THE SOUTH-ATLANTIC IN THE FINE-RESOLUTION ANTARCTIC MODEL

The geographical area covered by the Fine-Resolution Antarctic Model ( FRAM) includes that part of the South Atlantic south of 24-degrees-S. A description of the dynamics and thermodynamics of this region of the model is presented. Both the mean and eddy fields in the model are in good agreement with reality, although the magnitude of the transients is somewhat reduced. The heat flux is northward and in broad agreemen t with many other estimates. Agulhas eddies are formed by the model an d propagate westward into the Atlantic providing a mechanism for fluxi ng heat from the Indian Ocean. The confluence of the Brazil and Falkla nd currents produces a strong front and a large amount of mesoscale ac tivity. In the less stratified regions to the south, topographic steer ing of the Antarctic circumpolar current is important.