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题名: Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing
作者: Wang, M; Xu, B; Cao, J; Tie, X; Wang, H; Zhang, R; Qian, Y; Rasch, PJ; Zhao, S; Wu, G; Zhao, H; Joswiak, DR; Li, J; Xie, Y
收录类别: SCIE
出版日期: 2015
刊名: ATMOSPHERIC CHEMISTRY AND PHYSICS
卷号: 15, 期号:3, 页码:1191-1204
出版者: COPERNICUS GESELLSCHAFT MBH
出版地: GOTTINGEN
英文摘要: High temporal resolution measurements of black carbon (BC) and organic carbon (OC) covering the time period of 1956-2006 in an ice core over the southeastern Tibetan Plateau show a distinct seasonal dependence of BC and OC with higher respective concentrations but a lower OC / BC ratio in the non-monsoon season than during the summer monsoon. We use a global aerosol-climate model, in which BC emitted from different source regions can be explicitly tracked, to quantify BC source-receptor relationships between four Asian source regions and the southeastern Tibetan Plateau as a receptor. The model results show that South Asia has the largest contribution to the presentday (1996-2005) mean BC deposition at the ice-core drilling site during the non-monsoon season (October to May) (81 %) and all year round (74 %), followed by East Asia (14% to the non-monsoon mean and 21% to the annual mean). The ice-core record also indicates stable and relatively low BC and OC deposition fluxes from the late 1950s to 1980, followed by an overall increase to recent years. This trend is consistent with the BC and OC emission inventories and the fuel consumption of South Asia (as the primary contributor to annual mean BC deposition). Moreover, the increasing trend of the OC / BC ratio since the early 1990s indicates a growing contribution of coal combustion and/or biomass burning to the emissions. The estimated radiative forcing induced by BC and OC impurities in snow has increased since 1980, suggesting an increasing potential influence of carbonaceous aerosols on the Tibetan glacier melting and the availability of water resources in the surrounding regions. Our study indicates that more attention to OC is merited because of its non-negligible light absorption and the recent rapid increases evident in the ice-core record.
作者部门: [Wang, M. ; Xu, B. ; Wu, G. ; Zhao, H. ; Joswiak, D. R. ; Li, J. ; Xie, Y.] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China ; [Wang, M. ; Wang, H. ; Zhang, R. ; Qian, Y. ; Rasch, P. J.] PNNL, Atmospher Sci & Global Change Div, Richland, WA 99352 USA ; [Cao, J. ; Tie, X. ; Zhao, S.] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Beijing 100085, Peoples R China ; [Tie, X.] Natl Ctr Atmospher Res, Boulder, CO 80303 USA ; [Zhang, R.] Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou 730000, Gansu, Peoples R China
通讯作者: Wang, M (reprint author), Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China.
学科分类: Meteorology & Atmospheric Sciences
文章类型: Article
所属项目编号: China National Funds for Distinguished Young Scientists ; National Natural Science Foundation of China [41125003, 41101063, 2009CB723901] ; US Department of Energy (DOE), Office of Science, Biological and Environmental Research as part of the Earth System Modeling program ; China Scholarship Fund ; DOE by Battelle Memorial Institute [DE-AC05-76RLO1830] ; National Science Foundation
所属项目名称: 国家自然科学基金项目 ; 国家杰出青年科学基金项目 ; 国家留学基金委项目 ; 美国国家科学基金会项目 ; 美国能源部项目
项目资助者: NSFC ; CSC ; US NSF ; US DOE
语种: 英语
DOI: 10.5194/acp-15-1191-2015
ISSN号: 1680-7316
WOS记录号: WOS:000349799500004
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/119471
Appears in Collections:大气科学学院_期刊论文

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Recommended Citation:
Wang, M,Xu, B,Cao, J,et al. Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2015,15(3):1191-1204.
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