Complex experimental investigation of atmospheric waves generated by the solar terminator

Waves generated by the solar terminator at altitudes from the troposphere to the ionosphere were investigated by a complex approach, i.e., one involving various methods, including lidar sounding, the registration of solar-radiation fluctuations, and vertical ionospheric sounding. It is shown that the spectrum, amplitude, and other characteristics of these waves depend on altitude, season, and time of day. The higher-frequency component of the spectrum predominates at sunrise, while a lower-frequency component predominates at sunset.