2003年7月3日梅雨锋切变线上的β-中尺度暴雨云团分析  

ANALYSIS OF THE MESO-β CONVECTIVE CLOUD CLUSTER OVER MEIYU FRONT ON 3 JULY 2003

作　　者：方宗义[1] 项续康[1] 方翔[1] 李小龙[1] 

机构地区：[1]国家卫星气象中心,北京100081

出　　处：《应用气象学报》2005年第5期569-575,共7页Journal of Applied Meteorological Science

基　　金：国家基础研究项目基金"我国华南致洪暴雨监测与预测的理论和方法研究"(2004CB418305)资助

摘　　要：利用多种气象卫星遥感资料及加工产品,对2003年7月3日产生在皖北的暴雨过程进行了中尺度分析。分析表明:在切变线云带上有11个β-中尺度对流云团发展,水平范围约100 km,生命史约5 h;其背景场是整个对流云区内具有高湿、正涡度和上升运动的特征,它们促使切变线内高湿斜压不稳定能量释放,促使β-中尺度云团发展,产生很强的降水,云团的水凝物廓线上部的可降水冰和云冰含量很高,最大值达0.8 g/kg,最大高度达18 km,云顶亮温低于-80℃。In term of meteorological satellite sensing data and processed products, the mesoscale aspects of a rainstorm system occurred over the north of Anhui province on 3 July 2003 are analyzed. It suggests that there are 11 meso-β convective cloud cluster developed with 100 km in spatial scale and 5 h in time scale, High humidity, positive vorticity and upward current, which lead to the energy release of the high humidity baroclinic instability and the development of meso-β cloud cluster, help making for the environment for heavy precipitation. The other characters making for heavy precipitation is that the high contents of ice for potential precipitation and ice in cloud on the upper of the water coagulation profile of clouds with the maximum of 0.8 k/kg, the highest height 18 kin, and the brightness temperature on the top of these clouds under - 80 ℃ .

关 键 词：β-中尺度云团 切变线 低涡 中尺度分析 暴雨云团 中尺度对流云团 梅雨锋 卫星遥感资料 斜压不稳定 加工产品 

分 类 号：P441[天文地球—大气科学及气象学]