A discussion on D and E region winds over Europe - The significance and interpretation of ionospheric drift measurements in the low-frequency range

Abstract

Ionospheric drift measurements in the low-frequency range can be shown by comparison with corresponding radar-meteor wind measurements to indicate, in general, very nearly the actual neutral air wind in the 90 to 100 km height region. From m any years of such measurements at two stations in the Germ an Democratic Republic, results have been obtained on both the prevailing and the semidiurnal (tidal) wind components, their seasonal variations, their dependence on the solar cycle and their anomalies during certain major mid-winter stratospheric warmings.