3D Section

This section configures the 3D model settings in T-UGOm. It includes parameters for vertical discretization, time integration, tracer modes, and turbulence closure for 3D simulations.

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Parameter	Description
3D_computation	Flag to enable/disable 3D computations (TRUE, FALSE).
3D_time_step	Time step for 3D simulations (default: $2D_time_step, in seconds).
Momentum_integration	Time integration scheme for momentum (FORWARD, LEAPFROG, EULER-BF).
Tracers_integration	Time integration scheme for tracers (FORWARD, LEAPFROG, EULER-BF).
3D_mode	Mode for 3D computations (BAROCLINIC, BAROTROPIC).
tracers_mode	Mode for tracers (STATIC, DIAGNOSTIC, PROGNOSTIC).
pressure_mode	Pressure mode (HYDROSTATIC, NON-HYDROSTATIC).
w_derivation	Method for deriving vertical velocity (DIRECT, WE-CONSISTENT).
w_discretisation	Vertical velocity discretization: Hori x Vert (LGP0xLGP1, LGP1xLGP1).
p_horizontal_discretisation	Horizontal discretization for pressure (LGP0, LGP1).
p_vertical_discretisation	Vertical discretization for pressure (LGP0, LGP1).
tracers_discretisation	Discretization for tracers (LGP0, LGP1, QLP1).
tracers_vertical_resolution	Vertical resolution for tracers (default: 1, in layers).
tracers_advection_centering	Advection centering for tracers (default: 0.5, dimensionless).
tracer_initialisation	Initialization method for tracers (HOMOGENEOUS, PROFILE, MODEL).
initialisation_files_directory	Directory for initialization files.
temperature_initialisation_file	File for temperature initialization.
salinity_initialisation_file	File for salinity initialization.
density_initialisation_file	File for density initialization.
tracer_profile_file	File for tracer profile initialization.
max_number_layers	Maximum number of vertical layers (default: 20).
number_of_upper_horizontal_layers	Number of upper horizontal layers (default: 0).
limit_of_upper_horizontal_layers	Depth limit for upper horizontal layers (default: -50 m).
level_distribution	Distribution of vertical levels (COSINUS, BOTTOM-COSINUS, SURFACE-COSINUS, UNIFORM, COMODO, FILE).
level_optimisation	Optimization method for vertical levels (NONE, DENSITY-LAPLACIAN, MODAL, ISOPYCNAL).
level_displacement	Displacement mode for vertical levels (SURFACE-ONLY, ALL, RIGID-LID).
turbulence_closure	Turbulence closure model (CONSTANT, YAMADA, GALPERIN, GASPAR, TKE, KOMEGA, HOMOGENEOUS).
lateral_diffusion_coefficient	Lateral diffusion coefficient (default: 0.0 m²/s).
vertical_diffusion_coefficient	Vertical diffusion coefficient (default: 1.e-04 m²/s).
tracer_vertical_diffusion_coefficient	Vertical diffusion coefficient for tracers (default: 1.e-04 m²/s).

Deprecated options

Parameter	Description	Coment
v_discretisation	Horizontal velocity discretization (LGP0, LGP1, NCP1).	Now replace by 2D discretization but only these 3 options are available sur 3D runs.
v_vertical_discretisation	Vertical velocity discretization (LGP0).	Now forced to be LGP0.
tracers_vertical_discretisation	Vertical discretization for tracers (LGP0, LGP1).	Now controled by tracers_discretisation: if LGP0 or LGP1, then the vertical discretisation will be LGP0; if QLP1, then the vertical discretisation will be LGP1