The KPP Boundary Layer Scheme for the Ocean: revisiting its formulation and benchmarking one-dimensional simulations relative to LES.
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Van Roekel, Luke
Adcroft, Alistair J.
Griffies, Stephen M.
Reichl, Brandon G.
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We evaluate the Community ocean Vertical Mixing project version of the K-profile parameterization (KPP) for modeling upper ocean turbulent mixing. For this purpose, one-dimensional KPP simulations are compared across a suite of oceanographically relevant regimes against horizontally averaged large eddy simulations (LESs).We find the standard configuration of KPP consistent with LES across many forcing regimes, supporting its physical basis. Our evaluation also motivates recommendations for KPP best practices within ocean circulation models and identifies areas where further research is warranted. The original treatment of KPP recommends the matching of interior diffusivities and their gradients to the KPP-predicted values computed in the ocean surface boundary layer (OSBL). However, we find that difficulties in representing derivatives of rapidly changing diffusivities near the base of the OSBL can lead to loss of simulation fidelity. To mitigate this difficulty, we propose an.....
JournalJournal of Advances in Modeling Earth Systems
Sustainable Development Goals (SDG)14.A
Best Practice TypeStandard Operating Procedure
CitationVan Roekel, L. P., Adcroft, A., Danabasoglu, G., Griffies, S. M., Kauffman, B., Large, W. G., et al. (2018). The KPP boundary layer scheme for the ocean: revisiting its formulation and benchmarking one-dimensional simulations relative to LES. Journal of Advances in Modeling Earth Systems, 10, pp.2647–2685. DOI: 10.1029/2018MS001336
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