关键词: ADTD, 下垫面, 闪电特征, 湖北省

Abstract: Using the lightning data in Hubei province meteorological department layout ADTD system to record the lightning location system laying,the difference of the surface features of lightning in the Jianghan Plain,Tianmen,Xiantao,Qianjiang three cities underlying surface and near the suburban plain are analyzed,in order to explain the influence of city and plain under different surface conditions on the characteristics of lightning.The results show thatIn the same atmospheric circulation background,the correlation coefficient of simultaneous lightning between urban and plain underlying surface is higher,because the proportion of local lightning generated by underlying surface characteristics is lower;The proportion of positive lightning of city underlying surface is higher than that of flash plain surface,but the average amplitude of positive lightning is low,inversely related;City underlying surface lightning amplitude distribution is more concentrated,mainly in 20~35 kA;Compared with the plain underlying surface,the average amplitude of lightning current is 0.91 kA higher,the median cumulative probability of lightning current is 0.90 kA higher,and the urban underlying surface of lightning current over 60.0 kA is also more.

Key words: ADTD, underlying surface, lightning characteristics, Hubei province