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Bishop, S. P., University of Rhode Island, Narragansett, USA, sbishop@gso.uri.edu
Watts, D. R., University of Rhode Island , Narragansett, USA, rwatts@gso.uri.edu
Donohue, K. A., University of Rhode Island, Narragansett, USA, kdonohue@gso.uri.edu

DIVERGENT EDDY HEAT FLUXES IN THE KUROSHIO EXTENSION 143O-149OE

From observations made during the Kuroshio Extension System Study (KESS), 16-month mean maps of eddy heat fluxes were quantified using an array of current and pressure equipped inverted echo sounders (CPIES). Weakly depth-dependent geostrophic currents, measured in the deep ocean, are responsible for driving divergent eddy heat fluxes across the upper-ocean front. The vertical coupling between the deep and upper ocean is the process responsible for these dynamically-important eddy heat fluxes. Fluxes are strongest near the mean path of the jet and are vertically coherent, with extrema exceeding 500 kW m-2 near 400 m depth. The fluxes change alongstream from downgradient-to-upgradient at the mean trough axis. The mean spatial structure results from episodic and varied mesoscale processes: a cold-core ring formation, two ring-jet interactions, frontal meanders that grow and decay, and topographically-controlled weakly depth-dependent eddies that couple to the jet in the 30-60 day band.

Poster presentation

Session #:020
Date: 2/23/2012
Time: 17:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: Yes

PosterID: B1399