Abstract:

Using the data of 116 times’samples of aircraft artificial precipitation enhancement operation from 2000to2003（March to October），and based on the real time data at 500 hPa at 08：00，five weather types which benefit aircraft artificial precipitation enhancement were obtained according to different path of the cold current in vaing Gansu province：plateau low trough，southwest aircurrent，straight fluctuant，northwest air current and northern low trough.

Key words: aircraft artificial precipitation enhancement, weather systemt ypes, weather characteristic

摘要：

选用2000~2003年3~10月，甘肃省实施飞机人工增雨的116架次资料为样本，以增雨当日08时500hPa资料为主，根据冷空气入侵甘肃的不同路径，将有利飞机人工增雨的天气系统分为5种类型：高原低槽型、西南气流型、平直气流型、西北气流型和北方低槽型，并分析了不同系统的特征。

关键词: 飞机增雨, 天气系统分型, 天气特点