| 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 | ln_limdyn = .true. ! ice dynamics (T) or thermodynamics only (F) |
|---|
| 17 | acrit = 1.0e-02 , 1.0e-02 ! minimum fraction for leads in the Northern (Southern) Hemisphere |
|---|
| 18 | hsndif = 0.0 ! computation of temperature in snow (=0.0) or not |
|---|
| 19 | hicdif = 0.0 ! computation of temperature in ice (=0.0) or not (=9999.0) |
|---|
| 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 | / |
|---|
| 24 | !----------------------------------------------------------------------- |
|---|
| 25 | &namiceini ! ice initialisation |
|---|
| 26 | !----------------------------------------------------------------------- |
|---|
| 27 | ttest = 2.0 ! threshold water temperature for initial sea ice |
|---|
| 28 | hninn = 0.3 ! initial snow thickness in the north |
|---|
| 29 | hnins = 0.1 ! " " south |
|---|
| 30 | hginn = 3.50 ! initial undeformed ice thickness in the north |
|---|
| 31 | hgins = 1.0 ! " " " south |
|---|
| 32 | aginn = 0.95 ! initial undeformed ice concentration in the north |
|---|
| 33 | agins = 0.9 ! " " " south |
|---|
| 34 | sinn = 6.301 ! initial salinity in the north |
|---|
| 35 | sins = 6.301 ! " " south |
|---|
| 36 | / |
|---|
| 37 | !----------------------------------------------------------------------- |
|---|
| 38 | &namicedyn ! ice dynamic |
|---|
| 39 | !----------------------------------------------------------------------- |
|---|
| 40 | epsd = 1.0e-20 ! tolerance parameter |
|---|
| 41 | alpha = 0.5 ! coefficient for semi-implicit coriolis |
|---|
| 42 | dm = 0.6e+03 ! diffusion constant for dynamics |
|---|
| 43 | nbiter = 1 ! number of sub-time steps for relaxation |
|---|
| 44 | nbitdr = 500 ! maximum number of iterations for relaxation |
|---|
| 45 | om = 0.5 ! relaxation constant |
|---|
| 46 | resl = 5.0e-05 ! maximum value for the residual of relaxation |
|---|
| 47 | cw = 5.0e-03 ! drag coefficient for oceanic stress |
|---|
| 48 | angvg = 0.0 ! turning angle for oceanic stress |
|---|
| 49 | pstar = 4.0e+04 ! 1st bulk-rheology parameter |
|---|
| 50 | c_rhg = 20.0 ! 2nd bulk-rhelogy parameter |
|---|
| 51 | etamn = 0.0e+07 ! minimun value for viscosity |
|---|
| 52 | creepl = 1.0e-12 ! creep limit |
|---|
| 53 | ecc = 2.0 ! eccentricity of the elliptical yield curve |
|---|
| 54 | ahi0 = 350.e0 ! horizontal eddy diffusivity coefficient for sea-ice [m2/s] |
|---|
| 55 | nevp = 300 ! number of iterations for subcycling in EVP, SB, 400 |
|---|
| 56 | telast =9600.0 ! timescale for elastic waves, SB, 720.0 |
|---|
| 57 | alphaevp = 1.0 ! coefficient for the solution of internal ice stresses |
|---|
| 58 | / |
|---|
| 59 | !----------------------------------------------------------------------- |
|---|
| 60 | &namicetrp ! ice transport |
|---|
| 61 | !----------------------------------------------------------------------- |
|---|
| 62 | bound = 0. ! boundary conditions (=0.0 no-slip, =1.0 free-slip) |
|---|
| 63 | / |
|---|
| 64 | !----------------------------------------------------------------------- |
|---|
| 65 | &namicethd ! ice thermodynamic |
|---|
| 66 | !----------------------------------------------------------------------- |
|---|
| 67 | hmelt = -0.15 ! maximum melting at the bottom |
|---|
| 68 | hiccrit = 0.1 , 0.1 ! ice thickness for lateral accretion in the Northern (Southern) Hemisphere |
|---|
| 69 | ! caution 1.0, 1.0 best value to be used!!! (gilles G.) ???? |
|---|
| 70 | fraz_swi = 0.0 ! use of frazil ice collection thickness in function of wind (1.0) or not (0.0) |
|---|
| 71 | maxfrazb = 0.0 ! maximum portion of frazil ice collecting at the ice bottom |
|---|
| 72 | vfrazb = 0.4166667 ! thresold drift speed for frazil ice collecting at the ice bottom |
|---|
| 73 | Cfrazb = 5.0 ! squeezing coefficient for frazil ice collecting at the ice bottom |
|---|
| 74 | hicmin = 0.2 ! ice thickness corr. to max. energy stored in brine pocket |
|---|
| 75 | hiclim = 0.10 ! minimum ice thickness |
|---|
| 76 | amax = 0.999 ! maximum lead fraction |
|---|
| 77 | sbeta = 1. ! numerical caracteritic of the scheme for diffusion in ice |
|---|
| 78 | ! Cranck-Nicholson (=0.5), implicit (=1), explicit (=0) |
|---|
| 79 | parlat = 0.0 ! percentage of energy used for lateral ablation |
|---|
| 80 | hakspl = 0.25 ! slope of distr. for Hakkinen-Mellor's lateral melting |
|---|
| 81 | hibspl = 0.5 ! slope of distribution for Hibler's lateral melting |
|---|
| 82 | exld = 2.0 ! exponent for leads-closure rate |
|---|
| 83 | hakdif = 1.0 ! coefficient for diffusions of ice and snow |
|---|
| 84 | thth = 0.2 ! threshold thickness for comp. of eq. thermal conductivity |
|---|
| 85 | hnzst = 0.1 ! thickness of the surf. layer in temp. computation |
|---|
| 86 | parsub = 1.0 ! switch for snow sublimation or not |
|---|
| 87 | alphs = 1.0 ! coefficient for snow density when snow ice formation |
|---|
| 88 | betas = 0.6 ! exponent in lead-ice fractionation of snow precipitation 0.66 |
|---|
| 89 | ! betas = 1 -> equipartition, betas < 1 -> more on leads |
|---|
| 90 | kappa_i = 1.0 ! extinction radiation parameter in sea ice (1.0) |
|---|
| 91 | nconv_i_thd = 50 ! maximal number of iterations for heat diffusion computation |
|---|
| 92 | maxer_i_thd = 0.0001 ! maximal error in temperature for heat diffusion computation |
|---|
| 93 | thcon_i_swi = 1 ! switch for computation of thermal conductivity in the ice |
|---|
| 94 | ! (0) Untersteiner (1964), (1) Pringle et al. (2007) |
|---|
| 95 | / |
|---|
| 96 | !----------------------------------------------------------------------- |
|---|
| 97 | &namicesal ! ice salinity |
|---|
| 98 | !----------------------------------------------------------------------- |
|---|
| 99 | num_sal = 2 ! salinity option: 1 -> S = bulk_sal |
|---|
| 100 | ! 2 -> S = S(z,t) with a simple parameterization |
|---|
| 101 | ! 3 -> S = S(z) profile of Scwharzacher [1959] |
|---|
| 102 | ! 4 -> S = S(h) Cox and Weeks [1974] |
|---|
| 103 | bulk_sal = 4.0 ! if 1 is used, it represents the ice salinity |
|---|
| 104 | sal_G = 5.00 ! restoring salinity for GD |
|---|
| 105 | time_G = 1.728e+6 ! restoring time for GD |
|---|
| 106 | sal_F = 2.00 ! restoring salinity for flushing |
|---|
| 107 | time_F = 8.640e+5 ! restoring time for flushing |
|---|
| 108 | s_i_max = 20.0 ! Maximum salinity |
|---|
| 109 | s_i_min = 0.1 ! Minimum tolerated ice salinity |
|---|
| 110 | s_i_0 = 3.5 ! 1st salinity for salinity profile |
|---|
| 111 | s_i_1 = 4.5 ! 2nd salinity for salinity profile |
|---|
| 112 | / |
|---|
| 113 | !----------------------------------------------------------------------- |
|---|
| 114 | &namiceitdme ! parameters for mechanical redistribution of ice |
|---|
| 115 | !----------------------------------------------------------------------- |
|---|
| 116 | ridge_scheme_swi = 0 ! which ridging scheme using (1=Rothrock,else=Hibler79) |
|---|
| 117 | Cs = 0.50 ! shearing energy contribution to ridging |
|---|
| 118 | Cf = 17.0 ! ratio of ridging work to PE change in ridging |
|---|
| 119 | fsnowrdg = 0.5 ! snow fraction that survives in ridging |
|---|
| 120 | fsnowrft = 0.5 ! snow fraction that survives in rafting |
|---|
| 121 | Gstar = 0.15 ! fractional area of thin ice being ridged |
|---|
| 122 | astar = 0.05 ! equivalent of gstar (0.05 for TH75 and 0.03 for weaker ice) |
|---|
| 123 | Hstar = 100.0 ! parameter determining the maximum thickness of ridged ice |
|---|
| 124 | raftswi = 1 ! rafting or not |
|---|
| 125 | hparmeter = 0.75 ! threshold thickness for rafting or not |
|---|
| 126 | Craft = 5.0 ! coefficient used in the rafting function |
|---|
| 127 | ridge_por = 0.3 ! initial porosity of the ridged ice (typically 0.30) |
|---|
| 128 | sal_max_ridge = 15.0 ! maximum ridged ice salinity |
|---|
| 129 | partfun_swi = 1 ! participation function linear, TH75 (0) or exponential Letal07 (1) |
|---|
| 130 | transfun_swi = 0 ! transfer function uniform of H80 (0) or exponential Letal07 (1) |
|---|
| 131 | brinstren_swi = 0 ! (1) use brine volume to diminish ice strength |
|---|
| 132 | / |
|---|
| 133 | !----------------------------------------------------------------------- |
|---|
| 134 | &namicedia ! ice diagnostics |
|---|
| 135 | !----------------------------------------------------------------------- |
|---|
| 136 | fmtinf ='1PE13.5 ' ! format of the output values |
|---|
| 137 | nfrinf = 4 ! number of variables written in one line |
|---|
| 138 | ntmoy = 1 ! instantaneous values of ice evolution or averaging |
|---|
| 139 | ninfo = 1 ! frequency of ouputs on file ice_evolu in case of averaging |
|---|
| 140 | / |
|---|
| 141 | !----------------------------------------------------------------------- |
|---|
| 142 | &namiceout ! parameters for outputs |
|---|
| 143 | !----------------------------------------------------------------------- |
|---|
| 144 | noumef = 37 ! number of fields |
|---|
| 145 | add_diag_swi= 1 ! 1 -> diagnose distribution in thickness space |
|---|
| 146 | ! 0 -> only simple diagnostics |
|---|
| 147 | ! |
|---|
| 148 | ! ! title of the field ! name ! units ! save ! multipl. ! additive ! |
|---|
| 149 | ! ! ! ! ! or not ! factor ! factor ! |
|---|
| 150 | field_1 = 'Ice concentration ', 'iiceconc', '% ', 1 , 1.0 , 0.0 |
|---|
| 151 | field_2 = 'Ice thickness ', 'iicethic', 'm ', 1 , 1.0 , 0.0 |
|---|
| 152 | field_3 = 'Snow thickness ', 'isnowthi', 'm ', 1 , 1.0 , 0.0 |
|---|
| 153 | field_4 = 'Daily bottom thermo ice production ', 'iicebopr', 'cm/day ', 1 , 100. , 0.0 |
|---|
| 154 | field_5 = 'Daily dynamic ice production ', 'iicedypr', 'cm/day ', 1 , 100. , 0.0 |
|---|
| 155 | field_6 = 'Oceanic flux at the ice base ', 'ioceflxb', 'w/m2 ', 1 , 1.0 , 0.0 |
|---|
| 156 | field_7 = 'Ice velocity u ', 'iicevelu', 'm/s ', 1 , 1.0 , 0.0 |
|---|
| 157 | field_8 = 'Ice velocity v ', 'iicevelv', 'm/s ', 1 , 1.0 , 0.0 |
|---|
| 158 | field_9 = 'Sea surface temperature ', 'isstempe', 'C ', 1 , 1.0 , -273.15 |
|---|
| 159 | field_10 = 'Sea surface salinity ', 'isssalin', 'PSU ', 1 , 1.0 , 0.0 |
|---|
| 160 | field_11 = 'Total flux at ocean surface ', 'iocetflx', 'w/m2 ', 1 , 1.0 , 0.0 |
|---|
| 161 | field_12 = 'Solar flux at ocean surface ', 'iocesflx', 'w/m2 ', 1 , 1.0 , 0.0 |
|---|
| 162 | field_13 = 'Non-solar flux at ocean surface ', 'iocwnsfl', 'w/m2 ', 1 , 1.0 , 0.0 |
|---|
| 163 | field_14 = 'Heat flux due to brine release ', 'iocehebr', 'w/m2 ', 1 , 1.0 , 0.0 |
|---|
| 164 | field_15 = 'Wind stress u ', 'iocestru', 'Pa ', 1 , 1.0 , 0.0 |
|---|
| 165 | field_16 = 'Wind stress v ', 'iocestrv', 'Pa ', 1 , 1.0 , 0.0 |
|---|
| 166 | field_17 = 'Solar flux at ice/ocean surface ', 'iicesflx', 'w/m2 ', 1 , 1.0 , 0.0 |
|---|
| 167 | field_18 = 'Non-solar flux at ice/ocean surface', 'iicenflx', 'w/m2 ', 1 , 1.0 , 0.0 |
|---|
| 168 | field_19 = 'Snow precipitation ', 'isnowpre', 'kg/day ', 1 , 1.0 , 0.0 |
|---|
| 169 | field_20 = 'Mean ice salinity ', 'iicesali', 'psu ', 1 , 1.0 , 0.0 |
|---|
| 170 | field_21 = 'Mean ice age ', 'iiceages', 'years ', 1 , 0.002739, 0.0 |
|---|
| 171 | field_22 = 'Daily lateral thermo ice prod. ', 'iicelapr', 'cm/day ', 1 ,100. , 0.0 |
|---|
| 172 | field_23 = 'Daily snowice ice production ', 'iicesipr', 'cm/day ', 1 ,100. , 0.0 |
|---|
| 173 | field_24 = 'Mean ice temperature ', 'iicetemp', 'C ', 1 , 1.0 , -273.15 |
|---|
| 174 | field_25 = 'Ice total heat content ', 'iiceheco', '10^9 J ', 1 , 1.0 , 0.0 |
|---|
| 175 | field_26 = 'Ice surface temperature ', 'iicesurt', 'C ', 1 , 1.0 , -273.15 |
|---|
| 176 | field_27 = 'Snow temperature ', 'isnotem2', 'C ', 1 , 1.0 , -273.15 |
|---|
| 177 | field_28 = 'Fsbri - brine salt flux ', 'iicfsbri', 'kg/m2/s ', 1 , 1.0 , 0.0 |
|---|
| 178 | field_29 = 'Fseqv - equivalent FW salt flux ', 'iicfseqv', 'kg/m2/s ', 1 , 1.0 , 0.0 |
|---|
| 179 | field_30 = 'Brine volume ', 'ibrinvol', '% ', 1 , 100.0 , 0.0 |
|---|
| 180 | field_31 = 'Frazil ice collection thickness ', 'iicecolf', 'm ', 1 , 1.0 , 0.0 |
|---|
| 181 | field_32 = 'Ice strength ', 'iicestre', 'N/m ', 1 , 0.001 , 0.0 |
|---|
| 182 | field_33 = 'Ice velocity ', 'iicevelo', 'm/s ', 1 , 1.0 , 0.0 |
|---|
| 183 | field_34 = 'Surface melt ', 'iicesume', 'cm/day ', 1 ,100. , 0.0 |
|---|
| 184 | field_35 = 'Bottom melt ', 'iicebome', 'cm/day ', 1 ,100. , 0.0 |
|---|
| 185 | field_36 = 'Divergence ', 'iicedive', '10-8s-1 ', 1 , 1.0e8 , 0.0 |
|---|
| 186 | field_37 = 'Shear ', 'iiceshea', '10-8s-1 ', 1 , 1.0e8 , 0.0 |
|---|
| 187 | / |
|---|
