2007年6月7～10日永定县连续性暴雨成因分析

Analysis of a continuous torrential rain from 7 June to 10 June 2007 on Yongding county

利用NECP1×16小时再分析资料、常规观测资料、新一代天气雷达回波等资料对2007年6月7～10日永定县出现的四天连续性暴雨天气过程进行诊断分析。结果表明：本次暴雨过程是在有利的大尺度环流、充足的水汽输送和良好的动力条件下产生的，4次降水集中过程在雷达回波上反应明显，并重点分析了4次降水集中期的雷达回波特征及其动力条件。

Based on the NECPlxl six hours reanalysis data, the routine observation data, CINRAD/ SA data, a four-days continuous torrential rain from 7 June to 10 June 2007 on Yongding county is analyzed.The results show that the favourable large-scale circulation,ample vapour condition, the good dynamic conditions caused the torrential rain. The reaction on the radar echo of four times precipitation process is obvious.The radar echo characteristics and dynamic conditions of four times precipitation process are analyzed also.