An idealized study of the impact of extratropical climate change on El Nino-Southern Oscillation

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)

	An idealized study of the impact of extratropical climate change on El Nino-Southern Oscillation
	Zhang, Q ; Yang, HJ ; Zhong, YF ; Wang, DX
刊名	CLIMATE DYNAMICS
	2005
卷号	25 期号:40732 页码:869-880
ISSN号	0930-7575
通讯作者	hjyang@pku.edu.cn
中文摘要	Extratropical impacts on the tropical El Nino-Southern Oscillation (ENSO) are studied in a coupled climate model. Idealized experiments show that the remote impact of the extratropics on the equatorial thermocline through oceanic tunnel can substantially modulate the ENSO in both magnitude and frequency. First of all, an extratropical warming can be conveyed to the equator by the mean subduction current, resulting in a warming of the equatorial thermocline. Second, the extratropical warming can weaken the Hadley cells, which in turn slow down the mean shallow meridional overturning circulations in the upper Pacific, reducing the equatorward cold water supply and the equatorial upwelling. These oceanic dynamic processes would weaken the stratification of the equatorial thermocline and retard a buildup (purge) of excess heat content along the equator, and finally result in a weaker and longer ENSO cycle. This study highlights a nonlocal mechanism in which ENSO behavior is related to the extratropical climate conditions.
学科主题	Meteorology & Atmospheric Sciences
收录类别	SCI
WOS记录号	WOS:000233240800012
公开日期	2011-07-03
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/5689]
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	Zhang, Q,Yang, HJ,Zhong, YF,et al. An idealized study of the impact of extratropical climate change on El Nino-Southern Oscillation[J]. CLIMATE DYNAMICS,2005,25(40732):869-880.
APA	Zhang, Q,Yang, HJ,Zhong, YF,&Wang, DX.(2005).An idealized study of the impact of extratropical climate change on El Nino-Southern Oscillation.CLIMATE DYNAMICS,25(40732),869-880.
MLA	Zhang, Q,et al."An idealized study of the impact of extratropical climate change on El Nino-Southern Oscillation".CLIMATE DYNAMICS 25.40732(2005):869-880.