淮河流域暴雨过程的数值模拟和诊断分析

Numerical Simulation and Diagnostic Analysis of a Heavy Rainfall Process over the Huaihe River Valley

利用中尺度数值模式WRF输出结果,对2003年7月4—6日淮河流域出现的暴雨过程进行了诊断分析。结果表明,WRF模式对这次暴雨过程的雨带位置和走向均有较好的模拟,但暴雨中心位置偏移。这次暴雨过程中尺度天气系统的发生、发展、加强及衰减均在模拟结果中有所显现。

A heavy rainfall process during 4th-6th July 2003 over the Huaihe River valley was simulated by the Mesoscale Model for Weather Research and Forecasting （MMWRF）. The results of diagnostic analysis show that the distribution of the rainfall belt was simulated successfully by the MMWRF model,but there was a deviation in the location of the heavy rain center. The genesis, development, intensification and decay of the mesoscale synoptic system during the process were also fairly simulated.