Development of the Multiscale Version of the SL-AV Global Atmosphere Model

M. A. Tolstykh, J.-F. Geleyn, E. M. Volodin, N. N. Bogoslovskii, R. M. Vilfand, D. B. Kiktev, T. V. Krasjuk, S. V. Kostrykin, V. G. Mizyak, R. Yu. Fadeev, V. V. Shashkin, b, A. V. Shlyaeva, I. N. Ezau, A. Yu. Yurova

The global hydrodynamic atmosphere model SL-AV is applied for operational medium- range weather forecast and as a component of the probabilistic long-range forecast system. The review of the previous development of the model is presented and the model features are noted. The existing model versions are described. The unified multi-scale version of the model is developed on the basis of these versions. This version is intended both for numerical weather prediction and for modeling of climate changes. The numerical experiments on climate modeling with the developed multi-scale version are carried out according to the protocol of the international AMIP2 experiment. First results are presented. The possibility of application of the unified version of the SL-AV model for the medium-range weather forecast, and, after some development, for modeling of climate changes is shown.