Combined effects of the Pacific Decadal Oscillation and El Nino-Southern Oscillation on Global Land Dry-Wet Changes

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Combined effects of the Pacific Decadal Oscillation and El Nino-Southern Oscillation on Global Land Dry-Wet Changes
	Wang, SS ; Huang, JP ; He, YL ; Guan, YP
刊名	SCIENTIFIC REPORTS
	2014
卷号	4 页码:-6651
ISSN号	2045-2322
通讯作者	hjp@lzu.edu.cn
中文摘要	The effects of natural variability, especially El Nino-Southern Oscillation (ENSO) effects, have been the focus of several recent studies on the change of drought patterns with climate change. The interannual relationship between ENSO and the global climate is not stationary and can be modulated by the Pacific Decadal Oscillation (PDO). However, the global land distribution of the dry-wet changes associated with the combination of ENSO and the PDO remains unclear. In the present study, this is investigated using a revised Palmer Drought Severity Index dataset (sc_PDSI_pm). We find that the effect of ENSO on dry-wet changes varies with the PDO phase. When in phase with the PDO, ENSO-induced dry-wet changes are magnified with respect to the canonical pattern. When out of phase, these dry-wet variations weaken or even disappear. This remarkable contrast in ENSO's influence between the two phases of the PDO highlights exciting new avenues for obtaining improved global climate predictions. In recent decades, the PDO has turned negative with more La Nina events, implying more rain and flooding over land. La Nina-induced wet areas become wetter and the dry areas become drier and smaller due to the effects of the cold PDO phase.
学科主题	Science & Technology - Other Topics
收录类别	SCI
资助信息	National Basic Research Program of China [2012CB955301, 2013CB956201]
原文出处	NATURE PUBLISHING GROUP
WOS记录号	WOS:000343090400001
公开日期	2014-12-11
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10502]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Wang, SS,Huang, JP,He, YL,et al. Combined effects of the Pacific Decadal Oscillation and El Nino-Southern Oscillation on Global Land Dry-Wet Changes[J]. SCIENTIFIC REPORTS,2014,4:-6651.
APA	Wang, SS,Huang, JP,He, YL,&Guan, YP.(2014).Combined effects of the Pacific Decadal Oscillation and El Nino-Southern Oscillation on Global Land Dry-Wet Changes.SCIENTIFIC REPORTS,4,-6651.
MLA	Wang, SS,et al."Combined effects of the Pacific Decadal Oscillation and El Nino-Southern Oscillation on Global Land Dry-Wet Changes".SCIENTIFIC REPORTS 4(2014):-6651.