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Multiple Jets of the Antarctic Circumpolar Current South of Australia
Publisher: American Meteorological Society
Abstract: Maps of the gradient of sea surface height (SSH) and sea surface temperature (SST) reveal that the Antarctic Circumpolar Current (ACC) consists of multiple jets or frontal filaments. The braided and patchy nature of the ...
Some Remarks on Interpolation of Nonstationary Oceanographic Fields
Publisher: American Meteorological Society
Abstract: The performance of four methods for interpolating anisotropic, spatially nonstationary fields is examined. The methods are optimal interpolation (OI, also known as objective analysis), spline interpolation, multiquadric?biharmonic ...
Do Box Inverse Models Work?
Publisher: American Meteorological Society
Abstract: The performance of a box inverse model is tested using output from a near-eddy-resolving numerical model. Conservation equations are written in isopycnal layers for three properties: mass, heat, and salt anomaly. If the ...
Circulation, Renewal, and Modification of Antarctic Mode and Intermediate Water
Publisher: American Meteorological Society
Abstract: Nine hydrographic sections are combined in an inverse box model of the Southern Ocean south of ?12°S. The inverse model has two novel features: the inclusion of independent diapycnal flux unknowns for each property and the ...
The Southern Ocean Limb of the Global Deep Overturning Circulation
Publisher: American Meteorological Society
Abstract: Nine hydrographic sections are combined in an inverse box model of the Southern Ocean south of ?12°S. The inclusion of independent diapycnal flux unknowns for each property and air?sea (heat, freshwater, and momentum) ...
A Mean Synoptic View of the Subantarctic Front South of Australia
Publisher: American Meteorological Society
Abstract: A mean synoptic view of the subantarctic front (SAF) is obtained from current meter and hydrographic data by averaging absolute and baroclinic velocity measurements in bins defined by a cross-stream coordinate that moves ...
Ekman Transport Dominates Local Air–Sea Fluxes in Driving Variability of Subantarctic Mode Water
Publisher: American Meteorological Society
Abstract: Subantarctic Mode Water (SAMW) is formed by deep convection in winter on the equatorward side of the Antarctic Circumpolar Current. Observations south of Australia show that the SAMW temperature (T) and salinity (S) vary ...
Estimates of Area-Averaged Diapycnal Fluxes from Basin-Scale Budgets
Publisher: American Meteorological Society
Abstract: Estimates of area-averaged diapycnal fluxes for the southern oceans are derived from basin-scale budgets of mass, heat, and salt using a box inverse model. The diapycnal fluxes are found to be significant terms in the ...
Eddy Variability and Energetics from Direct Current Measurements in the Antarctic Circumpolar Current South of Australia
Publisher: American Meteorological Society
Abstract: Two-year time series measurements of current velocity and temperature in the Subantarctic Front (SAF) south of Australia from 1993 to 1995 provide estimates of eddy fluxes of heat and momentum across the Antarctic Circumpolar ...
The Diabatic Deacon Cell
Publisher: American Meteorological Society
Abstract: Southern Ocean air?sea fluxes from the COADS dataset are examined for compatibility between buoyancy gain and northward Ekman transport. An analysis in density classes points to an upwelling of Upper Circumpolar Deep Water ...
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