1 | CDIR$ LIST |
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2 | SUBROUTINE p4zopt |
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3 | #if defined key_passivetrc && defined key_trc_pisces |
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4 | CCC--------------------------------------------------------------------- |
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5 | CCC |
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6 | CCC ROUTINE p4zopt |
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7 | CCC ***************** |
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8 | CCC |
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9 | CCC PURPOSE : |
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10 | CCC --------- |
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11 | CCC Compute the light availability in the water column |
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12 | CCC depending on the depth and the chlorophyll concentration |
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13 | CCC |
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14 | CC METHOD : |
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15 | CC ------- |
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16 | CC |
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17 | CC |
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18 | CC INPUT : |
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19 | CC ----- |
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20 | CC argument |
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21 | CC None |
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22 | CC common |
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23 | CC all the common defined in opa |
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24 | CC |
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25 | CC |
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26 | CC OUTPUT : : no |
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27 | CC ------ |
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28 | CC |
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29 | CC WORKSPACE : |
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30 | CC --------- |
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31 | CC |
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32 | CC EXTERNAL : |
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33 | CC -------- |
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34 | CC |
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35 | CC MODIFICATIONS: |
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36 | CC -------------- |
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37 | CC original : O. Aumont (2002) |
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38 | CC---------------------------------------------------------------------- |
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39 | CC parameters and commons |
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40 | CC ====================== |
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41 | USE oce_trc |
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42 | USE trp_trc |
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43 | USE sms |
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44 | #include "domzgr_substitute.h90" |
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45 | CC---------------------------------------------------------------------- |
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46 | CC local declarations |
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47 | CC ================== |
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48 | INTEGER ji, jj, jk, kmoy(jpi,jpj), mrgb |
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49 | REAL xchl,ekg,ekr,ekb,xlim1,xlim2,xlim3,xlim4 |
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50 | REAL ekb1,ekr1,ekg1 |
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51 | REAL parlux,e1(jpi,jpj,jpk),e2(jpi,jpj,jpk),e3(jpi,jpj,jpk) |
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52 | REAL zdepmoy(jpi,jpj) |
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53 | REAL e3lum(jpi,jpj,jpk),e4lum(jpi,jpj,jpk) |
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54 | REAL e5lum(jpi,jpj,jpk),etmp(jpi,jpj) |
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55 | REAL e6lum(jpi,jpj,jpk) |
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56 | |
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57 | C Initialisation of variables used to compute PAR |
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58 | C ----------------------------------------------- |
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59 | C |
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60 | e1 = 0. |
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61 | e2 = 0. |
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62 | e3 = 0. |
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63 | e3lum = 0. |
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64 | e4lum = 0. |
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65 | e5lum = 0. |
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66 | e6lum = 0. |
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67 | etot = 0. |
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68 | etot3 = 0. |
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69 | parlux = 0.43/3. |
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70 | C |
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71 | DO jj = 1,jpj |
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72 | DO ji = 1,jpi |
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73 | C |
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74 | C Computation of a variable par fraction |
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75 | C |
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76 | e1(ji,jj,1)=parlux*qsr(ji,jj) |
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77 | e2(ji,jj,1)=parlux*qsr(ji,jj) |
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78 | e3(ji,jj,1)=parlux*qsr(ji,jj) |
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79 | e3lum(ji,jj,1)=parlux*qsr(ji,jj) |
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80 | e4lum(ji,jj,1)=parlux*qsr(ji,jj) |
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81 | e5lum(ji,jj,1)=parlux*qsr(ji,jj) |
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82 | e6lum(ji,jj,1)=1.-3.*parlux*qsr(ji,jj) |
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83 | C |
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84 | END DO |
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85 | END DO |
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86 | |
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87 | C |
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88 | C Tuning of the iron concentration to a minimum |
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89 | C level that is set to the detection limit |
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90 | C ------------------------------------- |
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91 | C |
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92 | trn(:,:,:,jpfer)=max(trn(:,:,:,jpfer),1.E-11) |
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93 | C |
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94 | DO jk = 1,jpkm1 |
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95 | DO jj = 1,jpj |
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96 | DO ji = 1,jpi |
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97 | C |
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98 | C Separation in two light bands: red and green |
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99 | C -------------------------------------------- |
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100 | C |
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101 | xchl=(trn(ji,jj,jk,jpnch)+trn(ji,jj,jk,jpdch)+rtrn)*1.E6 |
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102 | xchl=max(0.01,xchl) |
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103 | xchl=min(10.,xchl) |
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104 | |
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105 | mrgb = int(41+20.*log10(xchl)+rtrn) |
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106 | |
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107 | ekb=xkrgb(1,mrgb) |
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108 | ekg=xkrgb(2,mrgb) |
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109 | ekr=xkrgb(3,mrgb) |
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110 | |
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111 | e1(ji,jj,jk+1) = e1(ji,jj,jk)*exp(-ekb*fse3t(ji,jj,jk)/2.) |
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112 | e2(ji,jj,jk+1) = e2(ji,jj,jk)*exp(-ekg*fse3t(ji,jj,jk)/2.) |
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113 | e3(ji,jj,jk+1) = e3(ji,jj,jk)*exp(-ekr*fse3t(ji,jj,jk)/2.) |
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114 | |
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115 | |
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116 | etot(ji,jj,jk) = e1(ji,jj,jk+1)+e2(ji,jj,jk+1)+e3(ji,jj,jk+1) |
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117 | C |
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118 | C Computation of irradiance below level T |
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119 | C --------------------------------------- |
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120 | C |
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121 | e1(ji,jj,jk+1) = e1(ji,jj,jk+1)*exp(-ekb*fse3t(ji,jj,jk)/2.) |
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122 | e2(ji,jj,jk+1) = e2(ji,jj,jk+1)*exp(-ekg*fse3t(ji,jj,jk)/2.) |
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123 | e3(ji,jj,jk+1) = e3(ji,jj,jk+1)*exp(-ekr*fse3t(ji,jj,jk)/2.) |
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124 | |
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125 | e3lum(ji,jj,jk+1) = e3lum(ji,jj,jk)*exp(-ekb*fse3t(ji,jj,jk)) |
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126 | e4lum(ji,jj,jk+1) = e4lum(ji,jj,jk)*exp(-ekg*fse3t(ji,jj,jk)) |
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127 | e5lum(ji,jj,jk+1) = e5lum(ji,jj,jk)*exp(-ekr*fse3t(ji,jj,jk)) |
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128 | e6lum(ji,jj,jk+1) = e6lum(ji,jj,jk)*exp(-fse3t(ji,jj,jk)/xsi1) |
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129 | C |
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130 | END DO |
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131 | END DO |
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132 | END DO |
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133 | |
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134 | C |
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135 | C modif pour le couplage avec la physique |
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136 | C |
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137 | etot3=e3lum+e4lum+e5lum+e6lum |
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138 | C |
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139 | DO jk = 1,jpkm1 |
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140 | DO jj = 1,jpj |
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141 | DO ji = 1,jpi |
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142 | C |
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143 | C Michaelis-Menten Limitation term for nutrients |
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144 | C Small flagellates |
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145 | C ----------------------------------------------- |
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146 | C |
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147 | xnanono3(ji,jj,jk)=trn(ji,jj,jk,jpno3)*concnnh4 |
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148 | & /(conc0*concnnh4+concnnh4*trn(ji,jj,jk,jpno3)+ |
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149 | & conc0*trn(ji,jj,jk,jpnh4)) |
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150 | xnanonh4(ji,jj,jk)=trn(ji,jj,jk,jpnh4)*conc0 |
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151 | & /(conc0*concnnh4+concnnh4*trn(ji,jj,jk,jpno3)+ |
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152 | & conc0*trn(ji,jj,jk,jpnh4)) |
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153 | xlim1=xnanono3(ji,jj,jk)+xnanonh4(ji,jj,jk) |
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154 | xlim2=trn(ji,jj,jk,jppo4)/(trn(ji,jj,jk,jppo4)+conc0) |
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155 | xlim3=trn(ji,jj,jk,jpfer)/(trn(ji,jj,jk,jpfer)+conc2) |
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156 | xlimphy(ji,jj,jk)=min(xlim1,xlim2,xlim3) |
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157 | xlim4=trn(ji,jj,jk,jpdoc)/(trn(ji,jj,jk,jpdoc)+xkdoc2) |
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158 | xlimbac(ji,jj,jk)=min(xlim1,xlim2,xlim3,xlim4) |
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159 | C |
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160 | END DO |
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161 | END DO |
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162 | END DO |
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163 | C |
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164 | DO jk = 1,jpkm1 |
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165 | DO jj = 1,jpj |
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166 | DO ji = 1,jpi |
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167 | C Diatoms |
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168 | C ------- |
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169 | xdiatno3(ji,jj,jk)=trn(ji,jj,jk,jpno3)*concdnh4 |
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170 | & /(conc1*concdnh4+concdnh4*trn(ji,jj,jk,jpno3)+ |
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171 | & conc1*trn(ji,jj,jk,jpnh4)) |
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172 | xdiatnh4(ji,jj,jk)=trn(ji,jj,jk,jpnh4)*conc1 |
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173 | & /(conc1*concdnh4+concdnh4*trn(ji,jj,jk,jpno3)+ |
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174 | & conc1*trn(ji,jj,jk,jpnh4)) |
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175 | |
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176 | xlim1=xdiatno3(ji,jj,jk)+xdiatnh4(ji,jj,jk) |
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177 | xlim2=trn(ji,jj,jk,jppo4)/(trn(ji,jj,jk,jppo4)+conc1) |
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178 | xlim3=trn(ji,jj,jk,jpsil)/(trn(ji,jj,jk,jpsil)+xksi(ji,jj)) |
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179 | xlim4=trn(ji,jj,jk,jpfer)/(trn(ji,jj,jk,jpfer)+conc3) |
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180 | xlimdia(ji,jj,jk)=min(xlim1,xlim2,xlim3,xlim4) |
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181 | C |
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182 | END DO |
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183 | END DO |
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184 | END DO |
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185 | C |
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186 | C Initialisation of the euphotic depth |
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187 | C ------------------------------------ |
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188 | C |
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189 | zmeu(:,:)=fsdept(:,:,jkopt+1) |
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190 | C |
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191 | C Computation of the euphotic depth |
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192 | C --------------------------------- |
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193 | C |
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194 | DO jk = 2,jkopt |
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195 | DO jj = 1,jpj |
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196 | DO ji = 1,jpi |
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197 | IF (etot(ji,jj,jk).GE.0.0043*qsr(ji,jj)) THEN |
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198 | zmeu(ji,jj) = fsdepw(ji,jj,jk+1) |
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199 | ENDIF |
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200 | END DO |
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201 | END DO |
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202 | END DO |
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203 | C |
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204 | C Computation of the mean light over the mixed layer depth |
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205 | C -------------------------------------------------------- |
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206 | C |
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207 | zdepmoy = 0 |
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208 | etmp = 0. |
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209 | emoy = 0. |
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210 | |
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211 | DO jk = 1,jpkm1 |
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212 | DO jj = 1,jpj |
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213 | DO ji = 1,jpi |
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214 | etmp(ji,jj) = etmp(ji,jj)+etot(ji,jj,jk) |
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215 | $ *fse3t(ji,jj,jk)* |
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216 | $ (0.5+sign(0.5,(hmld(ji,jj) |
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217 | $ -fsdept(ji,jj,jk)))) |
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218 | zdepmoy(ji,jj)=zdepmoy(ji,jj)+ |
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219 | $ fse3t(ji,jj,jk)* |
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220 | $ (0.5+sign(0.5,(hmld(ji,jj) |
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221 | $ -fsdept(ji,jj,jk)))) |
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222 | END DO |
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223 | END DO |
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224 | END DO |
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225 | |
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226 | emoy=etot |
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227 | |
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228 | DO jk=1,jpkm1 |
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229 | DO jj = 1,jpj |
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230 | DO ji = 1,jpi |
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231 | IF (fsdept(ji,jj,jk).LE.hmld(ji,jj)) THEN |
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232 | emoy(ji,jj,jk) = etmp(ji,jj)/(zdepmoy(ji,jj)+rtrn) |
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233 | ENDIF |
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234 | END DO |
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235 | END DO |
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236 | END DO |
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237 | |
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238 | # if defined key_trc_diaadd |
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239 | trc2d(:,:,11) = zmeu(:,:) |
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240 | # endif |
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241 | C |
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242 | #endif |
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243 | RETURN |
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244 | END |
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245 | |
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