气候变化领域集成服务门户(CCPortal): Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing

CCPortal

DOI	10.5194/acp-15-1191-2015
	Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing
	Wang, M.; Xu, B.; Cao, J.; Tie, X.; Wang, H.; Zhang, R.; Qian, Y.; Rasch, P. J.; Zhao, S.; Wu, G.; Zhao, H.; Joswiak, D. R.; Li, J.; Xie, Y.
通讯作者	Wang, M (通讯作者)
发表日期	2015
ISSN	1680-7316
EISSN	1680-7324
起始页码	1191
结束页码	1204
卷号	15 期号:3
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.
关键词	ATMOSPHERIC BROWN CLOUDS BLACK-CARBON LIGHT-ABSORPTION ORGANIC-CARBON OPTICAL-PROPERTIES SPECTRAL ALBEDO SULFUR-DIOXIDE SOUTH-ASIA SNOW COVER ENERGY USE
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:000349799500004
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
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/258567
推荐引用方式 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]. 中国科学院青藏高原研究所,2015,15(3).
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).
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).