1 | MODULE p4zflx |
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2 | !!====================================================================== |
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3 | !! *** MODULE p4zflx *** |
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4 | !! TOP : PISCES CALCULATES GAS EXCHANGE AND CHEMISTRY AT SEA SURFACE |
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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 | !! ! 2011-02 (J. Simeon, J. Orr) Include total atm P correction |
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12 | !!---------------------------------------------------------------------- |
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13 | #if defined key_pisces |
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14 | !!---------------------------------------------------------------------- |
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15 | !! 'key_pisces' PISCES bio-model |
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16 | !!---------------------------------------------------------------------- |
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17 | !! p4z_flx : CALCULATES GAS EXCHANGE AND CHEMISTRY AT SEA SURFACE |
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18 | !! p4z_flx_init : Read the namelist |
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19 | !! p4z_patm : Read sfc atm pressure [atm] for each grid cell |
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20 | !!---------------------------------------------------------------------- |
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21 | USE oce_trc ! shared variables between ocean and passive tracers |
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22 | USE trc ! passive tracers common variables |
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23 | USE sms_pisces ! PISCES Source Minus Sink variables |
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24 | USE p4zche ! Chemical model |
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25 | USE prtctl_trc ! print control for debugging |
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26 | USE iom ! I/O manager |
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27 | USE fldread ! read input fields |
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28 | #if defined key_cpl_carbon_cycle |
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29 | USE sbc_oce, ONLY : atm_co2 ! atmospheric pCO2 |
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30 | #endif |
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31 | |
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32 | IMPLICIT NONE |
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33 | PRIVATE |
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34 | |
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35 | PUBLIC p4z_flx |
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36 | PUBLIC p4z_flx_init |
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37 | PUBLIC p4z_flx_alloc |
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38 | |
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39 | ! !!** Namelist nampisext ** |
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40 | REAL(wp) :: atcco2 !: pre-industrial atmospheric [co2] (ppm) |
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41 | #ifdef key_c13 |
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42 | REAL(wp) :: d13c_co2 !: d13c of atmospheric [co2] (ppm) |
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43 | #endif |
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44 | LOGICAL :: ln_co2int !: flag to read in a file and interpolate atmospheric pco2 or not |
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45 | CHARACTER(len=34) :: clname !: filename of pco2 values |
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46 | INTEGER :: nn_offset !: Offset model-data start year (default = 0) |
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47 | |
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48 | !! Variables related to reading atmospheric CO2 time history |
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49 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: atcco2h, years |
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50 | INTEGER :: nmaxrec, numco2 |
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51 | |
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52 | ! !!* nampisatm namelist (Atmospheric PRessure) * |
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53 | LOGICAL, PUBLIC :: ln_presatm !: ref. pressure: global mean Patm (F) or a constant (F) |
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54 | |
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55 | REAL(wp) , ALLOCATABLE, SAVE, DIMENSION(:,:) :: patm ! atmospheric pressure at kt [N/m2] |
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56 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_patm ! structure of input fields (file informations, fields read) |
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57 | |
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58 | |
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59 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: oce_co2 !: ocean carbon flux |
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60 | #if defined key_c13 |
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61 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: oce_c13 !: ocean C13 flux |
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62 | #endif |
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63 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: satmco2 !: atmospheric pco2 |
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64 | |
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65 | REAL(wp) :: xconv = 0.01_wp / 3600._wp !: coefficients for conversion |
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66 | |
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67 | !!* Substitution |
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68 | # include "top_substitute.h90" |
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69 | !!---------------------------------------------------------------------- |
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70 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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71 | !! $Id$ |
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72 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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73 | !!---------------------------------------------------------------------- |
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74 | CONTAINS |
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75 | |
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76 | SUBROUTINE p4z_flx ( kt, knt ) |
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77 | !!--------------------------------------------------------------------- |
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78 | !! *** ROUTINE p4z_flx *** |
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79 | !! |
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80 | !! ** Purpose : CALCULATES GAS EXCHANGE AND CHEMISTRY AT SEA SURFACE |
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81 | !! |
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82 | !! ** Method : |
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83 | !! - Include total atm P correction via Esbensen & Kushnir (1981) |
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84 | !! - Pressure correction NOT done for key_cpl_carbon_cycle |
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85 | !! - Remove Wanninkhof chemical enhancement; |
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86 | !! - Add option for time-interpolation of atcco2.txt |
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87 | !!--------------------------------------------------------------------- |
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88 | ! |
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89 | INTEGER, INTENT(in) :: kt, knt ! |
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90 | ! |
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91 | INTEGER :: ji, jj, jm, iind, iindm1 |
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92 | REAL(wp) :: ztc, ztc2, ztc3, zws, zkgwan |
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93 | REAL(wp) :: zfld, zflu, zfld16, zflu16, zfact |
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94 | REAL(wp) :: zph, zah2, zbot, zdic, zalk, zsch_o2, zalka, zsch_co2 |
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95 | REAL(wp) :: zyr_dec, zdco2dt |
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96 | CHARACTER (len=25) :: charout |
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97 | REAL(wp), POINTER, DIMENSION(:,:) :: zkgco2, zkgo2, zh2co3, z_co3, zoflx, zw2d |
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98 | #ifdef key_c13 |
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99 | REAL(wp) :: zft, zfco3 |
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100 | REAL(wp), POINTER, DIMENSION(:,:) :: za_dic, za_g |
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101 | #endif |
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102 | !!--------------------------------------------------------------------- |
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103 | ! |
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104 | IF( nn_timing == 1 ) CALL timing_start('p4z_flx') |
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105 | ! |
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106 | #ifdef key_c13 |
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107 | CALL wrk_alloc( jpi, jpj, zkgco2, zkgo2, zh2co3, z_co3, zoflx, za_dic, za_g ) |
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108 | #else |
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109 | CALL wrk_alloc( jpi, jpj, zkgco2, zkgo2, zh2co3, z_co3, zoflx ) |
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110 | #endif |
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111 | ! |
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112 | |
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113 | ! SURFACE CHEMISTRY (PCO2 AND [H+] IN |
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114 | ! SURFACE LAYER); THE RESULT OF THIS CALCULATION |
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115 | ! IS USED TO COMPUTE AIR-SEA FLUX OF CO2 |
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116 | |
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117 | IF( kt /= nit000 .AND. knt == 1 ) CALL p4z_patm( kt ) ! Get sea-level pressure (E&K [1981] climatology) for use in flux calcs |
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118 | |
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119 | IF( ln_co2int ) THEN |
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120 | ! Linear temporal interpolation of atmospheric pco2. atcco2.txt has annual values. |
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121 | ! Caveats: First column of .txt must be in years, decimal years preferably. |
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122 | ! For nn_offset, if your model year is iyy, nn_offset=(years(1)-iyy) |
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123 | ! then the first atmospheric CO2 record read is at years(1) |
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124 | zyr_dec = REAL( nyear + nn_offset, wp ) + REAL( nday_year, wp ) / REAL( nyear_len(1), wp ) |
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125 | jm = 1 |
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126 | DO WHILE( jm <= nmaxrec .AND. years(jm) < zyr_dec ) ; jm = jm + 1 ; END DO |
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127 | iind = jm ; iindm1 = jm - 1 |
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128 | zdco2dt = ( atcco2h(iind) - atcco2h(iindm1) ) / ( years(iind) - years(iindm1) + rtrn ) |
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129 | atcco2 = zdco2dt * ( zyr_dec - years(iindm1) ) + atcco2h(iindm1) |
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130 | satmco2(:,:) = atcco2 |
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131 | ENDIF |
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132 | |
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133 | #if defined key_cpl_carbon_cycle |
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134 | satmco2(:,:) = atm_co2(:,:) |
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135 | #endif |
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136 | |
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137 | DO jm = 1, 10 |
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138 | !CDIR NOVERRCHK |
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139 | DO jj = 1, jpj |
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140 | !CDIR NOVERRCHK |
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141 | DO ji = 1, jpi |
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142 | |
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143 | ! DUMMY VARIABLES FOR DIC, H+, AND BORATE |
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144 | zbot = borat(ji,jj,1) |
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145 | zfact = rhop(ji,jj,1) / 1000. + rtrn |
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146 | zdic = trb(ji,jj,1,jpdic) / zfact |
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147 | zph = MAX( hi(ji,jj,1), 1.e-10 ) / zfact |
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148 | zalka = trb(ji,jj,1,jptal) / zfact |
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149 | |
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150 | ! CALCULATE [ALK]([CO3--], [HCO3-]) |
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151 | zalk = zalka - ( akw3(ji,jj,1) / zph - zph + zbot / ( 1.+ zph / akb3(ji,jj,1) ) ) |
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152 | |
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153 | ! CALCULATE [ALK]([CO3--], [HCO3-]) |
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154 | zalk = zalka - ( akw3(ji,jj,1) / zph - zph / aphscale(ji,jj,1) & |
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155 | & + zbot / ( 1.+ zph / akb3(ji,jj,1) ) ) |
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156 | |
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157 | ! CALCULATE [H+] AND [H2CO3] |
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158 | zah2 = SQRT( (zdic-zalk)**2 + 4.* ( zalk * ak23(ji,jj,1) & |
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159 | & / ak13(ji,jj,1) ) * ( 2.* zdic - zalk ) ) |
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160 | zah2 = 0.5 * ak13(ji,jj,1) / zalk * ( ( zdic - zalk ) + zah2 ) |
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161 | zh2co3(ji,jj) = ( 2.* zdic - zalk ) / ( 2.+ ak13(ji,jj,1) / zah2 ) * zfact |
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162 | hi(ji,jj,1) = zah2 * zfact |
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163 | END DO |
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164 | END DO |
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165 | END DO |
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166 | |
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167 | |
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168 | ! -------------- |
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169 | ! COMPUTE FLUXES |
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170 | ! -------------- |
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171 | |
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172 | ! FIRST COMPUTE GAS EXCHANGE COEFFICIENTS |
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173 | ! ------------------------------------------- |
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174 | |
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175 | !CDIR NOVERRCHK |
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176 | DO jj = 1, jpj |
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177 | !CDIR NOVERRCHK |
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178 | DO ji = 1, jpi |
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179 | ztc = MIN( 35., tsn(ji,jj,1,jp_tem) ) |
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180 | ztc2 = ztc * ztc |
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181 | ztc3 = ztc * ztc2 |
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182 | ztc4 = ztc2 * ztc2 |
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183 | ! Compute the schmidt Number both O2 and CO2 |
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184 | zsch_co2 = 2116.8 - 136.25 * ztc + 4.7353 * ztc2 - 0.092307 * ztc3 + 0.0007555 * ztc4 |
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185 | zsch_o2 = 1920.4 - 135.6 * ztc + 5.2122 * ztc2 - 0.109390 * ztc3 + 0.0009377 * ztc4 |
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186 | ! wind speed |
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187 | zws = wndm(ji,jj) * wndm(ji,jj) |
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188 | ! Compute the piston velocity for O2 and CO2 |
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189 | zkgwan = 0.251 * zws |
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190 | zkgwan = zkgwan * xconv * ( 1.- fr_i(ji,jj) ) * tmask(ji,jj,1) |
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191 | # if defined key_degrad |
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192 | zkgwan = zkgwan * facvol(ji,jj,1) |
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193 | #endif |
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194 | ! compute gas exchange for CO2 and O2 |
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195 | zkgco2(ji,jj) = zkgwan * SQRT( 660./ zsch_co2 ) |
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196 | zkgo2 (ji,jj) = zkgwan * SQRT( 660./ zsch_o2 ) |
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197 | #if defined key_c13 |
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198 | ! Compute fractionation factors for C13 from Zhang et al. 1995 |
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199 | zfco3 = MAX(0.05,(z_co3(ji,jj)/trb(ji,jj,1,jpdic)+rtrn)) |
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200 | zfco3 = MIN(0.2 , zfco3) |
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201 | zft = MIN( 25., ztc ) |
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202 | zft = MAX( 5., zft ) |
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203 | za_g (ji,jj) = 1. + ( -0.0049 * zft - 1.31 ) / 1000. |
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204 | za_dic(ji,jj) = 1. + ( 0.014 * zft * zfco3 - 0.105 * zft + 10.53 ) / 1000. |
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205 | #endif |
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206 | END DO |
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207 | END DO |
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208 | |
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209 | DO jj = 1, jpj |
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210 | DO ji = 1, jpi |
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211 | ! Compute CO2 flux for the sea and air |
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212 | zfld = satmco2(ji,jj) * patm(ji,jj) * tmask(ji,jj,1) * chemc(ji,jj) * zkgco2(ji,jj) ! (mol/L) * (m/s) |
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213 | zflu = zh2co3(ji,jj) * tmask(ji,jj,1) * zkgco2(ji,jj) ! (mol/L) (m/s) ? |
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214 | oce_co2(ji,jj) = ( zfld - zflu ) * rfact2 * e1e2t(ji,jj) * tmask(ji,jj,1) * 1000. |
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215 | ! compute the trend |
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216 | tra(ji,jj,1,jpdic) = tra(ji,jj,1,jpdic) + ( zfld - zflu ) * rfact2 / fse3t(ji,jj,1) |
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217 | |
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218 | ! Compute O2 flux |
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219 | zfld16 = patm(ji,jj) * chemo2(ji,jj,1) * tmask(ji,jj,1) * zkgo2(ji,jj) ! (mol/L) * (m/s) |
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220 | zflu16 = trb(ji,jj,1,jpoxy) * tmask(ji,jj,1) * zkgo2(ji,jj) |
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221 | zoflx(ji,jj) = zfld16 - zflu16 |
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222 | tra(ji,jj,1,jpoxy) = tra(ji,jj,1,jpoxy) + zoflx(ji,jj) * rfact2 / fse3t(ji,jj,1) |
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223 | #if defined key_c13 |
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224 | tra(ji,jj,1,jp13dic) = tra(ji,jj,1,jp13dic) + ( zfld * (1 + d13c_co2 / 1000.) & |
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225 | - zflu * trb(ji,jj,1,jp13dic) / ( trb(ji,jj,1,jpdic) + rtrn ) & |
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226 | / ( za_dic(ji,jj) + rtrn) ) & |
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227 | * 0.99919 * za_g(ji,jj) * rfact2 / fse3t(ji,jj,1) |
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228 | |
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229 | oce_c13(ji,jj) = ( zfld * (1 + d13c_co2 / 1000.) & |
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230 | - zflu * trb(ji,jj,1,jp13dic) / ( trb(ji,jj,1,jpdic) + rtrn ) & |
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231 | / ( za_dic(ji,jj) + rtrn) ) & |
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232 | * 0.99919 * za_g(ji,jj) * rfact2 * e1e2t(ji,jj) * tmask(ji,jj,1) * 1000. |
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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 | |
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237 | t_oce_co2_flx = glob_sum( oce_co2(:,:) ) ! Total Flux of Carbon |
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238 | t_oce_co2_flx_cum = t_oce_co2_flx_cum + t_oce_co2_flx ! Cumulative Total Flux of Carbon |
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239 | ! t_atm_co2_flx = glob_sum( satmco2(:,:) * e1e2t(:,:) ) ! Total atmospheric pCO2 |
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240 | t_atm_co2_flx = atcco2 ! Total atmospheric pCO2 |
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241 | |
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242 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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243 | WRITE(charout, FMT="('flx ')") |
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244 | CALL prt_ctl_trc_info(charout) |
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245 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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246 | ENDIF |
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247 | |
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248 | IF( lk_iomput .AND. knt == nrdttrc ) THEN |
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249 | CALL wrk_alloc( jpi, jpj, zw2d ) |
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250 | IF( iom_use( "Cflx" ) ) THEN |
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251 | zw2d(:,:) = oce_co2(:,:) / e1e2t(:,:) * rfact2r |
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252 | CALL iom_put( "Cflx" , zw2d ) |
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253 | ENDIF |
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254 | #if defined key_c13 |
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255 | CALL wrk_alloc( jpi, jpj, zw2d ) |
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256 | IF( iom_use( "C13flx" ) ) THEN |
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257 | zw2d(:,:) = oce_c13(:,:) / e1e2t(:,:) * rfact2r |
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258 | CALL iom_put( "C13flx" , zw2d ) |
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259 | ENDIF |
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260 | #endif |
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261 | |
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262 | IF( lk_iomput .AND. knt == nrdttrc ) THEN |
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263 | CALL wrk_alloc( jpi, jpj, zw2d ) |
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264 | IF( iom_use( "Cflx" ) ) THEN |
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265 | zw2d(:,:) = oce_co2(:,:) / e1e2t(:,:) * rfact2r |
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266 | CALL iom_put( "Cflx" , zw2d ) |
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267 | ENDIF |
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268 | IF( iom_use( "Oflx" ) ) THEN |
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269 | zw2d(:,:) = zoflx(:,:) * 1000 * tmask(:,:,1) |
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270 | CALL iom_put( "Oflx" , zw2d ) |
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271 | ENDIF |
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272 | IF( iom_use( "Kg" ) ) THEN |
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273 | zw2d(:,:) = zkgco2(:,:) * tmask(:,:,1) |
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274 | CALL iom_put( "Kg" , zw2d ) |
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275 | ENDIF |
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276 | IF( iom_use( "Dpco2" ) ) THEN |
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277 | zw2d(:,:) = ( satmco2(:,:) * patm(:,:) - zh2co3(:,:) / ( chemc(:,:) + rtrn ) ) * tmask(:,:,1) |
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278 | CALL iom_put( "Dpco2" , zw2d ) |
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279 | ENDIF |
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280 | IF( iom_use( "Dpo2" ) ) THEN |
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281 | zw2d(:,:) = ( atcox * patm(:,:) - atcox * trn(:,:,1,jpoxy) / ( chemo2(:,:,1) + rtrn ) ) * tmask(:,:,1) |
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282 | CALL iom_put( "Dpo2" , zw2d ) |
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283 | ENDIF |
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284 | IF( iom_use( "tcflx" ) ) CALL iom_put( "tcflx" , t_oce_co2_flx * rfact2r ) ! molC/s |
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285 | CALL iom_put( "tcflxcum" , t_oce_co2_flx_cum ) ! molC |
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286 | ! |
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287 | CALL wrk_dealloc( jpi, jpj, zw2d ) |
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288 | ELSE |
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289 | IF( ln_diatrc ) THEN |
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290 | trc2d(:,:,jp_pcs0_2d ) = oce_co2(:,:) / e1e2t(:,:) * rfact2r |
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291 | trc2d(:,:,jp_pcs0_2d + 1) = zoflx(:,:) * 1000 * tmask(:,:,1) |
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292 | trc2d(:,:,jp_pcs0_2d + 2) = zkgco2(:,:) * tmask(:,:,1) |
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293 | trc2d(:,:,jp_pcs0_2d + 3) = ( satmco2(:,:) * patm(:,:) - zh2co3(:,:) / ( chemc(:,:) + rtrn ) ) * tmask(:,:,1) |
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294 | ENDIF |
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295 | ENDIF |
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296 | |
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297 | ! |
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298 | #ifdef key_c13 |
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299 | CALL wrk_dealloc( jpi, jpj, zkgco2, zkgo2, zh2co3, z_co3, zoflx, za_dic, za_g ) |
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300 | #else |
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301 | CALL wrk_dealloc( jpi, jpj, zkgco2, zkgo2, zh2co3, z_co3, zoflx ) |
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302 | #endif |
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303 | ! |
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304 | IF( nn_timing == 1 ) CALL timing_stop('p4z_flx') |
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305 | ! |
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306 | END SUBROUTINE p4z_flx |
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307 | |
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308 | |
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309 | SUBROUTINE p4z_flx_init |
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310 | !!---------------------------------------------------------------------- |
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311 | !! *** ROUTINE p4z_flx_init *** |
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312 | !! |
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313 | !! ** Purpose : Initialization of atmospheric conditions |
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314 | !! |
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315 | !! ** Method : Read the nampisext namelist and check the parameters |
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316 | !! called at the first timestep (nittrc000) |
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317 | !! ** input : Namelist nampisext |
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318 | !!---------------------------------------------------------------------- |
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319 | NAMELIST/nampisext/ln_co2int, atcco2, & |
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320 | #if defined key_c13 |
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321 | & d13c_co2, & |
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322 | #endif |
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323 | & clname, nn_offset |
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324 | INTEGER :: jm |
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325 | INTEGER :: ios ! Local integer output status for namelist read |
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326 | !!---------------------------------------------------------------------- |
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327 | ! |
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328 | |
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329 | REWIND( numnatp_ref ) ! Namelist nampisext in reference namelist : Pisces atm. conditions |
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330 | READ ( numnatp_ref, nampisext, IOSTAT = ios, ERR = 901) |
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331 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisext in reference namelist', lwp ) |
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332 | |
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333 | REWIND( numnatp_cfg ) ! Namelist nampisext in configuration namelist : Pisces atm. conditions |
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334 | READ ( numnatp_cfg, nampisext, IOSTAT = ios, ERR = 902 ) |
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335 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisext in configuration namelist', lwp ) |
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336 | IF(lwm) WRITE ( numonp, nampisext ) |
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337 | ! |
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338 | IF(lwp) THEN ! control print |
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339 | WRITE(numout,*) ' ' |
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340 | WRITE(numout,*) ' Namelist parameters for air-sea exchange, nampisext' |
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341 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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342 | WRITE(numout,*) ' Choice for reading in the atm pCO2 file or constant value, ln_co2int =', ln_co2int |
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343 | WRITE(numout,*) ' ' |
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344 | ENDIF |
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345 | IF( .NOT.ln_co2int ) THEN |
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346 | IF(lwp) THEN ! control print |
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347 | WRITE(numout,*) ' Constant Atmospheric pCO2 value atcco2 =', atcco2 |
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348 | #if defined key_c13 |
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349 | WRITE(numout,*) ' Constant Atm. d13C of pCO2 value d13c_co2 =', d13c_co2 |
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350 | #endif |
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351 | WRITE(numout,*) ' ' |
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352 | ENDIF |
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353 | satmco2(:,:) = atcco2 ! Initialisation of atmospheric pco2 |
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354 | ELSE |
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355 | IF(lwp) THEN |
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356 | WRITE(numout,*) ' Atmospheric pCO2 value from file clname =', TRIM( clname ) |
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357 | WRITE(numout,*) ' Offset model-data start year nn_offset =', nn_offset |
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358 | WRITE(numout,*) ' ' |
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359 | ENDIF |
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360 | CALL ctl_opn( numco2, TRIM( clname) , 'OLD', 'FORMATTED', 'SEQUENTIAL', -1 , numout, lwp ) |
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361 | jm = 0 ! Count the number of record in co2 file |
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362 | DO |
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363 | READ(numco2,*,END=100) |
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364 | jm = jm + 1 |
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365 | END DO |
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366 | 100 nmaxrec = jm - 1 |
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367 | ALLOCATE( years (nmaxrec) ) ; years (:) = 0._wp |
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368 | ALLOCATE( atcco2h(nmaxrec) ) ; atcco2h(:) = 0._wp |
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369 | |
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370 | REWIND(numco2) |
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371 | DO jm = 1, nmaxrec ! get xCO2 data |
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372 | READ(numco2, *) years(jm), atcco2h(jm) |
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373 | IF(lwp) WRITE(numout, '(f6.0,f7.2)') years(jm), atcco2h(jm) |
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374 | END DO |
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375 | CLOSE(numco2) |
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376 | ENDIF |
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377 | ! |
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378 | oce_co2(:,:) = 0._wp ! Initialization of Flux of Carbon |
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379 | t_oce_co2_flx = 0._wp |
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380 | t_atm_co2_flx = 0._wp |
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381 | #ifdef key_c13 |
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382 | oce_c13(:,:) = 0._wp |
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383 | #endif |
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384 | ! |
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385 | CALL p4z_patm( nit000 ) |
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386 | ! |
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387 | END SUBROUTINE p4z_flx_init |
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388 | |
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389 | SUBROUTINE p4z_patm( kt ) |
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390 | |
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391 | !!---------------------------------------------------------------------- |
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392 | !! *** ROUTINE p4z_atm *** |
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393 | !! |
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394 | !! ** Purpose : Read and interpolate the external atmospheric sea-levl pressure |
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395 | !! ** Method : Read the files and interpolate the appropriate variables |
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396 | !! |
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397 | !!---------------------------------------------------------------------- |
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398 | !! * arguments |
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399 | INTEGER, INTENT( in ) :: kt ! ocean time step |
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400 | ! |
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401 | INTEGER :: ierr |
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402 | INTEGER :: ios ! Local integer output status for namelist read |
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403 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files |
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404 | TYPE(FLD_N) :: sn_patm ! informations about the fields to be read |
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405 | !! |
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406 | NAMELIST/nampisatm/ ln_presatm, sn_patm, cn_dir |
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407 | |
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408 | ! ! ----------------------- ! |
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409 | IF( kt == nit000 ) THEN ! First call kt=nittrc000 ! |
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410 | |
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411 | REWIND( numnatp_ref ) ! Namelist nampisatm in reference namelist : Pisces atm. sea level pressure file |
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412 | READ ( numnatp_ref, nampisatm, IOSTAT = ios, ERR = 901) |
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413 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisatm in reference namelist', lwp ) |
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414 | |
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415 | REWIND( numnatp_cfg ) ! Namelist nampisatm in configuration namelist : Pisces atm. sea level pressure file |
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416 | READ ( numnatp_cfg, nampisatm, IOSTAT = ios, ERR = 902 ) |
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417 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisatm in configuration namelist', lwp ) |
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418 | IF(lwm) WRITE ( numonp, nampisatm ) |
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419 | ! |
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420 | ! |
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421 | IF(lwp) THEN !* control print |
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422 | WRITE(numout,*) |
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423 | WRITE(numout,*) ' Namelist nampisatm : Atmospheric Pressure as external forcing' |
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424 | WRITE(numout,*) ' constant atmopsheric pressure (F) or from a file (T) ln_presatm = ', ln_presatm |
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425 | WRITE(numout,*) |
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426 | ENDIF |
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427 | ! |
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428 | IF( ln_presatm ) THEN |
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429 | ALLOCATE( sf_patm(1), STAT=ierr ) !* allocate and fill sf_patm (forcing structure) with sn_patm |
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430 | IF( ierr > 0 ) CALL ctl_stop( 'STOP', 'p4z_flx: unable to allocate sf_patm structure' ) |
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431 | ! |
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432 | CALL fld_fill( sf_patm, (/ sn_patm /), cn_dir, 'p4z_flx', 'Atmospheric pressure ', 'nampisatm' ) |
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433 | ALLOCATE( sf_patm(1)%fnow(jpi,jpj,1) ) |
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434 | IF( sn_patm%ln_tint ) ALLOCATE( sf_patm(1)%fdta(jpi,jpj,1,2) ) |
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435 | ENDIF |
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436 | ! |
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437 | IF( .NOT.ln_presatm ) patm(:,:) = 1.e0 ! Initialize patm if no reading from a file |
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438 | ! |
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439 | ENDIF |
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440 | ! |
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441 | IF( ln_presatm ) THEN |
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442 | CALL fld_read( kt, 1, sf_patm ) !* input Patm provided at kt + 1/2 |
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443 | patm(:,:) = sf_patm(1)%fnow(:,:,1) ! atmospheric pressure |
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444 | ENDIF |
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445 | ! |
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446 | END SUBROUTINE p4z_patm |
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447 | |
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448 | INTEGER FUNCTION p4z_flx_alloc() |
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449 | !!---------------------------------------------------------------------- |
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450 | !! *** ROUTINE p4z_flx_alloc *** |
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451 | !!---------------------------------------------------------------------- |
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452 | ALLOCATE( oce_co2(jpi,jpj), satmco2(jpi,jpj), patm(jpi,jpj), oce_c13(jpi,jpj), STAT=p4z_flx_alloc ) |
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453 | ! |
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454 | IF( p4z_flx_alloc /= 0 ) CALL ctl_warn('p4z_flx_alloc : failed to allocate arrays') |
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455 | ! |
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456 | END FUNCTION p4z_flx_alloc |
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457 | |
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458 | #else |
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459 | !!====================================================================== |
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460 | !! Dummy module : No PISCES bio-model |
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461 | !!====================================================================== |
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462 | CONTAINS |
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463 | SUBROUTINE p4z_flx( kt ) ! Empty routine |
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464 | INTEGER, INTENT( in ) :: kt |
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465 | WRITE(*,*) 'p4z_flx: You should not have seen this print! error?', kt |
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466 | END SUBROUTINE p4z_flx |
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467 | #endif |
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468 | |
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469 | !!====================================================================== |
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470 | END MODULE p4zflx |
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