营口一次局地强降水过程分析

A Local Heavy Rain Process Analysis in Yingkou

利用MICAPS、天气雷达、加密自动站等资料,从大气环流形势、物理量诊断分析等方面对2014年8月23-25日营口地区发生的一次局地强降水过程进行分析。结果表明,贝湖槽东移南下,冷空气沿槽前西北气流南下,配合地面低压共同作用,为营口地区降水提供了动力条件,同时850 hPa切变线有利于触发强对流天气的产生,配合有利的水汽条件,进而产生局地暴雨过程。

A local heavy rain during August 23- 25,2014 was analyzed by using conventional data such as MICAPS,Doppler weather radar data,in terms of analysis of atmospheric circulation and diagnosis. Conclusions are drawn that this rainstorm is a common weather type which leads to heavy rain here in summer： trough east south bay lake,cold front moving down along the groove former northwest airflow and low pressure combined with ground,provided the impetus for Yingkou area precipitation conditions,while 850 hpa shear line is beneficial to trigger the generation of strong convective weather,with good moisture conditions,which produce local rainstorm process