An Analysis of the Initial Stage of Intracloud Lightning in the Chinese Inland Plateau
Multi-station observation on lightning flashes in the Chinese Inland Plateau area was conducted in the summer of 2004 by using fast antenna, slow antenna and field mill. The high time-resolution GPS was used to synchronize the signals from each station. The result shows that the thunderstorms in Zhong-chuan( Zh-Ch) area were small and weak convective cells with low flash rate and usually occurred from 13:00 to 22:00 LT. With the time of arrival lightning radiation detection system, the initial stage of five in-tracloud( IC) lightning discharges were analyzed in this paper. The results indicate that the radiation sources heights of the initial breakdown ranged from 3 to 5km above ground, starting from the negative charge re-gion in the middle part of the cloud, and developing downward to the lower positive charge region. Com-pared with the simultaneous Doppler radar observations, it is clear that the lightning discharges occurred in the regions of high radar reflectivity ranging from 20dBz to 50dBz.
Dongfang Wang Xiushu Qie Tie Yuan Guangshu Zhang Tong Zhang Tinglong Zhang Qilin Zhang
Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,
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）