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 ! print control for debugging |
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15 | USE iom ! I/O manager |
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16 | |
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17 | IMPLICIT NONE |
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18 | PRIVATE |
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19 | |
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20 | PUBLIC p4z_ligand ! called in p4zbio.F90 |
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21 | PUBLIC p4z_ligand_init ! called in trcsms_pisces.F90 |
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22 | |
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23 | REAL(wp), PUBLIC :: rlgw !: lifetime (years) of weak ligands |
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24 | REAL(wp), PUBLIC :: rlgs !: lifetime (years) of strong ligands |
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25 | REAL(wp), PUBLIC :: rlig !: Remin ligand production |
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26 | REAL(wp), PUBLIC :: prlgw !: Photochemical of weak ligand |
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27 | REAL(wp), PUBLIC :: xklig !: 1/2 saturation constant of photolysis |
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28 | |
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29 | !! * Substitutions |
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30 | # include "do_loop_substitute.h90" |
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31 | !!---------------------------------------------------------------------- |
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32 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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33 | !! $Id$ |
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34 | !! Software governed by the CeCILL license (see ./LICENSE) |
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35 | !!---------------------------------------------------------------------- |
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36 | CONTAINS |
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37 | |
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38 | SUBROUTINE p4z_ligand( kt, knt, Kbb, Krhs ) |
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39 | !!--------------------------------------------------------------------- |
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40 | !! *** ROUTINE p4z_ligand *** |
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41 | !! |
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42 | !! ** Purpose : Compute remineralization/scavenging of organic ligands |
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43 | !!--------------------------------------------------------------------- |
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44 | INTEGER, INTENT(in) :: kt, knt ! ocean time step |
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45 | INTEGER, INTENT(in) :: Kbb, Krhs ! time level indices |
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46 | ! |
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47 | INTEGER :: ji, jj, jk |
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48 | REAL(wp) :: zlgwp, zlgwpr, zlgwr, zlablgw |
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49 | REAL(wp) :: zlam1a, zlam1b, zaggliga, zligco |
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50 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zligrem, zligpr, zligprod, zlcoll3d |
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51 | CHARACTER (len=25) :: charout |
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52 | !!--------------------------------------------------------------------- |
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53 | ! |
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54 | IF( ln_timing ) CALL timing_start('p4z_ligand') |
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55 | ! |
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56 | DO_3D( nn_hls, nn_hls, nn_hls, nn_hls, 1, jpkm1) |
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57 | ! |
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58 | ! ------------------------------------------------------------------ |
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59 | ! Remineralization of iron ligands |
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60 | ! ------------------------------------------------------------------ |
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61 | ! production from remineralisation of organic matter |
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62 | zlgwp = orem(ji,jj,jk) * rlig |
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63 | ! decay of weak ligand |
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64 | ! This is based on the idea that as LGW is lower |
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65 | ! there is a larger fraction of refractory OM |
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66 | zlgwr = ( 1.0 / rlgs * MAX(0., tr(ji,jj,jk,jplgw,Kbb) - xfecolagg(ji,jj,jk) * 1.0E-9 ) & |
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67 | & + 1.0 / rlgw * xfecolagg(ji,jj,jk) * 1.0E-9 ) / ( rtrn + tr(ji,jj,jk,jplgw,Kbb) ) |
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68 | zlgwr = zlgwr * tgfunc(ji,jj,jk) * ( xstep / nyear_len(1) ) * blim(ji,jj,jk) * tr(ji,jj,jk,jplgw,Kbb) |
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69 | ! photochem loss of weak ligand |
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70 | zlgwpr = prlgw * xstep * etot(ji,jj,jk) * tr(ji,jj,jk,jplgw,Kbb)**3 * (1. - fr_i(ji,jj)) & |
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71 | & / ( tr(ji,jj,jk,jplgw,Kbb)**2 + (xklig)**2) |
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72 | ! Coagulation of ligands due to various processes (Brownian, shear, diff. sedimentation |
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73 | ! xcoagfe is computed in p4zfechem |
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74 | ! ------------------------------------------------------------------------------------- |
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75 | ! 50% of the ligands are supposed to be in the colloidal size fraction |
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76 | ! as for FeL |
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77 | zligco = 0.5 * MAX(0., tr(ji,jj,jk,jplgw,Kbb) - xfecolagg(ji,jj,jk) * 1.0E-9 ) |
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78 | zaggliga = xcoagfe(ji,jj,jk) * xstep * zligco |
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79 | |
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80 | tr(ji,jj,jk,jplgw,Krhs) = tr(ji,jj,jk,jplgw,Krhs) + zlgwp - zlgwr - zlgwpr - zaggliga |
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81 | ! |
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82 | zligrem(ji,jj,jk) = zlgwr |
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83 | zligpr(ji,jj,jk) = zlgwpr |
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84 | zligprod(ji,jj,jk) = zlgwp |
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85 | zlcoll3d(ji,jj,jk) = zaggliga |
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86 | END_3D |
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87 | ! |
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88 | ! Output of some diagnostics variables |
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89 | ! --------------------------------- |
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90 | IF( lk_iomput .AND. knt == nrdttrc ) THEN |
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91 | IF( iom_use( "LIGREM" ) ) THEN |
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92 | zligrem(:,:,jpk) = 0. ; CALL iom_put( "LIGREM", zligrem(:,:,:) * 1e9 * 1.e+3 * rfact2r * tmask(:,:,:) ) |
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93 | ENDIF |
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94 | IF( iom_use( "LIGPR" ) ) THEN |
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95 | zligpr(:,:,jpk) = 0. ; CALL iom_put( "LIGPR" , zligpr(:,:,:) * 1e9 * 1.e+3 * rfact2r * tmask(:,:,:) ) |
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96 | ENDIF |
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97 | IF( iom_use( "LPRODR" ) ) THEN |
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98 | zligprod(:,:,jpk) = 0. ; CALL iom_put( "LPRODR", zligprod(:,:,:) * 1e9 * 1.e+3 * rfact2r * tmask(:,:,:) ) |
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99 | ENDIF |
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100 | IF( iom_use( "LGWCOLL" ) ) THEN |
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101 | zlcoll3d(:,:,jpk) = 0. ; CALL iom_put( "LGWCOLL", zlcoll3d(:,:,:) * 1.e9 * 1.e+3 * rfact2r * tmask(:,:,:) ) |
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102 | ENDIF |
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103 | ENDIF |
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104 | ! |
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105 | IF(sn_cfctl%l_prttrc) THEN ! print mean trends (used for debugging) |
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106 | WRITE(charout, FMT="('ligand1')") |
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107 | CALL prt_ctl_info( charout, cdcomp = 'top' ) |
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108 | CALL prt_ctl(tab4d_1=tr(:,:,:,:,Krhs), mask1=tmask, clinfo=ctrcnm) |
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109 | ENDIF |
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110 | ! |
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111 | IF( ln_timing ) CALL timing_stop('p4z_ligand') |
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112 | ! |
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113 | END SUBROUTINE p4z_ligand |
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114 | |
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115 | |
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116 | SUBROUTINE p4z_ligand_init |
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117 | !!---------------------------------------------------------------------- |
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118 | !! *** ROUTINE p4z_ligand_init *** |
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119 | !! |
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120 | !! ** Purpose : Initialization of remineralization parameters |
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121 | !! |
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122 | !! ** Method : Read the nampislig namelist and check the parameters |
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123 | !! |
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124 | !! ** input : Namelist nampislig |
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125 | !!---------------------------------------------------------------------- |
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126 | INTEGER :: ios ! Local integer |
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127 | ! |
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128 | NAMELIST/nampislig/ rlgw, prlgw, rlgs, rlig, xklig |
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129 | !!---------------------------------------------------------------------- |
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130 | ! |
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131 | IF(lwp) THEN |
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132 | WRITE(numout,*) |
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133 | WRITE(numout,*) 'p4z_ligand_init : remineralization/scavenging of organic ligands' |
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134 | WRITE(numout,*) '~~~~~~~~~~~~~~~' |
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135 | ENDIF |
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136 | READ ( numnatp_ref, nampislig, IOSTAT = ios, ERR = 901) |
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137 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampislig in reference namelist' ) |
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138 | READ ( numnatp_cfg, nampislig, IOSTAT = ios, ERR = 902 ) |
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139 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'nampislig in configuration namelist' ) |
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140 | IF(lwm) WRITE ( numonp, nampislig ) |
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141 | ! |
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142 | IF(lwp) THEN ! control print |
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143 | WRITE(numout,*) ' Namelist : nampislig' |
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144 | WRITE(numout,*) ' Lifetime (years) of weak ligands rlgw =', rlgw |
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145 | WRITE(numout,*) ' Remin ligand production per unit C rlig =', rlig |
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146 | WRITE(numout,*) ' Photolysis of weak ligand prlgw =', prlgw |
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147 | WRITE(numout,*) ' Lifetime (years) of strong ligands rlgs =', rlgs |
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148 | WRITE(numout,*) ' 1/2 saturation for photolysis xklig =', xklig |
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149 | ENDIF |
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150 | ! |
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151 | END SUBROUTINE p4z_ligand_init |
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152 | |
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153 | !!====================================================================== |
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154 | END MODULE p4zligand |
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