source: NEMO/branches/2020/r4.0-HEAD_r12713_clem_dan_fixcpl/doc/namelists/namzdf_tke

Last change on this file was 13279, checked in by clem, 4 months ago

merge with r4.0-HEAD at r13278

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1!-----------------------------------------------------------------------
2&namzdf_tke    !   turbulent eddy kinetic dependent vertical diffusion  (ln_zdftke =T)
3!-----------------------------------------------------------------------
4   rn_ediff    =   0.1     !  coef. for vertical eddy coef. (avt=rn_ediff*mxl*sqrt(e) )
5   rn_ediss    =   0.7     !  coef. of the Kolmogoroff dissipation
6   rn_ebb      =  67.83    !  coef. of the surface input of tke (=67.83 suggested when ln_mxl0=T)
7   rn_emin     =   1.e-6   !  minimum value of tke [m2/s2]
8   rn_emin0    =   1.e-4   !  surface minimum value of tke [m2/s2]
9   rn_bshear   =   1.e-20  ! background shear (>0) currently a numerical threshold (do not change it)
10   nn_pdl      =   1       !  Prandtl number function of richarson number (=1, avt=pdl(Ri)*avm) or not (=0, avt=avm)
11   nn_mxl      =   2       !  mixing length: = 0 bounded by the distance to surface and bottom
12   !                       !                 = 1 bounded by the local vertical scale factor
13   !                       !                 = 2 first vertical derivative of mixing length bounded by 1
14   !                       !                 = 3 as =2 with distinct dissipative an mixing length scale
15   ln_mxl0     = .true.    !  surface mixing length scale = F(wind stress) (T) or not (F)
16   rn_mxl0     =   0.04    !  surface  buoyancy lenght scale minimum value
17   ln_lc       = .true.    !  Langmuir cell parameterisation (Axell 2002)
18      rn_lc       =   0.15    !  coef. associated to Langmuir cells
19   nn_etau     =   1       !  penetration of tke below the mixed layer (ML) due to NIWs
20                              !        = 0 none ; = 1 add a tke source below the ML
21                              !        = 2 add a tke source just at the base of the ML
22                              !        = 3 as = 1 applied on HF part of the stress           (ln_cpl=T)
23      rn_efr      =   0.05    !  fraction of surface tke value which penetrates below the ML (nn_etau=1 or 2)
24      nn_htau     =   1       !  type of exponential decrease of tke penetration below the ML
25                              !        = 0  constant 10 m length scale
26                              !        = 1  0.5m at the equator to 30m poleward of 40 degrees
27   nn_eice     =   1       !  attenutaion of langmuir & surface wave breaking under ice
28   !                       !           = 0 no impact of ice cover on langmuir & surface wave breaking
29   !                       !           = 1 weigthed by 1-TANH(10*fr_i)
30   !                       !           = 2 weighted by 1-fr_i
31   !                       !           = 3 weighted by 1-MIN(1,4*fr_i)
32/
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