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Representing Topographic Stress for Large-Scale Ocean Models
Publisher: American Meteorological Society
Abstract: Interaction of eddies with seafloor topography can exert enormous, systematic forces on the ocean circulation. This interaction has been considered previously under idealized circumstances. Theoretical results are here ...
A Spectral Theory of Nonlinear Barotropic Motion above Irregular Topography
Publisher: American Meteorological Society
Abstract: If a field of randomly distributed barotropic eddies interacts with underlying topographic features in a rotating reference frame, the flow is observed to develop, after a time the order of an eddy turnaround time τeddy = ...
Eddy Transport of Thickness and Momentum in Layer and Level Models
Publisher: American Meteorological Society
Abstract: The relation between thickness diffusion in layer and level models is set out. Parameterizations of thickness diffusion are related to a parameterization of eddy effects on momentum. The author anticipates where these ...
Oceanic Internal Waves Are Not Weak Waves
Publisher: American Meteorological Society
Abstract: It is shown that the oceanic internal wave field is too energetic by roughly two orders of magnitude to be treated theoretically as an assemblage of weakly interacting waves. This may be seen both from recent weak wave ...
Effects of Planetary Wave Propagation and Finite Depth on the Predictability of Atmospheres
Publisher: American Meteorological Society
Abstract: Theoretical predictability of the atmosphere is limited in part by the rate at which small-scale observational errors in the initiation of a forecast grow both in amplitude and in length scale with increasing time. Processes ...
Considerations on the Theory of Temperature spectra in Stably Stratified Turbulence
Publisher: American Meteorological Society
Abstract: In a recent note, Weinstock reconsiders an argument advanced twenty years earlier by Phillips concerning the buoyancy subrange theory of Lumley. Phillips pointed out that Lumley's theory ought to predict a certain form for ...
On Interaction Time Scales of Oceanic Internal Waves
Publisher: American Meteorological Society
Abstract: When applied to oceanic internal waves of observed amplitudes, a class of weak wave-wave interaction theories predict certain very rapid interactions, contradicting the theoretical premise. It has been suggested that the ...
Intransitive Multiple Equilibria in Eddy-Active Barotropic Flows
Publisher: American Meteorological Society
Abstract: Possible multiple equilibria of large-scale flows over topography have been subjects of many recent investigations. Early suggestions of Charney and De Vore, Hart and Wiin-Nicisen were based upon idealized flows of very ...
Sensitivity of a Large-Scale Ocean Model to a Parameterization of Topographic Stress
Publisher: American Meteorological Society
Abstract: A conventional ocean model was revised to include a tendency for velocities to relax toward a maximum entropy solution that depends on the shape of topography. The tendency, called topographic stress, generates poleward ...
Measuring Skill of a Topographic Stress Parameterization in a Large-Scale Ocean Model
Publisher: American Meteorological Society
Abstract: From a global inventory of long-term current meter records, the skill of an ocean model is evaluated by measures of differences between modeled and observed currants. A parameterization of eddy ? topographic interaction ...