Publication Abstracts

Canuto et al. 2018

Canuto, V.M., Y. Cheng, M. Dubovikov, A.M. Howard, and A. Leboissetier, 2018: Parameterization of mixed layer and deep-ocean mesoscales including nonlinearity. J. Phys. Oceanogr., 48, no. 3, 555-572, doi:10.1175/JPO-D-16-0255.1.

In 2011, Chelton et al. carried out a comprehensive census of mesoscales using altimetry data and reached the following conclusions: :essentially all of the observed mesoscale features are non-linear" and "mesoscales do not move with the mean velocity but with their own drift velocity," which is "the most germane of all the non-linear metrics". Accounting for these results in a mesoscale parameterization presents conceptual and practical challenges since linear analysis is no longer usable and one needs a model of non-linearity. A mesoscale parameterization is presented that has the following features: 1) it is based on the solutions of the non-linear mesoscale dynamical equations, 2) it describes arbitrary tracers, 3) it includes adiabatic (A) and diabatic (D) regimes, 4) the eddy-induced velocity is the sum of a Gent and McWilliams (GM) term plus a new term representing the difference between drift and mean velocities, 5) the new term lowers the transfer of mean potential energy to mesoscales, 6) the isopycnal slopes are not as flat as in the GM case, 7) deep-ocean stratification is enhanced compared to previous parameterizations where being more weakly stratified allowed a large heat uptake that is not observed, and 8) the strength of the Deacon Cell is reduced. The numerical results are from a stand-alone ocean code with Coordinated Ocean-Ice Reference Experiment I (CORE-I) normal year forcing.

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BibTeX Citation

  author={Canuto, V. M. and Cheng, Y. and Dubovikov, M. and Howard, A. M. and Leboissetier, A.},
  title={Parameterization of mixed layer and deep-ocean mesoscales including nonlinearity},
  journal={J. Phys. Oceanogr.},

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RIS Citation

ID  - ca08620i
AU  - Canuto, V. M.
AU  - Cheng, Y.
AU  - Dubovikov, M.
AU  - Howard, A. M.
AU  - Leboissetier, A.
PY  - 2018
TI  - Parameterization of mixed layer and deep-ocean mesoscales including nonlinearity
JA  - J. Phys. Oceanogr.
VL  - 48
IS  - 3
SP  - 555
EP  - 572
DO  - 10.1175/JPO-D-16-0255.1
ER  -

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