[3443] | 1 | MODULE p2zexp |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE p2zsed *** |
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| 4 | !! TOP : LOBSTER Compute loss of organic matter in the sediments |
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| 5 | !!====================================================================== |
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| 6 | !! History : - ! 1999 (O. Aumont, C. Le Quere) original code |
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| 7 | !! - ! 2001-05 (O. Aumont, E. Kestenare) add sediment computations |
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| 8 | !! 1.0 ! 2005-06 (A.-S. Kremeur) new temporal integration for sedpoc |
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| 9 | !! 2.0 ! 2007-12 (C. Deltel, G. Madec) F90 |
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| 10 | !! 3.5 ! 2012-03 (C. Ethe) Merge PISCES-LOBSTER |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | !! p2z_exp : Compute loss of organic matter in the sediments |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | USE oce_trc ! |
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| 15 | USE trc |
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| 16 | USE sms_pisces |
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| 17 | USE p2zsed |
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| 18 | USE lbclnk |
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| 19 | USE prtctl_trc ! Print control for debbuging |
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[4990] | 20 | USE trd_oce |
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| 21 | USE trdtrc |
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[3443] | 22 | USE iom |
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| 23 | |
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| 24 | IMPLICIT NONE |
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| 25 | PRIVATE |
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| 26 | |
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| 27 | PUBLIC p2z_exp |
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| 28 | PUBLIC p2z_exp_init |
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| 29 | PUBLIC p2z_exp_alloc |
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| 30 | |
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| 31 | ! |
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| 32 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: dminl !: fraction of sinking POC released in sediments |
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| 33 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: dmin3 !: fraction of sinking POC released at each level |
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| 34 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: sedpocb !: mass of POC in sediments |
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| 35 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: sedpocn !: mass of POC in sediments |
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| 36 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: cmask !: Coastal mask area |
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| 37 | REAL(wp) :: areacot !: surface coastal area |
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| 38 | |
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[5836] | 39 | !! * Substitutions |
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| 40 | # include "vectopt_loop_substitute.h90" |
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[3443] | 41 | !!---------------------------------------------------------------------- |
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[10067] | 42 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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[5215] | 43 | !! $Id$ |
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[10068] | 44 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3443] | 45 | !!---------------------------------------------------------------------- |
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| 46 | CONTAINS |
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| 47 | |
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[11949] | 48 | SUBROUTINE p2z_exp( kt, Kmm, Krhs ) |
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[3443] | 49 | !!--------------------------------------------------------------------- |
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| 50 | !! *** ROUTINE p2z_exp *** |
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| 51 | !! |
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| 52 | !! ** Purpose : MODELS EXPORT OF BIOGENIC MATTER (POC ''SOFT |
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| 53 | !! TISSUE'') AND ITS DISTRIBUTION IN WATER COLUMN |
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| 54 | !! |
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| 55 | !! ** Method : - IN THE SURFACE LAYER POC IS PRODUCED ACCORDING TO |
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| 56 | !! NURTRIENTS AVAILABLE AND GROWTH CONDITIONS. NUTRIENT UPTAKE |
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| 57 | !! KINETICS FOLLOW MICHAELIS-MENTON FORMULATION. |
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| 58 | !! THE TOTAL PARTICLE AMOUNT PRODUCED, IS DISTRIBUTED IN THE WATER |
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| 59 | !! COLUMN BELOW THE SURFACE LAYER. |
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| 60 | !!--------------------------------------------------------------------- |
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| 61 | !! |
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[11949] | 62 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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| 63 | INTEGER, INTENT( in ) :: Kmm, Krhs ! time level indices |
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[3443] | 64 | !! |
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| 65 | INTEGER :: ji, jj, jk, jl, ikt |
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| 66 | REAL(wp) :: zgeolpoc, zfact, zwork, ze3t, zsedpocd, zmaskt |
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[9125] | 67 | REAL(wp), DIMENSION(jpi,jpj) :: zsedpoca |
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[3443] | 68 | CHARACTER (len=25) :: charout |
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| 69 | !!--------------------------------------------------------------------- |
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| 70 | ! |
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[9124] | 71 | IF( ln_timing ) CALL timing_start('p2z_exp') |
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[3443] | 72 | ! |
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[11949] | 73 | IF( kt == nittrc000 ) CALL p2z_exp_init( Kmm ) |
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[3443] | 74 | |
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| 75 | zsedpoca(:,:) = 0. |
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| 76 | |
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| 77 | |
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| 78 | ! VERTICAL DISTRIBUTION OF NEWLY PRODUCED BIOGENIC |
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| 79 | ! POC IN THE WATER COLUMN |
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| 80 | ! (PARTS OF NEWLY FORMED MATTER REMAINING IN THE DIFFERENT |
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| 81 | ! LAYERS IS DETERMINED BY DMIN3 DEFINED IN sms_p2z.F90 |
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| 82 | ! ---------------------------------------------------------------------- |
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| 83 | DO jk = 1, jpkm1 |
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| 84 | DO jj = 2, jpjm1 |
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| 85 | DO ji = fs_2, fs_jpim1 |
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[11949] | 86 | ze3t = 1. / e3t(ji,jj,jk,Kmm) |
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| 87 | tr(ji,jj,jk,jpno3,Krhs) = tr(ji,jj,jk,jpno3,Krhs) + ze3t * dmin3(ji,jj,jk) * xksi(ji,jj) |
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[3443] | 88 | END DO |
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| 89 | END DO |
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| 90 | END DO |
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| 91 | |
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| 92 | ! Find the last level of the water column |
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| 93 | ! Compute fluxes due to sinking particles (slow) |
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| 94 | |
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| 95 | |
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| 96 | zgeolpoc = 0.e0 ! Initialization |
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| 97 | ! Release of nutrients from the "simple" sediment |
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| 98 | DO jj = 2, jpjm1 |
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| 99 | DO ji = fs_2, fs_jpim1 |
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| 100 | ikt = mbkt(ji,jj) |
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[11949] | 101 | tr(ji,jj,ikt,jpno3,Krhs) = tr(ji,jj,ikt,jpno3,Krhs) + sedlam * sedpocn(ji,jj) / e3t(ji,jj,ikt,Kmm) |
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[3443] | 102 | ! Deposition of organic matter in the sediment |
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[11949] | 103 | zwork = vsed * tr(ji,jj,ikt,jpdet,Kmm) |
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[3446] | 104 | zsedpoca(ji,jj) = ( zwork + dminl(ji,jj) * xksi(ji,jj) & |
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[3443] | 105 | & - sedlam * sedpocn(ji,jj) - sedlostpoc * sedpocn(ji,jj) ) * rdt |
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| 106 | zgeolpoc = zgeolpoc + sedlostpoc * sedpocn(ji,jj) * e1e2t(ji,jj) |
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| 107 | END DO |
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| 108 | END DO |
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| 109 | |
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| 110 | DO jj = 2, jpjm1 |
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| 111 | DO ji = fs_2, fs_jpim1 |
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[11949] | 112 | tr(ji,jj,1,jpno3,Krhs) = tr(ji,jj,1,jpno3,Krhs) + zgeolpoc * cmask(ji,jj) / areacot / e3t(ji,jj,1,Kmm) |
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[3443] | 113 | END DO |
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| 114 | END DO |
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| 115 | |
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[10425] | 116 | CALL lbc_lnk( 'p2zexp', sedpocn, 'T', 1. ) |
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[3443] | 117 | |
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| 118 | ! Oa & Ek: diagnostics depending on jpdia2d ! left as example |
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[7646] | 119 | IF( lk_iomput ) CALL iom_put( "SEDPOC" , sedpocn ) |
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[3443] | 120 | |
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| 121 | |
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| 122 | ! Time filter and swap of arrays |
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| 123 | ! ------------------------------ |
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| 124 | IF( neuler == 0 .AND. kt == nittrc000 ) THEN ! Euler time-stepping at first time-step |
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| 125 | ! ! (only swap) |
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| 126 | sedpocn(:,:) = zsedpoca(:,:) |
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| 127 | ! |
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| 128 | ELSE |
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| 129 | ! |
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| 130 | DO jj = 1, jpj |
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| 131 | DO ji = 1, jpi |
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| 132 | zsedpocd = zsedpoca(ji,jj) - 2. * sedpocn(ji,jj) + sedpocb(ji,jj) ! time laplacian on tracers |
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| 133 | sedpocb(ji,jj) = sedpocn(ji,jj) + atfp * zsedpocd ! sedpocb <-- filtered sedpocn |
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| 134 | sedpocn(ji,jj) = zsedpoca(ji,jj) ! sedpocn <-- sedpoca |
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| 135 | END DO |
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| 136 | END DO |
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| 137 | ! |
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| 138 | ENDIF |
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| 139 | ! |
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| 140 | IF( lrst_trc ) THEN |
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| 141 | IF(lwp) WRITE(numout,*) |
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| 142 | IF(lwp) WRITE(numout,*) 'p2z_exp : POC in sediment fields written in ocean restart file ', & |
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| 143 | & 'at it= ', kt,' date= ', ndastp |
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| 144 | IF(lwp) WRITE(numout,*) '~~~~' |
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| 145 | CALL iom_rstput( kt, nitrst, numrtw, 'SEDB'//ctrcnm(jpdet), sedpocb(:,:) ) |
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| 146 | CALL iom_rstput( kt, nitrst, numrtw, 'SEDN'//ctrcnm(jpdet), sedpocn(:,:) ) |
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| 147 | ENDIF |
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| 148 | ! |
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[12236] | 149 | IF(sn_cfctl%l_prttrc) THEN ! print mean trends (used for debugging) |
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[3443] | 150 | WRITE(charout, FMT="('exp')") |
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| 151 | CALL prt_ctl_trc_info(charout) |
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[11949] | 152 | CALL prt_ctl_trc(tab4d=tr(:,:,:,:,Krhs), mask=tmask, clinfo=ctrcnm) |
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[3443] | 153 | ENDIF |
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| 154 | ! |
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[9124] | 155 | IF( ln_timing ) CALL timing_stop('p2z_exp') |
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[3443] | 156 | ! |
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| 157 | END SUBROUTINE p2z_exp |
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| 158 | |
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[9124] | 159 | |
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[11949] | 160 | SUBROUTINE p2z_exp_init( Kmm ) |
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[3443] | 161 | !!---------------------------------------------------------------------- |
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| 162 | !! *** ROUTINE p4z_exp_init *** |
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| 163 | !! ** purpose : specific initialisation for export |
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| 164 | !!---------------------------------------------------------------------- |
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[11949] | 165 | INTEGER, INTENT(in) :: Kmm ! time level index |
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[3443] | 166 | INTEGER :: ji, jj, jk |
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| 167 | REAL(wp) :: zmaskt, zfluo, zfluu |
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[9125] | 168 | REAL(wp), DIMENSION(jpi,jpj ) :: zrro |
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| 169 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zdm0 |
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[3443] | 170 | !!--------------------------------------------------------------------- |
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[9124] | 171 | ! |
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[3443] | 172 | IF(lwp) THEN |
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| 173 | WRITE(numout,*) |
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| 174 | WRITE(numout,*) ' p2z_exp: LOBSTER export' |
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| 175 | WRITE(numout,*) ' ~~~~~~~' |
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| 176 | WRITE(numout,*) ' compute remineralisation-damping arrays for tracers' |
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| 177 | ENDIF |
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| 178 | ! |
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| 179 | |
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| 180 | ! Calculate vertical distribution of newly formed biogenic poc |
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| 181 | ! in the water column in the case of max. possible bottom depth |
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| 182 | ! ------------------------------------------------------------ |
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| 183 | zdm0 = 0._wp |
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| 184 | zrro = 1._wp |
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| 185 | DO jk = jpkb, jpkm1 |
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| 186 | DO jj = 1, jpj |
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| 187 | DO ji = 1, jpi |
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[11949] | 188 | zfluo = ( gdepw(ji,jj,jk ,Kmm) / gdepw(ji,jj,jpkb,Kmm) )**xhr |
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| 189 | zfluu = ( gdepw(ji,jj,jk+1,Kmm) / gdepw(ji,jj,jpkb,Kmm) )**xhr |
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[3443] | 190 | IF( zfluo.GT.1. ) zfluo = 1._wp |
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| 191 | zdm0(ji,jj,jk) = zfluo - zfluu |
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| 192 | IF( jk <= jpkb-1 ) zdm0(ji,jj,jk) = 0._wp |
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| 193 | zrro(ji,jj) = zrro(ji,jj) - zdm0(ji,jj,jk) |
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| 194 | END DO |
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| 195 | END DO |
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| 196 | END DO |
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| 197 | ! |
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| 198 | zdm0(:,:,jpk) = zrro(:,:) |
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| 199 | |
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| 200 | ! Calculate vertical distribution of newly formed biogenic poc |
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| 201 | ! in the water column with realistic topography (first "dry" layer |
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| 202 | ! contains total fraction, which has passed to the upper layers) |
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| 203 | ! ---------------------------------------------------------------------- |
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| 204 | dminl(:,:) = 0._wp |
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| 205 | dmin3(:,:,:) = zdm0 |
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| 206 | DO jk = 1, jpk |
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| 207 | DO jj = 1, jpj |
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| 208 | DO ji = 1, jpi |
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| 209 | IF( tmask(ji,jj,jk) == 0._wp ) THEN |
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| 210 | dminl(ji,jj) = dminl(ji,jj) + dmin3(ji,jj,jk) |
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| 211 | dmin3(ji,jj,jk) = 0._wp |
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| 212 | ENDIF |
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| 213 | END DO |
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| 214 | END DO |
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| 215 | END DO |
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| 216 | |
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| 217 | DO jj = 1, jpj |
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| 218 | DO ji = 1, jpi |
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| 219 | IF( tmask(ji,jj,1) == 0 ) dmin3(ji,jj,1) = 0._wp |
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| 220 | END DO |
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| 221 | END DO |
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| 222 | |
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| 223 | ! Coastal mask |
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| 224 | cmask(:,:) = 0._wp |
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| 225 | DO jj = 2, jpjm1 |
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| 226 | DO ji = fs_2, fs_jpim1 |
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| 227 | IF( tmask(ji,jj,1) /= 0. ) THEN |
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| 228 | zmaskt = tmask(ji+1,jj,1) * tmask(ji-1,jj,1) * tmask(ji,jj+1,1) * tmask(ji,jj-1,1) |
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| 229 | IF( zmaskt == 0. ) cmask(ji,jj) = 1._wp |
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| 230 | END IF |
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| 231 | END DO |
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| 232 | END DO |
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[10425] | 233 | CALL lbc_lnk( 'p2zexp', cmask , 'T', 1. ) ! lateral boundary conditions on cmask (sign unchanged) |
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| 234 | areacot = glob_sum( 'p2zexp', e1e2t(:,:) * cmask(:,:) ) |
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[3443] | 235 | ! |
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| 236 | IF( ln_rsttr ) THEN |
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| 237 | CALL iom_get( numrtr, jpdom_autoglo, 'SEDB'//ctrcnm(jpdet), sedpocb(:,:) ) |
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| 238 | CALL iom_get( numrtr, jpdom_autoglo, 'SEDN'//ctrcnm(jpdet), sedpocn(:,:) ) |
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| 239 | ELSE |
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| 240 | sedpocb(:,:) = 0._wp |
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| 241 | sedpocn(:,:) = 0._wp |
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| 242 | ENDIF |
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| 243 | ! |
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| 244 | END SUBROUTINE p2z_exp_init |
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| 245 | |
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| 246 | INTEGER FUNCTION p2z_exp_alloc() |
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| 247 | !!---------------------------------------------------------------------- |
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| 248 | !! *** ROUTINE p2z_exp_alloc *** |
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| 249 | !!---------------------------------------------------------------------- |
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| 250 | ALLOCATE( cmask(jpi,jpj) , dminl(jpi,jpj) , dmin3(jpi,jpj,jpk), & |
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| 251 | & sedpocb(jpi,jpj) , sedpocn(jpi,jpj), STAT=p2z_exp_alloc ) |
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[10425] | 252 | IF( p2z_exp_alloc /= 0 ) CALL ctl_stop( 'STOP', 'p2z_exp_alloc : failed to allocate arrays.' ) |
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[3443] | 253 | ! |
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| 254 | END FUNCTION p2z_exp_alloc |
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| 255 | |
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| 256 | !!====================================================================== |
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[9788] | 257 | END MODULE p2zexp |
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