干旱区生态环境知识资源中心(Arid): An Integrated Analysis of Dry-Wet Variability in Western China for the Last 4-5 Centuries

Arid

	An Integrated Analysis of Dry-Wet Variability in Western China for the Last 4-5 Centuries
	QIAN Weihong; LIN Xiang
来源期刊	Advances in Atmospheric Sciences
ISSN	0256-1530
出版年	2009
卷号	26 期号:5 页码:951-961
英文摘要	The dry-wet variability in western China and its spatiotemporal structure during the last 4-5 centuries was examined using 24 climate proxies from sediments,ice cores,historical documents,and tree rings.Spatial patterns and temporal evolutions of dryness and wetness were not only extracted from the proxy data using rotated empirical orthogonal function (REOF) analysis for the last 4 centuries,but also for instrumental data in the last 40 years.The leading five REOF modes indicate that 5 dry-wet variation centers exist in western China.Moreover,long-term variability in dryness and wetness is seen on long (centennial) to short (inter-decadal) timescales.An out-of-phase relationship for the inter-decadal variation was observed between the Hetao-upper Yangtze River region and north Xinjiang,indicating influences on dry-wet variations of the East Asian summer monsoon and the westerly winds over the two regions,respectively.A particularly long dry spell was found in the central Tibetan Plateau in the 19th century.A predominance of wet decades in the last 4 centuries was found in the arid and Hetao regions.Three regional dry-wet series with annual resolution in north Xinjiang,the upper Yellow River valley,and the Hetao area were constructed for analyses of the last 500 years.Dry-wet oscillations with periodicities of 16,50,and 150 years in north Xinjiang,50 years in the upper Yellow River valley,and 70-80 years in the Hetao region were identified by wavelet analysis.In general,these periods correspond to large-scale oscillations found in the climate system,are mainly related to ocean-atmosphere interaction.
英文关键词	dry-wet variability natural proxy historical documents western China
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:3649882
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335010
作者单位	QIAN Weihong, Monsoon and Environment Research Group,School of Physics,Peking University, Beijing 100871, China.; LIN Xiang, Monsoon and Environment Research Group,School of Physics,Peking University, Beijing 100871, China.
推荐引用方式 GB/T 7714	QIAN Weihong,LIN Xiang. An Integrated Analysis of Dry-Wet Variability in Western China for the Last 4-5 Centuries[J],2009,26(5):951-961.
APA	QIAN Weihong,&LIN Xiang.(2009).An Integrated Analysis of Dry-Wet Variability in Western China for the Last 4-5 Centuries.Advances in Atmospheric Sciences,26(5),951-961.
MLA	QIAN Weihong,et al."An Integrated Analysis of Dry-Wet Variability in Western China for the Last 4-5 Centuries".Advances in Atmospheric Sciences 26.5(2009):951-961.