基于动态模板函数的线状中尺度对流系统自动识别

摘要

在中尺度对流系统（mesoscale convective systems，MCSs）自动识别、跟踪基础上，根据拟合椭圆长轴设计动态模板和得分函数，完成了雷达拼图资料上的线状 MCSs自动识别。并利用不同类型中尺度天气过程对算法进行检验，分析结果表明：（1）算法能够实现对线状 MCSs的自动识别，由于对流系统分裂与合并造成的回波形态“突变”，得分值结果能得到较好的反映；（2）算法能够实现对线状 MCSs天气的跟踪，一般情况下跟踪效果较好，在分裂或者合并发生的时刻跟踪效果较差。%Based on automatic identification and tracking MCSs (mesoscale convective systems),long axis of MCSs was used to design dynamic templet and score function in order to complete the algorithm for au-tomatically identifying linear MCSs.The performance of the algorithm is evaluated by applying in several different types of convection cases.The results demonstrate that the algorithm can automatically identify linear MCSs and behave well,even the convective system change rapidly as a result of splitting or mer-ging.The algorithm can track linear MCSs system normally well,but when splitting or merging occurs it can not do so well.