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On the Transport and Angular Momentum Balance of Channel Models of the Antarctic Circumpolar Current
Publisher: American Meteorological Society
Abstract: Angular momentum balances are discussed, both in general as well as in the context of simple channel models of the Antarctic Circumpolar Current (ACC). Particular emphasis is placed on the close relationship between the ...
Instability of 2D Flows to Hydrostatic 3D Perturbations
Publisher: American Meteorological Society
Abstract: Considered here is the evolution of three-dimensional perturbations to the hydrostatic equations linearized about a two-dimensional base state U. Motivated by an argument by T. Warn, this study begins with the nonrotating, ...
Simple Models of Flow over Deep Ocean Sills: Planetary and Semigeostrophic Solutions
Publisher: American Meteorological Society
Abstract: Simple inverted reduced-gravity models of flow over deep ocean sills are considered, with emphasis placed on the case for which sills are wide with respect to the abyssal Rossby radius. When the length scale of the flow ...
Near-Inertial Oscillations and the Damping of Midlatitude Gyres: A Modeling Study
Publisher: American Meteorological Society
Abstract: The classic wind-driven double-gyre problem for a homogeneous (unstratified) thin aspect ratio fluid is considered, but allowing for the flow to be depth dependent. Linear free modes for which the vertical wavenumber kz ? ...
Basin and Channel Contributions to a Model Antarctic Circumpolar Current
Publisher: American Meteorological Society
Abstract: The idea that basinlike dynamics may play a major role in determining the Antarctic Circumpolar Current (ACC) transport is revisited. A simple analytic model is developed to describe the relationship between the wind stress ...
Influence of Wind Stress, Wind Stress Curl, and Bottom Friction on the Transport of a Model Antarctic Circumpolar Current
Publisher: American Meteorological Society
Abstract: ddy-permitting simulations of a wind-driven quasigeostrophic model in an idealized Southern Ocean setting are used to attempt to describe what sets the wind-driven circumpolar transport of the Antarctic Circumpolar Current ...
Energy Fluxes in the Quasigeostrophic Double Gyre Problem
Publisher: American Meteorological Society
Abstract: he classic baroclinic, wind-driven, double gyre problem is considered over a range of deformation radii, wind stress amplitudes, and bottom friction coefficients with the aim of better understanding the transfer of energy ...
Meridional Motion of Mixing Eddies
Publisher: American Meteorological Society
Abstract: A two-layer model of anticyclonic eddy propagation including the effects of diapycnal mixing is presented. The lower layer is assumed to be of finite volume, whereas the upper layer is infinite in horizontal extent, and ...
Wind Stress Dependence on Ocean Surface Velocity: Implications for Mechanical Energy Input to Ocean Circulation
Publisher: American Meteorological Society
Abstract: It is pointed out that accounting for an ocean surface velocity dependence in the wind stress τ can lead to a significant reduction in the rate at which winds input mechanical energy to the geostrophic circulation. ...
On Boussinesq Dynamics near the Tropopause
Publisher: American Meteorological Society
Abstract: AbstractThe near-tropopause energy spectrum closely follows a ?5/3 power law at mesoscales. Most theories addressing the mesoscale spectrum assume unbalanced dynamics but ignore the tropopause (near which the bulk of the ...