IOCAS-IR  > 海洋环流与波动重点实验室
Salinity variability in the tropical Pacific during the Central-Pacific and Eastern-Pacific El Nino events
Qi, Jifeng1,2,3,4; Zhang, Linlin1,2,4; Qu, Tangdong3; Yin, Baoshu1,2,4,5; Xu, Zhenhua1,2,4; Yang, Dezhou1,2,4; Li, Delei1,2,4; Qin, Yinghao6
2019-11-01
Source PublicationJOURNAL OF MARINE SYSTEMS
ISSN0924-7963
Volume199Pages:14
Corresponding AuthorYin, Baoshu(bsyin@qdio.ac.cn)
AbstractIn this study, sea surface salinity (SSS) variability associated with two types of El Nino in the tropical Pacific is investigated using observational data and reanalysis products for the period from 1979 to 2017. The results show that the central (CP) and eastern (EP) Pacific El Nino events have distinct SSS signatures. During a CP El Nino event, negative SSS anomalies appear in the western equatorial Pacific, and positive SSS anomalies in the east. During an EP El Nino event, large negative SSS anomalies occur in the central equatorial Pacific and positive SSS anomalies in the west, with the core of negative SSS anomalies being shifted by about 25 degrees longitude eastward compared with a CP El Nino event. A composite analysis indicates that large differences in SSS anomalies between the two types of El Nino are confined to the fresh pool and Nino 3.4 regions. Surface freshwater flux and horizontal advection are two major factors modulating the SSS there, but their relative importance in the two regions is different. In the fresh pool region, the positive SSS anomalies during an EP El Nino are much larger than those during a CP El Nino event. Their differences are mainly caused by surface freshwater flux anomalies, and horizontal advection anomalies play a secondary role. In the Nino 3.4 region, SSS anomalies are positive during a CP El Nino but negative during an EP El Nino. These differences are mainly caused by horizontal advection anomalies rather than freshwater flux anomalies associated with El Nino.
KeywordSea surface salinity El Nino Tropical Pacific ORAS4 reanalysis
DOI10.1016/j.jmarsys.2019.103225
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Plan Sino-Australian Center for Healthy Coasts[2016YFE0101500] ; National Natural Science Foundation of China[41506020] ; National Natural Science Foundation of China[41776021] ; Foundation for Innovative Research Groups of NSFC[41421005] ; Strategic Pioneering Research Program of CAS[XDA19060202] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406401] ; Aoshan Sci-Tec Innovative Project of Qingdao National Laboratory for Marine Science and Technology[2016ASKJ02] ; Natural Science Foundation of Shan Dong[ZR2016DQ04]
WOS Research AreaGeology ; Marine & Freshwater Biology ; Oceanography
WOS SubjectGeosciences, Multidisciplinary ; Marine & Freshwater Biology ; Oceanography
WOS IDWOS:000486133400015
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/162745
Collection海洋环流与波动重点实验室
Corresponding AuthorYin, Baoshu
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao, Shandong, Peoples R China
3.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA USA
4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Shandong, Peoples R China
5.Univ Chinese Acad Sci, Beijing, Peoples R China
6.Natl Marine Environm Forecasting Ctr, Beijing, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qi, Jifeng,Zhang, Linlin,Qu, Tangdong,et al. Salinity variability in the tropical Pacific during the Central-Pacific and Eastern-Pacific El Nino events[J]. JOURNAL OF MARINE SYSTEMS,2019,199:14.
APA Qi, Jifeng.,Zhang, Linlin.,Qu, Tangdong.,Yin, Baoshu.,Xu, Zhenhua.,...&Qin, Yinghao.(2019).Salinity variability in the tropical Pacific during the Central-Pacific and Eastern-Pacific El Nino events.JOURNAL OF MARINE SYSTEMS,199,14.
MLA Qi, Jifeng,et al."Salinity variability in the tropical Pacific during the Central-Pacific and Eastern-Pacific El Nino events".JOURNAL OF MARINE SYSTEMS 199(2019):14.
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