mom_stoch_eos module reference

Provides the ocean stochastic equation of state.

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Data Types

mom_stoch_eos_cs

Describes parameters of the stochastic component of the EOS correction, described in Stanley et al.

Functions/Subroutines

mom_stoch_eos_init()

Initializes MOM_stoch_eos module, returning a logical indicating whether this module will be used.

stoch_eos_register_restarts()

Register fields related to the stoch_EOS module for resarts.

mom_stoch_eos_run()

Generates a pattern in space and time for the ocean stochastic equation of state.

post_stoch_eos_diags()

Write out any diagnostics related to this module.

mom_calc_vart()

Computes a parameterization of the SGS temperature variance.

Detailed Description

Provides the ocean stochastic equation of state.

Type Documentation

type  mom_stoch_eos/mom_stoch_eos_cs

Describes parameters of the stochastic component of the EOS correction, described in Stanley et al. JAMES 2020.

Type fields:
  • % id_stoch_eos :: integer Diagnostic IDs.

  • % id_stoch_phi :: integer Diagnostic IDs.

  • % id_tvar_sgs :: integer Diagnostic IDs.

  • % l2_inv :: real, dimension(:,:), allocatable One over sum of the T cell side side lengths squared [L-2 ~> m-2].

  • % rgauss :: real, dimension(:,:), allocatable nondimensional random Gaussian [nondim]

  • % tfac :: real Nondimensional decorrelation time factor, ~1/3.7 [nondim].

  • % amplitude :: real Nondimensional standard deviation of Gaussian [nondim].

  • % seed :: integer PRNG seed.

  • % rn_cs :: type(prng) PRNG control structure.

  • % pattern :: real, dimension(:,:), allocatable Random pattern for stochastic EOS [nondim].

  • % phi :: real, dimension(:,:), allocatable temporal correlation stochastic EOS [nondim]

  • % use_stoch_eos :: logical If true, use the stochastic equation of state (Stanley et al. 2020)

  • % stanley_coeff :: real Coefficient correlating the temperature gradient and SGS T variance [nondim]; if <0, turn off scheme in all codes.

  • % stanley_a :: real a in exp(aX) in stochastic coefficient [nondim]

  • % kappa_smooth :: real A diffusivity for smoothing T/S in vanished layers [H Z T-1 ~> m2 s-1 or kg m-1 s-1].

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Function/Subroutine Documentation

function  mom_stoch_eos/mom_stoch_eos_init(Time, G, GV, US, param_file, diag, CS, restart_CS)

Initializes MOM_stoch_eos module, returning a logical indicating whether this module will be used.

Parameters:
  • time :: [in] Time for stochastic process

  • g :: [in] The ocean’s grid structure.

  • gv :: [in] Vertical grid structure

  • us :: [in] A dimensional unit scaling type

  • param_file :: param_file [in] structure indicating parameter file to parse

  • diag :: diag [inout] Structure used to control diagnostics

  • cs :: [inout] Stochastic control structure

  • restart_cs :: A pointer to the restart control structure.

Call to:

mom_restart::is_new_run mom_error_handler::mom_error mom_random::random_2d_constructor mom_random::random_2d_norm mom_diag_mediator::register_diag_field

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subroutine mom_stoch_eos/stoch_eos_register_restarts(HI, param_file, CS, restart_CS)

Register fields related to the stoch_EOS module for resarts.

Parameters:
  • hi :: [in] Horizontal index structure

  • param_file :: param_file [in] structure indicating parameter file to parse

  • cs :: [inout] Stochastic control structure

  • restart_cs :: A pointer to the restart control structure.

Called from:

mom::initialize_mom

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subroutine mom_stoch_eos/mom_stoch_eos_run(G, u, v, delt, Time, CS)

Generates a pattern in space and time for the ocean stochastic equation of state.

Parameters:
  • g :: [in] The ocean’s grid structure.

  • u :: u [in] The zonal velocity [L T-1 ~> m s-1].

  • v :: v [in] The meridional velocity [L T-1 ~> m s-1].

  • delt :: delt [in] Time step size for AR1 process [T ~> s].

  • time :: [in] Time for stochastic process

  • cs :: [inout] Stochastic control structure

Call to:

mom_random::random_2d_constructor mom_random::random_2d_norm

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subroutine mom_stoch_eos/post_stoch_eos_diags(CS, tv, diag)

Write out any diagnostics related to this module.

Parameters:
  • cs :: [in] Stochastic control structure

  • tv :: tv [in] Thermodynamics structure

  • diag :: diag [inout] Structure to control diagnostics

Called from:

mom::step_mom_dynamics

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subroutine mom_stoch_eos/mom_calc_vart(G, GV, US, h, tv, CS, dt)

Computes a parameterization of the SGS temperature variance.

Parameters:
  • g :: [in] The ocean’s grid structure.

  • gv :: [in] Vertical grid structure

  • us :: [in] A dimensional unit scaling type

  • h :: h [in] Layer thickness [H ~> m]

  • tv :: tv [inout] Thermodynamics structure

  • cs :: [inout] Stochastic control structure

  • dt :: dt [in] Time increment [T ~> s]

Call to:

mom_isopycnal_slopes::vert_fill_ts

Called from:

mom::step_mom_dynamics

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