郴州市2010年“6．20”暴雨过程分析

Analysis of the Rainstorm Process Occurred at Chenzhou in June 20, 2010

利用常规探空资料、T213数值预报产品和卫星云图等，对湖南省郴州市2010年6月20日一次大暴雨天气成因进行诊断分析。分析表明：高空短波槽、中低层切变配合地面冷空气，以及中低层西南急流提供充足水汽条件是本次暴雨天气过程主要原因，高空各层次散度场区域分布和卫星云图对预报暴雨落区有很好的指示作用。

Based on the conventional meteorological sounding data, the T213 numerical forecast products and the satellite cloud images and so on, we have diagnosed the weather causes from a heavy rainstorm occurred at Chenzhou City, Hunan Province in June 20, 2010. The analysis indicated that： The upper air short-wave trough, the lower level shear coordinates with the surface cold air, as well as the southwest jet stream in the lower level which provides the sufficient water vapor, were the main reason for this heavy rainstorm synoptic process. And the upper air divergence regional distribution at all levels and the satellite cloud images play a good indicative role on the rainstorm territory forecast.