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Effects of Horizontal Advection on Upper Ocean Mixing: A Case of Frontogenesis
Publisher: American Meteorological Society
Abstract: The wind stress on the ocean surface induces horizontal advection and vertical mixing, two mechanisms which are capable of changing the surface water density. Advection and mixing can enhance or partially destroy the effects ...
Frontal Geostrophic Dynamics
Publisher: American Meteorological Society
Abstract: From the primitive equations simplified dynamics are derived that apply to frontal situations in which interface slopes are important. The formalism, which eliminates inertial motions, is not Unlike the derivation of the ...
On the Role of Heat Flux in the Gulf Stream-Sargasso Sea Subtropical Gyre System
Publisher: American Meteorological Society
Abstract: In contrast with the traditional view of midlatitude circulation driven by winds in the ocean interior and regulated by friction along the western boundary, it is hypothesized that some control can be attributed to surface ...
On the Role of Filamentation in the Merging of Anticyclonic Lenses
Publisher: American Meteorological Society
Abstract: It has been previously noted that, if two warm-core rings were to merge to form a single new eddy, there would be more energy in the final state than in the initial, premerging state, and that therefore, merging is ...
On the Maintenance of the Subtropical Front and its Associated Countercurrent
Publisher: American Meteorological Society
Abstract: In the North Pacific and Atlantic Oceans, the Subtropical Countercurrent is an eastward flow across the Subtropical Gyre at a latitude where a classical wind-driven circulation theory would predict a westward flow. It is ...
Two-Layer Geostrophic Dynamics. Part II: Geostrophic Turbulence
Publisher: American Meteorological Society
Abstract: In Part I of this series, generalized geostrophic equations were formulated for the two-layer system on a beta plane and over a flat bottom. Here numerical experiments with these equations are carried out to study freely ...
Bottom Ekman Pumping with Stress-Dependent Eddy Viscosity
Publisher: American Meteorological Society
Abstract: This paper reconsiders the classic problem of bottom Ekman pumping below a steady geostrophic flow by relaxing the assumption of a constant eddy viscosity. It is assumed instead that the eddy viscosity depends on the ...
On the Influence of a Lower Layer on the Propagation of Nonlinear Oceanic Eddies
Publisher: American Meteorological Society
Abstract: The one-layer, reduced-gravity, also called equivalent-barotropic, model has been widely used in countless applications. Although its validity is based on the assumption that a second, lower layer is sufficiently deep to ...
A General Theory for Equivalent Barotropic Thin Jets
Publisher: American Meteorological Society
Abstract: The so-called thin-jet approximation, in which variations along the jet axis are assumed gradual in comparison with variations normal to the axis, allows the calculations of along- and cross-axis structures to be decoupled. ...