气候变化领域集成服务门户(CCPortal): Atmospheric dust aerosols over the Eastern Pamirs: major element concentrations and composition

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DOI	10.1007/s12665-009-0446-1
	Atmospheric dust aerosols over the Eastern Pamirs: major element concentrations and composition
	Wu, Guangjian; Xu, Baiqing; Zhang, Chenglong; Gao, Shaopeng
通讯作者	Wu, GJ (通讯作者)
发表日期	2010
ISSN	1866-6280
起始页码	1227
结束页码	1237
卷号	61 期号:6
英文摘要	This study measured the major element concentrations and compositions of atmospheric dust aerosol samples collected weekly for nearly 2 years at Mt. Muztagata, a remote and high-elevation site (38A degrees 17'N, 75A degrees 01'E, 4,430 m) in the Eastern Pamirs. Inductively coupled plasma mass spectroscopy (ICP-MS) results show that on the weekly timescale, air at Muztagata contained average element Al concentrations of 842 ng m(-3) between June 2004 and December 2005, and 509 ng m(-3) between June 2005 and April 2006. The dust load over the Eastern Pamirs appears to be far lower (by more than an order of magnitude) than those in northern China. The Muztagata dust aerosols show Ca/Al ratios (similar to 0.7) and Fe/Al ratios (similar to 0.7) that differ from that in northern China. The general homogeneity exists in the major element compositions, expect Ca/Al ratios which show minor but clear seasonal variations. Element ratios vary with aerosol concentration. Results indicate that concentrations and compositions of Asian dust change significantly between different emission regions, and confirm that major element ratios can be used to efficiently characterize the dust aerosols composition at different sites in northern China.
关键词	TIBETAN PLATEAU DESERT ASIA PARTICLES REGIONS STORMS CHINA
英文关键词	Asia dust; Pamirs; Concentration; Composition; Seasonal variation
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000281668400013
来源期刊	ENVIRONMENTAL EARTH SCIENCES
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/257723
推荐引用方式 GB/T 7714	Wu, Guangjian,Xu, Baiqing,Zhang, Chenglong,et al. Atmospheric dust aerosols over the Eastern Pamirs: major element concentrations and composition[J]. 中国科学院青藏高原研究所,2010,61(6).
APA	Wu, Guangjian,Xu, Baiqing,Zhang, Chenglong,&Gao, Shaopeng.(2010).Atmospheric dust aerosols over the Eastern Pamirs: major element concentrations and composition.ENVIRONMENTAL EARTH SCIENCES,61(6).
MLA	Wu, Guangjian,et al."Atmospheric dust aerosols over the Eastern Pamirs: major element concentrations and composition".ENVIRONMENTAL EARTH SCIENCES 61.6(2010).