漳平市2017年6月1—2日暴雨天气过程分析

Analysis of the Rainstorm Weather Process on June 1-2,2017 in Zhangping

利用常规观测资料、NCEP再分析资料、卫星资料、雷达资料等,对2017年6月1—2日漳平市暴雨天气过程进行分析。结果表明,此次暴雨天气主要受低层切变东移过境影响造成,高中低层的槽线具备较为显著的前倾倾向,前倾槽表明高层冷空气移动速度要比低层快,在高层冷空气已到达的形势下,地面依然主要受暖低值中心所控制,上下层存在较大温度差,气温的垂直递减率不断变大,为漳平市暴雨天气发生提供了有利条件。有利水汽、不稳定能量及动力条件共同促使此次暴雨天气的发生发展。卫星云图资料显示低槽云系中有中小尺度系统,密实云体与降水大值区相对应,雷达反射率因子强回波区、垂直液态含水量大值区与暴雨区域相对应。

Based on the conventional observation data, NCEP reanalysis data, satellite data and radar data, the rainstorm weather process on June 1-2, 2017 in Zhangping was analyzed. The results showed that the rainstorm was mainly affected by the eastward movement of low level shear line. The favorable water vapor, unstable energy and dynamic conditions contributed to the occurrence and development of the rainstorm. The satellite cloud image data showed that there were small and medium-sized scale systems in the low-trough cloud system, and the dense cloud corresponded to the large value area of precipitation, the strong radar echo area and the large liquid water content area corresponded to the rainstorm area.