| 夏季中国南方流域性致洪暴雨与季风涌的关系 |
| |
| 引用本文： | 陶诗言,卫捷.夏季中国南方流域性致洪暴雨与季风涌的关系[J].气象,2007,33(3):10-18. |
| |
| 作者姓名： | 陶诗言 卫捷 |
| |
| 作者单位： | 中国科学院大气物理研究所,北京,100029 |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划) |
| |
| 摘 要： | 中国淮河以南地区夏季最易受到洪水灾害的威胁，这种致洪暴雨一般出现在沿着河谷走向的静止锋上。在引发致洪暴雨的环流系统中，季风涌的作用非常重要，它提供了暴雨产生所必须的水汽。分析了1998、2003、2005及2006年中国南方流域性致洪暴雨和东亚季风涌，以及与赤道附近大气环流的30～60天振荡（称作Madden—Julian Oscillation，简称MJO）活动的关系。当来自赤道印度洋的MJO引起南海地区西风的加强；南海西风的加强，触发中国南部大陆出现季风涌；季风涌与来自北方的冷空气交绥，造成静止锋上的致洪暴雨。由此提出我国南方夏季流域性致洪暴雨中、短期预报的基本思路。
|
| 关 键 词： | 致洪暴雨 季风涌 |
| 收稿时间： | 2006/12/9 0:00:00 |
| 修稿时间： | 2006-12-092007-01-17 |
Correlation between Monsoon Surge and Heavy Rainfall Causing Flash-flood in Southern China in Summer |
| |
| Tao Shiyan and Wei Jie.Correlation between Monsoon Surge and Heavy Rainfall Causing Flash-flood in Southern China in Summer[J].Meteorological Monthly,2007,33(3):10-18. |
| |
| Authors: | Tao Shiyan and Wei Jie |
| |
| Institution: | Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
| |
| Abstract: | During summer the southern part of China to the south of the Huaihe River is vulnerable to the threat of the heavy rainfall causing flood damages. The rainstorms usually appear on a stationary front which is situated along the river basins. There is a monsoon surge to the south of the stationary front bringing moisture into the rainstorms. The relation between the monsoon surge and the heavy rainfall causing flood damages in southern China is studied. It is found that the intraseasonal variability of the general oscillation from the equatorial Indian Ocean named the Madden-Julian Oscillation (MJO) is most prominent in Asian and Australian monsoon sectors. When MJO propagates to the South China Sea sectors, the west winds (monsoon) at 850hPa will strengthen and the sector convection will be enhanced. At the same time, there is a monsoon surge in the southern part of China. When the monsoon surge meets with cold air from northern China, there will be severe rainstorms along the stationary front. |
| |
| Keywords: | MJO |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《气象》浏览原始摘要信息 |
| 点击此处可从《气象》下载免费的PDF全文 |
