An all-sky meteor radar was set up in January 2002 in Wuhan and it is the first meteor radar in China. The characteristics of diurnal and semidiurnal tides over Wuhan from February 19 to July 31 are discussed in this paper. The main tidal component is diurnal tide which is much greater than the semidiurnal tide, and the sources of both tide components are below 80km. The diurnal tidal components reach their maximum in February and March, and the meridional components are stronger than the zonal components. Zonal and meridional diurnal tides reach their maximum of 44 m/s and 60 m/s at about 95 km, respectively. The semidiurnal tide reaches its maximun amplitude 24 m/s at about 93 km at the beginning of April. The amplitudes and phases of diurnal and semidiurnal tides show some quasi-periodic characteristics which may be resulted from nonlinear interaction between tides and planetary waves. The comparison of the observed tide and GSWM values shows that the variation of both diurnal and semidiurnal tidal phase with height is agreement. But the diurnal tidal phases of the GSWM are 1-2 hours ahead of the observed phases and the semidiurnal tidal phases of the GSWM are 1-4 hours lag of the observed phases. There are significant difference between GSWM tidal amplitudes and the observed amplitudes while the tides are strong. And the observed tidal amplitudes have maximum values at about 95km, but GSWM values have not maximum from 80 to 100km. The observed amplitudes of semidiurnal tide are generally greater than the GSWM amplitudes, as much as twise greater in some months.
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