[7162] | 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 | !! * Shared module variables |
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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 :: rfep !: Dissolution rate of FeP |
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| 28 | |
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| 29 | !!---------------------------------------------------------------------- |
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| 30 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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[8730] | 31 | !! $Id$ |
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[7162] | 32 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 33 | !!---------------------------------------------------------------------- |
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| 34 | CONTAINS |
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| 35 | |
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| 36 | SUBROUTINE p4z_ligand( kt, knt ) |
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| 37 | !!--------------------------------------------------------------------- |
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| 38 | !! *** ROUTINE p4z_ligand *** |
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| 39 | !! |
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| 40 | !! ** Purpose : Compute remineralization/scavenging of organic ligands |
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| 41 | !! |
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| 42 | !! ** Method : - ??? |
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| 43 | !!--------------------------------------------------------------------- |
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| 44 | ! |
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| 45 | INTEGER, INTENT(in) :: kt, knt ! ocean time step |
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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, zrfepa, zfepr |
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| 49 | CHARACTER (len=25) :: charout |
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| 50 | !!--------------------------------------------------------------------- |
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| 51 | ! |
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| 52 | IF( nn_timing == 1 ) CALL timing_start('p4z_ligand') |
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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 | 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 | ! production from remineralisation of organic matter |
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| 61 | zlgwp = orem(ji,jj,jk) * rlig |
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| 62 | ! decay of weak ligand |
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| 63 | ! This is based on the idea that as LGW is lower |
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| 64 | ! there is a larger fraction of refractory OM |
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[7177] | 65 | zlgwr = max( rlgs , rlgw * exp( -2 * (trb(ji,jj,jk,jplgw)*1e9) ) ) ! years |
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| 66 | zlgwr = 1. / zlgwr * tgfunc(ji,jj,jk) * ( xstep / nyear_len(1) ) * trb(ji,jj,jk,jplgw) |
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[7162] | 67 | ! photochem loss of weak ligand |
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[7177] | 68 | zlgwpr = prlgw * xstep * etot(ji,jj,jk) * trb(ji,jj,jk,jplgw) * (1. - fr_i(ji,jj)) |
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[7162] | 69 | tra(ji,jj,jk,jplgw) = tra(ji,jj,jk,jplgw) + zlgwp - zlgwr - zlgwpr |
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| 70 | END DO |
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| 71 | END DO |
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| 72 | END DO |
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| 73 | |
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| 74 | ! ---------------------------------------------------------- |
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| 75 | ! Dissolution of nanoparticle Fe |
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| 76 | ! ---------------------------------------------------------- |
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| 77 | |
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| 78 | DO jk = 1, jpkm1 |
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| 79 | DO jj = 1, jpj |
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| 80 | DO ji = 1, jpi |
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| 81 | ! dissolution rate is maximal in the presence of light and |
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| 82 | ! lower in the aphotici zone |
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| 83 | ! ! 25 Wm-2 constant |
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| 84 | zrfepa = rfep * ( 1. - EXP( -1. * etot(ji,jj,jk) / 25. ) ) * (1.- fr_i(ji,jj)) |
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| 85 | zrfepa = MAX( (zrfepa / 10.0), zrfepa ) ! min of 10 days lifetime |
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[7177] | 86 | zfepr = rfep * xstep * trb(ji,jj,jk,jpfep) |
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[7162] | 87 | tra(ji,jj,jk,jpfep) = tra(ji,jj,jk,jpfep) - zfepr |
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| 88 | tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + zfepr |
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| 89 | END DO |
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| 90 | END DO |
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| 91 | END DO |
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| 92 | |
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| 93 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 94 | WRITE(charout, FMT="('ligand1')") |
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| 95 | CALL prt_ctl_trc_info(charout) |
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| 96 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 97 | ENDIF |
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| 98 | ! |
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| 99 | IF( nn_timing == 1 ) CALL timing_stop('p4z_ligand') |
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| 100 | ! |
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| 101 | END SUBROUTINE p4z_ligand |
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| 102 | |
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| 103 | |
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| 104 | SUBROUTINE p4z_ligand_init |
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| 105 | !!---------------------------------------------------------------------- |
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| 106 | !! *** ROUTINE p4z_ligand_init *** |
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| 107 | !! |
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| 108 | !! ** Purpose : Initialization of remineralization parameters |
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| 109 | !! |
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| 110 | !! ** Method : Read the nampislig namelist and check the parameters |
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| 111 | !! called at the first timestep |
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| 112 | !! |
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| 113 | !! ** input : Namelist nampislig |
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| 114 | !! |
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| 115 | !!---------------------------------------------------------------------- |
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| 116 | NAMELIST/nampislig/ rlgw, prlgw, rlgs, rfep, rlig |
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| 117 | INTEGER :: ios ! Local integer output status for namelist read |
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| 118 | |
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| 119 | REWIND( numnatp_ref ) ! Namelist nampislig in reference namelist : Pisces remineralization |
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| 120 | READ ( numnatp_ref, nampislig, IOSTAT = ios, ERR = 901) |
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| 121 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampislig in reference namelist', lwp ) |
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| 122 | |
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| 123 | REWIND( numnatp_cfg ) ! Namelist nampislig in configuration namelist : Pisces remineralization |
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| 124 | READ ( numnatp_cfg, nampislig, IOSTAT = ios, ERR = 902 ) |
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| 125 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampislig in configuration namelist', lwp ) |
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| 126 | IF(lwm) WRITE ( numonp, nampislig ) |
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| 127 | |
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| 128 | IF(lwp) THEN ! control print |
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| 129 | WRITE(numout,*) ' ' |
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| 130 | WRITE(numout,*) ' Namelist parameters for ligands, nampislig' |
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| 131 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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| 132 | WRITE(numout,*) ' Dissolution rate of FeP rfep =', rfep |
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| 133 | WRITE(numout,*) ' Lifetime (years) of weak ligands rlgw =', rlgw |
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| 134 | WRITE(numout,*) ' Remin ligand production per unit C rlig =', rlig |
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| 135 | WRITE(numout,*) ' Photolysis of weak ligand prlgw =', prlgw |
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| 136 | WRITE(numout,*) ' Lifetime (years) of strong ligands rlgs =', rlgs |
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| 137 | ENDIF |
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| 138 | ! |
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| 139 | END SUBROUTINE p4z_ligand_init |
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| 140 | |
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| 141 | !!====================================================================== |
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| 142 | END MODULE p4zligand |
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