一次大到暴雨天气过程分析

摘要

By using the weather map,the predicted products of number value,the satellite cloud chart and relevant materials,this paper analyzed a rare heavy rain weather course took place on August 19,2001 in Zhangjiakou City,announced the appearing and disappearing cause,heating power dynamics condition,mainly influencing the system and mainly sending the way of this course. The torrent in the middle-lower was the main way of transporting the unstable energy and the steam in this heavy rainfall;The low whirlpool of low latitude was the main influence system causing this torrential rain directly. Analyzing this course could improve the prediction service ability of strong precipitation in Weixian County in summer.%运用天气图、数值预报产品、卫星云图及相关资料，综合分析了2013年8月19日发生在张家口市的1次少见的大到暴雨天气过程，从而揭示此次过程的生消成因、热力动力学条件、主要影响系统以及主要输送通道。结果表明：中空急流是这次暴雨天气的水汽和不稳定能量的主要输送通道；低空低涡是直接导致这场暴雨的主要影响系统。通过这次过程分析，有助于提高蔚县夏季强降水的预报服务能力。