Diurnal variation of gravity wave momentum flux and its forcing on the diurnal tide

摘要: [1] The diurnal variation of gravity wave (GW) momentum flux is derived from the 5 years meteor radar wind measurements at Maui, Hawaii. The amplitude and phase relationships between GW forcing tide are analyzed by calculating their equivalent Rayleigh frictions. results show that clearly modulated tide. convergence has strong effects on both They can reach 80 ms − 1 day for 15 h phase. tends to increase above 90 km but a small damping effect below km. It throughout all altitudes. Seasonal variations exist, which result in differences magnitudes agreement with recent satellite observations much larger than values used general circulation models. This work also demonstrates provide valuable data set study GW-tide interactions.