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Eddy Amplitudes in Baroclinic Turbulence Driven by Nonzonal Mean Flow: Shear Dispersion of Potential Vorticity
Publisher: American Meteorological Society
Abstract: As in the midlatitude atmosphere, midocean eddies are primarily generated by baroclinically unstable mean currents. In contrast to the atmosphere, however, oceanic currents are significantly nonzonal. Even weak nonzonal ...
Comments on “The k−3 and k−5/3 Energy Spectrum of Atmospheric Turbulence: Quasigeostrophic Two-Level Model Simulation”
Publisher: American Meteorological Society
A Local Model for Planetary Atmospheres Forced by Small-Scale Convection
Publisher: American Meteorological Society
Abstract: An equivalent-barotropic fluid on the ? plane, forced at small scales by random stirring and dissipated by linear heat and vorticity drag, is considered as a local model for flow in the weather layer of internally forced ...
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Publisher: American Meteorological Society
Evidence for Enhanced Eddy Mixing at Middepth in the Southern Ocean
Publisher: American Meteorological Society
Abstract: Satellite altimetric observations of the ocean reveal surface pressure patterns in the core of the Antarctic Circumpolar Current (ACC) that propagate downstream (eastward) but slower than the mean surface current by about ...
The Production and Dissipation of Compensated Thermohaline Variance by Mesoscale Stirring
Publisher: American Meteorological Society
Abstract: Temperature?salinity profiles from the region studied in the North Atlantic Tracer Release Experiment (NATRE) show large isopycnal excursions at depths just below the thermocline. It is proposed here that these thermohaline ...
Quasigeostrophic Turbulence with Explicit Surface Dynamics: Application to the Atmospheric Energy Spectrum
Publisher: American Meteorological Society
Abstract: The horizontal wavenumber spectra of wind and temperature near the tropopause have a steep ?3 slope at synoptic scales and a shallower ?5/3 slope at mesoscales, with a transition between the two regimes at a wavelength of ...
A Note on the Numerical Representation of Surface Dynamics in Quasigeostrophic Turbulence: Application to the Nonlinear Eady Model
Publisher: American Meteorological Society
Abstract: The quasigeostrophic equations consist of the advection of linearized potential vorticity coupled with advection of temperature at the bounding upper and lower surfaces. Numerical models of quasigeostrophic flow often ...
A Surface-Aware Projection Basis for Quasigeostrophic Flow
Publisher: American Meteorological Society
Abstract: ecent studies indicate that altimetric observations of the ocean?s mesoscale eddy field reflect the combined influence of surface buoyancy and interior potential vorticity anomalies. The former have a surface-trapped ...
The Scales and Equilibration of Midocean Eddies: Freely Evolving Flow
Publisher: American Meteorological Society
Abstract: Quasigeostrophic turbulence theory and numerical simulation are used to study the mechanisms determining the scale, structure, and equilibration of mesoscale ocean eddies. The present work concentrates on using freely ...