| 特殊地形及地形梯度对西昌发射场暴雨的影响 |
| |
| 引用本文： | 汪正林,党建涛.特殊地形及地形梯度对西昌发射场暴雨的影响[J].气象,2006,32(12):36-42. |
| |
| 作者姓名： | 汪正林 党建涛 |
| |
| 作者单位： | 1. 北京大学物理学院大气科学系,北京,100871;西昌卫星发射中心气象室
2. 西昌卫星发射中心气象室 |
| |
| 摘 要： | 研究了西昌发射场特殊地形及地形梯度对其暴雨天气的影响。对比分析表明：2004年6月23日暴雨过程属于低涡切变型暴雨，6月27日暴雨过程属于两高辐合型暴雨。利用MM5V3．7进行了多组地形敏感试验，结果表明：场区北侧山脉对场区降水量影响明显，西昌东侧山脉对西昌降水量影响明显。地形梯度分析表明，西昌地区所处的河谷地形和场区所处喇叭口小地形，有利于中小尺度气压扰动的发生、发展和暴雨的产生，当地形梯度减弱时，降水量相应减弱。
|
| 关 键 词： | 地形 暴雨 诊断分析 敏感试验 |
| 收稿时间： | 06 16 2006 12:00AM |
| 修稿时间： | 2006-06-162006-09-20 |
Effect of Terrain on the Heavy Rain of Xichang, Sichuan Province |
| |
| Wang Zhenglin,Dang Jiantao.Effect of Terrain on the Heavy Rain of Xichang, Sichuan Province[J].Meteorological Monthly,2006,32(12):36-42. |
| |
| Authors: | Wang Zhenglin Dang Jiantao |
| |
| Institution: | 1. Department of Atmospheric Science, the School of Physics, Peking University, Beijing 100871; 2. Meteorological Office, Xichang Satellite Launch Center |
| |
| Abstract: | The effects of the terrain and terrain gradient on the heavy rain of Xichang are studied.It shows that the heavy rain on June 23,2004 is a southwest vortex-shear pattern, and the heavy rain on June 27,2004 is a two-high-convergence-pattern.With the mesoscale model (MM5V3.7) from PSU/NCAR,the two events are simulated.It is found that the mesoscale mountain has significant influence on the location and intensity of the heavy rain area,and the bell-mouthed area and the riverway area of Xichang are favorable to the occur-rence and development of mesoscale disturbance and heavy rain. |
| |
| Keywords: | terrain heavy rain diagnostic analysis sensitivity experiment |
| 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 |
