Manifestation of the <i>β</i>-effect in the Black Sea two-layer model
The research is a continuation of a series of numerical experiments on modeling formation of wind currents and eddies in the Black Sea within the framework of a two-layer eddy-resolving model. The main attention is focused on studying the β -effect role. The stationary cyclonic wind is used as an external forcing and the bottom topography is not considered. It is shown that at the β -effect being taken into account, the Rossby waves propagating from east to west are observed during the currents’ formation and at the statistical equilibrium mode when the mesoscale eddies are formed. The waves with the parameters of the Rossby wave first barotropic mode for the closed basin are most clearly pronounced. Interaction of the Rossby waves with large-scale circulation results in intensification of the of the currents’ hydrodynamic instability and in formation of the mesoscale eddies. Significant decrease of kinetic and available potential energy as compared to the values obtained at the constant Coriolis parameter is also a consequence of the eddy formation intensification.