High light absorption and radiative forcing contributions of primary brown carbon and black carbon to urban aerosol

doi:10.1016/j.gr.2020.10.016

IEECAS OpenIR > 粉尘与环境研究室

	High light absorption and radiative forcing contributions of primary brown carbon and black carbon to urban aerosol
	Zhu, Chong-Shu 1,3; Qu, Yao 1; Zhou, Yue 1; Huang, Hong 2; Liu, Hui-Kun 1; Yang, Lu 1; Wang, Qi-Yuan 1; Hansen, Anthony D. A.4; Cao, Jun-Ji 1,3
通讯作者	Zhu, Chong-Shu(chongshu@ieecas.cn) ; Huang, Hong(honghuang@ncu.edu.cn)
	2021-02-01
发表期刊	GONDWANA RESEARCH
ISSN	1342-937X
卷号	90 页码:159-164
摘要	To investigate the seasonal variation of black carbon (BC) and brown carbon (BrC) light absorption at an urban site in Xi'an, China, an annual measurement was conducted by using a 7-wavelengths Aethalometer (model AE33). The results showed the aerosol absorptions were observed approximately 5-8 times greater in winter (395 Mm(-1) at 370 nm and 99 Mm(-1) at 880 nm, respectively) than those in autumn (49 Mm(-1) at 370 nm and 18 Mm(-1) at 880 nm, respectively). BC was the dominant light absorbing carbonaceous component at all wavelengths (from 370 nm to 950 nm). BrC absorption (370 nm) maximized during winter with 41% of the total aerosol absorption, and was lower in autumn (16%). The light absorption contributions of primary BrC (BrCpri) were higher than that of secondary BrC (BrCsec) in four seasons, with more than 67% of total BrC light absorption. The seasonal absorption Angstrom exponents (AAEs) of BrC, BrCpri, and BrCsec were directly derived with the highest values (3.91, 3.69, and 4.94, respectively) in wintertime. The BrCpri contributed much higher solar absorptions percentage to BC than BrCsec. The results underlined the primary emissions of urban BrCpri and BC, implying that the strategies of energy efficiency enhancement and energy structure reformation will be very important in reducing primary emissions in China. Such investigations should be conducted in other developing countries with severe air pollution. (c) 2020 Published by Elsevier B.V. on behalf of International Association for Gondwana Research.
关键词	Light absorption Black carbon Primary brown carbon Secondary brown carbon
DOI	10.1016/j.gr.2020.10.016
收录类别	SCI ; SCI
语种	英语
资助项目	Ministry of Science and Technology of the People's Republic of China[2017YFC0212200]
WOS研究方向	Geology
项目资助者	Ministry of Science and Technology of the People's Republic of China
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000617125300004
出版者	ELSEVIER
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/16050
专题	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	Zhu, Chong-Shu; Huang, Hong
作者单位	1.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China 2.NanChang Univ, Sch Resource Environm & Chem Engn, Nanchang 330031, Jiangxi, Peoples R China 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Magee Sci Corp, Berkeley, CA 94702 USA
推荐引用方式 GB/T 7714	Zhu, Chong-Shu,Qu, Yao,Zhou, Yue,et al. High light absorption and radiative forcing contributions of primary brown carbon and black carbon to urban aerosol[J]. GONDWANA RESEARCH,2021,90:159-164.
APA	Zhu, Chong-Shu.,Qu, Yao.,Zhou, Yue.,Huang, Hong.,Liu, Hui-Kun.,...&Cao, Jun-Ji.(2021).High light absorption and radiative forcing contributions of primary brown carbon and black carbon to urban aerosol.GONDWANA RESEARCH,90,159-164.
MLA	Zhu, Chong-Shu,et al."High light absorption and radiative forcing contributions of primary brown carbon and black carbon to urban aerosol".GONDWANA RESEARCH 90(2021):159-164.