Effects of gravity waves on the distributions Of O-3 and OH in the mesopause region

A dynamical-photochemical model of atmospheric gravity waves is used to stu dy the influences of gravity waves on distributions of atmospheric minor sp ecies through transportation and photochemical reactions. We mainly study t he effect of gravity waves on the distributions of atmospheric trace gases through the nonlinear photochemical reactions. O-3 and OH are taken as exam ples in this note. The calculations indicate that the effect of gravity wav es on the distributions of atmospheric trace gases is mainly through the no nlinear photochemical reactions in the mesopause region. The contribution o f the nonlinear photochemical reaction caused by gravity waves can exceed t he nonlinear transportation and the eddy diffusion.