Contributions of aerosol composition and sources to particulate optical properties in a southern coastal city of China | |
Tian, Jie4,5,6; Wang, Qiyuan4,5,6; Han, Yongming4,5; Ye, Jianhuai1; Wang, Ping2; Pongpiachan, Siwatt3; Ni, Haiyan4; Zhou, Yaqing4; Wang, Meng4; Zhao, Youzhi2 | |
刊名 | ATMOSPHERIC RESEARCH |
2020-05-01 | |
卷号 | 235页码:10 |
关键词 | PM2.5 Light extinction Chemical composition Source apportionment |
ISSN号 | 0169-8095 |
DOI | 10.1016/j.atmosres.2019.104744 |
通讯作者 | Wang, Qiyuan(wangqy@ieecas.cn) ; Cao, Junji(cao@loess.llqg.ac.cn) |
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 (b(scat,dry)) and light absorption coefficient (b(abs)) were 32.5 +/- 15.5 Mm(-1) and 8.8 +/- 4.7 Mm(-1), respectively. Diurnal cycles in b(scat,dry) and b(abs) were observed with peak values in the morning and at night. Both b(scat,dry )and b(abs) 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 (b(ext,dry) = b(scat,dry) b(abs)), respectively. Ammonium sulfate and organic matter were the dominant contributors to b(ext,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 b(ext,dry) during the daytime and nighttime, respectively. Backward trajectory analysis further explored the impact of potential sources to b(ext,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. |
资助项目 | National Natural Science Foundation of China[41661144020] ; National Natural Science Foundation of China[41705106] ; Key Research and Development Program of Shaanxi Province[2018-ZDXM3-01] ; China Postdoctoral Science Foundation[2018M633523] ; China Postdoctoral Science Foundation[2015M580890] ; Chinese Academy of Sciences[KLACP1703] ; Chinese Academy of Sciences[SKLLQG1529] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2019402] |
WOS关键词 | SOURCE APPORTIONMENT ; LIGHT EXTINCTION ; CHEMICAL-CHARACTERIZATION ; SOURCE PROFILES ; BLACK CARBON ; PM2.5 MASS ; URBAN AREA ; GUANGZHOU ; IMPROVE ; VISIBILITY |
WOS研究方向 | Meteorology & Atmospheric Sciences |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE INC |
WOS记录号 | WOS:000525322800011 |
资助机构 | National Natural Science Foundation of China ; Key Research and Development Program of Shaanxi Province ; China Postdoctoral Science Foundation ; Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
内容类型 | 期刊论文 |
源URL | [http://ir.ieecas.cn/handle/361006/12593] |
专题 | 地球环境研究所_粉尘与环境研究室 第四纪科学与全球变化卓越创新中心 |
通讯作者 | Wang, Qiyuan; Cao, Junji |
作者单位 | 1.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA 2.Hainan Trop Ocean Univ, Sanya 572022, Peoples R China 3.NIDA, Sch Social & Environm Dev, Bangkok 10240, Thailand 4.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 5.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 6.Shaanxi Key Lab Atmospher & Haze Fog Pollut Preve, Xian 710061, Peoples R China |
推荐引用方式 GB/T 7714 | Tian, Jie,Wang, Qiyuan,Han, Yongming,et al. Contributions of aerosol composition and sources to particulate optical properties in a southern coastal city of China[J]. ATMOSPHERIC RESEARCH,2020,235:10. |
APA | Tian, Jie.,Wang, Qiyuan.,Han, Yongming.,Ye, Jianhuai.,Wang, Ping.,...&Cao, Junji.(2020).Contributions of aerosol composition and sources to particulate optical properties in a southern coastal city of China.ATMOSPHERIC RESEARCH,235,10. |
MLA | Tian, Jie,et al."Contributions of aerosol composition and sources to particulate optical properties in a southern coastal city of China".ATMOSPHERIC RESEARCH 235(2020):10. |
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