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RISVariability of Potential Energy, Dynamic Height and Salinity in the Main Pycnocline of the Western North Atlantic
Publisher: American Meteorological Society
Abstract: Hydrographic data in the upper 2 km from the period 1914?73 have been analyzed in the western North Atlantic (22?36°N, 66?74°W). Expendable bathythermograph (XBT) data were also analyzed and compared with the hydrographic ...
Structure and Origin of 18°C Water Observed during the POLYMODE Local Dynamics Experiment
Publisher: American Meteorological Society
Abstract: Two distinct types of 18°C water (Subtropical Mode Water) were observed during the POLYMODE Local Dynamics Experiment (LDE; May?July 1978; 31.0°N, 69.5°W). These were revealed on isopyncals by salinity histograms which ...
Structure and Origin of a Small Cyclonic Eddy Observed during the POLYMODE Local Dynamics Experiment
Publisher: American Meteorological Society
Abstract: In the POLYMODE Local Dynamics Experiment (31°N; 69.5°W) a small cyclonic eddy was discovered and mapped. The eddy was characterized by an upward doming of isotherms in the upper part of the main thermocline. The dynamical ...
Determination of Lagrangian Deformations from Analysis of Current Followers
Publisher: American Meteorological Society
Abstract: Methods are presented to determine Lagrangian deformations and turbulence statistics from current followers (drogues, neutrally buoyant floats, etc.). Such determinations allow general advection-diffusion equations such ...
Absolute Geostrophic Velocity Determination from Historical Hydrographic Data in the Western North Atlantic
Publisher: American Meteorological Society
Abstract: Beta-spiral calculations are presented using averaged western North Atlantic hydrographic data from the period 1914?73. Profiles of long-term mean geostrophic flow relative to ISM db along 70°W from 26 to 32°N are shown. ...
The Structure, Dynamics, and Origin of a Small-Scale Lens of Water in the Western North Atlantic Thermocline
Publisher: American Meteorological Society
Abstract: A small-scale, isolated, anticyclonically rotating lens of water was observed in the western North Atlantic thermocline during the POLYMODE Local Dynamics Experiment. Using a combination of SOFAR float, hydrographic, ...
Water Mass Structure during the POLYMODE Local Dynamics Experiment
Publisher: American Meteorological Society
Abstract: The seven intensive hydrographic surveys of temperature, salinity and oxygen of the POLYMODE local Dynamics Experiment (LDE) (15 May?15 July 1978) were carded out in a 200 km-wide octagonal region centered at 31°05?N, ...
The Mesoscale Spatial Structure and Evolution of Dynamical and Scalar Properties Observed in the Northwestern Atlantic Ocean during the POLYMODE Local Dynamics Experiment
Publisher: American Meteorological Society
Abstract: Dynamical properties examined in this paper are the dynamic height and the pressure on an isopycnal. Scalars are the salinity and the oxygen concentration on an isopycnal. The sea surface temperature and salinity are also ...
Detection, Structure, and Origin of Extreme Anomalies in a Western Atlantic Oceanographic Section
Publisher: American Meteorological Society
Abstract: Ten anomalous water parcels were detected in the water column of a western Atlantic oceanographic section (0?5550 m; 70°W; 23?33°N). The parcels had extreme properties lying either two standard deviations from historical ...