[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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[13286] | 19 | USE prtctl ! 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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[12377] | 40 | # include "do_loop_substitute.h90" |
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[13237] | 41 | # include "domzgr_substitute.h90" |
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[3443] | 42 | !!---------------------------------------------------------------------- |
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[10067] | 43 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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[5215] | 44 | !! $Id$ |
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[10068] | 45 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3443] | 46 | !!---------------------------------------------------------------------- |
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| 47 | CONTAINS |
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| 48 | |
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[12377] | 49 | SUBROUTINE p2z_exp( kt, Kmm, Krhs ) |
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[3443] | 50 | !!--------------------------------------------------------------------- |
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| 51 | !! *** ROUTINE p2z_exp *** |
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| 52 | !! |
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| 53 | !! ** Purpose : MODELS EXPORT OF BIOGENIC MATTER (POC ''SOFT |
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| 54 | !! TISSUE'') AND ITS DISTRIBUTION IN WATER COLUMN |
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| 55 | !! |
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| 56 | !! ** Method : - IN THE SURFACE LAYER POC IS PRODUCED ACCORDING TO |
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| 57 | !! NURTRIENTS AVAILABLE AND GROWTH CONDITIONS. NUTRIENT UPTAKE |
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| 58 | !! KINETICS FOLLOW MICHAELIS-MENTON FORMULATION. |
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| 59 | !! THE TOTAL PARTICLE AMOUNT PRODUCED, IS DISTRIBUTED IN THE WATER |
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| 60 | !! COLUMN BELOW THE SURFACE LAYER. |
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| 61 | !!--------------------------------------------------------------------- |
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| 62 | !! |
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[12377] | 63 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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| 64 | INTEGER, INTENT( in ) :: Kmm, Krhs ! time level indices |
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[3443] | 65 | !! |
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| 66 | INTEGER :: ji, jj, jk, jl, ikt |
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| 67 | REAL(wp) :: zgeolpoc, zfact, zwork, ze3t, zsedpocd, zmaskt |
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[9125] | 68 | REAL(wp), DIMENSION(jpi,jpj) :: zsedpoca |
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[3443] | 69 | CHARACTER (len=25) :: charout |
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| 70 | !!--------------------------------------------------------------------- |
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| 71 | ! |
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[9124] | 72 | IF( ln_timing ) CALL timing_start('p2z_exp') |
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[3443] | 73 | ! |
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[12377] | 74 | IF( kt == nittrc000 ) CALL p2z_exp_init( Kmm ) |
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[3443] | 75 | |
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| 76 | zsedpoca(:,:) = 0. |
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| 77 | |
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| 78 | |
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| 79 | ! VERTICAL DISTRIBUTION OF NEWLY PRODUCED BIOGENIC |
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| 80 | ! POC IN THE WATER COLUMN |
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| 81 | ! (PARTS OF NEWLY FORMED MATTER REMAINING IN THE DIFFERENT |
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| 82 | ! LAYERS IS DETERMINED BY DMIN3 DEFINED IN sms_p2z.F90 |
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| 83 | ! ---------------------------------------------------------------------- |
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[13295] | 84 | DO_3D( 0, 0, 0, 0, 1, jpkm1 ) |
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[12377] | 85 | ze3t = 1. / e3t(ji,jj,jk,Kmm) |
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| 86 | tr(ji,jj,jk,jpno3,Krhs) = tr(ji,jj,jk,jpno3,Krhs) + ze3t * dmin3(ji,jj,jk) * xksi(ji,jj) |
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| 87 | END_3D |
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[3443] | 88 | |
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| 89 | ! Find the last level of the water column |
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| 90 | ! Compute fluxes due to sinking particles (slow) |
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| 91 | |
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| 92 | |
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| 93 | zgeolpoc = 0.e0 ! Initialization |
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| 94 | ! Release of nutrients from the "simple" sediment |
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[13295] | 95 | DO_2D( 0, 0, 0, 0 ) |
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[12377] | 96 | ikt = mbkt(ji,jj) |
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| 97 | 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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| 98 | ! Deposition of organic matter in the sediment |
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| 99 | zwork = vsed * tr(ji,jj,ikt,jpdet,Kmm) |
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| 100 | zsedpoca(ji,jj) = ( zwork + dminl(ji,jj) * xksi(ji,jj) & |
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[12489] | 101 | & - sedlam * sedpocn(ji,jj) - sedlostpoc * sedpocn(ji,jj) ) * rn_Dt |
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[12377] | 102 | zgeolpoc = zgeolpoc + sedlostpoc * sedpocn(ji,jj) * e1e2t(ji,jj) |
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| 103 | END_2D |
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[3443] | 104 | |
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[13295] | 105 | DO_2D( 0, 0, 0, 0 ) |
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[12377] | 106 | 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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| 107 | END_2D |
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[3443] | 108 | |
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[13226] | 109 | CALL lbc_lnk( 'p2zexp', sedpocn, 'T', 1.0_wp ) |
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[3443] | 110 | |
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| 111 | ! Oa & Ek: diagnostics depending on jpdia2d ! left as example |
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[7646] | 112 | IF( lk_iomput ) CALL iom_put( "SEDPOC" , sedpocn ) |
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[3443] | 113 | |
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| 114 | |
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| 115 | ! Time filter and swap of arrays |
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| 116 | ! ------------------------------ |
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[12489] | 117 | IF( l_1st_euler ) THEN ! Euler time-stepping at first time-step |
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| 118 | ! ! (only swap) |
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[3443] | 119 | sedpocn(:,:) = zsedpoca(:,:) |
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| 120 | ! |
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| 121 | ELSE |
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| 122 | ! |
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[13295] | 123 | DO_2D( 1, 1, 1, 1 ) |
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[12377] | 124 | zsedpocd = zsedpoca(ji,jj) - 2. * sedpocn(ji,jj) + sedpocb(ji,jj) ! time laplacian on tracers |
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[12489] | 125 | sedpocb(ji,jj) = sedpocn(ji,jj) + rn_atfp * zsedpocd ! sedpocb <-- filtered sedpocn |
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[12377] | 126 | sedpocn(ji,jj) = zsedpoca(ji,jj) ! sedpocn <-- sedpoca |
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| 127 | END_2D |
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[3443] | 128 | ! |
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| 129 | ENDIF |
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| 130 | ! |
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| 131 | IF( lrst_trc ) THEN |
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| 132 | IF(lwp) WRITE(numout,*) |
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| 133 | IF(lwp) WRITE(numout,*) 'p2z_exp : POC in sediment fields written in ocean restart file ', & |
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| 134 | & 'at it= ', kt,' date= ', ndastp |
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| 135 | IF(lwp) WRITE(numout,*) '~~~~' |
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| 136 | CALL iom_rstput( kt, nitrst, numrtw, 'SEDB'//ctrcnm(jpdet), sedpocb(:,:) ) |
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| 137 | CALL iom_rstput( kt, nitrst, numrtw, 'SEDN'//ctrcnm(jpdet), sedpocn(:,:) ) |
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| 138 | ENDIF |
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| 139 | ! |
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[12377] | 140 | IF(sn_cfctl%l_prttrc) THEN ! print mean trends (used for debugging) |
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[3443] | 141 | WRITE(charout, FMT="('exp')") |
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[13286] | 142 | CALL prt_ctl_info( charout, cdcomp = 'top' ) |
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| 143 | CALL prt_ctl(tab4d_1=tr(:,:,:,:,Krhs), mask1=tmask, clinfo=ctrcnm) |
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[3443] | 144 | ENDIF |
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| 145 | ! |
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[9124] | 146 | IF( ln_timing ) CALL timing_stop('p2z_exp') |
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[3443] | 147 | ! |
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| 148 | END SUBROUTINE p2z_exp |
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| 149 | |
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[9124] | 150 | |
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[12377] | 151 | SUBROUTINE p2z_exp_init( Kmm ) |
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[3443] | 152 | !!---------------------------------------------------------------------- |
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| 153 | !! *** ROUTINE p4z_exp_init *** |
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| 154 | !! ** purpose : specific initialisation for export |
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| 155 | !!---------------------------------------------------------------------- |
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[12377] | 156 | INTEGER, INTENT(in) :: Kmm ! time level index |
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[3443] | 157 | INTEGER :: ji, jj, jk |
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| 158 | REAL(wp) :: zmaskt, zfluo, zfluu |
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[9125] | 159 | REAL(wp), DIMENSION(jpi,jpj ) :: zrro |
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| 160 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zdm0 |
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[3443] | 161 | !!--------------------------------------------------------------------- |
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[9124] | 162 | ! |
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[3443] | 163 | IF(lwp) THEN |
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| 164 | WRITE(numout,*) |
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| 165 | WRITE(numout,*) ' p2z_exp: LOBSTER export' |
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| 166 | WRITE(numout,*) ' ~~~~~~~' |
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| 167 | WRITE(numout,*) ' compute remineralisation-damping arrays for tracers' |
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| 168 | ENDIF |
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| 169 | ! |
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| 170 | |
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| 171 | ! Calculate vertical distribution of newly formed biogenic poc |
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| 172 | ! in the water column in the case of max. possible bottom depth |
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| 173 | ! ------------------------------------------------------------ |
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| 174 | zdm0 = 0._wp |
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| 175 | zrro = 1._wp |
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[13295] | 176 | DO_3D( 1, 1, 1, 1, jpkb, jpkm1 ) |
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[12377] | 177 | zfluo = ( gdepw(ji,jj,jk ,Kmm) / gdepw(ji,jj,jpkb,Kmm) )**xhr |
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| 178 | zfluu = ( gdepw(ji,jj,jk+1,Kmm) / gdepw(ji,jj,jpkb,Kmm) )**xhr |
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| 179 | IF( zfluo.GT.1. ) zfluo = 1._wp |
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| 180 | zdm0(ji,jj,jk) = zfluo - zfluu |
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| 181 | IF( jk <= jpkb-1 ) zdm0(ji,jj,jk) = 0._wp |
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| 182 | zrro(ji,jj) = zrro(ji,jj) - zdm0(ji,jj,jk) |
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| 183 | END_3D |
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[3443] | 184 | ! |
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| 185 | zdm0(:,:,jpk) = zrro(:,:) |
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| 186 | |
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| 187 | ! Calculate vertical distribution of newly formed biogenic poc |
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| 188 | ! in the water column with realistic topography (first "dry" layer |
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| 189 | ! contains total fraction, which has passed to the upper layers) |
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| 190 | ! ---------------------------------------------------------------------- |
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| 191 | dminl(:,:) = 0._wp |
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| 192 | dmin3(:,:,:) = zdm0 |
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[13295] | 193 | DO_3D( 1, 1, 1, 1, 1, jpk ) |
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[12377] | 194 | IF( tmask(ji,jj,jk) == 0._wp ) THEN |
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| 195 | dminl(ji,jj) = dminl(ji,jj) + dmin3(ji,jj,jk) |
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| 196 | dmin3(ji,jj,jk) = 0._wp |
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| 197 | ENDIF |
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| 198 | END_3D |
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[3443] | 199 | |
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[13295] | 200 | DO_2D( 1, 1, 1, 1 ) |
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[12377] | 201 | IF( tmask(ji,jj,1) == 0 ) dmin3(ji,jj,1) = 0._wp |
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| 202 | END_2D |
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[3443] | 203 | |
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| 204 | ! Coastal mask |
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| 205 | cmask(:,:) = 0._wp |
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[13295] | 206 | DO_2D( 0, 0, 0, 0 ) |
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[12377] | 207 | IF( tmask(ji,jj,1) /= 0. ) THEN |
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| 208 | 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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| 209 | IF( zmaskt == 0. ) cmask(ji,jj) = 1._wp |
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| 210 | END IF |
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| 211 | END_2D |
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[13226] | 212 | CALL lbc_lnk( 'p2zexp', cmask , 'T', 1.0_wp ) ! lateral boundary conditions on cmask (sign unchanged) |
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[10425] | 213 | areacot = glob_sum( 'p2zexp', e1e2t(:,:) * cmask(:,:) ) |
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[3443] | 214 | ! |
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| 215 | IF( ln_rsttr ) THEN |
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[13286] | 216 | CALL iom_get( numrtr, jpdom_auto, 'SEDB'//ctrcnm(jpdet), sedpocb(:,:) ) |
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| 217 | CALL iom_get( numrtr, jpdom_auto, 'SEDN'//ctrcnm(jpdet), sedpocn(:,:) ) |
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[3443] | 218 | ELSE |
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| 219 | sedpocb(:,:) = 0._wp |
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| 220 | sedpocn(:,:) = 0._wp |
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| 221 | ENDIF |
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| 222 | ! |
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| 223 | END SUBROUTINE p2z_exp_init |
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| 224 | |
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| 225 | INTEGER FUNCTION p2z_exp_alloc() |
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| 226 | !!---------------------------------------------------------------------- |
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| 227 | !! *** ROUTINE p2z_exp_alloc *** |
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| 228 | !!---------------------------------------------------------------------- |
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| 229 | ALLOCATE( cmask(jpi,jpj) , dminl(jpi,jpj) , dmin3(jpi,jpj,jpk), & |
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| 230 | & sedpocb(jpi,jpj) , sedpocn(jpi,jpj), STAT=p2z_exp_alloc ) |
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[10425] | 231 | IF( p2z_exp_alloc /= 0 ) CALL ctl_stop( 'STOP', 'p2z_exp_alloc : failed to allocate arrays.' ) |
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[3443] | 232 | ! |
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| 233 | END FUNCTION p2z_exp_alloc |
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| 234 | |
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| 235 | !!====================================================================== |
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[9788] | 236 | END MODULE p2zexp |
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