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DOI	10.1016/j.atmosenv.2020.117820
	Implications of different aerosol species to direct radiative forcing and atmospheric heating rate
	Srivastava A.K.; Mehrotra B.J.; Singh A.; Singh V.; Bisht D.S.; Tiwari S.; Srivastava M.K.
发表日期	2020
ISSN	13522310
卷号	241
英文摘要	The optical and radiative characteristics of water-soluble and carbonaceous aerosol species in the PM2.5 samples were examined for a representative megacity over the Indo-Gangetic Basin (IGB). Aerosol optical and radiative transfer models were used to extract sulphate (SO4), nitrate (NO3), organic carbon (OC) and elemental carbon (EC) from the observations done in 2012. Initial results suggest that the mass concentration of OC dominated over other species, but impacts on optical characteristics were mostly due to the SO4 aerosols. Further, EC shows relatively large impact on radiative forcing. The aerosol optical depth (AOD) at 500 nm for SO4, NO3, EC and OC was found to be contributing ~36%, 20%, 27% and 9%, respectively in the total AOD value (0.61 ± 0.18) during the entire study period. The single scattering albedo (SSA) for SO4 and NO3 was high and suggested their scattering nature; however, being the highly absorbing species, EC was found to show the lowest values of SSA during the study period. SSA for OC was, however, ~0.70, which was found to show the second highest warming species in the atmosphere with contribution of ~10%, after EC, which caused the highest warming (~70%), to the total atmospheric forcing. © 2020 Elsevier Ltd
英文关键词	Aerosol optical properties; Atmospheric heating rate; Indo-gangetic basin; PM2.5; Radiative forcing
语种	英语
scopus关键词	Atmospheric radiation; Organic carbon; Radiative transfer; Sulfur compounds; Aerosol optical depths; Atmospheric heating rate; Carbonaceous aerosol; Direct radiative forcing; Optical characteristics; Radiative characteristics; Radiative transfer model; Single scattering albedo; Aerosols; carbon; nitrate; organic carbon; sulfate; aerosol; albedo; concentration (composition); elemental carbon; heating; optical property; particulate matter; radiative forcing; aerosol; Article; atmosphere; heating; optical depth; particulate matter; priority journal; radiative forcing; rainy season; solar radiation; summer; winter
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/144960
作者单位	Indian Institute of Tropical Meteorology, Ministry of Earth Sciences, New Delhi, India; Department of Geophysics, Banaras Hindu University, Varanasi, India; Institute of Environment & Sustainable Development, Banaras Hindu University, Varanasi, India
推荐引用方式 GB/T 7714	Srivastava A.K.,Mehrotra B.J.,Singh A.,et al. Implications of different aerosol species to direct radiative forcing and atmospheric heating rate[J],2020,241.
APA	Srivastava A.K..,Mehrotra B.J..,Singh A..,Singh V..,Bisht D.S..,...&Srivastava M.K..(2020).Implications of different aerosol species to direct radiative forcing and atmospheric heating rate.Atmospheric Environment,241.
MLA	Srivastava A.K.,et al."Implications of different aerosol species to direct radiative forcing and atmospheric heating rate".Atmospheric Environment 241(2020).