吉林省突发性暴雨的时空分布特征

The Space-time Distribution Features of Sudden Hard Rain in Jilin Province

使用吉林省５４个气象站１９６０—１９９２年逐日、逐时降水资料，分析定义突发性暴雨过程，并从时空分布及地形影响等方面对各类突发性暴雨（即：局地突发性暴雨、区域突发性暴雨、突发性大暴雨）进行了分析，得出它们之间在时间分布和地理分布上的差异，为此类天气分析预报提供气候背景。

ased on the daily-per-hour precipitation data from 54 meteorological stations in Jilin Province during 1960-1992 , sudden cloud-burst process has been analysed and defined. Spatical and temporal distribution and orgraphic influence of unexpectedly hard rain (local suddenly storm rainfall,areal abruptly rain gush,spate) has been analysed. The results show that there were difference between time distribution and orgraphic distribution, which provided climatic scenario foundation for the weather analysis forecast.