前汛期短历时强降水天气分析（二）——大范围强降水的概念模式  

The analysis of the ultra-short strong precipitation during the rainfall season

作　　者：刘爱鸣[1] 林毅[1] 刘增基[1] 蔡义勇[1] 

机构地区：[1]福建省气象台,福州350001

出　　处：《福建气象》2001年第4期1-4,共4页

摘　　要：本文在统计分析福建省前汛期短历时强降水（3小时雨量大于等于30毫米）天气过程的主要环流背景和影响系统的气候特征的基础上，以850hPa分型为主，结合地面和500hPa环流系统，将前汛期大范围短历时强降水归纳为六种类型。结果表明前汛期短历时强降水与冷空气关系密切，要特别注意沿海槽的活动和低空切变的位置；而南海云团北上及热带气旋影响在前汛期虽出现的气候概率不大，但造成大范围强降水的几率很大，也应引起足够重视。Then according to the interrelation between upper and low-level systems, the weather of the ultra-short strong rainfall may pointed out： there is a close correlation between be classified into six-type. This paper has the ultra-short strong rainfall and cold air; both the operation of the coast trough and the position of low-shear are very important;though the cloud cluster form the South China Sea or the influential of tropical cyclone has less frequency during the rainfall season but large range strong rainfall caused by either of them has more probability.

关 键 词：前汛期 短历时强降水 影响系统 环流型 

分 类 号：P457.6[天文地球—大气科学及气象学] TU992.02[建筑科学—市政工程]