72-hr Baroclinic Forecast by the Diabatic Quasi-Geostrophic Model

Abstract

By making use of 4-level quasi-geostrophic model, the numerical forecasts over the period of 72-hrs are examined. In this model, the effects of the latent heat release due to the condensation and also the transport of sensible heat between the ocean and the atmosphere are taken into consideration.
In order to avoid the truncation error in the finite-difference equations of the vorticity equation and the thermodynamic equation, we use the special computational scheme.
The result of numerical forecasts shows that the diabatic model mentioned above represents the atmospheric motion pretty well. The statistical results of the forecast are compared with those of adiabatic model during the period over 1962-1964.