Ocean salinity indices of interannual modes in the tropical Pacific

doi:10.1007/s00382-021-05911-9

IOCAS-IR > 海洋环流与波动重点实验室

	Ocean salinity indices of interannual modes in the tropical Pacific
	Chi, Jianwei 1,2,3,4; Qu, Tangdong 4; Du, Yan 1,2,3; Qi, Jifeng 5; Shi, Ping 1,3
	2021-08-07
发表期刊	CLIMATE DYNAMICS
ISSN	0930-7575
页码	19
通讯作者	Du, Yan(duyan@scsio.ac.cn)
摘要	This study investigates the interannual modes of the tropical Pacific using salinity from observations, ocean reanalysis output and CMIP6 products. Here we propose two indices of sea surface salinity (SSS), a monopole mode and a dipole mode, to identify the El Nino-South Oscillation (ENSO) and its diversity, respectively. The monopole mode is primarily controlled by atmospheric forcing, namely, the enhanced precipitation that induces negative SSS anomalies across nearly the entire tropical Pacific. The dipole mode is mainly forced by oceanic dynamics, with zonal current transporting fresh water from the western fresh pool into the western-central and salty water from the subtropics into the eastern tropical Pacific. Under a global warming condition, an increase in the monopole and dipole mode variance indicates an increase in both the central and eastern Pacific El Nino variability. The increase in central Pacific El Nino variability is largely due to enhanced vertical stratification during global warming in the upper layer, with intensified zonal advection. An eastern Pacific El Nino-like warming pattern contributes to the increase in eastern Pacific El Nino, with enhanced precipitation over the central-eastern tropical Pacific.
关键词	Sea surface salinity El Nino-South Oscillation (ENSO) Central and eastern Pacific El Nino Climate change CMIP6
DOI	10.1007/s00382-021-05911-9
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42,006,028] ; National Natural Science Foundation of China[41,830,538] ; National Natural Science Foundation of China[42,090,042] ; Chinese Academy of Sciences[XDB42010305] ; Chinese Academy of Sciences[XDA15020901] ; Chinese Academy of Sciences[133244KYSB20190031] ; National Basic Research Program of China[2018YFA0605704] ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0303] ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[2019BT02H594] ; Open Fund of the Key Laboratory of Ocean Circulation and Waves[KLOCW2004] ; State Key Laboratory of Tropical Oceanography (South China Sea Institute of Oceanology Chinese Academy of Sciences)[LTOZZ2101] ; China Scholarship Council
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000682633800002
出版者	SPRINGER
引用统计	被引频次：3[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/337002/175963
专题	海洋环流与波动重点实验室
通讯作者	Du, Yan
作者单位	1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, 164 West Xingang Rd, Guangzhou 510301, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China 4.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90095 USA 5.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Chi, Jianwei,Qu, Tangdong,Du, Yan,et al. Ocean salinity indices of interannual modes in the tropical Pacific[J]. CLIMATE DYNAMICS,2021:19.
APA	Chi, Jianwei,Qu, Tangdong,Du, Yan,Qi, Jifeng,&Shi, Ping.(2021).Ocean salinity indices of interannual modes in the tropical Pacific.CLIMATE DYNAMICS,19.
MLA	Chi, Jianwei,et al."Ocean salinity indices of interannual modes in the tropical Pacific".CLIMATE DYNAMICS (2021):19.

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