气候变化领域集成服务门户(CCPortal): Tree-ring delta O-18 evidence for the drought history of eastern Tianshan Mountains, northwest China since 1700 AD

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DOI	10.1002/joc.3911
	Tree-ring delta O-18 evidence for the drought history of eastern Tianshan Mountains, northwest China since 1700 AD
	Xu, Guobao; Liu, Xiaohong; Qin, Dahe; Chen, Tuo; Wang, Wenzhi; Wu, Guoju; Sun, Weizhen; An, Wenling; Zeng, Xiaomin
发表日期	2014
ISSN	0899-8418
起始页码	3336
结束页码	3347
卷号	34 期号:12
英文摘要	We developed an annual tree-ring delta O-18 chronology from Larix sibirica in the eastern Tianshan Mountains of northwestern China. Climatic response revealed that tree-ring delta O-18 was significantly positively correlated with the mean and maximum July-August temperatures, whereas the July precipitation and relative humidity were significantly negatively correlated with tree-ring delta O-18. The self-calibrating Palmer drought severity index (sc_PDSI) in July-August was significantly correlated with the tree-ring delta O-18, which reflects the comprehensive effects of the three parameters on tree-ring delta O-18 fractionation. We established a robust reconstruction of July-August sc_PDSI that accounted for 38.4% of the total variance of sc_PDSI from 1959 to 2008. The sc_PDSI reconstruction yields new insights on past drought that were not previously realized in other PDSI reconstructions (e. g. Monsoon Asia Drought Atlas) from the region. The reconstruction revealed several wet and dry periods but no trend towards a wetter climate in the eastern Tianshan Mountains during the last two decades. It also detected synergistic effects of the North Atlantic Oscillation and the El Nino-Southern Oscillation on regional moisture conditions as a result of teleconnections between tropical oceans and mid-latitude circulation patterns.
英文关键词	tree-ring delta O-18; self-calibrating PDSI; drought reconstruction; northwestern China; NAO; ENSO
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158585
作者单位	Liu, XH (corresponding author), Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Donggang West Rd 320, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Xu, Guobao,Liu, Xiaohong,Qin, Dahe,et al. Tree-ring delta O-18 evidence for the drought history of eastern Tianshan Mountains, northwest China since 1700 AD[J],2014,34(12).
APA	Xu, Guobao.,Liu, Xiaohong.,Qin, Dahe.,Chen, Tuo.,Wang, Wenzhi.,...&Zeng, Xiaomin.(2014).Tree-ring delta O-18 evidence for the drought history of eastern Tianshan Mountains, northwest China since 1700 AD.INTERNATIONAL JOURNAL OF CLIMATOLOGY,34(12).
MLA	Xu, Guobao,et al."Tree-ring delta O-18 evidence for the drought history of eastern Tianshan Mountains, northwest China since 1700 AD".INTERNATIONAL JOURNAL OF CLIMATOLOGY 34.12(2014).