[3443] | 1 | MODULE p4zsed |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE p4sed *** |
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| 4 | !! TOP : PISCES Compute loss of organic matter in the sediments |
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| 5 | !!====================================================================== |
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| 6 | !! History : 1.0 ! 2004-03 (O. Aumont) Original code |
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| 7 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
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| 8 | !! 3.4 ! 2011-06 (C. Ethe) USE of fldread |
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| 9 | !! 3.5 ! 2012-07 (O. Aumont) improvment of river input of nutrients |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | #if defined key_pisces |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! 'key_pisces' PISCES bio-model |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | !! p4z_sed : Compute loss of organic matter in the sediments |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | USE oce_trc ! shared variables between ocean and passive tracers |
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| 18 | USE trc ! passive tracers common variables |
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| 19 | USE sms_pisces ! PISCES Source Minus Sink variables |
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| 20 | USE p4zsink ! vertical flux of particulate matter due to sinking |
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| 21 | USE p4zopt ! optical model |
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| 22 | USE p4zlim ! Co-limitations of differents nutrients |
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| 23 | USE p4zsbc ! External source of nutrients |
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| 24 | USE p4zint ! interpolation and computation of various fields |
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| 25 | USE iom ! I/O manager |
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| 26 | USE prtctl_trc ! print control for debugging |
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| 27 | |
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| 28 | IMPLICIT NONE |
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| 29 | PRIVATE |
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| 30 | |
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[5385] | 31 | PUBLIC p4z_sed |
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| 32 | PUBLIC p4z_sed_alloc |
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| 33 | |
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[3443] | 34 | |
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| 35 | !! * Module variables |
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[5385] | 36 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: nitrpot !: Nitrogen fixation |
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| 37 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,: ) :: sdenit !: Nitrate reduction in the sediments |
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[3443] | 38 | REAL(wp) :: r1_rday !: inverse of rday |
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| 39 | |
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| 40 | !!* Substitution |
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| 41 | # include "top_substitute.h90" |
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| 42 | !!---------------------------------------------------------------------- |
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| 43 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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[5215] | 44 | !! $Id$ |
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[3443] | 45 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 46 | !!---------------------------------------------------------------------- |
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| 47 | CONTAINS |
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| 48 | |
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[5385] | 49 | SUBROUTINE p4z_sed( kt, knt ) |
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[3443] | 50 | !!--------------------------------------------------------------------- |
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| 51 | !! *** ROUTINE p4z_sed *** |
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| 52 | !! |
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| 53 | !! ** Purpose : Compute loss of organic matter in the sediments. This |
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| 54 | !! is by no way a sediment model. The loss is simply |
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| 55 | !! computed to balance the inout from rivers and dust |
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| 56 | !! |
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| 57 | !! ** Method : - ??? |
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| 58 | !!--------------------------------------------------------------------- |
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| 59 | ! |
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[5385] | 60 | INTEGER, INTENT(in) :: kt, knt ! ocean time step |
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[3443] | 61 | INTEGER :: ji, jj, jk, ikt |
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| 62 | #if ! defined key_sed |
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| 63 | REAL(wp) :: zsumsedsi, zsumsedpo4, zsumsedcal |
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| 64 | REAL(wp) :: zrivalk, zrivsil, zrivno3 |
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| 65 | #endif |
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| 66 | REAL(wp) :: zwflux, zfminus, zfplus |
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| 67 | REAL(wp) :: zlim, zfact, zfactcal |
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[4148] | 68 | REAL(wp) :: zo2, zno3, zflx, zpdenit, z1pdenit, zdenitt, zolimit |
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[4521] | 69 | REAL(wp) :: zsiloss, zcaloss, zws3, zws4, zwsc, zdep, zwstpoc |
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[4529] | 70 | REAL(wp) :: ztrfer, ztrpo4, zwdust, zlight |
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[3531] | 71 | ! |
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[3443] | 72 | CHARACTER (len=25) :: charout |
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[5385] | 73 | REAL(wp), POINTER, DIMENSION(:,: ) :: zpdep, zsidep, zwork1, zwork2, zwork3 |
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[6315] | 74 | REAL(wp), POINTER, DIMENSION(:,:) :: zsedcal, zsedsi, zsedc |
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[4529] | 75 | REAL(wp), POINTER, DIMENSION(:,: ) :: zdenit2d, zironice, zbureff |
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[4521] | 76 | REAL(wp), POINTER, DIMENSION(:,: ) :: zwsbio3, zwsbio4, zwscal |
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[5385] | 77 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zirondep, zsoufer |
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[3443] | 78 | !!--------------------------------------------------------------------- |
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| 79 | ! |
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| 80 | IF( nn_timing == 1 ) CALL timing_start('p4z_sed') |
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| 81 | ! |
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[5385] | 82 | IF( kt == nittrc000 .AND. knt == 1 ) r1_rday = 1. / rday |
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[3443] | 83 | ! |
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| 84 | ! Allocate temporary workspace |
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[5385] | 85 | CALL wrk_alloc( jpi, jpj, zdenit2d, zwork1, zwork2, zwork3, zbureff ) |
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[6315] | 86 | CALL wrk_alloc( jpi, jpj, zsedcal, zsedsi, zsedc ) |
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[4521] | 87 | CALL wrk_alloc( jpi, jpj, zwsbio3, zwsbio4, zwscal ) |
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[5385] | 88 | CALL wrk_alloc( jpi, jpj, jpk, zsoufer ) |
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[4521] | 89 | |
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[3443] | 90 | zdenit2d(:,:) = 0.e0 |
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[4529] | 91 | zbureff (:,:) = 0.e0 |
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[4800] | 92 | zwork1 (:,:) = 0.e0 |
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| 93 | zwork2 (:,:) = 0.e0 |
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| 94 | zwork3 (:,:) = 0.e0 |
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[6315] | 95 | zsedsi (:,:) = 0.e0 |
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| 96 | zsedcal (:,:) = 0.e0 |
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| 97 | zsedc (:,:) = 0.e0 |
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[3443] | 98 | |
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| 99 | ! Iron input/uptake due to sea ice : Crude parameterization based on Lancelot et al. |
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| 100 | ! ---------------------------------------------------- |
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| 101 | IF( ln_ironice ) THEN |
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| 102 | ! |
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| 103 | CALL wrk_alloc( jpi, jpj, zironice ) |
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| 104 | ! |
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| 105 | DO jj = 1, jpj |
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| 106 | DO ji = 1, jpi |
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| 107 | zdep = rfact2 / fse3t(ji,jj,1) |
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[4148] | 108 | zwflux = fmmflx(ji,jj) / 1000._wp |
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[5385] | 109 | zfminus = MIN( 0._wp, -zwflux ) * trb(ji,jj,1,jpfer) * zdep |
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[4148] | 110 | zfplus = MAX( 0._wp, -zwflux ) * icefeinput * zdep |
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[3443] | 111 | zironice(ji,jj) = zfplus + zfminus |
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| 112 | END DO |
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| 113 | END DO |
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| 114 | ! |
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[5385] | 115 | tra(:,:,1,jpfer) = tra(:,:,1,jpfer) + zironice(:,:) |
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[4996] | 116 | ! |
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[5385] | 117 | IF( lk_iomput .AND. knt == nrdttrc .AND. iom_use( "Ironice" ) ) & |
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[3443] | 118 | & CALL iom_put( "Ironice", zironice(:,:) * 1.e+3 * rfact2r * fse3t(:,:,1) * tmask(:,:,1) ) ! iron flux from ice |
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[4996] | 119 | ! |
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[3443] | 120 | CALL wrk_dealloc( jpi, jpj, zironice ) |
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| 121 | ! |
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| 122 | ENDIF |
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| 123 | |
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| 124 | ! Add the external input of nutrients from dust deposition |
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| 125 | ! ---------------------------------------------------------- |
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| 126 | IF( ln_dust ) THEN |
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| 127 | ! |
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| 128 | CALL wrk_alloc( jpi, jpj, zpdep, zsidep ) |
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| 129 | CALL wrk_alloc( jpi, jpj, jpk, zirondep ) |
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| 130 | ! ! Iron and Si deposition at the surface |
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| 131 | IF( ln_solub ) THEN |
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[4800] | 132 | zirondep(:,:,1) = solub(:,:) * dust(:,:) * mfrac * rfact2 / fse3t(:,:,1) / 55.85 + 3.e-10 * r1_ryyss |
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[3443] | 133 | ELSE |
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[4800] | 134 | zirondep(:,:,1) = dustsolub * dust(:,:) * mfrac * rfact2 / fse3t(:,:,1) / 55.85 + 3.e-10 * r1_ryyss |
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[3443] | 135 | ENDIF |
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[4800] | 136 | zsidep(:,:) = 8.8 * 0.075 * dust(:,:) * mfrac * rfact2 / fse3t(:,:,1) / 28.1 |
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| 137 | zpdep (:,:) = 0.1 * 0.021 * dust(:,:) * mfrac * rfact2 / fse3t(:,:,1) / 31. / po4r |
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[3443] | 138 | ! ! Iron solubilization of particles in the water column |
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[4529] | 139 | ! ! dust in kg/m2/s ---> 1/55.85 to put in mol/Fe ; wdust in m/j |
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| 140 | zwdust = 0.03 * rday / ( wdust * 55.85 ) / ( 270. * rday ) |
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[3443] | 141 | DO jk = 2, jpkm1 |
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[4529] | 142 | zirondep(:,:,jk) = dust(:,:) * mfrac * zwdust * rfact2 * EXP( -fsdept(:,:,jk) / 540. ) |
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[3443] | 143 | END DO |
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| 144 | ! ! Iron solubilization of particles in the water column |
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[5385] | 145 | tra(:,:,1,jppo4) = tra(:,:,1,jppo4) + zpdep (:,:) |
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| 146 | tra(:,:,1,jpsil) = tra(:,:,1,jpsil) + zsidep (:,:) |
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| 147 | tra(:,:,:,jpfer) = tra(:,:,:,jpfer) + zirondep(:,:,:) |
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[4996] | 148 | ! |
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| 149 | IF( lk_iomput ) THEN |
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[5385] | 150 | IF( knt == nrdttrc ) THEN |
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[4996] | 151 | IF( iom_use( "Irondep" ) ) & |
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| 152 | & CALL iom_put( "Irondep", zirondep(:,:,1) * 1.e+3 * rfact2r * fse3t(:,:,1) * tmask(:,:,1) ) ! surface downward dust depo of iron |
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| 153 | IF( iom_use( "pdust" ) ) & |
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| 154 | & CALL iom_put( "pdust" , dust(:,:) / ( wdust * rday ) * tmask(:,:,1) ) ! dust concentration at surface |
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[3443] | 155 | ENDIF |
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[4996] | 156 | ELSE |
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| 157 | IF( ln_diatrc ) & |
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| 158 | & trc2d(:,:,jp_pcs0_2d + 11) = zirondep(:,:,1) * 1.e+3 * rfact2r * fse3t(:,:,1) * tmask(:,:,1) |
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[3443] | 159 | ENDIF |
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| 160 | CALL wrk_dealloc( jpi, jpj, zpdep, zsidep ) |
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| 161 | CALL wrk_dealloc( jpi, jpj, jpk, zirondep ) |
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| 162 | ! |
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| 163 | ENDIF |
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| 164 | |
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| 165 | ! Add the external input of nutrients from river |
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| 166 | ! ---------------------------------------------------------- |
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| 167 | IF( ln_river ) THEN |
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[5385] | 168 | DO jj = 1, jpj |
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| 169 | DO ji = 1, jpi |
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| 170 | DO jk = 1, nk_rnf(ji,jj) |
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| 171 | tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) + rivdip(ji,jj) * rfact2 |
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| 172 | tra(ji,jj,jk,jpno3) = tra(ji,jj,jk,jpno3) + rivdin(ji,jj) * rfact2 |
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| 173 | tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + rivdic(ji,jj) * 5.e-5 * rfact2 |
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| 174 | tra(ji,jj,jk,jpsil) = tra(ji,jj,jk,jpsil) + rivdsi(ji,jj) * rfact2 |
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| 175 | tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + rivdic(ji,jj) * rfact2 |
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| 176 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + ( rivalk(ji,jj) - rno3 * rivdin(ji,jj) ) * rfact2 |
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| 177 | ENDDO |
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| 178 | ENDDO |
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| 179 | ENDDO |
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[3443] | 180 | ENDIF |
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| 181 | |
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| 182 | ! Add the external input of nutrients from nitrogen deposition |
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| 183 | ! ---------------------------------------------------------- |
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| 184 | IF( ln_ndepo ) THEN |
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[5385] | 185 | tra(:,:,1,jpno3) = tra(:,:,1,jpno3) + nitdep(:,:) * rfact2 |
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| 186 | tra(:,:,1,jptal) = tra(:,:,1,jptal) - rno3 * nitdep(:,:) * rfact2 |
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[3443] | 187 | ENDIF |
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| 188 | |
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| 189 | ! Add the external input of iron from sediment mobilization |
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| 190 | ! ------------------------------------------------------ |
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| 191 | IF( ln_ironsed ) THEN |
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[5385] | 192 | tra(:,:,:,jpfer) = tra(:,:,:,jpfer) + ironsed(:,:,:) * rfact2 |
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[3443] | 193 | ! |
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[5385] | 194 | IF( lk_iomput .AND. knt == nrdttrc .AND. iom_use( "Ironsed" ) ) & |
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[3446] | 195 | & CALL iom_put( "Ironsed", ironsed(:,:,:) * 1.e+3 * tmask(:,:,:) ) ! iron inputs from sediments |
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[3443] | 196 | ENDIF |
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| 197 | |
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| 198 | ! Add the external input of iron from hydrothermal vents |
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| 199 | ! ------------------------------------------------------ |
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| 200 | IF( ln_hydrofe ) THEN |
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[5385] | 201 | tra(:,:,:,jpfer) = tra(:,:,:,jpfer) + hydrofe(:,:,:) * rfact2 |
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[3443] | 202 | ! |
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[5385] | 203 | IF( lk_iomput .AND. knt == nrdttrc .AND. iom_use( "HYDR" ) ) & |
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[3446] | 204 | & CALL iom_put( "HYDR", hydrofe(:,:,:) * 1.e+3 * tmask(:,:,:) ) ! hydrothermal iron input |
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[3443] | 205 | ENDIF |
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| 206 | |
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[4521] | 207 | ! OA: Warning, the following part is necessary, especially with Kriest |
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| 208 | ! to avoid CFL problems above the sediments |
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| 209 | ! -------------------------------------------------------------------- |
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| 210 | DO jj = 1, jpj |
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| 211 | DO ji = 1, jpi |
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| 212 | ikt = mbkt(ji,jj) |
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| 213 | zdep = fse3t(ji,jj,ikt) / xstep |
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| 214 | zwsbio4(ji,jj) = MIN( 0.99 * zdep, wsbio4(ji,jj,ikt) ) |
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| 215 | zwscal (ji,jj) = MIN( 0.99 * zdep, wscal (ji,jj,ikt) ) |
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| 216 | zwsbio3(ji,jj) = MIN( 0.99 * zdep, wsbio3(ji,jj,ikt) ) |
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| 217 | END DO |
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| 218 | END DO |
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| 219 | |
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[3443] | 220 | #if ! defined key_sed |
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[3475] | 221 | ! Computation of the sediment denitrification proportion: The metamodel from midlleburg (2006) is being used |
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[4529] | 222 | ! Computation of the fraction of organic matter that is permanently buried from Dunne's model |
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[3443] | 223 | ! ------------------------------------------------------- |
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| 224 | DO jj = 1, jpj |
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| 225 | DO ji = 1, jpi |
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| 226 | IF( tmask(ji,jj,1) == 1 ) THEN |
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| 227 | ikt = mbkt(ji,jj) |
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| 228 | # if defined key_kriest |
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[5385] | 229 | zflx = trb(ji,jj,ikt,jppoc) * zwsbio3(ji,jj) * 1E3 * 1E6 / 1E4 |
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[3443] | 230 | # else |
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[5385] | 231 | zflx = ( trb(ji,jj,ikt,jpgoc) * zwsbio4(ji,jj) & |
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| 232 | & + trb(ji,jj,ikt,jppoc) * zwsbio3(ji,jj) ) * 1E3 * 1E6 / 1E4 |
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[3443] | 233 | #endif |
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| 234 | zflx = LOG10( MAX( 1E-3, zflx ) ) |
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[5385] | 235 | zo2 = LOG10( MAX( 10. , trb(ji,jj,ikt,jpoxy) * 1E6 ) ) |
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| 236 | zno3 = LOG10( MAX( 1. , trb(ji,jj,ikt,jpno3) * 1E6 * rno3 ) ) |
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[3443] | 237 | zdep = LOG10( fsdepw(ji,jj,ikt+1) ) |
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| 238 | zdenit2d(ji,jj) = -2.2567 - 1.185 * zflx - 0.221 * zflx**2 - 0.3995 * zno3 * zo2 + 1.25 * zno3 & |
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| 239 | & + 0.4721 * zo2 - 0.0996 * zdep + 0.4256 * zflx * zo2 |
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| 240 | zdenit2d(ji,jj) = 10.0**( zdenit2d(ji,jj) ) |
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[4529] | 241 | ! |
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[5385] | 242 | zflx = ( trb(ji,jj,ikt,jpgoc) * zwsbio4(ji,jj) & |
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| 243 | & + trb(ji,jj,ikt,jppoc) * zwsbio3(ji,jj) ) * 1E6 |
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[4529] | 244 | zbureff(ji,jj) = 0.013 + 0.53 * zflx**2 / ( 7.0 + zflx )**2 |
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[3443] | 245 | ENDIF |
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| 246 | END DO |
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| 247 | END DO |
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[4529] | 248 | |
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[3443] | 249 | ! Loss of biogenic silicon, Caco3 organic carbon in the sediments. |
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| 250 | ! First, the total loss is computed. |
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| 251 | ! The factor for calcite comes from the alkalinity effect |
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| 252 | ! ------------------------------------------------------------- |
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| 253 | DO jj = 1, jpj |
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| 254 | DO ji = 1, jpi |
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[4800] | 255 | IF( tmask(ji,jj,1) == 1 ) THEN |
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| 256 | ikt = mbkt(ji,jj) |
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[3443] | 257 | # if defined key_kriest |
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[5385] | 258 | zwork1(ji,jj) = trb(ji,jj,ikt,jpgsi) * zwscal (ji,jj) |
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| 259 | zwork2(ji,jj) = trb(ji,jj,ikt,jppoc) * zwsbio3(ji,jj) |
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[3443] | 260 | # else |
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[5385] | 261 | zwork1(ji,jj) = trb(ji,jj,ikt,jpgsi) * zwsbio4(ji,jj) |
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| 262 | zwork2(ji,jj) = trb(ji,jj,ikt,jpgoc) * zwsbio4(ji,jj) + trb(ji,jj,ikt,jppoc) * zwsbio3(ji,jj) |
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[3443] | 263 | # endif |
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[4800] | 264 | ! For calcite, burial efficiency is made a function of saturation |
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| 265 | zfactcal = MIN( excess(ji,jj,ikt), 0.2 ) |
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| 266 | zfactcal = MIN( 1., 1.3 * ( 0.2 - zfactcal ) / ( 0.4 - zfactcal ) ) |
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[5385] | 267 | zwork3(ji,jj) = trb(ji,jj,ikt,jpcal) * zwscal(ji,jj) * 2.e0 * zfactcal |
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[4800] | 268 | ENDIF |
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[3443] | 269 | END DO |
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| 270 | END DO |
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| 271 | zsumsedsi = glob_sum( zwork1(:,:) * e1e2t(:,:) ) * r1_rday |
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| 272 | zsumsedpo4 = glob_sum( zwork2(:,:) * e1e2t(:,:) ) * r1_rday |
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| 273 | zsumsedcal = glob_sum( zwork3(:,:) * e1e2t(:,:) ) * r1_rday |
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| 274 | #endif |
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| 275 | |
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[4148] | 276 | ! This loss is scaled at each bottom grid cell for equilibrating the total budget of silica in the ocean. |
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| 277 | ! Thus, the amount of silica lost in the sediments equal the supply at the surface (dust+rivers) |
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[3443] | 278 | ! ------------------------------------------------------ |
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| 279 | #if ! defined key_sed |
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[4641] | 280 | zrivsil = 1._wp - ( sumdepsi + rivdsiinput * r1_ryyss ) / ( zsumsedsi + rtrn ) |
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[3443] | 281 | #endif |
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| 282 | |
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| 283 | DO jj = 1, jpj |
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| 284 | DO ji = 1, jpi |
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| 285 | ikt = mbkt(ji,jj) |
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[5385] | 286 | zdep = xstep / fse3t(ji,jj,ikt) |
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[4521] | 287 | zws4 = zwsbio4(ji,jj) * zdep |
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| 288 | zwsc = zwscal (ji,jj) * zdep |
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[3443] | 289 | # if defined key_kriest |
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[5385] | 290 | zsiloss = trb(ji,jj,ikt,jpgsi) * zws4 |
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[3443] | 291 | # else |
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[5385] | 292 | zsiloss = trb(ji,jj,ikt,jpgsi) * zwsc |
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[3443] | 293 | # endif |
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[5385] | 294 | zcaloss = trb(ji,jj,ikt,jpcal) * zwsc |
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[3443] | 295 | ! |
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[5385] | 296 | tra(ji,jj,ikt,jpgsi) = tra(ji,jj,ikt,jpgsi) - zsiloss |
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| 297 | tra(ji,jj,ikt,jpcal) = tra(ji,jj,ikt,jpcal) - zcaloss |
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[3443] | 298 | #if ! defined key_sed |
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[5385] | 299 | tra(ji,jj,ikt,jpsil) = tra(ji,jj,ikt,jpsil) + zsiloss * zrivsil |
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[3443] | 300 | zfactcal = MIN( excess(ji,jj,ikt), 0.2 ) |
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| 301 | zfactcal = MIN( 1., 1.3 * ( 0.2 - zfactcal ) / ( 0.4 - zfactcal ) ) |
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[4641] | 302 | zrivalk = 1._wp - ( rivalkinput * r1_ryyss ) * zfactcal / ( zsumsedcal + rtrn ) |
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[5385] | 303 | tra(ji,jj,ikt,jptal) = tra(ji,jj,ikt,jptal) + zcaloss * zrivalk * 2.0 |
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| 304 | tra(ji,jj,ikt,jpdic) = tra(ji,jj,ikt,jpdic) + zcaloss * zrivalk |
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[6315] | 305 | zsedcal(ji,jj) = (1.0 - zrivalk) * zcaloss / zdep |
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| 306 | zsedsi (ji,jj) = (1.0 - zrivsil) * zsiloss / zdep |
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[3443] | 307 | #endif |
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| 308 | END DO |
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| 309 | END DO |
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| 310 | |
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| 311 | DO jj = 1, jpj |
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| 312 | DO ji = 1, jpi |
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[5385] | 313 | ikt = mbkt(ji,jj) |
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| 314 | zdep = xstep / fse3t(ji,jj,ikt) |
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[4521] | 315 | zws4 = zwsbio4(ji,jj) * zdep |
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| 316 | zws3 = zwsbio3(ji,jj) * zdep |
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[4529] | 317 | zrivno3 = 1. - zbureff(ji,jj) |
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[3443] | 318 | # if ! defined key_kriest |
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[5385] | 319 | tra(ji,jj,ikt,jpgoc) = tra(ji,jj,ikt,jpgoc) - trb(ji,jj,ikt,jpgoc) * zws4 |
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| 320 | tra(ji,jj,ikt,jppoc) = tra(ji,jj,ikt,jppoc) - trb(ji,jj,ikt,jppoc) * zws3 |
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| 321 | tra(ji,jj,ikt,jpbfe) = tra(ji,jj,ikt,jpbfe) - trb(ji,jj,ikt,jpbfe) * zws4 |
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| 322 | tra(ji,jj,ikt,jpsfe) = tra(ji,jj,ikt,jpsfe) - trb(ji,jj,ikt,jpsfe) * zws3 |
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| 323 | zwstpoc = trb(ji,jj,ikt,jpgoc) * zws4 + trb(ji,jj,ikt,jppoc) * zws3 |
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[3443] | 324 | # else |
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[5385] | 325 | tra(ji,jj,ikt,jpnum) = tra(ji,jj,ikt,jpnum) - trb(ji,jj,ikt,jpnum) * zws4 |
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| 326 | tra(ji,jj,ikt,jppoc) = tra(ji,jj,ikt,jppoc) - trb(ji,jj,ikt,jppoc) * zws3 |
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| 327 | tra(ji,jj,ikt,jpsfe) = tra(ji,jj,ikt,jpsfe) - trb(ji,jj,ikt,jpsfe) * zws3 |
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| 328 | zwstpoc = trb(ji,jj,ikt,jppoc) * zws3 |
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[3443] | 329 | # endif |
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| 330 | |
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| 331 | #if ! defined key_sed |
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[4148] | 332 | ! The 0.5 factor in zpdenit and zdenitt is to avoid negative NO3 concentration after both denitrification |
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| 333 | ! in the sediments and just above the sediments. Not very clever, but simpliest option. |
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[5385] | 334 | zpdenit = MIN( 0.5 * ( trb(ji,jj,ikt,jpno3) - rtrn ) / rdenit, zdenit2d(ji,jj) * zwstpoc * zrivno3 ) |
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[3443] | 335 | z1pdenit = zwstpoc * zrivno3 - zpdenit |
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[5385] | 336 | zolimit = MIN( ( trb(ji,jj,ikt,jpoxy) - rtrn ) / o2ut, z1pdenit * ( 1.- nitrfac(ji,jj,ikt) ) ) |
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| 337 | zdenitt = MIN( 0.5 * ( trb(ji,jj,ikt,jpno3) - rtrn ) / rdenit, z1pdenit * nitrfac(ji,jj,ikt) ) |
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| 338 | tra(ji,jj,ikt,jpdoc) = tra(ji,jj,ikt,jpdoc) + z1pdenit - zolimit - zdenitt |
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| 339 | tra(ji,jj,ikt,jppo4) = tra(ji,jj,ikt,jppo4) + zpdenit + zolimit + zdenitt |
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| 340 | tra(ji,jj,ikt,jpnh4) = tra(ji,jj,ikt,jpnh4) + zpdenit + zolimit + zdenitt |
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| 341 | tra(ji,jj,ikt,jpno3) = tra(ji,jj,ikt,jpno3) - rdenit * (zpdenit + zdenitt) |
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| 342 | tra(ji,jj,ikt,jpoxy) = tra(ji,jj,ikt,jpoxy) - zolimit * o2ut |
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| 343 | tra(ji,jj,ikt,jptal) = tra(ji,jj,ikt,jptal) + rno3 * (zolimit + (1.+rdenit) * (zpdenit + zdenitt) ) |
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| 344 | tra(ji,jj,ikt,jpdic) = tra(ji,jj,ikt,jpdic) + zpdenit + zolimit + zdenitt |
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[6315] | 345 | sdenit(ji,jj) = rdenit * zpdenit / zdep |
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| 346 | zsedc(ji,jj) = (1. - zrivno3) * zwstpoc / zdep |
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[3443] | 347 | #endif |
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| 348 | END DO |
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| 349 | END DO |
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| 350 | |
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| 351 | ! Nitrogen fixation process |
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[4529] | 352 | ! Small source iron from particulate inorganic iron |
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[3443] | 353 | !----------------------------------- |
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| 354 | DO jk = 1, jpkm1 |
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| 355 | DO jj = 1, jpj |
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| 356 | DO ji = 1, jpi |
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[4529] | 357 | ! ! Potential nitrogen fixation dependant on temperature and iron |
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[3443] | 358 | zlim = ( 1.- xnanono3(ji,jj,jk) - xnanonh4(ji,jj,jk) ) |
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| 359 | IF( zlim <= 0.2 ) zlim = 0.01 |
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| 360 | #if defined key_degrad |
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| 361 | zfact = zlim * rfact2 * facvol(ji,jj,jk) |
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| 362 | #else |
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| 363 | zfact = zlim * rfact2 |
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| 364 | #endif |
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[3446] | 365 | ztrfer = biron(ji,jj,jk) / ( concfediaz + biron(ji,jj,jk) ) |
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[5385] | 366 | ztrpo4 = trb (ji,jj,jk,jppo4) / ( concnnh4 + trb (ji,jj,jk,jppo4) ) |
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| 367 | zlight = ( 1.- EXP( -etot_ndcy(ji,jj,jk) / diazolight ) ) |
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| 368 | nitrpot(ji,jj,jk) = MAX( 0.e0, ( 0.6 * tgfunc(ji,jj,jk) - 2.15 ) * r1_rday ) & |
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[4529] | 369 | & * zfact * MIN( ztrfer, ztrpo4 ) * zlight |
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| 370 | zsoufer(ji,jj,jk) = zlight * 2E-11 / (2E-11 + biron(ji,jj,jk)) |
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[3443] | 371 | END DO |
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| 372 | END DO |
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| 373 | END DO |
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[3496] | 374 | |
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[3443] | 375 | ! Nitrogen change due to nitrogen fixation |
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| 376 | ! ---------------------------------------- |
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| 377 | DO jk = 1, jpkm1 |
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| 378 | DO jj = 1, jpj |
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| 379 | DO ji = 1, jpi |
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[5385] | 380 | zfact = nitrpot(ji,jj,jk) * nitrfix |
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| 381 | tra(ji,jj,jk,jpnh4) = tra(ji,jj,jk,jpnh4) + zfact |
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| 382 | tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + rno3 * zfact |
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| 383 | tra(ji,jj,jk,jpoxy) = tra(ji,jj,jk,jpoxy) + o2nit * zfact |
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| 384 | tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) + concdnh4 / ( concdnh4 + trb(ji,jj,jk,jppo4) ) & |
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| 385 | & * 0.002 * trb(ji,jj,jk,jpdoc) * xstep |
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| 386 | tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + 0.002 * 4E-10 * zsoufer(ji,jj,jk) * xstep |
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[3443] | 387 | END DO |
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| 388 | END DO |
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| 389 | END DO |
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[4529] | 390 | |
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[4996] | 391 | IF( lk_iomput ) THEN |
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[5385] | 392 | IF( knt == nrdttrc ) THEN |
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[4996] | 393 | zfact = 1.e+3 * rfact2r * rno3 ! conversion from molC/l/kt to molN/m3/s |
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[5385] | 394 | IF( iom_use("Nfix" ) ) CALL iom_put( "Nfix", nitrpot(:,:,:) * nitrfix * zfact * tmask(:,:,:) ) ! nitrogen fixation |
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[4996] | 395 | IF( iom_use("INTNFIX") ) THEN ! nitrogen fixation rate in ocean ( vertically integrated ) |
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| 396 | zwork1(:,:) = 0. |
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| 397 | DO jk = 1, jpkm1 |
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[5385] | 398 | zwork1(:,:) = zwork1(:,:) + nitrpot(:,:,jk) * nitrfix * zfact * fse3t(:,:,jk) * tmask(:,:,jk) |
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[4996] | 399 | ENDDO |
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| 400 | CALL iom_put( "INTNFIX" , zwork1 ) |
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[3751] | 401 | ENDIF |
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[6315] | 402 | IF( iom_use("SedCal" ) ) CALL iom_put( "SedCal", zsedcal(:,:) * 1.e+3 ) |
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| 403 | IF( iom_use("SedSi" ) ) CALL iom_put( "SedSi", zsedsi (:,:) * 1.e+3 ) |
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| 404 | IF( iom_use("SedC" ) ) CALL iom_put( "SedC", zsedc (:,:) * 1.e+3 ) |
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| 405 | IF( iom_use("Sdenit" ) ) CALL iom_put( "Sdenit", sdenit (:,:) * 1.e+3 * rno3 ) |
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[3443] | 406 | ENDIF |
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[4996] | 407 | ELSE |
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| 408 | IF( ln_diatrc ) & |
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[5385] | 409 | & trc2d(:,:,jp_pcs0_2d + 12) = nitrpot(:,:,1) * nitrfix * rno3 * 1.e+3 * rfact2r * fse3t(:,:,1) * tmask(:,:,1) |
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[3443] | 410 | ENDIF |
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| 411 | ! |
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| 412 | IF(ln_ctl) THEN ! print mean trends (USEd for debugging) |
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| 413 | WRITE(charout, fmt="('sed ')") |
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| 414 | CALL prt_ctl_trc_info(charout) |
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[5385] | 415 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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[3443] | 416 | ENDIF |
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| 417 | ! |
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[5385] | 418 | CALL wrk_dealloc( jpi, jpj, zdenit2d, zwork1, zwork2, zwork3, zbureff ) |
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[6315] | 419 | CALL wrk_dealloc( jpi, jpj, zsedcal , zsedsi, zsedc ) |
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[4521] | 420 | CALL wrk_dealloc( jpi, jpj, zwsbio3, zwsbio4, zwscal ) |
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[5385] | 421 | CALL wrk_dealloc( jpi, jpj, jpk, zsoufer ) |
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[3443] | 422 | ! |
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| 423 | IF( nn_timing == 1 ) CALL timing_stop('p4z_sed') |
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| 424 | ! |
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[3496] | 425 | 9100 FORMAT(i8,3f10.5) |
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| 426 | ! |
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[3443] | 427 | END SUBROUTINE p4z_sed |
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| 428 | |
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[5385] | 429 | |
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| 430 | INTEGER FUNCTION p4z_sed_alloc() |
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| 431 | !!---------------------------------------------------------------------- |
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| 432 | !! *** ROUTINE p4z_sed_alloc *** |
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| 433 | !!---------------------------------------------------------------------- |
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| 434 | ALLOCATE( nitrpot(jpi,jpj,jpk), sdenit(jpi,jpj), STAT=p4z_sed_alloc ) |
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| 435 | ! |
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| 436 | IF( p4z_sed_alloc /= 0 ) CALL ctl_warn('p4z_sed_alloc: failed to allocate arrays') |
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| 437 | ! |
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| 438 | END FUNCTION p4z_sed_alloc |
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| 439 | |
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| 440 | |
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[3443] | 441 | #else |
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| 442 | !!====================================================================== |
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| 443 | !! Dummy module : No PISCES bio-model |
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| 444 | !!====================================================================== |
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| 445 | CONTAINS |
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| 446 | SUBROUTINE p4z_sed ! Empty routine |
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| 447 | END SUBROUTINE p4z_sed |
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| 448 | #endif |
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| 449 | |
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| 450 | !!====================================================================== |
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[6204] | 451 | END MODULE p4zsed |
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