一次强对流天气的多普勒特征分析

Analyses of Doppler Features of a Heavy Storm

利用天气图、卫星云图和 5cm多普勒天气雷达的资料 ,详细分析了一次强对流天气的环流背景、回波发展演变过程和多普勒特征及其风场结构 ;初步分析了强对流天气的发生与下垫面地理特征之间的密切关系。

The atomospheric circulution background, echo evolution, wind field structure and Doppler feature of a heavy strom were analysed with weather map, satellite cloud photograph and the 5 cm Doppler radar data. It was discussed preminarily that the occurance of the heavy strom was closed related to the geographical features of underlying surface. The research on the detective method was conducted initially for a heavy strom by means of Doppler radar. The conditions are described which is useful to hailstorm development and hail growing according to the radial divergence and wind field derived by radial velocity. The result shows that the heavy hailstorm is frequently occur in the overlapping area of the largest radial velocity and intensity.