MODELING OF OZONE REDUCTION BY STRATOSPHERIC AIRCRAFT

Using a two-dimensional model of the atmospheric circulation and composition, different scenarios of the effects of stratospheric aircraft on ozone layer destruction were calculated. It is shown that the ozone loss depends strongly on the altitude and composition of engine emissions from high-speed civil transport aircraft. The inclusion in the two-dimensional model of the effects of chemical eddies results in significantly reduced ozone losses in the high latitudes of the northern hemisphere during wintertime. when the dynamics of the stratosphere are strongly disturbed by planetary waves. This result can be connected with the increase of stratosphere/troposphere exchange.