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 : PISCES MODEL |
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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 INPUT : |
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15 | CC ----- |
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16 | CC argument |
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17 | CC None |
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18 | CC common |
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19 | CC all the common defined in opa |
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20 | CC |
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21 | CC |
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22 | CC OUTPUT : : no |
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23 | CC ------ |
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24 | CC |
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25 | CC MODIFICATIONS: |
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26 | CC -------------- |
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27 | CC original : O. Aumont (2004) |
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28 | CC---------------------------------------------------------------------- |
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29 | CC parameters and commons |
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30 | CC ====================== |
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31 | CDIR$ NOLIST |
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32 | USE oce_trc |
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33 | USE trp_trc |
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34 | USE sms |
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35 | IMPLICIT NONE |
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36 | #include "domzgr_substitute.h90" |
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37 | CDIR$ LIST |
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38 | CC---------------------------------------------------------------------- |
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39 | CC local declarations |
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40 | CC ================== |
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41 | INTEGER ji, jj, jk, mrgb |
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42 | REAL xchl,ekg(jpi,jpj,jpk),ekr(jpi,jpj,jpk) |
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43 | REAL ekb(jpi,jpj,jpk) |
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44 | REAL parlux,e1(jpi,jpj,jpk),e2(jpi,jpj,jpk),e3(jpi,jpj,jpk) |
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45 | REAL zdepmoy(jpi,jpj) |
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46 | REAL etmp(jpi,jpj) |
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47 | REAL zrlight,zblight,zglight |
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48 | C |
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49 | C Initialisation of variables used to compute PAR |
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50 | C ----------------------------------------------- |
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51 | C |
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52 | e1 = 0. |
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53 | e2 = 0. |
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54 | e3 = 0. |
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55 | etot = 0. |
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56 | parlux = 0.43/3. |
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57 | |
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58 | DO jk=1,jpkm1 |
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59 | DO jj=1,jpj |
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60 | DO ji=1,jpi |
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61 | C |
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62 | C Separation in three light bands: red, green, blue |
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63 | C ------------------------------------------------- |
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64 | C |
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65 | xchl=(trn(ji,jj,jk,jpnch)+trn(ji,jj,jk,jpdch)+rtrn)*1.E6 |
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66 | xchl=max(0.03,xchl) |
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67 | xchl=min(10.,xchl) |
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68 | |
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69 | mrgb = int(41+20.*log10(xchl)+rtrn) |
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70 | |
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71 | ekb(ji,jj,jk)=xkrgb(1,mrgb) |
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72 | ekg(ji,jj,jk)=xkrgb(2,mrgb) |
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73 | ekr(ji,jj,jk)=xkrgb(3,mrgb) |
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74 | C |
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75 | END DO |
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76 | END DO |
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77 | END DO |
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78 | C |
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79 | DO jj = 1,jpj |
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80 | DO ji = 1,jpi |
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81 | C |
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82 | C Separation in three light bands: red, green, blue |
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83 | C ------------------------------------------------- |
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84 | C |
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85 | zblight=0.5*ekb(ji,jj,1)*fse3t(ji,jj,1) |
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86 | zglight=0.5*ekg(ji,jj,1)*fse3t(ji,jj,1) |
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87 | zrlight=0.5*ekr(ji,jj,1)*fse3t(ji,jj,1) |
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88 | C |
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89 | e1(ji,jj,1) = parlux*qsr(ji,jj)*exp(-zblight) |
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90 | e2(ji,jj,1) = parlux*qsr(ji,jj)*exp(-zglight) |
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91 | e3(ji,jj,1) = parlux*qsr(ji,jj)*exp(-zrlight) |
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92 | C |
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93 | END DO |
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94 | END DO |
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95 | |
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96 | |
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97 | DO jk = 2,jpkm1 |
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98 | DO jj = 1,jpj |
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99 | DO ji = 1,jpi |
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100 | C |
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101 | C Separation in three light bands: red, green, blue |
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102 | C ------------------------------------------------- |
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103 | C |
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104 | zblight=0.5*(ekb(ji,jj,jk-1)*fse3t(ji,jj,jk-1) |
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105 | & +ekb(ji,jj,jk)*fse3t(ji,jj,jk)) |
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106 | zglight=0.5*(ekg(ji,jj,jk-1)*fse3t(ji,jj,jk-1) |
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107 | & +ekg(ji,jj,jk)*fse3t(ji,jj,jk)) |
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108 | zrlight=0.5*(ekr(ji,jj,jk-1)*fse3t(ji,jj,jk-1) |
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109 | & +ekr(ji,jj,jk)*fse3t(ji,jj,jk)) |
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110 | C |
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111 | e1(ji,jj,jk) = e1(ji,jj,jk-1)*exp(-zblight) |
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112 | e2(ji,jj,jk) = e2(ji,jj,jk-1)*exp(-zglight) |
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113 | e3(ji,jj,jk) = e3(ji,jj,jk-1)*exp(-zrlight) |
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114 | C |
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115 | END DO |
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116 | END DO |
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117 | END DO |
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118 | C |
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119 | etot(:,:,:) = e1(:,:,:)+e2(:,:,:)+e3(:,:,:) |
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120 | C |
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121 | C Computation of the euphotic depth |
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122 | C --------------------------------- |
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123 | C |
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124 | zmeu(:,:) = 300. |
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125 | |
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126 | DO jk = 2,jpkm1 |
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127 | DO jj = 1,jpj |
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128 | DO ji = 1,jpi |
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129 | IF (etot(ji,jj,jk).GE.0.0043*qsr(ji,jj)) THEN |
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130 | zmeu(ji,jj) = fsdepw(ji,jj,jk+1) |
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131 | ENDIF |
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132 | END DO |
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133 | END DO |
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134 | END DO |
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135 | C |
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136 | zmeu(:,:)=min(300.,zmeu(:,:)) |
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137 | C |
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138 | C Computation of the mean light over the mixed layer depth |
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139 | C -------------------------------------------------------- |
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140 | C |
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141 | zdepmoy = 0 |
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142 | etmp = 0. |
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143 | emoy = 0. |
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144 | |
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145 | DO jk = 1,jpkm1 |
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146 | DO jj = 1,jpj |
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147 | DO ji = 1,jpi |
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148 | if (fsdepw(ji,jj,jk+1).le.hmld(ji,jj)) then |
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149 | etmp(ji,jj) = etmp(ji,jj)+etot(ji,jj,jk)*fse3t(ji,jj,jk) |
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150 | zdepmoy(ji,jj)=zdepmoy(ji,jj)+fse3t(ji,jj,jk) |
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151 | endif |
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152 | END DO |
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153 | END DO |
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154 | END DO |
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155 | |
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156 | emoy(:,:,:) = etot(:,:,:) |
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157 | |
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158 | DO jk = 1,jpkm1 |
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159 | DO jj = 1,jpj |
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160 | DO ji = 1,jpi |
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161 | IF (fsdepw(ji,jj,jk+1).LE.hmld(ji,jj)) THEN |
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162 | emoy(ji,jj,jk) = etmp(ji,jj)/(zdepmoy(ji,jj)+rtrn) |
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163 | ENDIF |
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164 | END DO |
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165 | END DO |
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166 | END DO |
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167 | |
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168 | # if defined key_trc_diaadd |
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169 | trc2d(:,:,11) = zmeu(:,:) |
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170 | # endif |
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171 | C |
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172 | #endif |
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173 | RETURN |
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174 | END |
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