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Interdecadal changes in the western Siberian summer mean and extreme rainfall during 1982-2021

Yali Zhu Fangwu Song Dong Guo

大气和海洋科学快报（英文版）2024，Vol.17Issue(3)：37-41,5.

大气和海洋科学快报（英文版）2024，Vol.17Issue(3)：37-41,5.DOI:10.1016/j.aosl.2024.100464

Interdecadal changes in the western Siberian summer mean and extreme rainfall during 1982-2021

Yali Zhu ¹Fangwu Song ²Dong Guo³

作者信息

1. Nansen-Zhu International Research Centre,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China||Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science and Technology,Nanjing,China
2. Nansen-Zhu International Research Centre,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China||College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,China
3. Carbon Neutrality Research Center,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China
折叠

摘要

Abstract

本文研究发现,西西伯利亚夏季降水在1995年后显著增加,2012年后又有所减少,极端降水日数和强度呈现一致的变化特征.伴随这两次降水的年代际增加/减少,西西伯利亚上空出现异常气旋/反气旋和水汽幅合/幅散.极端降水发生时的区域环流特征在三个时段基本一致:西西伯利亚低空出现气旋性异常,高空为西北-东南向的异常气旋-反气旋偶极子型.1995-2011年期间,极端降水日数更多,强度更强,上述异常环流型也更强.

关键词

西伯利亚/夏季降水/年代际变化/乌拉尔高压/北大西洋/波流相互作用

Key words

Siberia/Summer rainfall/Interdecadal change/Ural blocking/North Atlantic/Wave-mean flow interaction

引用本文复制引用

Yali Zhu,Fangwu Song,Dong Guo..Interdecadal changes in the western Siberian summer mean and extreme rainfall during 1982-2021[J].大气和海洋科学快报（英文版）,2024,17(3):37-41,5.

基金项目

This work was supported by the National Natural Science Foundation of China[grant numbers 41991281 and 41675083]and Fundamental Research Funds of Institute of Atmospheric Physics,Chinese Academy of Sciences[grant number E3680218]. （）

大气和海洋科学快报（英文版）

ISSN：1674-2834

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