一次世界罕见特大暴雨的成因初探

Occurrence Cause of a Rare Torrential Rain in Shaanxi Province in 1998

通过对当时的高空、地面天气形势和主要影响系统的跟踪分析 ,结合商洛地区流场、单站气象要素演变曲线 ,以及每小时一次的 GMS- 5卫星云图演变实况 ,参考地形特征 ,初步找出了 1998年 7月 9日商洛特大暴雨的形成原因。

The surface and upper synoptic situation and main influential systems of a rare torrential rain over Shangluo District in Shaanxi Province were analysed.The flow field, meteorologram at one station,hourly GMS 5 images and topographic features were also studied.The occurrence cause of the rare torrential rain in Shangluo District on 9 July,1998 was given.