A steady azimuthal stratified flow modelling the Antarctic Circumpolar Current
We investigate steady flow moving purely in the azimuthal direction on rotating sphere and having a meridionally localized jet structure. An exact solution for a stratified invicsid fluid, which admits a depth-dependent velocity profile below the surface, is constructed in spherical coordinates. This soluton is relevant to the modelling of the Antarctic Circumpolar Current. We show that the stratification enables us to dispense with the nonconservative body force that was invoked in recent spherical-coordinate models to produce realistic flow profiles.