[3443] | 1 | MODULE p4zsink |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE p4zsink *** |
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| 4 | !! TOP : PISCES vertical flux of particulate matter due to gravitational sinking |
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| 5 | !!====================================================================== |
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| 6 | !! History : 1.0 ! 2004 (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 (O. Aumont, C. Ethe) Change aggregation formula |
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| 9 | !! 3.5 ! 2012-07 (O. Aumont) Introduce potential time-splitting |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | !! p4z_sink : Compute vertical flux of particulate matter due to gravitational sinking |
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| 12 | !! p4z_sink_init : Unitialisation of sinking speed parameters |
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| 13 | !! p4z_sink_alloc : Allocate sinking speed variables |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | USE oce_trc ! shared variables between ocean and passive tracers |
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| 16 | USE trc ! passive tracers common variables |
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| 17 | USE sms_pisces ! PISCES Source Minus Sink variables |
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[10377] | 18 | USE trcsink ! General routine to compute sedimentation |
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[3443] | 19 | USE prtctl_trc ! print control for debugging |
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| 20 | USE iom ! I/O manager |
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| 21 | USE lib_mpp |
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| 22 | |
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| 23 | IMPLICIT NONE |
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| 24 | PRIVATE |
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| 25 | |
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| 26 | PUBLIC p4z_sink ! called in p4zbio.F90 |
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| 27 | PUBLIC p4z_sink_init ! called in trcsms_pisces.F90 |
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| 28 | PUBLIC p4z_sink_alloc |
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| 29 | |
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| 30 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinking, sinking2 !: POC sinking fluxes |
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| 31 | ! ! (different meanings depending on the parameterization) |
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[7646] | 32 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkingn, sinking2n !: POC sinking fluxes |
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| 33 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkingp, sinking2p !: POC sinking fluxes |
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[3443] | 34 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkcal, sinksil !: CaCO3 and BSi sinking fluxes |
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| 35 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkfer !: Small BFe sinking fluxes |
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| 36 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkfer2 !: Big iron sinking fluxes |
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| 37 | |
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[4996] | 38 | INTEGER :: ik100 |
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[3443] | 39 | |
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| 40 | !!---------------------------------------------------------------------- |
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[10067] | 41 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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[10069] | 42 | !! $Id$ |
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[10068] | 43 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3443] | 44 | !!---------------------------------------------------------------------- |
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| 45 | CONTAINS |
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| 46 | |
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| 47 | !!---------------------------------------------------------------------- |
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| 48 | !! 'standard sinking parameterisation' ??? |
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| 49 | !!---------------------------------------------------------------------- |
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| 50 | |
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[5385] | 51 | SUBROUTINE p4z_sink ( kt, knt ) |
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[3443] | 52 | !!--------------------------------------------------------------------- |
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| 53 | !! *** ROUTINE p4z_sink *** |
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| 54 | !! |
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| 55 | !! ** Purpose : Compute vertical flux of particulate matter due to |
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| 56 | !! gravitational sinking |
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| 57 | !! |
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| 58 | !! ** Method : - ??? |
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| 59 | !!--------------------------------------------------------------------- |
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[5385] | 60 | INTEGER, INTENT(in) :: kt, knt |
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[10377] | 61 | INTEGER :: ji, jj, jk |
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[3443] | 62 | CHARACTER (len=25) :: charout |
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[10377] | 63 | REAL(wp) :: zmax, zfact |
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[9125] | 64 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: zw3d |
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| 65 | REAL(wp), ALLOCATABLE, DIMENSION(:,: ) :: zw2d |
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[3443] | 66 | !!--------------------------------------------------------------------- |
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| 67 | ! |
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[9124] | 68 | IF( ln_timing ) CALL timing_start('p4z_sink') |
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[7646] | 69 | |
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| 70 | ! Initialization of some global variables |
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| 71 | ! --------------------------------------- |
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[7753] | 72 | prodpoc(:,:,:) = 0. |
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| 73 | conspoc(:,:,:) = 0. |
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| 74 | prodgoc(:,:,:) = 0. |
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| 75 | consgoc(:,:,:) = 0. |
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[7646] | 76 | |
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[3443] | 77 | ! |
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| 78 | ! Sinking speeds of detritus is increased with depth as shown |
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| 79 | ! by data and from the coagulation theory |
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| 80 | ! ----------------------------------------------------------- |
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| 81 | DO jk = 1, jpkm1 |
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| 82 | DO jj = 1, jpj |
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| 83 | DO ji = 1,jpi |
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[7646] | 84 | zmax = MAX( heup_01(ji,jj), hmld(ji,jj) ) |
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| 85 | zfact = MAX( 0., gdepw_n(ji,jj,jk+1) - zmax ) / wsbio2scale |
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| 86 | wsbio4(ji,jj,jk) = wsbio2 + MAX(0., ( wsbio2max - wsbio2 )) * zfact |
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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 | ! limit the values of the sinking speeds to avoid numerical instabilities |
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[7753] | 92 | wsbio3(:,:,:) = wsbio |
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[7646] | 93 | |
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[3443] | 94 | ! |
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| 95 | ! Initializa to zero all the sinking arrays |
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| 96 | ! ----------------------------------------- |
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[7753] | 97 | sinking (:,:,:) = 0.e0 |
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| 98 | sinking2(:,:,:) = 0.e0 |
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| 99 | sinkcal (:,:,:) = 0.e0 |
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| 100 | sinkfer (:,:,:) = 0.e0 |
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| 101 | sinksil (:,:,:) = 0.e0 |
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| 102 | sinkfer2(:,:,:) = 0.e0 |
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[3443] | 103 | |
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| 104 | ! Compute the sedimentation term using p4zsink2 for all the sinking particles |
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| 105 | ! ----------------------------------------------------- |
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[10377] | 106 | CALL trc_sink( kt, wsbio3, sinking , jppoc, rfact2 ) |
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| 107 | CALL trc_sink( kt, wsbio3, sinkfer , jpsfe, rfact2 ) |
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| 108 | CALL trc_sink( kt, wsbio4, sinking2, jpgoc, rfact2 ) |
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| 109 | CALL trc_sink( kt, wsbio4, sinkfer2, jpbfe, rfact2 ) |
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| 110 | CALL trc_sink( kt, wsbio4, sinksil , jpgsi, rfact2 ) |
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| 111 | CALL trc_sink( kt, wsbio4, sinkcal , jpcal, rfact2 ) |
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[3443] | 112 | |
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[7646] | 113 | IF( ln_p5z ) THEN |
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[7753] | 114 | sinkingn (:,:,:) = 0.e0 |
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| 115 | sinking2n(:,:,:) = 0.e0 |
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| 116 | sinkingp (:,:,:) = 0.e0 |
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| 117 | sinking2p(:,:,:) = 0.e0 |
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[3443] | 118 | |
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[7646] | 119 | ! Compute the sedimentation term using p4zsink2 for all the sinking particles |
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| 120 | ! ----------------------------------------------------- |
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[10377] | 121 | CALL trc_sink( kt, wsbio3, sinkingn , jppon, rfact2 ) |
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| 122 | CALL trc_sink( kt, wsbio3, sinkingp , jppop, rfact2 ) |
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| 123 | CALL trc_sink( kt, wsbio4, sinking2n, jpgon, rfact2 ) |
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| 124 | CALL trc_sink( kt, wsbio4, sinking2p, jpgop, rfact2 ) |
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[7646] | 125 | ENDIF |
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[3443] | 126 | |
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[4996] | 127 | ! Total carbon export per year |
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[5385] | 128 | IF( iom_use( "tcexp" ) .OR. ( ln_check_mass .AND. kt == nitend .AND. knt == nrdttrc ) ) & |
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[10314] | 129 | & t_oce_co2_exp = glob_sum( 'p4zsink', ( sinking(:,:,ik100) + sinking2(:,:,ik100) ) * e1e2t(:,:) * tmask(:,:,1) ) |
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[3481] | 130 | ! |
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[4996] | 131 | IF( lk_iomput ) THEN |
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[5385] | 132 | IF( knt == nrdttrc ) THEN |
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[9125] | 133 | ALLOCATE( zw2d(jpi,jpj), zw3d(jpi,jpj,jpk) ) |
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[4996] | 134 | zfact = 1.e+3 * rfact2r ! conversion from mol/l/kt to mol/m3/s |
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| 135 | ! |
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| 136 | IF( iom_use( "EPC100" ) ) THEN |
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[7753] | 137 | zw2d(:,:) = ( sinking(:,:,ik100) + sinking2(:,:,ik100) ) * zfact * tmask(:,:,1) ! Export of carbon at 100m |
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| 138 | CALL iom_put( "EPC100" , zw2d ) |
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[4996] | 139 | ENDIF |
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| 140 | IF( iom_use( "EPFE100" ) ) THEN |
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[7753] | 141 | zw2d(:,:) = ( sinkfer(:,:,ik100) + sinkfer2(:,:,ik100) ) * zfact * tmask(:,:,1) ! Export of iron at 100m |
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| 142 | CALL iom_put( "EPFE100" , zw2d ) |
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[4996] | 143 | ENDIF |
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| 144 | IF( iom_use( "EPCAL100" ) ) THEN |
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[7753] | 145 | zw2d(:,:) = sinkcal(:,:,ik100) * zfact * tmask(:,:,1) ! Export of calcite at 100m |
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| 146 | CALL iom_put( "EPCAL100" , zw2d ) |
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[4996] | 147 | ENDIF |
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| 148 | IF( iom_use( "EPSI100" ) ) THEN |
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[7753] | 149 | zw2d(:,:) = sinksil(:,:,ik100) * zfact * tmask(:,:,1) ! Export of bigenic silica at 100m |
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| 150 | CALL iom_put( "EPSI100" , zw2d ) |
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[4996] | 151 | ENDIF |
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| 152 | IF( iom_use( "EXPC" ) ) THEN |
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[7753] | 153 | zw3d(:,:,:) = ( sinking(:,:,:) + sinking2(:,:,:) ) * zfact * tmask(:,:,:) ! Export of carbon in the water column |
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| 154 | CALL iom_put( "EXPC" , zw3d ) |
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[4996] | 155 | ENDIF |
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| 156 | IF( iom_use( "EXPFE" ) ) THEN |
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[7753] | 157 | zw3d(:,:,:) = ( sinkfer(:,:,:) + sinkfer2(:,:,:) ) * zfact * tmask(:,:,:) ! Export of iron |
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| 158 | CALL iom_put( "EXPFE" , zw3d ) |
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[4996] | 159 | ENDIF |
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| 160 | IF( iom_use( "EXPCAL" ) ) THEN |
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[7753] | 161 | zw3d(:,:,:) = sinkcal(:,:,:) * zfact * tmask(:,:,:) ! Export of calcite |
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| 162 | CALL iom_put( "EXPCAL" , zw3d ) |
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[4996] | 163 | ENDIF |
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| 164 | IF( iom_use( "EXPSI" ) ) THEN |
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[7753] | 165 | zw3d(:,:,:) = sinksil(:,:,:) * zfact * tmask(:,:,:) ! Export of bigenic silica |
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| 166 | CALL iom_put( "EXPSI" , zw3d ) |
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[4996] | 167 | ENDIF |
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| 168 | IF( iom_use( "tcexp" ) ) CALL iom_put( "tcexp" , t_oce_co2_exp * zfact ) ! molC/s |
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| 169 | ! |
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[9125] | 170 | DEALLOCATE( zw2d, zw3d ) |
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[4996] | 171 | ENDIF |
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[3443] | 172 | ENDIF |
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| 173 | ! |
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| 174 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 175 | WRITE(charout, FMT="('sink')") |
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| 176 | CALL prt_ctl_trc_info(charout) |
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| 177 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 178 | ENDIF |
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| 179 | ! |
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[9124] | 180 | IF( ln_timing ) CALL timing_stop('p4z_sink') |
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[3443] | 181 | ! |
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| 182 | END SUBROUTINE p4z_sink |
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| 183 | |
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[9124] | 184 | |
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[3443] | 185 | SUBROUTINE p4z_sink_init |
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| 186 | !!---------------------------------------------------------------------- |
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| 187 | !! *** ROUTINE p4z_sink_init *** |
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| 188 | !!---------------------------------------------------------------------- |
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[4996] | 189 | INTEGER :: jk |
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[9124] | 190 | !!---------------------------------------------------------------------- |
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| 191 | ! |
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[4996] | 192 | ik100 = 10 ! last level where depth less than 100 m |
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| 193 | DO jk = jpkm1, 1, -1 |
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| 194 | IF( gdept_1d(jk) > 100. ) ik100 = jk - 1 |
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| 195 | END DO |
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| 196 | IF (lwp) WRITE(numout,*) |
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| 197 | IF (lwp) WRITE(numout,*) ' Level corresponding to 100m depth ', ik100 + 1 |
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| 198 | IF (lwp) WRITE(numout,*) |
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| 199 | ! |
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[3481] | 200 | t_oce_co2_exp = 0._wp |
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| 201 | ! |
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[3443] | 202 | END SUBROUTINE p4z_sink_init |
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| 203 | |
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| 204 | INTEGER FUNCTION p4z_sink_alloc() |
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| 205 | !!---------------------------------------------------------------------- |
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| 206 | !! *** ROUTINE p4z_sink_alloc *** |
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| 207 | !!---------------------------------------------------------------------- |
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[10419] | 208 | INTEGER :: ierr(2) |
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[9124] | 209 | !!---------------------------------------------------------------------- |
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| 210 | ! |
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[7646] | 211 | ierr(:) = 0 |
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| 212 | ! |
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| 213 | ALLOCATE( sinking(jpi,jpj,jpk) , sinking2(jpi,jpj,jpk) , & |
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| 214 | & sinkcal(jpi,jpj,jpk) , sinksil (jpi,jpj,jpk) , & |
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| 215 | & sinkfer2(jpi,jpj,jpk) , & |
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| 216 | & sinkfer(jpi,jpj,jpk) , STAT=ierr(1) ) |
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[3443] | 217 | ! |
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[7646] | 218 | IF( ln_p5z ) ALLOCATE( sinkingn(jpi,jpj,jpk), sinking2n(jpi,jpj,jpk) , & |
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[10419] | 219 | & sinkingp(jpi,jpj,jpk), sinking2p(jpi,jpj,jpk) , STAT=ierr(2) ) |
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[7646] | 220 | ! |
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| 221 | p4z_sink_alloc = MAXVAL( ierr ) |
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[10420] | 222 | IF( p4z_sink_alloc /= 0 ) CALL ctl_stop( 'STOP', 'p4z_sink_alloc : failed to allocate arrays.' ) |
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[3443] | 223 | ! |
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| 224 | END FUNCTION p4z_sink_alloc |
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| 225 | |
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| 226 | !!====================================================================== |
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[5656] | 227 | END MODULE p4zsink |
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