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Horizontal Closures

BaroclinicAdjustment.Parameterizations.BiharmonicLeith — Type
struct BiharmonicLeith{FT} <: AbstractScalarBiharmonicDiffusivity{HorizontalFormulation, 3}

The BiharmonicLeith struct represents a biharmonic Leith viscosity parameterization.

Fields

  • C::FT: The coefficient of the biharmonic Leith viscosity.

Reference

Fox-Kemper, B., & Menemenlis, D. (2004). Can large eddy simulation techniques improve mesoscale rich ocean models? In M. Hecht & H. Hasumi (Eds.), Ocean modeling in an eddying regime (pp. 319 - 337). doi: 10.1029/177GM19

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BaroclinicAdjustment.Parameterizations.EnergyBackScatter — Type
struct EnergyBackScatter{FT} <: AbstractScalarDiffusivity{ExplicitTimeDiscretization, HorizontalFormulation, 2}

The EnergyBackScatter struct represents a parameterization for energy backscatter in a baroclinic adjustment model.

Fields

  • C₄: Coefficient C₄ for the biharmonic smagorinky dissipation
  • C₂: Coefficient C₂ for the backscattering antiviscosity
  • Cᴰ: Coefficient Cᴰ for the bottom drag dissipation
  • Uᵇ: Background velocity Uᵇ
  • τ: dissipation timescale τ

Reference

Jansen, M., Adcroft, A., Khani, S., & Kong, H. (2019). Toward an energetically consistent, resolution aware parameterization of ocean mesoscale eddies. Journal of Advances in Modeling Earth Systems, 11 (8), 2844-2860. doi: https://doi.org/10.1029/2019MS001750

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BaroclinicAdjustment.Parameterizations.OMp25Closure — Type
struct OMp25Closure{FT} <: AbstractScalarDiffusivity{ExplicitTimeDiscretization, HorizontalFormulation, 2}

The OMp25Closure struct represents the lateral friction parameterization of the OMp25 GFDL ocean model.

Fields

  • C₄::FT: Coefficient C₄ for the bilaplacia Smagorinky viscosity
  • u₄::FT: Velocity scale u₄ for the static bilaplacian viscosity
  • C₂::FT: Coefficient C₂ for the laplacian Smagorinky viscosity
  • u₂::FT: Velocity scale u₂ for the static laplacian viscosity

Reference

Adcroft, A., Anderson, W., Balaji, V., Blanton, C., Bushuk, M., Dufour, C., . . . Zhang, R. (2019). The gfdl global ocean and sea ice model om4.0: Model description and simulation features. Journal of Advances in Modeling Earth Systems, 11 (10), 3167-3211. doi: https://doi.org/10.1029/2019MS001726633

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BaroclinicAdjustment.Parameterizations.QGLeith — Type
struct QGLeith{FT, M, S} <: AbstractScalarDiffusivity{ExplicitTimeDiscretization, HorizontalFormulation, 2}

The QGLeith struct represents a parameterization for the Leith scalar diffusivity in a quasi-geostrophic model.

Fields

  • C: The coefficient of the Leith scalar diffusivity.
  • min_N²: The minimum value of the buoyancy frequency squared.
  • isopycnal_tensor: The isopycnal tensor used in the parameterization.
  • slope_limiter: The slope limiter used in the parameterization.

Reference

Bachman, S., Fox-Kemper, B., & Pearson, B. (2017). A scale-aware subgrid model for quasi-geostrophic turbulence. Journal of Geophysical Research: Oceans. doi: 10.1002/2016JC012265

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