中文摘要：

通过WRF模式对2003年7月9日至10日梅雨锋暴雨天气过程在有、无地形情况下数值模拟的结果的分析,探讨了地形对梅雨锋暴雨的影响。研究表明：在有地形的模拟中,模拟的结果较好地再现了梅雨锋降水过程、主要影响系统和梅雨锋的结构;而无地形的模拟中,模拟的雨带偏南,强降水范围偏大,降水系统偏南。地形对梅雨锋暴雨的作用是由于地形减弱了北方冷空气的强度。

英文摘要：

The numerical simulations of Meiyu front heavy rain in Yangtze River from July 9 to 10, 2003 have been conducted by WRF model with terrain and without terrain. The simulated results with terrain can reproduce successfully the process of precipitation, the dominating synoptic systems as well as the vertical and horizontal structures of the Meiyu frontal system. The simulated results without terrain show that the rain belt is located anomalously southward associated with too wide range. The topography reduces the strength of the northern cold air.