气候变化领域集成服务门户(CCPortal): A High-Resolution Record of Atmospheric Dust Composition and Variability since AD 1650 from a Mount Everest Ice Core

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DOI	10.1175/2009JCLI2518.1
	A High-Resolution Record of Atmospheric Dust Composition and Variability since AD 1650 from a Mount Everest Ice Core
	Kaspari, S.; Mayewski, P. A.; Handley, M.; Kang, S.; Hou, S.; Sneed, S.; Maasch, K.; Qin, D.
通讯作者	Kaspari, S (通讯作者)
发表日期	2009
ISSN	0894-8755
EISSN	1520-0442
起始页码	3910
结束页码	3925
卷号	22 期号:14
英文摘要	A Mount Everest ice core analyzed at high resolution for major and trace elements (Sr, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, Lu, Bi, U, Tl, Al, S, Ca, Ti, V, Cr, Mn, Fe, Co) and spanning the period A. D. 1650- 2002 is used to investigate the sources of and variations in atmospheric dust through time. The chemical composition of dust varies seasonally, and peak dust concentrations occur during the winter-spring months. Significant correlations between the Everest dust record and dust observations at stations suggest that the Everest record is representative of regional variations in atmospheric dust loading. Back-trajectory analysis in addition to a significant correlation of Everest dust concentrations and the Total Ozone Mapping Spectrometer (TOMS) aerosol index indicates that the dominant winter sources of dust are the Arabian Peninsula, Thar Desert, and northern Sahara. Factors that contribute to dust generation at the surface include soil moisture and temperature, and the long-range transport of dust aerosols appears to be sensitive to the strength of 500-mb zonal winds. There are periods of high dust concentration throughout the 350-yr Mount Everest dust record; however, there is an increase in these periods since the early 1800s. The record was examined for recent increases in dust emissions associated with anthropogenic activities, but no recent dust variations can be conclusively attributed to anthropogenic inputs of dust.
关键词	TIBETAN PLATEAU DESERT DUST MT. EVEREST MONSOON PRECIPITATION HIMALAYAS FREQUENCY STORMS
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000268292300003
来源期刊	JOURNAL OF CLIMATE
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/257685
推荐引用方式 GB/T 7714	Kaspari, S.,Mayewski, P. A.,Handley, M.,et al. A High-Resolution Record of Atmospheric Dust Composition and Variability since AD 1650 from a Mount Everest Ice Core[J]. 中国科学院青藏高原研究所,2009,22(14).
APA	Kaspari, S..,Mayewski, P. A..,Handley, M..,Kang, S..,Hou, S..,...&Qin, D..(2009).A High-Resolution Record of Atmospheric Dust Composition and Variability since AD 1650 from a Mount Everest Ice Core.JOURNAL OF CLIMATE,22(14).
MLA	Kaspari, S.,et al."A High-Resolution Record of Atmospheric Dust Composition and Variability since AD 1650 from a Mount Everest Ice Core".JOURNAL OF CLIMATE 22.14(2009).