NUMERICAL-SIMULATION OF A COUPLED CIRCULA TION OF THE ATMOSPHERE AND UPPER LAYER OF THE OCEAN

The problem of atmosphere-ocean interaction in the middle latitudes is discussed. The description of the model of general circulation of the atmosphere, developed in the Institute of Numerical Mathematics of Ru ssian Academy of Sciences, is given. The quality of this model with re gard to simulation of the mean-January circulation is shown. The model of the upper layer of the ocean is formulated and results of simulati ons for the winter regime in the North Atlantic are presented. A metho d of coupling the atmospheric and oceanic blocks is described. The mod el is used for simulations of a January low-frequency variability of t he Atlantic ocean surface temperature and of dynamical characteristics of the atmospheric circulation. On the basis of results of numerical experiments and of comparison with observed data an analysis of the ro le of the ocean with regard to simulation of quasi-regimes of the atmo spheric circulation is given.