| 1 | !!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
|---|
| 2 | !! NEMO/LIM3 : 1 - dynamics/advection/thermo (namicerun) |
|---|
| 3 | !! namelists 2 - ice intialisation (namiceini) |
|---|
| 4 | !! 3 - ice dynamic (namicedyn) |
|---|
| 5 | !! 4 - ice advection (namicetrp) |
|---|
| 6 | !! 5 - thermodynamic (namicethd) |
|---|
| 7 | !! 6 - ice salinity (namicesal) |
|---|
| 8 | !! 7 - mechanical redistribution of ice (namiceitdme) |
|---|
| 9 | !! 8 - ice diagnostics (namicedia) |
|---|
| 10 | !! 9 - ice outputs (namiceout) |
|---|
| 11 | !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
|---|
| 12 | |
|---|
| 13 | !----------------------------------------------------------------------- |
|---|
| 14 | &namicerun ! Share parameters for dynamics/advection/thermo |
|---|
| 15 | !----------------------------------------------------------------------- |
|---|
| 16 | cn_icerst_in = "restart_ice" ! suffix of ice restart name (input) |
|---|
| 17 | cn_icerst_out = "restart_ice" ! suffix of ice restart name (output) |
|---|
| 18 | ln_limdyn = .true. ! ice dynamics (T) or thermodynamics only (F) |
|---|
| 19 | amax = 0.999 ! maximum ice concentration |
|---|
| 20 | cai = 1.40e-3 ! atmospheric drag over sea ice |
|---|
| 21 | cao = 1.00e-3 ! atmospheric drag over ocean |
|---|
| 22 | ln_nicep = .false. ! Ice points output for debug (yes or no) |
|---|
| 23 | ln_limdiahsb = .false. ! check the heat and salt budgets (T) or not (F) |
|---|
| 24 | ln_limdiaout = .false. ! output the heat and salt budgets (T) or not (F) |
|---|
| 25 | / |
|---|
| 26 | !----------------------------------------------------------------------- |
|---|
| 27 | &namiceini ! ice initialisation |
|---|
| 28 | !----------------------------------------------------------------------- |
|---|
| 29 | ttest = 2.0 ! threshold water temperature for initial sea ice |
|---|
| 30 | hninn = 0.3 ! initial snow thickness in the north |
|---|
| 31 | hnins = 0.1 ! " " south |
|---|
| 32 | hginn = 3.50 ! initial undeformed ice thickness in the north |
|---|
| 33 | hgins = 1.0 ! " " " south |
|---|
| 34 | aginn = 0.95 ! initial undeformed ice concentration in the north |
|---|
| 35 | agins = 0.9 ! " " " south |
|---|
| 36 | sinn = 6.301 ! initial salinity in the north |
|---|
| 37 | sins = 6.301 ! " " south |
|---|
| 38 | / |
|---|
| 39 | !----------------------------------------------------------------------- |
|---|
| 40 | &namicedyn ! ice dynamic |
|---|
| 41 | !----------------------------------------------------------------------- |
|---|
| 42 | epsd = 1.0e-20 ! tolerance parameter |
|---|
| 43 | alpha = 0.5 ! coefficient for semi-implicit coriolis |
|---|
| 44 | dm = 0.6e+03 ! diffusion constant for dynamics |
|---|
| 45 | nbiter = 1 ! number of sub-time steps for relaxation |
|---|
| 46 | nbitdr = 500 ! maximum number of iterations for relaxation |
|---|
| 47 | om = 0.5 ! relaxation constant |
|---|
| 48 | resl = 5.0e-05 ! maximum value for the residual of relaxation |
|---|
| 49 | cw = 5.0e-03 ! drag coefficient for oceanic stress |
|---|
| 50 | angvg = 0.0 ! turning angle for oceanic stress |
|---|
| 51 | pstar = 2.0e+04 ! 1st bulk-rheology parameter |
|---|
| 52 | c_rhg = 20.0 ! 2nd bulk-rhelogy parameter |
|---|
| 53 | etamn = 0.0e+07 ! minimun value for viscosity |
|---|
| 54 | creepl = 1.0e-12 ! creep limit |
|---|
| 55 | ecc = 2.0 ! eccentricity of the elliptical yield curve |
|---|
| 56 | ahi0 = 350.e0 ! horizontal eddy diffusivity coefficient for sea-ice [m2/s] |
|---|
| 57 | nevp = 300 ! number of iterations for subcycling in EVP, SB, 400 |
|---|
| 58 | telast =9600.0 ! timescale for elastic waves, SB, 720.0 |
|---|
| 59 | alphaevp = 1.0 ! coefficient for the solution of internal ice stresses |
|---|
| 60 | hminrhg = 0.001 ! ice volume (a*h in m) below which ice velocity equal ocean velocity |
|---|
| 61 | / |
|---|
| 62 | !----------------------------------------------------------------------- |
|---|
| 63 | &namicetrp ! ice transport |
|---|
| 64 | !----------------------------------------------------------------------- |
|---|
| 65 | bound = 0. ! boundary conditions (=0.0 no-slip, =1.0 free-slip) |
|---|
| 66 | / |
|---|
| 67 | !----------------------------------------------------------------------- |
|---|
| 68 | &namicethd ! ice thermodynamic |
|---|
| 69 | !----------------------------------------------------------------------- |
|---|
| 70 | hmelt = -0.15 ! maximum melting at the bottom |
|---|
| 71 | hiccrit = 0.1 , 0.1 ! ice thickness for lateral accretion in the Northern (Southern) Hemisphere |
|---|
| 72 | ! caution 1.0, 1.0 best value to be used!!! (gilles G.) ???? |
|---|
| 73 | fraz_swi = 0.0 ! use of frazil ice collection thickness in function of wind (1.0) or not (0.0) |
|---|
| 74 | maxfrazb = 0.0 ! maximum portion of frazil ice collecting at the ice bottom |
|---|
| 75 | vfrazb = 0.4166667 ! thresold drift speed for frazil ice collecting at the ice bottom |
|---|
| 76 | Cfrazb = 5.0 ! squeezing coefficient for frazil ice collecting at the ice bottom |
|---|
| 77 | hicmin = 0.2 ! ice thickness corr. to max. energy stored in brine pocket |
|---|
| 78 | hiclim = 0.10 ! minimum ice thickness |
|---|
| 79 | sbeta = 1. ! numerical caracteritic of the scheme for diffusion in ice |
|---|
| 80 | ! Cranck-Nicholson (=0.5), implicit (=1), explicit (=0) |
|---|
| 81 | parlat = 0.0 ! percentage of energy used for lateral ablation |
|---|
| 82 | hakspl = 0.25 ! slope of distr. for Hakkinen-Mellor's lateral melting |
|---|
| 83 | hibspl = 0.5 ! slope of distribution for Hibler's lateral melting |
|---|
| 84 | exld = 2.0 ! exponent for leads-closure rate |
|---|
| 85 | hakdif = 1.0 ! coefficient for diffusions of ice and snow |
|---|
| 86 | thth = 0.2 ! threshold thickness for comp. of eq. thermal conductivity |
|---|
| 87 | hnzst = 0.1 ! thickness of the surf. layer in temp. computation |
|---|
| 88 | parsub = 1.0 ! switch for snow sublimation or not |
|---|
| 89 | alphs = 1.0 ! coefficient for snow density when snow ice formation |
|---|
| 90 | betas = 0.6 ! exponent in lead-ice fractionation of snow precipitation 0.66 |
|---|
| 91 | ! betas = 1 -> equipartition, betas < 1 -> more on leads |
|---|
| 92 | kappa_i = 1.0 ! extinction radiation parameter in sea ice (1.0) |
|---|
| 93 | nconv_i_thd = 50 ! maximal number of iterations for heat diffusion computation |
|---|
| 94 | maxer_i_thd = 0.0001 ! maximal error in temperature for heat diffusion computation |
|---|
| 95 | thcon_i_swi = 1 ! switch for computation of thermal conductivity in the ice |
|---|
| 96 | ! (0) Untersteiner (1964), (1) Pringle et al. (2007) |
|---|
| 97 | / |
|---|
| 98 | !----------------------------------------------------------------------- |
|---|
| 99 | &namicesal ! ice salinity |
|---|
| 100 | !----------------------------------------------------------------------- |
|---|
| 101 | num_sal = 2 ! salinity option: 1 -> S = bulk_sal |
|---|
| 102 | ! 2 -> S = S(z,t) with a simple parameterization |
|---|
| 103 | ! 3 -> S = S(z) profile of Scwharzacher [1959] |
|---|
| 104 | ! 4 -> S = S(h) Cox and Weeks [1974] |
|---|
| 105 | bulk_sal = 4.0 ! if 1 is used, it represents the ice salinity |
|---|
| 106 | sal_G = 5.00 ! restoring salinity for GD |
|---|
| 107 | time_G = 1.728e+6 ! restoring time for GD |
|---|
| 108 | sal_F = 2.00 ! restoring salinity for flushing |
|---|
| 109 | time_F = 8.640e+5 ! restoring time for flushing |
|---|
| 110 | s_i_max = 20.0 ! Maximum salinity |
|---|
| 111 | s_i_min = 0.1 ! Minimum tolerated ice salinity |
|---|
| 112 | s_i_0 = 3.5 ! 1st salinity for salinity profile |
|---|
| 113 | s_i_1 = 4.5 ! 2nd salinity for salinity profile |
|---|
| 114 | / |
|---|
| 115 | !----------------------------------------------------------------------- |
|---|
| 116 | &namiceitdme ! parameters for mechanical redistribution of ice |
|---|
| 117 | !----------------------------------------------------------------------- |
|---|
| 118 | ridge_scheme_swi = 0 ! which ridging scheme using (1=Rothrock,else=Hibler79) |
|---|
| 119 | Cs = 0.50 ! shearing energy contribution to ridging |
|---|
| 120 | Cf = 17.0 ! ratio of ridging work to PE change in ridging |
|---|
| 121 | fsnowrdg = 0.5 ! snow fraction that survives in ridging |
|---|
| 122 | fsnowrft = 0.5 ! snow fraction that survives in rafting |
|---|
| 123 | Gstar = 0.15 ! fractional area of thin ice being ridged |
|---|
| 124 | astar = 0.05 ! equivalent of gstar (0.05 for TH75 and 0.03 for weaker ice) |
|---|
| 125 | Hstar = 100.0 ! parameter determining the maximum thickness of ridged ice |
|---|
| 126 | raftswi = 1 ! rafting or not |
|---|
| 127 | hparmeter = 0.75 ! threshold thickness for rafting or not |
|---|
| 128 | Craft = 5.0 ! coefficient used in the rafting function |
|---|
| 129 | ridge_por = 0.3 ! initial porosity of the ridged ice (typically 0.30) |
|---|
| 130 | sal_max_ridge = 15.0 ! maximum ridged ice salinity |
|---|
| 131 | partfun_swi = 1 ! participation function linear, TH75 (0) or exponential Letal07 (1) |
|---|
| 132 | transfun_swi = 0 ! transfer function uniform of H80 (0) or exponential Letal07 (1) |
|---|
| 133 | brinstren_swi = 0 ! (1) use brine volume to diminish ice strength |
|---|
| 134 | / |
|---|
| 135 | !----------------------------------------------------------------------- |
|---|
| 136 | &namicedia ! ice diagnostics |
|---|
| 137 | !----------------------------------------------------------------------- |
|---|
| 138 | fmtinf ='1PE13.5 ' ! format of the output values |
|---|
| 139 | nfrinf = 4 ! number of variables written in one line |
|---|
| 140 | ntmoy = 1 ! instantaneous values of ice evolution or averaging |
|---|
| 141 | ninfo = 1 ! frequency of ouputs on file ice_evolu in case of averaging |
|---|
| 142 | / |
|---|
| 143 | !!----------------------------------------------------------------------- |
|---|
| 144 | !&namicehsb ! Heat and salt budgets |
|---|
| 145 | !!----------------------------------------------------------------------- |
|---|
| 146 | ! |
|---|
| 147 | !/ |
|---|
| 148 | !----------------------------------------------------------------------- |
|---|
| 149 | &namiceout ! parameters for outputs |
|---|
| 150 | !----------------------------------------------------------------------- |
|---|
| 151 | / |
|---|
| 152 | |
|---|
