Abstract: The annual cycle of the zonally averaged circulation in the middle atmosphere (16?96 km) is simulated using; a severely truncated semi-spectral numerical model. The model includes only a single zonal harmonic wave component ...

Abstract: An infrared radiative heating and cooling algorithm designed to be used with dynamical models of the middle atmosphere is described. A Curtis matrix is used to compute cooling by the 15 and 10 ?m bands of carbon dioxide. ...