1 | MODULE p4zligand |
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2 | !!====================================================================== |
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3 | !! *** MODULE p4zligand *** |
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4 | !! TOP : PISCES Compute remineralization/dissolution of organic ligands |
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5 | !!========================================================================= |
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6 | !! History : 3.6 ! 2016-03 (O. Aumont, A. Tagliabue) Quota model and reorganization |
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7 | !!---------------------------------------------------------------------- |
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8 | !! p4z_ligand : Compute remineralization/dissolution of organic ligands |
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9 | !! p4z_ligand_init: Initialisation of parameters for remineralisation |
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10 | !!---------------------------------------------------------------------- |
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11 | USE oce_trc ! shared variables between ocean and passive tracers |
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12 | USE trc ! passive tracers common variables |
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13 | USE sms_pisces ! PISCES Source Minus Sink variables |
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14 | USE prtctl_trc ! print control for debugging |
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15 | |
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16 | IMPLICIT NONE |
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17 | PRIVATE |
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18 | |
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19 | PUBLIC p4z_ligand ! called in p4zbio.F90 |
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20 | PUBLIC p4z_ligand_init ! called in trcsms_pisces.F90 |
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21 | |
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22 | REAL(wp), PUBLIC :: rlgw !: lifetime (years) of weak ligands |
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23 | REAL(wp), PUBLIC :: rlgs !: lifetime (years) of strong ligands |
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24 | REAL(wp), PUBLIC :: rlig !: Remin ligand production |
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25 | REAL(wp), PUBLIC :: prlgw !: Photochemical of weak ligand |
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26 | REAL(wp), PUBLIC :: rfep !: Dissolution rate of FeP |
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27 | |
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28 | !!---------------------------------------------------------------------- |
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29 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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30 | !! $Id: p4zligand.F90 3160 2011-11-20 14:27:18Z cetlod $ |
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31 | !! Software governed by the CeCILL licence (./LICENSE) |
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32 | !!---------------------------------------------------------------------- |
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33 | CONTAINS |
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34 | |
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35 | SUBROUTINE p4z_ligand( kt, knt ) |
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36 | !!--------------------------------------------------------------------- |
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37 | !! *** ROUTINE p4z_ligand *** |
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38 | !! |
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39 | !! ** Purpose : Compute remineralization/scavenging of organic ligands |
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40 | !!--------------------------------------------------------------------- |
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41 | INTEGER, INTENT(in) :: kt, knt ! ocean time step |
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42 | ! |
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43 | INTEGER :: ji, jj, jk |
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44 | REAL(wp) :: zlgwp, zlgwpr, zlgwr, zlablgw, zrfepa, zfepr |
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45 | CHARACTER (len=25) :: charout |
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46 | !!--------------------------------------------------------------------- |
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47 | ! |
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48 | IF( ln_timing ) CALL timing_start('p4z_ligand') |
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49 | ! |
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50 | DO jk = 1, jpkm1 |
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51 | DO jj = 1, jpj |
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52 | DO ji = 1, jpi |
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53 | ! |
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54 | ! ------------------------------------------------------------------ |
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55 | ! Remineralization of iron ligands |
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56 | ! ------------------------------------------------------------------ |
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57 | ! production from remineralisation of organic matter |
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58 | zlgwp = orem(ji,jj,jk) * rlig |
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59 | ! decay of weak ligand |
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60 | ! This is based on the idea that as LGW is lower |
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61 | ! there is a larger fraction of refractory OM |
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62 | zlgwr = max( rlgs , rlgw * exp( -2 * (trb(ji,jj,jk,jplgw)*1e9) ) ) ! years |
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63 | zlgwr = 1. / zlgwr * tgfunc(ji,jj,jk) * ( xstep / nyear_len(1) ) * trb(ji,jj,jk,jplgw) |
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64 | ! photochem loss of weak ligand |
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65 | zlgwpr = prlgw * xstep * etot(ji,jj,jk) * trb(ji,jj,jk,jplgw) * (1. - fr_i(ji,jj)) |
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66 | tra(ji,jj,jk,jplgw) = tra(ji,jj,jk,jplgw) + zlgwp - zlgwr - zlgwpr |
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67 | ! |
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68 | ! ---------------------------------------------------------- |
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69 | ! Dissolution of nanoparticle Fe |
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70 | ! ---------------------------------------------------------- |
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71 | ! dissolution rate is maximal in the presence of light and |
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72 | ! lower in the aphotici zone |
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73 | ! ! 25 Wm-2 constant |
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74 | zrfepa = rfep * ( 1. - EXP( -1. * etot(ji,jj,jk) / 25. ) ) * (1.- fr_i(ji,jj)) |
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75 | zrfepa = MAX( (zrfepa / 10.0), zrfepa ) ! min of 10 days lifetime |
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76 | zfepr = rfep * xstep * trb(ji,jj,jk,jpfep) |
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77 | tra(ji,jj,jk,jpfep) = tra(ji,jj,jk,jpfep) - zfepr |
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78 | tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + zfepr |
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79 | ! |
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80 | END DO |
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81 | END DO |
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82 | END DO |
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83 | ! |
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84 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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85 | WRITE(charout, FMT="('ligand1')") |
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86 | CALL prt_ctl_trc_info(charout) |
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87 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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88 | ENDIF |
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89 | ! |
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90 | IF( ln_timing ) CALL timing_stop('p4z_ligand') |
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91 | ! |
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92 | END SUBROUTINE p4z_ligand |
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93 | |
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94 | |
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95 | SUBROUTINE p4z_ligand_init |
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96 | !!---------------------------------------------------------------------- |
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97 | !! *** ROUTINE p4z_ligand_init *** |
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98 | !! |
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99 | !! ** Purpose : Initialization of remineralization parameters |
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100 | !! |
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101 | !! ** Method : Read the nampislig namelist and check the parameters |
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102 | !! |
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103 | !! ** input : Namelist nampislig |
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104 | !!---------------------------------------------------------------------- |
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105 | INTEGER :: ios ! Local integer |
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106 | ! |
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107 | NAMELIST/nampislig/ rlgw, prlgw, rlgs, rfep, rlig |
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108 | !!---------------------------------------------------------------------- |
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109 | ! |
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110 | IF(lwp) THEN |
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111 | WRITE(numout,*) |
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112 | WRITE(numout,*) 'p4z_ligand_init : remineralization/scavenging of organic ligands' |
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113 | WRITE(numout,*) '~~~~~~~~~~~~~~~' |
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114 | ENDIF |
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115 | REWIND( numnatp_ref ) ! Namelist nampislig in reference namelist : Pisces remineralization |
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116 | READ ( numnatp_ref, nampislig, IOSTAT = ios, ERR = 901) |
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117 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampislig in reference namelist', lwp ) |
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118 | REWIND( numnatp_cfg ) ! Namelist nampislig in configuration namelist : Pisces remineralization |
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119 | READ ( numnatp_cfg, nampislig, IOSTAT = ios, ERR = 902 ) |
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120 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'nampislig in configuration namelist', lwp ) |
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121 | IF(lwm) WRITE ( numonp, nampislig ) |
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122 | ! |
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123 | IF(lwp) THEN ! control print |
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124 | WRITE(numout,*) ' Namelist : nampislig' |
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125 | WRITE(numout,*) ' Dissolution rate of FeP rfep =', rfep |
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126 | WRITE(numout,*) ' Lifetime (years) of weak ligands rlgw =', rlgw |
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127 | WRITE(numout,*) ' Remin ligand production per unit C rlig =', rlig |
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128 | WRITE(numout,*) ' Photolysis of weak ligand prlgw =', prlgw |
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129 | WRITE(numout,*) ' Lifetime (years) of strong ligands rlgs =', rlgs |
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130 | ENDIF |
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131 | ! |
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132 | END SUBROUTINE p4z_ligand_init |
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133 | |
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134 | !!====================================================================== |
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135 | END MODULE p4zligand |
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