利用常规气象资料及FY-2C气象卫星云图、多普勒天气雷达回波等,采用天气学诊断分析方法对2010年8月13日傍晚到夜里出现在太行山脚下河南焦作市一次局地突发性大暴雨过程进行了分析.结果表明,西风槽、副热带高压、中低层切变线、地面冷锋和暖倒槽是这次局地大暴雨的主要的天气尺度系统;强降水发生前,焦作已经形成了明显的能量锋区,且上干下湿的大气层结随着地面冷锋逐渐东南下,焦作触发了强对流天气；低层辐合高层辐散的散度场配置,增强了大气的抽气作用,导致暴雨区上空较强的垂直上升运动,从而有利于降水的加强,为暴雨的产生提供了动力条件；卫星云图上3个对流云团合并加强是造成焦作短时强降水的主要原因；雷达图上的反射率因子、回波顶高、垂直累积液态含水量产品对于强降水有很好的指示意义.%Based on the conventional meteorological data, FY-2C meteorological satellite cloud pictures and Doppler weather radar, etc. , a local sudden heavy rain process happened from the evening to the night of August 13, 2010 in Henan Jiaozuo City at the foot of the Taihang Mountains was analyzed by using weather diagnosis methods. As indicated by the results, westerly trough, subtropical high, level wind shear line, surface cold front and warm inverted trough were main synoptic scale systems; The energy front has been formed before heavy precipitation. Under the wet on dry atmospheric stratification, the severe conveclive weather was triggered by the gradual moving of surface cold front to southeast. Low-level convergence and high-level divergence field configuration enhanced the pumping effect of the atmosphere and led to strong vertical ascending motion over the heavy rain area, thus contributing to the strengthening of precipitation and providing dynamic conditions for the generation of heavy rain. The merge and strengthening of three convective clouds in the satellite images was the main reason to cause short-term heavy precipitation in Jiaozuo. The products of reflectivity, echo tops, vertically integrated liquid water on the radar chart had a good indication of the significance of heavy precipitation.
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