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Observations of Ekman Currents in the Southern Ocean
Publisher: American Meteorological Society
Abstract: Largely zonal winds in the Southern Ocean drive an equatorward Ekman transport that constitutes the shallowest limb of the meridional overturning circulation of the Antarctic Circumpolar Current (ACC). Despite its importance, ...
Improving Estimates of the Antarctic Circumpolar Current Streamlines in Drake Passage
Publisher: American Meteorological Society
Abstract: Accurately resolving the mean Antarctic Circumpolar Current (ACC) is essential for determining Southern Ocean eddy fluxes that are important to the global meridional overturning circulation. Previous estimates of the mean ...
Upper-Ocean Eddy Heat Flux across the Antarctic Circumpolar Current in Drake Passage from Observations: Time-Mean and Seasonal Variability
Publisher: American Meteorological Society
Abstract: Eddy heat flux plays a fundamental role in the Southern Ocean meridional overturning circulation, providing the only mechanism for poleward heat transport above the topography and below the Ekman layer at the latitudes of ...
Shear at the Base of the Oceanic Mixed Layer Generated by Wind Shear Alignment
Publisher: American Meteorological Society
Abstract: bservations are used to evaluate a simple theoretical model for the generation of near-inertial shear spikes at the base of the open ocean mixed layer when the upper ocean displays a two-layer structure. The model predicts ...
Near-Surface Eddy Heat and Momentum Fluxes in the Antarctic Circumpolar Current in Drake Passage
Publisher: American Meteorological Society
Abstract: he authors present new estimates of the eddy momentum and heat fluxes from repeated high-resolution upper-ocean velocity and temperature observations in Drake Passage and interpret their role in the regional Antarctic ...
Mesoscale to Submesoscale Wavenumber Spectra in Drake Passage
Publisher: American Meteorological Society
Abstract: his study discusses the upper-ocean (0?200 m) horizontal wavenumber spectra in the Drake Passage from 13 yr of shipboard ADCP measurements, altimeter data, and a high-resolution numerical simulation. At scales between 10 ...
Estimates of Eddy Heat Flux Crossing the Antarctic Circumpolar Current from Observations in Drake Passage
Publisher: American Meteorological Society
Abstract: he 4-yr measurements by current- and pressure-recording inverted echo sounders in Drake Passage produced statistically stable eddy heat flux estimates. Horizontal currents in the Antarctic Circumpolar Current (ACC) turn ...
Can Drake Passage Observations Match Ekman's Classic Theory?
Publisher: American Meteorological Society
Abstract: kman's theory of the wind-driven ocean surface boundary layer assumes a constant eddy viscosity and predicts that the current rotates with depth at the same rate as it decays in amplitude. Despite its wide acceptance, Ekman ...
CORRIGENDUM
Publisher: American Meteorological Society
Global Abyssal Mixing Inferred from Lowered ADCP Shear and CTD Strain Profiles
Publisher: American Meteorological Society
Abstract: Internal wave?wave interaction theories and observations support a parameterization for the turbulent dissipation rate ε and eddy diffusivity K that depends on internal wave shear ?Vz2? and strain ??z2? variances. Its ...