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Dynamic Boundary Conditions Revisited

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  • 1 Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California
  • | 2 Istituto Nazionale di Oceanografia e di Geofisica Sperimentale–OGS, Trieste, Italy
  • | 3 Istituto Talassografico del CNR, Trieste, Italy
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Abstract

The applicability of the super-slip boundary condition in wind-driven quasigeostrophic ocean circulation models is reexamined. The energy and enstrophy characteristics of the super-slip condition are discussed for the equilibrium state. A model is constructed with super-slip on the western boundary and free slip on the other boundaries. Both linear and nonlinear solutions are presented. Compared to the case with all free-slip boundaries, this new model gives a more energetic and narrower western boundary current, but otherwise the differences are not very great.

Corresponding author address: Dr. George F. Carnevale, Scripps Institution of Oceanography, 0213, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093.Email: gfc@castor.ucsd.edu

Abstract

The applicability of the super-slip boundary condition in wind-driven quasigeostrophic ocean circulation models is reexamined. The energy and enstrophy characteristics of the super-slip condition are discussed for the equilibrium state. A model is constructed with super-slip on the western boundary and free slip on the other boundaries. Both linear and nonlinear solutions are presented. Compared to the case with all free-slip boundaries, this new model gives a more energetic and narrower western boundary current, but otherwise the differences are not very great.

Corresponding author address: Dr. George F. Carnevale, Scripps Institution of Oceanography, 0213, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093.Email: gfc@castor.ucsd.edu

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