1 | CDIR$ LIST |
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2 | SUBROUTINE p4zprod |
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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 p4zprod : 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 phytoplankton production depending on |
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12 | CCC light, temperature and nutrient availability |
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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 EXTERNAL : |
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26 | CC -------- |
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27 | CC p4zday |
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28 | CC |
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29 | CC MODIFICATIONS: |
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30 | CC -------------- |
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31 | CC original : O. Aumont (2004) |
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32 | CC---------------------------------------------------------------------- |
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33 | CC parameters and commons |
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34 | CC ====================== |
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35 | CDIR$ NOLIST |
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36 | USE oce_trc |
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37 | USE trp_trc |
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38 | USE sms |
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39 | IMPLICIT NONE |
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40 | CDIR$ LIST |
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41 | CC---------------------------------------------------------------------- |
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42 | CC local declarations |
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43 | CC ================== |
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44 | INTEGER ji, jj, jk |
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45 | REAL silfac,pislopen(jpi,jpj,jpk),pislope2n(jpi,jpj,jpk) |
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46 | REAL zmixnano,zmixdiat,zfact |
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47 | REAL prdiachl,prbiochl,silim,ztn,zadap,zadap2 |
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48 | REAL ysopt(jpi,jpj,jpk),pislopead(jpi,jpj,jpk) |
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49 | REAL prdia(jpi,jpj,jpk),prbio(jpi,jpj,jpk) |
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50 | REAL etot2(jpi,jpj,jpk),pislopead2(jpi,jpj,jpk) |
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51 | REAL silfac2,siborn,zprod |
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52 | C |
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53 | C Computation of the optimal production |
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54 | C ------------------------------------- |
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55 | C |
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56 | C |
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57 | prmax(:,:,:)=0.6/rjjss*tgfunc(:,:,:) |
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58 | # if defined key_off_degrad |
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59 | & *facvol(:,:,:) |
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60 | # endif |
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61 | C |
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62 | C Computation of the day length |
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63 | C ----------------------------- |
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64 | C |
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65 | call p4zday |
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66 | |
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67 | DO jk = 1,jkopt |
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68 | DO jj = 1,jpj |
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69 | DO ji = 1,jpi |
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70 | C |
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71 | C Computation of the P-I slope for nanos and diatoms |
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72 | C -------------------------------------------------- |
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73 | C |
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74 | ztn=max(0.,tn(ji,jj,jk)-15.) |
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75 | zadap=2.+3.*ztn/(2.+ztn) |
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76 | zadap2=2. |
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77 | |
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78 | zfact=exp(-0.21*emoy(ji,jj,jk)) |
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79 | |
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80 | pislopead(ji,jj,jk)=pislope*(1.+zadap*zfact) |
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81 | pislopead2(ji,jj,jk)=pislope2*(1.+zadap2*zfact) |
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82 | |
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83 | pislopen(ji,jj,jk)=pislopead(ji,jj,jk) |
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84 | & *trn(ji,jj,jk,jpnch)/(rtrn+trn(ji,jj,jk,jpphy)*12.) |
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85 | & /(prmax(ji,jj,jk)*rjjss*xlimphy(ji,jj,jk)+rtrn) |
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86 | |
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87 | pislope2n(ji,jj,jk)=pislopead2(ji,jj,jk) |
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88 | & *trn(ji,jj,jk,jpdch)/(rtrn+trn(ji,jj,jk,jpdia)*12.) |
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89 | & /(prmax(ji,jj,jk)*rjjss*xlimdia(ji,jj,jk)+rtrn) |
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90 | C |
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91 | END DO |
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92 | END DO |
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93 | END DO |
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94 | |
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95 | DO jk = 1,jkopt |
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96 | DO jj = 1,jpj |
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97 | DO ji = 1,jpi |
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98 | C |
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99 | C Computation of production function |
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100 | C ---------------------------------- |
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101 | C |
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102 | prbio(ji,jj,jk) = prmax(ji,jj,jk) |
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103 | & *(1.-exp(-pislopen(ji,jj,jk)*etot(ji,jj,jk))) |
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104 | prdia(ji,jj,jk) = prmax(ji,jj,jk) |
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105 | & *(1.-exp(-pislope2n(ji,jj,jk)*etot(ji,jj,jk))) |
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106 | |
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107 | END DO |
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108 | END DO |
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109 | END DO |
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110 | |
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111 | DO jk = 1,jkopt |
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112 | DO jj = 1,jpj |
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113 | DO ji = 1,jpi |
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114 | C |
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115 | C Si/C of diatoms |
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116 | C ------------------------ |
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117 | C Si/C increases with iron stress and silicate availability |
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118 | C Si/C is arbitrariliy increased for very high Si concentrations |
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119 | C to mimic the very high ratios observed in the Southern Ocean |
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120 | c (silpot2) |
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121 | C |
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122 | silim=min((1.-exp(-etot(ji,jj,jk)*pislope2n(ji,jj,jk))), |
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123 | & trn(ji,jj,jk,jpfer)/(conc3+trn(ji,jj,jk,jpfer)), |
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124 | & trn(ji,jj,jk,jpno3)/(conc1+trn(ji,jj,jk,jpno3)), |
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125 | & trn(ji,jj,jk,jppo4)/(conc1+trn(ji,jj,jk,jppo4))) |
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126 | silfac=5.4*exp(-4.23*silim)+1.13 |
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127 | siborn=max(0.,(trn(ji,jj,jk,jpsil)-15.E-6)) |
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128 | silfac2=1.+2.*siborn/(siborn+xksi2) |
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129 | silfac=min(6.53,silfac*silfac2) |
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130 | C |
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131 | ysopt(ji,jj,jk)=grosip*trn(ji,jj,jk,jpsil)/(trn(ji,jj,jk,jpsil) |
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132 | $ +xksi1)*silfac*(1.-0.6*cmask(ji,jj,1)) |
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133 | C |
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134 | END DO |
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135 | END DO |
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136 | END DO |
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137 | |
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138 | DO jk = 1,jkopt |
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139 | DO jj = 1,jpj |
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140 | DO ji = 1,jpi |
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141 | IF (tmask(ji,jj,jk).NE.0) THEN |
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142 | C |
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143 | C Mixed-layer effect on production |
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144 | C -------------------------------- |
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145 | C |
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146 | zmixnano=max(0.2,(1.-0.8*(hmld(ji,jj)/zmeu(ji,jj)-1.))) |
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147 | zmixdiat=max(0.5,(1.-0.5*(hmld(ji,jj)/zmeu(ji,jj)-1.))) |
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148 | prbio(ji,jj,jk)=prbio(ji,jj,jk)*min(1.,zmixnano) |
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149 | prdia(ji,jj,jk)=prdia(ji,jj,jk)*min(1.,zmixdiat) |
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150 | C |
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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 | DO jk = 1,jkopt |
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157 | DO jj = 1,jpj |
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158 | DO ji = 1,jpi |
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159 | C |
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160 | C Computation of the maximum light intensity |
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161 | C ------------------------------------------ |
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162 | C |
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163 | etot2(ji,jj,jk)=etot(ji,jj,jk)*24./(strn(ji,jj)+rtrn) |
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164 | IF (strn(ji,jj).lt.1.) etot2(ji,jj,jk)=etot(ji,jj,jk) |
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165 | C |
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166 | END DO |
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167 | END DO |
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168 | END DO |
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169 | |
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170 | DO jk = 1,jkopt |
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171 | DO jj = 1,jpj |
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172 | DO ji = 1,jpi |
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173 | C |
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174 | C Computation of the various production terms for nanophyto. |
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175 | C ---------------------------------------------------------- |
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176 | C |
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177 | prbiochl = prmax(ji,jj,jk) |
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178 | & *(1.-exp(-pislopen(ji,jj,jk)*etot2(ji,jj,jk))) |
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179 | |
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180 | prorca(ji,jj,jk) = prbio(ji,jj,jk) |
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181 | & *xlimphy(ji,jj,jk)*trn(ji,jj,jk,jpphy)*rfact2 |
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182 | |
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183 | pronew(ji,jj,jk)=prorca(ji,jj,jk)*xnanono3(ji,jj,jk) |
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184 | & /(xnanono3(ji,jj,jk)+xnanonh4(ji,jj,jk)+rtrn) |
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185 | proreg(ji,jj,jk)=prorca(ji,jj,jk)-pronew(ji,jj,jk) |
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186 | C |
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187 | zprod=rjjss*prorca(ji,jj,jk)*prbiochl*trn(ji,jj,jk,jpphy) |
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188 | & *xlimphy(ji,jj,jk) |
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189 | |
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190 | prorca5(ji,jj,jk) = (15.E-6)**2*zprod/0.033 |
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191 | & /(pislopead(ji,jj,jk)*etot2(ji,jj,jk)*trn(ji,jj,jk,jpnfe) |
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192 | & +rtrn) |
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193 | |
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194 | prorca6(ji,jj,jk) = 0.033*144.*zprod/(pislopead(ji,jj,jk) |
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195 | & *etot2(ji,jj,jk)*max(trn(ji,jj,jk,jpnch),1.E-10)+rtrn) |
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196 | |
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197 | END DO |
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198 | END DO |
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199 | END DO |
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200 | |
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201 | DO jk = 1,jkopt |
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202 | DO jj = 1,jpj |
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203 | DO ji = 1,jpi |
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204 | C |
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205 | C Computation of the various production terms for diatoms |
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206 | C ------------------------------------------------------- |
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207 | C |
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208 | prdiachl = prmax(ji,jj,jk) |
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209 | & *(1.-exp(-etot2(ji,jj,jk)*pislope2n(ji,jj,jk))) |
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210 | C |
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211 | prorca2(ji,jj,jk) = prdia(ji,jj,jk) |
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212 | & *xlimdia(ji,jj,jk)*trn(ji,jj,jk,jpdia)*rfact2 |
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213 | C |
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214 | pronew2(ji,jj,jk)=prorca2(ji,jj,jk)*xdiatno3(ji,jj,jk) |
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215 | & /(xdiatno3(ji,jj,jk)+xdiatnh4(ji,jj,jk)+rtrn) |
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216 | proreg2(ji,jj,jk)=prorca2(ji,jj,jk)-pronew2(ji,jj,jk) |
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217 | prorca3(ji,jj,jk) = prorca2(ji,jj,jk)*ysopt(ji,jj,jk) |
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218 | C |
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219 | zprod=rjjss*prorca2(ji,jj,jk)*prdiachl*xlimdia(ji,jj,jk) |
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220 | & *trn(ji,jj,jk,jpdia) |
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221 | C |
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222 | prorca4(ji,jj,jk) = (20.E-6)**2*zprod/0.05 |
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223 | & /(pislopead2(ji,jj,jk)*etot2(ji,jj,jk)*trn(ji,jj,jk,jpdfe) |
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224 | & +rtrn) |
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225 | C |
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226 | prorca7(ji,jj,jk) = 0.05*144.*zprod/(pislopead2(ji,jj,jk) |
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227 | & *etot2(ji,jj,jk)*max(trn(ji,jj,jk,jpdch),1.E-10)+rtrn) |
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228 | C |
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229 | END DO |
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230 | END DO |
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231 | END DO |
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232 | C |
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233 | #endif |
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234 | RETURN |
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235 | END |
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236 | |
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