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Numerical Simulation of Flow around a Tall Isolated Seamount. Part I: Problem Formulation and Model Accuracy
Publisher: American Meteorological Society
Abstract: A sigma coordinate ocean circulation model is employed to study flow trapped to a tall seamount in a periodic f-plane channel. In Part I, errors arising from the pressure gradient formulation in the steep topography/strong ...
Effects of Variable and Anisotropic Diffusivities in a Steady-State Diffusion Model
Publisher: American Meteorological Society
Abstract: The hypothesis that variations in eddy diffusivity may account for some aspects of the observed distributions of oceanic scalars is examined by generating solutions to the diffusion equation with spatially variable and/or ...
Homogeneous Quasi-Geostrophic Turbulence Driven by a Uniform Temperature Gradient
Publisher: American Meteorological Society
Abstract: Statistically steady states consistent with a horizontally uniform time-averaged temperature gradient in a two-layer quasi-geostrophic model on a beta-plane are found by numerically integrating the equations for deviations ...
The Stability of Ocean Currents in Eddy-Resolving General Circulation Models
Publisher: American Meteorological Society
Abstract: The stability of currents generated in an oceanic eddy-resolving general circulation model EGCM (Holland, 1978) is investigated by solving the eigenvalue problem associated with the finite-difference quasi-geostrophic ...
Phenomenology of the Low-Frequency Variability in a Reduced-Gravity, Quasigeostrophic Double-Gyre Model
Publisher: American Meteorological Society
Abstract: The low-frequency variability of the oceanic wind-driven circulation is investigated by use of a reduced-gravity, quasigeostrophic model with slight variations on the classic double-gyre wind forcing. Approximately 30 ...
On the Vacillation of an Unstable Baroclinic Wave Field in an Eddy-Resolving Model of the Oceanic General Circulation
Publisher: American Meteorological Society
Abstract: The vacillation of baroclinically unstable waves in a two-layer eddy-resolving oceanic circulation model is described. The vacillation cycle is distinguished kinematically by the mutual coexistence at equilibrium of short ...
Model Studies of the Wind-Driven Transient Circulation in the Middle Atlantic Bight. Part 1: Adiabatic Boundary Conditions
Publisher: American Meteorological Society
Abstract: A numerical model of the wind-driven transient ocean circulation in the Middle Atlantic Bight is described. The model incorporates realistic topography and covers the continental shelf between the coast and the 200 m isobath ...
Low-Resolution Numerical Simulation of Decaying Two-Dimensional Turbulence
Publisher: American Meteorological Society
Abstract: Numerical simulations of two-dimensional turbulence show that O(??1) and O(??4) energy spectra?described by Fox and Orszag (1973a) as enstrophy-equipartitioning and strongly dissipating turbulence, respectively?occur ...
Summer Circulation and Temperature Structure of Lake Kinneret
Publisher: American Meteorological Society
Abstract: A three-dimensional lake model driven by wind stress and heat flux fields derived from an atmospheric model is applied to Lake Kinneret, Israel. The summer wind field over the lake has a strong diurnal and large spatial ...
Subinertial Response of a Density-Driven Eastern Boundary Poleward Current to Wind Forcing
Publisher: American Meteorological Society
Abstract: A high-resolution primitive equation numerical model is used to generate a poleward flow along a meridionally oriented eastern boundary slope/shelf system by imposing an along-coast density gradient as the forcing mechanism. ...