[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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[9598] | 42 | !! NEMO/TOP 3.3 , NEMO Consortium (2018) |
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[9950] | 43 | !! $Id$ |
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[9598] | 44 | !! Software governed by the CeCILL licence (./LICENSE) |
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[3443] | 45 | !!---------------------------------------------------------------------- |
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| 46 | CONTAINS |
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| 47 | |
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| 48 | SUBROUTINE p2z_exp( kt ) |
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| 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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| 62 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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| 63 | !! |
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| 64 | INTEGER :: ji, jj, jk, jl, ikt |
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| 65 | REAL(wp) :: zgeolpoc, zfact, zwork, ze3t, zsedpocd, zmaskt |
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[9125] | 66 | REAL(wp), DIMENSION(jpi,jpj) :: zsedpoca |
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[3443] | 67 | CHARACTER (len=25) :: charout |
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| 68 | !!--------------------------------------------------------------------- |
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| 69 | ! |
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[9124] | 70 | IF( ln_timing ) CALL timing_start('p2z_exp') |
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[3443] | 71 | ! |
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| 72 | IF( kt == nittrc000 ) CALL p2z_exp_init |
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| 73 | |
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| 74 | zsedpoca(:,:) = 0. |
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| 75 | |
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| 76 | |
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| 77 | ! VERTICAL DISTRIBUTION OF NEWLY PRODUCED BIOGENIC |
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| 78 | ! POC IN THE WATER COLUMN |
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| 79 | ! (PARTS OF NEWLY FORMED MATTER REMAINING IN THE DIFFERENT |
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| 80 | ! LAYERS IS DETERMINED BY DMIN3 DEFINED IN sms_p2z.F90 |
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| 81 | ! ---------------------------------------------------------------------- |
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| 82 | DO jk = 1, jpkm1 |
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| 83 | DO jj = 2, jpjm1 |
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| 84 | DO ji = fs_2, fs_jpim1 |
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[6140] | 85 | ze3t = 1. / e3t_n(ji,jj,jk) |
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[3446] | 86 | tra(ji,jj,jk,jpno3) = tra(ji,jj,jk,jpno3) + ze3t * dmin3(ji,jj,jk) * xksi(ji,jj) |
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[3443] | 87 | END DO |
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| 88 | END DO |
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| 89 | END DO |
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| 90 | |
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| 91 | ! Find the last level of the water column |
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| 92 | ! Compute fluxes due to sinking particles (slow) |
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| 93 | |
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| 94 | |
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| 95 | zgeolpoc = 0.e0 ! Initialization |
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| 96 | ! Release of nutrients from the "simple" sediment |
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| 97 | DO jj = 2, jpjm1 |
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| 98 | DO ji = fs_2, fs_jpim1 |
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| 99 | ikt = mbkt(ji,jj) |
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[6140] | 100 | tra(ji,jj,ikt,jpno3) = tra(ji,jj,ikt,jpno3) + sedlam * sedpocn(ji,jj) / e3t_n(ji,jj,ikt) |
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[3443] | 101 | ! Deposition of organic matter in the sediment |
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| 102 | zwork = vsed * trn(ji,jj,ikt,jpdet) |
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[3446] | 103 | zsedpoca(ji,jj) = ( zwork + dminl(ji,jj) * xksi(ji,jj) & |
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[3443] | 104 | & - sedlam * sedpocn(ji,jj) - sedlostpoc * sedpocn(ji,jj) ) * rdt |
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| 105 | zgeolpoc = zgeolpoc + sedlostpoc * sedpocn(ji,jj) * e1e2t(ji,jj) |
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| 106 | END DO |
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| 107 | END DO |
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| 108 | |
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| 109 | DO jj = 2, jpjm1 |
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| 110 | DO ji = fs_2, fs_jpim1 |
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[6140] | 111 | tra(ji,jj,1,jpno3) = tra(ji,jj,1,jpno3) + zgeolpoc * cmask(ji,jj) / areacot / e3t_n(ji,jj,1) |
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[3443] | 112 | END DO |
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| 113 | END DO |
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| 114 | |
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| 115 | CALL lbc_lnk( sedpocn, 'T', 1. ) |
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| 116 | |
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| 117 | ! Oa & Ek: diagnostics depending on jpdia2d ! left as example |
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[7646] | 118 | IF( lk_iomput ) CALL iom_put( "SEDPOC" , sedpocn ) |
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[3443] | 119 | |
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| 120 | |
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| 121 | ! Time filter and swap of arrays |
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| 122 | ! ------------------------------ |
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| 123 | IF( neuler == 0 .AND. kt == nittrc000 ) THEN ! Euler time-stepping at first time-step |
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| 124 | ! ! (only swap) |
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| 125 | sedpocn(:,:) = zsedpoca(:,:) |
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| 126 | ! |
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| 127 | ELSE |
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| 128 | ! |
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| 129 | DO jj = 1, jpj |
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| 130 | DO ji = 1, jpi |
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| 131 | zsedpocd = zsedpoca(ji,jj) - 2. * sedpocn(ji,jj) + sedpocb(ji,jj) ! time laplacian on tracers |
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| 132 | sedpocb(ji,jj) = sedpocn(ji,jj) + atfp * zsedpocd ! sedpocb <-- filtered sedpocn |
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| 133 | sedpocn(ji,jj) = zsedpoca(ji,jj) ! sedpocn <-- sedpoca |
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| 134 | END DO |
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| 135 | END DO |
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| 136 | ! |
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| 137 | ENDIF |
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| 138 | ! |
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| 139 | IF( lrst_trc ) THEN |
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| 140 | IF(lwp) WRITE(numout,*) |
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| 141 | IF(lwp) WRITE(numout,*) 'p2z_exp : POC in sediment fields written in ocean restart file ', & |
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| 142 | & 'at it= ', kt,' date= ', ndastp |
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| 143 | IF(lwp) WRITE(numout,*) '~~~~' |
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| 144 | CALL iom_rstput( kt, nitrst, numrtw, 'SEDB'//ctrcnm(jpdet), sedpocb(:,:) ) |
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| 145 | CALL iom_rstput( kt, nitrst, numrtw, 'SEDN'//ctrcnm(jpdet), sedpocn(:,:) ) |
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| 146 | ENDIF |
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| 147 | ! |
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| 148 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 149 | WRITE(charout, FMT="('exp')") |
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| 150 | CALL prt_ctl_trc_info(charout) |
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| 151 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 152 | ENDIF |
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| 153 | ! |
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[9124] | 154 | IF( ln_timing ) CALL timing_stop('p2z_exp') |
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[3443] | 155 | ! |
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| 156 | END SUBROUTINE p2z_exp |
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| 157 | |
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[9124] | 158 | |
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[3443] | 159 | SUBROUTINE p2z_exp_init |
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| 160 | !!---------------------------------------------------------------------- |
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| 161 | !! *** ROUTINE p4z_exp_init *** |
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| 162 | !! ** purpose : specific initialisation for export |
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| 163 | !!---------------------------------------------------------------------- |
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| 164 | INTEGER :: ji, jj, jk |
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| 165 | REAL(wp) :: zmaskt, zfluo, zfluu |
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[9125] | 166 | REAL(wp), DIMENSION(jpi,jpj ) :: zrro |
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| 167 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zdm0 |
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[3443] | 168 | !!--------------------------------------------------------------------- |
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[9124] | 169 | ! |
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[3443] | 170 | IF(lwp) THEN |
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| 171 | WRITE(numout,*) |
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| 172 | WRITE(numout,*) ' p2z_exp: LOBSTER export' |
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| 173 | WRITE(numout,*) ' ~~~~~~~' |
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| 174 | WRITE(numout,*) ' compute remineralisation-damping arrays for tracers' |
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| 175 | ENDIF |
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| 176 | ! |
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| 177 | |
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| 178 | ! Calculate vertical distribution of newly formed biogenic poc |
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| 179 | ! in the water column in the case of max. possible bottom depth |
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| 180 | ! ------------------------------------------------------------ |
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| 181 | zdm0 = 0._wp |
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| 182 | zrro = 1._wp |
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| 183 | DO jk = jpkb, jpkm1 |
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| 184 | DO jj = 1, jpj |
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| 185 | DO ji = 1, jpi |
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[6140] | 186 | zfluo = ( gdepw_n(ji,jj,jk ) / gdepw_n(ji,jj,jpkb) )**xhr |
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| 187 | zfluu = ( gdepw_n(ji,jj,jk+1) / gdepw_n(ji,jj,jpkb) )**xhr |
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[3443] | 188 | IF( zfluo.GT.1. ) zfluo = 1._wp |
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| 189 | zdm0(ji,jj,jk) = zfluo - zfluu |
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| 190 | IF( jk <= jpkb-1 ) zdm0(ji,jj,jk) = 0._wp |
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| 191 | zrro(ji,jj) = zrro(ji,jj) - zdm0(ji,jj,jk) |
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| 192 | END DO |
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| 193 | END DO |
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| 194 | END DO |
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| 195 | ! |
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| 196 | zdm0(:,:,jpk) = zrro(:,:) |
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| 197 | |
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| 198 | ! Calculate vertical distribution of newly formed biogenic poc |
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| 199 | ! in the water column with realistic topography (first "dry" layer |
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| 200 | ! contains total fraction, which has passed to the upper layers) |
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| 201 | ! ---------------------------------------------------------------------- |
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| 202 | dminl(:,:) = 0._wp |
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| 203 | dmin3(:,:,:) = zdm0 |
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| 204 | DO jk = 1, jpk |
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| 205 | DO jj = 1, jpj |
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| 206 | DO ji = 1, jpi |
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| 207 | IF( tmask(ji,jj,jk) == 0._wp ) THEN |
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| 208 | dminl(ji,jj) = dminl(ji,jj) + dmin3(ji,jj,jk) |
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| 209 | dmin3(ji,jj,jk) = 0._wp |
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| 210 | ENDIF |
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| 211 | END DO |
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| 212 | END DO |
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| 213 | END DO |
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| 214 | |
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| 215 | DO jj = 1, jpj |
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| 216 | DO ji = 1, jpi |
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| 217 | IF( tmask(ji,jj,1) == 0 ) dmin3(ji,jj,1) = 0._wp |
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| 218 | END DO |
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| 219 | END DO |
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| 220 | |
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| 221 | ! Coastal mask |
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| 222 | cmask(:,:) = 0._wp |
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| 223 | DO jj = 2, jpjm1 |
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| 224 | DO ji = fs_2, fs_jpim1 |
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| 225 | IF( tmask(ji,jj,1) /= 0. ) THEN |
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| 226 | 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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| 227 | IF( zmaskt == 0. ) cmask(ji,jj) = 1._wp |
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| 228 | END IF |
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| 229 | END DO |
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| 230 | END DO |
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| 231 | CALL lbc_lnk( cmask , 'T', 1. ) ! lateral boundary conditions on cmask (sign unchanged) |
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| 232 | areacot = glob_sum( e1e2t(:,:) * cmask(:,:) ) |
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| 233 | ! |
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| 234 | IF( ln_rsttr ) THEN |
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| 235 | CALL iom_get( numrtr, jpdom_autoglo, 'SEDB'//ctrcnm(jpdet), sedpocb(:,:) ) |
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| 236 | CALL iom_get( numrtr, jpdom_autoglo, 'SEDN'//ctrcnm(jpdet), sedpocn(:,:) ) |
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| 237 | ELSE |
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| 238 | sedpocb(:,:) = 0._wp |
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| 239 | sedpocn(:,:) = 0._wp |
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| 240 | ENDIF |
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| 241 | ! |
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| 242 | END SUBROUTINE p2z_exp_init |
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| 243 | |
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| 244 | INTEGER FUNCTION p2z_exp_alloc() |
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| 245 | !!---------------------------------------------------------------------- |
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| 246 | !! *** ROUTINE p2z_exp_alloc *** |
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| 247 | !!---------------------------------------------------------------------- |
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| 248 | ALLOCATE( cmask(jpi,jpj) , dminl(jpi,jpj) , dmin3(jpi,jpj,jpk), & |
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| 249 | & sedpocb(jpi,jpj) , sedpocn(jpi,jpj), STAT=p2z_exp_alloc ) |
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| 250 | IF( p2z_exp_alloc /= 0 ) CALL ctl_warn('p2z_exp_alloc : failed to allocate arrays.') |
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| 251 | ! |
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| 252 | END FUNCTION p2z_exp_alloc |
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| 253 | |
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| 254 | !!====================================================================== |
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[9788] | 255 | END MODULE p2zexp |
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