A comparison of mesoscale eddy heat fluxes from observations and a high-resolution ocean model simulation of the Kuroshio extension

For the first time estimates of divergent eddy heat flux (DEHF) from a high-resolution (0.1°) simulation of the Parallel Ocean Program (POP) are compared with estimates made during the Kuroshio Extension System Study (KESS). The results from POP are in good agreement with KESS observations. POP captures the lateral and vertical structure of mean-to-eddy energy conversion rates, which range from 2 to 10 cm² s⁻³. The dynamical mechanism of vertical coupling between the deep and upper ocean is the process responsible for DEHFs in POP and is in accordance with baroclinic instability observed in the Gulf Stream and Kuroshio Extension. Meridional eddy heat transport values are ~14% larger in POP at its maximum value. This is likely due to the more zonal path configuration in POP. The results from this study suggest that HR POP is a useful tool for estimating eddy statistics in the Kuroshio Extension region, and thereby provide guidance in the formulation and testing of eddy mixing parameterization schemes.

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Author Bishop, Stuart
Bryan, Frank
Publisher UCAR/NCAR - Library
Publication Date 2013-12-01T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T18:55:52.916590
Metadata Record Identifier edu.ucar.opensky::articles:13146
Metadata Language eng; USA
Suggested Citation Bishop, Stuart, Bryan, Frank. (2013). A comparison of mesoscale eddy heat fluxes from observations and a high-resolution ocean model simulation of the Kuroshio extension. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7542pgc. Accessed 10 February 2025.

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