气候变化领域集成服务门户(CCPortal): Black carbon (BC) in a northern Tibetan mountain: effect of Kuwait fires on glaciers

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DOI	10.5194/acp-18-13673-2018
	Black carbon (BC) in a northern Tibetan mountain: effect of Kuwait fires on glaciers
	Zhou, Jiamao; Tie, Xuexi; Xu, Baiqing; Zhao, Shuyu; Wang, Mo; Li, Guohui; Zhang, Ting; Zhao, Zhuzi; Liu, Suixin; Yang, Song; Chang, Luyu; Cao, Junji
通讯作者	Tie, XX (通讯作者)
发表日期	2018
ISSN	1680-7316
EISSN	1680-7324
起始页码	13673
结束页码	13685
卷号	18 期号:18
英文摘要	The black carbon (BC) deposition on the ice core at Muztagh Ata Mountain, northern Tibetan Plateau, was analyzed. Two sets of measurements were used in this study, which included the air samplings of BC particles during 2004-2006 and the ice core drillings of BC deposition during 1986-1994. Two numerical models were used to analyze the measured data. A global chemical transportation model (MOZART-4) was used to analyze the BC transport from the source regions, and a radiative transfer model (SNICAR) was used to study the effect of BC on snow albedo. The results show that during 1991-1992, there was a strong spike in the BC deposition at Muztagh Ata, suggesting that there was an unusual emission in the upward region during this period. This high peak of BC deposition was investigated by using the global chemical transportation model (MOZART-4). The analysis indicated that the emissions from large Kuwait fires at the end of the first Gulf War in 1991 caused this high peak of the BC concentrations and deposition (about 3-4 times higher than other years) at Muztagh Ata Mountain, suggesting that the upward BC emissions had important impacts on this remote site located on the northern Tibetan Plateau. Thus, there is a need to quantitatively estimate the effect of surrounding emissions on the BC concentrations on the northern Tibetan Plateau. In this study, a sensitivity study with four individual BC emission regions (Central Asia, Europe, the Persian Gulf, and South Asia) was conducted by using the MOZART-4 model. The result suggests that during the normal period (non-Kuwait fires), the largest effect was due to the Central Asia source (44 %) during the Indian monsoon period, while during the non-monsoon period, the largest effect was due to the South Asia source (34 %). The increase in radiative forcing increase (RFI) due to the deposition of BC on snow was estimated by using the radiative transfer model (SNICAR). The results show that under the fresh snow assumption, the estimated increase in RFI ranged from 0.2 to 2.5 W m(-2), while under the aged snow assumption, the estimated increase in RFI ranged from 0.9 to 5.7 W m(-2). During the Kuwait fires period, the RFI values increased about 2-5 times higher than in the normal period, suggesting a significant increase for the snow melting on the northern Tibetan Plateau due to this fire event. This result suggests that the variability of BC deposition at Muztagh Ata Mountain provides useful information to study the effect of the upward BC emissions on environmental and climate issues in the northern Tibetan Plateau. The radiative effect of BC deposition on the snow melting provides important information regarding the water resources in the region.
关键词	ICE CORE SEASONAL-VARIATIONS HIMALAYAN GLACIERS CHEMICAL TRACERS SPECTRAL ALBEDO GLOBAL OCEANS CLIMATE MODEL SNOW DEPOSITION TRANSPORT
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:000445784700003
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/259308
推荐引用方式 GB/T 7714	Zhou, Jiamao,Tie, Xuexi,Xu, Baiqing,et al. Black carbon (BC) in a northern Tibetan mountain: effect of Kuwait fires on glaciers[J]. 中国科学院青藏高原研究所,2018,18(18).
APA	Zhou, Jiamao.,Tie, Xuexi.,Xu, Baiqing.,Zhao, Shuyu.,Wang, Mo.,...&Cao, Junji.(2018).Black carbon (BC) in a northern Tibetan mountain: effect of Kuwait fires on glaciers.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(18).
MLA	Zhou, Jiamao,et al."Black carbon (BC) in a northern Tibetan mountain: effect of Kuwait fires on glaciers".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.18(2018).