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Convection with Rotation in a Neutral Ocean: A Study of Open-Ocean Deep Convection
Publisher: American Meteorological Society
Abstract: The intensity and scale of the geostrophically adjusted end state of the convective overturning of a homogeneous rotating ocean of depth H at a latitude where the Coriolis parameter is f, induced by surface buoyancy loss ...
Restratification after Deep Convection
Publisher: American Meteorological Society
Abstract: An important, yet poorly understood, aspect of the water mass transformation process in the ocean is the manner in which the convected fluid, once formed, is accommodated and drawn into the general circulation. Following ...
Dynamics of Isolated Convective Regions in the Ocean
Publisher: American Meteorological Society
Abstract: An initially resting ocean of stratification N is considered, subject to buoyancy loss at its surface of magnitude B0 over a circular region of radius r, at a latitude where the Coriolis parameter is f. Initially the ...
A Heton Perspective of Baroclinic Eddy Transfer in Localized Open Ocean Convection
Publisher: American Meteorological Society
Abstract: A simple point-vortex ?heton? model is used to study localized ocean convection. In particular, the statistically steady state that is established when lateral buoyancy transfer, effected by baroclinic instability, offsets ...
The Role of Eddy Transfer in Setting the Stratification and Transport of a Circumpolar Current
Publisher: American Meteorological Society
Abstract: High resolution numerical experiments of a circumpolar current are diagnosed to study how lateral and vertical transfer of buoyancy by geostrophic eddies balances advection by a meridional circulation driven by surface ...
Robustness of an Effective Diffusivity Diagnostic in Oceanic Flows
Publisher: American Meteorological Society
Abstract: The robustness of Nakamura?s effective diffusivity diagnostic for quantifying eddy diffusivities of tracers within a streamwise-average framework is carefully examined in an oceanographic context, and the limits of its ...
Understanding the Regional Variability of Eddy Diffusivity in the Pacific Sector of the Southern Ocean
Publisher: American Meteorological Society
Abstract: A diagnostic framework is presented, based on the Nakamura effective diffusivity, to investigate the regional variation in eddy diffusivity. Comparison of three different diffusivity calculations enables the effects of ...
Can Eddies Set Ocean Stratification?
Publisher: American Meteorological Society
Abstract: A simple theory is presented for the buoyancy anomaly and depth of penetration of a warm lens created by a surface buoyancy flux and Ekman pumping in an initially homogeneous, rotating fluid. It is assumed that the overturning ...
Estimates and Implications of Surface Eddy Diffusivity in the Southern Ocean Derived from Tracer Transport
Publisher: American Meteorological Society
Abstract: Near-surface ?effective diffusivities? associated with geostrophic eddies in the Southern Ocean are estimated by numerically monitoring the lengthening of idealized tracer contours as they are strained by surface geostrophic ...
Mixed Layer Lateral Eddy Fluxes Mediated by Air–Sea Interaction
Publisher: American Meteorological Society
Abstract: The modulation of air?sea heat fluxes by geostrophic eddies due to the stirring of temperature at the sea surface is discussed and quantified. It is argued that the damping of eddy temperature variance by such air?sea ...