| A Case Study on the Role of Water Vapor from Southwest China in Downstream Heavy Rainfall |
| |
| 作者姓名： | 潘旸 宇如聪 李建 徐幼平 |
| |
| 作者单位： | State Key Laboratory of Numerical Modeling for Atmospheric and Geophysical Fluid Dynamics Institute of Atmospheric Physics，Chinese Academy of Sciences，State Key Laboratory of Numerical Modeling for Atmospheric and Geophysical Fluid Dynamics，Institute of Atmospheric Physics，Chinese Academy of Sciences，State Key Laboratory of Numerical Modeling for Atmospheric and Geophysical Fluid Dynamics，Institute of Atmospheric Physics，Chinese Academy of Sciences，State Key Laboratory of Numerical Modeling for Atmospheric and Geophysical Fluid Dynamics，Institute of Atmospheric Physics，Chinese Academy of Sciences，Beijing 100029 Graduate University of Chinese Academy of Sciences，Beijing 100049，Beijing 100029，Beijing 100029，Beijing 100029 |
| |
| 基金项目： | CAS International Partnership Creative Group，国家重点基础研究发展计划(973计划) |
| |
| 摘 要： | Based on the observation data analysis and numerical simulation, the development of an eastwardmoving vortex generated in Southwest China during the period 25 27 June 2003 is studied. The water vapor budget analysis indicates that water vapor in the lower troposphere over Southwest China is transported downstream to the Yangtze and Huaihe River valleys by the southwesterly winds south of the vortex center. A potential vortieity （PV） budget analysis reveals that a positive feedback between latent heat release and low-level positive vortieity plays a vital role in the sudden development and eastward movement of the vortex. Numerical simulations are consistent with these results.
|
| 关 键 词： | 中国东南部 涡旋 降雨 水蒸气 数字模拟 |
A case study on the role of water vapor from Southwest China in downstream heavy rainfall |
| |
| Yang?Pan,Rucong?Yu,Jian?Li,Youping?Xu.A Case Study on the Role of Water Vapor from Southwest China in Downstream Heavy Rainfall[J].Advances in Atmospheric Sciences,2008,25(4):563-576. |
| |
| Authors: | Yang Pan Rucong Yu Jian Li Youping Xu |
| |
| Institution: | [1]State Key Laboratory of Numerical Modeling for Atmospheric and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 [2]Graduate University of Chinese Academy of Sciences, Beijing 100049 |
| |
| Abstract: | Based on the observation data analysis and numerical simulation, the development of an eastward- moving vortex generated in Southwest China during the period 25-27 June 2003 is studied. The water vapor budget analysis indicates that water vapor in the lower troposphere over Southwest China is transported downstream to the Yangtze and Huaihe River valleys by the southwesterly winds south of the vortex center. A potential vorticity (PV) budget analysis reveals that a positive feedback between latent heat release and low-level positive vorticity plays a vital role in the sudden development and eastward movement of the vortex. Numerical simulations are consistent with these results. |
| |
| Keywords: | vortex potential vorticity heavy rainfall water vapor numerical simulation |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《大气科学进展》浏览原始摘要信息 |
| 点击此处可从《大气科学进展》下载免费的PDF全文 |
