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DOI	10.1016/j.atmosenv.2017.02.029
	Composition and mixing states of brown haze particle over the Himalayas along two transboundary south-north transects
	Dong, Zhiwen; Kang, Shichang; Guo, Junming; Zhang, Qianggong; Wang, Xuejia; Qin, Dahe
通讯作者	Kang, SC (通讯作者)
发表日期	2017
ISSN	1352-2310
EISSN	1873-2844
起始页码	24
结束页码	35
卷号	156
英文摘要	Pollutants that are usually transported from southern Asia to the Tibetan Plateau deposit on the Plateau surface, change snow albedo and thereby surface radiative flux. This results numerous climatic implications like as erratic monsoon, perturbation in hydrological cycle, etc. However, the accurate estimation of these climatic implications is not well understood, because the atmospheric pollution is a heterogeneous mixture of various particle types. Therefore, this part of climate research requires a detailed investigation of physical and chemical properties of atmospheric pollutants. This study aimed to examine the physical and chemical properties of atmospheric pollutants across the Himalayan regions along two transboundary south-north transects. The information of individual-particles was obtained using microscopy-based techniques that comprises transmission electron microscope (TEM) and Energy-dispersive X-ray spectrometer (EDX). Study capture the signatures of various types of atmospheric species such as black carbon (BC), mineral dust, fly ash, organic matter, sulfate, nitrite, ammonium, and NaCI. Microscopy-based techniques confirm that these particles were generally in mixing state, for example salt-coated particles accounting for 25-56% of the total particles in sampled locations. Our analysis shows that urban and rural locations are characterized with atmospheric particles which sourced from anthropogenic activities, whereas remote locations with those released from natural crustal. However, the relative contributions of anthropogenic particles were higher than that of particles released from natural crustal. The presence of such particles over remote locations of Himalayan region provides an evidence of prevailing atmospheric transport processes, which further need to be well understood. It is expected that this work would be helpful in understanding the regional atmospheric conditions and the transboundary transport process of haze particles. As these informations are of great importance in modeling studies, which further lead to improve understanding of haze particles climate effects. (C) 2017 Elsevier Ltd. All rights reserved.
关键词	TIBETAN PLATEAU BLACK CARBON AEROSOL-PARTICLES INDIAN HIMALAYA NORTHWESTERN HIMALAYA BACKGROUND AEROSOL HYDROLOGICAL CYCLE OPTICAL-PROPERTIES MONSOON CLIMATE ALPINE GLACIERS
英文关键词	Brown haze; TEM-EDX; Mixing states; Himalayas; 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:000399628900003
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/258898
推荐引用方式 GB/T 7714	Dong, Zhiwen,Kang, Shichang,Guo, Junming,et al. Composition and mixing states of brown haze particle over the Himalayas along two transboundary south-north transects[J]. 中国科学院青藏高原研究所,2017,156.
APA	Dong, Zhiwen,Kang, Shichang,Guo, Junming,Zhang, Qianggong,Wang, Xuejia,&Qin, Dahe.(2017).Composition and mixing states of brown haze particle over the Himalayas along two transboundary south-north transects.ATMOSPHERIC ENVIRONMENT,156.
MLA	Dong, Zhiwen,et al."Composition and mixing states of brown haze particle over the Himalayas along two transboundary south-north transects".ATMOSPHERIC ENVIRONMENT 156(2017).