用T213物理量场和相似性原理作暴雨判别预报

The discriminate prediction on rainstorm using the physical amounts of T213 and the principle of similarity

本文利用T213数值预报产品的格点资料,采用域块距离法,选取与暴雨密切相关的反映大气动力和热力过程的多个物理量,着眼于分析各个不同时次诸多因子的演变特征是否与暴雨出现的过程相似,作出预报区域内有无暴雨的定性预报,在强降水的预报中发挥了效用。

Using the grid data of T213 and the method of field distance, this paper chose several physical amounts reflecting the atmospheric dynamic and thermal processes associated with the rainstorm. It also analyzed whether the evolving features of factors at different time are similar to those of the occurrence of rainstorms, and predicted qualitatively the rainstorm in the predicting region, therefore, it played a role in the prediction of rainstorm.