A New Model of Solar Illumination of Earth’s Atmosphere during Night-Time

In this work, a solar illumination model of the Earth’s atmosphere is developed. The developed allows us to determine with extreme accuracy how atmospheric varies during night hours on global scale. This time-dependent variation in causes series sudden changes entire Earth-atmosphere-ionosphere system considerable interest for various research sectors and applications related climate change, ionospheric disturbances, navigation positioning systems. use proposed calculate Solar Terminator Height (STH) at scale also presented.Time-dependent STH impact measurements Total Electron Content (TEC) is, first time, investigated basis 20 years long time GPS-based collected ground. correlation analysis, performed post-sunset hours, new insights into dependence TEC–STH relation different periods (seasons) observation activity conditions.