【摘要】 本文利用矩心跟踪法,对平凉雷达观测基地的C波段数字化雷达在1987,1988年的13次对流天气过程和一次飑线天气过程中的雷达资料进行了处理,并分析了在两种不同天气条件下,不同回波强度阈值、不同预报时间、不同时间间隔情况下,预报下一时刻对流云中心位置产生的误差,确定了适当的预报参量和预报精度。在此基础上,准备在雷达系统中引入天气跟踪、警戒系统,为防雹工作和防洪工作提供信息。更多还原

【Abstract】 Using the method of tracking echo centroids, we have analysed the C-band digital weather radar data observed during the events of thirteen isolated severe storms and one squall line weather in 1987 and 1988, and presented the main results in forecast application, including forecast errors of cloud centroids under different weather conditions and for different intensity thresholds or different forecast time periods, and finally determined the suitable forecast parameters and corresponding forecast accuracy. On the knowledge, we will further introduce this program of tracking and warning storms into our digital radar analysing system for applications of the hail suppression and the flood forecast.更多还原