牡丹江地区一次强对流天气过程分析

Analysis of a strong convective weather process in Mudanjiang

本文利用常规观测、卫星云图、新一代天气雷达及加密雨量站资料对2016年5月26日发生在牡丹江地区的一次强对流天气过程进行分析。结果表明,本次过程受高空冷涡和地面冷锋的共同影响,产生于下层暖湿、上层干冷的环境中。高低空均有较强的西南急流输送。雷达径向速度图上有"速度模糊"出现,"速度模糊"区的位置刚好和灾害性天气发生的位置一致。低层零等速度带呈"S"形,说明风随高度顺转,不断有暖平流向上输送补充能量。主要特点是降水范围大、降雨急、风力大,穆棱地区产生了冰雹天气。

A severe convective weather process occurred in Mudanjiang area in May 26, 2016 is analyzed by conventional observation, satellite cloud map, new generation weather radar and encrypted rainfall station data. The results show that this process is affected by both the high-altitude cold vortex and the cold front of the ground, and it is produced in the environment where the lower layer is warm and wet and the upper layer is dry and cold. There is strong south-west jet transport at high and low altitudes. The ＂velocity blur＂ appears on the radar radial velocity map, and the location of the ＂velocity blur＂ area coincides with the location of the severe weather. The low-level zero-velocity zone is in an ＂S＂ shape, indicating that the wind rotates clockwise with height, and there is a warm and calm flow upward to supply additional energy.