Spreading of near-inertial energy in a 1/12 degrees model of the North Atlantic Ocean

Near-inertial energy in the ocean is thought to be redistributed by β-dispersion, whereby near-inertial waves generated at the surface by wind forcing propagate downward and equatorward. In this letter, we examine the spreading of near-inertial energy in a realistic 1/12° model of the North Atlantic...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Zhai, X, Greatbatch, R, Eden, C
Format: Article in Journal/Newspaper
Language:unknown
Published: 2016
Subjects:
Online Access:https://doi.org/10.1029/2007GL029895
https://ora.ox.ac.uk/objects/uuid:67056efb-a365-4580-b0c6-ae5ae46bd53d
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Summary:Near-inertial energy in the ocean is thought to be redistributed by β-dispersion, whereby near-inertial waves generated at the surface by wind forcing propagate downward and equatorward. In this letter, we examine the spreading of near-inertial energy in a realistic 1/12° model of the North Atlantic driven by synoptically varying wind forcing. We find that (1) near-inertial energy is strongly influenced by the mesoscale eddy field and appears to be locally drained to the deep ocean, largely by the chimney effect associated with anticyclonic eddies, and (2) the interior of the subtropical gyre shows very low levels of near-inertial energy contrary to expectations based on the β-dispersion effect. Copyright 2007 by the American Geophysical Union.