Gravity wave feedback effects on the diurnal migrating tide Original Research Article

Previous studies have suggested the interaction of gravity waves with the diurnal tide could account for some of the semiannual variation observed in the mesosphere and lower thermosphere. This study investigates these effects using the JHU/APL spectral tidal model and a new parameterization scheme for gravity wave induced heating. Further effects on the tides are also examined using diurnal chemical heating from the JHU/APL coupled 2D chemical-dynamical model. Of these processes, gravity wave driven eddy diffusion is found to produce the largest variations in the diurnal tides.