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Spectral Energy Fluxes in Geostrophic Turbulence: Implications for Ocean Energetics
Publisher: American Meteorological Society
Abstract: The energy pathways in geostrophic turbulence are explored using a two-layer, flat-bottom, f-plane, quasigeostrophic model forced by an imposed, horizontally homogenous, baroclinically unstable mean flow and damped by ...
On Quadratic Bottom Drag, Geostrophic Turbulence, and Oceanic Mesoscale Eddies
Publisher: American Meteorological Society
Abstract: Many investigators have idealized the oceanic mesoscale eddy field with numerical simulations of geostrophic turbulence forced by a horizontally homogeneous, baroclinically unstable mean flow. To date such studies have ...
Effects of Mean Flow Direction on Energy, Isotropy, and Coherence of Baroclinically Unstable Beta-Plane Geostrophic Turbulence
Publisher: American Meteorological Society
Abstract: The effects of mean flow direction on statistically steady, baroclinically unstable, beta-plane quasigeostrophic (QG) turbulence are examined in a two-layer numerical model. The turbulence is forced by an imposed, horizontally ...
Baroclinically Unstable Geostrophic Turbulence in the Limits of Strong and Weak Bottom Ekman Friction: Application to Midocean Eddies
Publisher: American Meteorological Society
Abstract: This paper examines the plausibility of mesoscale eddy generation through local baroclinic instability of weak midocean gyre flows. The main tool is a statistically steady, two-layer quasigeostrophic turbulence model driven ...
Climatic Warming of Atlantic Intermediate Waters
Publisher: American Meteorological Society
Abstract: Interdecadal temperature variability of the Atlantic Ocean is investigated by differencing hydrographic sections taken from the 1920s through the 1990s. A comprehensive reanalysis of North Atlantic sections and the inclusion ...
Cascade Inequalities for Forced–Dissipated Geostrophic Turbulence
Publisher: American Meteorological Society
Abstract: Analysis of spectral kinetic energy fluxes in satellite altimetry data has demonstrated that an inverse cascade of kinetic energy is ubiquitous in the ocean. In geostrophic turbulence models, a fully developed inverse ...
The drag on the barotropic tide due to the generation of baroclinic motion
Publisher: American Meteorological Society
Abstract: The interaction of a barotropic flow with topography generates baroclinic motion which exerts a stress on the barotropic flow. Here, explicit solutions are calculated for the spatial-mean flow (i.e. the barotropic tide) ...
Drivers of Atmospheric and Oceanic Surface Temperature Variance: A Frequency Domain Approach
Publisher: American Meteorological Society
Dissipating and Reflecting Internal Waves
Publisher: American Meteorological Society
Frequency-Domain Analysis of Atmospherically Forced versus Intrinsic Ocean Surface Kinetic Energy Variability in GFDL’s CM2-O Model Hierarchy
Publisher: American Meteorological Society
Abstract: AbstractLow-frequency variability at the ocean surface can be excited both by atmospheric forcing, such as in exchanges of heat and momentum, and by the intrinsic nonlinear transfer of energy between mesoscale ocean eddies. ...