Correlation Analysis of Lightning Activity and Radar Echo Characteristics of Thunderstorm under Different Underlying Surface
Based on the lightning detection and radar echo data,the CG (Cloud-to-Ground) lightning characteristics of three kinds of enhanced thunderstorms (namely downtown,hilly and coastal areas) on the three different underlying surfaces are investigated.Result shows that there exists relationship between the CG lightning frequency at 6 min intervals and the coverage of composite reflectivity and echo top for the three kinds of intensified thunderstorms.In the downtown areas,the CG lightning frequency at 6 min intervals is closely related to the coverage of the composite reflectivity above 50 dBz,and the coverage of echo top exceeding 9 km and 10 km respectively.In the hilly areas,the frequency is correlated with the coverage of the composite reflectivity above 45 dBz and the coverage of echo top exceeding 12 km,while in the hilly areas,there is obvious linear relation between the CG lightning frequency and the coverage of echo top exceeding 10 km,with correlation coefficient up to 0.916.The CG lightning characteristics in three kinds of the intensified thunderstorm are different,and more CG lightning happens in urban thunderstorms.
NETL
NSTL
万方数据
维普
