Journal article
The effect on simulated ocean climate of a parameterization of unbroken wave-induced mixing incorporated into the k-epsilon mixing scheme
K Walsh, P Govekar, AV Babanin, M Ghantous, P Spence, E Scoccimarro
Journal of Advances in Modeling Earth Systems | AMER GEOPHYSICAL UNION | Published : 2017
DOI: 10.1002/2016MS000707
Abstract
A new parameterization of mixing processes in the upper ocean is tested in a ¼° resolution global ocean climate model. The parameterization represents the effect of turbulent mixing by unbroken waves as an additional turbulent shear production term in the k-epsilon mixing scheme. The results show that the inclusion of this parameterization has a noticeable effect on ocean climate, particularly in regions of high wave activity such as the Southern Ocean. Inclusion of this process also leads to some reduction in the biases of the simulated climate, including mixed layer depth, compared with available observations.
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Awarded by National Computational Infrastructure
Funding Acknowledgements
The authors would like to thank the Australian Research Council Centre of Excellence for Climate System Science for the use of their 1/4 degrees horizontal resolution version of MOM5. This research was undertaken with the assistance of resources from the National Computational Infrastructure (NCI), which is supported by the Australian Government. The authors would particularly like to thank Aiden Heerdegen and Marshall Ward of NCI for their assistance. This work was partially funded by the Australian Research Council Discovery Projects grant DP 130100227. Paul Spence is supported by the Australian Research Council grant DE150100223. All data produced during this work, including the files necessary to reproduce the result, can be obtained on request (kevin.walsh@unimelb.edu.au).