namelist_ice_cfg namelist_ice_ref _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ | 0 namelist_ice_cfg - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0!!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 0!! NEMO/LIM-3 : Ice configuration namelist. Overwrites SHARED/namelist_ice_lim3_ref 0!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 0 0!----------------------------------------------------------------------- 0&namicerun ! Share parameters for dynamics/advection/thermo 0!----------------------------------------------------------------------- 0 cn_icerst_in = "restart_ice_in" ! suffix of ice restart name (input) 0 rn_amax_n = 0.997 ! maximum tolerated ice concentration NH 0 rn_amax_s = 0.950 ! maximum tolerated ice concentration SH 0 ln_limdiahsb = .false. ! check the heat and salt budgets (T) or not (F) 0 ln_limdiaout = .true. ! output the heat and salt budgets (T) or not (F) 0/ 0!----------------------------------------------------------------------- 0&namiceini ! ice initialisation 0!----------------------------------------------------------------------- 0/ 0!----------------------------------------------------------------------- 0&namicedyn ! ice dynamic 0!----------------------------------------------------------------------- 0/ 0!------------------------------------------------------------------------------ 0&namicehdf ! Ice horizontal diffusion 0!------------------------------------------------------------------------------ 0/ 0!----------------------------------------------------------------------- 0&namicethd ! ice thermodynamic 0!----------------------------------------------------------------------- 0 rn_cdsn = 0.50 ! thermal conductivity of the snow (0.31 W/m/K, Maykut and Untersteiner, 1971) 0 ! Obs: 0.1-0.5 (Lecomte et al, JAMES 2013) 0/ 0!----------------------------------------------------------------------- 0&namicesal ! ice salinity 0!----------------------------------------------------------------------- 0/ 0!----------------------------------------------------------------------- 0&namiceitdme ! parameters for mechanical redistribution of ice 0!----------------------------------------------------------------------- 0 rn_astar = 0.03 ! exponential measure of ridging ice fraction (nn_partfun = 1) 0 rn_hstar = 25.0 ! determines the maximum thickness of ridged ice (m) (Hibler, 1980) 0/ 0!----------------------------------------------------------------------- 0&namicedia ! ice diagnostics 0!----------------------------------------------------------------------- 0/ 0!------------------------------------------------------------------------------ 0&namiceitd ! Ice discretization 0!------------------------------------------------------------------------------ 0/ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ | 1 namelist_ice_ref - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1!!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1!! LIM3 namelist : 1!! 1 - Generic parameters (namicerun) 1!! 2 - Ice initialization (namiceini) 1!! 3 - Ice discretization (namiceitd) 1!! 4 - Ice dynamics and transport (namicedyn) 1!! 5 - Ice thermodynamics (namicethd) 1!! 6 - Ice salinity (namicesal) 1!! 7 - Ice mechanical redistribution (namiceitdme) 1!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1! 1!------------------------------------------------------------------------------ 1&namicerun ! Generic parameters 1!------------------------------------------------------------------------------ 1 jpl = 5 ! number of ice categories 1 nlay_i = 2 ! number of ice layers 1 nlay_s = 1 ! number of snow layers (only 1 is working) 1 cn_icerst_in = "restart_ice" ! suffix of ice restart name (input) 1 cn_icerst_indir = "." ! directory from which to read input ice restarts 1 cn_icerst_out = "restart_ice" ! suffix of ice restart name (output) 1 cn_icerst_outdir = "." ! directory in which to write output ice restarts 1 ln_limdyn = .true. ! ice dynamics (T) or thermodynamics only (F) 1 rn_amax_n = 0.999 ! maximum tolerated ice concentration NH 1 rn_amax_s = 0.999 ! maximum tolerated ice concentration SH 1 ln_limdiahsb = .false. ! check the heat and salt budgets (T) or not (F) 1 ln_limdiaout = .true. ! output the heat and salt budgets (T) or not (F) 1 ln_icectl = .false. ! ice points output for debug (T or F) 1 iiceprt = 10 ! i-index for debug 1 jiceprt = 10 ! j-index for debug 1/ 1!------------------------------------------------------------------------------ 1&namiceini ! Ice initialization 1!------------------------------------------------------------------------------ 1 ln_iceini = .true. ! activate ice initialization (T) or not (F) 1 rn_thres_sst = 2.0 ! maximum water temperature with initial ice (degC) 1 rn_hts_ini_n = 0.3 ! initial real snow thickness (m), North 1 rn_hts_ini_s = 0.3 ! " " South 1 rn_hti_ini_n = 3.0 ! initial real ice thickness (m), North 1 rn_hti_ini_s = 1.0 ! " " South 1 rn_ati_ini_n = 0.9 ! initial ice concentration (-), North 1 rn_ati_ini_s = 0.9 ! " " South 1 rn_smi_ini_n = 6.3 ! initial ice salinity (g/kg), North 1 rn_smi_ini_s = 6.3 ! " " South 1 rn_tmi_ini_n = 270. ! initial ice/snw temperature (K), North 1 rn_tmi_ini_s = 270. ! " " South 1/ 1!------------------------------------------------------------------------------ 1&namiceitd ! Ice discretization 1!------------------------------------------------------------------------------ 1 nn_catbnd = 2 ! computation of ice category boundaries based on 1 ! 1: tanh function 1 ! 2: h^(-alpha), function of rn_himean 1 rn_himean = 2.0 ! expected domain-average ice thickness (m), nn_catbnd = 2 only 1/ 1!------------------------------------------------------------------------------ 1&namicedyn ! Ice dynamics and transport 1!------------------------------------------------------------------------------ 1 nn_icestr = 0 ! ice strength parameteriztaion 1 ! 0: Hibler_79 P = pstar**exp(-c_rhg*A) 1 ! 1: Rothrock_75 P = Cf*coeff*integral(wr.h^2) 1 ln_icestr_bvf = .false. ! ice strength function brine volume (T) or not (F) 1 rn_pe_rdg = 17.0 ! ridging work divided by pot. energy change in ridging, if nn_icestr = 1 1 rn_pstar = 2.0e+04 ! ice strength thickness parameter (N/m2), nn_icestr = 0 1 rn_crhg = 20.0 ! ice strength conc. parameter (-), nn_icestr = 0 1 rn_cio = 5.0e-03 ! ice-ocean drag coefficient (-) 1 rn_creepl = 1.0e-12 ! creep limit (s-1) 1 rn_ecc = 2.0 ! eccentricity of the elliptical yield curve 1 nn_nevp = 120 ! number of EVP subcycles 1 rn_relast = 0.333 ! ratio of elastic timescale to ice time step: Telast = dt_ice * rn_relast 1 ! advised value: 1/3 (rn_nevp=120) or 1/9 (rn_nevp=300) 1/ 1!------------------------------------------------------------------------------ 1&namicehdf ! Ice horizontal diffusion 1!------------------------------------------------------------------------------ 1 nn_ahi0 = -1 ! horizontal diffusivity computation 1 ! -1: no diffusion (bypass limhdf) 1 ! 0: use rn_ahi0_ref 1 ! 1: use rn_ahi0_ref x mean grid cell length / ( 2deg mean grid cell length ) 1 ! 2: use rn_ahi0_ref x grid cell length / ( 2deg mean grid cell length ) 1 rn_ahi0_ref = 350.0 ! horizontal sea ice diffusivity (m2/s) 1 ! if nn_ahi0 > 0, rn_ahi0_ref is the reference value at a nominal 2 deg resolution 1 nn_convfrq = 5 ! convergence check frequency of the Crant-Nicholson scheme (perf. optimization) 1/ 1!------------------------------------------------------------------------------ 1&namicethd ! Ice thermodynamics 1!------------------------------------------------------------------------------ 1 rn_hnewice = 0.1 ! thickness for new ice formation in open water (m) 1 ln_frazil = .false. ! use frazil ice collection thickness as a function of wind (T) or not (F) 1 rn_maxfrazb = 1.0 ! maximum fraction of frazil ice collecting at the ice base 1 rn_vfrazb = 0.417 ! thresold drift speed for frazil ice collecting at the ice bottom (m/s) 1 rn_Cfrazb = 5.0 ! squeezing coefficient for frazil ice collecting at the ice bottom 1 rn_himin = 0.10 ! minimum ice thickness (m) used in remapping, must be smaller than rn_hnewice 1 rn_betas = 0.66 ! exponent in lead-ice repratition of snow precipitation 1 ! betas = 1 -> equipartition, betas < 1 -> more on leads 1 rn_kappa_i = 1.0 ! radiation attenuation coefficient in sea ice (m-1) 1 nn_conv_dif = 50 ! maximal number of iterations for heat diffusion computation 1 rn_terr_dif = 0.0001 ! maximum temperature after heat diffusion (degC) 1 nn_ice_thcon= 1 ! sea ice thermal conductivity 1 ! 0: k = k0 + beta.S/T (Untersteiner, 1964) 1 ! 1: k = k0 + beta1.S/T - beta2.T (Pringle et al., 2007) 1 rn_cdsn = 0.31 ! thermal conductivity of the snow (0.31 W/m/K, Maykut and Untersteiner, 1971) 1 ! Obs: 0.1-0.5 (Lecomte et al, JAMES 2013) 1 nn_monocat = 0 ! virtual ITD mono-category parameterizations (1, jpl = 1 only) or not (0) 1 ! 2: simple piling instead of ridging --- temporary option 1 ! 3: activate G(he) only --- temporary option 1 ! 4: activate lateral melting only --- temporary option 1 ln_it_qnsice = .true. ! iterate the surface non-solar flux with surface temperature (T) or not (F) 1/ 1!------------------------------------------------------------------------------ 1&namicesal ! Ice salinity 1!------------------------------------------------------------------------------ 1 nn_icesal = 2 ! ice salinity option 1 ! 1: constant ice salinity (S=rn_icesal) 1 ! 2: varying salinity parameterization S(z,t) 1 ! 3: prescribed salinity profile S(z), Schwarzacher, 1959 1 rn_icesal = 4. ! ice salinity (g/kg, nn_icesal = 1 only) 1 rn_sal_gd = 5. ! restoring ice salinity, gravity drainage (g/kg) 1 rn_time_gd = 1.73e+6 ! restoring time scale, gravity drainage (s) 1 rn_sal_fl = 2. ! restoring ice salinity, flushing (g/kg) 1 rn_time_fl = 8.64e+5 ! restoring time scale, flushing (s) 1 rn_simax = 20. ! maximum tolerated ice salinity (g/kg) 1 rn_simin = 0.1 ! minimum tolerated ice salinity (g/kg) 1/ 1!------------------------------------------------------------------------------ 1&namiceitdme ! Ice mechanical redistribution (ridging and rafting) 1!------------------------------------------------------------------------------ 1 rn_Cs = 0.5 ! fraction of shearing energy contributing to ridging 1 rn_fsnowrdg = 0.5 ! snow volume fraction that survives in ridging 1 rn_fsnowrft = 0.5 ! snow volume fraction that survives in rafting 1 nn_partfun = 1 ! type of ridging participation function 1 ! 0: linear (Thorndike et al, 1975) 1 ! 1: exponential (Lipscomb, 2007 1 rn_gstar = 0.15 ! fractional area of thin ice being ridged (nn_partfun = 0) 1 rn_astar = 0.05 ! exponential measure of ridging ice fraction (nn_partfun = 1) 1 rn_hstar = 100.0 ! determines the maximum thickness of ridged ice (m) (Hibler, 1980) 1 ln_rafting = .true. ! rafting activated (T) or not (F) 1 rn_hraft = 0.75 ! threshold thickness for rafting (m) 1 rn_craft = 5.0 ! squeezing coefficient used in the rafting function 1 rn_por_rdg = 0.3 ! porosity of newly ridged ice (Lepparanta et al., 1995) 1/