1 | MODULE p4zlys |
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2 | !!====================================================================== |
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3 | !! *** MODULE p4zlys *** |
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4 | !! TOP : PISCES |
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5 | !!====================================================================== |
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6 | !! History : - ! 1988-07 (E. MAIER-REIMER) Original code |
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7 | !! - ! 1998 (O. Aumont) additions |
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8 | !! - ! 1999 (C. Le Quere) modifications |
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9 | !! 1.0 ! 2004 (O. Aumont) modifications |
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10 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
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11 | !!---------------------------------------------------------------------- |
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12 | #if defined key_pisces |
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13 | !!---------------------------------------------------------------------- |
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14 | !! 'key_pisces' PISCES bio-model |
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15 | !!---------------------------------------------------------------------- |
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16 | !! p4z_lys : |
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17 | !!---------------------------------------------------------------------- |
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18 | USE oce_trc ! |
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19 | USE trp_trc |
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20 | USE sms |
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21 | |
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22 | IMPLICIT NONE |
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23 | PRIVATE |
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24 | |
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25 | PUBLIC p4z_lys ! called in p4zprg.F90 |
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26 | |
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27 | !!---------------------------------------------------------------------- |
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28 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
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29 | !! $Header:$ |
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30 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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31 | !!---------------------------------------------------------------------- |
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32 | |
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33 | CONTAINS |
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34 | |
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35 | SUBROUTINE p4z_lys |
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36 | !!--------------------------------------------------------------------- |
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37 | !! *** ROUTINE p4z_lys *** |
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38 | !! |
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39 | !! ** Purpose : CALCULATES DEGREE OF CACO3 SATURATION IN THE WATER |
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40 | !! COLUMN, DISSOLUTION/PRECIPITATION OF CACO3 AND LOSS |
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41 | !! OF CACO3 TO THE CACO3 SEDIMENT POOL. |
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42 | !! |
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43 | !! ** Method : - ??? |
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44 | !!--------------------------------------------------------------------- |
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45 | INTEGER :: ji, jj, jk, jn |
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46 | REAL(wp) :: zbot, zalk, zdic, zph, zremco3, zah2 |
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47 | REAL(wp) :: zdispot, zfact, zalka |
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48 | REAL(wp) :: zomegaca, zexcess, zexcess0 |
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49 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zco3 |
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50 | !!--------------------------------------------------------------------- |
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51 | |
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52 | |
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53 | ! ------------------------------------------- |
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54 | ! COMPUTE [CO3--] and [H+] CONCENTRATIONS |
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55 | ! ------------------------------------------- |
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56 | |
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57 | DO jn = 1, 5 ! BEGIN OF ITERATION |
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58 | ! |
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59 | DO jk = 1, jpkm1 |
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60 | DO jj = 1, jpj |
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61 | DO ji = 1, jpi |
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62 | |
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63 | ! SET DUMMY VARIABLE FOR TOTAL BORATE |
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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 | |
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67 | ! SET DUMMY VARIABLE FOR [H+] |
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68 | zph = hi(ji,jj,jk) * tmask(ji,jj,jk) / zfact + ( 1.-tmask(ji,jj,jk) ) * 1.e-9 |
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69 | |
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70 | ! SET DUMMY VARIABLE FOR [SUM(CO2)]GIVEN |
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71 | zdic = trn(ji,jj,jk,jpdic) / zfact |
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72 | zalka = trn(ji,jj,jk,jptal) / zfact |
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73 | |
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74 | ! CALCULATE [ALK]([CO3--], [HCO3-]) |
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75 | zalk = zalka - ( akw3(ji,jj,jk) / zph - zph & |
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76 | & + zbot / (1.+ zph / akb3(ji,jj,jk) ) ) |
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77 | |
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78 | ! CALCULATE [H+] and [CO3--] |
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79 | zah2 = SQRT( (zdic-zalk)*(zdic-zalk)+ & |
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80 | & 4.*(zalk*ak23(ji,jj,jk)/ak13(ji,jj,jk)) & |
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81 | & *(2*zdic-zalk)) |
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82 | |
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83 | zah2=0.5*ak13(ji,jj,jk)/zalk*((zdic-zalk)+zah2) |
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84 | zco3(ji,jj,jk) = zalk/(2.+zah2/ak23(ji,jj,jk))*zfact |
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85 | |
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86 | hi(ji,jj,jk) = zah2*zfact |
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87 | |
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88 | END DO |
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89 | END DO |
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90 | END DO |
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91 | ! |
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92 | END DO |
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93 | |
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94 | ! --------------------------------------------------------- |
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95 | ! CALCULATE DEGREE OF CACO3 SATURATION AND CORRESPONDING |
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96 | ! DISSOLOUTION AND PRECIPITATION OF CACO3 (BE AWARE OF |
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97 | ! MGCO3) |
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98 | ! --------------------------------------------------------- |
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99 | |
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100 | DO jk = 1, jpkm1 |
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101 | DO jj = 1, jpj |
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102 | DO ji = 1, jpi |
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103 | |
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104 | ! DEVIATION OF [CO3--] FROM SATURATION VALUE |
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105 | zomegaca = ( calcon * zco3(ji,jj,jk) ) / aksp(ji,jj,jk) |
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106 | |
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107 | ! SET DEGREE OF UNDER-/SUPERSATURATION |
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108 | zexcess0 = MAX( 0., ( 1.- zomegaca ) ) |
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109 | zexcess = zexcess0**nca |
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110 | |
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111 | ! AMOUNT CACO3 (12C) THAT RE-ENTERS SOLUTION |
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112 | ! (ACCORDING TO THIS FORMULATION ALSO SOME PARTICULATE |
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113 | ! CACO3 GETS DISSOLVED EVEN IN THE CASE OF OVERSATURATION) |
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114 | # if defined key_off_degrad |
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115 | zdispot = kdca * zexcess * trn(ji,jj,jk,jpcal) * facvol(ji,jj,jk) |
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116 | # else |
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117 | zdispot = kdca * zexcess * trn(ji,jj,jk,jpcal) |
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118 | # endif |
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119 | |
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120 | ! CHANGE OF [CO3--] , [ALK], PARTICULATE [CACO3], |
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121 | ! AND [SUM(CO2)] DUE TO CACO3 DISSOLUTION/PRECIPITATION |
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122 | zremco3 = zdispot / rmoss |
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123 | zco3(ji,jj,jk) = zco3(ji,jj,jk) + zremco3 * rfact |
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124 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + 2.*zremco3 |
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125 | tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal) - zremco3 |
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126 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + zremco3 |
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127 | |
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128 | END DO |
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129 | END DO |
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130 | END DO |
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131 | |
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132 | # if defined key_trc_dia3d |
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133 | trc3d(:,:,:,1) = rhop(:,:,:) |
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134 | trc3d(:,:,:,2) = zco3(:,:,:) |
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135 | trc3d(:,:,:,3) = aksp(:,:,:) / calcon |
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136 | # endif |
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137 | ! |
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138 | END SUBROUTINE p4z_lys |
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139 | |
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140 | #else |
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141 | !!====================================================================== |
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142 | !! Dummy module : No PISCES bio-model |
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143 | !!====================================================================== |
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144 | CONTAINS |
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145 | SUBROUTINE p4z_lys( kt ) ! Empty routine |
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146 | INTEGER, INTENT( in ) :: kt |
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147 | WRITE(*,*) 'p4z_lys: You should not have seen this print! error?', kt |
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148 | END SUBROUTINE p4z_lys |
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149 | #endif |
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150 | |
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151 | !!====================================================================== |
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152 | END MODULE p4zlys |
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