Height and time dependence of the dynamics of the mid - Latitude upper mesosphere-lower thermosphere deduced from radiometeor measurements in Kazan (56° N, 49° E) during 1986-1995

A homogeneous series of radiometeor observations in the height interval of 80-110 km obtained during 1986-1995 at the Eastern European mid-latitude station of - Kazan (56° N, 49° E) has been used to determine the height structure of parameters of prevailing and tidal movements of the zonal and meridional circulation, their inter-annual, annual, semi-annual oscillations and several-year averages; height and seasonal structures of wave disturbances of prevailing circulation with time scales of planetary waves; investment of long-period internal gravity waves in prevailing circulation was evaluated. The influence of solar cycle activity on dynamics has also been determined. © 1999 COSPAR. Published by Elsevier Science Ltd