安阳市一次区域性暴雨过程分析

A Regional Rainstorm Process in Anyang City

利用天气图资料、物理量场、卫星云图、雷达回波等气象资料,对2010年7月19日安阳区域一次典型暴雨天气过程进行分析,进而对安阳市区域性暴雨天气过程的特征进行总结,可以得出以下结论:造成此次区域性暴雨的主要影响系统是西太平洋副热带高压及其西北侧的西风带低槽和西南低涡,属于典型的北槽南涡型暴雨天气类型.低槽引导西南低涡东北上,槽后明显的冷空气与西南低涡东北上、副热带高压外围边缘的西南暖湿气流交汇,共同影响造成了安阳这次区域性暴雨过程.通过对安阳地区暴雨过程形成的机制和机理进行分析研究,总结安阳地区区域性暴雨过程的特征,对未来此类天气过程的预报和服务提供参考.

Weather map data, physical field, satellite images, radar echo meteorological data were used to analyze a typical rainstorm process in Anyang on July 19,2010, and then summarize the characteristics of Anyang City regional rainstorm process. The conclusions are as follow： the main affecting system caused the regional rainstorm was the West Pacific subtropical high, and the westerlies low slot and southwest vortex by its northwest side, which is a typical storm weather type of the north passage south vortex. The low slot guided the southwest vortex to the northeast, then the cold air after the slot and southwest vortex went northeast, and the southwest warm air around the peripheral edge of the subtropical high got intersection. The combined effect of these factors caused the regional rainstorm process of Anyang. Based on the analysis of rainstorm process mechanism and the mechanism of formation, summarizing the characteristics of the process of regional heavy Anyang area, has important practical significance and value of such weather forecasting and service of process in the future.