由电离层电位所建立的大气电状态

本文在已知电离层电位分布下, 解析地计算了大气电位, 电场和电流强度的全球分布.结果表明, 在大气导电率随高度呈指数增加的情况下, 100km高度上的电离层电位, 几乎无衰减地扫到25km以下.大气电场较强的区域主要在20km以下的低层大气区, 其垂直分量比水平分量大4个数量级.而中高层大气电场较弱, 且两分量量级相当.本文还提出了一种考虑地面形状对大气电场影响的解析方法. 

Atmospheric Electric Property Produced by Ionospheric Potential

Global distribution of electric potential, fields and currents in the atmosphere are calculated analytically under a given ionospheric electric potential distribution. The results show that the electric potential of ionosphere at an altitude of 100 km can map down to lower than 25km without obvious attenuation in an atmospheric electric conductivity which increases exponentially with altitude. The region with strong electric field is mainly in the lower atmosphere with altitudes below 20km, where the vertical components are 4-orders of magnitude larger than the horizontal components. The electric fields in middle and upper atmosphere are relatively weak, and the vertical components are at the same order of magnitude as horizontal components. An analytic method is proposed to calculate the influence of topography on atmospheric electric field.