Analysis of the Relationship between Lightning and Charge Structures in Thundercloud Using Satellite Image and Radar Data
This paper calculates the intensity and distribution of the electric field at ground in the circumstances of different electrical structure and liquid-water content. Then we study the character of the satellite cloud figure and radar echo when the lightning happens. The results show that in condition that the amount of charges is average value and the altitude of the center of positive and negative charge is lower, the intensity of electric field at ground can achieve the critical value. It’ s easier to ge nerate CG when the upperwind shear gets stronger and the cirrus plume is more obvious. After the negative CG, the positive charges distribute at the plume, the intensity of electric field at ground under the center of negative charges and underneath the plume will be both get stronger. When there’s non-influence electrification, the more the liquid-water content, the more the amount of electrification. The distribution of lightning is accordance with the location of thundercloud in satellite figure and the severe radar echo.
Yizhou Yin Weimin Chen Zhaorong Li Xia Luo
Nanjing University of Information Science and Technology, Nanjing 210044 ,China Gansu Weather Modification Office,Lanzhou 730020,China
国际会议
第13届国际大气电学会议(The 13th International Conference on Atmospheric Electricity)
北京
英文
2007-08-13（万方平台首次上网日期，不代表论文的发表时间）