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	A dendroclimatic analysis of regional moisture variation in the northeastern Tibetan Plateau during the past 150 years
	Zhang Y.; Zhang Y.
	2013
关键词	Drought Tree rings Principal component analysis The northeastern part of the Tibetan Plateau asian summer monsoon tree growth anomalies qilian mountains northwestern china precipitation variation drought reconstruction interannual variation climate variability ring record el-nino
英文摘要	As a transitional zone between westerlies and the Asian Monsoon system, the northeastern part of the Tibetan Plateau (NETP) is highly sensitive to climate change. The record of historical regional moisture variation in the NETP is essential for understanding climatic variation and its relationship with different climate systems in this area. Using principal component analysis, a time series was extracted from sixteen moisture-sensitive tree-ring series to investigate the regional moisture variation in the NETP over the past 150 years. We find that the first principal component (PC1) represents 46.9 % of the total variance, reflecting a common growth response to the climate factor. A spatial correlation analysis of PC1 with the gridded meteorological data demonstrated that the precipitation in May-June was the major factor in controlling tree-ring growth. Further analysis indicated that the westerlies had a sustained influence on rainfall in the NETP over the past 150 years. In addition, the rainfall in the NETP may be closely associated with the East Asian Monsoon (EAM). Severe drought years commonly correspond to years of a negative phase of the North Atlantic Oscillation and stronger EAM years over the past 150 years.
出处	Trees-Structure and Function
卷	27
期	2
页	455-463
收录类别	SCI
语种	英语
ISSN号	0931-1890
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/30024]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Zhang Y.,Zhang Y.. A dendroclimatic analysis of regional moisture variation in the northeastern Tibetan Plateau during the past 150 years. 2013.

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