ON ATMOSPHERIC EXCITATION OF OUT-OF-PHASE NUTATIONAL COMPONENTS

A simple self-consistent model of thermal diurnal tides in the earth's atmosphere is constructed which gives the possibility to separate annual and semi-annual prograde and retrograde components. For a realistic model of the Earth the numericalestimationsofatmosphericexcitationofout-of-phase nutational components are obtained. It is shown that prograde annual component may be totally explained by thermal atmo- spheric tides; at the same time, the influence of these tides on retrograde annual component is negligible small.