1 | MODULE limvar |
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2 | #if defined key_lim3 |
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3 | !!====================================================================== |
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4 | !! *** MODULE limvar *** |
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5 | !! Different sets of ice model variables |
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6 | !! how to switch from one to another |
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7 | !! |
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8 | !! There are three sets of variables |
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9 | !! VGLO : global variables of the model |
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10 | !! - v_i (jpi,jpj,jpl) |
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11 | !! - v_s (jpi,jpj,jpl) |
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12 | !! - a_i (jpi,jpj,jpl) |
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13 | !! - t_s (jpi,jpj,jpl) |
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14 | !! - e_i (jpi,jpj,nlay_i,jpl) |
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15 | !! - smv_i(jpi,jpj,jpl) |
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16 | !! - oa_i (jpi,jpj,jpl) |
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17 | !! VEQV : equivalent variables sometimes used in the model |
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18 | !! - ht_i(jpi,jpj,jpl) |
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19 | !! - ht_s(jpi,jpj,jpl) |
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20 | !! - t_i (jpi,jpj,nlay_i,jpl) |
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21 | !! ... |
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22 | !! VAGG : aggregate variables, averaged/summed over all |
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23 | !! thickness categories |
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24 | !! - vt_i(jpi,jpj) |
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25 | !! - vt_s(jpi,jpj) |
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26 | !! - at_i(jpi,jpj) |
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27 | !! - et_s(jpi,jpj) !total snow heat content |
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28 | !! - et_i(jpi,jpj) !total ice thermal content |
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29 | !! - smt_i(jpi,jpj) !mean ice salinity |
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30 | !! - ot_i(jpi,jpj) !average ice age |
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31 | !!====================================================================== |
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32 | |
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33 | !!---------------------------------------------------------------------- |
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34 | !! * Modules used |
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35 | USE dom_ice |
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36 | USE par_oce ! ocean parameters |
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37 | USE phycst ! physical constants (ocean directory) |
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38 | USE ice_oce ! ice variables |
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39 | USE thd_ice |
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40 | USE limicepoints |
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41 | USE in_out_manager |
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42 | USE ice |
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43 | USE par_ice |
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44 | |
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45 | IMPLICIT NONE |
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46 | PRIVATE |
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47 | |
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48 | !! * Routine accessibility |
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49 | PUBLIC lim_var_agg |
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50 | PUBLIC lim_var_glo2eqv |
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51 | PUBLIC lim_var_eqv2glo |
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52 | PUBLIC lim_var_salprof |
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53 | PUBLIC lim_var_bv |
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54 | PUBLIC lim_var_salprof1d |
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55 | |
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56 | !! * Module variables |
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57 | REAL(wp) :: & ! constant values |
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58 | epsi20 = 1e-20 , & |
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59 | epsi13 = 1e-13 , & |
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60 | zzero = 0.e0 , & |
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61 | zone = 1.e0 |
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62 | |
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63 | !!---------------------------------------------------------------------- |
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64 | !! LIM-@ 4.0, UCL-ASTR (2006) |
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65 | !! (c) UCL-ASTR and Martin Vancoppenolle |
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66 | !!---------------------------------------------------------------------- |
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67 | |
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68 | CONTAINS |
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69 | |
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70 | SUBROUTINE lim_var_agg(n) |
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71 | !!------------------------------------------------------------------ |
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72 | !! *** ROUTINE lim_var_agg *** |
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73 | !! ** Purpose : |
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74 | !! This routine aggregates ice-thickness-category variables to |
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75 | !! all-ice variables |
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76 | !! i.e. it turns VGLO into VAGG |
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77 | !! ** Method : |
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78 | !! |
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79 | !! ** Arguments : |
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80 | !! kideb , kiut : Starting and ending points on which the |
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81 | !! the computation is applied |
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82 | !! |
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83 | !! ** Inputs / Ouputs : (global commons) |
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84 | !! ** Arguments : n = 1, at_i vt_i only |
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85 | !! n = 2 everything |
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86 | !! |
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87 | !! ** External : |
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88 | !! |
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89 | !! ** References : |
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90 | !! |
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91 | !! ** History : |
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92 | !! (01-2006) Martin Vancoppenolle, UCL-ASTR |
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93 | !! Take it easy man |
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94 | !! Life is just a simple game, between ups / and downs \ :@) |
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95 | !! |
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96 | !! note : you could add an argument when you need only at_i, vt_i |
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97 | !! and when you need everything |
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98 | !!------------------------------------------------------------------ |
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99 | !! * Arguments |
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100 | |
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101 | !! * Local variables |
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102 | INTEGER :: ji, & ! spatial dummy loop index |
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103 | jj, & ! spatial dummy loop index |
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104 | jk, & ! vertical layering dummy loop index |
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105 | jl, & ! ice category dummy loop index |
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106 | jm, & ! ice types dummy loop index |
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107 | index |
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108 | |
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109 | REAL :: zeps, epsi16, zinda, epsi06 |
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110 | |
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111 | INTEGER, INTENT( in ) :: n ! describes what is needed |
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112 | |
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113 | !!-- End of declarations |
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114 | !!---------------------------------------------------------------------------------------------- |
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115 | zeps = 1.0e-13 |
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116 | epsi16 = 1.0e-16 |
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117 | epsi06 = 1.0e-6 |
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118 | |
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119 | IF(lwp) THEN |
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120 | WRITE(numout,*) |
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121 | WRITE(numout,*) 'lim_var_agg : Aggregate ice variables ' |
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122 | WRITE(numout,*) '~~~~~~~~~~~' |
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123 | ENDIF |
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124 | |
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125 | !------------------ |
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126 | ! Zero everything |
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127 | !------------------ |
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128 | |
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129 | vt_i(:,:) = 0.0 |
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130 | vt_s(:,:) = 0.0 |
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131 | at_i(:,:) = 0.0 |
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132 | ato_i(:,:) = 1.0 |
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133 | |
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134 | IF ( n .GT. 1 ) THEN |
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135 | et_s(:,:) = 0.0 |
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136 | ot_i(:,:) = 0.0 |
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137 | smt_i(:,:) = 0.0 |
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138 | et_i(:,:) = 0.0 |
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139 | ENDIF |
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140 | |
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141 | !-------------------- |
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142 | ! Compute variables |
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143 | !-------------------- |
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144 | |
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145 | DO jl = 1, jpl |
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146 | DO jj = 1, jpj |
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147 | DO ji = 1, jpi |
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148 | |
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149 | vt_i(ji,jj) = vt_i(ji,jj) + v_i(ji,jj,jl) ! ice volume |
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150 | vt_s(ji,jj) = vt_s(ji,jj) + v_s(ji,jj,jl) ! snow volume |
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151 | at_i(ji,jj) = at_i(ji,jj) + a_i(ji,jj,jl) ! ice concentration |
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152 | |
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153 | zinda = MAX( zzero , SIGN( zone , at_i(ji,jj) - 0.10 ) ) |
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154 | icethi(ji,jj) = vt_i(ji,jj) / MAX(at_i(ji,jj),epsi16)*zinda |
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155 | ! ice thickness |
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156 | END DO |
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157 | END DO |
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158 | END DO |
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159 | |
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160 | DO jj = 1, jpj |
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161 | DO ji = 1, jpi |
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162 | ato_i(ji,jj) = MAX(1.0 - at_i(ji,jj), 0.0) ! open water fraction |
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163 | END DO |
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164 | END DO |
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165 | |
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166 | IF ( n .GT. 1 ) THEN |
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167 | |
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168 | DO jl = 1, jpl |
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169 | DO jj = 1, jpj |
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170 | DO ji = 1, jpi |
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171 | et_s(ji,jj) = et_s(ji,jj) + & ! snow heat content |
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172 | e_s(ji,jj,1,jl) |
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173 | zinda = MAX( zzero , SIGN( zone , vt_i(ji,jj) - 0.10 ) ) |
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174 | smt_i(ji,jj) = smt_i(ji,jj) + & ! ice salinity |
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175 | smv_i(ji,jj,jl) / MAX( vt_i(ji,jj) , zeps ) * & |
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176 | zinda |
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177 | zinda = MAX( zzero , SIGN( zone , at_i(ji,jj) - 0.10 ) ) |
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178 | ot_i(ji,jj) = ot_i(ji,jj) + & ! ice age |
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179 | oa_i(ji,jj,jl) / MAX( at_i(ji,jj) , zeps ) * & |
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180 | zinda |
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181 | END DO |
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182 | END DO |
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183 | END DO |
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184 | |
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185 | DO jl = 1, jpl |
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186 | DO jk = 1, nlay_i |
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187 | DO jj = 1, jpj |
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188 | DO ji = 1, jpi |
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189 | et_i(ji,jj) = et_i(ji,jj) + e_i(ji,jj,jk,jl) ! ice heat |
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190 | ! content |
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191 | END DO |
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192 | END DO |
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193 | END DO |
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194 | END DO |
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195 | |
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196 | ENDIF ! n .GT. 1 |
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197 | |
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198 | END SUBROUTINE lim_var_agg |
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199 | |
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200 | !============================================================================== |
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201 | |
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202 | SUBROUTINE lim_var_glo2eqv |
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203 | !!------------------------------------------------------------------ |
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204 | !! *** ROUTINE lim_var_glo2eqv ***' |
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205 | !! ** Purpose : |
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206 | !! This routine computes equivalent variables as function of |
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207 | !! global variables |
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208 | !! i.e. it turns VGLO into VEQV |
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209 | !! ** Method : |
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210 | !! |
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211 | !! ** Arguments : |
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212 | !! kideb , kiut : Starting and ending points on which the |
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213 | !! the computation is applied |
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214 | !! |
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215 | !! ** Inputs / Ouputs : |
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216 | !! |
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217 | !! ** External : |
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218 | !! |
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219 | !! ** References : |
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220 | !! |
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221 | !! ** History : |
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222 | !! (01-2006) Martin Vancoppenolle, UCL-ASTR |
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223 | !! |
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224 | !!------------------------------------------------------------------ |
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225 | |
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226 | !! * Local variables |
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227 | INTEGER :: ji, & ! spatial dummy loop index |
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228 | jj, & ! spatial dummy loop index |
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229 | jk, & ! vertical layering dummy loop index |
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230 | jl, & ! ice category dummy loop index |
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231 | jm, & ! ice types dummy loop index |
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232 | index |
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233 | |
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234 | REAL :: zq_i, zaaa, zbbb, zccc, zdiscrim, & |
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235 | ztmelts, zindb, zq_s, zfac1, zfac2 |
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236 | |
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237 | REAL :: zeps, epsi06 |
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238 | |
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239 | zeps = 1.0e-10 |
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240 | epsi06 = 1.0e-06 |
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241 | |
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242 | !!-- End of declarations |
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243 | !!------------------------------------------------------------------------------ |
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244 | ! IF (lwp) THEN |
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245 | ! WRITE(numout,*) |
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246 | ! WRITE(numout,*) 'lim_var_glo2eqv : transform global variables into equivalent ice variables ' |
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247 | ! WRITE(numout,*) '~~~~~~~~~~~~~~~' |
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248 | ! ENDIF |
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249 | |
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250 | !------------------------------------------------------- |
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251 | ! Ice thickness, snow thickness, ice salinity, ice age |
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252 | !------------------------------------------------------- |
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253 | DO jl = 1, jpl |
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254 | DO jj = 1, jpj |
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255 | DO ji = 1, jpi |
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256 | zindb = 1.0-MAX(0.0,SIGN(1.0,- a_i(ji,jj,jl))) !0 if no ice and 1 if yes |
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257 | ht_i(ji,jj,jl) = v_i(ji,jj,jl) / MAX( a_i(ji,jj,jl) , zeps ) * zindb |
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258 | ht_s(ji,jj,jl) = v_s(ji,jj,jl) / MAX( a_i(ji,jj,jl) , zeps ) * zindb |
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259 | o_i(ji,jj,jl) = oa_i(ji,jj,jl) / MAX( a_i(ji,jj,jl) , zeps ) * zindb |
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260 | END DO |
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261 | END DO |
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262 | END DO |
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263 | |
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264 | IF ( ( num_sal .EQ. 2 ) .OR. ( num_sal .EQ. 4 ) )THEN |
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265 | |
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266 | DO jl = 1, jpl |
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267 | DO jj = 1, jpj |
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268 | DO ji = 1, jpi |
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269 | zindb = 1.0-MAX(0.0,SIGN(1.0,-a_i(ji,jj,jl))) !0 if no ice and 1 if yes |
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270 | sm_i(ji,jj,jl) = smv_i(ji,jj,jl) / MAX(v_i(ji,jj,jl),zeps) * zindb |
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271 | END DO |
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272 | END DO |
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273 | END DO |
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274 | |
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275 | ENDIF |
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276 | |
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277 | ! salinity profile |
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278 | CALL lim_var_salprof |
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279 | |
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280 | !------------------- |
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281 | ! Ice temperatures |
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282 | !------------------- |
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283 | DO jl = 1, jpl |
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284 | DO jk = 1, nlay_i |
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285 | DO jj = 1, jpj |
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286 | DO ji = 1, jpi |
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287 | !Energy of melting q(S,T) [J.m-3] |
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288 | zq_i = e_i(ji,jj,jk,jl) / area(ji,jj) / & |
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289 | MAX( v_i(ji,jj,jl) , epsi06 ) * nlay_i |
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290 | ! zindb = 0 if no ice and 1 if yes |
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291 | zindb = 1.0 - MAX( 0.0 , SIGN( 1.0 , - v_i(ji,jj,jl) ) ) |
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292 | !convert units ! very important that this line is here |
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293 | zq_i = zq_i * unit_fac * zindb |
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294 | !Ice layer melt temperature |
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295 | ztmelts = -tmut*s_i(ji,jj,jk,jl) + rtt |
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296 | !Conversion q(S,T) -> T (second order equation) |
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297 | zaaa = cpic |
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298 | zbbb = ( rcp - cpic ) * ( ztmelts - rtt ) + & |
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299 | zq_i / rhoic - lfus |
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300 | zccc = lfus * (ztmelts-rtt) |
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301 | zdiscrim = SQRT( MAX(zbbb*zbbb - 4.0*zaaa*zccc,0.0) ) |
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302 | t_i(ji,jj,jk,jl) = rtt + zindb *( - zbbb - zdiscrim ) / & |
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303 | ( 2.0 *zaaa ) |
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304 | t_i(ji,jj,jk,jl) = MIN( rtt, MAX(173.15, t_i(ji,jj,jk,jl) ) ) |
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305 | END DO |
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306 | END DO |
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307 | END DO |
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308 | END DO |
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309 | |
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310 | !-------------------- |
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311 | ! Snow temperatures |
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312 | !-------------------- |
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313 | zfac1 = 1. / ( rhosn * cpic ) |
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314 | zfac2 = lfus / cpic |
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315 | DO jl = 1, jpl |
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316 | DO jk = 1, nlay_s |
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317 | DO jj = 1, jpj |
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318 | DO ji = 1, jpi |
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319 | !Energy of melting q(S,T) [J.m-3] |
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320 | zq_s = e_s(ji,jj,jk,jl) / area(ji,jj) / & |
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321 | MAX( v_s(ji,jj,jl) , epsi06 ) * nlay_s |
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322 | ! zindb = 0 if no ice and 1 if yes |
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323 | zindb = 1.0 - MAX( 0.0 , SIGN( 1.0 , - v_s(ji,jj,jl) ) ) |
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324 | !convert units ! very important that this line is here |
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325 | zq_s = zq_s * unit_fac * zindb |
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326 | t_s(ji,jj,jk,jl) = rtt + zindb * ( - zfac1 * zq_s + zfac2 ) |
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327 | t_s(ji,jj,jk,jl) = MIN( rtt, MAX(173.15, t_s(ji,jj,jk,jl) ) ) |
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328 | |
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329 | END DO |
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330 | END DO |
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331 | END DO |
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332 | END DO |
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333 | |
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334 | !------------------- |
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335 | ! Mean temperature |
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336 | !------------------- |
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337 | tm_i(:,:) = 0.0 |
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338 | DO jl = 1, jpl |
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339 | DO jk = 1, nlay_i |
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340 | DO jj = 1, jpj |
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341 | DO ji = 1, jpi |
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342 | zindb = 1.0-MAX(0.0,SIGN(1.0,-a_i(ji,jj,jl))) |
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343 | zindb = zindb*1.0-MAX(0.0,SIGN(1.0,-v_i(ji,jj,jl))) |
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344 | tm_i(ji,jj) = tm_i(ji,jj) + t_i(ji,jj,jk,jl)*v_i(ji,jj,jl) / & |
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345 | REAL(nlay_i) / MAX( vt_i(ji,jj) , zeps ) |
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346 | END DO |
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347 | END DO |
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348 | END DO |
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349 | END DO |
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350 | |
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351 | END SUBROUTINE lim_var_glo2eqv |
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352 | |
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353 | !=============================================================================== |
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354 | |
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355 | SUBROUTINE lim_var_eqv2glo |
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356 | !!------------------------------------------------------------------ |
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357 | !! *** ROUTINE lim_var_eqv2glo ***' |
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358 | !! ** Purpose : |
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359 | !! This routine computes global variables as function of |
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360 | !! equivalent variables |
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361 | !! i.e. it turns VEQV into VGLO |
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362 | !! ** Method : |
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363 | !! |
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364 | !! ** Arguments : |
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365 | !! |
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366 | !! ** Inputs / Ouputs : (global commons) |
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367 | !! |
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368 | !! ** External : |
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369 | !! |
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370 | !! ** References : |
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371 | !! |
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372 | !! ** History : |
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373 | !! (01-2006) Martin Vancoppenolle, UCL-ASTR |
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374 | !! Take it easy man |
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375 | !! Life is just a simple game, between |
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376 | !! ups / and downs \ :@) |
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377 | !! |
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378 | !!------------------------------------------------------------------ |
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379 | !! * Arguments |
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380 | |
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381 | !! * Local variables |
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382 | INTEGER :: ji, & ! spatial dummy loop index |
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383 | jj, & ! spatial dummy loop index |
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384 | jk, & ! vertical layering dummy loop index |
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385 | jl, & ! ice category dummy loop index |
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386 | jm, & ! ice types dummy loop index |
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387 | index |
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388 | |
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389 | REAL :: zq_i, zaaa, zbbb, zccc, zdiscrim, & |
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390 | ztmelts |
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391 | |
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392 | REAL :: zeps |
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393 | |
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394 | !Ice specific heat, massive latent heat |
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395 | zeps = 1.0e-10 |
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396 | |
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397 | !!-- End of declarations |
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398 | !!------------------------------------------------------------------------------ |
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399 | |
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400 | ! IF (lwp) THEN |
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401 | ! WRITE(numout,*) |
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402 | ! WRITE(numout,*) 'lim_var_eqv2glo : transform equivalent variables into global ice variables ' |
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403 | ! WRITE(numout,*) '~~~~~~~~~~~~~~~' |
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404 | ! ENDIF |
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405 | |
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406 | v_i(:,:,:) = ht_i(:,:,:) * a_i(:,:,:) |
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407 | v_s(:,:,:) = ht_s(:,:,:) * a_i(:,:,:) |
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408 | smv_i(:,:,:) = sm_i(:,:,:) * v_i(:,:,:) |
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409 | oa_i (:,:,:) = o_i (:,:,:) * a_i(:,:,:) |
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410 | |
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411 | ! DO jl = 1, jpl |
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412 | ! DO jk = 1, nlay_i |
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413 | ! DO jj = 1, jpj |
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414 | ! DO ji = 1, jpi |
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415 | ! ! heat content per unit volume |
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416 | ! e_i(ji,jj,jk,jl) = zidto * rhoic * & |
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417 | ! ( cpic * ( ztmelts - t_i(ji,jj,jk,jl) ) & |
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418 | ! + lfus * ( 1.0 - (ztmelts-rtt) / MIN((t_i(ji,jj,jk,jl)-rtt),-zeps) ) & |
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419 | ! - rcp * ( ztmelts - rtt ) & |
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420 | ! ) |
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421 | |
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422 | ! ! Correct dimensions to avoid big values |
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423 | ! e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) / unit_fac |
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424 | |
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425 | ! ! Mutliply by ice volume, and divide by number of layers to get heat content in 10^9 J |
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426 | ! e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * & |
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427 | ! area(ji,jj) * a_i(ji,jj,jl) * ht_i(ji,jj,jl) / & |
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428 | ! FLOAT(nlay_i) |
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429 | |
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430 | ! END DO |
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431 | ! END DO |
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432 | ! END DO |
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433 | ! END DO |
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434 | |
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435 | END SUBROUTINE lim_var_eqv2glo |
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436 | |
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437 | !=============================================================================== |
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438 | |
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439 | SUBROUTINE lim_var_salprof |
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440 | !!------------------------------------------------------------------ |
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441 | !! *** ROUTINE lim_var_salprof ***' |
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442 | !! ** Purpose : |
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443 | !! This routine computes salinity profile in function of |
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444 | !! bulk salinity |
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445 | !! |
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446 | !! ** Method : If bulk salinity greater than s_i_1, |
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447 | !! the profile is assumed to be constant (S_inf) |
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448 | !! If bulk salinity lower than s_i_0, |
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449 | !! the profile is linear with 0 at the surface (S_zero) |
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450 | !! If it is between s_i_0 and s_i_1, it is a |
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451 | !! alpha-weighted linear combination of s_inf and s_zero |
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452 | !! |
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453 | !! ** References : Vancoppenolle et al., 2007 (in preparation) |
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454 | !! |
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455 | !! ** History : |
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456 | !! (08-2006) Martin Vancoppenolle, UCL-ASTR |
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457 | !! Take it easy man |
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458 | !! Life is just a simple game, between ups |
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459 | !! / and downs \ :@) |
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460 | !! |
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461 | !!------------------------------------------------------------------ |
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462 | !! * Arguments |
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463 | |
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464 | !! * Local variables |
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465 | INTEGER :: & |
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466 | ji , & !: spatial dummy loop index |
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467 | jj , & !: spatial dummy loop index |
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468 | jk , & !: vertical layering dummy loop index |
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469 | jl !: ice category dummy loop index |
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470 | |
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471 | REAL(wp) :: & |
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472 | dummy_fac0 , & !: dummy factor used in computations |
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473 | dummy_fac1 , & !: dummy factor used in computations |
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474 | dummy_fac , & !: dummy factor used in computations |
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475 | zind0 , & !: switch, = 1 if sm_i lt s_i_0 |
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476 | zind01 , & !: switch, = 1 if sm_i between s_i_0 and s_i_1 |
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477 | zindbal , & !: switch, = 1, if 2*sm_i gt sss_io |
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478 | zargtemp !: dummy factor |
---|
479 | |
---|
480 | REAL(wp), DIMENSION(nlay_i) :: & |
---|
481 | zs_zero !: linear salinity profile for salinities under |
---|
482 | !: s_i_0 |
---|
483 | |
---|
484 | REAL(wp), DIMENSION(jpi,jpj,jpl) :: & |
---|
485 | z_slope_s , & !: slope of the salinity profile |
---|
486 | zalpha !: weight factor for s between s_i_0 and s_i_1 |
---|
487 | |
---|
488 | !!-- End of declarations |
---|
489 | !!------------------------------------------------------------------------------ |
---|
490 | |
---|
491 | !--------------------------------------- |
---|
492 | ! Vertically constant, constant in time |
---|
493 | !--------------------------------------- |
---|
494 | |
---|
495 | IF ( num_sal .EQ. 1 ) THEN |
---|
496 | |
---|
497 | s_i(:,:,:,:) = bulk_sal |
---|
498 | |
---|
499 | ENDIF |
---|
500 | |
---|
501 | !----------------------------------- |
---|
502 | ! Salinity profile, varying in time |
---|
503 | !----------------------------------- |
---|
504 | |
---|
505 | IF ( ( num_sal .EQ. 2 ) .OR. ( num_sal .EQ. 4 ) )THEN |
---|
506 | |
---|
507 | DO jk = 1, nlay_i |
---|
508 | s_i(:,:,jk,:) = sm_i(:,:,:) |
---|
509 | END DO ! jk |
---|
510 | |
---|
511 | ! Slope of the linear profile zs_zero |
---|
512 | !------------------------------------- |
---|
513 | DO jl = 1, jpl |
---|
514 | DO jj = 1, jpj |
---|
515 | DO ji = 1, jpi |
---|
516 | z_slope_s(ji,jj,jl) = 2.0 * sm_i(ji,jj,jl) / MAX( 0.01 & |
---|
517 | , ht_i(ji,jj,jl) ) |
---|
518 | END DO ! ji |
---|
519 | END DO ! jj |
---|
520 | END DO ! jl |
---|
521 | |
---|
522 | ! Weighting factor between zs_zero and zs_inf |
---|
523 | !--------------------------------------------- |
---|
524 | dummy_fac0 = 1. / ( ( s_i_0 - s_i_1 ) ) |
---|
525 | dummy_fac1 = s_i_1 / ( s_i_1 - s_i_0 ) |
---|
526 | |
---|
527 | zalpha(:,:,:) = 0.0 |
---|
528 | |
---|
529 | DO jl = 1, jpl |
---|
530 | DO jj = 1, jpj |
---|
531 | DO ji = 1, jpi |
---|
532 | ! zind0 = 1 if sm_i le s_i_0 and 0 otherwise |
---|
533 | zind0 = MAX( 0.0 , SIGN( 1.0 , s_i_0 - sm_i(ji,jj,jl) ) ) |
---|
534 | ! zind01 = 1 if sm_i is between s_i_0 and s_i_1 and 0 othws |
---|
535 | zind01 = ( 1.0 - zind0 ) * & |
---|
536 | MAX( 0.0 , SIGN( 1.0 , s_i_1 - sm_i(ji,jj,jl) ) ) |
---|
537 | ! If 2.sm_i GE sss_io then zindbal = 1 |
---|
538 | zindbal = MAX( 0.0 , SIGN( 1.0 , 2. * sm_i(ji,jj,jl) - & |
---|
539 | sss_io(ji,jj) ) ) |
---|
540 | zalpha(ji,jj,jl) = zind0 * 1.0 & |
---|
541 | + zind01 * ( sm_i(ji,jj,jl) * dummy_fac0 + & |
---|
542 | dummy_fac1 ) |
---|
543 | zalpha(ji,jj,jl) = zalpha(ji,jj,jl) * ( 1.0 - zindbal ) |
---|
544 | END DO |
---|
545 | END DO |
---|
546 | END DO |
---|
547 | |
---|
548 | ! Computation of the profile |
---|
549 | !---------------------------- |
---|
550 | dummy_fac = 1. / nlay_i |
---|
551 | |
---|
552 | DO jl = 1, jpl |
---|
553 | DO jk = 1, nlay_i |
---|
554 | DO jj = 1, jpj |
---|
555 | DO ji = 1, jpi |
---|
556 | ! linear profile with 0 at the surface |
---|
557 | zs_zero(jk) = z_slope_s(ji,jj,jl) * ( jk - 1./2. ) * & |
---|
558 | ht_i(ji,jj,jl) * dummy_fac |
---|
559 | ! weighting the profile |
---|
560 | s_i(ji,jj,jk,jl) = zalpha(ji,jj,jl) * zs_zero(jk) + & |
---|
561 | ( 1.0 - zalpha(ji,jj,jl) ) * sm_i(ji,jj,jl) |
---|
562 | END DO ! ji |
---|
563 | END DO ! jj |
---|
564 | END DO ! jk |
---|
565 | END DO ! jl |
---|
566 | |
---|
567 | ENDIF ! num_sal |
---|
568 | |
---|
569 | !------------------------------------------------------- |
---|
570 | ! Vertically varying salinity profile, constant in time |
---|
571 | !------------------------------------------------------- |
---|
572 | ! Schwarzacher (1959) multiyear salinity profile (mean = 2.30) |
---|
573 | |
---|
574 | IF ( num_sal .EQ. 3 ) THEN |
---|
575 | |
---|
576 | sm_i(:,:,:) = 2.30 |
---|
577 | |
---|
578 | DO jl = 1, jpl |
---|
579 | DO jk = 1, nlay_i |
---|
580 | DO jj = 1, jpj |
---|
581 | DO ji = 1, jpi |
---|
582 | zargtemp = ( jk - 0.5 ) / nlay_i |
---|
583 | s_i(ji,jj,jk,jl) = 1.6 - 1.6 * COS( 3.14169265 * & |
---|
584 | ( zargtemp**(0.407/ & |
---|
585 | ( 0.573 + zargtemp ) ) ) ) |
---|
586 | END DO ! ji |
---|
587 | END DO ! jj |
---|
588 | END DO ! jk |
---|
589 | END DO ! jl |
---|
590 | |
---|
591 | ENDIF ! num_sal |
---|
592 | |
---|
593 | END SUBROUTINE lim_var_salprof |
---|
594 | |
---|
595 | !=============================================================================== |
---|
596 | |
---|
597 | SUBROUTINE lim_var_bv |
---|
598 | !!------------------------------------------------------------------ |
---|
599 | !! *** ROUTINE lim_var_bv ***' |
---|
600 | !! ** Purpose : |
---|
601 | !! This routine computes mean brine volume (%) in sea ice |
---|
602 | !! |
---|
603 | !! ** Method : e = - 0.054 * S (ppt) / T (C) |
---|
604 | !! |
---|
605 | !! ** Arguments : |
---|
606 | !! |
---|
607 | !! ** Inputs / Ouputs : (global commons) |
---|
608 | !! |
---|
609 | !! ** External : |
---|
610 | !! |
---|
611 | !! ** References : Vancoppenolle et al., JGR, 2007 |
---|
612 | !! |
---|
613 | !! ** History : |
---|
614 | !! (08-2006) Martin Vancoppenolle, UCL-ASTR |
---|
615 | !! |
---|
616 | !!------------------------------------------------------------------ |
---|
617 | !! * Arguments |
---|
618 | |
---|
619 | !! * Local variables |
---|
620 | INTEGER :: ji, & ! spatial dummy loop index |
---|
621 | jj, & ! spatial dummy loop index |
---|
622 | jk, & ! vertical layering dummy loop index |
---|
623 | jl ! ice category dummy loop index |
---|
624 | |
---|
625 | REAL :: zbvi, & ! brine volume for a single ice category |
---|
626 | zeps, & ! very small value |
---|
627 | zindb ! is there ice or not |
---|
628 | |
---|
629 | !!-- End of declarations |
---|
630 | !!------------------------------------------------------------------------------ |
---|
631 | |
---|
632 | zeps = 1.0e-13 |
---|
633 | bv_i(:,:) = 0.0 |
---|
634 | DO jl = 1, jpl |
---|
635 | DO jk = 1, nlay_i |
---|
636 | DO jj = 1, jpj |
---|
637 | DO ji = 1, jpi |
---|
638 | zindb = 1.0-MAX(0.0,SIGN(1.0,-a_i(ji,jj,jl))) !0 if no ice and 1 if yes |
---|
639 | zbvi = - zindb * tmut *s_i(ji,jj,jk,jl) / & |
---|
640 | MIN( t_i(ji,jj,jk,jl) - 273.15 , zeps ) & |
---|
641 | * v_i(ji,jj,jl) / REAL(nlay_i) |
---|
642 | bv_i(ji,jj) = bv_i(ji,jj) + zbvi & |
---|
643 | / MAX( vt_i(ji,jj) , zeps ) |
---|
644 | END DO |
---|
645 | END DO |
---|
646 | END DO |
---|
647 | END DO |
---|
648 | |
---|
649 | END SUBROUTINE lim_var_bv |
---|
650 | |
---|
651 | !=============================================================================== |
---|
652 | |
---|
653 | SUBROUTINE lim_var_salprof1d(kideb,kiut) |
---|
654 | !!------------------------------------------------------------------- |
---|
655 | !! *** ROUTINE lim_thd_salprof1d *** |
---|
656 | !! |
---|
657 | !! ** Purpose : 1d computation of the sea ice salinity profile |
---|
658 | !! Works with 1d vectors and is used by thermodynamic |
---|
659 | !! modules |
---|
660 | !! |
---|
661 | !! history : |
---|
662 | !! 3.0 ! May 2007 M. Vancoppenolle Original code |
---|
663 | !!------------------------------------------------------------------- |
---|
664 | INTEGER, INTENT(in) :: & |
---|
665 | kideb, kiut ! thickness category index |
---|
666 | |
---|
667 | INTEGER :: & |
---|
668 | ji, jk, & ! geographic and layer index |
---|
669 | zji, zjj |
---|
670 | |
---|
671 | REAL(wp) :: & |
---|
672 | dummy_fac0, & ! dummy factors |
---|
673 | dummy_fac1, & |
---|
674 | dummy_fac2, & |
---|
675 | zalpha , & ! weighting factor |
---|
676 | zind0 , & ! switches as in limvar |
---|
677 | zind01 , & ! switch |
---|
678 | zindbal , & ! switch if in freshwater area |
---|
679 | zargtemp |
---|
680 | |
---|
681 | REAL(wp), DIMENSION(jpij) :: & |
---|
682 | z_slope_s |
---|
683 | |
---|
684 | REAL(wp), DIMENSION(jpij,jkmax) :: & |
---|
685 | zs_zero |
---|
686 | !!------------------------------------------------------------------- |
---|
687 | |
---|
688 | !--------------------------------------- |
---|
689 | ! Vertically constant, constant in time |
---|
690 | !--------------------------------------- |
---|
691 | |
---|
692 | IF ( num_sal .EQ. 1 ) THEN |
---|
693 | |
---|
694 | s_i_b(:,:) = bulk_sal |
---|
695 | |
---|
696 | ENDIF |
---|
697 | |
---|
698 | !------------------------------------------------------ |
---|
699 | ! Vertically varying salinity profile, varying in time |
---|
700 | !------------------------------------------------------ |
---|
701 | |
---|
702 | IF ( ( num_sal .EQ. 2 ) .OR. ( num_sal .EQ. 4 ) ) THEN |
---|
703 | |
---|
704 | ! Slope of the linear profile zs_zero |
---|
705 | !------------------------------------- |
---|
706 | DO ji = kideb, kiut |
---|
707 | z_slope_s(ji) = 2.0 * sm_i_b(ji) / MAX( 0.01 & |
---|
708 | , ht_i_b(ji) ) |
---|
709 | END DO ! ji |
---|
710 | |
---|
711 | ! Weighting factor between zs_zero and zs_inf |
---|
712 | !--------------------------------------------- |
---|
713 | dummy_fac0 = 1. / ( ( s_i_0 - s_i_1 ) ) |
---|
714 | dummy_fac1 = s_i_1 / ( s_i_1 - s_i_0 ) |
---|
715 | dummy_fac2 = 1. / nlay_i |
---|
716 | |
---|
717 | DO jk = 1, nlay_i |
---|
718 | DO ji = kideb, kiut |
---|
719 | zji = MOD( npb(ji) - 1, jpi ) + 1 |
---|
720 | zjj = ( npb(ji) - 1 ) / jpi + 1 |
---|
721 | zalpha = 0.0 |
---|
722 | ! zind0 = 1 if sm_i le s_i_0 and 0 otherwise |
---|
723 | zind0 = MAX( 0.0 , SIGN( 1.0 , s_i_0 - sm_i_b(ji) ) ) |
---|
724 | ! zind01 = 1 if sm_i is between s_i_0 and s_i_1 and 0 othws |
---|
725 | zind01 = ( 1.0 - zind0 ) * & |
---|
726 | MAX( 0.0 , SIGN( 1.0 , s_i_1 - sm_i_b(ji) ) ) |
---|
727 | ! if 2.sm_i GE sss_io then zindbal = 1 |
---|
728 | zindbal = MAX( 0.0 , SIGN( 1.0 , 2. * sm_i_b(ji) - & |
---|
729 | sss_io(zji,zjj) ) ) |
---|
730 | |
---|
731 | zalpha = zind0 * 1.0 & |
---|
732 | + zind01 * ( sm_i_b(ji) * dummy_fac0 + & |
---|
733 | dummy_fac1 ) |
---|
734 | zalpha = zalpha * ( 1.0 - zindbal ) |
---|
735 | |
---|
736 | zs_zero(ji,jk) = z_slope_s(ji) * ( jk - 1./2. ) * & |
---|
737 | ht_i_b(ji) * dummy_fac2 |
---|
738 | ! weighting the profile |
---|
739 | s_i_b(ji,jk) = zalpha * zs_zero(ji,jk) + & |
---|
740 | ( 1.0 - zalpha ) * sm_i_b(ji) |
---|
741 | END DO ! ji |
---|
742 | END DO ! jk |
---|
743 | |
---|
744 | ENDIF ! num_sal |
---|
745 | |
---|
746 | !------------------------------------------------------- |
---|
747 | ! Vertically varying salinity profile, constant in time |
---|
748 | !------------------------------------------------------- |
---|
749 | ! Schwarzacher (1959) multiyear salinity profile (mean = 2.30) |
---|
750 | |
---|
751 | IF ( num_sal .EQ. 3 ) THEN |
---|
752 | |
---|
753 | sm_i_b(:) = 2.30 |
---|
754 | |
---|
755 | DO ji = kideb, kiut |
---|
756 | DO jk = 1, nlay_i |
---|
757 | zargtemp = ( jk - 0.5 ) / nlay_i |
---|
758 | s_i_b(ji,jk) = 1.6 - 1.6*cos(3.14169265*(zargtemp**(0.407/ & |
---|
759 | (0.573+zargtemp)))) |
---|
760 | END DO ! jk |
---|
761 | END DO ! ji |
---|
762 | |
---|
763 | ENDIF ! num_sal |
---|
764 | |
---|
765 | END SUBROUTINE lim_var_salprof1d |
---|
766 | |
---|
767 | !=============================================================================== |
---|
768 | |
---|
769 | #else |
---|
770 | !!====================================================================== |
---|
771 | !! *** MODULE limvar *** |
---|
772 | !! no sea ice model |
---|
773 | !!====================================================================== |
---|
774 | CONTAINS |
---|
775 | SUBROUTINE lim_var_agg ! Empty routines |
---|
776 | END SUBROUTINE lim_var_agg |
---|
777 | SUBROUTINE lim_var_glo2eqv ! Empty routines |
---|
778 | END SUBROUTINE lim_var_glo2eqv |
---|
779 | SUBROUTINE lim_var_eqv2glo ! Empty routines |
---|
780 | END SUBROUTINE lim_var_eqv2glo |
---|
781 | SUBROUTINE lim_var_salprof ! Empty routines |
---|
782 | END SUBROUTINE lim_var_salprof |
---|
783 | SUBROUTINE lim_var_bv ! Emtpy routines |
---|
784 | END SUBROUTINE lim_var_bv |
---|
785 | SUBROUTINE lim_var_salprof1d ! Emtpy routines |
---|
786 | END SUBROUTINE lim_var_salprof1d |
---|
787 | |
---|
788 | #endif |
---|
789 | END MODULE limvar |
---|