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Comparison of two types of persistent heavy rainfall events during sixteen warm seasons in the Sichuan Basin

Yuanchun Zhang Jianhua Sun Luqi Zhu Huan Tang Shuanglong Jin Xiaolin Liu

大气和海洋科学快报（英文版）2021，Vol.14Issue(6)：48-53,6.

Comparison of two types of persistent heavy rainfall events during sixteen warm seasons in the Sichuan Basin

Yuanchun Zhang ¹Jianhua Sun ¹Luqi Zhu ²Huan Tang ²Shuanglong Jin ³Xiaolin Liu⁴

作者信息

1. Key Laboratory of Cloud-Precipitation Physics and Severe Storms(LACS),Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China
2. College of Atmospheric Sciences,Lanzhou University,Lanzhou,China
3. State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems,China Electric Power Research Institute,Beijing,China
4. Electric Power Meteorology State Grid Corporation Joint Laboratory(CEPRI),Beijing,China
折叠

摘要

Abstract

本文筛选出四川盆地西部(盆西型)和盆地东部(盆东型)持续性暴雨个例,深入对比两类持续性暴雨的大气环流特征和直接造成持续性暴雨的西南低涡维持的机理.四川盆地的短波槽和西太平洋副热带高压的配置有利于持续性暴雨的维持,盆东型的降水强度较盆西型个例强,高空急流位置偏南,南亚高压的强度更强,高层辐散更强,对流层中层副热带高压偏东偏南.盆西型的水汽输送主要来自南海,而盆东型的水汽输送主要来自南海和孟加拉湾.合成涡度收支的结果表明散度项是两类持续暴雨中西南涡维持的主要原因,但盆西型中,垂直平流的作用更强.

关键词

西南低涡/持续性暴雨/大尺度环流/涡度收支

Key words

Southwest vortex/Persistent heavy rainfall event/Large-scale circulation/Vorticity budget

引用本文复制引用

Yuanchun Zhang,Jianhua Sun,Luqi Zhu,Huan Tang,Shuanglong Jin,Xiaolin Liu..Comparison of two types of persistent heavy rainfall events during sixteen warm seasons in the Sichuan Basin[J].大气和海洋科学快报（英文版）,2021,14(6):48-53,6.

基金项目

This work was supported by the Natíonal Key R&D Program of China[grant number 2018YFC0809400]and the National Natural Science Foundation of China[grant number 41975057]. （）

大气和海洋科学快报（英文版）

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ISSN：1674-2834

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