- Timestamp:
- 2020-09-15T09:27:47+02:00 (4 years ago)
- File:
-
- 1 edited
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NEMO/branches/2020/temporary_r4_trunk/cfgs/SHARED/namelist_ice_ref
r12121 r13466 43 43 ln_cat_usr = .false. ! ice categories are defined by rn_catbnd below (m) 44 44 rn_catbnd = 0.,0.45,1.1,2.1,3.7,6.0 45 rn_himin = 0.1 ! minimum ice thickness (m) used in remapping 45 rn_himin = 0.1 ! minimum ice thickness (m) allowed 46 rn_himax = 99.0 ! maximum ice thickness (m) allowed 46 47 / 47 48 !------------------------------------------------------------------------------ … … 56 57 rn_ishlat = 2. ! lbc : free slip (0) ; partial slip (0-2) ; no slip (2) ; strong slip (>2) 57 58 ln_landfast_L16 = .false. ! landfast: parameterization from Lemieux 2016 58 rn_ depfra= 0.125 ! fraction of ocean depth that ice must reach to initiate landfast59 rn_lf_depfra = 0.125 ! fraction of ocean depth that ice must reach to initiate landfast 59 60 ! recommended range: [0.1 ; 0.25] 60 rn_ icebfr = 15. ! maximum bottom stress per unit volume [N/m3]61 rn_lf relax= 1.e-5 ! relaxation time scale to reach static friction [s-1]62 rn_ tensile= 0.05 ! isotropic tensile strength [0-0.5??]61 rn_lf_bfr = 15. ! maximum bottom stress per unit volume [N/m3] 62 rn_lf_relax = 1.e-5 ! relaxation time scale to reach static friction [s-1] 63 rn_lf_tensile = 0.05 ! isotropic tensile strength [0-0.5??] 63 64 / 64 65 !------------------------------------------------------------------------------ … … 97 98 rn_relast = 0.333 ! ratio of elastic timescale to ice time step: Telast = dt_ice * rn_relast 98 99 ! advised value: 1/3 (rn_nevp=120) or 1/9 (rn_nevp=300) 100 ln_rhg_chkcvg = .false. ! check convergence of rheology (outputs: file ice_cvg.nc & variable uice_cvg) 99 101 / 100 102 !------------------------------------------------------------------------------ 101 103 &namdyn_adv ! Ice advection 102 104 !------------------------------------------------------------------------------ 103 ln_adv_Pra = .true. ! Advection scheme (Prather)104 ln_adv_UMx = .false. 105 ln_adv_Pra = .true. ! Advection scheme (Prather) 106 ln_adv_UMx = .false. ! Advection scheme (Ultimate-Macho) 105 107 nn_UMx = 5 ! order of the scheme for UMx (1-5 ; 20=centered 2nd order) 106 108 / … … 109 111 !------------------------------------------------------------------------------ 110 112 rn_cio = 5.0e-03 ! ice-ocean drag coefficient (-) 111 rn_blow_s = 0.66 ! mesure of snow blowing into the leads 113 nn_snwfra = 0 ! calculate the fraction of ice covered by snow (for zdf and albedo) 114 ! = 0 fraction = 1 (if snow) or 0 (if no snow) 115 ! = 1 fraction = 1-exp(-0.2*rhos*hsnw) [MetO formulation] 116 ! = 2 fraction = hsnw / (hsnw+0.02) [CICE formulation] 117 rn_snwblow = 0.66 ! mesure of snow blowing into the leads 112 118 ! = 1 => no snow blowing, < 1 => some snow blowing 113 119 nn_flxdist = -1 ! Redistribute heat flux over ice categories … … 118 124 ln_cndflx = .false. ! Use conduction flux as surface boundary conditions (i.e. for Jules coupling) 119 125 ln_cndemulate = .false. ! emulate conduction flux (if not provided in the inputs) 126 nn_qtrice = 0 ! Solar flux transmitted thru the surface scattering layer: 127 ! = 0 Grenfell and Maykut 1977 (depends on cloudiness and is 0 when there is snow) 128 ! = 1 Lebrun 2019 (equals 0.3 anytime with different melting/dry snw conductivities) 120 129 / 121 130 !------------------------------------------------------------------------------ … … 126 135 ln_icedO = .true. ! activate ice growth in open-water (T) or not (F) 127 136 ln_icedS = .true. ! activate brine drainage (T) or not (F) 137 ! 138 ln_leadhfx = .true. ! heat in the leads is used to melt sea-ice before warming the ocean 128 139 / 129 140 !------------------------------------------------------------------------------ … … 135 146 rn_cnd_s = 0.31 ! thermal conductivity of the snow (0.31 W/m/K, Maykut and Untersteiner, 1971) 136 147 ! Obs: 0.1-0.5 (Lecomte et al, JAMES 2013) 137 rn_kappa_i = 1.0 ! radiation attenuation coefficient in sea ice [1/m] 148 rn_kappa_i = 1.0 ! radiation attenuation coefficient in sea ice [1/m] 149 rn_kappa_s = 10.0 ! nn_qtrice = 0: radiation attenuation coefficient in snow [1/m] 150 rn_kappa_smlt = 7.0 ! nn_qtrice = 1: radiation attenuation coefficient in melting snow [1/m] 151 rn_kappa_sdry = 10.0 ! radiation attenuation coefficient in dry snow [1/m] 152 ln_zdf_chkcvg = .false. ! check convergence of heat diffusion scheme (outputs: tice_cvgerr, tice_cvgstp) 138 153 / 139 154 !------------------------------------------------------------------------------ … … 175 190 &namthd_pnd ! Melt ponds 176 191 !------------------------------------------------------------------------------ 177 ln_pnd = .false. ! activate melt ponds or not 178 ln_pnd_H12 = .false. ! activate evolutive melt ponds (from Holland et al 2012) 179 ln_pnd_CST = .false. ! activate constant melt ponds 180 rn_apnd = 0.2 ! prescribed pond fraction, at Tsu=0 degC 181 rn_hpnd = 0.05 ! prescribed pond depth, at Tsu=0 degC 182 ln_pnd_alb = .false. ! melt ponds affect albedo or not 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) 194 rn_apnd_min = 0.15 ! minimum ice fraction that contributes to melt pond. range: 0.0 -- 0.15 ?? 195 rn_apnd_max = 0.85 ! maximum ice fraction that contributes to melt pond. range: 0.7 -- 0.85 ?? 196 ln_pnd_CST = .false. ! constant melt ponds 197 rn_apnd = 0.2 ! prescribed pond fraction, at Tsu=0 degC 198 rn_hpnd = 0.05 ! prescribed pond depth, at Tsu=0 degC 199 ln_pnd_lids = .true. ! frozen lids on top of the ponds (only for ln_pnd_LEV) 200 ln_pnd_alb = .true. ! effect of melt ponds on ice albedo 183 201 / 184 202 !------------------------------------------------------------------------------ … … 186 204 !------------------------------------------------------------------------------ 187 205 ln_iceini = .true. ! activate ice initialization (T) or not (F) 188 ln_iceini_file = .false. ! netcdf file provided for initialization (T) or not (F) 206 nn_iceini_file = 0 ! 0 = Initialise sea ice based on SSTs 207 ! 1 = Initialise sea ice from single category netcdf file 208 ! 2 = Initialise sea ice from multi category restart file 189 209 rn_thres_sst = 2.0 ! max temp. above Tfreeze with initial ice = (sst - tfreeze) 190 210 rn_hti_ini_n = 3.0 ! initial ice thickness (m), North … … 206 226 rn_hpd_ini_n = 0.05 ! initial pond depth (m), North 207 227 rn_hpd_ini_s = 0.05 ! " " South 208 ! -- for ln_iceini_file = T 228 rn_hld_ini_n = 0.0 ! initial pond lid depth (m), North 229 rn_hld_ini_s = 0.0 ! " " South 230 ! -- for nn_iceini_file = 1 209 231 sn_hti = 'Ice_initialization' , -12 ,'hti' , .false. , .true., 'yearly' , '' , '', '' 210 232 sn_hts = 'Ice_initialization' , -12 ,'hts' , .false. , .true., 'yearly' , '' , '', '' … … 217 239 sn_apd = 'NOT USED' , -12 ,'apd' , .false. , .true., 'yearly' , '' , '', '' 218 240 sn_hpd = 'NOT USED' , -12 ,'hpd' , .false. , .true., 'yearly' , '' , '', '' 241 sn_hld = 'NOT USED' , -12 ,'hld' , .false. , .true., 'yearly' , '' , '', '' 219 242 cn_dir='./' 220 243 / … … 238 261 ln_icediahsb = .false. ! output the heat, mass & salt budgets (T) or not (F) 239 262 ln_icectl = .false. ! ice points output for debug (T or F) 240 iiceprt = 10 !i-index for debug241 jiceprt = 10 !j-index for debug242 / 263 iiceprt = 10 ! i-index for debug 264 jiceprt = 10 ! j-index for debug 265 /
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