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RISDecadal-Scale Temperature Trends in the Southern Hemisphere Ocean
Publisher: American Meteorological Society
Abstract: Long-term trends in the heat content of the Southern Hemisphere ocean are evaluated by comparing temperature profiles collected during the 1990s with profiles collected starting in the 1930s. Data are drawn both from ...
Statistical Characterization of Zonal and Meridional Ocean Wind Stress
Publisher: American Meteorological Society
Abstract: Four years of ocean vector wind data are used to evaluate statistics of wind stress over the ocean. Raw swath wind stresses derived from the Quick Scatterometer (QuikSCAT) are compared with five different global gridded ...
Why Potential Vorticity Is Not Conserved along Mean Streamlines in a Numerical Southern Ocean
Publisher: American Meteorological Society
Abstract: Potential vorticity (PV) is used as an indicator of the forcing processes and dissipation at work in the Southern Ocean. Output from the Semtner?Chervin model run with quarter-degree resolution is considered on isopycnal ...
The Southern Ocean Momentum Balance: Evidence for Topographic Effects from Numerical Model Output and Altimeter Data
Publisher: American Meteorological Society
Abstract: The momentum balance of the Antarctic Circumpolar Current is investigated using both output from a high-resolution primitive equation model and sea surface height measurements from the Geosat altimeter. In the Semtner?Chervin ...
Float Observations of the Southern Ocean. Part I: Estimating Mean Fields, Bottom Velocities, and Topographic Steering
Publisher: American Meteorological Society
Abstract: Autonomous Lagrangian Circulation Explorer (ALACE) floats are used to examine mean flow and eddy fluxes at 900-m depth in the Southern Ocean. Mean temperature and dynamic topography from float data are consistent with ...
Float Observations of the Southern Ocean. Part II: Eddy Fluxes
Publisher: American Meteorological Society
Abstract: Autonomous Lagrangian Circulation Explorer (ALACE) floats are used to examine eddy fluxes in the Southern Ocean. Eddy fluxes are calculated from differences between ALACE float data and mean fields derived from hydrographic ...
Statistical Behavior of ALACE Floats at the Surface of the Southern Ocean
Publisher: American Meteorological Society
Abstract: Autonomous Lagrangian Circulation Explorer (ALACE) floats were designed to measure subsurface velocities throughout the global ocean. In order to transmit their data to satellite, they spend 24 h at the ocean surface during ...
Adjustment of the Southern Ocean to Wind Forcing on Synoptic Time Scales
Publisher: American Meteorological Society
Abstract: This study addresses the response of the Southern Ocean to high-frequency wind forcing, focusing on the impact of several barotropic modes on the circumpolar transport. A suite of experiments is performed with an unstratified ...
Stochastic Dynamics of Sea Surface Height Variability
Publisher: American Meteorological Society
Abstract: Sea surface height anomalies measured by the Ocean Topography Experiment (TOPEX)/Poseidon satellite altimeter indicate high values of skewness and kurtosis. Except in a few regions, including the Gulf Stream, the Kuroshio ...
Modal Decay in the Australia–Antarctic Basin
Publisher: American Meteorological Society
Abstract: The barotropic intraseasonal variability in the Australia?Antarctic Basin (AAB) is studied in terms of the excitation and decay of topographically trapped barotropic modes. The main objective is to reconcile two widely ...