Continuous Measurement and Molecular Compositions of Atmospheric Water-Soluble Brown Carbon in the Nearshore Marine Boundary Layer of Northern China: Secondary Formation and Influencing Factors

doi:10.1029/2023JD038565

HFCAS OpenIR

	Continuous Measurement and Molecular Compositions of Atmospheric Water-Soluble Brown Carbon in the Nearshore Marine Boundary Layer of Northern China: Secondary Formation and Influencing Factors
	Li, Hao 1; Qin, Xiaofei 1; Chen, Jia 1; Wang, Guochen 1; Liu, Chengfeng 1; Lu, Da 1; Zheng, Haitao2 ; Song, Xiaoquan 3; Gao, Qianqian 1; Xu, Jian 1; Zhu, Yucheng 1; Liu, Jianguo2 ; Wang, Xiaofei1 ; Deng, Congrui 1; Huang, Kan 1,4,5
	2023-06-27
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
通讯作者	Huang, Kan(huangkan@fudan.edu.cn)
摘要	Understanding the evolution of brown carbon (BrC) in the atmosphere is essential for investigating its climate effects. This study deployed a novel in-situ BrC continuous observation system to firstly measure water-soluble BrC absorption (Abs(WS-BrC)) in an offshore island over the Bohai Sea in the winter of 2020. The Abs(WS-BrC) abundance before the cold wave (BCW) was more than twice higher than that after the cold wave (ACW). This was mainly ascribed to the substantially suppressed formation of secondary WS-BrC (WS-BrCsec). Diurnal patterns of Abs(WS-BrC) exhibited nighttime peaks, which derived from enhanced primary emissions and strong aqueous-phase processes. Photochemical processes bleached daytime WS-BrC during BCW, while daytime peaks of WS-BrCsec emerged during ACW due to the weakened photobleaching effect. Statistical analysis indicated ambient temperature and relative humidity as well as total oxidized nitrogen (NO2 + NO3-) and reduced nitrogen (NH4+ + NH3) were the dominant factors promoting WS-BrCsec. Moderate aerosol pH (>2.5) also facilitated the formation of WS-BrCsec while no obvious dependences of WS-BrCsec on gas-particle partitioning of ammonia, O-3, and sulfur precursors were found. At the molecular level, BrC chromophores with the identified compositions, carbon oxidation state, O/C, H/C, and absorption spectra were compared between the two periods. Characteristics of water-soluble CHO- and CHON-BrC were more of secondary origin during BCW, while primary emissions contributed significantly to BrC chromophores during ACW. This study highlights the advantage of high resolution BrC measurement in probing its dynamic evolution and influencing factors.
DOI	10.1029/2023JD038565
关键词[WOS]	ORGANIC AEROSOL FORMATION ; THERMODYNAMIC-EQUILIBRIUM MODEL ; LIGHT-ABSORPTION PROPERTIES ; BIOMASS-BURNING AEROSOL ; OPTICAL-PROPERTIES ; BLACK CARBON ; REACTIVE UPTAKE ; LIQUID WATER ; ABSORBING PROPERTIES ; AROMATIC-COMPOUNDS
收录类别	SCI
语种	英语
资助项目	National Key Ramp;D Plan programs[2018YFC0213105] ; National Natural Science Foundation of China[42175119]
项目资助者	National Key Ramp;D Plan programs ; National Natural Science Foundation of China
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001022731400001
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/132462
专题	中国科学院合肥物质科学研究院
通讯作者	Huang, Kan
作者单位	1.Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Preve, Natl Observat & Res Stn Wetland Ecosyst Yangtze Es, Shanghai, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei, Peoples R China 3.Ocean Univ China, Coll Marine Technol, Fac Informat Sci & Engn, Qingdao, Peoples R China 4.Inst Ecochongming, Shanghai, Peoples R China 5.Fudan Univ, IRDR ICoE Risk Interconnect & Governance Weather C, Shanghai, Peoples R China
推荐引用方式 GB/T 7714	Li, Hao,Qin, Xiaofei,Chen, Jia,et al. Continuous Measurement and Molecular Compositions of Atmospheric Water-Soluble Brown Carbon in the Nearshore Marine Boundary Layer of Northern China: Secondary Formation and Influencing Factors[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2023,128.
APA	Li, Hao.,Qin, Xiaofei.,Chen, Jia.,Wang, Guochen.,Liu, Chengfeng.,...&Huang, Kan.(2023).Continuous Measurement and Molecular Compositions of Atmospheric Water-Soluble Brown Carbon in the Nearshore Marine Boundary Layer of Northern China: Secondary Formation and Influencing Factors.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,128.
MLA	Li, Hao,et al."Continuous Measurement and Molecular Compositions of Atmospheric Water-Soluble Brown Carbon in the Nearshore Marine Boundary Layer of Northern China: Secondary Formation and Influencing Factors".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 128(2023).