1 | |
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2 | CCC $Header$ |
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3 | CCC TOP 1.0 , LOCEAN-IPSL (2005) |
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4 | C This software is governed by CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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5 | C --------------------------------------------------------------------------- |
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6 | CDIR$ LIST |
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7 | SUBROUTINE p4zlys |
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8 | #if defined key_passivetrc && defined key_trc_pisces |
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9 | CCC--------------------------------------------------------------------- |
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10 | CCC |
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11 | CCC ROUTINE p4zlys : PISCES MODEL |
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12 | CCC ***************************** |
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13 | CCC |
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14 | CCC |
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15 | CCC PURPOSE. |
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16 | CCC -------- |
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17 | CCC *P4ZLYS* CALCULATES DEGREE OF CACO3 SATURATION IN THE WATER |
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18 | CCC COLUMN, DISSOLUTION/PRECIPITATION OF CACO3 AND LOSS |
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19 | CCC OF CACO3 TO THE CACO3 SEDIMENT POOL. |
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20 | CC |
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21 | CC EXTERNALS. |
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22 | CC ---------- |
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23 | CC NONE. |
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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 : 1988-07 E. MAIER-REIMER MPI HAMBURG |
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28 | CC additions : 1998 O. Aumont |
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29 | CC modifications : 1999 C. Le Quere |
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30 | CC modifications : 2004 O. Aumont |
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31 | CC --------------------------------------------------------------------------- |
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32 | CC parameters and commons |
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33 | CC ====================== |
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34 | CDIR$ NOLIST |
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35 | USE oce_trc |
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36 | USE trp_trc |
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37 | USE sms |
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38 | IMPLICIT NONE |
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39 | CDIR$ LIST |
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40 | CC---------------------------------------------------------------------- |
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41 | CC local declarations |
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42 | CC ================== |
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43 | C |
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44 | INTEGER ji, jj, jk, jn |
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45 | REAL zbot, zalk, zdic, zph, remco3, ah2 |
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46 | REAL delco3, excess, dispot, zfact, zalka |
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47 | C |
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48 | C |
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49 | C* 1.1 BEGIN OF ITERATION |
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50 | C ------------------------ |
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51 | C |
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52 | DO jn = 1,5 |
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53 | C |
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54 | C* 1.2 COMPUTE [CO3--] and [H+] CONCENTRATIONS |
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55 | C ------------------------------------------- |
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56 | C |
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57 | DO jk = 1,jpkm1 |
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58 | DO jj=1,jpj |
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59 | DO ji = 1, jpi |
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60 | C |
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61 | C* 1.3 SET DUMMY VARIABLE FOR TOTAL BORATE |
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62 | C ----------------------------------------- |
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63 | C |
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64 | zbot = borat(ji,jj,jk) |
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65 | zfact=rhop(ji,jj,jk)/1000.+rtrn |
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66 | C |
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67 | C* 1.4 SET DUMMY VARIABLE FOR [H+] |
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68 | C --------------------------------- |
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69 | C |
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70 | zph = hi(ji,jj,jk)*tmask(ji,jj,jk)/zfact |
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71 | & +(1.-tmask(ji,jj,jk))*1.e-9 |
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72 | C |
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73 | C* 1.5 SET DUMMY VARIABLE FOR [SUM(CO2)]GIVEN |
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74 | C ------------------------------------------- |
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75 | C |
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76 | zdic=trn(ji,jj,jk,jpdic)/zfact |
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77 | zalka=trn(ji,jj,jk,jptal)/zfact |
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78 | C |
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79 | C* 1.6 CALCULATE [ALK]([CO3--], [HCO3-]) |
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80 | C ------------------------------------ |
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81 | C |
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82 | zalk=zalka-(akw3(ji,jj,jk)/zph-zph |
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83 | & +zbot/(1.+zph/akb3(ji,jj,jk))) |
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84 | C |
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85 | C* 2.10 CALCULATE [H+] and [CO3--] |
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86 | C ----------------------------------------- |
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87 | C |
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88 | ah2=sqrt((zdic-zalk)*(zdic-zalk)+ |
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89 | & 4.*(zalk*ak23(ji,jj,jk)/ak13(ji,jj,jk)) |
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90 | & *(2*zdic-zalk)) |
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91 | C |
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92 | ah2=0.5*ak13(ji,jj,jk)/zalk*((zdic-zalk)+ah2) |
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93 | co3(ji,jj,jk) = zalk/(2.+ah2/ak23(ji,jj,jk))*zfact |
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94 | |
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95 | hi(ji,jj,jk) = ah2*zfact |
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96 | C |
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97 | ENDDO |
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98 | ENDDO |
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99 | END DO |
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100 | C |
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101 | END DO |
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102 | C |
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103 | C --------------------------------------------------------- |
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104 | C* 2. CALCULATE DEGREE OF CACO3 SATURATION AND CORRESPONDING |
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105 | C DISSOLOUTION AND PRECIPITATION OF CACO3 (BE AWARE OF |
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106 | C MGCO3) |
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107 | C --------------------------------------------------------- |
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108 | C |
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109 | DO jk = 1,jpkm1 |
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110 | DO jj = 1,jpj |
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111 | DO ji = 1, jpi |
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112 | C |
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113 | C* 2.1 DEVIATION OF [CO3--] FROM SATURATION VALUE |
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114 | C ------------------------------------------------ |
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115 | C |
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116 | delco3 = co3(ji,jj,jk)-aksp(ji,jj,jk)/calcon |
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117 | C |
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118 | C* 2.2 SET DEGREE OF UNDER-/SUPERSATURATION |
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119 | C ------------------------------------------ |
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120 | C |
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121 | excess = max(0.,-delco3) |
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122 | C |
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123 | C* 2.3 AMOUNT CACO3 (12C) THAT RE-ENTERS SOLUTION |
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124 | C (ACCORDING TO THIS FORMULATION ALSO SOME PARTICULATE |
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125 | C CACO3 GETS DISSOLVED EVEN IN THE CASE OF OVERSATURATION) |
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126 | C -------------------------------------------------------------- |
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127 | C |
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128 | dispot = trn(ji,jj,jk,jpcal)* |
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129 | & excess/(dispo0+excess) |
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130 | # if defined key_off_degrad |
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131 | & *facvol(ji,jj,jk) |
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132 | # endif |
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133 | C |
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134 | C* 2.4 CHANGE OF [CO3--] , [ALK], PARTICULATE [CACO3], |
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135 | C AND [SUM(CO2)] DUE TO CACO3 DISSOLUTION/PRECIPITATION |
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136 | C ----------------------------------------------------------- |
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137 | C |
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138 | remco3=dispot/rmoss |
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139 | co3(ji,jj,jk) = co3(ji,jj,jk)+ |
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140 | & remco3*rfact |
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141 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal)+ |
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142 | & 2.*remco3 |
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143 | tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal)- |
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144 | & remco3 |
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145 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic)+ |
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146 | & remco3 |
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147 | C |
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148 | ENDDO |
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149 | ENDDO |
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150 | END DO |
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151 | |
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152 | # if defined key_trc_dia3d |
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153 | trc3d(:,:,:,1) = rhop(:,:,:) |
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154 | trc3d(:,:,:,2) = co3(:,:,:) |
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155 | trc3d(:,:,:,3) = aksp(:,:,:)/calcon |
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156 | # endif |
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157 | |
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158 | C |
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159 | #endif |
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160 | RETURN |
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161 | END |
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