| 一次强对流天气中尺度涡旋结构和冰雹落区分析 |
| |
| 引用本文： | 张京英,漆梁波.一次强对流天气中尺度涡旋结构和冰雹落区分析[J].气象科技,2008,36(3):293-299. |
| |
| 作者姓名： | 张京英 漆梁波 |
| |
| 作者单位： | 1. 山东省临沂市气象局,临沂,276004
2. 上海市中心气象台,上海,200030 |
| |
| 基金项目： | 山东省气象局重点科研课题 |
| |
| 摘 要： | 利用临沂新一代天气雷达资料和中尺度数值模式MM5,模拟分析了2005年6月18日临沂市一次强对流天气过程.分析表明:强对流天气过程丰要发生在高空干冷气流、低空暖湿气流的不稳定大气层结下,影响系统为中层700 hPa的中尺度涡旋.涡旋的生成机制为:在西南风的背景场上,两北气流和东南气流分别从高空和低空向其嵌入,形成了巾尺度气旋性涡旋.该涡旋风场和温湿场结构东西不对称,冰雹落区主要位于涡旋中心东南侧;雷达回波的演变分析表明,强回波区回波强度中心由低到高几乎呈垂直分布;降雹过程中,回波强度增强,回波顶下降,VIL值迅速减小.
|
| 关 键 词： | 数值模式 冰雹落区 中尺度涡旋 强对流天气 |
| 收稿时间： | 2007/5/14 0:00:00 |
| 修稿时间： | 2007/7/10 0:00:00 |
Analysis of Mesoscale Vortex Structure and Hail-Falling Area in a Severe Convective Weather Event |
| |
| Zhang Jingying and Qi Liangbo.Analysis of Mesoscale Vortex Structure and Hail-Falling Area in a Severe Convective Weather Event[J].Meteorological Science and Technology,2008,36(3):293-299. |
| |
| Authors: | Zhang Jingying and Qi Liangbo |
| |
| Institution: | Linyi Meteorological Bureau, Shandong Province, Linyi 276004;Shanghai Meteorological Center, Shanghai 200030 |
| |
| Abstract: | A detailed analysis is conducted on a severe storm occurred on 18 June 2005, combined the new generation radar data of Linyi with mesoscale numerical model outputs. The result shows that the strong convection weather process took place under the condition of dry and cold at upper levels and warm and moisture at lower levels, and the main factor causing this event is an asymmetric mesoscale vortex at 700 hPa. The hail falling area was located at the southeast part of the vortex. The analysis of radar echoes shows that the strong centers were almost distributed vertically. During the hail process, the echo intensity increased, and the echo top and VIL (Vertical Integrated Liquid water) decreased quickly. |
| |
| Keywords: | |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《气象科技》浏览原始摘要信息 |
| 点击此处可从《气象科技》下载免费的PDF全文 |
|
