气候变化领域集成服务门户(CCPortal): Light absorption characteristics of carbonaceous aerosols in two remote stations of the southern fringe of the Tibetan Plateau, China

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DOI	10.1016/j.atmosenv.2016.08.042
	Light absorption characteristics of carbonaceous aerosols in two remote stations of the southern fringe of the Tibetan Plateau, China
	Li, Chaoliu; Yan, Fangping; Kang, Shichang; Chen, Pengfei; Hu, Zhaofu; Gao, Shaopeng; Qu, Bin; Sillanpaa, Mika
通讯作者	Li, CL (通讯作者)
发表日期	2016
ISSN	1352-2310
EISSN	1873-2844
起始页码	79
结束页码	85
卷号	143
英文摘要	Light absorption characteristics of carbonaceous aerosols are key considerations in climate forcing research. However, in situ measurement data are limited, especially on the Tibetan Plateau (TP) - the Third Pole of the world. In this study, the mass absorption cross section (MAC) of elemental carbon (EC) and water soluble organic carbon (WSOC) of total suspended particles at two high-altitude stations (Lulang station and Everest station) in the Tibetan Plateau (TP) were investigated. The mean MAC(EC) values at 632 nm were 6.85 +/- 1.39 m(2) g(-1) and 6.49 +/- 2.81 m(2) g(-1) at these two stations, both of which showed little seasonal variations and were slightly higher than those of EC of uncoated particles, indicating that the enhancement of MAC(EC) by factors such as coating with organic aerosols was not significant. The mean MAC(WSOC) values at 365 nm were 0.84 +/- 0.40 m(2) g(-1) and 1.18 +/- 0.64 m(2) g(-1) at the two stations. Obvious seasonal variations of high and low MACwsoc values appeared in winter and summer, respectively, mainly reflecting photobleaching of light absorption components of WSOC caused by fluctuations in sunlight intensity. Therefore, this phenomenon might also exists in other remote areas of the world. The relative contributions of radiative forcing of WSOC to EC were 6.03 +/- 3.62% and 11.41 +/- 7.08% at these two stations, with a higher ratio in winter. As a result, both the contribution of WSOC to radiative forcing of carbonaceous aerosols and its seasonal variation need to be considered in radiative forcing related study. (C) 2016 Elsevier Ltd. All rights reserved.
关键词	SOLUBLE ORGANIC-CARBON NAM CO REGION BLACK CARBON BROWN CARBON CHEMICAL CHARACTERISTICS SOURCE APPORTIONMENT ELEMENTAL CARBON LHASA CITY PARTICLES PRECIPITATION
英文关键词	Black carbon; Water soluble organic carbon; Light absorption; The Tibetan Plateau; Seasonal variation
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000383932400008
来源期刊	ATMOSPHERIC ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258796
推荐引用方式 GB/T 7714	Li, Chaoliu,Yan, Fangping,Kang, Shichang,et al. Light absorption characteristics of carbonaceous aerosols in two remote stations of the southern fringe of the Tibetan Plateau, China[J]. 中国科学院青藏高原研究所,2016,143.
APA	Li, Chaoliu.,Yan, Fangping.,Kang, Shichang.,Chen, Pengfei.,Hu, Zhaofu.,...&Sillanpaa, Mika.(2016).Light absorption characteristics of carbonaceous aerosols in two remote stations of the southern fringe of the Tibetan Plateau, China.ATMOSPHERIC ENVIRONMENT,143.
MLA	Li, Chaoliu,et al."Light absorption characteristics of carbonaceous aerosols in two remote stations of the southern fringe of the Tibetan Plateau, China".ATMOSPHERIC ENVIRONMENT 143(2016).