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MOM_parameter_doc.all
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MOM_parameter_doc.all
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! This file was written by the model and records all non-layout or debugging parameters used at run-time.
! === module MOM ===
SPLIT = True ! [Boolean] default = True
! Use the split time stepping if true.
CALC_RHO_FOR_SEA_LEVEL = False ! [Boolean] default = False
! If true, the in-situ density is used to calculate the effective sea level that
! is returned to the coupler. If false, the Boussinesq parameter RHO_0 is used.
ENABLE_THERMODYNAMICS = True ! [Boolean] default = True
! If true, Temperature and salinity are used as state variables.
USE_EOS = True ! [Boolean] default = True
! If true, density is calculated from temperature and salinity with an equation
! of state. If USE_EOS is true, ENABLE_THERMODYNAMICS must be true as well.
DIABATIC_FIRST = True ! [Boolean] default = False
! If true, apply diabatic and thermodynamic processes, including buoyancy
! forcing and mass gain or loss, before stepping the dynamics forward.
USE_CONTEMP_ABSSAL = False ! [Boolean] default = False
! If true, the prognostics T&S are the conservative temperature and absolute
! salinity. Care should be taken to convert them to potential temperature and
! practical salinity before exchanging them with the coupler and/or reporting
! T&S diagnostics.
ADIABATIC = False ! [Boolean] default = False
! There are no diapycnal mass fluxes if ADIABATIC is true. This assumes that KD
! = 0.0 and that there is no buoyancy forcing, but makes the model faster by
! eliminating subroutine calls.
DO_DYNAMICS = True ! [Boolean] default = True
! If False, skips the dynamics calls that update u & v, as well as the gravity
! wave adjustment to h. This may be a fragile feature, but can be useful during
! development
OFFLINE_TRACER_MODE = False ! [Boolean] default = False
! If true, barotropic and baroclinic dynamics, thermodynamics are all bypassed
! with all the fields necessary to integrate the tracer advection and diffusion
! equation are read in from files stored from a previous integration of the
! prognostic model. NOTE: This option only used in the ocean_solo_driver.
USE_REGRIDDING = True ! [Boolean] default = False
! If True, use the ALE algorithm (regridding/remapping). If False, use the
! layered isopycnal algorithm.
BULKMIXEDLAYER = False ! [Boolean] default = False
! If true, use a Kraus-Turner-like bulk mixed layer with transitional buffer
! layers. Layers 1 through NKML+NKBL have variable densities. There must be at
! least NKML+NKBL+1 layers if BULKMIXEDLAYER is true. BULKMIXEDLAYER can not be
! used with USE_REGRIDDING. The default is influenced by ENABLE_THERMODYNAMICS.
THICKNESSDIFFUSE = True ! [Boolean] default = False
! If true, isopycnal surfaces are diffused with a Laplacian coefficient of KHTH.
APPLY_INTERFACE_FILTER = False ! [Boolean] default = False
! If true, model interface heights are subjected to a grid-scale dependent
! spatial smoothing, often with biharmonic filter.
THICKNESSDIFFUSE_FIRST = True ! [Boolean] default = False
! If true, do thickness diffusion or interface height smoothing before dynamics.
! This is only used if THICKNESSDIFFUSE or APPLY_INTERFACE_FILTER is true.
USE_POROUS_BARRIER = True ! [Boolean] default = True
! If true, use porous barrier to constrain the widths and face areas at the
! edges of the grid cells.
BATHYMETRY_AT_VEL = False ! [Boolean] default = False
! If true, there are separate values for the basin depths at velocity points.
! Otherwise the effects of topography are entirely determined from thickness
! points.
DT = 1800.0 ! [s]
! The (baroclinic) dynamics time step. The time-step that is actually used will
! be an integer fraction of the forcing time-step (DT_FORCING in ocean-only mode
! or the coupling timestep in coupled mode.)
DT_THERM = 3600.0 ! [s] default = 1800.0
! The thermodynamic and tracer advection time step. Ideally DT_THERM should be
! an integer multiple of DT and less than the forcing or coupling time-step,
! unless THERMO_SPANS_COUPLING is true, in which case DT_THERM can be an integer
! multiple of the coupling timestep. By default DT_THERM is set to DT.
THERMO_SPANS_COUPLING = False ! [Boolean] default = False
! If true, the MOM will take thermodynamic and tracer timesteps that can be
! longer than the coupling timestep. The actual thermodynamic timestep that is
! used in this case is the largest integer multiple of the coupling timestep
! that is less than or equal to DT_THERM.
HMIX_SFC_PROP = 1.0 ! [m] default = 1.0
! If BULKMIXEDLAYER is false, HMIX_SFC_PROP is the depth over which to average
! to find surface properties like SST and SSS or density (but not surface
! velocities).
HMIX_UV_SFC_PROP = 0.0 ! [m] default = 0.0
! If BULKMIXEDLAYER is false, HMIX_UV_SFC_PROP is the depth over which to
! average to find surface flow properties, SSU, SSV. A non-positive value
! indicates no averaging.
HFREEZE = 10.0 ! [m] default = -1.0
! If HFREEZE > 0, melt potential will be computed. The actual depth over which
! melt potential is computed will be min(HFREEZE, OBLD), where OBLD is the
! boundary layer depth. If HFREEZE <= 0 (default), melt potential will not be
! computed.
INTERPOLATE_P_SURF = False ! [Boolean] default = False
! If true, linearly interpolate the surface pressure over the coupling time
! step, using the specified value at the end of the step.
DTBT_RESET_PERIOD = 0.0 ! [s] default = 3600.0
! The period between recalculations of DTBT (if DTBT <= 0). If DTBT_RESET_PERIOD
! is negative, DTBT is set based only on information available at
! initialization. If 0, DTBT will be set every dynamics time step. The default
! is set by DT_THERM. This is only used if SPLIT is true.
FRAZIL = True ! [Boolean] default = False
! If true, water freezes if it gets too cold, and the accumulated heat deficit
! is returned in the surface state. FRAZIL is only used if
! ENABLE_THERMODYNAMICS is true.
DO_GEOTHERMAL = False ! [Boolean] default = False
! If true, apply geothermal heating.
BOUND_SALINITY = True ! [Boolean] default = False
! If true, limit salinity to being positive. (The sea-ice model may ask for more
! salt than is available and drive the salinity negative otherwise.)
MIN_SALINITY = 0.0 ! [PPT] default = 0.0
! The minimum value of salinity when BOUND_SALINITY=True.
SALINITY_UNDERFLOW = 0.0 ! [PPT] default = 0.0
! A tiny value of salinity below which the it is set to 0. For reference, one
! molecule of salt per square meter of ocean is of order 1e-29 ppt.
TEMPERATURE_UNDERFLOW = 0.0 ! [degC] default = 0.0
! A tiny magnitude of temperatures below which they are set to 0.
C_P = 3992.0 ! [J kg-1 K-1] default = 3991.86795711963
! The heat capacity of sea water, approximated as a constant. This is only used
! if ENABLE_THERMODYNAMICS is true. The default value is from the TEOS-10
! definition of conservative temperature.
USE_PSURF_IN_EOS = True ! [Boolean] default = True
! If true, always include the surface pressure contributions in equation of
! state calculations.
P_REF = 2.0E+07 ! [Pa] default = 2.0E+07
! The pressure that is used for calculating the coordinate density. (1 Pa = 1e4
! dbar, so 2e7 is commonly used.) This is only used if USE_EOS and
! ENABLE_THERMODYNAMICS are true.
FIRST_DIRECTION = 0 ! default = 0
! An integer that indicates which direction goes first in parts of the code that
! use directionally split updates, with even numbers (or 0) used for x- first
! and odd numbers used for y-first.
ALTERNATE_FIRST_DIRECTION = False ! [Boolean] default = False
! If true, after every dynamic timestep alternate whether the x- or y- direction
! updates occur first in directionally split parts of the calculation. If this
! is true, FIRST_DIRECTION applies at the start of a new run or if the next
! first direction can not be found in the restart file.
CHECK_BAD_SURFACE_VALS = True ! [Boolean] default = False
! If true, check the surface state for ridiculous values.
BAD_VAL_SSH_MAX = 50.0 ! [m] default = 20.0
! The value of SSH above which a bad value message is triggered, if
! CHECK_BAD_SURFACE_VALS is true.
BAD_VAL_SSS_MAX = 75.0 ! [PPT] default = 45.0
! The value of SSS above which a bad value message is triggered, if
! CHECK_BAD_SURFACE_VALS is true.
BAD_VAL_SST_MAX = 55.0 ! [deg C] default = 45.0
! The value of SST above which a bad value message is triggered, if
! CHECK_BAD_SURFACE_VALS is true.
BAD_VAL_SST_MIN = -3.0 ! [deg C] default = -2.1
! The value of SST below which a bad value message is triggered, if
! CHECK_BAD_SURFACE_VALS is true.
BAD_VAL_COLUMN_THICKNESS = 0.0 ! [m] default = 0.0
! The value of column thickness below which a bad value message is triggered, if
! CHECK_BAD_SURFACE_VALS is true.
DEFAULT_ANSWER_DATE = 99991231 ! default = 99991231
! This sets the default value for the various _ANSWER_DATE parameters.
DEFAULT_2018_ANSWERS = False ! [Boolean] default = False
! This sets the default value for the various _2018_ANSWERS parameters.
SURFACE_2018_ANSWERS = False ! [Boolean] default = False
! If true, use expressions for the surface properties that recover the answers
! from the end of 2018. Otherwise, use more appropriate expressions that differ
! at roundoff for non-Boussinesq cases.
SURFACE_ANSWER_DATE = 99991231 ! default = 99991231
! The vintage of the expressions for the surface properties. Values below
! 20190101 recover the answers from the end of 2018, while higher values use
! updated and more robust forms of the same expressions. If both
! SURFACE_2018_ANSWERS and SURFACE_ANSWER_DATE are specified, the latter takes
! precedence.
USE_DIABATIC_TIME_BUG = False ! [Boolean] default = False
! If true, uses the wrong calendar time for diabatic processes, as was done in
! MOM6 versions prior to February 2018. This is not recommended.
SAVE_INITIAL_CONDS = True ! [Boolean] default = False
! If true, write the initial conditions to a file given by IC_OUTPUT_FILE.
IC_OUTPUT_FILE = "MOM_IC" ! default = "MOM_IC"
! The file into which to write the initial conditions.
WRITE_GEOM = 1 ! default = 1
! If =0, never write the geometry and vertical grid files. If =1, write the
! geometry and vertical grid files only for a new simulation. If =2, always
! write the geometry and vertical grid files. Other values are invalid.
USE_DBCLIENT = False ! [Boolean] default = False
! If true, initialize a client to a remote database that can be used for online
! analysis and machine-learning inference.
USE_PARTICLES = False ! [Boolean] default = False
! If true, use the particles package.
ENSEMBLE_OCEAN = False ! [Boolean] default = False
! If False, The model is being run in serial mode as a single realization. If
! True, The current model realization is part of a larger ensemble and at the
! end of step MOM, we will perform a gather of the ensemble members for
! statistical evaluation and/or data assimilation.
HOMOGENIZE_FORCINGS = False ! [Boolean] default = False
! If True, homogenize the forces and fluxes.
! === module MOM_domains ===
REENTRANT_X = True ! [Boolean] default = True
! If true, the domain is zonally reentrant.
REENTRANT_Y = False ! [Boolean] default = False
! If true, the domain is meridionally reentrant.
TRIPOLAR_N = True ! [Boolean] default = False
! Use tripolar connectivity at the northern edge of the domain. With
! TRIPOLAR_N, NIGLOBAL must be even.
NIGLOBAL = 360 !
! The total number of thickness grid points in the x-direction in the physical
! domain. With STATIC_MEMORY_ this is set in MOM_memory.h at compile time.
NJGLOBAL = 300 !
! The total number of thickness grid points in the y-direction in the physical
! domain. With STATIC_MEMORY_ this is set in MOM_memory.h at compile time.
NIHALO = 4 ! default = 4
! The number of halo points on each side in the x-direction. How this is set
! varies with the calling component and static or dynamic memory configuration.
NJHALO = 4 ! default = 4
! The number of halo points on each side in the y-direction. How this is set
! varies with the calling component and static or dynamic memory configuration.
! === module MOM_hor_index ===
! Sets the horizontal array index types.
! === module MOM_grid ===
! Parameters providing information about the lateral grid.
REFERENCE_HEIGHT = 0.0 ! [m] default = 0.0
! A reference value for geometric height fields, such as bathyT.
! === module MOM_fixed_initialization ===
INPUTDIR = "./input/" ! default = "."
! The directory in which input files are found.
! === module MOM_grid_init ===
GRID_CONFIG = "mosaic" !
! A character string that determines the method for defining the horizontal
! grid. Current options are:
! mosaic - read the grid from a mosaic (supergrid)
! file set by GRID_FILE.
! cartesian - use a (flat) Cartesian grid.
! spherical - use a simple spherical grid.
! mercator - use a Mercator spherical grid.
GRID_FILE = "ocean_hgrid.nc" !
! Name of the file from which to read horizontal grid data.
USE_TRIPOLAR_GEOLONB_BUG = False ! [Boolean] default = False
! If true, use older code that incorrectly sets the longitude in some points
! along the tripolar fold to be off by 360 degrees.
RAD_EARTH = 6.378E+06 ! [m] default = 6.378E+06
! The radius of the Earth.
TOPO_CONFIG = "file" !
! This specifies how bathymetry is specified:
! file - read bathymetric information from the file
! specified by (TOPO_FILE).
! flat - flat bottom set to MAXIMUM_DEPTH.
! bowl - an analytically specified bowl-shaped basin
! ranging between MAXIMUM_DEPTH and MINIMUM_DEPTH.
! spoon - a similar shape to 'bowl', but with an vertical
! wall at the southern face.
! halfpipe - a zonally uniform channel with a half-sine
! profile in the meridional direction.
! bbuilder - build topography from list of functions.
! benchmark - use the benchmark test case topography.
! Neverworld - use the Neverworld test case topography.
! DOME - use a slope and channel configuration for the
! DOME sill-overflow test case.
! ISOMIP - use a slope and channel configuration for the
! ISOMIP test case.
! DOME2D - use a shelf and slope configuration for the
! DOME2D gravity current/overflow test case.
! Kelvin - flat but with rotated land mask.
! seamount - Gaussian bump for spontaneous motion test case.
! dumbbell - Sloshing channel with reservoirs on both ends.
! shelfwave - exponential slope for shelfwave test case.
! Phillips - ACC-like idealized topography used in the Phillips config.
! dense - Denmark Strait-like dense water formation and overflow.
! USER - call a user modified routine.
TOPO_FILE = "topog.nc" ! default = "topog.nc"
! The file from which the bathymetry is read.
TOPO_VARNAME = "depth" ! default = "depth"
! The name of the bathymetry variable in TOPO_FILE.
TOPO_EDITS_FILE = "" ! default = ""
! The file from which to read a list of i,j,z topography overrides.
ALLOW_LANDMASK_CHANGES = False ! [Boolean] default = False
! If true, allow topography overrides to change land mask.
MINIMUM_DEPTH = 0.5 ! [m] default = 0.0
! If MASKING_DEPTH is unspecified, then anything shallower than MINIMUM_DEPTH is
! assumed to be land and all fluxes are masked out. If MASKING_DEPTH is
! specified, then all depths shallower than MINIMUM_DEPTH but deeper than
! MASKING_DEPTH are rounded to MINIMUM_DEPTH.
MASKING_DEPTH = -9999.0 ! [m] default = -9999.0
! The depth below which to mask points as land points, for which all fluxes are
! zeroed out. MASKING_DEPTH is ignored if it has the special default value.
MAXIMUM_DEPTH = 6000.0 ! [m]
! The maximum depth of the ocean.
! === module MOM_open_boundary ===
! Controls where open boundaries are located, what kind of boundary condition to impose, and what data to apply,
! if any.
OBC_NUMBER_OF_SEGMENTS = 0 ! default = 0
! The number of open boundary segments.
CHANNEL_CONFIG = "global_1deg" ! default = "none"
! A parameter that determines which set of channels are
! restricted to specific widths. Options are:
! none - All channels have the grid width.
! global_1deg - Sets 16 specific channels appropriate
! for a 1-degree model, as used in CM2G.
! list - Read the channel locations and widths from a
! text file, like MOM_channel_list in the MOM_SIS
! test case.
! file - Read open face widths everywhere from a
! NetCDF file on the model grid.
SUBGRID_TOPO_AT_VEL = False ! [Boolean] default = False
! If true, use variables from TOPO_AT_VEL_FILE as parameters for porous barrier.
ROTATION = "2omegasinlat" ! default = "2omegasinlat"
! This specifies how the Coriolis parameter is specified:
! 2omegasinlat - Use twice the planetary rotation rate
! times the sine of latitude.
! betaplane - Use a beta-plane or f-plane.
! USER - call a user modified routine.
OMEGA = 7.2921E-05 ! [s-1] default = 7.2921E-05
! The rotation rate of the earth.
GRID_ROTATION_ANGLE_BUGS = False ! [Boolean] default = False
! If true, use an older algorithm to calculate the sine and cosines needed
! rotate between grid-oriented directions and true north and east. Differences
! arise at the tripolar fold.
! === module MOM_verticalGrid ===
! Parameters providing information about the vertical grid.
G_EARTH = 9.8 ! [m s-2] default = 9.8
! The gravitational acceleration of the Earth.
RHO_0 = 1035.0 ! [kg m-3] default = 1035.0
! The mean ocean density used with BOUSSINESQ true to calculate accelerations
! and the mass for conservation properties, or with BOUSSINSEQ false to convert
! some parameters from vertical units of m to kg m-2.
BOUSSINESQ = True ! [Boolean] default = True
! If true, make the Boussinesq approximation.
ANGSTROM = 1.0E-10 ! [m] default = 1.0E-10
! The minimum layer thickness, usually one-Angstrom.
H_TO_M = 1.0 ! [m H-1] default = 1.0
! A constant that translates the model's internal units of thickness into m.
NK = 50 ! [nondim]
! The number of model layers.
! === module MOM_tracer_registry ===
! === module MOM_EOS ===
EQN_OF_STATE = "WRIGHT" ! default = "WRIGHT"
! EQN_OF_STATE determines which ocean equation of state should be used.
! Currently, the valid choices are "LINEAR", "UNESCO", "WRIGHT", "NEMO" and
! "TEOS10". This is only used if USE_EOS is true.
EOS_QUADRATURE = False ! [Boolean] default = False
! If true, always use the generic (quadrature) code code for the integrals of
! density.
TFREEZE_FORM = "LINEAR" ! default = "LINEAR"
! TFREEZE_FORM determines which expression should be used for the freezing
! point. Currently, the valid choices are "LINEAR", "MILLERO_78", "TEOS10"
TFREEZE_S0_P0 = 0.0 ! [deg C] default = 0.0
! When TFREEZE_FORM=LINEAR, this is the freezing potential temperature at S=0,
! P=0.
DTFREEZE_DS = -0.054 ! [deg C PSU-1] default = -0.054
! When TFREEZE_FORM=LINEAR, this is the derivative of the freezing potential
! temperature with salinity.
DTFREEZE_DP = -7.75E-08 ! [deg C Pa-1] default = 0.0
! When TFREEZE_FORM=LINEAR, this is the derivative of the freezing potential
! temperature with pressure.
! === module MOM_restart ===
PARALLEL_RESTARTFILES = False ! [Boolean] default = False
! If true, the IO layout is used to group processors that write to the same
! restart file or each processor writes its own (numbered) restart file. If
! false, a single restart file is generated combining output from all PEs.
RESTARTFILE = "MOM.res" ! default = "MOM.res"
! The name-root of the restart file.
MAX_FIELDS = 100 ! default = 100
! The maximum number of restart fields that can be used.
RESTART_CHECKSUMS_REQUIRED = True ! [Boolean] default = True
! If true, require the restart checksums to match and error out otherwise. Users
! may want to avoid this comparison if for example the restarts are made from a
! run with a different mask_table than the current run, in which case the
! checksums will not match and cause crash.
! === module MOM_tracer_flow_control ===
USE_USER_TRACER_EXAMPLE = False ! [Boolean] default = False
! If true, use the USER_tracer_example tracer package.
USE_DOME_TRACER = False ! [Boolean] default = False
! If true, use the DOME_tracer tracer package.
USE_ISOMIP_TRACER = False ! [Boolean] default = False
! If true, use the ISOMIP_tracer tracer package.
USE_RGC_TRACER = False ! [Boolean] default = False
! If true, use the RGC_tracer tracer package.
USE_IDEAL_AGE_TRACER = True ! [Boolean] default = False
! If true, use the ideal_age_example tracer package.
USE_REGIONAL_DYES = False ! [Boolean] default = False
! If true, use the regional_dyes tracer package.
USE_OIL_TRACER = False ! [Boolean] default = False
! If true, use the oil_tracer tracer package.
USE_ADVECTION_TEST_TRACER = False ! [Boolean] default = False
! If true, use the advection_test_tracer tracer package.
USE_OCMIP2_CFC = False ! [Boolean] default = False
! If true, use the MOM_OCMIP2_CFC tracer package.
USE_CFC_CAP = False ! [Boolean] default = False
! If true, use the MOM_CFC_cap tracer package.
USE_generic_tracer = False ! [Boolean] default = False
! If true and _USE_GENERIC_TRACER is defined as a preprocessor macro, use the
! MOM_generic_tracer packages.
USE_PSEUDO_SALT_TRACER = False ! [Boolean] default = False
! If true, use the pseudo salt tracer, typically run as a diagnostic.
USE_BOUNDARY_IMPULSE_TRACER = False ! [Boolean] default = False
! If true, use the boundary impulse tracer.
USE_DYED_OBC_TRACER = False ! [Boolean] default = False
! If true, use the dyed_obc_tracer tracer package.
USE_NW2_TRACERS = False ! [Boolean] default = False
! If true, use the NeverWorld2 tracers.
! === module ideal_age_example ===
DO_IDEAL_AGE = True ! [Boolean] default = True
! If true, use an ideal age tracer that is set to 0 age in the boundary layer
! and ages at unit rate in the interior.
DO_IDEAL_VINTAGE = False ! [Boolean] default = False
! If true, use an ideal vintage tracer that is set to an exponentially
! increasing value in the boundary layer and is conserved thereafter.
DO_IDEAL_AGE_DATED = False ! [Boolean] default = False
! If true, use an ideal age tracer that is everywhere 0 before
! IDEAL_AGE_DATED_START_YEAR, but the behaves like the standard ideal age tracer
! - i.e. is set to 0 age in the boundary layer and ages at unit rate in the
! interior.
DO_BL_RESIDENCE = False ! [Boolean] default = False
! If true, use a residence tracer that is set to 0 age in the interior and ages
! at unit rate in the boundary layer.
USE_REAL_BL_DEPTH = False ! [Boolean] default = False
! If true, the ideal age tracers will use the boundary layer depth diagnosed
! from the BL or bulkmixedlayer scheme.
AGE_IC_FILE = "" ! default = ""
! The file in which the age-tracer initial values can be found, or an empty
! string for internal initialization.
AGE_IC_FILE_IS_Z = False ! [Boolean] default = False
! If true, AGE_IC_FILE is in depth space, not layer space
TRACERS_MAY_REINIT = False ! [Boolean] default = False
! If true, tracers may go through the initialization code if they are not found
! in the restart files. Otherwise it is a fatal error if the tracers are not
! found in the restart files of a restarted run.
! === module MOM_coord_initialization ===
COORD_CONFIG = "none" ! default = "none"
! This specifies how layers are to be defined:
! ALE or none - used to avoid defining layers in ALE mode
! file - read coordinate information from the file
! specified by (COORD_FILE).
! BFB - Custom coords for buoyancy-forced basin case
! based on SST_S, T_BOT and DRHO_DT.
! linear - linear based on interfaces not layers
! layer_ref - linear based on layer densities
! ts_ref - use reference temperature and salinity
! ts_range - use range of temperature and salinity
! (T_REF and S_REF) to determine surface density
! and GINT calculate internal densities.
! gprime - use reference density (RHO_0) for surface
! density and GINT calculate internal densities.
! ts_profile - use temperature and salinity profiles
! (read from COORD_FILE) to set layer densities.
! USER - call a user modified routine.
GFS = 9.8 ! [m s-2] default = 9.8
! The reduced gravity at the free surface.
REMAP_UV_USING_OLD_ALG = False ! [Boolean] default = False
! If true, uses the old remapping-via-a-delta-z method for remapping u and v. If
! false, uses the new method that remaps between grids described by an old and
! new thickness.
REGRIDDING_COORDINATE_MODE = "ZSTAR" ! default = "LAYER"
! Coordinate mode for vertical regridding. Choose among the following
! possibilities: LAYER - Isopycnal or stacked shallow water layers
! ZSTAR, Z* - stretched geopotential z*
! SIGMA_SHELF_ZSTAR - stretched geopotential z* ignoring shelf
! SIGMA - terrain following coordinates
! RHO - continuous isopycnal
! HYCOM1 - HyCOM-like hybrid coordinate
! HYBGEN - Hybrid coordinate from the Hycom hybgen code
! SLIGHT - stretched coordinates above continuous isopycnal
! ADAPTIVE - optimize for smooth neutral density surfaces
REGRIDDING_COORDINATE_UNITS = "m" ! default = "m"
! Units of the regridding coordinate.
ALE_COORDINATE_CONFIG = "FILE:ocean_vgrid.nc,interfaces=zeta" ! default = "UNIFORM"
! Determines how to specify the coordinate resolution. Valid options are:
! PARAM - use the vector-parameter ALE_RESOLUTION
! UNIFORM[:N] - uniformly distributed
! FILE:string - read from a file. The string specifies
! the filename and variable name, separated
! by a comma or space, e.g. FILE:lev.nc,dz
! or FILE:lev.nc,interfaces=zw
! WOA09[:N] - the WOA09 vertical grid (approximately)
! FNC1:string - FNC1:dz_min,H_total,power,precision
! HYBRID:string - read from a file. The string specifies
! the filename and two variable names, separated
! by a comma or space, for sigma-2 and dz. e.g.
! HYBRID:vgrid.nc,sigma2,dz
!ALE_RESOLUTION = 2.303499698638916, 2.6903486251831055, 3.1421399116516113, 3.6697616577148438, 4.285917282104492, 5.005424499511719, 5.845563888549805, 6.826459884643555, 7.971549987792969, 9.308074951171875, 10.867660522460938, 12.686931610107422, 14.808158874511719, 17.279945373535156, 20.157821655273438, 23.504684448242188, 27.390975952148438, 31.894271850585938, 37.097900390625, 43.088226318359375, 49.94970703125, 57.757049560546875, 66.56375122070312, 76.386962890625, 87.18865966796875, 98.85760498046875, 111.1953125, 123.914794921875, 136.6578369140625, 149.03271484375, 160.6646728515625, 171.2481689453125, 180.5816650390625, 188.5797119140625, 195.2608642578125, 200.720703125, 205.10205078125, 208.565185546875, 211.2705078125, 213.363525390625, 214.97119140625, 216.198974609375, 217.13232421875, 217.83984375, 218.37451171875, 218.7783203125, 219.08203125, 219.310546875, 219.482421875, 219.6123046875 ! [m]
MIN_THICKNESS = 0.001 ! [m] default = 0.001
! When regridding, this is the minimum layer thickness allowed.
REMAPPING_SCHEME = "PPM_H4" ! default = "PLM"
! This sets the reconstruction scheme used for vertical remapping for all
! variables. It can be one of the following schemes: PCM (1st-order
! accurate)
! PLM (2nd-order accurate)
! PLM_HYBGEN (2nd-order accurate)
! PPM_H4 (3rd-order accurate)
! PPM_IH4 (3rd-order accurate)
! PPM_HYBGEN (3rd-order accurate)
! WENO_HYBGEN (3rd-order accurate)
! PQM_IH4IH3 (4th-order accurate)
! PQM_IH6IH5 (5th-order accurate)
VELOCITY_REMAPPING_SCHEME = "PPM_H4" ! default = "PPM_H4"
! This sets the reconstruction scheme used for vertical remapping of velocities.
! By default it is the same as REMAPPING_SCHEME. It can be one of the following
! schemes: PCM (1st-order accurate)
! PLM (2nd-order accurate)
! PLM_HYBGEN (2nd-order accurate)
! PPM_H4 (3rd-order accurate)
! PPM_IH4 (3rd-order accurate)
! PPM_HYBGEN (3rd-order accurate)
! WENO_HYBGEN (3rd-order accurate)
! PQM_IH4IH3 (4th-order accurate)
! PQM_IH6IH5 (5th-order accurate)
FATAL_CHECK_RECONSTRUCTIONS = False ! [Boolean] default = False
! If true, cell-by-cell reconstructions are checked for consistency and if
! non-monotonicity or an inconsistency is detected then a FATAL error is issued.
FATAL_CHECK_REMAPPING = False ! [Boolean] default = False
! If true, the results of remapping are checked for conservation and new extrema
! and if an inconsistency is detected then a FATAL error is issued.
REMAP_BOUND_INTERMEDIATE_VALUES = False ! [Boolean] default = False
! If true, the values on the intermediate grid used for remapping are forced to
! be bounded, which might not be the case due to round off.
REMAP_BOUNDARY_EXTRAP = False ! [Boolean] default = False
! If true, values at the interfaces of boundary cells are extrapolated instead
! of piecewise constant
REMAPPING_2018_ANSWERS = False ! [Boolean] default = False
! If true, use the order of arithmetic and expressions that recover the answers
! from the end of 2018. Otherwise, use updated and more robust forms of the
! same expressions.
REMAPPING_ANSWER_DATE = 99991231 ! default = 99991231
! The vintage of the expressions and order of arithmetic to use for remapping.
! Values below 20190101 result in the use of older, less accurate expressions
! that were in use at the end of 2018. Higher values result in the use of more
! robust and accurate forms of mathematically equivalent expressions. If both
! REMAPPING_2018_ANSWERS and REMAPPING_ANSWER_DATE are specified, the latter
! takes precedence.
PARTIAL_CELL_VELOCITY_REMAP = False ! [Boolean] default = False
! If true, use partial cell thicknesses at velocity points that are masked out
! where they extend below the shallower of the neighboring bathymetry for
! remapping velocity.
REMAP_AFTER_INITIALIZATION = True ! [Boolean] default = True
! If true, applies regridding and remapping immediately after initialization so
! that the state is ALE consistent. This is a legacy step and should not be
! needed if the initialization is consistent with the coordinate mode.
REGRID_TIME_SCALE = 0.0 ! [s] default = 0.0
! The time-scale used in blending between the current (old) grid and the target
! (new) grid. A short time-scale favors the target grid (0. or anything less
! than DT_THERM) has no memory of the old grid. A very long time-scale makes the
! model more Lagrangian.
REGRID_FILTER_SHALLOW_DEPTH = 0.0 ! [m] default = 0.0
! The depth above which no time-filtering is applied. Above this depth final
! grid exactly matches the target (new) grid.
REGRID_FILTER_DEEP_DEPTH = 0.0 ! [m] default = 0.0
! The depth below which full time-filtering is applied with time-scale
! REGRID_TIME_SCALE. Between depths REGRID_FILTER_SHALLOW_DEPTH and
! REGRID_FILTER_SHALLOW_DEPTH the filter weights adopt a cubic profile.
REMAP_VEL_MASK_BBL_THICK = -0.001 ! [m] default = -0.001
! A thickness of a bottom boundary layer below which velocities in thin layers
! are zeroed out after remapping, following practice with Hybgen remapping, or a
! negative value to avoid such filtering altogether.
! === module MOM_state_initialization ===
FATAL_INCONSISTENT_RESTART_TIME = False ! [Boolean] default = False
! If true and a time_in value is provided to MOM_initialize_state, verify that
! the time read from a restart file is the same as time_in, and issue a fatal
! error if it is not. Otherwise, simply set the time to time_in if present.
INIT_LAYERS_FROM_Z_FILE = True ! [Boolean] default = False
! If true, initialize the layer thicknesses, temperatures, and salinities from a
! Z-space file on a latitude-longitude grid.
! === module MOM_initialize_layers_from_Z ===
TEMP_SALT_Z_INIT_FILE = "ocean_temp_salt.res.nc" ! default = "temp_salt_z.nc"
! The name of the z-space input file used to initialize temperatures (T) and
! salinities (S). If T and S are not in the same file, TEMP_Z_INIT_FILE and
! SALT_Z_INIT_FILE must be set.
TEMP_Z_INIT_FILE = "ocean_temp_salt.res.nc" ! default = "ocean_temp_salt.res.nc"
! The name of the z-space input file used to initialize temperatures, only.
SALT_Z_INIT_FILE = "ocean_temp_salt.res.nc" ! default = "ocean_temp_salt.res.nc"
! The name of the z-space input file used to initialize temperatures, only.
Z_INIT_FILE_PTEMP_VAR = "temp" ! default = "ptemp"
! The name of the potential temperature variable in TEMP_Z_INIT_FILE.
Z_INIT_FILE_SALT_VAR = "salt" ! default = "salt"
! The name of the salinity variable in SALT_Z_INIT_FILE.
Z_INIT_HOMOGENIZE = False ! [Boolean] default = False
! If True, then horizontally homogenize the interpolated initial conditions.
Z_INIT_ALE_REMAPPING = True ! [Boolean] default = False
! If True, then remap straight to model coordinate from file.
Z_INIT_REMAPPING_SCHEME = "PPM_IH4" ! default = "PPM_IH4"
! The remapping scheme to use if using Z_INIT_ALE_REMAPPING is True.
Z_INIT_REMAP_GENERAL = False ! [Boolean] default = False
! If false, only initializes to z* coordinates. If true, allows initialization
! directly to general coordinates.
Z_INIT_REMAP_FULL_COLUMN = False ! [Boolean] default = False
! If false, only reconstructs profiles for valid data points. If true, inserts
! vanished layers below the valid data.
Z_INIT_REMAP_OLD_ALG = False ! [Boolean] default = False
! If false, uses the preferred remapping algorithm for initialization. If true,
! use an older, less robust algorithm for remapping.
TEMP_SALT_INIT_VERTICAL_REMAP_ONLY = True ! [Boolean] default = False
! If true, initial conditions are on the model horizontal grid. Extrapolation
! over missing ocean values is done using an ICE-9 procedure with vertical ALE
! remapping .
HOR_REGRID_2018_ANSWERS = False ! [Boolean] default = False
! If true, use the order of arithmetic for horizonal regridding that recovers
! the answers from the end of 2018. Otherwise, use rotationally symmetric forms
! of the same expressions.
HOR_REGRID_ANSWER_DATE = 99991231 ! default = 99991231
! The vintage of the order of arithmetic for horizontal regridding. Dates
! before 20190101 give the same answers as the code did in late 2018, while
! later versions add parentheses for rotational symmetry. If both
! HOR_REGRID_2018_ANSWERS and HOR_REGRID_ANSWER_DATE are specified, the latter
! takes precedence.
DEPRESS_INITIAL_SURFACE = False ! [Boolean] default = False
! If true, depress the initial surface to avoid huge tsunamis when a large
! surface pressure is applied.
TRIM_IC_FOR_P_SURF = False ! [Boolean] default = False
! If true, cuts way the top of the column for initial conditions at the depth
! where the hydrostatic pressure matches the imposed surface pressure which is
! read from file.
VELOCITY_CONFIG = "zero" ! default = "zero"
! A string that determines how the initial velocities are specified for a new
! run:
! file - read velocities from the file specified
! by (VELOCITY_FILE).
! zero - the fluid is initially at rest.
! uniform - the flow is uniform (determined by
! parameters INITIAL_U_CONST and INITIAL_V_CONST).
! rossby_front - a mixed layer front in thermal wind balance.
! soliton - Equatorial Rossby soliton.
! USER - call a user modified routine.
CONVERT_THICKNESS_UNITS = False ! [Boolean] default = False
! If true, convert the thickness initial conditions from units of m to kg m-2
! or vice versa, depending on whether BOUSSINESQ is defined. This does not apply
! if a restart file is read.
REGRID_ACCELERATE_INIT = False ! [Boolean] default = False
! If true, runs REGRID_ACCELERATE_ITERATIONS iterations of the regridding
! algorithm to push the initial grid to be consistent with the initial
! condition. Useful only for state-based and iterative coordinates.
ODA_INCUPD = False ! [Boolean] default = False
! If true, oda incremental updates will be applied everywhere in the domain.
SPONGE = False ! [Boolean] default = False
! If true, sponges may be applied anywhere in the domain. The exact location and
! properties of those sponges are specified via SPONGE_CONFIG.
! === module MOM_diag_mediator ===
NUM_DIAG_COORDS = 1 ! default = 1
! The number of diagnostic vertical coordinates to use. For each coordinate, an
! entry in DIAG_COORDS must be provided.
USE_GRID_SPACE_DIAGNOSTIC_AXES = False ! [Boolean] default = False
! If true, use a grid index coordinate convention for diagnostic axes.
DIAG_COORDS = "z Z ZSTAR" ! default = "z Z ZSTAR"
! A list of string tuples associating diag_table modules to a coordinate
! definition used for diagnostics. Each string is of the form "MODULE_SUFFIX
! PARAMETER_SUFFIX COORDINATE_NAME".
DIAG_MISVAL = 1.0E+20 ! [not defined] default = 1.0E+20
! Set the default missing value to use for diagnostics.
DIAG_AS_CHKSUM = False ! [Boolean] default = False
! Instead of writing diagnostics to the diag manager, write a text file
! containing the checksum (bitcount) of the array.
AVAILABLE_DIAGS_FILE = "available_diags.000000" ! default = "available_diags.000000"
! A file into which to write a list of all available ocean diagnostics that can
! be included in a diag_table.
DIAG_COORD_DEF_Z = "FILE:ocean_vgrid.nc,interfaces=zeta" ! default = "WOA09"
! Determines how to specify the coordinate resolution. Valid options are:
! PARAM - use the vector-parameter DIAG_COORD_RES_Z
! UNIFORM[:N] - uniformly distributed
! FILE:string - read from a file. The string specifies
! the filename and variable name, separated
! by a comma or space, e.g. FILE:lev.nc,dz
! or FILE:lev.nc,interfaces=zw
! WOA09[:N] - the WOA09 vertical grid (approximately)
! FNC1:string - FNC1:dz_min,H_total,power,precision
! HYBRID:string - read from a file. The string specifies
! the filename and two variable names, separated
! by a comma or space, for sigma-2 and dz. e.g.
! HYBRID:vgrid.nc,sigma2,dz
! === module MOM_MEKE ===
USE_MEKE = True ! [Boolean] default = False
! If true, turns on the MEKE scheme which calculates a sub-grid mesoscale eddy
! kinetic energy budget.
MEKE_IN_DYNAMICS = True ! [Boolean] default = True
! If true, step MEKE forward with the dynamicsotherwise with the tracer
! timestep.
EKE_SOURCE = "prog" ! default = "prog"
! Determine the where EKE comes from:
! 'prog': Calculated solving EKE equation
! 'file': Read in from a file
! 'dbclient': Retrieved from ML-database
MEKE_DAMPING = 0.0 ! [s-1] default = 0.0
! The local depth-independent MEKE dissipation rate.
MEKE_CD_SCALE = 0.0 ! [nondim] default = 0.0
! The ratio of the bottom eddy velocity to the column mean eddy velocity, i.e.
! sqrt(2*MEKE). This should be less than 1 to account for the surface
! intensification of MEKE.
MEKE_CB = 25.0 ! [nondim] default = 25.0
! A coefficient in the expression for the ratio of bottom projected eddy energy
! and mean column energy (see Jansen et al. 2015).
MEKE_MIN_GAMMA2 = 1.0E-04 ! [nondim] default = 1.0E-04
! The minimum allowed value of gamma_b^2.
MEKE_CT = 50.0 ! [nondim] default = 50.0
! A coefficient in the expression for the ratio of barotropic eddy energy and
! mean column energy (see Jansen et al. 2015).
MEKE_GMCOEFF = 0.0 ! [nondim] default = -1.0
! The efficiency of the conversion of potential energy into MEKE by the
! thickness mixing parameterization. If MEKE_GMCOEFF is negative, this
! conversion is not used or calculated.
MEKE_GEOMETRIC = True ! [Boolean] default = False
! If MEKE_GEOMETRIC is true, uses the GM coefficient formulation from the
! GEOMETRIC framework (Marshall et al., 2012).
MEKE_GEOMETRIC_ALPHA = 0.05 ! [nondim] default = 0.05
! The nondimensional coefficient governing the efficiency of the GEOMETRIC
! thickness diffusion.
MEKE_EQUILIBRIUM_ALT = True ! [Boolean] default = False
! If true, use an alternative formula for computing the (equilibrium)initial
! value of MEKE.
MEKE_EQUILIBRIUM_RESTORING = True ! [Boolean] default = False
! If true, restore MEKE back to its equilibrium value, which is calculated at
! each time step.
MEKE_RESTORING_TIMESCALE = 1.0E+07 ! [s] default = 1.0E+06
! The timescale used to nudge MEKE toward its equilibrium value.
MEKE_FRCOEFF = -1.0 ! [nondim] default = -1.0
! The efficiency of the conversion of mean energy into MEKE. If MEKE_FRCOEFF is
! negative, this conversion is not used or calculated.
MEKE_GMECOEFF = -1.0 ! [nondim] default = -1.0
! The efficiency of the conversion of MEKE into mean energy by GME. If
! MEKE_GMECOEFF is negative, this conversion is not used or calculated.
MEKE_BGSRC = 0.0 ! [W kg-1] default = 0.0
! A background energy source for MEKE.
MEKE_KH = -1.0 ! [m2 s-1] default = -1.0
! A background lateral diffusivity of MEKE. Use a negative value to not apply
! lateral diffusion to MEKE.
MEKE_K4 = -1.0 ! [m4 s-1] default = -1.0
! A lateral bi-harmonic diffusivity of MEKE. Use a negative value to not apply
! bi-harmonic diffusion to MEKE.
MEKE_DTSCALE = 1.0 ! [nondim] default = 1.0
! A scaling factor to accelerate the time evolution of MEKE.
MEKE_KHCOEFF = 1.0 ! [nondim] default = 1.0
! A scaling factor in the expression for eddy diffusivity which is otherwise
! proportional to the MEKE velocity- scale times an eddy mixing-length. This
! factor must be >0 for MEKE to contribute to the thickness/ and tracer
! diffusivity in the rest of the model.
MEKE_USCALE = 0.0 ! [m s-1] default = 0.0
! The background velocity that is combined with MEKE to calculate the bottom
! drag.
MEKE_GM_SRC_ALT = False ! [Boolean] default = False
! If true, use the GM energy conversion form S^2*N^2*kappa rather than the
! streamfunction for the MEKE GM source term.
MEKE_VISC_DRAG = False ! [Boolean] default = True
! If true, use the vertvisc_type to calculate the bottom drag acting on MEKE.
MEKE_KHTH_FAC = 1.0 ! [nondim] default = 0.0
! A factor that maps MEKE%Kh to KhTh.
MEKE_KHTR_FAC = 1.0 ! [nondim] default = 0.0
! A factor that maps MEKE%Kh to KhTr.
MEKE_KHMEKE_FAC = 0.5 ! [nondim] default = 0.0
! A factor that maps MEKE%Kh to Kh for MEKE itself.
MEKE_OLD_LSCALE = False ! [Boolean] default = False
! If true, use the old formula for length scale which is a function of grid
! spacing and deformation radius.
MEKE_MIN_LSCALE = True ! [Boolean] default = False
! If true, use a strict minimum of provided length scales rather than harmonic
! mean.
MEKE_RD_MAX_SCALE = False ! [nondim] default = False
! If true, the length scale used by MEKE is the minimum of the deformation
! radius or grid-spacing. Only used if MEKE_OLD_LSCALE=True
MEKE_VISCOSITY_COEFF_KU = 0.2 ! [nondim] default = 0.0
! If non-zero, is the scaling coefficient in the expression forviscosity used to
! parameterize harmonic lateral momentum mixing byunresolved eddies represented
! by MEKE. Can be negative torepresent backscatter from the unresolved eddies.
MEKE_VISCOSITY_COEFF_AU = 0.0 ! [nondim] default = 0.0
! If non-zero, is the scaling coefficient in the expression forviscosity used to
! parameterize biharmonic lateral momentum mixing byunresolved eddies
! represented by MEKE. Can be negative torepresent backscatter from the
! unresolved eddies.
MEKE_FIXED_MIXING_LENGTH = 0.0 ! [m] default = 0.0
! If positive, is a fixed length contribution to the expression for mixing
! length used in MEKE-derived diffusivity.
MEKE_FIXED_TOTAL_DEPTH = True ! [Boolean] default = True
! If true, use the nominal bathymetric depth as the estimate of the time-varying
! ocean depth. Otherwise base the depth on the total ocean massper unit area.
MEKE_ALPHA_DEFORM = 1.0 ! [nondim] default = 0.0
! If positive, is a coefficient weighting the deformation scale in the
! expression for mixing length used in MEKE-derived diffusivity.
MEKE_ALPHA_RHINES = 1.0 ! [nondim] default = 0.0
! If positive, is a coefficient weighting the Rhines scale in the expression for
! mixing length used in MEKE-derived diffusivity.
MEKE_ALPHA_EADY = 1.0 ! [nondim] default = 0.0
! If positive, is a coefficient weighting the Eady length scale in the
! expression for mixing length used in MEKE-derived diffusivity.
MEKE_ALPHA_FRICT = 1.0 ! [nondim] default = 0.0
! If positive, is a coefficient weighting the frictional arrest scale in the
! expression for mixing length used in MEKE-derived diffusivity.
MEKE_ALPHA_GRID = 1.0 ! [nondim] default = 0.0
! If positive, is a coefficient weighting the grid-spacing as a scale in the
! expression for mixing length used in MEKE-derived diffusivity.
MEKE_COLD_START = False ! [Boolean] default = False
! If true, initialize EKE to zero. Otherwise a local equilibrium solution is
! used as an initial condition for EKE.
MEKE_BACKSCAT_RO_C = 0.0 ! [nondim] default = 0.0
! The coefficient in the Rossby number function for scaling the biharmonic
! frictional energy source. Setting to non-zero enables the Rossby number
! function.
MEKE_BACKSCAT_RO_POW = 0.0 ! [nondim] default = 0.0
! The power in the Rossby number function for scaling the biharmonic frictional
! energy source.
MEKE_ADVECTION_FACTOR = 1.0 ! [nondim] default = 0.0
! A scale factor in front of advection of eddy energy. Zero turns advection off.
! Using unity would be normal but other values could accommodate a mismatch
! between the advecting barotropic flow and the vertical structure of MEKE.
MEKE_ADVECTION_BUG = False ! [Boolean] default = False
! If true, recover a bug in the calculation of the barotropic transport for the
! advection of MEKE. With the bug, only the transports in the deepest layer are
! used.
MEKE_TOPOGRAPHIC_BETA = 0.0 ! [nondim] default = 0.0
! A scale factor to determine how much topographic beta is weighed in computing
! beta in the expression of Rhines scale. Use 1 if full topographic beta effect
! is considered; use 0 if it's completely ignored.
CDRAG = 0.003 ! [nondim] default = 0.003
! CDRAG is the drag coefficient relating the magnitude of the velocity field to
! the bottom stress.
MEKE_CDRAG = 0.003 ! [nondim] default = 0.003
! Drag coefficient relating the magnitude of the velocity field to the bottom
! stress in MEKE.
! === module MOM_lateral_mixing_coeffs ===
USE_VARIABLE_MIXING = True ! [Boolean] default = False
! If true, the variable mixing code will be called. This allows diagnostics to
! be created even if the scheme is not used. If KHTR_SLOPE_CFF>0 or
! KhTh_Slope_Cff>0, this is set to true regardless of what is in the parameter
! file.
USE_VISBECK = False ! [Boolean] default = False
! If true, use the Visbeck et al. (1997) formulation for
! thickness diffusivity.
RESOLN_SCALED_KH = True ! [Boolean] default = False
! If true, the Laplacian lateral viscosity is scaled away when the first
! baroclinic deformation radius is well resolved.
DEPTH_SCALED_KHTH = False ! [Boolean] default = False
! If true, KHTH is scaled away when the depth is shallowerthan a reference
! depth: KHTH = MIN(1,H/H0)**N * KHTH, where H0 is a reference depth, controlled
! via DEPTH_SCALED_KHTH_H0, and the exponent (N) is controlled via
! DEPTH_SCALED_KHTH_EXP.
RESOLN_SCALED_KHTH = True ! [Boolean] default = False
! If true, the interface depth diffusivity is scaled away when the first
! baroclinic deformation radius is well resolved.
RESOLN_SCALED_KHTR = False ! [Boolean] default = False
! If true, the epipycnal tracer diffusivity is scaled away when the first
! baroclinic deformation radius is well resolved.
RESOLN_USE_EBT = False ! [Boolean] default = False
! If true, uses the equivalent barotropic wave speed instead of first baroclinic
! wave for calculating the resolution fn.
KHTH_USE_EBT_STRUCT = True ! [Boolean] default = False
! If true, uses the equivalent barotropic structure as the vertical structure of
! thickness diffusivity.
KHTH_SLOPE_CFF = 0.01 ! [nondim] default = 0.0
! The nondimensional coefficient in the Visbeck formula for the interface depth
! diffusivity
KHTR_SLOPE_CFF = 0.0 ! [nondim] default = 0.0
! The nondimensional coefficient in the Visbeck formula for the epipycnal tracer
! diffusivity
USE_STORED_SLOPES = True ! [Boolean] default = False
! If true, the isopycnal slopes are calculated once and stored for re-use. This
! uses more memory but avoids calling the equation of state more times than
! should be necessary.
VERY_SMALL_FREQUENCY = 1.0E-17 ! [s-1] default = 1.0E-17
! A miniscule frequency that is used to avoid division by 0. The default value
! is roughly (pi / (the age of the universe)).
USE_STANLEY_ISO = False ! [Boolean] default = False
! If true, turn on Stanley SGS T variance parameterization in isopycnal slope
! code.
RESOLN_N2_FILTER_DEPTH = 2000.0 ! [m] default = 2000.0
! The depth below which N2 is monotonized to avoid stratification artifacts from
! altering the equivalent barotropic mode structure.
VISBECK_MAX_SLOPE = 0.0 ! [nondim] default = 0.0
! If non-zero, is an upper bound on slopes used in the Visbeck formula for
! diffusivity. This does not affect the isopycnal slope calculation used within
! thickness diffusion.
KD_SMOOTH = 1.0E-06 ! [m2 s-1] default = 1.0E-06
! A diapycnal diffusivity that is used to interpolate more sensible values of T
! & S into thin layers.
USE_SIMPLER_EADY_GROWTH_RATE = False ! [Boolean] default = False
! If true, use a simpler method to calculate the Eady growth rate that avoids
! division by layer thickness. Recommended.
VARMIX_KTOP = 2 ! [nondim] default = 2
! The layer number at which to start vertical integration of S*N for purposes of
! finding the Eady growth rate.
VISBECK_L_SCALE = 0.0 ! [m] default = 0.0
! The fixed length scale in the Visbeck formula.
KH_RES_SCALE_COEF = 0.4 ! [nondim] default = 1.0
! A coefficient that determines how KhTh is scaled away if RESOLN_SCALED_... is
! true, as F = 1 / (1 + (KH_RES_SCALE_COEF*Rd/dx)^KH_RES_FN_POWER).
KH_RES_FN_POWER = 2 ! [nondim] default = 2
! The power of dx/Ld in the Kh resolution function. Any positive integer may be
! used, although even integers are more efficient to calculate. Setting this
! greater than 100 results in a step-function being used.
VISC_RES_SCALE_COEF = 0.4 ! [nondim] default = 0.4
! A coefficient that determines how Kh is scaled away if RESOLN_SCALED_... is
! true, as F = 1 / (1 + (KH_RES_SCALE_COEF*Rd/dx)^KH_RES_FN_POWER). This
! function affects lateral viscosity, Kh, and not KhTh.
VISC_RES_FN_POWER = 2 ! [nondim] default = 2
! The power of dx/Ld in the Kh resolution function. Any positive integer may be
! used, although even integers are more efficient to calculate. Setting this
! greater than 100 results in a step-function being used. This function affects
! lateral viscosity, Kh, and not KhTh.
INTERPOLATE_RES_FN = False ! [Boolean] default = False
! If true, interpolate the resolution function to the velocity points from the
! thickness points; otherwise interpolate the wave speed and calculate the
! resolution function independently at each point.
GILL_EQUATORIAL_LD = True ! [Boolean] default = True
! If true, uses Gill's definition of the baroclinic equatorial deformation
! radius, otherwise, if false, use Pedlosky's definition. These definitions
! differ by a factor of 2 in front of the beta term in the denominator. Gill's
! is the more appropriate definition.
INTERNAL_WAVE_SPEED_TOL = 0.001 ! [nondim] default = 0.001
! The fractional tolerance for finding the wave speeds.
INTERNAL_WAVE_SPEED_MIN = 0.0 ! [m s-1] default = 0.0
! A floor in the first mode speed below which 0 used instead.
INTERNAL_WAVE_SPEED_BETTER_EST = True ! [Boolean] default = True
! If true, use a more robust estimate of the first mode wave speed as the
! starting point for iterations.
USE_QG_LEITH_GM = False ! [Boolean] default = False
! If true, use the QG Leith viscosity as the GM coefficient.
! === module MOM_set_visc ===
SET_VISC_2018_ANSWERS = False ! [Boolean] default = False
! If true, use the order of arithmetic and expressions that recover the answers
! from the end of 2018. Otherwise, use updated and more robust forms of the
! same expressions.
SET_VISC_ANSWER_DATE = 99991231 ! default = 99991231
! The vintage of the order of arithmetic and expressions in the set viscosity
! calculations. Values below 20190101 recover the answers from the end of 2018,
! while higher values use updated and more robust forms of the same expressions.
! If both SET_VISC_2018_ANSWERS and SET_VISC_ANSWER_DATE are specified, the
! latter takes precedence.
BOTTOMDRAGLAW = True ! [Boolean] default = True
! If true, the bottom stress is calculated with a drag law of the form
! c_drag*|u|*u. The velocity magnitude may be an assumed value or it may be
! based on the actual velocity in the bottommost HBBL, depending on LINEAR_DRAG.
DRAG_AS_BODY_FORCE = False ! [Boolean] default = False
! If true, the bottom stress is imposed as an explicit body force applied over a
! fixed distance from the bottom, rather than as an implicit calculation based
! on an enhanced near-bottom viscosity. The thickness of the bottom boundary
! layer is HBBL.
CHANNEL_DRAG = True ! [Boolean] default = False
! If true, the bottom drag is exerted directly on each layer proportional to the
! fraction of the bottom it overlies.
LINEAR_DRAG = False ! [Boolean] default = False
! If LINEAR_DRAG and BOTTOMDRAGLAW are defined the drag law is
! cdrag*DRAG_BG_VEL*u.
PRANDTL_TURB = 1.0 ! [nondim] default = 1.0
! The turbulent Prandtl number applied to shear instability.
DYNAMIC_VISCOUS_ML = False ! [Boolean] default = False
! If true, use a bulk Richardson number criterion to determine the mixed layer
! thickness for viscosity.
HBBL = 10.0 ! [m]
! The thickness of a bottom boundary layer with a viscosity increased by
! KV_EXTRA_BBL if BOTTOMDRAGLAW is not defined, or the thickness over which
! near-bottom velocities are averaged for the drag law if BOTTOMDRAGLAW is
! defined but LINEAR_DRAG is not.
BBL_USE_TIDAL_BG = False ! [Boolean] default = False
! Flag to use the tidal RMS amplitude in place of constant background velocity
! for computing u* in the BBL. This flag is only used when BOTTOMDRAGLAW is true
! and LINEAR_DRAG is false.
DRAG_BG_VEL = 0.1 ! [m s-1] default = 0.0
! DRAG_BG_VEL is either the assumed bottom velocity (with LINEAR_DRAG) or an
! unresolved velocity that is combined with the resolved velocity to estimate
! the velocity magnitude. DRAG_BG_VEL is only used when BOTTOMDRAGLAW is
! defined.
BBL_USE_EOS = True ! [Boolean] default = True
! If true, use the equation of state in determining the properties of the bottom
! boundary layer. Otherwise use the layer target potential densities. The
! default of this parameter is the value of USE_EOS.
BBL_THICK_MIN = 0.1 ! [m] default = 0.0
! The minimum bottom boundary layer thickness that can be used with
! BOTTOMDRAGLAW. This might be Kv/(cdrag*drag_bg_vel) to give Kv as the minimum
! near-bottom viscosity.
HTBL_SHELF_MIN = 0.1 ! [m] default = 0.1
! The minimum top boundary layer thickness that can be used with BOTTOMDRAGLAW.
! This might be Kv/(cdrag*drag_bg_vel) to give Kv as the minimum near-top
! viscosity.
HTBL_SHELF = 10.0 ! [m] default = 10.0
! The thickness over which near-surface velocities are averaged for the drag law
! under an ice shelf. By default this is the same as HBBL
KV = 1.0E-04 ! [m2 s-1]
! The background kinematic viscosity in the interior. The molecular value, ~1e-6
! m2 s-1, may be used.
KV_BBL_MIN = 1.0E-04 ! [m2 s-1] default = 1.0E-04
! The minimum viscosities in the bottom boundary layer.
KV_TBL_MIN = 1.0E-04 ! [m2 s-1] default = 1.0E-04
! The minimum viscosities in the top boundary layer.
CORRECT_BBL_BOUNDS = False ! [Boolean] default = False
! If true, uses the correct bounds on the BBL thickness and viscosity so that
! the bottom layer feels the intended drag.
SMAG_CONST_CHANNEL = 0.15 ! [nondim] default = 0.15
! The nondimensional Laplacian Smagorinsky constant used in calculating the
! channel drag if it is enabled. The default is to use the same value as
! SMAG_LAP_CONST if it is defined, or 0.15 if it is not. The value used is also
! 0.15 if the specified value is negative.
CHANNEL_DRAG_MAX_BBL_THICK = -1.0 ! [m] default = -1.0
! The maximum bottom boundary layer thickness over which the channel drag is
! exerted, or a negative value for no fixed limit, instead basing the BBL
! thickness on the bottom stress, rotation and stratification. The default is
! proportional to HBBL if USE_JACKSON_PARAM or DRAG_AS_BODY_FORCE is true.
! === module MOM_thickness_diffuse ===
KHTH = 0.0 ! [m2 s-1] default = 0.0
! The background horizontal thickness diffusivity.
KHTH_MIN = 0.0 ! [m2 s-1] default = 0.0
! The minimum horizontal thickness diffusivity.
KHTH_MAX = 0.0 ! [m2 s-1] default = 0.0