Changeset 13343


Ignore:
Timestamp:
2020-07-27T11:54:24+02:00 (2 weeks ago)
Author:
clem
Message:

change namelist parameters (ice and ocean) for best results

Location:
NEMO/releases/r4.0/r4.0-HEAD/cfgs/SHARED
Files:
2 edited

Legend:

Unmodified
Added
Removed
  • NEMO/releases/r4.0/r4.0-HEAD/cfgs/SHARED/namelist_ice_ref

    r13284 r13343  
    9595      rn_creepl     =   2.0e-9        !     creep limit [1/s] 
    9696      rn_ecc        =   2.0           !     eccentricity of the elliptical yield curve           
    97       nn_nevp       = 120             !     number of EVP subcycles                              
     97      nn_nevp       = 100             !     number of EVP subcycles                              
    9898      rn_relast     =   0.333         !     ratio of elastic timescale to ice time step: Telast = dt_ice * rn_relast  
    99                                       !        advised value: 1/3 (rn_nevp=120) or 1/9 (rn_nevp=300) 
     99                                      !        advised value: 1/3 (nn_nevp=100) or 1/9 (nn_nevp=300) 
    100100   ln_rhg_chkcvg    = .false.         !  check convergence of rheology (outputs: file ice_cvg.nc & variable uice_cvg) 
    101101/ 
     
    111111!------------------------------------------------------------------------------ 
    112112   rn_cio           =   5.0e-03       !  ice-ocean drag coefficient (-) 
    113    nn_snwfra        =   0             !  calculate the fraction of ice covered by snow (for zdf and albedo) 
     113   nn_snwfra        =   2             !  calculate the fraction of ice covered by snow (for zdf and albedo) 
    114114                                      !     = 0  fraction = 1 (if snow) or 0 (if no snow) 
    115115                                      !     = 1  fraction = 1-exp(-0.2*rhos*hsnw) [MetO formulation] 
     
    124124   ln_cndflx        = .false.         !  Use conduction flux as surface boundary conditions (i.e. for Jules coupling) 
    125125      ln_cndemulate = .false.         !     emulate conduction flux (if not provided in the inputs) 
    126    nn_qtrice        =              !  Solar flux transmitted thru the surface scattering layer: 
     126   nn_qtrice        =   1             !  Solar flux transmitted thru the surface scattering layer: 
    127127                                      !     = 0  Grenfell and Maykut 1977 (depends on cloudiness and is 0 when there is snow)  
    128128                                      !     = 1  Lebrun 2019 (equals 0.3 anytime with different melting/dry snw conductivities) 
     
    190190&namthd_pnd     !   Melt ponds 
    191191!------------------------------------------------------------------------------ 
    192    ln_pnd            = .false.        !  activate melt ponds or not 
    193       ln_pnd_LEV     = .false.        !  level ice melt ponds (from Flocco et al 2007,2010 & Holland et al 2012) 
     192   ln_pnd            = .true.         !  activate melt ponds or not 
     193      ln_pnd_LEV     = .true.         !  level ice melt ponds (from Flocco et al 2007,2010 & Holland et al 2012) 
    194194         rn_apnd_min =   0.15         !     minimum ice fraction that contributes to melt pond. range: 0.0 -- 0.15 ?? 
    195195         rn_apnd_max =   0.85         !     maximum ice fraction that contributes to melt pond. range: 0.7 -- 0.85 ?? 
  • NEMO/releases/r4.0/r4.0-HEAD/cfgs/SHARED/namelist_ref

    r13284 r13343  
    10541054   rn_bshear   =   1.e-20  ! background shear (>0) currently a numerical threshold (do not change it) 
    10551055   nn_pdl      =   1       !  Prandtl number function of richarson number (=1, avt=pdl(Ri)*avm) or not (=0, avt=avm) 
    1056    nn_mxl      =   2       !  mixing length: = 0 bounded by the distance to surface and bottom 
     1056   nn_mxl      =   3       !  mixing length: = 0 bounded by the distance to surface and bottom 
    10571057   !                       !                 = 1 bounded by the local vertical scale factor 
    10581058   !                       !                 = 2 first vertical derivative of mixing length bounded by 1 
    10591059   !                       !                 = 3 as =2 with distinct dissipative an mixing length scale 
    10601060   ln_mxl0     = .true.    !  surface mixing length scale = F(wind stress) (T) or not (F) 
    1061       nn_mxlice    = 0        ! type of scaling under sea-ice 
     1061      nn_mxlice    = 2        ! type of scaling under sea-ice 
    10621062                              !    = 0 no scaling under sea-ice 
    10631063                              !    = 1 scaling with constant sea-ice thickness 
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