Impact of the central-Pacific ENSO on the Tibetan Plateau precipitation in boreal spring
编号:504 稿件编号:738 访问权限:仅限参会人 更新:2025-03-31 10:15:08 浏览:87次 张贴报告

报告开始:2025年04月18日 08:44 (Asia/Shanghai)

报告时间:1min

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摘要
The importance of spring Tibetan Plateau (TP) precipitation is increasingly recognized. This study investigated the primary spatiotemporal features of spring Tibetan Plateau (TP) precipitation and revealed its pronounced impacts from El Niño–Southern Oscillation (ENSO). The spring TP precipitation anomalies are majorly featured by a west–east spatial pattern with interannual variations correlated with the spring central-Pacific (CP) ENSO. This west–east precipitation pattern leads to more precipitation in the western TP and less in the eastern TP under the spring CP El Niño, which is reversed under the spring CP La Niña. The ENSO-related Walker circulation variations and induced Indian Ocean warming that further excite anomalous zonal–vertical and meridional–vertical circulations south of TP are crucial to the spring TP precipitation through configuring the opposite anomalies of vertical motions and moisture convergence over western to eastern TP. The CP ENSO could be a potential precursor to the spring TP precipitation owing to its relatively long predictability and a summer persistence barrier.
关键字
ENSO,Tibetan Plateau
报告人
王润
副研究员 中国气象科学研究院

稿件作者
王润 中国气象科学研究院
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