关键词: 多普勒雷达, 风暴体识别, 临近预报, 强天气预警

Abstract: 3-D clustering technique is the fundamental part of storm identification. One shortcoming of the clustering technique is that the connection area between adjacent storms may cause the problem of false merger. To surmount this difficulty, a special erosion operation is used. Instead of the constant convolution mask, it uses a dynamic convolution mask which depends on the reflectivity distribution of the storm boundary. The results of the experiment show that this method can successfully recognize false merger. These advantages result in better forecast evaluation scores.

Key words: Doppler radar, storm identification, nowcasting, severe weather warning