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SOFAR Float Observations of an Intermediate-Depth Eastern Boundary Current and Mesoscale Variability in the Eastern Tropical Atlantic Ocean **

SOFAR Float Observations of an Intermediate-Depth Eastern Boundary Current and Mesoscale... Two neutrally buoyant SOFAR floats vigorously looped and meandered at depths of 950––1150 m in the eastern tropical Atlantic Ocean. The float trajectories illustrate a poleward flow along the tropical eastern boundary and significant intermediate-depth mesoscale variability in the low-latitude eastern basin. One float, caught within an energetic cyclonic eddy near the eastern boundary, looped cyclonically 14 times while translating 600 km northward parallel to the African coastline. A second float, launched near the Mid-Atlantic Ridge, meandered eastward with a Lagrangian zonal wavelength of 400 km and meridional amplitude exceeding 200 km. Satellite infrared imagery indicates that horizontal shear associated with the system of near-surface zonal equatorial currents may contribute to the observed intermediate-depth variability. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Physical Oceanography American Meteorological Society

SOFAR Float Observations of an Intermediate-Depth Eastern Boundary Current and Mesoscale Variability in the Eastern Tropical Atlantic Ocean **

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Publisher
American Meteorological Society
Copyright
Copyright © 1997 American Meteorological Society
ISSN
1520-0485
DOI
10.1175/1520-0485(1999)029<1265:SFOOAI>2.0.CO;2
Publisher site
See Article on Publisher Site

Abstract

Two neutrally buoyant SOFAR floats vigorously looped and meandered at depths of 950––1150 m in the eastern tropical Atlantic Ocean. The float trajectories illustrate a poleward flow along the tropical eastern boundary and significant intermediate-depth mesoscale variability in the low-latitude eastern basin. One float, caught within an energetic cyclonic eddy near the eastern boundary, looped cyclonically 14 times while translating 600 km northward parallel to the African coastline. A second float, launched near the Mid-Atlantic Ridge, meandered eastward with a Lagrangian zonal wavelength of 400 km and meridional amplitude exceeding 200 km. Satellite infrared imagery indicates that horizontal shear associated with the system of near-surface zonal equatorial currents may contribute to the observed intermediate-depth variability.

Journal

Journal of Physical OceanographyAmerican Meteorological Society

Published: Aug 28, 1997

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