青海省东部农业区多点联合防雹个例分析
Case Analysis of Multi-Point Joint Hail Prevention in the Eastern Agricultural Region of Qinghai Province
中文摘要：
雹云发展变化的物理过程研究，对进一步认识冰雹云，总结人工防雹作业经验，提高人工防雹的作业水平具有重要意义。利用多普勒雷达资料和MICAPS常规观测资料等，从天气形势、环境条件、回波演变及效果检验等方面，对2020年7月1日发生在青海省东部农业区的一次多点联合防雹个例进行分析。结果表明：雷达图上多个对流单体的合并，有利于雹云进一步发展；作业后回波最大强度、30 dBZ回波顶高、CR≥45 dBZ回波面积等均明显减弱；作业后5 min，作业区平均雨量出现跃增现象。在雹云跃增阶段、移动方向前沿进行多点联合过量播撒作业，能起到良好的防雹效果。
中文关键词：
青海省东部农业区，人工防雹，联合作业
KeyWords：
eastern agricultural region of Qinghai Province, artificial hail prevention, joint operation
Abstract：
Study on the physical process of hail cloud development is of great significance for further understanding of hail cloud, summarizing the experience and improving the level of artificial hail prevention operation. Using Doppler radar data and MICAPS conventional observation data, a multi-point joint hail prevention case on 1 July 2020 in the eastern agricultural area of Qinghai Province is analyzed, from the aspects of synoptic situation, environmental conditions, echo evolution and effect inspection. The result shows that the combination of multiple convective cells on the radar chart is beneficial to the further development of hail clouds. After the operation, the maximum echo intensity, the 30 dBZ echo top height, and the CR≥45 dBZ echo area were significantly reduced; 5 minutes after the operation, the average rainfall in the operation area increased sharply. During the hail cloud development, the multi-point joint over-seeding operation in front of the moving direction will exert positive effect on hail prevention.