Abstract: A parameterization of dynamical and thermal effects of orographic gravity waves (OGWs) has been included into the numerical model of the general atmospheric circulation of the middle and upper atmosphere. The sensitivity of mean meridional circulation to the impact of stationary OGW during the years with different quasi-biennial oscillation (QBO) phases at altitudes up to 100 km in January has been studied. The respective changes in vertical mean ozone fluxes in the atmosphere have been observed. The account of stationary OGW effects leads to the changes up to 40% in the meridional velocity and the associated ozone fluxes in the stratosphere. In the winters with the easterly and westerly QBO phases, the differences between the maximum meridional velocities in the middle atmosphere at the middle and high latitudes of the northern hemisphere can reach 60%.