Changeset 7646 for trunk/NEMOGCM/CONFIG/SHARED/namelist_ice_lim3_ref
- Timestamp:
- 2017-02-06T10:25:03+01:00 (7 years ago)
- File:
-
- 1 edited
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trunk/NEMOGCM/CONFIG/SHARED/namelist_ice_lim3_ref (modified) (2 diffs)
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trunk/NEMOGCM/CONFIG/SHARED/namelist_ice_lim3_ref
r6416 r7646 1 1 !!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 2 !! LIM3 namelist 2 !! LIM3 namelist: 3 3 !! 1 - Generic parameters (namicerun) 4 !! 2 - Ice initialization (namiceini) 5 !! 3 - Ice discretization (namiceitd) 6 !! 4 - Ice dynamics and transport (namicedyn) 7 !! 5 - Ice thermodynamics (namicethd) 8 !! 6 - Ice salinity (namicesal) 9 !! 7 - Ice mechanical redistribution (namiceitdme) 10 !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 4 !! 2 - Diagnostics (namicediag) 5 !! 3 - Ice initialization (namiceini) 6 !! 4 - Ice discretization (namiceitd) 7 !! 5 - Ice dynamics and transport (namicedyn) 8 !! 6 - Ice diffusion (namicehdf) 9 !! 7 - Ice thermodynamics (namicethd) 10 !! 8 - Ice salinity (namicesal) 11 !! 9 - Ice mechanical redistribution (namiceitdme) 12 !!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 11 13 ! 12 14 !------------------------------------------------------------------------------ 13 15 &namicerun ! Generic parameters 14 16 !------------------------------------------------------------------------------ 15 jpl = 5 ! number of ice categories 16 nlay_i = 2 ! number of ice layers 17 nlay_s = 1 ! number of snow layers (only 1 is working) 18 cn_icerst_in = "restart_ice" ! suffix of ice restart name (input) 19 cn_icerst_indir = "." ! directory from which to read input ice restarts 20 cn_icerst_out = "restart_ice" ! suffix of ice restart name (output) 21 cn_icerst_outdir = "." ! directory in which to write output ice restarts 22 ln_limdyn = .true. ! ice dynamics (T) or thermodynamics only (F) 23 rn_amax_n = 0.999 ! maximum tolerated ice concentration NH 24 rn_amax_s = 0.999 ! maximum tolerated ice concentration SH 25 ln_limdiahsb = .false. ! check the heat and salt budgets (T) or not (F) 26 ln_limdiaout = .true. ! output the heat and salt budgets (T) or not (F) 27 ln_icectl = .false. ! ice points output for debug (T or F) 28 iiceprt = 10 ! i-index for debug 29 jiceprt = 10 ! j-index for debug 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 rn_amax_n = 0.997 ! maximum tolerated ice concentration NH 21 rn_amax_s = 0.997 ! maximum tolerated ice concentration SH 22 cn_icerst_in = "restart_ice" ! suffix of ice restart name (input) 23 cn_icerst_out = "restart_ice" ! suffix of ice restart name (output) 24 cn_icerst_indir = "." ! directory to read input ice restarts 25 cn_icerst_outdir = "." ! directory to write output ice restarts 26 ln_limthd = .true. ! ice thermo (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 27 ln_limdyn = .true. ! ice dynamics (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 28 nn_limdyn = 2 ! (ln_limdyn=T) switch for ice dynamics 29 ! 2: total 30 ! 1: advection only (no diffusion, no ridging/rafting) 31 ! 0: advection only (as 1 but with prescribed velocity, bypass rheology) 32 rn_uice = 0.00001 ! (nn_limdyn=0) ice u-velocity 33 rn_vice = -0.00001 ! (nn_limdyn=0) ice v-velocity 34 / 35 !------------------------------------------------------------------------------ 36 &namicediag ! Diagnostics 37 !------------------------------------------------------------------------------ 38 ln_limdiachk = .false. ! check online the heat, mass & salt budgets (T) or not (F) 39 ln_limdiahsb = .false. ! output the heat, mass & salt budgets (T) or not (F) 40 ln_limctl = .false. ! ice points output for debug (T or F) 41 iiceprt = 10 ! i-index for debug 42 jiceprt = 10 ! j-index for debug 30 43 / 31 44 !------------------------------------------------------------------------------ 32 45 &namiceini ! Ice initialization 33 46 !------------------------------------------------------------------------------ 34 ln_iceini = .true. ! activate ice initialization (T) or not (F) 35 rn_thres_sst = 2.0 ! maximum water temperature with initial ice (degC) 36 rn_hts_ini_n = 0.3 ! initial real snow thickness (m), North 37 rn_hts_ini_s = 0.3 ! " " South 38 rn_hti_ini_n = 3.0 ! initial real ice thickness (m), North 39 rn_hti_ini_s = 1.0 ! " " South 40 rn_ati_ini_n = 0.9 ! initial ice concentration (-), North 41 rn_ati_ini_s = 0.9 ! " " South 42 rn_smi_ini_n = 6.3 ! initial ice salinity (g/kg), North 43 rn_smi_ini_s = 6.3 ! " " South 44 rn_tmi_ini_n = 270. ! initial ice/snw temperature (K), North 45 rn_tmi_ini_s = 270. ! " " South 47 ! -- limistate -- ! 48 ln_limini = .true. ! activate ice initialization (T) or not (F) 49 ln_limini_file = .false. ! netcdf file provided for initialization (T) or not (F) 50 rn_thres_sst = 2.0 ! maximum water temperature with initial ice (degC) 51 rn_hts_ini_n = 0.3 ! initial real snow thickness (m), North 52 rn_hts_ini_s = 0.3 ! " " South 53 rn_hti_ini_n = 3.0 ! initial real ice thickness (m), North 54 rn_hti_ini_s = 1.0 ! " " South 55 rn_ati_ini_n = 0.9 ! initial ice concentration (-), North 56 rn_ati_ini_s = 0.9 ! " " South 57 rn_smi_ini_n = 6.3 ! initial ice salinity (g/kg), North 58 rn_smi_ini_s = 6.3 ! " " South 59 rn_tmi_ini_n = 270. ! initial ice/snw temperature (K), North 60 rn_tmi_ini_s = 270. ! " " South 46 61 / 47 62 !------------------------------------------------------------------------------ … … 56 71 &namicedyn ! Ice dynamics and transport 57 72 !------------------------------------------------------------------------------ 58 nn_icestr = 0 ! ice strength parameteriztaion 59 ! 0: Hibler_79 P = pstar*<h>*exp(-c_rhg*A) 60 ! 1: Rothrock_75 P = Cf*coeff*integral(wr.h^2) 61 ln_icestr_bvf = .false. ! ice strength function brine volume (T) or not (F) 62 rn_pe_rdg = 17.0 ! ridging work divided by pot. energy change in ridging, if nn_icestr = 1 63 rn_pstar = 2.0e+04 ! ice strength thickness parameter (N/m2), nn_icestr = 0 64 rn_crhg = 20.0 ! ice strength conc. parameter (-), nn_icestr = 0 65 rn_cio = 5.0e-03 ! ice-ocean drag coefficient (-) 66 rn_creepl = 1.0e-12 ! creep limit (s-1) 67 rn_ecc = 2.0 ! eccentricity of the elliptical yield curve 68 nn_nevp = 120 ! number of EVP subcycles 69 rn_relast = 0.333 ! ratio of elastic timescale to ice time step: Telast = dt_ice * rn_relast 70 ! advised value: 1/3 (rn_nevp=120) or 1/9 (rn_nevp=300) 71 nn_ahi0 = 2 ! horizontal diffusivity computation 72 ! 0: use rn_ahi0_ref 73 ! 1: use rn_ahi0_ref x mean grid cell length / ( 2deg mean grid cell length ) 74 ! 2: use rn_ahi0_ref x grid cell length / ( 2deg mean grid cell length ) 75 rn_ahi0_ref = 350.0 ! horizontal sea ice diffusivity (m2/s) 76 ! if nn_ahi0 > 0, rn_ahi0_ref is the reference value at a nominal 2 deg resolution 73 ! -- limtrp & limadv -- ! 74 nn_limadv = 0 ! choose the advection scheme (-1=Prather ; 0=Ultimate-Macho) 75 nn_limadv_ord = 5 ! choose the order of the advection scheme (if nn_limadv=0) 76 ! -- limitd_me -- ! 77 nn_icestr = 0 ! ice strength parameteriztaion 78 ! 0: Hibler_79 P = pstar*<h>*exp(-c_rhg*A) 79 ! 1: Rothrock_75 P = Cf*coeff*integral(wr.h^2) 80 rn_pe_rdg = 17.0 ! (nn_icestr=1) ridging work divided by pot. energy change in ridging 81 rn_pstar = 2.0e+04 ! (nn_icestr=0) ice strength thickness parameter (N/m2) 82 rn_crhg = 20.0 ! (nn_icestr=0) ice strength conc. parameter (-) 83 ln_icestr_bvf = .false. ! ice strength function brine volume (T) or not (F) 84 ! 85 ! -- limdyn & limrhg -- ! 86 rn_cio = 5.0e-03 ! ice-ocean drag coefficient (-) 87 rn_creepl = 1.0e-12 ! creep limit (s-1) 88 rn_ecc = 2.0 ! eccentricity of the elliptical yield curve 89 nn_nevp = 120 ! number of EVP subcycles 90 rn_relast = 0.333 ! ratio of elastic timescale to ice time step: Telast = dt_ice * rn_relast 91 ! advised value: 1/3 (rn_nevp=120) or 1/9 (rn_nevp=300) 92 ln_landfast = .false. ! landfast ice parameterization (T or F) 93 rn_gamma = 0.15 ! (ln_landfast=T) fraction of ocean depth that ice must reach to initiate landfast 94 ! recommended range: [0.1 ; 0.25] 95 rn_icebfr = 10. ! (ln_landfast=T) maximum bottom stress per unit area of contact (N/m2) 96 ! a very large value ensures ice velocity=0 even with a small contact area 97 ! recommended range: ?? (should be greater than atm-ice stress => >0.1 N/m2) 98 rn_lfrelax = 1.e-5 ! (ln_landfast=T) relaxation time scale to reach static friction (s-1) 77 99 / 78 100 !------------------------------------------------------------------------------ 79 101 &namicehdf ! Ice horizontal diffusion 80 102 !------------------------------------------------------------------------------ 81 nn_convfrq = 5 ! convergence check frequency of the Crant-Nicholson scheme (perf. optimization) 103 ! -- limhdf -- ! 104 nn_ahi0 = -1 ! horizontal diffusivity computation 105 ! -1: no diffusion (bypass limhdf) 106 ! 0: use rn_ahi0_ref 107 ! 1: use rn_ahi0_ref x mean grid cell length / ( 2deg mean grid cell length ) 108 ! 2: use rn_ahi0_ref x grid cell length / ( 2deg mean grid cell length ) 109 rn_ahi0_ref = 350.0 ! horizontal sea ice diffusivity (m2/s) 110 ! if nn_ahi0 > 0, rn_ahi0_ref is the reference value at a nominal 2 deg resolution 82 111 / 83 112 !------------------------------------------------------------------------------ 84 113 &namicethd ! Ice thermodynamics 85 114 !------------------------------------------------------------------------------ 86 rn_hnewice = 0.1 ! thickness for new ice formation in open water (m) 87 ln_frazil = .false. ! use frazil ice collection thickness as a function of wind (T) or not (F) 88 rn_maxfrazb = 1.0 ! maximum fraction of frazil ice collecting at the ice base 89 rn_vfrazb = 0.417 ! thresold drift speed for frazil ice collecting at the ice bottom (m/s) 90 rn_Cfrazb = 5.0 ! squeezing coefficient for frazil ice collecting at the ice bottom 91 rn_himin = 0.10 ! minimum ice thickness (m) used in remapping, must be smaller than rn_hnewice 92 rn_betas = 0.66 ! exponent in lead-ice repratition of snow precipitation 93 ! betas = 1 -> equipartition, betas < 1 -> more on leads 94 rn_kappa_i = 1.0 ! radiation attenuation coefficient in sea ice (m-1) 95 nn_conv_dif = 50 ! maximal number of iterations for heat diffusion computation 96 rn_terr_dif = 0.0001 ! maximum temperature after heat diffusion (degC) 97 nn_ice_thcon= 1 ! sea ice thermal conductivity 98 ! 0: k = k0 + beta.S/T (Untersteiner, 1964) 99 ! 1: k = k0 + beta1.S/T - beta2.T (Pringle et al., 2007) 100 nn_monocat = 0 ! virtual ITD mono-category parameterizations (1, jpl = 1 only) or not (0) 101 ! 2: simple piling instead of ridging --- temporary option 102 ! 3: activate G(he) only --- temporary option 103 ! 4: activate lateral melting only --- temporary option 104 ln_it_qnsice = .true. ! iterate the surface non-solar flux with surface temperature (T) or not (F) 115 ! -- limthd_dif -- ! 116 rn_kappa_i = 1.0 ! radiation attenuation coefficient in sea ice (m-1) 117 nn_conv_dif = 50 ! maximal number of iterations for heat diffusion computation 118 rn_terr_dif = 1.0e-04 ! maximum temperature after heat diffusion (degC) 119 nn_ice_thcon = 1 ! sea ice thermal conductivity 120 ! 0: k = k0 + beta.S/T (Untersteiner, 1964) 121 ! 1: k = k0 + beta1.S/T - beta2.T (Pringle et al., 2007) 122 ln_it_qnsice = .true. ! iterate the surface non-solar flux with surface temperature (T) or not (F) 123 nn_monocat = 0 ! virtual ITD mono-category parameterizations (1, jpl = 1 only) or not (0) 124 ! 2: simple piling instead of ridging --- temporary option 125 ! 3: activate G(he) only --- temporary option 126 ! 4: activate extra lateral melting only --- temporary option 127 ! -- limthd_dh -- ! 128 ln_limdH = .true. ! activate ice thickness change from growing/melting (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 129 rn_betas = 0.66 ! exponent in lead-ice repratition of snow precipitation 130 ! betas = 1 -> equipartition, betas < 1 -> more on leads 131 ! -- limthd_da -- ! 132 ln_limdA = .true. ! activate lateral melting param. (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 133 rn_beta = 1.0 ! (ln_latmelt=T) coef. beta for lateral melting param. Recommended range=[0.8-1.2] 134 ! => decrease = more melt and melt peaks toward higher concentration (A~0.5 for beta=1 ; A~0.8 for beta=0.2) 135 ! 0.3 = best fit for western Fram Strait and Antarctica 136 ! 1.4 = best fit for eastern Fram Strait 137 rn_dmin = 8. ! (ln_latmelt=T) minimum floe diameter for lateral melting param. Recommended range=[6-10] 138 ! => 6 vs 8m = +40% melting at the peak (A~0.5) 139 ! 10 vs 8m = -20% melting 140 ! -- limthd_lac -- ! 141 ln_limdO = .true. ! activate ice growth in open-water (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 142 rn_hnewice = 0.1 ! thickness for new ice formation in open water (m) 143 ln_frazil = .false. ! Frazil ice parameterization (ice collection as a function of wind) 144 rn_maxfrazb = 1.0 ! (ln_frazil=T) maximum fraction of frazil ice collecting at the ice base 145 rn_vfrazb = 0.417 ! (ln_frazil=T) thresold drift speed for frazil ice collecting at the ice bottom (m/s) 146 rn_Cfrazb = 5.0 ! (ln_frazil=T) squeezing coefficient for frazil ice collecting at the ice bottom 147 ! -- limitd_th -- ! 148 rn_himin = 0.1 ! minimum ice thickness (m) used in remapping, must be smaller than rn_hnewice 105 149 / 106 150 !------------------------------------------------------------------------------ 107 151 &namicesal ! Ice salinity 108 152 !------------------------------------------------------------------------------ 109 nn_icesal = 2 ! ice salinity option 110 ! 1: constant ice salinity (S=rn_icesal) 111 ! 2: varying salinity parameterization S(z,t) 112 ! 3: prescribed salinity profile S(z), Schwarzacher, 1959 113 rn_icesal = 4. ! ice salinity (g/kg, nn_icesal = 1 only) 114 rn_sal_gd = 5. ! restoring ice salinity, gravity drainage (g/kg) 115 rn_time_gd = 1.73e+6 ! restoring time scale, gravity drainage (s) 116 rn_sal_fl = 2. ! restoring ice salinity, flushing (g/kg) 117 rn_time_fl = 8.64e+5 ! restoring time scale, flushing (s) 118 rn_simax = 20. ! maximum tolerated ice salinity (g/kg) 119 rn_simin = 0.1 ! minimum tolerated ice salinity (g/kg) 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) 120 166 / 121 167 !------------------------------------------------------------------------------ 122 168 &namiceitdme ! Ice mechanical redistribution (ridging and rafting) 123 169 !------------------------------------------------------------------------------ 124 rn_Cs = 0.5 ! fraction of shearing energy contributing to ridging 125 rn_fsnowrdg = 0.5 ! snow volume fraction that survives in ridging 126 rn_fsnowrft = 0.5 ! snow volume fraction that survives in rafting 127 nn_partfun = 1 ! type of ridging participation function 128 ! 0: linear (Thorndike et al, 1975) 129 ! 1: exponential (Lipscomb, 2007 130 rn_gstar = 0.15 ! fractional area of thin ice being ridged (nn_partfun = 0) 131 rn_astar = 0.05 ! exponential measure of ridging ice fraction (nn_partfun = 1) 132 rn_hstar = 100.0 ! determines the maximum thickness of ridged ice (m) (Hibler, 1980) 133 ln_rafting = .true. ! rafting activated (T) or not (F) 134 rn_hraft = 0.75 ! threshold thickness for rafting (m) 135 rn_craft = 5.0 ! squeezing coefficient used in the rafting function 136 rn_por_rdg = 0.3 ! porosity of newly ridged ice (Lepparanta et al., 1995) 170 ! -- limitd_me -- ! 171 rn_cs = 0.5 ! fraction of shearing energy contributing to ridging 172 nn_partfun = 1 ! type of ridging participation function 173 ! 0: linear (Thorndike et al, 1975) 174 ! 1: exponential (Lipscomb, 2007) 175 rn_gstar = 0.15 ! (nn_partfun = 0) fractional area of thin ice being ridged 176 rn_astar = 0.05 ! (nn_partfun = 1) exponential measure of ridging ice fraction 177 ln_ridging = .true. ! ridging activated (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 178 rn_hstar = 100.0 ! (ln_ridging = T) determines the maximum thickness of ridged ice (m) (Hibler, 1980) 179 rn_por_rdg = 0.3 ! (ln_ridging = T) porosity of newly ridged ice (Lepparanta et al., 1995) 180 rn_fsnowrdg = 0.5 ! (ln_ridging = T) snow volume fraction that survives in ridging 181 ln_rafting = .true. ! rafting activated (T) or not (F) => DO NOT TOUCH UNLESS U KNOW WHAT U DO 182 rn_hraft = 0.75 ! (ln_rafting = T) threshold thickness for rafting (m) 183 rn_craft = 5.0 ! (ln_rafting = T) squeezing coefficient used in the rafting function 184 rn_fsnowrft = 0.5 ! (ln_rafting = T) snow volume fraction that survives in rafting 137 185 /
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