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
发表期刊ACTA OCEANOLOGICA SINICA
卷号36期号:1页码:1-8
摘要The 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).
部门归属[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
关键词Sea Surface Temperature Regime Shift Southern Indian Ocean Interdecadal Variabilities Linear Trend
资助项目LTO
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16421
专题热带海洋环境国家重点实验室(LTO)
通讯作者duyan@scsio.ac.cn
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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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