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RISModal Interpretation for the Ekman Destabilization of Inviscidly Stable Baroclinic Flow in the Phillips Model
Publisher: American Meteorological Society
Abstract: Ekman boundary layers can lead to the destabilization of baroclinic flow in the Phillips model that, in the absence of dissipation, is nonlinearly stable in the sense of Liapunov. It is shown that the Ekman-induced instability ...
Midlatitude–Equatorial Dynamics of a Grounded Deep Western Boundary Current. Part II: Cross-Equatorial Dynamics
Publisher: American Meteorological Society
Abstract: his is Part II of a two-part theoretical study into the midlatitude?cross-equatorial dynamics of a deep western boundary current (DWBC) in an idealized meridionally aligned, differentially rotating ocean basin with zonally ...
Midlatitude–Equatorial Dynamics of a Grounded Deep Western Boundary Current. Part I: Midlatitude Flow and the Transition to the Equatorial Region
Publisher: American Meteorological Society
Abstract: comprehensive theoretical study of the nonlinear hemispheric-scale midlatitude and cross-equatorial steady-state dynamics of a grounded deep western boundary current is given. The domain considered is an idealized ...
Ekman Layer Dissipation in an Eastward-Traveling Modon
Publisher: American Meteorological Society
Abstract: A perturbation solution for an eastward-traveling modon in the presence of a bottom Ekman boundary layer is presented. The modon radius, translation speed and wavenumber are allowed to be functions of a slow time and the ...
The Meridional Flow of Source-Driven Abyssal Currents in a Stratified Basin with Topography. Part II: Numerical Simulation
Publisher: American Meteorological Society
Abstract: A numerical simulation is described for source-driven abyssal currents in a 3660 km ? 3660 km stratified Northern Hemisphere basin with zonally varying topography. The model is the two-layer quasigeostrophic equations, ...
The Meridional Flow of Source-Driven Abyssal Currents in a Stratified Basin with Topography. Part I: Model Development and Dynamical Properties
Publisher: American Meteorological Society
Abstract: The equatorward flow of source-driven grounded deep western boundary currents within a stratified basin with variable topography is examined. The model is the two-layer quasigeostrophic (QG) equations, describing the ...
Geostrophic Scatter Diagrams and the Application of Quasigeostrophic Free-Mode Theory to a Northeast Pacific Blocking Episode
Publisher: American Meteorological Society
Abstract: Throughout the latter part of January and most of February 1989 a large-scale intense blocking event occurred over the northeast Pacific Ocean. During its lifetime the block exhibited two distinct spatial configurations ...
Two-Layer Models of Abyssal Equator-Crossing Flow
Publisher: American Meteorological Society
Abstract: The role of baroclinicity in the dynamics of abyssal equator-crossing flows is examined by studying two-layer models of the flow valid in the equatorial region. Three new analytical models are derived from two-layer ...
Eddy Formation and Interaction in a Baroclinic Frontal Geostrophic Model
Publisher: American Meteorological Society
Abstract: The authors investigate the behavior of buoyancy-driven coastal currents in a series of numerical experiments based on a two-layer frontal geostrophic model. The model focuses on baroclinic instability, allows for finite ...
Topographically-Induced Baroclinic Eddies near a Coastline, with Application to he Northeast Pacific
Publisher: American Meteorological Society
Abstract: A mathematical model is developed to describe the interaction between variable bottom topography and a steady, horizontally-sheared baroclinic coastal current. The topography modeled in this study consists of an offshore ...