1 | MODULE icedyn_adv |
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2 | !!====================================================================== |
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3 | !! *** MODULE icedyn_adv *** |
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4 | !! sea-ice: advection |
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5 | !!====================================================================== |
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6 | !! History : 4.0 ! 2018 (many people) SI3 [aka Sea Ice cube] |
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7 | !!---------------------------------------------------------------------- |
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8 | #if defined key_si3 |
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9 | !!---------------------------------------------------------------------- |
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10 | !! 'key_si3' SI3 sea-ice model |
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11 | !!---------------------------------------------------------------------- |
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12 | !! ice_dyn_adv : advection of sea ice variables |
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13 | !!---------------------------------------------------------------------- |
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14 | USE phycst ! physical constant |
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15 | USE dom_oce ! ocean domain |
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16 | USE sbc_oce , ONLY : nn_fsbc ! frequency of sea-ice call |
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17 | USE ice ! sea-ice: variables |
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18 | USE icevar ! sea-ice: operations |
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19 | USE icedyn_adv_pra ! sea-ice: advection scheme (Prather) |
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20 | USE icedyn_adv_umx ! sea-ice: advection scheme (ultimate-macho) |
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21 | USE icectl ! sea-ice: control prints |
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22 | ! |
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23 | USE in_out_manager ! I/O manager |
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24 | USE iom ! I/O manager library |
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25 | USE lib_mpp ! MPP library |
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26 | USE lib_fortran ! fortran utilities (glob_sum + no signed zero) |
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27 | USE timing ! Timing |
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28 | USE prtctl ! Print control |
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29 | |
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30 | IMPLICIT NONE |
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31 | PRIVATE |
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32 | |
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33 | PUBLIC ice_dyn_adv ! called by icestp |
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34 | PUBLIC ice_dyn_adv_init ! called by icedyn |
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35 | |
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36 | INTEGER :: nice_adv ! choice of the type of advection scheme |
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37 | ! ! associated indices: |
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38 | INTEGER, PARAMETER :: np_advPRA = 1 ! Prather scheme |
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39 | INTEGER, PARAMETER :: np_advUMx = 2 ! Ultimate-Macho scheme |
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40 | ! |
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41 | ! ** namelist (namdyn_adv) ** |
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42 | INTEGER :: nn_UMx ! order of the UMx advection scheme |
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43 | ! |
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44 | !! * Substitution |
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45 | # include "vectopt_loop_substitute.h90" |
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46 | !!---------------------------------------------------------------------- |
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47 | !! NEMO/ICE 4.0 , NEMO Consortium (2018) |
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48 | !! $Id: icedyn_adv.F90 8373 2017-07-25 17:44:54Z clem $ |
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49 | !! Software governed by the CeCILL licence (./LICENSE) |
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50 | !!---------------------------------------------------------------------- |
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51 | CONTAINS |
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52 | |
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53 | SUBROUTINE ice_dyn_adv( kt ) |
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54 | !!---------------------------------------------------------------------- |
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55 | !! *** ROUTINE ice_dyn_adv *** |
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56 | !! |
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57 | !! ** purpose : advection of sea ice |
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58 | !! |
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59 | !! ** method : One can choose between |
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60 | !! a) an Ultimate-Macho scheme (with order defined by nn_UMx) => ln_adv_UMx |
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61 | !! b) and a second order Prather scheme => ln_adv_Pra |
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62 | !! |
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63 | !! ** action : |
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64 | !!---------------------------------------------------------------------- |
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65 | INTEGER, INTENT(in) :: kt ! number of iteration |
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66 | ! |
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67 | INTEGER :: jl ! dummy loop indice |
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68 | REAL(wp), DIMENSION(jpi,jpj) :: zmask ! fraction of time step with v_i < 0 |
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69 | !!--------------------------------------------------------------------- |
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70 | ! |
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71 | IF( ln_timing ) CALL timing_start('icedyn_adv') |
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72 | ! |
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73 | IF( kt == nit000 .AND. lwp ) THEN |
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74 | WRITE(numout,*) |
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75 | WRITE(numout,*) 'ice_dyn_adv: sea-ice advection' |
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76 | WRITE(numout,*) '~~~~~~~~~~~' |
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77 | ENDIF |
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78 | |
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79 | ! conservation test |
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80 | IF( ln_icediachk ) CALL ice_cons_hsm(0, 'icedyn_adv', rdiag_v, rdiag_s, rdiag_t, rdiag_fv, rdiag_fs, rdiag_ft) |
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81 | |
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82 | !---------- |
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83 | ! Advection |
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84 | !---------- |
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85 | SELECT CASE( nice_adv ) |
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86 | ! !-----------------------! |
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87 | CASE( np_advUMx ) ! ULTIMATE-MACHO scheme ! |
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88 | ! !-----------------------! |
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89 | CALL ice_dyn_adv_umx( nn_UMx, kt, u_ice, v_ice, ato_i, v_i, v_s, sv_i, oa_i, a_i, a_ip, v_ip, e_s, e_i ) |
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90 | ! !-----------------------! |
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91 | CASE( np_advPRA ) ! PRATHER scheme ! |
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92 | ! !-----------------------! |
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93 | CALL ice_dyn_adv_pra( kt, u_ice, v_ice, ato_i, v_i, v_s, sv_i, oa_i, a_i, a_ip, v_ip, e_s, e_i ) |
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94 | END SELECT |
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95 | |
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96 | !---------------------------- |
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97 | ! Debug the advection schemes |
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98 | !---------------------------- |
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99 | ! clem: At least one advection scheme above is not strictly positive => UMx |
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100 | ! In Prather, I am not sure if the fields are bounded by 0 or not (it seems yes) |
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101 | ! In UMx , advected fields are not perfectly bounded and negative values can appear. |
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102 | ! These values are usually very small but in some occasions they can also be non-negligible |
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103 | ! Therefore one needs to bound the advected fields by 0 (though this is not a clean fix) |
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104 | ! |
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105 | ! record the negative values resulting from UMx |
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106 | zmask(:,:) = 0._wp ! keep the init to 0 here |
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107 | DO jl = 1, jpl |
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108 | WHERE( v_i(:,:,jl) < 0._wp ) zmask(:,:) = 1._wp |
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109 | END DO |
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110 | IF( iom_use('iceneg_pres') ) CALL iom_put("iceneg_pres", zmask ) ! fraction of time step with v_i < 0 |
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111 | IF( iom_use('iceneg_volu') ) CALL iom_put("iceneg_volu", SUM(MIN( v_i, 0. ), dim=3 ) ) ! negative ice volume (only) |
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112 | IF( iom_use('iceneg_hfx' ) ) CALL iom_put("iceneg_hfx" , ( SUM(SUM( MIN( e_i(:,:,1:nlay_i,:), 0. ) & ! negative ice heat content (only) |
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113 | & , dim=4 ), dim=3 ) )* r1_rdtice ) ! -- eq. heat flux [W/m2] |
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114 | ! |
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115 | ! ==> conservation is ensured by calling this routine below, |
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116 | ! however the global ice volume is then changed by advection (but errors are small) |
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117 | CALL ice_var_zapneg( ato_i, v_i, v_s, sv_i, oa_i, a_i, a_ip, v_ip, e_s, e_i ) |
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118 | |
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119 | !------------ |
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120 | ! diagnostics |
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121 | !------------ |
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122 | diag_trp_ei(:,:) = SUM(SUM( e_i (:,:,1:nlay_i,:) - e_i_b (:,:,1:nlay_i,:), dim=4 ), dim=3 ) * r1_rdtice |
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123 | diag_trp_es(:,:) = SUM(SUM( e_s (:,:,1:nlay_s,:) - e_s_b (:,:,1:nlay_s,:), dim=4 ), dim=3 ) * r1_rdtice |
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124 | diag_trp_sv(:,:) = SUM( sv_i(:,:,:) - sv_i_b(:,:,:) , dim=3 ) * r1_rdtice |
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125 | diag_trp_vi(:,:) = SUM( v_i (:,:,:) - v_i_b (:,:,:) , dim=3 ) * r1_rdtice |
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126 | diag_trp_vs(:,:) = SUM( v_s (:,:,:) - v_s_b (:,:,:) , dim=3 ) * r1_rdtice |
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127 | IF( iom_use('icemtrp') ) CALL iom_put( "icemtrp" , diag_trp_vi * rhoi ) ! ice mass transport |
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128 | IF( iom_use('snwmtrp') ) CALL iom_put( "snwmtrp" , diag_trp_vs * rhos ) ! snw mass transport |
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129 | IF( iom_use('salmtrp') ) CALL iom_put( "salmtrp" , diag_trp_sv * rhoi * 1.e-03 ) ! salt mass transport (kg/m2/s) |
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130 | IF( iom_use('dihctrp') ) CALL iom_put( "dihctrp" , -diag_trp_ei ) ! advected ice heat content (W/m2) |
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131 | IF( iom_use('dshctrp') ) CALL iom_put( "dshctrp" , -diag_trp_es ) ! advected snw heat content (W/m2) |
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132 | |
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133 | ! controls |
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134 | IF( ln_icediachk ) CALL ice_cons_hsm(1, 'icedyn_adv', rdiag_v, rdiag_s, rdiag_t, rdiag_fv, rdiag_fs, rdiag_ft) ! conservation |
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135 | IF( ln_icectl ) CALL ice_prt (kt, iiceprt, jiceprt,-1, ' - ice dyn & trp - ') ! prints |
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136 | IF( ln_timing ) CALL timing_stop ('icedyn_adv') ! timing |
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137 | ! |
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138 | END SUBROUTINE ice_dyn_adv |
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139 | |
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140 | |
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141 | SUBROUTINE ice_dyn_adv_init |
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142 | !!------------------------------------------------------------------- |
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143 | !! *** ROUTINE ice_dyn_adv_init *** |
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144 | !! |
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145 | !! ** Purpose : Physical constants and parameters linked to the ice |
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146 | !! dynamics |
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147 | !! |
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148 | !! ** Method : Read the namdyn_adv namelist and check the ice-dynamic |
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149 | !! parameter values called at the first timestep (nit000) |
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150 | !! |
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151 | !! ** input : Namelist namdyn_adv |
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152 | !!------------------------------------------------------------------- |
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153 | INTEGER :: ios, ioptio ! Local integer output status for namelist read |
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154 | !! |
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155 | NAMELIST/namdyn_adv/ ln_adv_Pra, ln_adv_UMx, nn_UMx |
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156 | !!------------------------------------------------------------------- |
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157 | ! |
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158 | REWIND( numnam_ice_ref ) ! Namelist namdyn_adv in reference namelist : Ice dynamics |
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159 | READ ( numnam_ice_ref, namdyn_adv, IOSTAT = ios, ERR = 901) |
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160 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namdyn_adv in reference namelist', lwp ) |
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161 | REWIND( numnam_ice_cfg ) ! Namelist namdyn_adv in configuration namelist : Ice dynamics |
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162 | READ ( numnam_ice_cfg, namdyn_adv, IOSTAT = ios, ERR = 902 ) |
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163 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namdyn_adv in configuration namelist', lwp ) |
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164 | IF(lwm) WRITE( numoni, namdyn_adv ) |
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165 | ! |
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166 | IF(lwp) THEN ! control print |
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167 | WRITE(numout,*) |
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168 | WRITE(numout,*) 'ice_dyn_adv_init: ice parameters for ice dynamics ' |
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169 | WRITE(numout,*) '~~~~~~~~~~~~~~~~' |
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170 | WRITE(numout,*) ' Namelist namdyn_adv:' |
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171 | WRITE(numout,*) ' type of advection scheme (Prather) ln_adv_Pra = ', ln_adv_Pra |
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172 | WRITE(numout,*) ' type of advection scheme (Ulimate-Macho) ln_adv_UMx = ', ln_adv_UMx |
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173 | WRITE(numout,*) ' order of the Ultimate-Macho scheme nn_UMx = ', nn_UMx |
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174 | ENDIF |
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175 | ! |
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176 | ! !== set the choice of ice advection ==! |
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177 | ioptio = 0 |
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178 | IF( ln_adv_Pra ) THEN ; ioptio = ioptio + 1 ; nice_adv = np_advPRA ; ENDIF |
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179 | IF( ln_adv_UMx ) THEN ; ioptio = ioptio + 1 ; nice_adv = np_advUMx ; ENDIF |
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180 | IF( ioptio /= 1 ) CALL ctl_stop( 'ice_dyn_adv_init: choose one and only one ice adv. scheme (ln_adv_Pra or ln_adv_UMx)' ) |
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181 | ! |
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182 | IF( ln_adv_Pra ) CALL adv_pra_init !* read or initialize all required files |
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183 | ! |
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184 | END SUBROUTINE ice_dyn_adv_init |
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185 | |
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186 | #else |
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187 | !!---------------------------------------------------------------------- |
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188 | !! Default option Empty Module NO SI3 sea-ice model |
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189 | !!---------------------------------------------------------------------- |
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190 | #endif |
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191 | |
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192 | !!====================================================================== |
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193 | END MODULE icedyn_adv |
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194 | |
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