!!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> !! SI3 configuration namelist: Overwrites SHARED/namelist_ice_ref !! 1 - Generic parameters (nampar) !! 2 - Ice thickness discretization (namitd) !! 3 - Ice dynamics (namdyn) !! 4 - Ice ridging/rafting (namdyn_rdgrft) !! 5 - Ice rheology (namdyn_rhg) !! 6 - Ice advection (namdyn_adv) !! 7 - Ice surface boundary conditions (namsbc) !! 8 - Ice thermodynamics (namthd) !! 9 - Ice heat diffusion (namthd_zdf) !! 10 - Ice lateral melting (namthd_da) !! 11 - Ice growth in open water (namthd_do) !! 12 - Ice salinity (namthd_sal) !! 13 - Ice melt ponds (namthd_pnd) !! 14 - Ice initialization (namini) !! 15 - Ice/snow albedos (namalb) !! 16 - Ice diagnostics (namdia) !!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ! !------------------------------------------------------------------------------ &nampar ! Generic parameters !------------------------------------------------------------------------------ cn_icerst_in = "restart_ice_in" ! suffix of ice restart name (input) rn_amax_n = 0.997 ! maximum tolerated ice concentration NH rn_amax_s = 0.950 ! maximum tolerated ice concentration SH / !------------------------------------------------------------------------------ &namitd ! Ice discretization !------------------------------------------------------------------------------ / !------------------------------------------------------------------------------ &namdyn ! Ice dynamics !------------------------------------------------------------------------------ / !------------------------------------------------------------------------------ &namdyn_rdgrft ! Ice ridging/rafting !------------------------------------------------------------------------------ / !------------------------------------------------------------------------------ &namdyn_rhg ! Ice rheology !------------------------------------------------------------------------------ ln_rhg_EVP = .true. ! EVP rheology ln_aEVP = .false. ! adaptive rheology (Kimmritz et al. 2016 & 2017) rn_creepl = 2.0e-9 ! creep limit [1/s] rn_ecc = 2.0 ! eccentricity of the elliptical yield curve nn_nevp = 120 ! number of EVP subcycles rn_relast = 0.333 ! ratio of elastic timescale to ice time step: Telast = dt_ice * rn_relast ! advised value: 1/3 (rn_nevp=120) or 1/9 (rn_nevp=300) ln_rhg_chkcvg = .false. ! check convergence of rheology (outputs: file ice_cvg.nc & variable uice_cvg) / !------------------------------------------------------------------------------ &namdyn_adv ! Ice advection !------------------------------------------------------------------------------ / !------------------------------------------------------------------------------ &namsbc ! Ice surface boundary conditions !------------------------------------------------------------------------------ rn_cio = 5.0e-03 ! ice-ocean drag coefficient (-) nn_snwfra = 2 ! calculate the fraction of ice covered by snow (for zdf and albedo) ! = 2 fraction = hsnw / (hsnw+0.02) [CICE formulation] rn_snwblow = 0.66 ! mesure of snow blowing into the leads ! = 1 => no snow blowing, < 1 => some snow blowing nn_flxdist = 2 ! Redistribute heat flux over ice categories ! = 2 Redistribute a single flux over categories ln_cndflx = .false. ! Use conduction flux as surface boundary conditions (i.e. for Jules coupling) ln_cndemulate = .false. ! emulate conduction flux (if not provided in the inputs) nn_qtrice = 1 ! Solar flux transmitted thru the surface scattering layer: ! = 1 Lebrun 2019 (equals 0.3 anytime with different melting/dry snw conductivities) / !------------------------------------------------------------------------------ &namthd ! Ice thermodynamics !------------------------------------------------------------------------------ ln_icedH = .true. ! activate ice thickness change from growing/melting (T) or not (F) ln_icedA = .true. ! activate lateral melting param. (T) or not (F) ln_icedO = .true. ! activate ice growth in open-water (T) or not (F) ln_icedS = .true. ! activate brine drainage (T) or not (F) ! ln_leadhfx = .false. ! heat in the leads is used to melt sea-ice before warming the ocean / !------------------------------------------------------------------------------ &namthd_zdf ! Ice heat diffusion !------------------------------------------------------------------------------ rn_cnd_s = 0.50 ! thermal conductivity of the snow (0.31 W/m/K, Maykut and Untersteiner, 1971) ! Obs: 0.1-0.5 (Lecomte et al, JAMES 2013) / !------------------------------------------------------------------------------ &namthd_da ! Ice lateral melting !------------------------------------------------------------------------------ / !------------------------------------------------------------------------------ &namthd_do ! Ice growth in open water !------------------------------------------------------------------------------ / !------------------------------------------------------------------------------ &namthd_sal ! Ice salinity !------------------------------------------------------------------------------ / !------------------------------------------------------------------------------ &namthd_pnd ! Melt ponds !------------------------------------------------------------------------------ ln_pnd = .true. ! activate melt ponds or not ln_pnd_LEV = .true. ! level ice melt ponds (from Flocco et al 2007,2010 & Holland et al 2012) rn_apnd_min = 0.15 ! minimum ice fraction that contributes to melt pond. range: 0.0 -- 0.15 ?? rn_apnd_max = 0.85 ! maximum ice fraction that contributes to melt pond. range: 0.7 -- 0.85 ?? ln_pnd_CST = .false. ! constant melt ponds rn_apnd = 0.2 ! prescribed pond fraction, at Tsu=0 degC rn_hpnd = 0.05 ! prescribed pond depth, at Tsu=0 degC ln_pnd_lids = .true. ! frozen lids on top of the ponds (only for ln_pnd_LEV) ln_pnd_alb = .true. ! effect of melt ponds on ice albedo / !------------------------------------------------------------------------------ &namini ! Ice initialization !------------------------------------------------------------------------------ nn_iceini_file = _AUTO_ ! netcdf file provided for initialization ! rn_thres_sst = 0.5 ! max temp. above Tfreeze with initial ice = (sst - tfreeze) rn_hti_ini_n = 1.0 ! initial ice thickness (m), North rn_hti_ini_s = 1.0 ! " " South rn_hts_ini_n = 0.3 ! initial snow thickness (m), North rn_hts_ini_s = 0.3 ! " " South rn_ati_ini_n = 0.9 ! initial ice concentration (-), North rn_ati_ini_s = 0.9 ! " " South rn_smi_ini_n = 6.3 ! initial ice salinity (g/kg), North rn_smi_ini_s = 6.3 ! " " South rn_tmi_ini_n = 270. ! initial ice temperature (K), North rn_tmi_ini_s = 270. ! " " South rn_tsu_ini_n = 270. ! initial surface temperature (K), North rn_tsu_ini_s = 270. ! " " South rn_tms_ini_n = 270. ! initial snw temperature (K), North rn_tms_ini_s = 270. ! " " South rn_apd_ini_n = 0.2 ! initial pond fraction (-), North rn_apd_ini_s = 0.2 ! " " South rn_hpd_ini_n = 0.05 ! initial pond depth (m), North rn_hpd_ini_s = 0.05 ! " " South rn_hld_ini_n = 0.0 ! initial pond lid depth (m), North rn_hld_ini_s = 0.0 ! " " South !______!______________________!___________________!___________!_____________!________!___________!__________________!__________!_______________! ! ! file name ! frequency (hours) ! variable ! time interp.! clim ! 'yearly'/ ! weights filename ! rotation ! land/sea mask ! ! ! ! (if <0 months) ! name ! (logical) ! (T/F) ! 'monthly' ! ! pairing ! filename ! sn_hti = 'Ice_initialization' , -12 ,'sithic' , .false. , .true. , 'yearly' , '' , '', '' sn_hts = 'Ice_initialization' , -12 ,'snthic' , .false. , .true. , 'yearly' , '' , '', '' sn_ati = 'Ice_initialization' , -12 ,'siconc' , .false. , .true. , 'yearly' , '' , '', '' sn_smi = 'Ice_initialization' , -12 ,'sisali' , .false. , .true. , 'yearly' , '' , '', '' sn_tmi = 'Ice_initialization' , -12 ,'sitemp' , .false. , .true. , 'yearly' , '' , '', '' sn_tsu = 'Ice_initialization' , -12 ,'sistem' , .false. , .true. , 'yearly' , '' , '', '' sn_tms = 'NOT USED' , -12 ,'tms' , .false. , .true. , 'yearly' , '' , '', '' ! melt ponds (be careful, sn_apd is the pond concentration (not fraction), so it differs from rn_apd) sn_apd = 'NOT USED' , -12 ,'apd' , .false. , .true. , 'yearly' , '' , '', '' sn_hpd = 'NOT USED' , -12 ,'hpd' , .false. , .true. , 'yearly' , '' , '', '' cn_dir='./' / !------------------------------------------------------------------------------ &namalb ! albedo parameters !------------------------------------------------------------------------------ rn_alb_sdry = 0.87 ! dry snow albedo : 0.85 -- 0.87 rn_alb_smlt = 0.82 ! melting snow albedo : 0.72 -- 0.82 rn_alb_idry = 0.65 ! dry ice albedo : 0.54 -- 0.65 rn_alb_imlt = 0.58 ! bare puddled ice albedo : 0.49 -- 0.58 rn_alb_dpnd = 0.30 ! ponded ice albedo : 0.10 -- 0.30 / !------------------------------------------------------------------------------ &namdia ! Diagnostics !------------------------------------------------------------------------------ ln_icediahsb = .true. ! output the heat, mass & salt budgets (T) or not (F) /