气候变化领域集成服务门户(CCPortal): Contributions of aerosol composition and sources to particulate optical properties in a southern coastal city of China

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DOI	10.1016/j.atmosres.2019.104744
	Contributions of aerosol composition and sources to particulate optical properties in a southern coastal city of China
	Tian J.; Wang Q.; Han Y.; Ye J.; Wang P.; Pongpiachan S.; Ni H.; Zhou Y.; Wang M.; Zhao Y.; Cao J.
发表日期	2020
ISSN	0169-8095
卷号	235
英文摘要	The contributions of chemical composition and emission sources to aerosol optical properties were evaluated for a coastal city in southern China. The average dry light scattering coefficient (bscat,dry) and light absorption coefficient (babs) were 32.5 ± 15.5 Mm−1 and 8.8 ± 4.7 Mm−1, respectively. Diurnal cycles in bscat,dry and babs were observed with peak values in the morning and at night. Both bscat,dry and babs varied with wind speeds and directions, and thus affected by transport pathways. Chemical composition data for 12-h PM2.5 samples were used with the revised IMPROVE algorithm and a Hybrid Environmental Receptor Model to evaluate aerosol composition and source contributions to dry light extinction (bext,dry = bscat,dry + babs), respectively. Ammonium sulfate and organic matter were the dominant contributors to bext,dry, followed by elemental carbon, sea salt, fine soil, and ammonium nitrate. The six PM2.5 sources identified were secondary sulfate source, biomass burning, marine emission, fugitive dust, traffic-related emission, and shipping emission. Marine emission and secondary sulfate source were the largest contributors of bext,dry during the daytime and nighttime, respectively. Backward trajectory analysis further explored the impact of potential sources to bext,dry at Sanya from surrounding regions. The results of our study would be useful for improving models of radiative effects from different sources in this area. © 2019 Elsevier B.V.
英文关键词	Chemical composition; Light extinction; PM2.5; Source apportionment
学科领域	Aerosols; Light extinction; Light scattering; Nitrogen compounds; Particles (particulate matter); Sulfur compounds; Backward trajectory analysis; Chemical composition data; Chemical compositions; Light absorption coefficients; Light scattering coefficient S; PM2.5; Source apportionment; Traffic-related emissions; Optical properties; aerosol composition; chemical composition; optical property; particulate matter; source apportionment; China
语种	英语
scopus关键词	Aerosols; Light extinction; Light scattering; Nitrogen compounds; Particles (particulate matter); Sulfur compounds; Backward trajectory analysis; Chemical composition data; Chemical compositions; Light absorption coefficients; Light scattering coefficient S; PM2.5; Source apportionment; Traffic-related emissions; Optical properties; aerosol composition; chemical composition; optical property; particulate matter; source apportionment; China
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/120510
作者单位	Key Laboratory of Aerosol Chemistry & Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China; Shaanxi Key Laboratory of Atmospheric and Haze-fog Pollution Prevention, Xi'an, 710061, China; School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, United States; Hainan Tropical Ocean University, Sanya, 572022, China; School of Social & Environmental Development, National Institute of Development Administration (NIDA), Bangkok, 10240, Thailand
推荐引用方式 GB/T 7714	Tian J.,Wang Q.,Han Y.,et al. Contributions of aerosol composition and sources to particulate optical properties in a southern coastal city of China[J],2020,235.
APA	Tian J..,Wang Q..,Han Y..,Ye J..,Wang P..,...&Cao J..(2020).Contributions of aerosol composition and sources to particulate optical properties in a southern coastal city of China.Atmospheric Research,235.
MLA	Tian J.,et al."Contributions of aerosol composition and sources to particulate optical properties in a southern coastal city of China".Atmospheric Research 235(2020).