风廓线雷达产品在冰雹天气过程中的应用研究

本文利用威宁县2022年6月2日一次冰雹天气过程风廓线雷达资料和威宁国家基准气候站降水资料，采用数理统计等方法对本次天气过程的风廓线雷达特征进行分析结果表明：冰雹、短时强降水开始前，低空急流的建立和垂直风切变的加强，急流造成的辐合加上近地层风向的切变作用为冰雹和强降水的产生提供了很好的动力条件；冰雹和短时强降水开始发生时，2000米高度以上有很大的正速度，可以作为一个指标判断对流发展的强弱情况；冰雹发生时折射结构常数（Cn2）值在-128~-110dB之间，也能很好的反映冰雹等强对流天气的开始，增强和结束过程。

Application of wind profile radar products in hail weather process

In this paper, the wind profile radar data of a hail weather process in Weining County on June 2, 2022 and the precipitation data of Weining National Benchmark Climatic Station are used to analyze the wind profile radar characteristics of this weather process by using mathematical statistics and other methods. The results show that before the beginning of hail and short-term heavy precipitation, the establishment of low-level jet and the enhancement of vertical wind shear, The convergence caused by jet stream and the shear effect of wind direction in the near surface layer provide a good dynamic condition for the generation of hail and heavy rainfall; When hail and short-term heavy rainfall begin to occur, there is a large positive velocity above the height of 2000 meters, which can be used as an indicator to judge the strength of convection development; When hail occurs, the refractive structure constant (Cn2) is - 128~- 110dB, which can also well reflect the beginning, enhancement and end of severe convective weather such as hail.