IMPLEMENTATION OF A NEW PARAMETRIZATION OF SHALLOW CONVECTION

G. V. Mostovoi

A theoretical background and a new scheme of shallow convection parametrization based on the Lagrangian description of small cumulus clouds are considered. A new parametrization permits one to take into account the main features of small cumulus clouds more adequately. The distinctions and advantages of the proposed scheme over the well-known shallow convection parametrization are analyzed. The results of numerical experiments with the new scheme in the spectral global atmospheric model of the Hydrometeorological Center of Russia are presented.