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Fluid Exchange across a Meandering Jet
Publisher: American Meteorological Society
Abstract: The motion of fluid parcels in a two-dimensional kinematic model of a meandering jet is investigated using Melnikov's method. The study is motivated by a recent analysis of float trajectories in the Gulf Stream. The results ...
Supercritical Marine-Layer Flow along a Smoothly Varying Coastline
Publisher: American Meteorological Society
Abstract: A model for hydraulically supercritical atmospheric marine-layer flow along a smoothly varying coastline is formulated and solved numerically. The model is motivated by a recent comparison of CODE observations to a simple ...
Periodic Orbits and Disturbance Growth for Baroclinic Waves
Publisher: American Meteorological Society
Abstract: The growth of linear disturbances to stable and unstable time-periodic basic states is analyzed in an asymptotic model of weakly nonlinear, baroclinic wave?mean interaction. In this model, an ordinary differential equation ...
A Simple Dynamical Model of the Warm-Water Branch of the Middepth Meridional Overturning Cell
Publisher: American Meteorological Society
Abstract: A reduced-gravity model is presented of the warm-water branch of the middepth meridional overturning circulation in a rectangular basin with a circumpolar connection. The model describes the balance between production of ...
Coastal Boundary Conditions and the Baroclinic Structure of Wind-Driven Continental Shelf Currents
Publisher: American Meteorological Society
Abstract: The generation of continental shelf currents by wind forcing is investigated by analytical and numerical methods. The investigation is motivated by observations from the Coastal Ocean Dynamics Experiment. A central assumption ...
Internal Boundary Layer Scaling in “Two Layer” Solutions of the Thermocline Equations
Publisher: American Meteorological Society
Abstract: The diffusivity dependence of internal boundary layers in solutions of the continuously stratified, diffusive thermocline equations is revisited. If a solution exists that approaches a two-layer solution of the ideal ...
Geostrophic Circulation in a Rectangular Basin with a Circumpolar Connection
Publisher: American Meteorological Society
Abstract: A simple theory is presented for steady geostrophic circulation of a stratified fluid in a rectangular basin with a circumpolar connection. The interior flow obeys the ?-plane Sverdrup vorticity balance, and the circulation ...
The Vertical Structure of Linear Coastal-Trapped Disturbances
Publisher: American Meteorological Society
Abstract: The vertical structure of coastal-trapped disturbances in several idealized models of a stably stratified lower atmosphere is examined. The vertical structure and phase speeds of the trapped modes depend on the resting ...
Simple Mechanistic Models of Middepth Meridional Overturning
Publisher: American Meteorological Society
Abstract: Two idealized, three-dimensional, analytical models of middepth meridional overturning in a basin with a Southern Hemisphere circumpolar connection are described. In the first, the overturning circulation can be understood ...
Time-Dependent Adjustment in a Simple Model of the Mid-Depth Meridional Overturning Cell
Publisher: American Meteorological Society
Abstract: recently proposed reduced-gravity model of the warm-water branch of the middepth meridional overturning circulation in a rectangular basin with a circumpolar connection is extended to include time dependence. The model ...