| 南印度洋SST在20世纪60年代的年代际转变及其相关气候变化过程 |
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| 引用本文： | 王天宇,杜岩,廖晓眉.南印度洋SST在20世纪60年代的年代际转变及其相关气候变化过程[J].海洋学报(英文版),2017,36(1):1-8. |
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| 作者姓名： | 王天宇 杜岩 廖晓眉 |
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| 作者单位： | 热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东广州 510301;中国科学院大学, 北京 100049,热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东广州 510301,热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东广州 510301;中国科学院大学, 北京 100049 |
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| 基金项目： | The National Natural Science Foundation of China for Distinguished Young Scholars and Innovative Research Groups under contract Nos 41525019 and 41521005; the Project of the State Oceanic Administration of China for Global Climate Change under contract No. GASI-IPOVAI-02; the CAS/SAFEA International Partnership Program for Creative Research Teams. |
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| 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 1960 s, 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 1960 s are also evident for Southern Hemisphere. For example, subtropical high and the entire westerly winds belt at high latitudes both change dramatically in the 1960 s. This large-scaled process maybe link to the change of southern annular mode(SAM).
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| 关 键 词： | 海表面温度 转变 南印度洋 年代际变化 线性趋势 |
| 收稿时间： | 2015/12/17 0:00:00 |
| 修稿时间： | 2016/3/21 0:00:00 |
The regime shift in the 1960s and associated atmospheric change over the southern Indian Ocean |
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| WANG Tianyu,DU Yan and LIAO Xiaomei.The regime shift in the 1960s and associated atmospheric change over the southern Indian Ocean[J].Acta Oceanologica Sinica,2017,36(1):1-8. |
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| Authors: | WANG Tianyu DU Yan and LIAO Xiaomei |
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| Institution: | 1.State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;University of Chinese Academy of Sciences, Beijing 100049, China2.State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China |
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| Abstract: | 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). |
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| Keywords: | sea surface temperature regime shift southern Indian Ocean interdecadal variabilities linear trend |
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