SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
The regime shift in the 1960s and associated atmospheric change over the southern Indian Ocean
Wang, TY; Du, Y; Liao, XM; duyan@scsio.ac.cn
2017
Source PublicationACTA OCEANOLOGICA SINICA
Volume36Issue:1Pages:1-8
AbstractThe change of sea surface temperature (SST) in the southern Indian Ocean (SIO) during the recent six decades has been analyzed based on oceanic reanalysis and model, as well as atmospheric data. The results show that a thermal regime shift in SIO during the 1960s, which is not caught enough attentions, has been of equal magnitude to the linear warming since 1970. Empirical Orthogonal Function (EOF) analyses reveal that a thermal shift is combined with atmospheric changes such as the weakening of westerly during the period of 1960-1967. Inner dynamic connections can be defined that when the westerly winds turn weak, the anticyclonic wind circulation between westerly winds and the trade winds decreases, which further reduces the SST to a negative peak in this period. It is noted that the shifts in the 1960s are also evident for Southern Hemisphere. For example, subtropical high and the entire westerly winds belt at high latitudes both change dramatically in the 1960s. This large-scaled process maybe link to the change of southern annular mode (SAM).
Department[Wang Tianyu; Du Yan; Liao Xiaomei] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Wang Tianyu; Liao Xiaomei] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
KeywordSea Surface Temperature Regime Shift Southern Indian Ocean Interdecadal Variabilities Linear Trend
Funding ProjectLTO
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/16421
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorduyan@scsio.ac.cn
Recommended Citation
GB/T 7714
Wang, TY,Du, Y,Liao, XM,et al. The regime shift in the 1960s and associated atmospheric change over the southern Indian Ocean[J]. ACTA OCEANOLOGICA SINICA,2017,36(1):1-8.
APA Wang, TY,Du, Y,Liao, XM,&duyan@scsio.ac.cn.(2017).The regime shift in the 1960s and associated atmospheric change over the southern Indian Ocean.ACTA OCEANOLOGICA SINICA,36(1),1-8.
MLA Wang, TY,et al."The regime shift in the 1960s and associated atmospheric change over the southern Indian Ocean".ACTA OCEANOLOGICA SINICA 36.1(2017):1-8.
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