| 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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| 16 | cn_icerst_in = "restart_ice" ! suffix of ice restart name (input) |
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| 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 | cai = 1.40e-3 ! atmospheric drag over sea ice (clio) |
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| 21 | cao = 1.00e-3 ! atmospheric drag over ocean (clio) |
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| 22 | ln_nicep = .false. ! Ice points output for debug (yes or no) |
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| 23 | ln_limdiahsb = .false. ! check the heat and salt budgets (T) or not (F) |
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| 24 | ln_limdiaout = .true. ! output the heat and salt budgets (T) or not (F) |
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| 25 | / |
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| 26 | !----------------------------------------------------------------------- |
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| 27 | &namiceini ! ice initialisation |
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| 28 | !----------------------------------------------------------------------- |
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| 29 | ln_limini = .true. ! activate ice initialization (T) or not (F) |
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| 30 | thres_sst = 2.0 ! threshold water temperature for initial sea ice |
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| 31 | hts_ini_n = 0.3 ! initial snow thickness in the north |
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| 32 | hts_ini_s = 0.1 ! " " south |
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| 33 | hti_ini_n = 3.50 ! initial ice thickness in the north |
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| 34 | hti_ini_s = 1.0 ! " " south |
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| 35 | ati_ini_n = 0.95 ! initial ice concentration in the north |
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| 36 | ati_ini_s = 0.9 ! " " south |
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| 37 | smi_ini_n = 6.301 ! initial ice salinity in the north |
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| 38 | smi_ini_s = 6.301 ! " " south |
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| 39 | tmi_ini_n = 270. ! initial ice/snw temp in the north |
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| 40 | tmi_ini_s = 270. ! initial ice/snw temp in the south |
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| 41 | / |
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| 42 | !----------------------------------------------------------------------- |
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| 43 | &namicedyn ! ice dynamic |
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| 44 | !----------------------------------------------------------------------- |
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| 45 | epsd = 1.0e-20 ! tolerance parameter |
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| 46 | alpha = 0.5 ! coefficient for semi-implicit coriolis |
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| 47 | dm = 0.6e+03 ! diffusion constant for dynamics |
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| 48 | nbiter = 1 ! number of sub-time steps for relaxation |
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| 49 | nbitdr = 500 ! maximum number of iterations for relaxation |
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| 50 | om = 0.5 ! relaxation constant |
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| 51 | resl = 5.0e-05 ! maximum value for the residual of relaxation |
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| 52 | cw = 5.0e-03 ! drag coefficient for oceanic stress |
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| 53 | angvg = 0.0 ! turning angle for oceanic stress |
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| 54 | pstar = 2.0e+04 ! 1st bulk-rheology parameter |
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| 55 | c_rhg = 20.0 ! 2nd bulk-rhelogy parameter |
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| 56 | etamn = 0.0e+07 ! minimun value for viscosity |
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| 57 | creepl = 1.0e-12 ! creep limit |
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| 58 | ecc = 2.0 ! eccentricity of the elliptical yield curve |
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| 59 | ahi0 = 350.e0 ! horizontal eddy diffusivity coefficient for sea-ice [m2/s] |
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| 60 | nevp = 300 ! number of iterations for subcycling in EVP, SB, 400 |
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| 61 | telast =9600.0 ! timescale for elastic waves, SB, 720.0 |
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| 62 | alphaevp = 1.0 ! coefficient for the solution of internal ice stresses |
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| 63 | hminrhg = 0.001 ! ice volume (a*h in m) below which ice velocity equal ocean velocity |
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| 64 | / |
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| 65 | !----------------------------------------------------------------------- |
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| 66 | &namicetrp ! ice transport |
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| 67 | !----------------------------------------------------------------------- |
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| 68 | bound = 0. ! boundary conditions (=0.0 no-slip, =1.0 free-slip) |
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| 69 | / |
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| 70 | !----------------------------------------------------------------------- |
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| 71 | &namicethd ! ice thermodynamic |
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| 72 | !----------------------------------------------------------------------- |
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| 73 | hmelt = -0.15 ! maximum melting at the bottom |
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| 74 | hiccrit = 0.1 , 0.1 ! ice thickness for lateral accretion in the Northern (Southern) Hemisphere |
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| 75 | ! caution 1.0, 1.0 best value to be used!!! (gilles G.) ???? |
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| 76 | fraz_swi = 0.0 ! use of frazil ice collection thickness in function of wind (1.0) or not (0.0) |
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| 77 | maxfrazb = 0.0 ! maximum portion of frazil ice collecting at the ice bottom |
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| 78 | vfrazb = 0.4166667 ! thresold drift speed for frazil ice collecting at the ice bottom |
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| 79 | Cfrazb = 5.0 ! squeezing coefficient for frazil ice collecting at the ice bottom |
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| 80 | hicmin = 0.2 ! ice thickness corr. to max. energy stored in brine pocket |
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| 81 | hiclim = 0.10 ! minimum ice thickness |
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| 82 | sbeta = 1. ! numerical caracteritic of the scheme for diffusion in ice |
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| 83 | ! Cranck-Nicholson (=0.5), implicit (=1), explicit (=0) |
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| 84 | parlat = 0.0 ! percentage of energy used for lateral ablation |
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| 85 | hakspl = 0.25 ! slope of distr. for Hakkinen-Mellor's lateral melting |
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| 86 | hibspl = 0.5 ! slope of distribution for Hibler's lateral melting |
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| 87 | exld = 2.0 ! exponent for leads-closure rate |
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| 88 | hakdif = 1.0 ! coefficient for diffusions of ice and snow |
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| 89 | thth = 0.2 ! threshold thickness for comp. of eq. thermal conductivity |
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| 90 | hnzst = 0.1 ! thickness of the surf. layer in temp. computation |
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| 91 | parsub = 1.0 ! switch for snow sublimation or not |
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| 92 | alphs = 1.0 ! coefficient for snow density when snow ice formation |
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| 93 | betas = 0.6 ! exponent in lead-ice fractionation of snow precipitation 0.66 |
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| 94 | ! betas = 1 -> equipartition, betas < 1 -> more on leads |
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| 95 | kappa_i = 1.0 ! extinction radiation parameter in sea ice (1.0) |
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| 96 | nconv_i_thd = 50 ! maximal number of iterations for heat diffusion computation |
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| 97 | maxer_i_thd = 0.0001 ! maximal error in temperature for heat diffusion computation |
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| 98 | thcon_i_swi = 1 ! switch for computation of thermal conductivity in the ice |
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| 99 | ! (0) Untersteiner (1964), (1) Pringle et al. (2007) |
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| 100 | / |
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| 101 | !----------------------------------------------------------------------- |
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| 102 | &namicesal ! ice salinity |
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| 103 | !----------------------------------------------------------------------- |
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| 104 | num_sal = 2 ! salinity option: 1 -> S = bulk_sal |
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| 105 | ! 2 -> S = S(z,t) with a simple parameterization |
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| 106 | ! 3 -> S = S(z) profile of Scwharzacher [1959] |
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| 107 | ! 4 -> S = S(h) Cox and Weeks [1974] |
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| 108 | bulk_sal = 4.0 ! if 1 is used, it represents the ice salinity |
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| 109 | sal_G = 5.00 ! restoring salinity for GD |
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| 110 | time_G = 1.728e+6 ! restoring time for GD |
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| 111 | sal_F = 2.00 ! restoring salinity for flushing |
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| 112 | time_F = 8.640e+5 ! restoring time for flushing |
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| 113 | s_i_max = 20.0 ! Maximum salinity |
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| 114 | s_i_min = 0.1 ! Minimum tolerated ice salinity |
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| 115 | s_i_0 = 3.5 ! 1st salinity for salinity profile |
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| 116 | s_i_1 = 4.5 ! 2nd salinity for salinity profile |
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| 117 | / |
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| 118 | !----------------------------------------------------------------------- |
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| 119 | &namiceitdme ! parameters for mechanical redistribution of ice |
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| 120 | !----------------------------------------------------------------------- |
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| 121 | ridge_scheme_swi = 0 ! which ridging scheme using (1=Rothrock,else=Hibler79) |
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| 122 | Cs = 0.50 ! shearing energy contribution to ridging |
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| 123 | Cf = 17.0 ! ratio of ridging work to PE change in ridging |
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| 124 | fsnowrdg = 0.5 ! snow fraction that survives in ridging |
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| 125 | fsnowrft = 0.5 ! snow fraction that survives in rafting |
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| 126 | Gstar = 0.15 ! fractional area of thin ice being ridged |
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| 127 | astar = 0.05 ! equivalent of gstar (0.05 for TH75 and 0.03 for weaker ice) |
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| 128 | Hstar = 100.0 ! parameter determining the maximum thickness of ridged ice |
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| 129 | raftswi = 1 ! rafting or not |
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| 130 | hparmeter = 0.75 ! threshold thickness for rafting or not |
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| 131 | Craft = 5.0 ! coefficient used in the rafting function |
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| 132 | ridge_por = 0.3 ! initial porosity of the ridged ice (typically 0.30) |
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| 133 | sal_max_ridge = 15.0 ! maximum ridged ice salinity |
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| 134 | partfun_swi = 1 ! participation function linear, TH75 (0) or exponential Letal07 (1) |
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| 135 | transfun_swi = 0 ! transfer function uniform of H80 (0) or exponential Letal07 (1) |
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| 136 | brinstren_swi = 0 ! (1) use brine volume to diminish ice strength |
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| 137 | / |
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| 138 | !----------------------------------------------------------------------- |
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| 139 | &namicedia ! ice diagnostics |
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| 140 | !----------------------------------------------------------------------- |
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| 141 | fmtinf ='1PE13.5 ' ! format of the output values |
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| 142 | nfrinf = 4 ! number of variables written in one line |
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| 143 | ntmoy = 1 ! instantaneous values of ice evolution or averaging |
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| 144 | ninfo = 1 ! frequency of ouputs on file ice_evolu in case of averaging |
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| 145 | / |
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| 146 | !!----------------------------------------------------------------------- |
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| 147 | !&namicehsb ! Heat and salt budgets |
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| 148 | !!----------------------------------------------------------------------- |
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| 149 | !/ |
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| 150 | |
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