“2003.6.2”十堰强对流天气雷达回波和数值模拟分析  

ANALYSIS OF RADAR ECHO AND NUMERICAL SIMULATION FOR A SEVERE CONVECTIVE WEATHER IN SHIYAN ON JUNE 2,2003

作　　者：吴涛[1] 黄锐[2] 舒防国 蓝天飞[2] 

机构地区：[1]南京大学大气科学系,南京210093 [2]湖北省十堰市气象局,湖北442000

出　　处：《气象科学》2005年第6期629-637,共9页Journal of the Meteorological Sciences

基　　金：科技部中央级科研院所社会公益研究专项资金项目(编号:2001DIB20102)资助

摘　　要：利用714C天气雷达回波和数值模拟资料,结合其它天气资料,分析了2003年6月2日发生在十堰境内的强对流天气过程。结果表明,此次强对流天气过程是在有利的大尺度天气形势背景下,由复杂地形触发出初始单体并发展为多单体强风暴产生冰雹和大风天气,雷达回波特征明显。风暴回波强度强,回波结构紧密,顶部有旁瓣假回波,低层存在弱回波区(WER),环境风的垂直切变较强。中β低涡的产生为强对流天气的产生和维持发挥了重要作用。By using the 714C radar echo,numerical simulation data and other weather data , a severe convective weather process which occured in Shiyan on June 2, 2003 is analyzed. The result shows that the severe convective storm was based on the favourable large scale weather background, complex orography triggered the origin of single cell which was developed to severe storm made up of multiple cells causing hail and severe wind, characteristics of radar echo was evident. The storm is characterized by the intensive radar echo, pseudo-echo on the cloud top caused by radar sidelobe,weak echo area at the lower level and the intensive environment wind shear in vertical direction. Meso β low vortex played an important role in the generation and maintenance of severe convective weather.

关 键 词：强对流天气 雷达回波 数值模拟 多单体强风暴 

分 类 号：P463.1[天文地球—大气科学及气象学]