IOCAS-IR  > 海洋环流与波动重点实验室
Ocean Salinity Aspects of the Ningaloo Nino
Guo, Yaru1,2; Li, Yuanlong1,3,4,5; Wang, Fan1,3,4; Wei, Yuntao6
2021-08-01
Source PublicationJOURNAL OF CLIMATE
ISSN0894-8755
Volume34Issue:15Pages:6141-6161
Corresponding AuthorLi, Yuanlong(liyuanlong@qdio.ac.cn)
AbstractNingaloo Nino-the interannually occurring warming episode in the southeast Indian Ocean (SEIO)-has strong signatures in ocean temperature and circulation and exerts profound impacts on regional climate and marine biosystems. Analysis of observational data and eddy-resolving regional ocean model simulations reveals that the Ningaloo Nino/Nina can also induce pronounced variability in ocean salinity, causing large-scale sea surface salinity (SSS) freshening of 0.15-0.20 psu in the SEIO during its warm phase. Model experiments are performed to understand the underlying processes. This SSS freshening is mutually caused by the increased local precipitation (similar to 68%) and enhanced freshwater transport of the Indonesian Throughflow (ITF; similar to 28%) during Ningaloo Nino events. The effects of other processes, such as local winds and evaporation, are secondary (similar to 18%). The ITF enhances the southward freshwater advection near the eastern boundary, which is critical in causing the strong freshening (>0.20 psu) near the Western Australian coast. Owing to the strong modulation effect of the ITF, SSS near the coast bears a higher correlation with El Nino-Southern Oscillation (0.57, 0.77, and 0.70 with the Nino-3, Nino-4, and Nino-3.4 indices, respectively) than sea surface temperature (-0.27, -0.42, and -0.35) during 1993-2016. Yet, an idealized model experiment with artificial damping for salinity anomaly indicates that ocean salinity has limited impact on ocean near-surface stratification and thus minimal feedback effect on the warming of Ningaloo Nino.
KeywordIndian Ocean Air-sea interaction Salinity Ocean models Regional models Interannual variability
DOI10.1175/JCLI-D-20-0890.1
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Key R&D Program of China[2019YFA0606702] ; National Natural Science Foundation of China (NSFC)[41776001] ; National Natural Science Foundation of China (NSFC)[41806001] ; Shandong Provincial Natural Science Foundation[ZR2020JQ17] ; Key Deployment Project of CAS Centre for Ocean MegaScience[COMS2019Q07]
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000672642500008
PublisherAMER METEOROLOGICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/175920
Collection海洋环流与波动重点实验室
Corresponding AuthorLi, Yuanlong
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Peoples R China
5.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China
6.Univ Utah, Dept Atmospher Sci, Salt Lake City, UT USA
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Guo, Yaru,Li, Yuanlong,Wang, Fan,et al. Ocean Salinity Aspects of the Ningaloo Nino[J]. JOURNAL OF CLIMATE,2021,34(15):6141-6161.
APA Guo, Yaru,Li, Yuanlong,Wang, Fan,&Wei, Yuntao.(2021).Ocean Salinity Aspects of the Ningaloo Nino.JOURNAL OF CLIMATE,34(15),6141-6161.
MLA Guo, Yaru,et al."Ocean Salinity Aspects of the Ningaloo Nino".JOURNAL OF CLIMATE 34.15(2021):6141-6161.
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