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DOI	10.1016/j.atmosres.2019.104718
	Absorption characteristics of aerosols over the central Himalayas and its adjacent foothills
	Joshi H.; Naja M.; David L.M.; Gupta T.; Gogoi M.M.; Babu S.S.
发表日期	2020
ISSN	0169-8095
卷号	233
英文摘要	The absorption characteristics and source processes of aerosols are investigated at two nearby distinct altitude sites: Nainital, located over the central Himalayas (~1958 m amsl) and Pantnagar, in the adjacent foothill region (~231 m amsl) in the Indo-Gangetic Plain region (IGP); based on in-situ measurements and model (GEOS-Chem) simulations. The study reveals the significant influence of biomass burning sources over both the locations during spring, indicating the efficiency of the vertical transport of biomass burning aerosols during the peak of the fire activity period over the northern Indian region. On the other hand, the dominance of fossil fuel emission sources is seen during most part of the year at the mountain site, while biomass/biofuel sources are prevalent at the foothill site. Simulations of different aerosol components in the GEOS-Chem model have revealed that dust aerosols, in addition to carbonaceous aerosols from fossil fuel and biomass burning sources, significantly influence aerosol burden over this broad region covering both high-altitude site Nainital and adjacent foothill site Pantnagar in IGP. Examination of dominant aerosol types and their contribution to the columnar abundance of aerosols is performed. During spring, the contribution of dust aerosols is as high as 22%, even though inorganic aerosols (42%), organic carbon (29%) play a dominant role in modulating aerosol absorption characteristics in the column over this region. This study highlights the importance of absorbing aerosol, their types and quantification for better estimates of radiative forcing of aerosols over this region. This might also provide valuable information for the regional impact assessment of aerosols over the Himalayan region. © 2019
英文关键词	Aerosol Optical Depth; Black Carbon; Carbonaceous Aerosols; GEOS-Chem; Himalayas
学科领域	Aerosols; Atmospheric radiation; Biomass; Dust; Fossil fuels; Organic carbon; Aerosol optical depths; Black carbon; Carbonaceous aerosol; GEOS-Chem; Himalayas; Atmospheric movements; absorption; aerosol property; biomass burning; black carbon; EOS; fossil fuel; optical depth; source apportionment; Himalayas; India; Nainital; Pantnagar; Uttarakhand
语种	英语
scopus关键词	Aerosols; Atmospheric radiation; Biomass; Dust; Fossil fuels; Organic carbon; Aerosol optical depths; Black carbon; Carbonaceous aerosol; GEOS-Chem; Himalayas; Atmospheric movements; absorption; aerosol property; biomass burning; black carbon; EOS; fossil fuel; optical depth; source apportionment; Himalayas; India; Nainital; Pantnagar; Uttarakhand
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120549
作者单位	Department of Civil Engineering, Indian Institute of Technology, Kanpur, Uttar Pradesh, India; Aryabhatta Research Institute of Observational Sciences, Nainital, Uttarakhand, India; Department of Chemistry and Atmospheric Science, Colorado State UniversityCO, United States; Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram, India
推荐引用方式 GB/T 7714	Joshi H.,Naja M.,David L.M.,et al. Absorption characteristics of aerosols over the central Himalayas and its adjacent foothills[J],2020,233.
APA	Joshi H.,Naja M.,David L.M.,Gupta T.,Gogoi M.M.,&Babu S.S..(2020).Absorption characteristics of aerosols over the central Himalayas and its adjacent foothills.Atmospheric Research,233.
MLA	Joshi H.,et al."Absorption characteristics of aerosols over the central Himalayas and its adjacent foothills".Atmospheric Research 233(2020).