THE UPPER MESOSPHERE AND LOWER THERMOSPHERE WIND-FIELD OVER CENTRAL-EUROPE FROM 1994 THROUGH 1996 OBTAINED FROM A JOINT ANALYSIS OF LF WINDPROFILER AND MF RADAR MEASUREMENTS

The mesopause region wind field over Central Europe has been continual ly recorded by daily low-frequency total reflection wind measurements using commercial radio transmitters at the Collm Observatory of the Un iversity of Leipzig, and by medium-frequency radar wind measurements o n 3.18 MHz at the Juliusruh measuring station of the Institute of Atmo spheric Physics, Kuhlungsborn, Germany. These observations provide the horizontal prevailing wind and the tidal wind components and are usef ul both for monitoring the upper atmospheric circulation as well as fo r investigations with respect to upper middle atmosphere climatology. Vertical profiles of the wind field parameters can be derived with the aid of combined wind and reflection height measurements. Here height- time cross-sections of half-monthly mean prevailing winds and the semi diurnal tidal wind of the years 1994 through 1996 are presented.