scholarly journals Oxygen in the Southern Ocean From Argo Floats: Determination of Processes Driving Air-Sea Fluxes

2017 ◽  
Vol 122 (11) ◽  
pp. 8661-8682 ◽  
Author(s):  
Seth M. Bushinsky ◽  
Alison R. Gray ◽  
Kenneth S. Johnson ◽  
Jorge L. Sarmiento
Keyword(s):  
Southern Ocean ◽  
Argo Floats

scholarly journals Eddies Observed by Argo Floats. Part II: Form Stress and Streamline Length in the Southern Ocean

2017 ◽  
Vol 47 (9) ◽  
pp. 2237-2250 ◽  
Author(s):  
Katsuro Katsumata
Keyword(s):  
Southern Ocean ◽  
Drake Passage ◽  
Meridional Transport ◽  
Argo Floats ◽  
Momentum Budget ◽  
Eddy Transport ◽  
Circumpolar Current ◽  
Topographic Barriers ◽  
The Antarctic ◽  
Zonal Momentum

AbstractArgo floats measure horizontal current velocities at the parking depth and vertical profiles of temperature and salinity. These data were used to study the roles that eddies play in the dynamics of the Antarctic Circumpolar Current (ACC) in the Southern Ocean. A zonal momentum budget was quantified in a box spanning the latitudes of the Drake Passage and bounded by the sea surface and the 1000-dbar depth. The input of eastward zonal momentum from the wind (17.1 × 1011 N) was approximately twice the downward transfer of eastward momentum across the isopycnal whose mean depth was 1000 dbar, which was mediated via form stress carried by eddies [(8.1 ± 1.9) × 1011 N]. The zonal momentum budget was closed to within uncertainty, meaning that the momentum not accounted for by eddies was explained by the Coriolis term associated with meridional transport. The form stress was spatially concentrated near meridional ridges, particularly on their eastern flanks. The localization was extreme: 7% of the total area contributed about 90% of the form stress. Lengths of streamlines were stretched around steady standing meanders. Seven major meanders were found at large topographic barriers along the ACC, with cyclonic meander collocated with the peaks of the topographic barriers. Eddies were found to lengthen the streamlines mostly on the eastern flanks of the meridional ridges, where the eddy transport was southward. Poleward eddy transport on the eastern flanks of meridional ridges is thus highlighted in the ACC dynamics in transferring eastward zonal momentum downward and in adjusting to wind changes by stretching streamlines.

scholarly journals Plankton Assemblage Estimated with BGC-Argo Floats in the Southern Ocean: Implications for Seasonal Successions and Particle Export

2017 ◽  
Vol 122 (10) ◽  
pp. 8278-8292 ◽  
Author(s):  
Mathieu Rembauville ◽  
Nathan Briggs ◽  
Mathieu Ardyna ◽  
Julia Uitz ◽  
Philippe Catala ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Argo Floats ◽  
Particle Export

scholarly journals Water Masses and Flow Fields of the Southern Ocean Measured by Autonomous Profiling Floats (Argo floats)

2005 ◽  
Vol 27 (2) ◽  
pp. 183-188
Author(s):  
Young-Gyu Park ◽  
Kyung-Hee Oh ◽  
Moon-Sik Suk
Keyword(s):  
Southern Ocean ◽  
Flow Fields ◽  
Water Masses ◽  
Argo Floats

scholarly journals Evaluating Southern Ocean Carbon Eddy-Pump From Biogeochemical-Argo Floats

2018 ◽  
Vol 123 (2) ◽  
pp. 971-984 ◽  
Author(s):  
Joan Llort ◽  
C. Langlais ◽  
R. Matear ◽  
S. Moreau ◽  
A. Lenton ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Argo Floats ◽  
Ocean Carbon

The Southern Ocean Waves Experiment. Part III: Sea Surface Slope Statistics and Near-Nadir Remote Sensing

2008 ◽  
Vol 38 (3) ◽  
pp. 670-685 ◽  
Author(s):  
E. J. Walsh ◽  
C. W. Wright ◽  
M. L. Banner ◽  
D. C. Vandemark ◽  
B. Chapron ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Incidence Angle ◽  
Wave Spectrum ◽  
Ocean Waves ◽  
Sea Surface ◽  
Radar Altimeter ◽  
Ka Band ◽  
Wide Range ◽  
Non Gaussian

Abstract During the Southern Ocean Waves Experiment (SOWEX), registered ocean wave topography and backscattered power data at Ka band (36 GHz) were collected with the NASA Scanning Radar Altimeter (SRA) off the coast of Tasmania under a wide range of wind and sea conditions, from quiescent to gale-force winds with 9-m significant wave height. Collection altitude varied from 35 m to over 1 km, allowing determination of the sea surface mean square slope (mss), the directional wave spectrum, and the detailed variation of backscattered power with incidence angle, which deviated from a simple Gaussian scattering model. The non-Gaussian characteristics of the backscatter increased systematically with the mss, suggesting that a global model to characterize Ka-band radar backscatter from the sea surface within 25° of nadir might be possible.

scholarly journals The determination of sea level in the Southern Ocean

1985 ◽  
Vol 4 (1) ◽  
pp. 29-34 ◽  
Author(s):  
J. R. E. Lutjeharms
Keyword(s):  
Southern Ocean ◽  
Sea Level ◽  
Research Projects ◽  
Specific Research

The importance of sea-level measurements for an understanding both of oceanology and of climate is increasingly stressed in the literature. This review of existing knowledge on the sea-level of the Southern Ocean reveals certain well-defined gaps and it points to a need for specific research projects to fill these gaps.

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