南安市秋季—次大暴雨天气过程分析

本文应用常规观测资料、自动站加密观测资料、天气图、物理量场和云图等，对南安市秋季的一次大暴雨天气过程进行分析，研究了此次大暴雨天气过程的天气系统、水汽条件、不稳定度和动力触发机制，分析了该天气系统的演变情况、物理量场的配合的应用情况。结果表明，热带低压和冷空气的共同影响是造成此次大暴雨天气过程的重要原因。

The Synoptic Analysis of a Heavy Rainstorm Occurred in Autumn in Nan' an City

In this paper, a heavy rainstorm occurred in autumn in Nan＇ an city has been analyzed. The regular observation data, the intensive observation data from the automatic station, the synoptic map, the physical parameters, as well as the cloud charts have been used to study the weather systems and the water vapor conditions of this heavy rainstorm. The unstable degree of the atmosphere as well as its dynamic-inducing mechanisms has also been studied. By analyzing the evolutions of the weather systems and combining the uses of the physical parameters, it is found that the tropical depression and the cold air are important factors for this heavy rainstorm.