“2002.6.30”滇中低涡暴雨的中尺度分析  

A Case Analysis of Mesoscale Cold Vortex Heavy Rainfall in Central Yunnan Province

作　　者：郭荣芬[1] 鲁亚斌[1] 

机构地区：[1]云南省气象台,昆明650034

出　　处：《气象》2003年第2期29-33,共5页Meteorological Monthly

基　　金：云南省十五科技攻关 2 0 0 1GN4 3项目资助

摘　　要：利用MICAPS常规资料和GMS卫星云图 ,3830 C多普勒雷达观测资料 ,对2 0 0 2年 6月 30日发生于滇中地区的暴雨天气过程进行诊断和分析 ,发现暴雨过程由中低层低涡切变造成 ,暴雨区与垂直速度及涡度所表现的强烈上升区对应 ,并伴有高能高湿条件 ;同时卫星云图上有中尺度低涡云团发展。多普勒雷达回波资料分析表明 ,暴雨过程中出现了明显的中尺度系统 ,如中尺度辐合线、中尺度气旋、逆风区等 。The cause of the heavy rainfall occurred in central Yunnan Province from June 30,2002 is analysed with the MICAPS data, GMS satellite images and the echo data of Doppler Weather Radar 3830 C.It is found that this heavy rainfall process is caused by cold vortex and mid low level shear. The heavy rainfall region is corresponding with the strong ascending region of vertical speed and vorticity, and accompanied with the high energy and high wet regions. There is a developing mesoscale cold vortex cloud cluster from the satellite image. Furthermore, the radar echoes show that some obvious mesoscale systems (for example: mesoscale convergence line, mesoscale cyclone, anti wind area, etc.) with typical convective characteristics occurred during this heavy rainfall process.

关 键 词：暴雨 中尺度分析 天气过程分析 卫星云图 多普勒雷达 观测资料 雷达回波 

分 类 号：P458.121[天文地球—大气科学及气象学]