Interannual Salinity Variability Associated With the Central Pacific and Eastern Pacific El Ninos in the Tropical Pacific

doi:10.1029/2020JC016090

IOCAS-IR > 海洋环流与波动重点实验室

	Interannual Salinity Variability Associated With the Central Pacific and Eastern Pacific El Ninos in the Tropical Pacific
	Zhi, Hai 1; Zhang, Rong-Hua2,3,4,5 ; Lin, Pengfei 6; Yu, Peng 7; Zhou, Guanghui 2,3; Shi, Shiwei 1
	2020-10-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
卷号	125 期号:10 页码:19
通讯作者	Zhang, Rong-Hua(rzhang@qdio.ac.cn)
摘要	Ocean reanalysis products and observations are used to analyze the differences between the two types of El Nino in terms of interannual salinity variability in the tropical Pacific; a budget analysis for mixed layer (ML) salinity (MLS) is performed in the region. The center of negative MLS anomalies associated with the central Pacific (CP) El Nino tends to move further westward in winter along the equator, as compared with the eastern Pacific (EP) El Nino. The oscillation period with the EP El Nino is found to be approximately 10 years, longer than that with the CP El Nino (approximately 6-8 years). Our budget analyses further reveal that surface advection, surface forcing, and subsurface effect are the three main contributors to ML tendency of interannual salinity anomalies, which are regionally dependent. In the eastern edge of the warm pool (WP), surface advection makes a larger contribution (about 40-60%) to the MLS budget, and subsurface effect (about 20%) and surface forcing (about 20-40%) are relatively smaller. The subsurface effects on the MLS tendency tend to compensate for the imbalance induced by the surface forcing and advection: A weakened MLS tendency occurs with the CP El Nino, whereas an enhanced MLS tendency occurs with the EP El Nino, respectively. The MLS tendency leads the Nino3.4 SST by 8-10 months for the EP El Nino, whereas there is no such apparent lead/lag relationship for the CP El Nino. It is demonstrated that the relationships between the interannual sea surface temperature (SST) variability and MLS budget terms can be a clear indicator to distinguish the two types of El Nino.
关键词	the eastern and central Pacific El Ninos mixed layer salinity variability salinity budget the relationship between SST and MLS
DOI	10.1029/2020JC016090
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFC1404102 [2017YFC1404100]] ; National Natural Science Foundation of China[41690122] ; National Natural Science Foundation of China[41690120] ; National Natural Science Foundation of China[41475101] ; NSFC Innovative Group Grant[41421005] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB 40000000] ; Strategic Priority Research Program of Chinese Academy of Sciences[42000000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA 19060102] ; Taishan Scholarship
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000612077200055
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：13[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/337002/170079
专题	海洋环流与波动重点实验室
通讯作者	Zhang, Rong-Hua
作者单位	1.Nanjing Univ Informat Sci & Technol, Coll Atmospher Sci, Nanjing, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Peoples R China 5.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China 6.Chinese Acad Sci, Inst Atmospher Phys IAP, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China 7.Univ Maryland, Cooperat Inst Climate & Satellites CICS, College Pk, MD 20742 USA
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	Zhi, Hai,Zhang, Rong-Hua,Lin, Pengfei,et al. Interannual Salinity Variability Associated With the Central Pacific and Eastern Pacific El Ninos in the Tropical Pacific[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2020,125(10):19.
APA	Zhi, Hai,Zhang, Rong-Hua,Lin, Pengfei,Yu, Peng,Zhou, Guanghui,&Shi, Shiwei.(2020).Interannual Salinity Variability Associated With the Central Pacific and Eastern Pacific El Ninos in the Tropical Pacific.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(10),19.
MLA	Zhi, Hai,et al."Interannual Salinity Variability Associated With the Central Pacific and Eastern Pacific El Ninos in the Tropical Pacific".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.10(2020):19.

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