| [3875] | 1 | !!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 2 | !! NEMO/LIM3 : 1 - dynamics/advection/thermo (namicerun) |
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| 3 | !! namelists 2 - ice intialisation (namiceini) |
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| 4 | !! 3 - ice dynamic (namicedyn) |
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| 5 | !! 4 - ice advection (namicetrp) |
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| 6 | !! 5 - thermodynamic (namicethd) |
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| 7 | !! 6 - ice salinity (namicesal) |
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| 8 | !! 7 - mechanical redistribution of ice (namiceitdme) |
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| 9 | !! 8 - ice diagnostics (namicedia) |
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| 10 | !! 9 - ice outputs (namiceout) |
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| 11 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
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| 12 | |
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| 13 | !----------------------------------------------------------------------- |
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| 14 | &namicerun ! Share parameters for dynamics/advection/thermo |
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| 15 | !----------------------------------------------------------------------- |
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| [4161] | 16 | cn_icerst_in = "restart_ice" ! suffix of ice restart name (input) |
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| [4690] | 17 | cn_icerst_out = "restart_ice" ! suffix of ice restart name (output) |
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| 18 | ln_limdyn = .true. ! ice dynamics (T) or thermodynamics only (F) |
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| 19 | amax = 0.999 ! maximum ice concentration |
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| 20 | ln_nicep = .false. ! Ice points output for debug (yes or no) |
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| 21 | ln_limdiahsb = .false. ! check the heat and salt budgets (T) or not (F) |
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| 22 | ln_limdiaout = .true. ! output the heat and salt budgets (T) or not (F) |
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| [3875] | 23 | / |
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| 24 | !----------------------------------------------------------------------- |
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| 25 | &namiceini ! ice initialisation |
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| 26 | !----------------------------------------------------------------------- |
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| [4690] | 27 | ln_limini = .false. ! activate ice initialization (T) or not (F) |
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| 28 | thres_sst = 0.0 ! threshold water temperature for initial sea ice |
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| 29 | hts_ini_n = 0.3 ! initial snow thickness in the north |
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| 30 | hts_ini_s = 0.3 ! " " south |
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| [5046] | 31 | hti_ini_n = 3.0 ! initial ice thickness in the north |
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| [4690] | 32 | hti_ini_s = 1.0 ! " " south |
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| 33 | ati_ini_n = 0.9 ! initial ice concentration in the north |
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| 34 | ati_ini_s = 0.9 ! " " south |
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| [5046] | 35 | smi_ini_n = 6.3 ! initial ice salinity in the north |
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| 36 | smi_ini_s = 6.3 ! " " south |
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| [4690] | 37 | tmi_ini_n = 270. ! initial ice/snw temp in the north |
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| 38 | tmi_ini_s = 270. ! initial ice/snw temp in the south |
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| [3875] | 39 | / |
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| 40 | !----------------------------------------------------------------------- |
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| 41 | &namicedyn ! ice dynamic |
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| 42 | !----------------------------------------------------------------------- |
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| 43 | cw = 5.0e-03 ! drag coefficient for oceanic stress |
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| [4205] | 44 | pstar = 2.0e+04 ! 1st bulk-rheology parameter |
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| [3875] | 45 | c_rhg = 20.0 ! 2nd bulk-rhelogy parameter |
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| 46 | creepl = 1.0e-12 ! creep limit |
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| 47 | ecc = 2.0 ! eccentricity of the elliptical yield curve |
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| [5046] | 48 | ahi0 = 350.e0 ! horizontal eddy diffusivity coefficient for sea-ice [m2/s] ! depends on resolution |
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| [4864] | 49 | nevp = 120 ! number of iterations for subcycling in EVP |
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| 50 | relast = 0.333 ! ratio of elastic timescale over ice time step (1/3 if nevp=120 ; 1/9 if nevp=300) |
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| [4205] | 51 | hminrhg = 0.001 ! ice volume (a*h in m) below which ice velocity equal ocean velocity |
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| [3875] | 52 | / |
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| 53 | !----------------------------------------------------------------------- |
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| 54 | &namicethd ! ice thermodynamic |
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| 55 | !----------------------------------------------------------------------- |
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| [4690] | 56 | hiccrit = 0.1 ! ice thickness for lateral accretion |
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| [3875] | 57 | ! caution 1.0, 1.0 best value to be used!!! (gilles G.) ???? |
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| [4690] | 58 | fraz_swi = 0 ! use of frazil ice collection thickness in function of wind (1.0) or not (0.0) |
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| [3875] | 59 | maxfrazb = 0.0 ! maximum portion of frazil ice collecting at the ice bottom |
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| 60 | vfrazb = 0.4166667 ! thresold drift speed for frazil ice collecting at the ice bottom |
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| 61 | Cfrazb = 5.0 ! squeezing coefficient for frazil ice collecting at the ice bottom |
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| [5046] | 62 | hiclim = 0.10 ! minimum thickness of the first thickness category, must be smaller than hiccrit |
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| [3875] | 63 | betas = 0.6 ! exponent in lead-ice fractionation of snow precipitation 0.66 |
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| 64 | ! betas = 1 -> equipartition, betas < 1 -> more on leads |
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| 65 | kappa_i = 1.0 ! extinction radiation parameter in sea ice (1.0) |
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| 66 | nconv_i_thd = 50 ! maximal number of iterations for heat diffusion computation |
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| 67 | maxer_i_thd = 0.0001 ! maximal error in temperature for heat diffusion computation |
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| 68 | thcon_i_swi = 1 ! switch for computation of thermal conductivity in the ice |
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| 69 | ! (0) Untersteiner (1964), (1) Pringle et al. (2007) |
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| 70 | / |
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| 71 | !----------------------------------------------------------------------- |
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| 72 | &namicesal ! ice salinity |
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| 73 | !----------------------------------------------------------------------- |
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| 74 | num_sal = 2 ! salinity option: 1 -> S = bulk_sal |
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| 75 | ! 2 -> S = S(z,t) with a simple parameterization |
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| 76 | ! 3 -> S = S(z) profile of Scwharzacher [1959] |
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| 77 | ! 4 -> S = S(h) Cox and Weeks [1974] |
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| 78 | bulk_sal = 4.0 ! if 1 is used, it represents the ice salinity |
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| 79 | sal_G = 5.00 ! restoring salinity for GD |
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| 80 | time_G = 1.728e+6 ! restoring time for GD |
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| 81 | sal_F = 2.00 ! restoring salinity for flushing |
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| 82 | time_F = 8.640e+5 ! restoring time for flushing |
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| 83 | s_i_max = 20.0 ! Maximum salinity |
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| 84 | s_i_min = 0.1 ! Minimum tolerated ice salinity |
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| 85 | / |
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| 86 | !----------------------------------------------------------------------- |
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| 87 | &namiceitdme ! parameters for mechanical redistribution of ice |
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| 88 | !----------------------------------------------------------------------- |
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| 89 | ridge_scheme_swi = 0 ! which ridging scheme using (1=Rothrock,else=Hibler79) |
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| 90 | Cs = 0.50 ! shearing energy contribution to ridging |
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| 91 | Cf = 17.0 ! ratio of ridging work to PE change in ridging |
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| 92 | fsnowrdg = 0.5 ! snow fraction that survives in ridging |
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| 93 | fsnowrft = 0.5 ! snow fraction that survives in rafting |
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| 94 | Gstar = 0.15 ! fractional area of thin ice being ridged |
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| 95 | astar = 0.05 ! equivalent of gstar (0.05 for TH75 and 0.03 for weaker ice) |
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| 96 | Hstar = 100.0 ! parameter determining the maximum thickness of ridged ice |
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| [4690] | 97 | raft_swi = 1 ! rafting or not |
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| [3875] | 98 | hparmeter = 0.75 ! threshold thickness for rafting or not |
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| 99 | Craft = 5.0 ! coefficient used in the rafting function |
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| 100 | ridge_por = 0.3 ! initial porosity of the ridged ice (typically 0.30) |
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| 101 | partfun_swi = 1 ! participation function linear, TH75 (0) or exponential Letal07 (1) |
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| 102 | brinstren_swi = 0 ! (1) use brine volume to diminish ice strength |
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