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学科主题: 地理学::自然地理学
题名: Light absorption characteristics of carbonaceous aerosols in two remote stations of the southern fringe of the Tibetan Plateau, China
作者: Li, CL (Li, Chaoliu)1, 3; Yan, FP (Yan, Fangping)2; Kang, SC (Kang, Shichang)2, 3; Chen, PF (Chen, Pengfei)2; Hu, ZF (Hu, Zhaofu)2, 4; Gao, SP (Gao, Shaopeng)1; Qu, B (Qu, Bin)5; Sillanpaa, M (Sillanpaa, Mika)5, 6
通讯作者: Li, CL
关键词: SOLUBLE ORGANIC-CARBON ; NAM CO REGION ; 5079 M A.S.L. ; BLACK CARBON ; BROWN CARBON ; CHEMICAL CHARACTERISTICS ; SOURCE APPORTIONMENT ; OPTICAL-PROPERTIES ; ELEMENTAL CARBON ; LHASA CITY
刊名: ATMOSPHERIC ENVIRONMENT
发表日期: 2016
DOI: 10.1016/j.atmosenv.2016.08.042
卷: 143, 期:0, 页:79-85
收录类别: SCI
合作性质: 国际
文章类型: Article
部门归属: 环境
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.
语种: 英语
WOS记录号: WOS:000383932400008
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7594
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Lappeenranta Univ Technol, Lab Green Chem, Sammonkatu 12, FI-50130 Mikkeli, Finland
6.Florida Int Univ, Dept Civil & Environm Engn, Miami, FL 33174 USA

Recommended Citation:
Li, CL ,Yan, FP ,Kang, SC ,et al. Light absorption characteristics of carbonaceous aerosols in two remote stations of the southern fringe of the Tibetan Plateau, China[J]. ATMOSPHERIC ENVIRONMENT,2016,143(0):79-85.
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