The role of mesoscale oceanic eddies in driving large-scale currents is studied in an eddy-
resolving midlatitude double-gyre ocean model. The reference solution is decomposed into …

Nonlinear rectification of the ocean circulation driven by random forcing, which simulates the
effect of unresolved eddies, is studied in an idealized closed basin. The results are based on …

A simplified thermodynamic approach of the incompressible 2D Euler equation is
considered based on the conservation of energy, circulation and microscopic enstrophy …

Multiscale asymptotics are used to derive three systems of equations connecting the
planetary geostrophic (PG) equations for gyre-scale flow to a quasigeostrophic (QG) …

The problem of forced, geostrophic turbulence in a basin is revisited. The primary focus is
the time dependent field, which is shown to be approximately isotropic (in contrast to the …

The quasi-geostrophic model is a simplified geophysical fluid model at asymptotically high
rotation rate or at small Rossby number. We consider the quasi-geostrophic equation with …

We investigate the ergodicity of 2D large scale quasigeostrophic flows under random wind
forcing. We show that the quasigeostrophic flows are ergodic under suitable conditions on …

As the importance of stochastic forcing to the interdecadal variability in the ocean and
atmosphere becomes more widely appreciated, numerical stochastic modeling becomes …

This paper studies the effects of time-dependent, mesoscale turbulence on the wind-driven
ocean circulation in a closed basin with variable topography. Numerical simulations of a …

We study the minimization of potential enstrophy at fixed circulation and energy in an
oceanic basin with arbitrary topography. For illustration, we consider a rectangular basin …