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Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing
Wang, M.1,2; Xu, B.1; Cao, J.3; Tie, X.3,4; Wang, H.2; Zhang, R.2,5; Qian, Y.2; Rasch, P. J.2; Zhao, S.3; Wu, G.1; Zhao, H.1; Joswiak, D. R.1; Li, J.1; Xie, Y.1
2015
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
Volume15Issue:3Pages:1191-1204
SubtypeArticle
Abstract

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.

WOS HeadingsScience & Technology ; Physical Sciences
DOI10.5194/acp-15-1191-2015
WOS KeywordLight-absorbing Impurities ; Atmospheric Brown Clouds ; Black-carbon ; Organic-carbon ; Arctic Snow ; Hydrological Cycle ; Optical-properties ; Spectral Albedo ; Sulfur-dioxide ; Rural India
Indexed BySCI
Language英语
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000349799500004
PublisherCOPERNICUS GESELLSCHAFT MBH
Citation statistics
Cited Times:41[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9394
Collection粉尘与环境研究室
Corresponding AuthorWang, M.
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.PNNL, Atmospher Sci & Global Change Div, Richland, WA 99352 USA
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Beijing 100085, Peoples R China
4.Natl Ctr Atmospher Res, Boulder, CO 80303 USA
5.Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou 730000, Gansu, Peoples R China
Recommended Citation
GB/T 7714
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.
APA Wang, M..,Xu, B..,Cao, J..,Tie, X..,Wang, H..,...&Xie, Y..(2015).Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing.ATMOSPHERIC CHEMISTRY AND PHYSICS,15(3),1191-1204.
MLA Wang, M.,et al."Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing".ATMOSPHERIC CHEMISTRY AND PHYSICS 15.3(2015):1191-1204.
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