庐山台风暴雨环境背景与云型特征分析

Analysis of backgrounds of typhoon rainstorm and characteristics of cloud type in Lushan

使用近10年来登陆台风对庐山降水影响的历史资料进行了分析,结果表明:(1)影响庐山降水的台风移动路径主要为中路;其它登陆台风,中心位置低于北纬25°N或高于北纬30°N,对庐山的影响都很小。(2)500 hPa平均场以上和500 hPa平均场以下,天气系统的特定配置易引发庐山台风暴雨。(3)庐山地形对台风降水的增幅作用十分明显。(4)台风影响庐山主要有3种云型:分别表明台风3个不同阶段的云型特征。

Historical data of Lushan area＇s precipitation influenced by landed typhoon in the last 10 years were analyzed in this paper.Results show that,（1） the typhoon moving path influencing Lushan area＇s precipitation is mainly the middle road,while the other typhoon moving paths are negligible;（2） special collocation of synoptic system over and under 500 hPa mean field is easy to initiate typhoon rainstorm in Lushan area;（3） the impact of Lushan terrain on the precipitation increase from typhoon is very obvious;（4） There are three main cloud types influencing typhoon＇s precipitation in Lushan area,and they indicate the characters of cloud types in three different stages respectively.