HR: 11:50h
AN: OS52B-07    [Abstracts]
TI: A fully implicit formulation of a layered wind-driven ocean model with outcropping
AU: * Primeau, F W
EM: fprimeau@uci.edu
AF: Earth System Science, Univeristy of California, Irvine, Irvine, CA 92697-3100 United States
AU: Newman, D
EM: newman@uci.edu
AF: Earth System Science, Univeristy of California, Irvine, Irvine, CA 92697-3100 United States
AB: We have implemented an implicit solver for a layered formulation of the primitive equations. The advantage of the layered formulation is that there is no spurious diapycnal diffusivity due to the numerical representation of the advective terms. The numerical scheme is based on Hsu and Arakawa (1990) and allows isopycnic layers to outcrop at the surface. This makes it possible for us to explore solutions where the deeper layers are forced directly by the wind along their surface outcrop. The stationary solutions of the model are solved using an arc-length continuation approach based on Newton's method. Here we report some preliminary results about the bifurcations and stability of the ventilated thermocline as a function of the eddy-viscosity.
DE: 4500 OCEANOGRAPHY: PHYSICAL
DE: 4528 Fronts and jets
DE: 4576 Western boundary currents
DE: 3220 Nonlinear dynamics
DE: 1724 Ocean sciences
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting