<p>Conjoint impacts of continental outflows and marine sources on brown carbon in the East China sea: Abundances, optical properties, and formation processes & nbsp;</p>

doi:10.1016/j.atmosenv.2022.118959

	Conjoint impacts of continental outflows and marine sources on brown carbon in the East China sea: Abundances, optical properties, and formation processes & nbsp;
	Li, Hao 1; Qin, Xiaofei 1; Wang, Guochen 1; Xu, Jian 1; Wang, Lan 1; Lu, Da 1; Liu, Cheng 2; Zheng, Haitao 3; Liu, Jianguo 3; Huang, Kan 1,4,5
刊名	ATMOSPHERIC ENVIRONMENT
	2022-03-15
卷号	273
ISSN号	1352-2310
DOI	10.1016/j.atmosenv.2022.118959
通讯作者	Huang, Kan(huangkan@fudan.edu.cn) ; Deng, Congrui(congruideng@fudan.edu.cn)
英文摘要	Brown carbon (BrC), as a short-lived climate forcer, is still poorly understood due to its insufficient quantification of chemical compositions, ambiguous optical properties, and complex formation mechanisms. This study firstly investigated the characteristics of BrC over a remote island of the East China Sea during the winter of 2019. Driven by the continental outflows, BrC increased 3-8 times than the clean episodes. Different from most urban studies, high water-soluble organic carbon to organic carbon (WSOC/OC) ratios (66% +/- 18%) and low MS-BrC/WS-BrC ratios (methanol extracts vs. water extracts, 1.1) were observed, which resulted from the aging processes via the long-range transport over the ocean. When air masses originated from northern China with long travelling history over the ocean, aqueous phase processing promoted the formation of BrC under rich ammonium and nitrate. In contrast, air masses from eastern China travelled over less oceanic areas and were characterized of higher oxidation capacity, suggesting a dominant role of gas-phase processing in the formation of BrC. Biomass burning, fossil fuels combustion, and marine sources were apportioned as the major contributors to carbonaceous aerosols, of which marine sources accounted for more than 30%. The fractional solar absorption by BrC relative to elemental carbon in the ultraviolet range (300-400 nm) was simulated as 17.3 +/- 7.51% for WS-BrC and 21.18 +/- 7.97% for MS-BrC, indicating a non-negligible role of BrC in perturbating the radiative forcing in the marine atmosphere.& nbsp;
资助项目	National Science Foun-dation of China[42175119] ; National Science Foun-dation of China[91644105] ; National Key R&D Program of China[2018YFC0213105] ; Natural Science Foundation of Shanghai[20ZR1422000] ; Natural Science Foundation of Shanghai[19ZR1421100] ; Jiangsu Shuangchuang Program through Jiangsu Fuyu Environ-mental Technology Co., Ltd.
WOS关键词	SOLUBLE ORGANIC-CARBON ; LIGHT-ABSORPTION PROPERTIES ; OBSERVATIONAL CONSTRAINTS ; CHEMICAL CHARACTERISTICS ; MOLECULAR COMPOSITION ; SOURCE APPORTIONMENT ; FORMATION MECHANISMS ; ATMOSPHERIC OUTFLOW ; ELEMENTAL CARBON ; BLACK CARBON
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000788270400004
资助机构	National Science Foun-dation of China ; National Key R&D Program of China ; Natural Science Foundation of Shanghai ; Jiangsu Shuangchuang Program through Jiangsu Fuyu Environ-mental Technology Co., Ltd.
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131567]
专题	中国科学院合肥物质科学研究院
通讯作者	Huang, Kan; Deng, Congrui
作者单位	1.Fudan Univ, Ctr Atmospher Chem Study, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Preve, Shanghai 200433, Peoples R China 2.Univ Sci & Technol China, Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Dept Precis Machinery & Precis Instrumentat,Key La, Hefei 230031, Peoples R China 3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, HFIPS, Hefei 230031, Peoples R China 4.Fudan Univ, IRDR ICoE Risk Interconnect & Governance Weather C, Shanghai 200433, Peoples R China 5.Inst Ecochongming IEC, Shanghai 202162, Peoples R China
推荐引用方式 GB/T 7714	Li, Hao,Qin, Xiaofei,Wang, Guochen,et al. Conjoint impacts of continental outflows and marine sources on brown carbon in the East China sea: Abundances, optical properties, and formation processes & nbsp; [J]. ATMOSPHERIC ENVIRONMENT,2022,273.
APA	Li, Hao.,Qin, Xiaofei.,Wang, Guochen.,Xu, Jian.,Wang, Lan.,...&Deng, Congrui.(2022). Conjoint impacts of continental outflows and marine sources on brown carbon in the East China sea: Abundances, optical properties, and formation processes & nbsp; .ATMOSPHERIC ENVIRONMENT,273.
MLA	Li, Hao,et al." Conjoint impacts of continental outflows and marine sources on brown carbon in the East China sea: Abundances, optical properties, and formation processes & nbsp; ".ATMOSPHERIC ENVIRONMENT 273(2022).