MODELING THE DIURNAL TIDE WITH DISSIPATION DERIVED FROM UARS HRDI MEASUREMENTS/

This payer uses dissipation values derived from UARS/HRDI observations in a recently published diurnal-tide model. These model structures co mpare quite well with the UARS/HRDI observations with respect to the a nnual variation of the diurnal tidal amplitudes and the size of the am plitudes themselves. It is suggested that the annual variation of atmo spheric dissipation in the mesosphere-lower thermosphere is a major co ntrolling factor in determining the annual variation of the diurnal ti de.