A Numerical Simulation of the Impact of Tropical Western Pacific SST Anomalies on the Decadal Shift of the Meiyu Belt |
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Authors: | Dong Si Yihui Ding |
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Institution: | 1. National Climate Center, Beijing, 100081, China
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Abstract: | The sea surface temperature (SST) of the tropical western Pacific Ocean (TWPO) showed a pronounced warming in the late 1990s. Using numerical experiments of a regional climate model (RegCM), we analyzed the impact of this warming on rainfall over the Yangtze-Huaihe River valley of China during the Meiyu period (June–July). The model results revealed that the observed decadal changes in Meiyu rainfall since the late 1990s can be reproduced by a control experiment forced by the observed SST. Additionally, the sensitivity experiments suggested that the warming trend in the TWPO played a substantial role in the northward shift of the Meiyu belt in the late 1990s. |
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Keywords: | decadal shift Meiyu belt SST regional climate model numerical experiment |
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