一次冰雹天气过程的两块雹云防雹效果对比分析

Comparative Analysis of Two Hail Suppression Effect of a Hail Process

利用CPAS系统中的雷达资料,结合探空资料和冰雹资料,分析了2015年5月17日一次冰雹天气过程的两块冰雹云在不同路径生命周期相同的情况下作业前、中、后的回波特征。结果发现:条件性不稳定和较大的垂直风切变指示当天有利的降雹环境。对雹云A实施防雹作业一次,45 d Bz顶部高度降低至少5 km,60 d Bz以上的强回波面积减少了39.3%,最大回波强度减少10 d Bz,云体加宽、减弱。对雹云B实施防雹作业两次,作业后45 d Bz顶部高度降到6 km以下,60 d Bz以上的回波面积为0,有弱回波生成,云体分裂。两块雹云人工防雹作业有效。

In combination with the radiosonde data and hail data,the radar data in the CPAS system was used to analyze the echo characteristics of two hail cloud under the condition of the same life cycle in different paths before the implementation,in the implementation and after the implementation of hail suppression during a hail weather process. The results show that the conditional instability and larger vertical wind shear indicate the favorable environment of the hailing weather. An implementation of hail suppression to the hail cloud A,45 dbz top height decreased at least by 5 km,the strong echo area above 60 dbz decreased by 39. 3%. The maximum echo intensity decreases 10 dbz,and the cloud body widened and weakened. Hail suppression to the hail cloud B was implemented two twice,after the implementation,45 dbz top height was less than 6 km,the strong echo area above 60 dbz was zero. Weak echo occurred,cloud body shattered. The maximum echo intensity decreases 10 dbz,and the cloud body widened and weakened. The hail suppressions to two hail clouds were effective.