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Radiation and Dissipation of Internal Waves Generated by Geostrophic Motions Impinging on Small-Scale Topography: Theory
Publisher: American Meteorological Society
Abstract: Observations and inverse models suggest that small-scale turbulent mixing is enhanced in the Southern Ocean in regions above rough topography. The enhancement extends O(1) km above the topography, suggesting that mixing ...
Friction, Frontogenesis, and the Stratification of the Surface Mixed Layer
Publisher: American Meteorological Society
Abstract: The generation and destruction of stratification in the surface mixed layer of the ocean is understood to result from vertical turbulent transport of buoyancy and momentum driven by air?sea fluxes and stresses. In this ...
Macroturbulent Equilibration in a Thermally Forced Primitive Equation System
Publisher: American Meteorological Society
Abstract: major question for climate studies is to quantify the role of turbulent eddy fluxes in maintaining the observed ocean?atmosphere state. It has been argued that eddy fluxes keep the midlatitude atmosphere in a state that ...
Equilibration of an Atmosphere by Adiabatic Eddy Fluxes
Publisher: American Meteorological Society
Abstract: major question for climate studies is to quantify the role of turbulent eddy fluxes in maintaining the observed atmospheric mean state. Both the equator-to-pole temperature gradient and the static stability of the extratropical ...
Interpreting Energy and Tracer Spectra of Upper-Ocean Turbulence in the Submesoscale Range (1–200 km)
Publisher: American Meteorological Society
Abstract: ubmesoscale (1?200 km) wavenumber spectra of kinetic and potential energy and tracer variance are obtained from in situ observations in the Gulf Stream region and in the eastern subtropical North Pacific. In the Gulf Stream ...
The Vertical Structure of the Eddy Diffusivity and the Equilibration of the Extratropical Atmosphere
Publisher: American Meteorological Society
Abstract: bservations suggest that the time- and zonal-mean state of the extratropical atmosphere adjusts itself such that the so-called ?criticality parameter? (which relates the vertical stratification to the horizontal temperature ...
Seasonal Synchronization in a Chaotic Ocean–Atmosphere Model
Publisher: American Meteorological Society
Abstract: The signatures of feedback between the atmosphere and the ocean are studied with a simple coupled model. The atmospheric component, based on Lorenz's 1984 model is chaotic and has intrinsic variability at all timescales. ...
Compensation and Alignment of Thermohaline Gradients in the Ocean Mixed Layer
Publisher: American Meteorological Society
Abstract: The surface mixed layer of the ocean is often characterized by thermohaline compensation and alignment. That is, temperature and salinity gradients tend to be parallel and to cancel in their contribution to density. In ...
Isopycnal Dispersion in NATRE
Publisher: American Meteorological Society
Abstract: Finescale velocity and density fluctuations consist of both internal waves and vorticity-containing perturbations (vortical modes). A recent decomposition of observations obtained as part of the North Atlantic Tracer Release ...
Suppression of Eddy Diffusivity across Jets in the Southern Ocean
Publisher: American Meteorological Society
Abstract: Geostrophic eddies control the meridional mixing of heat, carbon, and other climatically important tracers in the Southern Ocean. The rate of eddy mixing is typically quantified through an eddy diffusivity. There is an ...