eORCA025.L121-OPM017¶
Summary¶
Compare to eORCA025.L121-OPM016, we switched off the AABW restoring, decreased the diffusion as well as the GM coefficient (get back to UKMO value)
Namelist¶
Only the change compare to the reference (eORCA025.L121-OPM016) a mentioned here:
namelist_oce¶
namtsd¶
tradmp input file changed to be equal to initial condition as in OPM006 because AABW restoring turned off.
!-----------------------------------------------------------------------
&namtsd_drk ! Temperature & Salinity Data (init/dmp) (default: OFF)
! ! if key_drakkar, **only** namtsd_drk is read
!-----------------------------------------------------------------------
ln_tsd_init = .true. ! Initialisation of ocean T & S with T &S input data (T) or not (F)
ln_tsd_dmp = .false. ! damping of ocean T & S toward T &S input data (T) or not (F)
cn_dir = './' ! root directory for the location of the temperature and salinity file
!___________!_____________________________________!___________________!___________!_____________!________!___________!_____________!__________!_______________!
! ! file name ! frequency (hours) ! variable ! time interp.! clim ! 'yearly'/ ! weights ! rotation ! land/sea mask !
! ! ! (if <0 months) ! name ! (logical) ! (T/F) ! 'monthly' ! filename ! pairing ! filename !
! data used for initial condition (istate)
sn_tem_ini = 'eORCA025.L121_WOA2018_c3.0_d1.0_v19812010.5.1', -1., 'votemper', .true. , .true. , 'yearly' , '' , ' ' , ' '
sn_sal_ini = 'eORCA025.L121_WOA2018_c3.0_d1.0_v19812010.5.1', -1., 'vosaline', .true. , .true. , 'yearly' , '' , ' ' , ' '
! data used for damping ( tradmp)
sn_tem_dmp = 'eORCA025.L121_WOA2018_c3.0_d1.0_v19812010.5.1', -1., 'votemper', .true. , .true., 'yearly' , '' , ' ' , ' '
sn_sal_dmp = 'eORCA025.L121_WOA2018_c3.0_d1.0_v19812010.5.1', -1., 'vosaline', .true. , .true., 'yearly' , '' , ' ' , ' '
!
/
namtra_ldf¶
We get back to UKMO values (150m2/s)
!-----------------------------------------------------------------------
&namtra_ldf ! lateral diffusion scheme for tracers (default: NO selection)
!-----------------------------------------------------------------------
! ! Operator type:
ln_traldf_OFF = .false. ! No explicit diffusion
ln_traldf_lap = .true. ! laplacian operator
ln_traldf_blp = .false. ! bilaplacian operator
!
! ! Direction of action:
ln_traldf_lev = .false. ! iso-level
ln_traldf_hor = .false. ! horizontal (geopotential)
ln_traldf_iso = .true. ! iso-neutral (standard operator)
ln_traldf_triad = .false. ! iso-neutral (triad operator)
!
! ! iso-neutral options:
ln_traldf_msc = .false. ! Method of Stabilizing Correction (both operators)
rn_slpmax = 0.01 ! slope limit (both operators)
ln_triad_iso = .false. ! pure horizontal mixing in ML (triad only)
rn_sw_triad = 1 ! =1 switching triad ; =0 all 4 triads used (triad only)
ln_botmix_triad = .false. ! lateral mixing on bottom (triad only)
!
! ! Coefficients:
nn_aht_ijk_t = 20 ! space/time variation of eddy coefficient:
! ! =-20 (=-30) read in eddy_diffusivity_2D.nc (..._3D.nc) file
! ! = 0 constant
! ! = 10 F(k) =ldf_c1d
! ! = 20 F(i,j) =ldf_c2d
! ! = 21 F(i,j,t) =Treguier et al. JPO 1997 formulation
! ! = 30 F(i,j,k) =ldf_c2d * ldf_c1d
! ! = 31 F(i,j,k,t)=F(local velocity and grid-spacing)
! ! time invariant coefficients: aht0 = 1/2 Ud*Ld (lap case)
! ! or = 1/12 Ud*Ld^3 (blp case)
rn_Ud = 0.011 ! lateral diffusive velocity [m/s] (nn_aht_ijk_t= 0, 10, 20, 30)
rn_Ld = 200.e+3 ! lateral diffusive length [m] (nn_aht_ijk_t= 0, 10)
/
namtra_eiv¶
Based on UKMO test and Julie D. discussion we switch one GM (150m2/s) (300m2/s2 in OPM016)
!-----------------------------------------------------------------------
&namtra_eiv ! eddy induced velocity param. (default: OFF)
!-----------------------------------------------------------------------
ln_ldfeiv = .true. ! use eddy induced velocity parameterization
!
! ! Coefficients:
nn_aei_ijk_t = 21 ! space/time variation of eddy coefficient:
! ! =-20 (=-30) read in eddy_induced_velocity_2D.nc (..._3D.nc) file
! ! = 0 constant
! ! = 10 F(k) =ldf_c1d
! ! = 20 F(i,j) =ldf_c2d
! ! = 21 F(i,j,t) =Treguier et al. JPO 1997 formulation
! ! = 30 F(i,j,k) =ldf_c2d * ldf_c1d
! ! time invariant coefficients: aei0 = 1/2 Ue*Le
rn_Ue = 0.03 ! lateral diffusive velocity [m/s] (nn_aei_ijk_t= 0, 10, 20, 30)
rn_Le = 10.e+3 ! lateral diffusive length [m] (nn_aei_ijk_t= 0, 10)
!
ln_ldfeiv_dia =.false. ! diagnose eiv stream function and velocities
nn_ldfeiv_shape = 2 ! shape of bounding coefficient (nn_aei_ijk_t= 21 only)
/
namtra_dmp_drk¶
we switch off AABW restoring.
!-----------------------------------------------------------------------
&namtra_dmp_drk ! tracer: T & S newtonian damping (default: OFF)
!-----------------------------------------------------------------------
nn_hdmp = -2 ! -2 = Drakkar customisation ( use dtacof in tradmp.F90 )
! any other value : Nemo standard code
nn_file = 1 ! create a damping.coeff NetCDF file (=1) or not (=0)
! The output file can then be used as input resto file (cn_resto)
ln_dmpmask = .false. ! Read dmp_mask.nc file when T (between 0 and 1 )
rn_timsk = 730. ! Time scale used for dmp_mask
cn_dir = './' ! directtory wher to find damping mask
!___________!____________!___________________!___________!_____________!________!___________!___________!__________!_______________!
! ! file name ! frequency (hours) ! variable ! time interp.! clim ! 'yearly'/ ! weights e ! rotation ! land/sea mask !
! ! ! (if <0 months) ! name ! (logical) ! (T/F) ! 'monthly' ! filename ! pairing ! filename !
sn_dmp = 'eORCA025.L121_dmpmask_b0.2_c0.3_d1.0_v0.0' , -12. , 'wdmp' , .false. , .true. , 'yearly' , '' , '' , ''
/
Input files¶
Only the file changed between the reference (bug_input_eO025-OPM016) and this simulation are described.