| | P2.1 | The semiannual oscillation of diurnal tides in the mesosphere and lower thermosphere and their dependence on forcing and wind coupling processes Norbert Grieger, Leibniz-Institute of Atmospheric Physics, Kuehlungsborn, Germany, Ostseebad Kuehlungsborn, Germany; and G. Schmitz, U. Achatz, E. Becker, and H. Schmidt |