| Summary: | . Recent advances in computer architecture allow for numerical integration of state-of-the-art ocean models at basin scale with a grid resolution of 1=10 o or higher. At that resolution, the Gulf Stream's separation at Cape Hatteras is well simulated, but substantial differences from observations are still observed in its path, strength, and variability. The results of several high resolution North Atlantic simulations are discussed as functions of the models' architecture and subgridscale dissipation operators. These results suggest that, even with such a fine grid spacing, the subgridscale parameterization choice is of importance for the large scale circulation. Introduction Until recently, most ocean general circulation models (OGCMs) had great difficulties in reproducing the basic pattern of the Gulf Stream. The modeled Gulf Streams had in general the tendency to separate far north of Cape Hatteras and to form a large stationary anticyclonic eddy at the separation latitude (see.
|
|---|