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Eddy-induced upwelling off Cape São Tomé (22°S, Brazil)

2010; Elsevier BV; Volume: 30; Issue: 10-11 Linguagem: Inglês

10.1016/j.csr.2010.03.007

1873-6955

Leandro Calado, Ilson Carlos Almeida da Silveira, Avijit Gangopadhyay, Belmiro Mendes de Castro,

Geological formations and processes

The regional ocean off southeast Brazil (20°S–28°S) is known as a current-eddy-upwelling region. The proximity of the Brazil Current to the coast in the Cape São Tomé vicinities, as well as of its quasi-stationary unstable meanders, suggests the possibility of background eddy-induced upwelling. Such phenomenon can intensify the prevalent coastal upwelling due to wind and topographic effects. In this paper, with the help of a numerical simulation, we provide evidence that eddy-induced upwelling in the absence of wind is possible in this region. The simulation was conducted with a regional configuration of the 3-D Princeton Ocean Model initialized by a feature-based implementation of the Brazil Current and Cape Frio eddy, blended with climatology.