湖北省集中暴雨特征分析  

Characteristic Analysis of Concentrated Heavy Rainfall in Hubei Province

作　　者：周小兰[1] 王登炎[2] 王建生[2] 王小芳[1] 

机构地区：[1]湖北省气象局武汉暴雨研究所 [2]武汉中心气象台,武汉430074

出　　处：《气象科技》2006年第4期405-409,共5页Meteorological Science and Technology

基　　金：湖北省气象局"灾害性暴雨研究"课题资助

摘　　要：定义了湖北省集中暴雨的标准。对1954年以来发生在湖北省的符合标准的12个集中暴雨过程作了详尽的分析,发现集中暴雨为3场以上的暴雨组成:第1场为冷锋暴雨,即东亚大槽建立形成的暴雨,强度较弱;第2场为高原涡(槽)叠在切变线和露点锋上形成的暴雨,强度较强,常常为特大暴雨,或有较弱暴雨夹在其中;第3场为低槽形成的暴雨,强度较弱。归纳出了集中暴雨的环境条件,大中尺度天气学特征,得出了一些有用的结论,对湖北集中暴雨的预报有参考价值。The standards of concentrated heavy rainfall in Hubei Province are defined. There occurred 12 cases of concentrated heavy rainfall in the range of the standards in Hubei Province since 1954, of which the detailed analysis is made, It is showed that concentrated heavy rainfall usually consists of three or more heavy rain events. The first is cold-front heavy rain, which forms in the process of East-Asia trough building-up and weakening. The second occurs in the eastward-moving process of the Qinghai-Tibet Plateau vortex, which is superimposed above the dew-point front. It is usually severe heavy rainfall. The third is low-trough heavy rainfall, relatively weak. The environmental conditions and large- and meso-scale synoptic features for concentrated heavy rainfall are summed up. The results are useful for the short- and medium-range heavy rain forecasting,

关 键 词：集中暴雨 特征分析 预报 

分 类 号：P458.121.1[天文地球—大气科学及气象学]