography; Melting; Snow; Trajectories; Anthropogenic emissions; Back trajectories; Ionic composition; Local authorities; Positive Matrix Factorization; Source apportionment; Vehicular emission; Western himalayas; Coal combustion; chemical compound; coal; snow; albedo; anthropogenic source; biomass burning; glacier; glacier retreat; melting; snow; source apportionment; traffic emission; Article; biomass; combustion; controlled study; glacier; ion chromatography; light absorbing impurity; light absorption; principal component analysis; priority journal; urban area; Himalayas; India
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248630
作者单位	Punjab Engineering College, Chandigarh, 160012, India; Department of Geography, Kurukshetra University, Kurukshetra136119, India
推荐引用方式 GB/T 7714	Thind P.S.,Kumar D.,John S.. Source apportionment of the light absorbing impurities present in surface snow of the India Western Himalayan glaciers[J],2021,246.
APA	Thind P.S.,Kumar D.,&John S..(2021).Source apportionment of the light absorbing impurities present in surface snow of the India Western Himalayan glaciers.ATMOSPHERIC ENVIRONMENT,246.
MLA	Thind P.S.,et al."Source apportionment of the light absorbing impurities present in surface snow of the India Western Himalayan glaciers".ATMOSPHERIC ENVIRONMENT 246(2021).