Impact of the subtropical South Pacific on the decadal change in El Ni?o zonal propagation

doi:10.1007/s00382-024-07131-3

IOCAS-IR > 海洋环流与波动重点实验室

	Impact of the subtropical South Pacific on the decadal change in El Ni?o zonal propagation
	Zheng, Jian1,2,3 ; Yang, Yuxing 1,2; Wang, Faming 1,2,3
	2024-02-27
发表期刊	CLIMATE DYNAMICS
ISSN	0930-7575
页码	13
通讯作者	Zheng, Jian([email protected])
摘要	The propagation of sea surface temperature (SST) anomalies along the equatorial Pacific Ocean during El Nino shifted around the late 1970s, previously propagating westward from the eastern Pacific and shifting to eastward propagation from the central Pacific. This shift has been attributed to decadal changes in the mean state of the equatorial Pacific. This study examined the influence of the subtropical South Pacific on the decadal variation in El Nino zonal propagation through the utilization of observational data and extensive simulations with coupled climate models. We showed that El Nino induced by the positive South Pacific Subtropical Dipole mode (pSPSD) started in the eastern Pacific and developed westward. The mean trade winds in the southeastern Pacific were stronger before the late 1970s, leading to a stronger pSPSD through enhanced wind-evaporation-SST feedback. Then, the pSPSD could trigger westward propagating El Nino. Contrarily, weaker pSPSD did not induce El Nino events after the late 1970s. El Nino initiated from other processes and propagated eastward. Our study reveals the modulation of the subtropical South Pacific on the decadal shift of El Nino propagation.
关键词	El Nino Zonal propagation Decadal change Subtropical South Pacific
DOI	10.1007/s00382-024-07131-3
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Shandong Province
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001172747900001
出版者	SPRINGER
WOS关键词	SEASONAL FOOTPRINTING MECHANISM ; SEA-SURFACE TEMPERATURE ; ATMOSPHERIC VARIABILITY ; MERIDIONAL MODES ; COLD-TONGUE ; NINO ONSET ; CIRCULATION ; WARM ; ITCZ ; ANOMALIES
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/185586
专题	海洋环流与波动重点实验室
通讯作者	Zheng, Jian
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Laoshan Lab, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China
第一作者单位	海洋环流与波动重点实验室
通讯作者单位	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Zheng, Jian,Yang, Yuxing,Wang, Faming. Impact of the subtropical South Pacific on the decadal change in El Ni?o zonal propagation[J]. CLIMATE DYNAMICS,2024:13.
APA	Zheng, Jian,Yang, Yuxing,&Wang, Faming.(2024).Impact of the subtropical South Pacific on the decadal change in El Ni?o zonal propagation.CLIMATE DYNAMICS,13.
MLA	Zheng, Jian,et al."Impact of the subtropical South Pacific on the decadal change in El Ni?o zonal propagation".CLIMATE DYNAMICS (2024):13.