Some Features of Lightning Flashes Observed on Radar and Satellite Images in Northwestern China

摘要

In this paper, by using satellite, radar and cloud-to-ground (CG) lightning location data, researches have been conducted on the relation of the CG lightning in the thunderstorm cloud (thundercloud) to the radar echo intensity and the characteristics of the cloud system shown in the satellite cloud charts, and analyses have also been made on the relations of the thundercloud patterns, the liquid-water content in the cloud to the lightning. Results show that the more obvious the plume shown in the cloud chart is, the more possible it is for the CG lightning to occur, the positive charge concentrates on the plume, easily causing the positive CG lightning. The distribution of the liquid-water content which influences the amount of electrification in the cloud has also been analyzed.