| 一次特大暴雨过程的多普勒天气雷达资料分析 |
| |
| 引用本文： | 蒋义芳,尹东屏,刘安宁.一次特大暴雨过程的多普勒天气雷达资料分析[J].气象科学,2011,31(3):347-353. |
| |
| 作者姓名： | 蒋义芳 尹东屏 刘安宁 |
| |
| 作者单位： | 江苏省气象台,南京,210008 |
| |
| 基金项目： | 江苏省气象科研开放基金项目(200910);中国气象局气象新技术推广项目预报员专项(CMATG2009YB12) |
| |
| 摘 要： | 利用卫星云图和多普勒天气雷达资料对2008年8月1—2日上午发生在安徽东南部及江苏西南部特大暴雨过程进行了分析。结果表明，这次区域性特大暴雨是由台风减弱演变为深厚低压系统所引发，暴雨区域辐合上升运动强烈，西南低空急流强盛，同时中层冷空气侵入触发不稳定能量释放；特大暴雨的发生与中β尺度强对流云团多次发展以及长时间维持密切相关，中尺度云团的最冷云区亮温和面积决定了暴雨强度；积层混合云降水回波内部有多个尺度不等的的对流回波相继经过暴雨发生地形成“列车效应”，从而造成持续性暴雨，暴雨回波的强回波核总是位于云体的中下部，这是暴雨回波的典型特征；特大暴雨发生阶段，对流层中低层辐合厚度增加，强度增强，同时低层（2 km以下）伴随下沉运动，2 km以上则为上升运动。
|
| 关 键 词： | 特大暴雨 低空急流 多普勒天气雷达 |
| 收稿时间： | 2010/1/12 0:00:00 |
Analysis on Doppler weather radar data of an extraordinarily heavy rainfall |
| |
| JIANG Yifang,YIN Dongping and LIU Anning.Analysis on Doppler weather radar data of an extraordinarily heavy rainfall[J].Scientia Meteorologica Sinica,2011,31(3):347-353. |
| |
| Authors: | JIANG Yifang YIN Dongping and LIU Anning |
| |
| Institution: | Jiangsu Meteorological Observatory, Nanjing 210008,China;Jiangsu Meteorological Observatory, Nanjing 210008,China;Jiangsu Meteorological Observatory, Nanjing 210008,China |
| |
| Abstract: | Based on the satellite cloud picture and Doppler weather radar data,the extraordinarily heavy rainfall from 1 August to 2 August,2008 occurred in southeast of Anhui province and southwest of Jiangsu province was analyzed.The results show that the rainstorm was caused by re-intensified depression as the result of landfall of typhoon.There was severely convergent ascending motion and southwest low-level jet over rainstorm area.The cold air-mass which was intruded into middle troposphere triggered the instabil... |
| |
| Keywords: | Severe heavy rainfall Low-level jet Doppler weather radar |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《气象科学》浏览原始摘要信息 |
| 点击此处可从《气象科学》下载免费的PDF全文 |
