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DOI	10.1007/s10874-011-9202-5
	Measuring and modeling black carbon (BC) contamination in the SE Tibetan Plateau
	Cao, Junji; Tie, Xuexi; Xu, Baiqing; Zhao, Zhuzi; Zhu, Chongshu; Li, Guohui; Liu, Suixin
通讯作者	Tie, XX (通讯作者)
发表日期	2010
ISSN	0167-7764
EISSN	1573-0662
起始页码	45
结束页码	60
卷号	67 期号:1
英文摘要	Black carbon (BC) concentrations were measured in the southeast (SE) Tibetan Plateau along the valley of the Yarlung Tsangpo River during winter (between November, 2008 and January, 2009). The measured mean concentration (0.75 mu g m(-3)) is significantly higher than the concentrations (0.004-0.34 mu g m(-3)) measured in background and remote regions of the globe, indicating that Tibetan glaciers are contaminated by BC particles in the Plateau. Because BC particles play important roles for the climate in the Tibetan Plateau, the sources and causes of the BC contamination need to be understood and investigated. In this study, a mesocale dynamical model (WRF) with BC particle modules is applied for analyzing the measurement. The analysis suggests that the major sources for the contamination in the SE Plateau were mainly from the BC emissions in eastern Indian and Bangladesh. Because of the west prevailing winds, the heavy emissions in China had no significant effects on the SE Plateau in winter. Usually, the high altitude of the Himalayas acts a physical wall, inhibiting the transport of BC particles across the mountains to the plateau. This study, however, finds that the Yarlung Tsangpo River valley causes a 'leaking wall', whereby under certain meteorological conditions, BC particles are being transported up onto the glacier. This too causes variability of BC concentrations (ranging from 0.3 to 1.5 mu g m(-3)) in a time scale of a few days. The analysis of the variability suggests that the leaking wall effect cannot occur when the prevailing winds were northwest winds, during which the BC transport along the valley of the Yarlung Tsangpo River was obstructed. As a result, large variability of BC concentration was observed due to the change of prevailing wind directions.
关键词	AEROSOL CLIMATE SNOW INDIA CITY AETHALOMETER INSTRUMENT ABSORPTION PARTICLES EMISSIONS
英文关键词	Elemental carbon; Leaking wall; Himalayas
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:000297059800003
来源期刊	JOURNAL OF ATMOSPHERIC CHEMISTRY
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/257786
推荐引用方式 GB/T 7714	Cao, Junji,Tie, Xuexi,Xu, Baiqing,et al. Measuring and modeling black carbon (BC) contamination in the SE Tibetan Plateau[J]. 中国科学院青藏高原研究所,2010,67(1).
APA	Cao, Junji.,Tie, Xuexi.,Xu, Baiqing.,Zhao, Zhuzi.,Zhu, Chongshu.,...&Liu, Suixin.(2010).Measuring and modeling black carbon (BC) contamination in the SE Tibetan Plateau.JOURNAL OF ATMOSPHERIC CHEMISTRY,67(1).
MLA	Cao, Junji,et al."Measuring and modeling black carbon (BC) contamination in the SE Tibetan Plateau".JOURNAL OF ATMOSPHERIC CHEMISTRY 67.1(2010).