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There are [[Variables#NCS|NCS]] cohesive (mud) sediment tracers per nested grid in ROMS. Therefore, [1:[[Variables#NCS|NCS]],1:[[Variables#Ngrids|Ngrids]]] values are expected for these parameters.
There are [[Variables#NCS|NCS]] cohesive (mud) sediment tracers per nested grid in ROMS. Therefore, [1:[[Variables#NCS|NCS]],1:[[Variables#Ngrids|Ngrids]]] values are expected for these parameters.


* Median sediment grain diameter (mm).<div class="box">      [[Variables#sd50|MUD_SD50]] == 0.01d0  0.06d0  0.10d0</div>
* Median sediment grain diameter (mm).<div class="box">      [[Variables#sd50|MUD_SD50]] == 0.01d0  0.005d0</div>


* Sediment concentration (kg/m<sup>3</sup>).<div class="box">      [[Variables#Csed|MUD_CSED]] == 0.0d0  0.0d0  0.0d0</div>
* Sediment concentration (kg/m<sup>3</sup>).<div class="box">      [[Variables#Csed|MUD_CSED]] == 0.0d0  0.0d0</div>


* Sediment grain density (kg/m<sup>3</sup>).<div class="box">      [[Variables#Srho|MUD_SRHO]] == 2650.0d0  2650.0d0  2650.0d0</div>
* Sediment grain density (kg/m<sup>3</sup>).<div class="box">      [[Variables#Srho|MUD_SRHO]] == 2650.0d0  2400.0d0</div>


* Particle settling velocity (mm/s).<div class="box">      [[Variables#Wsed|MUD_WSED]] == 0.1d0  1.0d0  2.0d0</div>
* Particle settling velocity (mm/s).<div class="box">      [[Variables#Wsed|MUD_WSED]] == 0.1d0  0.01d0</div>


* Surface erosion rate (kg/m<sup>2</sup>/s).<div class="box">    [[Variables#Erate|MUD_ERATE]] == 5.0d-5  5.0d-5 5.0d-5</div>
* Surface erosion rate (kg/m<sup>2</sup>/s).<div class="box">    [[Variables#Erate|MUD_ERATE]] == 5.0d-4 5.0d-4</div>


* Critical shear for erosion (N/m<sup>2</sup>).<div class="box">    [[Variables#tau_ce|MUD_TAU_CE]] == 0.05d0 0.05d0 0.05d0</div>
* Critical shear for erosion and deposition (N/m<sup>2</sup>).<div class="box">    [[Variables#tau_ce|MUD_TAU_CE]] == 0.1d0 0.1d0<br />    [[Variables#tau_cd|MUD_TAU_CD]] == 0.1d0 0.1d0</div>


* Critical stress for deposition (N/m<sup>2</sup>), not used.<div class="box">   [[Variables#tau_cd|MUD_TAU_CD]] == 0.01d0  0.01d0 0.01d0</div>
* Porosity (nondimensional): <span class="red">Vwater/(Vwater+Vsed)</span>. Its values range between '''0''' and '''1'''.<div class="box">     [[Variables#poros|MUD_POROS]] == 0.9d0 0.9d0</div>


* Porosity (nondimensional): <span class="red">Vwater/(Vwater+Vsed)</span>. Its values range between '''0''' and '''1'''.<div class="box">     [[Variables#poros|MUD_POROS]] == 0.0d0  0.0d0  0.0d0</div>
* Lateral, constant, harmonic/biharmonic horizontal diffusion of tracer for the nonlinear model and adjoint-based algorithms.<div class="box">     [[Variables#tnu2|MUD_TNU2]] == 0.0d0  0.0d0                    ! m<sup>2</sup>/s<br />     [[Variables#tnu4|MUD_TNU4]] == 0.0d0  0.0d0                    ! m<sup>4</sup>/s<br /><br />   [[Variables#ad_tnu2|ad_MUD_TNU2]] == 0.0d0  0.0d0                    ! m<sup>2</sup>/s<br />  [[Variables#ad_tnu4|ad_MUD_TNU4]] == 0.0d0  0.0d0                   ! m<sup>4</sup>/s</div>


* Lateral, harmonic and biharmonic, constant, diffusion coefficient.<div class="box">     [[Variables#tnu2|MUD_TNU2]] == 0.0d0  0.0d0 0.0d0            ! m<sup>2</sup>/s<br />     [[Variables#tnu4|MUD_TNU4]] == 0.0d0 0.0d0  0.0d0            ! m<sup>4</sup>/s</div>
* Vertical mixing coefficients for tracers in nonlinear model and basic state scale factor in adjoint-based algorithms.<div class="box">   [[Variables#Akt_bak|MUD_AKT_BAK]] == 5.0d-6 5.0d-6                  ! m<sup>2</sup>/s<br />   [[Variables#ad_Akt_fac|MUD_AKT_fac]] == 2*1.0d0                         ! m<sup>2</sup>/s</div>


* Vertical diffusion coefficients.<div class="box">   [[Variables#Akt_bak|MUD_AKT_BAK]] == 5.0d-6  5.0d-6  5.0d-6          ! m<sup>2</sup>/s</div>
* Nudging/relaxation time scales, inverse scales will be computed internally.<div class="box">     [[Variables#Tnudg|MUD_TNUDG]] == 0.0d0 0.0d0                    ! days</div>


* Nudging/relaxation time scales, inverse scales will be computed internally.<div class="box">     [[Variables#Tnudg|MUD_TNUDG]] == 0.0d0 0.0d0 0.0d0               ! days</div>
* Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.<div class="box"> [[Variables#morph_fac|MUD_MORPH_FAC]] == 1.0d0 1.0d0                     ! nondimensional</div>


* Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.<div class="box"> [[Variables#morph_fac|MUD_MORPH_FAC]] == 1.0d0 1.0d0 1.0d0              ! nondimensional</div>
* Logical switch ('''TRUE'''/'''FALSE''') to specify which variables to consider on tracers point Sources/Sinks (like river runoff).<div class="box"> [[Variables#LtracerSrc|MUD_Ltracer]] == F F</div>


* Logical switch ('''TRUE'''/'''FALSE''') to activate writing of cohesive sediment into output NetCDF file(s).<div class="box">  [[Hout|Hout(idmud)]]  == T                              ! suspended concentration<br />  [[Hout|Hout(iMfrac)]] == T                              ! bed layer fraction<br />  [[Hout|Hout(iMmass)]] == T                              ! bed layer mass<br />  [[Hout|Hout(iMUbld)]] == T                              ! bed load at U-points<br />  [[Hout|Hout(iMVbld)]] == T                              ! bed load at V-points</div>
* Logical switch ('''TRUE'''/'''FALSE''') to activate writing of cohesive sediment into output NetCDF file(s).<div class="box">  [[Hout|Hout(idmud)]]  == T                              ! suspended concentration<br />  [[Hout|Hout(iMfrac)]] == T                              ! bed layer fraction<br />  [[Hout|Hout(iMmass)]] == T                              ! bed layer mass<br />  [[Hout|Hout(iMUbld)]] == T                              ! bed load at U-points<br />  [[Hout|Hout(iMVbld)]] == T                              ! bed load at V-points</div>
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* Particle settling velocity (mm/s).<div class="box">    [[Variables#Wsed|SAND_WSED]] == 1.0d0</div>
* Particle settling velocity (mm/s).<div class="box">    [[Variables#Wsed|SAND_WSED]] == 1.0d0</div>


* Surface erosion rate (kg/m<sup>2</sup>/s).<div class="box">    [[Variables#Erate|SAND_ERATE]] == 1.0d-5</div>
* Surface erosion rate (kg/m<sup>2</sup>/s).<div class="box">    [[Variables#Erate|SAND_ERATE]] == 5.0d-4</div>


* Critical shear for erosion and deposition (N/m<sup>2</sup>).<div class="box">  [[Variables#tau_ce|SAND_TAU_CE]] == 0.07d0<br />  [[Variables#tau_cd|SAND_TAU_CD]] == 0.02d0</div>
* Critical shear for erosion and deposition (N/m<sup>2</sup>).<div class="box">  [[Variables#tau_ce|SAND_TAU_CE]] == 0.01d0<br />  [[Variables#tau_cd|SAND_TAU_CD]] == 0.01d0</div>


* Porosity (nondimensional): <span class="red">Vwater/(Vwater+Vsed)</span>. Its values range between '''0''' and '''1'''.<div class="box">    [[Variables#poros|SAND_POROS]] == 0.5d0</div>
* Porosity (nondimensional): <span class="red">Vwater/(Vwater+Vsed)</span>. Its values range between '''0''' and '''1'''.<div class="box">    [[Variables#poros|SAND_POROS]] == 0.5d0</div>


* Lateral, harmonic and biharmonic, constant diffusion coefficient.<div class="box">    [[Variables#tnu2|SAND_TNU2]] == 0.0d0                          ! m<sup>2</sup>/s<br />    [[Variables#tnu4|SAND_TNU4]] == 0.0d0                          ! m<sup>4</sup>/s</div>
* Lateral, constant, harmonic/biharmonic horizontal diffusion of tracer for the nonlinear model and adjoint-based algorithms.<div class="box">    [[Variables#tnu2|SAND_TNU2]] == 0.0d0                          ! m<sup>2</sup>/s<br />    [[Variables#tnu4|SAND_TNU4]] == 0.0d0                          ! m<sup>4</sup>/s<br /><br />  [[Variables#ad_tnu2|ad_SAND_TNU2]] == 0.0d0                          ! m<sup>2</sup>/s<br />  [[Variables#ad_tnu4|ad_SAND_TNU4]] == 0.0d0                          ! m<sup>4</sup>/s</div>


* Vertical diffusion coefficients.<div class="box">  [[Variables#Akt_bak|SAND_AKT_BAK]] == 5.0d-6                          ! m<sup>2</sup>/s</div>
* Vertical mixing coefficients for tracers in nonlinear model and basic state scale factor in adjoint-based algorithms.<div class="box">  [[Variables#Akt_bak|SAND_AKT_BAK]] == 5.0d-6                          ! m<sup>2</sup>/s<br />  [[Variables#ad_Akt_fac|SAND_AKT_fac]] == 1.0d0                          ! m<sup>2</sup>/s</div>


* Nudging/relaxation time scales, inverse scales will be computed internally.<div class="box">    [[Variables#Tnudg|SAND_TNUDG]] == 0.0d0                          ! days</div>
* Nudging/relaxation time scales, inverse scales will be computed internally.<div class="box">    [[Variables#Tnudg|SAND_TNUDG]] == 0.0d0                          ! days</div>


* Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.<div class="box">[[Variables#morph_fac|SAND_MORPH_FAC]] == 1.0d0                          ! nondimensional</div>
* Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.<div class="box">[[Variables#morph_fac|SAND_MORPH_FAC]] == 1.0d0                          ! nondimensional</div>
* Logical switch ('''TRUE'''/'''FALSE''') to specify which variables to consider on tracers point Sources/Sinks (like river runoff).<div class="box"> [[Variables#LtracerSrc|SAND_Ltracer]] == F</div>


* Logical switches ('''TRUE'''/'''FALSE''') to activate writing of non-cohesive sediment fields into output NetCDF file(s).<div class="box">  [[Hout|Hout(isand)]]  == T                              ! suspended concentration<br />  [[Hout|Hout(iSfrac)]] == T                              ! bed layer fraction<br />  [[Hout|Hout(iSmass)]] == T                              ! bed layer mass<br />  [[Hout|Hout(iSUbld)]] == T                              ! bed load at U-points<br />  [[Hout|Hout(iSVbld)]] == T                              ! bed load at V-points</div>
* Logical switches ('''TRUE'''/'''FALSE''') to activate writing of non-cohesive sediment fields into output NetCDF file(s).<div class="box">  [[Hout|Hout(isand)]]  == T                              ! suspended concentration<br />  [[Hout|Hout(iSfrac)]] == T                              ! bed layer fraction<br />  [[Hout|Hout(iSmass)]] == T                              ! bed layer mass<br />  [[Hout|Hout(iSUbld)]] == T                              ! bed load at U-points<br />  [[Hout|Hout(iSVbld)]] == T                              ! bed load at V-points</div>

Revision as of 13:34, 4 December 2009

Sediment Model Input Script - sediment.in

The sediment.in file sets the parameters for sediment output. The name of this file is set by the SPARNAM keyword in the ocean.in file. This standard input ASCII file is organized in several sections as shown below, with links to more detailed explanation where required.


Note Notice: Detailed information about ROMS input script file syntax can be found here.

Note Notice: A default sediment.in input script is provided in the User/External subdirectory. Also there are several sediment input scripts in the ROMS/External subdirectory which are used in the distributed test cases. They are usually named sediment_app.in where app is the lowercase of the test case CPP option.


Sediment model control switches

  • Switch is used to control sediment model computation within nested and/or multiple connected grids, [1:Ngrids] values are expected.
    Lsediment == T

General sediment bed model controls

  • Depositional bed layer thickness (m) criteria to create a new layer. If deposition exceeds this value, then a new layer is created, [1:Ngrids] values are expected.
    NEWLAYER_THICK == 0.01d0

Suspended Cohesive Sediment Parameters

There are NCS cohesive (mud) sediment tracers per nested grid in ROMS. Therefore, [1:NCS,1:Ngrids] values are expected for these parameters.

  • Median sediment grain diameter (mm).
    MUD_SD50 == 0.01d0 0.005d0
  • Sediment concentration (kg/m3).
    MUD_CSED == 0.0d0 0.0d0
  • Sediment grain density (kg/m3).
    MUD_SRHO == 2650.0d0 2400.0d0
  • Particle settling velocity (mm/s).
    MUD_WSED == 0.1d0 0.01d0
  • Surface erosion rate (kg/m2/s).
    MUD_ERATE == 5.0d-4 5.0d-4
  • Critical shear for erosion and deposition (N/m2).
    MUD_TAU_CE == 0.1d0 0.1d0
    MUD_TAU_CD == 0.1d0 0.1d0
  • Porosity (nondimensional): Vwater/(Vwater+Vsed). Its values range between 0 and 1.
    MUD_POROS == 0.9d0 0.9d0
  • Lateral, constant, harmonic/biharmonic horizontal diffusion of tracer for the nonlinear model and adjoint-based algorithms.
    MUD_TNU2 == 0.0d0 0.0d0  ! m2/s
    MUD_TNU4 == 0.0d0 0.0d0  ! m4/s

    ad_MUD_TNU2 == 0.0d0 0.0d0  ! m2/s
    ad_MUD_TNU4 == 0.0d0 0.0d0  ! m4/s
  • Vertical mixing coefficients for tracers in nonlinear model and basic state scale factor in adjoint-based algorithms.
    MUD_AKT_BAK == 5.0d-6 5.0d-6  ! m2/s
    MUD_AKT_fac == 2*1.0d0  ! m2/s
  • Nudging/relaxation time scales, inverse scales will be computed internally.
    MUD_TNUDG == 0.0d0 0.0d0  ! days
  • Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.
    MUD_MORPH_FAC == 1.0d0 1.0d0  ! nondimensional
  • Logical switch (TRUE/FALSE) to specify which variables to consider on tracers point Sources/Sinks (like river runoff).
    MUD_Ltracer == F F
  • Logical switch (TRUE/FALSE) to activate writing of cohesive sediment into output NetCDF file(s).
    Hout(idmud) == T  ! suspended concentration
    Hout(iMfrac) == T  ! bed layer fraction
    Hout(iMmass) == T  ! bed layer mass
    Hout(iMUbld) == T  ! bed load at U-points
    Hout(iMVbld) == T  ! bed load at V-points

Non-cohesive Sediment Parameters

There are NNS non-cohesive (sand) sediment tracers per nested grid in ROMS. Therefore, [1:NNS,1:Ngrids] values are expected for these parameters.

  • Median sediment grain diameter (mm).
    SAND_SD50 == 1.0d0
  • Sediment concentration (kg/m3).
    SAND_CSED == 0.0d0
  • Sediment grain density (kg/m3).
    SAND_SRHO == 2650.0d0
  • Particle settling velocity (mm/s).
    SAND_WSED == 1.0d0
  • Surface erosion rate (kg/m2/s).
    SAND_ERATE == 5.0d-4
  • Porosity (nondimensional): Vwater/(Vwater+Vsed). Its values range between 0 and 1.
    SAND_POROS == 0.5d0
  • Lateral, constant, harmonic/biharmonic horizontal diffusion of tracer for the nonlinear model and adjoint-based algorithms.
    SAND_TNU2 == 0.0d0  ! m2/s
    SAND_TNU4 == 0.0d0  ! m4/s

    ad_SAND_TNU2 == 0.0d0  ! m2/s
    ad_SAND_TNU4 == 0.0d0  ! m4/s
  • Vertical mixing coefficients for tracers in nonlinear model and basic state scale factor in adjoint-based algorithms.
    SAND_AKT_BAK == 5.0d-6  ! m2/s
    SAND_AKT_fac == 1.0d0  ! m2/s
  • Nudging/relaxation time scales, inverse scales will be computed internally.
    SAND_TNUDG == 0.0d0  ! days
  • Morphological time scale factor (greater than or equal to 1.0). A value of 1.0 has no scale effect.
    SAND_MORPH_FAC == 1.0d0  ! nondimensional
  • Logical switch (TRUE/FALSE) to specify which variables to consider on tracers point Sources/Sinks (like river runoff).
    SAND_Ltracer == F
  • Logical switches (TRUE/FALSE) to activate writing of non-cohesive sediment fields into output NetCDF file(s).
    Hout(isand) == T  ! suspended concentration
    Hout(iSfrac) == T  ! bed layer fraction
    Hout(iSmass) == T  ! bed layer mass
    Hout(iSUbld) == T  ! bed load at U-points
    Hout(iSVbld) == T  ! bed load at V-points

Bed layer and bottom sediment parameters

  • Logical switches (TRUE/FALSE) to activate writing of bed layer and bottom sediment fields into output NetCDF file(s), [1:Ngrids] values are expected.
    Hout(ithck) == T  ! sediment layer thickness
    Hout(iaged) == T  ! sediment layer age
    Hout(iporo) == T  ! sediment layer porosity
    Hout(idiff) == F  ! biodiffusivity
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