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DOI	10.1016/j.atmosres.2019.03.003
	Identification of absorbing aerosol types at a site in the northern edge of Indo-Gangetic Plain and a polluted valley in the foothills of the central Himalayas
	Rupakheti, Dipesh; Kang, Shichang; Rupakheti, Maheswar; Cong, Zhiyuan; Panday, Arnico K.; Holben, Brent N.
通讯作者	Rupakheti, D ; Kang, SC (通讯作者)
发表日期	2019
ISSN	0169-8095
EISSN	1873-2895
起始页码	15
结束页码	23
卷号	223
英文摘要	Identification of atmospheric aerosol types and characterization of absorbing aerosols, based on AErosol RObotic NETwork (AERONET) data collected during 2013-2014 over two sites in Nepal: Lumbini in the northernmost part of central Indo-Gangetic Plain (IGP) and Kathmandu Valley in foothills of the central Himalayas, have been conducted in the present study. The relationship between four aerosol parameters; Extinction Angstrom Exponent (EAE), Absorption Angstrom Exponent (AAE), Single Scattering Albedo (SSA) and Real Refractive Index (RRI) was analyzed to study the aerosol types. This resulted in the identification of two types of aerosols concerning their origin: biomass burning and urban/industrial mix. Furthermore, to understand the absorbing aerosol types, the relationship between aerosol size parameters; Fine Mode Fraction (FMF) and Angstrom Exponent (AE), and aerosol absorption characteristics; SSA and AAE were investigated. In regards to the absorbing aerosol types, 'Mostly BC' was the dominant absorbing aerosol, over both sites, with comparatively negligible contribution from other absorbing aerosol types such as dust. The aerosol subtypes obtained from satellite-borne CALMS instrument supported the results derived from the AERONET data. The CALIPSO images also indicated that the aerosols over the foothills of the Himalayas could extend to the height of > 5 km above the ground, which could be transported towards the Himalayan and Tibetan Plateau (HTP) region with sensitive ecosystems. The multi-sites based study of long-term records is required to elucidate the nature and trends of aerosols in the HTP region and any perturbation to the atmospheric environment and other environments in this region.
关键词	OPTICAL-PROPERTIES KATHMANDU VALLEY WINTERTIME CHARACTERISTICS ATMOSPHERIC AEROSOLS BROWN CLOUDS 4 LOCATIONS URBAN SITE ABSORPTION AERONET CARBON
英文关键词	Aerosol types; Absorbing aerosols; Biomass burning; Urban industrial; Mostly BC; Central Himalayas
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000464480400002
来源期刊	ATMOSPHERIC RESEARCH
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/259588
推荐引用方式 GB/T 7714	Rupakheti, Dipesh,Kang, Shichang,Rupakheti, Maheswar,et al. Identification of absorbing aerosol types at a site in the northern edge of Indo-Gangetic Plain and a polluted valley in the foothills of the central Himalayas[J]. 中国科学院青藏高原研究所,2019,223.
APA	Rupakheti, Dipesh,Kang, Shichang,Rupakheti, Maheswar,Cong, Zhiyuan,Panday, Arnico K.,&Holben, Brent N..(2019).Identification of absorbing aerosol types at a site in the northern edge of Indo-Gangetic Plain and a polluted valley in the foothills of the central Himalayas.ATMOSPHERIC RESEARCH,223.
MLA	Rupakheti, Dipesh,et al."Identification of absorbing aerosol types at a site in the northern edge of Indo-Gangetic Plain and a polluted valley in the foothills of the central Himalayas".ATMOSPHERIC RESEARCH 223(2019).