2012年7月4日潍坊地区暴雨天气成因分析

为了研究透彻潍坊地区经常发生的暴雨天气，总结归纳夏季经常发生的暴雨天气类型，笔者利用常规观测资料和卫星、自动站、多普勒雷达等资料，对2012年7月4日潍坊地区暴雨过程进行天气动力学和中尺度分析。结果表明：造成此次暴雨天气的影响系统是低层切变线和地面倒槽，在副热带高压控制下的大尺度环流形势非常有利，低层水汽堆积及高层的强辐散为强对流发生提供了热力和动力条件。透彻分析影响潍坊地区的这种典型夏季暴雨类型，将为以后的预报工作积攒丰富经验。

Analysis of the Causes of the Torrential Rain Weather over Weifang on 4 July, 2012

In order to study thoroughly frequent rainstorm weather in Weifang area, the author summarized the type rainstorm weather, induced summer often happens, by using conventional observation data and satellite, automatic weather station, Doppler radar data, the rainstorm process in Weifang area in July 4, 2012 were analyzed. Scale mechanics and dynamic weather results showed that： impact system this rainfall was shear line of low layer and surface trough, very favorable large scale circulation situation under the control of the subtropical high, strong divergence low-level moisture accumulation and high bulk to provide thermal and dynamical conditions of strong convection. A thorough analysis of this type of typical heavy rainfall in summer in Weifang area is for the prediction for the accumulation of exnerience.