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	Variability of summer precipitation over Eastern China during the last millennium
	Xu Y.; Xu Y.
	2009
关键词	decadal climate variability land-cover change north pacific interdecadal variations past millennium asian monsoon system model rainfall oscillation circulation
英文摘要	We use measurements of recent decades, 1500-yr proxy data, and millennium model simulations with a variety of climate facings to study the temporal and spatial variability of summer precipitation over eastern China. Spectral analysis of the proxy data using multi-taper method reveals three statistically significant bidecadal (15-35-yr), pendadecadal (40-60-yr), and centennial (65-170-yr) oscillation bands. The results of wavelet filtering show that the amplitudes of these bands vary substantially through time depending on the temperature regimes. Weak centennial oscillation and strong pentadecadal oscillation occur in warm conditions, whereas both the centennial and pentadecadal oscillations are strong in cold conditions. A model/data intercomparison suggests that pentadecadal and bidecadal oscillations could be associated with internal variability of the climate system. It is also found that the increased frequency of drought-in-north/flood-in-south spatial pattern over eastern China during the last two decades is unusual in the past five centuries.
出处	Climate of the Past
卷	5
期	2
页	129-141
收录类别	SCI
语种	英语
ISSN号	1814-9324
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/23111]
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	Xu Y.,Xu Y.. Variability of summer precipitation over Eastern China during the last millennium. 2009.

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