For a few typical synoptic situations, vertical velocity is computed by quasi-geostrophic omega equation. The latent heat of condensation and sensible heat flux are parameterized in a way similar to the one used in operational quasi-geostrophic baroclinic model of Japan Meteorological Agency. Vertical velocities due to additional diabatic forcings are also computed separately.

It is found that the inclusion of latent heat of condensation further enhances the ascending adiabatic vertical velocities. The role of sensible heat flux, in quasi-geostrophic omega equation, does not seem to be of considerable importance unless the sea surface is warmer than the overlying air by about 10°C.