一次灾害性暴雨过程分析

目的]分析丹东地区一次灾害性暴雨天气过程。方法]利用实时资料,从环流形势、影响系统、低空急流对暴雨的触发作用以及稳定度和动力条件,对2009年6月9日一次灾害性暴雨天气过程进行初步诊断分析。结果]蒙古气旋为暴雨的产生提供抬升的动力,江淮切变线将南部水汽源源不断地向北输送,副高西侧有江淮切变线,东侧的西南气流叠加形成的西南急流在丹东南部有水汽通量的幅合,使南来的水汽在丹东南部堆积抬升,水汽凝结潜热释放,加强了中尺度上升运动,致使此次强降水持续时间较长,从而产生暴雨。结论]该研究为暴雨预报提供一定参考。

Analysis on a Disastrous Rainstorm Process

Objective] A disastrous rainstorm process in Dandong region was analyzed.Method] Based on real time data,the primary diagnosis analysis of a disastrous rainstorm process on June 9th,2009 was carried out from the aspects of circulation pattern,influence system,the trigger action of low-level jet to rainstorm,stability and dynamic condition.Result] Mongolia cyclone provided uplift power for generating rainstorm,and Changjiang-Huaihe shear line transported water vapor from south to north continually,while t...