Changeset 8512 for branches/2017/dev_r8183_ICEMODEL/NEMOGCM/CONFIG
- Timestamp:
- 2017-09-07T20:08:11+02:00 (7 years ago)
- Location:
- branches/2017/dev_r8183_ICEMODEL/NEMOGCM/CONFIG
- Files:
-
- 2 edited
-
ORCA2_LIM3_PISCES/EXP00/namelist_ice_cfg (modified) (1 diff)
-
SHARED/namelist_ice_lim3_ref (modified) (3 diffs)
Legend:
- Unmodified
- Added
- Removed
-
branches/2017/dev_r8183_ICEMODEL/NEMOGCM/CONFIG/ORCA2_LIM3_PISCES/EXP00/namelist_ice_cfg
r8321 r8512 1 1 !!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 2 2 !! LIM3 configuration namelist: Overwrites SHARED/namelist_ice_lim3_ref 3 !! 1 - Generic parameters (namicerun) 4 !! 2 - Diagnostics (namicediag) 5 !! 3 - Ice initialization (namiceini) 6 !! 4 - Ice discretization (namiceitd) 7 !! 5 - Ice dynamics and transport (namicedyn) 8 !! 6 - Ice thermodynamics (namicethd) 9 !! 7 - Ice salinity (namicesal) 10 !! 8 - Ice mechanical redistribution (namiceitdme) 11 !! 9 - Ice/snow albedos (namicealb) 12 !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 3 !! 1 - Generic parameters (namice_run) 4 !! 2 - Ice thickness discretization (namice_itd) 5 !! 3 - Ice ridging/rafting (namice_rdgrft) 6 !! 4 - Ice rheology (namice_rhg) 7 !! 5 - Ice advection (namice_adv) 8 !! 6 - Ice thermodynamics (namice_thd) 9 !! 7 - Ice salinity (namice_sal) 10 !! 8 - Ice melt ponds (namice_mp) 11 !! 9 - Ice initialization (namice_ini) 12 !! 10 - Ice/snow albedos (namice_alb) 13 !! 11 - Ice diagnostics (namice_dia) 14 !!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 15 ! 13 16 !------------------------------------------------------------------------------ 14 &namice run ! Generic parameters17 &namice_run ! Generic parameters 15 18 !------------------------------------------------------------------------------ 16 19 / 17 20 !------------------------------------------------------------------------------ 18 &namice diag ! Diagnostics21 &namice_itd ! Ice discretization 19 22 !------------------------------------------------------------------------------ 20 23 / 21 24 !------------------------------------------------------------------------------ 22 &namice ini ! Ice initialization25 &namice_rdgrft ! Ice ridging/rafting 23 26 !------------------------------------------------------------------------------ 24 27 / 25 28 !------------------------------------------------------------------------------ 26 &namice itd ! Ice discretization29 &namice_rhg ! Ice rheology 27 30 !------------------------------------------------------------------------------ 28 31 / 29 32 !------------------------------------------------------------------------------ 30 &namice dyn ! Ice dynamics and transport33 &namice_adv ! Ice advection 31 34 !------------------------------------------------------------------------------ 32 35 / 33 36 !------------------------------------------------------------------------------ 34 &namice thd ! Ice thermodynamics37 &namice_thd ! Ice thermodynamics 35 38 !------------------------------------------------------------------------------ 36 39 / 37 40 !------------------------------------------------------------------------------ 38 &namice sal ! Ice salinity41 &namice_sal ! Ice salinity 39 42 !------------------------------------------------------------------------------ 40 43 / 41 44 !------------------------------------------------------------------------------ 42 &namice itdme ! Ice mechanical redistribution (ridging and rafting)45 &namicemp ! Melt ponds 43 46 !------------------------------------------------------------------------------ 44 47 / 45 !----------------------------------------------------------------------- 46 &namice alb ! albedo parameters47 !----------------------------------------------------------------------- 48 !------------------------------------------------------------------------------ 49 &namice_ini ! Ice initialization 50 !------------------------------------------------------------------------------ 48 51 / 52 !------------------------------------------------------------------------------ 53 &namice_alb ! albedo parameters 54 !------------------------------------------------------------------------------ 55 / 56 !------------------------------------------------------------------------------ 57 &namice_dia ! Diagnostics 58 !------------------------------------------------------------------------------ 59 / -
branches/2017/dev_r8183_ICEMODEL/NEMOGCM/CONFIG/SHARED/namelist_ice_lim3_ref
r8321 r8512 1 1 !!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 2 2 !! LIM3 namelist: 3 !! 1 - Generic parameters (namicerun) 4 !! 2 - Diagnostics (namicediag) 5 !! 3 - Ice initialization (namiceini) 6 !! 4 - Ice discretization (namiceitd) 7 !! 5 - Ice dynamics and transport (namicedyn) 8 !! 6 - Ice thermodynamics (namicethd) 9 !! 7 - Ice salinity (namicesal) 10 !! 8 - Ice mechanical redistribution (namiceitdme) 11 !! 9 - Ice/snow albedos (namicealb) 3 !! 1 - Generic parameters (namice_run) 4 !! 2 - Ice thickness discretization (namice_itd) 5 !! 3 - Ice ridging/rafting (namice_rdgrft) 6 !! 4 - Ice rheology (namice_rhg) 7 !! 5 - Ice advection (namice_adv) 8 !! 6 - Ice thermodynamics (namice_thd) 9 !! 7 - Ice salinity (namice_sal) 10 !! 8 - Ice melt ponds (namice_mp) 11 !! 9 - Ice initialization (namice_ini) 12 !! 10 - Ice/snow albedos (namice_alb) 13 !! 11 - Ice diagnostics (namice_dia) 12 14 !!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 13 15 ! 14 16 !------------------------------------------------------------------------------ 15 &namicerun ! Generic parameters 16 !------------------------------------------------------------------------------ 17 jpl = 5 ! number of ice categories 18 nlay_i = 2 ! number of ice layers 19 nlay_s = 1 ! number of snow layers (only 1 is working) 20 nn_monocat = 0 ! virtual ITD mono-category parameterizations (1-4 => jpl = 1 only) or not (0) 21 ! 2: simple piling instead of ridging --- temporary option 22 ! 3: activate G(he) only --- temporary option 23 ! 4: activate extra lateral melting only --- temporary option 24 rn_amax_n = 0.997 ! maximum tolerated ice concentration NH 25 rn_amax_s = 0.997 ! maximum tolerated ice concentration SH 26 cn_icerst_in = "restart_ice" ! suffix of ice restart name (input) 27 cn_icerst_out = "restart_ice" ! suffix of ice restart name (output) 28 cn_icerst_indir = "." ! directory to read input ice restarts 29 cn_icerst_outdir = "." ! directory to write output ice restarts 30 ln_limthd = .true. ! ice thermo (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 31 ln_limdyn = .true. ! ice dynamics (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 32 nn_limdyn = 2 ! (ln_limdyn=T) switch for ice dynamics 33 ! 2: total 34 ! 1: advection only (no diffusion, no ridging/rafting) 35 ! 0: advection only (as 1 but with prescribed velocity, bypass rheology) 36 rn_uice = 0.00001 ! (nn_limdyn=0) ice u-velocity 37 rn_vice = -0.00001 ! (nn_limdyn=0) ice v-velocity 38 / 39 !------------------------------------------------------------------------------ 40 &namicediag ! Diagnostics 41 !------------------------------------------------------------------------------ 42 ln_limdiachk = .false. ! check online the heat, mass & salt budgets (T) or not (F) 43 ln_limdiahsb = .false. ! output the heat, mass & salt budgets (T) or not (F) 44 ln_limctl = .false. ! ice points output for debug (T or F) 45 iiceprt = 10 ! i-index for debug 46 jiceprt = 10 ! j-index for debug 47 / 48 !------------------------------------------------------------------------------ 49 &namiceini ! Ice initialization 17 &namice_run ! Generic parameters 18 !------------------------------------------------------------------------------ 19 jpl = 5 ! number of ice categories 20 nlay_i = 2 ! number of ice layers 21 nlay_s = 1 ! number of snow layers (only 1 is working) 22 nn_monocat = 0 ! virtual ITD mono-category parameterizations (1-4 => jpl = 1 only) or not (0) 23 ! 2: simple piling instead of ridging --- temporary option 24 ! 3: activate G(he) only --- temporary option 25 ! 4: activate extra lateral melting only --- temporary option 26 rn_amax_n = 0.997 ! maximum tolerated ice concentration NH 27 rn_amax_s = 0.997 ! maximum tolerated ice concentration SH 28 cn_icerst_in = "restart_ice" ! suffix of ice restart name (input) 29 cn_icerst_out = "restart_ice" ! suffix of ice restart name (output) 30 cn_icerst_indir = "." ! directory to read input ice restarts 31 cn_icerst_outdir = "." ! directory to write output ice restarts 32 / 33 !------------------------------------------------------------------------------ 34 &namice_itd ! Ice discretization 35 !------------------------------------------------------------------------------ 36 rn_himean = 2.0 ! expected domain-average ice thickness (m) 37 / 38 !------------------------------------------------------------------------------ 39 &namice_rdgrft ! Ice ridging/rafting 40 !------------------------------------------------------------------------------ 41 ! -- ice_rdgrft_strength -- ! 42 ln_str_Hib = .true. ! ice strength param.: Hibler_79 => P = pstar*<h>*exp(-c_rhg*A) 43 rn_pstar = 2.0e+04 ! ice strength thickness parameter (N/m2) 44 rn_crhg = 20.0 ! ice strength conc. parameter (-) 45 ln_str_Rot = .false. ! ice strength param.: Rothrock_75 => P = Cf*coeff*integral(wr.h^2) 46 rn_perdg = 17.0 ! ridging work divided by pot. energy change in ridging 47 ! -- ice_rdgrft -- ! 48 rn_cs = 0.5 ! fraction of shearing energy contributing to ridging 49 ! -- ice_rdgrft_prep -- ! 50 ln_partf_lin = .false. ! Linear ridging participation function (Thorndike et al, 1975) 51 rn_gstar = 0.15 ! fractional area of thin ice being ridged 52 ln_partf_exp = .true. ! Exponential ridging participation function (Lipscomb, 2007) 53 rn_astar = 0.03 ! exponential measure of ridging ice fraction [set to 0.05 if hstar=100] 54 ln_ridging = .true. ! ridging activated (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 55 rn_hstar = 25.0 ! determines the maximum thickness of ridged ice (m) (Hibler, 1980) 56 rn_porordg = 0.3 ! porosity of newly ridged ice (Lepparanta et al., 1995) 57 rn_fsnwrdg = 0.5 ! snow volume fraction that survives in ridging 58 rn_fpndrdg = 1.0 ! pond fraction that survives in ridging (small a priori) 59 ln_rafting = .true. ! rafting activated (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 60 rn_hraft = 0.75 ! threshold thickness for rafting (m) 61 rn_craft = 5.0 ! squeezing coefficient used in the rafting function 62 rn_fsnwrft = 0.5 ! snow volume fraction that survives in rafting 63 rn_fpndrft = 1.0 ! pond fraction that survives in rafting (0.5 a priori) 64 / 65 !------------------------------------------------------------------------------ 66 &namice_rhg ! Ice rheology 67 !------------------------------------------------------------------------------ 68 rn_ishlat = 2. ! free slip (0) ; partial slip (0-2) ; no slip (2) ; strong slip (>2) 69 rn_cio = 5.0e-03 ! ice-ocean drag coefficient (-) 70 rn_creepl = 1.0e-12 ! creep limit (s-1) 71 rn_ecc = 2.0 ! eccentricity of the elliptical yield curve 72 nn_nevp = 120 ! number of EVP subcycles 73 rn_relast = 0.333 ! ratio of elastic timescale to ice time step: Telast = dt_ice * rn_relast 74 ! advised value: 1/3 (rn_nevp=120) or 1/9 (rn_nevp=300) 75 ln_landfast = .false. ! landfast ice parameterization (T or F) 76 rn_gamma = 0.15 ! fraction of ocean depth that ice must reach to initiate landfast 77 ! recommended range: [0.1 ; 0.25] 78 rn_icebfr = 10. ! maximum bottom stress per unit area of contact (N/m2) 79 ! a very large value ensures ice velocity=0 even with a small contact area 80 ! recommended range: ?? (should be greater than atm-ice stress => >0.1 N/m2) 81 rn_lfrelax = 1.e-5 ! relaxation time scale to reach static friction (s-1) 82 / 83 !------------------------------------------------------------------------------ 84 &namice_adv ! Ice advection 85 !------------------------------------------------------------------------------ 86 ln_icedyn = .true. ! ice dynamics (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 87 nn_icedyn = 2 ! switch for ice dynamics 88 ! 2: total 89 ! 1: advection only (no diffusion, no ridging/rafting) 90 ! 0: advection only (as 1 but with prescribed velocity, bypass rheology) 91 rn_uice = 0.00001 ! prescribed ice u-velocity 92 rn_vice = -0.00001 ! prescribed ice v-velocity 93 ! -- ice_adv -- ! 94 ln_adv_Pra = .false. ! Advection scheme (Prather) 95 ln_adv_UMx = .true. ! Advection scheme (Ultimate-Macho) 96 nn_UMx = 5 ! order of the scheme for UMx (1-5) 97 / 98 !------------------------------------------------------------------------------ 99 &namice_thd ! Ice thermodynamics 100 !------------------------------------------------------------------------------ 101 ln_limthd = .true. ! ice thermo (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 102 ! -- limthd_dif -- ! 103 rn_kappa_i = 1.0 ! radiation attenuation coefficient in sea ice (m-1) 104 nn_ice_thcon = 1 ! sea ice thermal conductivity 105 ! 0: k = k0 + beta.S/T (Untersteiner, 1964) 106 ! 1: k = k0 + beta1.S/T - beta2.T (Pringle et al., 2007) 107 ln_dqnsice = .true. ! change the surface non-solar flux with surface temperature (T) or not (F) 108 rn_cdsn = 0.31 ! thermal conductivity of the snow (0.31 W/m/K, Maykut and Untersteiner, 1971) 109 ! Obs: 0.1-0.5 (Lecomte et al, JAMES 2013) 110 ! -- limthd_dh -- ! 111 ln_limdH = .true. ! activate ice thickness change from growing/melting (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 112 rn_betas = 0.66 ! exponent in lead-ice repratition of snow precipitation 113 ! betas = 1 -> equipartition, betas < 1 -> more on leads 114 ! -- limthd_da -- ! 115 ln_limdA = .true. ! activate lateral melting param. (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 116 rn_beta = 1.0 ! (ln_latmelt=T) coef. beta for lateral melting param. Recommended range=[0.8-1.2] 117 ! => decrease = more melt and melt peaks toward higher concentration (A~0.5 for beta=1 ; A~0.8 for beta=0.2) 118 ! 0.3 = best fit for western Fram Strait and Antarctica 119 ! 1.4 = best fit for eastern Fram Strait 120 rn_dmin = 8. ! (ln_latmelt=T) minimum floe diameter for lateral melting param. Recommended range=[6-10] 121 ! => 6 vs 8m = +40% melting at the peak (A~0.5) 122 ! 10 vs 8m = -20% melting 123 ! -- limthd_lac -- ! 124 ln_limdO = .true. ! activate ice growth in open-water (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 125 rn_hnewice = 0.1 ! thickness for new ice formation in open water (m) 126 ln_frazil = .false. ! Frazil ice parameterization (ice collection as a function of wind) 127 rn_maxfrazb = 1.0 ! (ln_frazil=T) maximum fraction of frazil ice collecting at the ice base 128 rn_vfrazb = 0.417 ! (ln_frazil=T) thresold drift speed for frazil ice collecting at the ice bottom (m/s) 129 rn_Cfrazb = 5.0 ! (ln_frazil=T) squeezing coefficient for frazil ice collecting at the ice bottom 130 ! -- limitd_th -- ! 131 rn_himin = 0.1 ! minimum ice thickness (m) used in remapping, must be smaller than rn_hnewice 132 ! -- icestp -- ! 133 nn_limflx = -1 ! LIM3 Multi-category heat flux formulation (use -1 if LIM3 is not used) 134 ! =-1 Use per-category fluxes, bypass redistributor, forced mode only, not yet implemented coupled 135 ! = 0 Average per-category fluxes (forced and coupled mode) 136 ! = 1 Average and redistribute per-category fluxes, forced mode only, not yet implemented coupled 137 ! = 2 Redistribute a single flux over categories (coupled mode only) 138 / 139 !------------------------------------------------------------------------------ 140 &namice_sal ! Ice salinity 141 !------------------------------------------------------------------------------ 142 ! -- limthd_sal -- ! 143 ln_limdS = .true. ! activate gravity drainage and flushing (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 144 nn_icesal = 2 ! ice salinity option 145 ! 1: constant ice salinity (S=rn_icesal) 146 ! 2: varying salinity parameterization S(z,t) 147 ! 3: prescribed salinity profile S(z), Schwarzacher, 1959 148 rn_icesal = 4. ! (nn_icesal=1) ice salinity (g/kg) 149 rn_sal_gd = 5. ! restoring ice salinity, gravity drainage (g/kg) 150 rn_time_gd = 1.73e+6 ! restoring time scale, gravity drainage (s) 151 rn_sal_fl = 2. ! restoring ice salinity, flushing (g/kg) 152 rn_time_fl = 8.64e+5 ! restoring time scale, flushing (s) 153 rn_simax = 20. ! maximum tolerated ice salinity (g/kg) 154 rn_simin = 0.1 ! minimum tolerated ice salinity (g/kg) 155 / 156 !------------------------------------------------------------------------------ 157 &namicemp ! Melt ponds 158 !------------------------------------------------------------------------------ 159 ! -- limmp -- ! 160 ln_pnd = .false. ! active melt ponds 161 ln_pnd_rad = .false. ! active melt ponds radiative coupling 162 ln_pnd_fw = .false. ! active melt ponds freshwater coupling 163 nn_pnd_scheme = 0 ! type of melt pond scheme : =0 prescribed ( Tsu=0 ), =1 empirical, =2 topographic 164 rn_apnd = 0.2 ! prescribed pond fraction, at Tsu=0 : (0<rn_apnd<1, nn_pnd_scheme = 0) 165 rn_hpnd = 0.05 ! prescribed pond depth, at Tsu=0 : (0<rn_apnd<1, nn_pnd_scheme = 0) 166 / 167 !------------------------------------------------------------------------------ 168 &namice_ini ! Ice initialization 50 169 !------------------------------------------------------------------------------ 51 170 ! -- limistate -- ! 52 ln_ limini = .true. ! activate ice initialization (T) or not (F)53 ln_ limini_file = .false. ! netcdf file provided for initialization (T) or not (F)171 ln_iceini = .true. ! activate ice initialization (T) or not (F) 172 ln_iceini_file = .false. ! netcdf file provided for initialization (T) or not (F) 54 173 rn_thres_sst = 2.0 ! maximum water temperature with initial ice (degC) 55 174 rn_hts_ini_n = 0.3 ! initial real snow thickness (m), North … … 73 192 / 74 193 !------------------------------------------------------------------------------ 75 &namiceitd ! Ice discretization 76 !------------------------------------------------------------------------------ 77 rn_himean = 2.0 ! expected domain-average ice thickness (m) 78 / 79 !------------------------------------------------------------------------------ 80 &namicedyn ! Ice dynamics and transport 81 !------------------------------------------------------------------------------ 82 ! -- limtrp & limadv -- ! 83 nn_limadv = 0 ! choose the advection scheme (-1=Prather ; 0=Ultimate-Macho) 84 nn_limadv_ord = 5 ! choose the order of the advection scheme (if nn_limadv=0) 85 ! -- limitd_me -- ! 86 nn_icestr = 0 ! ice strength parameteriztaion 87 ! 0: Hibler_79 P = pstar*<h>*exp(-c_rhg*A) 88 ! 1: Rothrock_75 P = Cf*coeff*integral(wr.h^2) 89 rn_pe_rdg = 17.0 ! (nn_icestr=1) ridging work divided by pot. energy change in ridging 90 rn_pstar = 2.0e+04 ! (nn_icestr=0) ice strength thickness parameter (N/m2) 91 rn_crhg = 20.0 ! (nn_icestr=0) ice strength conc. parameter (-) 92 ln_icestr_bvf = .false. ! ice strength function brine volume (T) or not (F) 93 ! 94 ! -- limdyn & limrhg -- ! 95 rn_ishlat = 2. ! free slip (0) ; partial slip (0-2) ; no slip (2) ; strong slip (>2) 96 rn_cio = 5.0e-03 ! ice-ocean drag coefficient (-) 97 rn_creepl = 1.0e-12 ! creep limit (s-1) 98 rn_ecc = 2.0 ! eccentricity of the elliptical yield curve 99 nn_nevp = 120 ! number of EVP subcycles 100 rn_relast = 0.333 ! ratio of elastic timescale to ice time step: Telast = dt_ice * rn_relast 101 ! advised value: 1/3 (rn_nevp=120) or 1/9 (rn_nevp=300) 102 ln_landfast = .false. ! landfast ice parameterization (T or F) 103 rn_gamma = 0.15 ! (ln_landfast=T) fraction of ocean depth that ice must reach to initiate landfast 104 ! recommended range: [0.1 ; 0.25] 105 rn_icebfr = 10. ! (ln_landfast=T) maximum bottom stress per unit area of contact (N/m2) 106 ! a very large value ensures ice velocity=0 even with a small contact area 107 ! recommended range: ?? (should be greater than atm-ice stress => >0.1 N/m2) 108 rn_lfrelax = 1.e-5 ! (ln_landfast=T) relaxation time scale to reach static friction (s-1) 109 / 110 !------------------------------------------------------------------------------ 111 &namicethd ! Ice thermodynamics 112 !------------------------------------------------------------------------------ 113 ! -- limthd_dif -- ! 114 rn_kappa_i = 1.0 ! radiation attenuation coefficient in sea ice (m-1) 115 nn_ice_thcon = 1 ! sea ice thermal conductivity 116 ! 0: k = k0 + beta.S/T (Untersteiner, 1964) 117 ! 1: k = k0 + beta1.S/T - beta2.T (Pringle et al., 2007) 118 ln_dqnsice = .true. ! change the surface non-solar flux with surface temperature (T) or not (F) 119 rn_cdsn = 0.31 ! thermal conductivity of the snow (0.31 W/m/K, Maykut and Untersteiner, 1971) 120 ! Obs: 0.1-0.5 (Lecomte et al, JAMES 2013) 121 ! -- limthd_dh -- ! 122 ln_limdH = .true. ! activate ice thickness change from growing/melting (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 123 rn_betas = 0.66 ! exponent in lead-ice repratition of snow precipitation 124 ! betas = 1 -> equipartition, betas < 1 -> more on leads 125 ! -- limthd_da -- ! 126 ln_limdA = .true. ! activate lateral melting param. (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 127 rn_beta = 1.0 ! (ln_latmelt=T) coef. beta for lateral melting param. Recommended range=[0.8-1.2] 128 ! => decrease = more melt and melt peaks toward higher concentration (A~0.5 for beta=1 ; A~0.8 for beta=0.2) 129 ! 0.3 = best fit for western Fram Strait and Antarctica 130 ! 1.4 = best fit for eastern Fram Strait 131 rn_dmin = 8. ! (ln_latmelt=T) minimum floe diameter for lateral melting param. Recommended range=[6-10] 132 ! => 6 vs 8m = +40% melting at the peak (A~0.5) 133 ! 10 vs 8m = -20% melting 134 ! -- limthd_lac -- ! 135 ln_limdO = .true. ! activate ice growth in open-water (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 136 rn_hnewice = 0.1 ! thickness for new ice formation in open water (m) 137 ln_frazil = .false. ! Frazil ice parameterization (ice collection as a function of wind) 138 rn_maxfrazb = 1.0 ! (ln_frazil=T) maximum fraction of frazil ice collecting at the ice base 139 rn_vfrazb = 0.417 ! (ln_frazil=T) thresold drift speed for frazil ice collecting at the ice bottom (m/s) 140 rn_Cfrazb = 5.0 ! (ln_frazil=T) squeezing coefficient for frazil ice collecting at the ice bottom 141 ! -- limitd_th -- ! 142 rn_himin = 0.1 ! minimum ice thickness (m) used in remapping, must be smaller than rn_hnewice 143 ! -- icestp -- ! 144 nn_limflx = -1 ! LIM3 Multi-category heat flux formulation (use -1 if LIM3 is not used) 145 ! =-1 Use per-category fluxes, bypass redistributor, forced mode only, not yet implemented coupled 146 ! = 0 Average per-category fluxes (forced and coupled mode) 147 ! = 1 Average and redistribute per-category fluxes, forced mode only, not yet implemented coupled 148 ! = 2 Redistribute a single flux over categories (coupled mode only) 149 / 150 !------------------------------------------------------------------------------ 151 &namicesal ! Ice salinity 152 !------------------------------------------------------------------------------ 153 ! -- limthd_sal -- ! 154 ln_limdS = .true. ! activate gravity drainage and flushing (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 155 nn_icesal = 2 ! ice salinity option 156 ! 1: constant ice salinity (S=rn_icesal) 157 ! 2: varying salinity parameterization S(z,t) 158 ! 3: prescribed salinity profile S(z), Schwarzacher, 1959 159 rn_icesal = 4. ! (nn_icesal=1) ice salinity (g/kg) 160 rn_sal_gd = 5. ! restoring ice salinity, gravity drainage (g/kg) 161 rn_time_gd = 1.73e+6 ! restoring time scale, gravity drainage (s) 162 rn_sal_fl = 2. ! restoring ice salinity, flushing (g/kg) 163 rn_time_fl = 8.64e+5 ! restoring time scale, flushing (s) 164 rn_simax = 20. ! maximum tolerated ice salinity (g/kg) 165 rn_simin = 0.1 ! minimum tolerated ice salinity (g/kg) 166 / 167 !------------------------------------------------------------------------------ 168 &namicemp ! Melt ponds 169 !------------------------------------------------------------------------------ 170 ! -- limmp -- ! 171 ln_pnd = .false. ! active melt ponds 172 ln_pnd_rad = .false. ! active melt ponds radiative coupling 173 ln_pnd_fw = .false. ! active melt ponds freshwater coupling 174 nn_pnd_scheme = 0 ! type of melt pond scheme : =0 prescribed ( Tsu=0 ), =1 empirical, =2 topographic 175 rn_apnd = 0.2 ! prescribed pond fraction, at Tsu=0 : (0<rn_apnd<1, nn_pnd_scheme = 0) 176 rn_hpnd = 0.05 ! prescribed pond depth, at Tsu=0 : (0<rn_apnd<1, nn_pnd_scheme = 0) 177 / 178 !------------------------------------------------------------------------------ 179 &namiceitdme ! Ice mechanical redistribution (ridging and rafting) 180 !------------------------------------------------------------------------------ 181 ! -- limitd_me -- ! 182 rn_cs = 0.5 ! fraction of shearing energy contributing to ridging 183 nn_partfun = 1 ! type of ridging participation function 184 ! 0: linear (Thorndike et al, 1975) 185 ! 1: exponential (Lipscomb, 2007) 186 rn_gstar = 0.15 ! (nn_partfun = 0) fractional area of thin ice being ridged 187 rn_astar = 0.03 ! (nn_partfun = 1) exponential measure of ridging ice fraction [set to 0.05 if hstar=100] 188 ln_ridging = .true. ! ridging activated (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 189 rn_hstar = 25.0 ! (ln_ridging = T) determines the maximum thickness of ridged ice (m) (Hibler, 1980) 190 rn_por_rdg = 0.3 ! (ln_ridging = T) porosity of newly ridged ice (Lepparanta et al., 1995) 191 rn_fsnowrdg = 0.5 ! (ln_ridging = T) snow volume fraction that survives in ridging 192 rn_fpondrdg = 1.0 ! (ln_ridging = T) pond fraction that survives in ridging (small a priori) 193 ln_rafting = .true. ! rafting activated (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 194 rn_hraft = 0.75 ! (ln_rafting = T) threshold thickness for rafting (m) 195 rn_craft = 5.0 ! (ln_rafting = T) squeezing coefficient used in the rafting function 196 rn_fsnowrft = 0.5 ! (ln_rafting = T) snow volume fraction that survives in rafting 197 rn_fpondrft = 1.0 ! (ln_rafting = T) pond fraction that survives in rafting (0.5 a priori) 198 / 199 !----------------------------------------------------------------------- 200 &namicealb ! albedo parameters 201 !----------------------------------------------------------------------- 194 &namice_alb ! albedo parameters 195 !------------------------------------------------------------------------------ 202 196 nn_ice_alb = 1 ! parameterization of ice/snow albedo 203 197 ! 0: Shine & Henderson-Sellers (JGR 1985), giving clear-sky albedo … … 210 204 rn_alb_dpnd = 0.27 ! ponded ice albedo : 0.25 ( '' ) ; 0.27 ( '' ) ; obs 0.10-0.30 ( '' ) 211 205 / 206 !------------------------------------------------------------------------------ 207 &namice_dia ! Diagnostics 208 !------------------------------------------------------------------------------ 209 ln_limdiachk = .false. ! check online the heat, mass & salt budgets (T) or not (F) 210 ln_limdiahsb = .false. ! output the heat, mass & salt budgets (T) or not (F) 211 ln_limctl = .false. ! ice points output for debug (T or F) 212 iiceprt = 10 ! i-index for debug 213 jiceprt = 10 ! j-index for debug 214 /
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