Determining the Sources and Transport of Brown Carbon Using Radionuclide Tracers and Modeling

doi:10.1029/2021JD034616

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 近岸生态与环境实验室

	Determining the Sources and Transport of Brown Carbon Using Radionuclide Tracers and Modeling
	Jiang, Hongxing 1,2,3,4,5; Li, Jun 1,2,3,4; Sun, Rong 1,2,3,4,5; Liu, Guoqing 6; Tian, Chongguo 7; Tang, Jiao 1,2,3,4; Cheng, Zhineng 1,2,3,4; Zhu, Sanyuan 1,2,3,4; Zhong, Guangcai 1,2,3,4; Ding, Xiang 1,2,3,4
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2021-05-16
卷号	126 期号:9 页码:17
关键词	atmospheric dissolved organic matter biomass burning brown carbon radionuclide tracers regional transport Source apportionment
ISSN号	2169-897X
DOI	10.1029/2021JD034616
通讯作者	Li, Jun(junli@gig.ac.cn)
英文摘要	The isotope tracer technique plays a key role in identifying the sources and atmospheric processes affecting pollution. The sources of brown carbon (BrC) at Guangzhou during 2017-2018 were characterized by positive matrix factorization with radiocarbon isotope constraints and multiple linear regression analysis. The primary emission factors of fossil fuel combustion (FF) and biomass burning (BB) accounted for 34% and 27% of dissolved BrC absorption at lambda = 365 nm (Abs(365)), respectively. The total mean light absorption contributed by secondary sources was 39%. The FF-origin Abs(365) changed insignificantly throughout the year and was dominant in the summer monsoon period, whereas the Abs(365) from BB and secondary nitrate formation increased and contributed larger fractions during the winter monsoon period. Transported BrC was estimated using an index of Be-7/(Be-7 + n(210)Pb). Higher values were generally accompanied by lower Abs(365), whereas lower values were associated with higher Abs(365), indicating that BrC absorption of aerosols transported from the upper-atmosphere is lower than that of aerosols transported near the surface. Based on the positive correlations between Pb-210 and Abs(365) and non-fossil dissolved organic carbon in the winter monsoon period, we estimated that the contribution of invasive BrC (include ground and upper-atmosphere level) to total absorption during the period of elevated BrC was similar to 50%. The transported BrC was likely related to BB organic aerosols and secondary nitrate formation processes. This study supports radionuclides as a novel method for characterizing the sources and transport of BrC that can be applied in future atmospheric research.
资助项目	Natural Science Foundation of China (NSFC)[41773120] ; Natural Science Foundation of China (NSFC)[42030715] ; State Key Laboratory of Organic Geochemistry, GIGCAS[SKLOG 2,020-05] ; Guangdong Foundation for Program of Science and Technology Research[2019B121205006] ; Guangdong Foundation for Program of Science and Technology Research[2020B1212060053]
WOS关键词	SECONDARY ORGANIC AEROSOL ; POSITIVE MATRIX FACTORIZATION ; LIGHT-ABSORPTION CHARACTERISTICS ; PARTICULATE MATTER EMISSIONS ; REGIONAL BACKGROUND SITE ; HUMIC-LIKE SUBSTANCES ; PEARL RIVER DELTA ; OPTICAL-PROPERTIES ; SOURCE APPORTIONMENT ; CHEMICAL CHARACTERISTICS
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000656152800012
资助机构	Natural Science Foundation of China (NSFC) ; State Key Laboratory of Organic Geochemistry, GIGCAS ; Guangdong Foundation for Program of Science and Technology Research
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/29367]
专题	烟台海岸带研究所_近岸生态与环境实验室烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
通讯作者	Li, Jun
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Environm Protect & Resourc, Guangzhou, Peoples R China 3.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Poll, Guangzhou, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China 6.Shenzhen Univ, Dept Nucl Sci & Technol, Coll Phys & Engn, Shenzhen, Peoples R China 7.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Hongxing,Li, Jun,Sun, Rong,et al. Determining the Sources and Transport of Brown Carbon Using Radionuclide Tracers and Modeling[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2021,126(9):17.
APA	Jiang, Hongxing.,Li, Jun.,Sun, Rong.,Liu, Guoqing.,Tian, Chongguo.,...&Zhang, Gan.(2021).Determining the Sources and Transport of Brown Carbon Using Radionuclide Tracers and Modeling.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(9),17.
MLA	Jiang, Hongxing,et al."Determining the Sources and Transport of Brown Carbon Using Radionuclide Tracers and Modeling".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.9(2021):17.