[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 | #if defined key_pisces |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! p4z_sink : Compute vertical flux of particulate matter due to gravitational sinking |
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| 14 | !! p4z_sink_init : Unitialisation of sinking speed parameters |
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| 15 | !! p4z_sink_alloc : Allocate sinking speed variables |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | USE oce_trc ! shared variables between ocean and passive tracers |
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| 18 | USE trc ! passive tracers common variables |
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| 19 | USE sms_pisces ! PISCES Source Minus Sink variables |
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| 20 | USE prtctl_trc ! print control for debugging |
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| 21 | USE iom ! I/O manager |
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| 22 | USE lib_mpp |
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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 p4z_sink ! called in p4zbio.F90 |
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| 28 | PUBLIC p4z_sink_init ! called in trcsms_pisces.F90 |
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| 29 | PUBLIC p4z_sink_alloc |
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| 30 | |
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| 31 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: wsbio3 !: POC sinking speed |
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| 32 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: wsbio4 !: GOC sinking speed |
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| 33 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: wscal !: Calcite and BSi sinking speeds |
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| 34 | |
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| 35 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinking, sinking2 !: POC sinking fluxes |
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| 36 | ! ! (different meanings depending on the parameterization) |
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| 37 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkcal, sinksil !: CaCO3 and BSi sinking fluxes |
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| 38 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkfer !: Small BFe sinking fluxes |
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| 39 | #if ! defined key_kriest |
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| 40 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkfer2 !: Big iron sinking fluxes |
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| 41 | #endif |
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| 42 | |
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[4996] | 43 | INTEGER :: ik100 |
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[3443] | 44 | |
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| 45 | #if defined key_kriest |
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[4147] | 46 | REAL(wp) :: xkr_sfact !: Sinking factor |
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| 47 | REAL(wp) :: xkr_stick !: Stickiness |
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| 48 | REAL(wp) :: xkr_nnano !: Nbr of cell in nano size class |
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| 49 | REAL(wp) :: xkr_ndiat !: Nbr of cell in diatoms size class |
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| 50 | REAL(wp) :: xkr_nmicro !: Nbr of cell in microzoo size class |
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| 51 | REAL(wp) :: xkr_nmeso !: Nbr of cell in mesozoo size class |
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| 52 | REAL(wp) :: xkr_naggr !: Nbr of cell in aggregates size class |
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[3443] | 53 | |
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| 54 | REAL(wp) :: xkr_frac |
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| 55 | |
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| 56 | REAL(wp), PUBLIC :: xkr_dnano !: Size of particles in nano pool |
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| 57 | REAL(wp), PUBLIC :: xkr_ddiat !: Size of particles in diatoms pool |
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| 58 | REAL(wp), PUBLIC :: xkr_dmicro !: Size of particles in microzoo pool |
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| 59 | REAL(wp), PUBLIC :: xkr_dmeso !: Size of particles in mesozoo pool |
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| 60 | REAL(wp), PUBLIC :: xkr_daggr !: Size of particles in aggregates pool |
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| 61 | REAL(wp), PUBLIC :: xkr_wsbio_min !: min vertical particle speed |
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| 62 | REAL(wp), PUBLIC :: xkr_wsbio_max !: max vertical particle speed |
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| 63 | |
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| 64 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: xnumm !: maximum number of particles in aggregates |
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| 65 | #endif |
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| 66 | |
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| 67 | !!* Substitution |
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| 68 | # include "top_substitute.h90" |
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| 69 | !!---------------------------------------------------------------------- |
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| 70 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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[5256] | 71 | !! $Id$ |
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[3443] | 72 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 73 | !!---------------------------------------------------------------------- |
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| 74 | CONTAINS |
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| 75 | |
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| 76 | #if ! defined key_kriest |
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| 77 | !!---------------------------------------------------------------------- |
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| 78 | !! 'standard sinking parameterisation' ??? |
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| 79 | !!---------------------------------------------------------------------- |
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| 80 | |
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| 81 | SUBROUTINE p4z_sink ( kt, jnt ) |
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| 82 | !!--------------------------------------------------------------------- |
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| 83 | !! *** ROUTINE p4z_sink *** |
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| 84 | !! |
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| 85 | !! ** Purpose : Compute vertical flux of particulate matter due to |
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| 86 | !! gravitational sinking |
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| 87 | !! |
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| 88 | !! ** Method : - ??? |
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| 89 | !!--------------------------------------------------------------------- |
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| 90 | INTEGER, INTENT(in) :: kt, jnt |
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| 91 | INTEGER :: ji, jj, jk, jit |
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| 92 | INTEGER :: iiter1, iiter2 |
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| 93 | REAL(wp) :: zagg1, zagg2, zagg3, zagg4 |
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| 94 | REAL(wp) :: zagg , zaggfe, zaggdoc, zaggdoc2, zaggdoc3 |
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| 95 | REAL(wp) :: zfact, zwsmax, zmax, zstep |
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| 96 | CHARACTER (len=25) :: charout |
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[4996] | 97 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zw3d |
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| 98 | REAL(wp), POINTER, DIMENSION(:,: ) :: zw2d |
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[3443] | 99 | !!--------------------------------------------------------------------- |
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| 100 | ! |
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| 101 | IF( nn_timing == 1 ) CALL timing_start('p4z_sink') |
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| 102 | ! |
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| 103 | ! Sinking speeds of detritus is increased with depth as shown |
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| 104 | ! by data and from the coagulation theory |
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| 105 | ! ----------------------------------------------------------- |
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| 106 | DO jk = 1, jpkm1 |
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| 107 | DO jj = 1, jpj |
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| 108 | DO ji = 1,jpi |
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| 109 | zmax = MAX( heup(ji,jj), hmld(ji,jj) ) |
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| 110 | zfact = MAX( 0., fsdepw(ji,jj,jk+1) - zmax ) / 5000._wp |
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| 111 | wsbio4(ji,jj,jk) = wsbio2 + ( 200.- wsbio2 ) * zfact |
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| 112 | END DO |
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| 113 | END DO |
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| 114 | END DO |
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| 115 | |
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| 116 | ! limit the values of the sinking speeds to avoid numerical instabilities |
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| 117 | wsbio3(:,:,:) = wsbio |
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| 118 | wscal (:,:,:) = wsbio4(:,:,:) |
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| 119 | ! |
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| 120 | ! OA This is (I hope) a temporary solution for the problem that may |
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| 121 | ! OA arise in specific situation where the CFL criterion is broken |
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| 122 | ! OA for vertical sedimentation of particles. To avoid this, a time |
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| 123 | ! OA splitting algorithm has been coded. A specific maximum |
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| 124 | ! OA iteration number is provided and may be specified in the namelist |
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| 125 | ! OA This is to avoid very large iteration number when explicit free |
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| 126 | ! OA surface is used (for instance). When niter?max is set to 1, |
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| 127 | ! OA this computation is skipped. The crude old threshold method is |
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| 128 | ! OA then applied. This also happens when niter exceeds nitermax. |
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| 129 | IF( MAX( niter1max, niter2max ) == 1 ) THEN |
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| 130 | iiter1 = 1 |
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| 131 | iiter2 = 1 |
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| 132 | ELSE |
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| 133 | iiter1 = 1 |
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| 134 | iiter2 = 1 |
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| 135 | DO jk = 1, jpkm1 |
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| 136 | DO jj = 1, jpj |
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| 137 | DO ji = 1, jpi |
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| 138 | IF( tmask(ji,jj,jk) == 1) THEN |
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[3829] | 139 | zwsmax = 0.5 * fse3t(ji,jj,jk) / xstep |
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[3443] | 140 | iiter1 = MAX( iiter1, INT( wsbio3(ji,jj,jk) / zwsmax ) ) |
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| 141 | iiter2 = MAX( iiter2, INT( wsbio4(ji,jj,jk) / zwsmax ) ) |
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| 142 | ENDIF |
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| 143 | END DO |
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| 144 | END DO |
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| 145 | END DO |
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| 146 | IF( lk_mpp ) THEN |
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| 147 | CALL mpp_max( iiter1 ) |
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| 148 | CALL mpp_max( iiter2 ) |
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| 149 | ENDIF |
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| 150 | iiter1 = MIN( iiter1, niter1max ) |
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| 151 | iiter2 = MIN( iiter2, niter2max ) |
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| 152 | ENDIF |
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| 153 | |
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| 154 | DO jk = 1,jpkm1 |
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| 155 | DO jj = 1, jpj |
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| 156 | DO ji = 1, jpi |
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| 157 | IF( tmask(ji,jj,jk) == 1 ) THEN |
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[4148] | 158 | zwsmax = 0.5 * fse3t(ji,jj,jk) / xstep |
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[3443] | 159 | wsbio3(ji,jj,jk) = MIN( wsbio3(ji,jj,jk), zwsmax * FLOAT( iiter1 ) ) |
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| 160 | wsbio4(ji,jj,jk) = MIN( wsbio4(ji,jj,jk), zwsmax * FLOAT( iiter2 ) ) |
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| 161 | ENDIF |
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| 162 | END DO |
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| 163 | END DO |
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| 164 | END DO |
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| 165 | |
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| 166 | ! Initializa to zero all the sinking arrays |
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| 167 | ! ----------------------------------------- |
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| 168 | sinking (:,:,:) = 0.e0 |
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| 169 | sinking2(:,:,:) = 0.e0 |
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| 170 | sinkcal (:,:,:) = 0.e0 |
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| 171 | sinkfer (:,:,:) = 0.e0 |
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| 172 | sinksil (:,:,:) = 0.e0 |
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| 173 | sinkfer2(:,:,:) = 0.e0 |
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| 174 | |
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| 175 | ! Compute the sedimentation term using p4zsink2 for all the sinking particles |
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| 176 | ! ----------------------------------------------------- |
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| 177 | DO jit = 1, iiter1 |
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| 178 | CALL p4z_sink2( wsbio3, sinking , jppoc, iiter1 ) |
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| 179 | CALL p4z_sink2( wsbio3, sinkfer , jpsfe, iiter1 ) |
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| 180 | END DO |
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| 181 | |
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| 182 | DO jit = 1, iiter2 |
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| 183 | CALL p4z_sink2( wsbio4, sinking2, jpgoc, iiter2 ) |
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| 184 | CALL p4z_sink2( wsbio4, sinkfer2, jpbfe, iiter2 ) |
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| 185 | CALL p4z_sink2( wsbio4, sinksil , jpgsi, iiter2 ) |
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| 186 | CALL p4z_sink2( wscal , sinkcal , jpcal, iiter2 ) |
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| 187 | END DO |
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| 188 | |
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| 189 | ! Exchange between organic matter compartments due to coagulation/disaggregation |
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| 190 | ! --------------------------------------------------- |
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| 191 | DO jk = 1, jpkm1 |
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| 192 | DO jj = 1, jpj |
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| 193 | DO ji = 1, jpi |
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| 194 | ! |
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| 195 | zstep = xstep |
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| 196 | # if defined key_degrad |
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| 197 | zstep = zstep * facvol(ji,jj,jk) |
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| 198 | # endif |
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| 199 | zfact = zstep * xdiss(ji,jj,jk) |
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| 200 | ! Part I : Coagulation dependent on turbulence |
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| 201 | zagg1 = 25.9 * zfact * trn(ji,jj,jk,jppoc) * trn(ji,jj,jk,jppoc) |
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[3446] | 202 | zagg2 = 4452. * zfact * trn(ji,jj,jk,jppoc) * trn(ji,jj,jk,jpgoc) |
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[3443] | 203 | |
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| 204 | ! Part II : Differential settling |
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| 205 | |
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| 206 | ! Aggregation of small into large particles |
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[3446] | 207 | zagg3 = 47.1 * zstep * trn(ji,jj,jk,jppoc) * trn(ji,jj,jk,jpgoc) |
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| 208 | zagg4 = 3.3 * zstep * trn(ji,jj,jk,jppoc) * trn(ji,jj,jk,jppoc) |
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[3443] | 209 | |
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| 210 | zagg = zagg1 + zagg2 + zagg3 + zagg4 |
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| 211 | zaggfe = zagg * trn(ji,jj,jk,jpsfe) / ( trn(ji,jj,jk,jppoc) + rtrn ) |
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| 212 | |
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| 213 | ! Aggregation of DOC to POC : |
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| 214 | ! 1st term is shear aggregation of DOC-DOC |
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| 215 | ! 2nd term is shear aggregation of DOC-POC |
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| 216 | ! 3rd term is differential settling of DOC-POC |
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[3446] | 217 | zaggdoc = ( ( 0.369 * 0.3 * trn(ji,jj,jk,jpdoc) + 102.4 * trn(ji,jj,jk,jppoc) ) * zfact & |
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| 218 | & + 2.4 * zstep * trn(ji,jj,jk,jppoc) ) * 0.3 * trn(ji,jj,jk,jpdoc) |
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[3443] | 219 | ! transfer of DOC to GOC : |
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| 220 | ! 1st term is shear aggregation |
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| 221 | ! 2nd term is differential settling |
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[3446] | 222 | zaggdoc2 = ( 3.53E3 * zfact + 0.1 * zstep ) * trn(ji,jj,jk,jpgoc) * 0.3 * trn(ji,jj,jk,jpdoc) |
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[3443] | 223 | ! tranfer of DOC to POC due to brownian motion |
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[3446] | 224 | zaggdoc3 = ( 5095. * trn(ji,jj,jk,jppoc) + 114. * 0.3 * trn(ji,jj,jk,jpdoc) ) *zstep * 0.3 * trn(ji,jj,jk,jpdoc) |
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[3443] | 225 | |
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| 226 | ! Update the trends |
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| 227 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) - zagg + zaggdoc + zaggdoc3 |
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| 228 | tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zagg + zaggdoc2 |
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| 229 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) - zaggfe |
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| 230 | tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + zaggfe |
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| 231 | tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) - zaggdoc - zaggdoc2 - zaggdoc3 |
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| 232 | ! |
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| 233 | END DO |
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| 234 | END DO |
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| 235 | END DO |
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| 236 | |
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[4996] | 237 | |
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| 238 | ! Total carbon export per year |
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| 239 | IF( iom_use( "tcexp" ) .OR. ( ln_check_mass .AND. kt == nitend .AND. jnt == nrdttrc ) ) & |
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| 240 | & t_oce_co2_exp = glob_sum( ( sinking(:,:,ik100) + sinking2(:,:,ik100) ) * e1e2t(:,:) * tmask(:,:,1) ) |
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[3481] | 241 | ! |
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[4996] | 242 | IF( lk_iomput ) THEN |
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| 243 | IF( jnt == nrdttrc ) THEN |
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| 244 | CALL wrk_alloc( jpi, jpj, zw2d ) |
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| 245 | CALL wrk_alloc( jpi, jpj, jpk, zw3d ) |
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| 246 | zfact = 1.e+3 * rfact2r ! conversion from mol/l/kt to mol/m3/s |
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| 247 | ! |
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| 248 | IF( iom_use( "EPC100" ) ) THEN |
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| 249 | zw2d(:,:) = ( sinking(:,:,ik100) + sinking2(:,:,ik100) ) * zfact * tmask(:,:,1) ! Export of carbon at 100m |
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| 250 | CALL iom_put( "EPC100" , zw2d ) |
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| 251 | ENDIF |
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| 252 | IF( iom_use( "EPFE100" ) ) THEN |
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| 253 | zw2d(:,:) = ( sinkfer(:,:,ik100) + sinkfer2(:,:,ik100) ) * zfact * tmask(:,:,1) ! Export of iron at 100m |
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| 254 | CALL iom_put( "EPFE100" , zw2d ) |
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| 255 | ENDIF |
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| 256 | IF( iom_use( "EPCAL100" ) ) THEN |
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| 257 | zw2d(:,:) = sinkcal(:,:,ik100) * zfact * tmask(:,:,1) ! Export of calcite at 100m |
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| 258 | CALL iom_put( "EPCAL100" , zw2d ) |
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| 259 | ENDIF |
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| 260 | IF( iom_use( "EPSI100" ) ) THEN |
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| 261 | zw2d(:,:) = sinksil(:,:,ik100) * zfact * tmask(:,:,1) ! Export of bigenic silica at 100m |
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| 262 | CALL iom_put( "EPSI100" , zw2d ) |
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| 263 | ENDIF |
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| 264 | IF( iom_use( "EXPC" ) ) THEN |
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| 265 | zw3d(:,:,:) = ( sinking(:,:,:) + sinking2(:,:,:) ) * zfact * tmask(:,:,:) ! Export of carbon in the water column |
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| 266 | CALL iom_put( "EXPC" , zw3d ) |
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| 267 | ENDIF |
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| 268 | IF( iom_use( "EXPFE" ) ) THEN |
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| 269 | zw3d(:,:,:) = ( sinkfer(:,:,:) + sinkfer2(:,:,:) ) * zfact * tmask(:,:,:) ! Export of iron |
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| 270 | CALL iom_put( "EXPFE" , zw3d ) |
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| 271 | ENDIF |
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| 272 | IF( iom_use( "EXPCAL" ) ) THEN |
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| 273 | zw3d(:,:,:) = sinkcal(:,:,:) * zfact * tmask(:,:,:) ! Export of calcite |
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| 274 | CALL iom_put( "EXPCAL" , zw3d ) |
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| 275 | ENDIF |
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| 276 | IF( iom_use( "EXPSI" ) ) THEN |
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| 277 | zw3d(:,:,:) = sinksil(:,:,:) * zfact * tmask(:,:,:) ! Export of bigenic silica |
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| 278 | CALL iom_put( "EXPSI" , zw3d ) |
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| 279 | ENDIF |
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| 280 | IF( iom_use( "tcexp" ) ) CALL iom_put( "tcexp" , t_oce_co2_exp * zfact ) ! molC/s |
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| 281 | ! |
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| 282 | CALL wrk_dealloc( jpi, jpj, zw2d ) |
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| 283 | CALL wrk_dealloc( jpi, jpj, jpk, zw3d ) |
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| 284 | ENDIF |
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| 285 | ELSE |
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| 286 | IF( ln_diatrc ) THEN |
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| 287 | zfact = 1.e3 * rfact2r |
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| 288 | trc2d(:,:,jp_pcs0_2d + 4) = sinking (:,:,ik100) * zfact * tmask(:,:,1) |
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| 289 | trc2d(:,:,jp_pcs0_2d + 5) = sinking2(:,:,ik100) * zfact * tmask(:,:,1) |
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| 290 | trc2d(:,:,jp_pcs0_2d + 6) = sinkfer (:,:,ik100) * zfact * tmask(:,:,1) |
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| 291 | trc2d(:,:,jp_pcs0_2d + 7) = sinkfer2(:,:,ik100) * zfact * tmask(:,:,1) |
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| 292 | trc2d(:,:,jp_pcs0_2d + 8) = sinksil (:,:,ik100) * zfact * tmask(:,:,1) |
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| 293 | trc2d(:,:,jp_pcs0_2d + 9) = sinkcal (:,:,ik100) * zfact * tmask(:,:,1) |
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[3443] | 294 | ENDIF |
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| 295 | ENDIF |
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| 296 | ! |
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| 297 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 298 | WRITE(charout, FMT="('sink')") |
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| 299 | CALL prt_ctl_trc_info(charout) |
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| 300 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 301 | ENDIF |
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| 302 | ! |
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| 303 | IF( nn_timing == 1 ) CALL timing_stop('p4z_sink') |
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| 304 | ! |
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| 305 | END SUBROUTINE p4z_sink |
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| 306 | |
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| 307 | SUBROUTINE p4z_sink_init |
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| 308 | !!---------------------------------------------------------------------- |
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| 309 | !! *** ROUTINE p4z_sink_init *** |
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| 310 | !!---------------------------------------------------------------------- |
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[4996] | 311 | INTEGER :: jk |
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[3481] | 312 | |
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[4996] | 313 | ik100 = 10 ! last level where depth less than 100 m |
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| 314 | DO jk = jpkm1, 1, -1 |
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| 315 | IF( gdept_1d(jk) > 100. ) ik100 = jk - 1 |
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| 316 | END DO |
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| 317 | IF (lwp) WRITE(numout,*) |
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| 318 | IF (lwp) WRITE(numout,*) ' Level corresponding to 100m depth ', ik100 + 1 |
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| 319 | IF (lwp) WRITE(numout,*) |
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| 320 | ! |
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[3481] | 321 | t_oce_co2_exp = 0._wp |
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| 322 | ! |
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[3443] | 323 | END SUBROUTINE p4z_sink_init |
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| 324 | |
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| 325 | #else |
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| 326 | !!---------------------------------------------------------------------- |
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| 327 | !! 'Kriest sinking parameterisation' key_kriest ??? |
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| 328 | !!---------------------------------------------------------------------- |
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| 329 | |
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| 330 | SUBROUTINE p4z_sink ( kt, jnt ) |
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| 331 | !!--------------------------------------------------------------------- |
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| 332 | !! *** ROUTINE p4z_sink *** |
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| 333 | !! |
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| 334 | !! ** Purpose : Compute vertical flux of particulate matter due to |
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| 335 | !! gravitational sinking - Kriest parameterization |
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| 336 | !! |
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| 337 | !! ** Method : - ??? |
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| 338 | !!--------------------------------------------------------------------- |
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| 339 | ! |
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| 340 | INTEGER, INTENT(in) :: kt, jnt |
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| 341 | ! |
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| 342 | INTEGER :: ji, jj, jk, jit, niter1, niter2 |
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| 343 | REAL(wp) :: zagg1, zagg2, zagg3, zagg4, zagg5, zfract, zaggsi, zaggsh |
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| 344 | REAL(wp) :: zagg , zaggdoc, zaggdoc1, znumdoc |
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| 345 | REAL(wp) :: znum , zeps, zfm, zgm, zsm |
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| 346 | REAL(wp) :: zdiv , zdiv1, zdiv2, zdiv3, zdiv4, zdiv5 |
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| 347 | REAL(wp) :: zval1, zval2, zval3, zval4 |
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[4996] | 348 | REAL(wp) :: zfact |
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[3443] | 349 | INTEGER :: ik1 |
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| 350 | CHARACTER (len=25) :: charout |
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| 351 | REAL(wp), POINTER, DIMENSION(:,:,:) :: znum3d |
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[4996] | 352 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zw3d |
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| 353 | REAL(wp), POINTER, DIMENSION(:,: ) :: zw2d |
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[3443] | 354 | !!--------------------------------------------------------------------- |
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| 355 | ! |
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| 356 | IF( nn_timing == 1 ) CALL timing_start('p4z_sink') |
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| 357 | ! |
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| 358 | CALL wrk_alloc( jpi, jpj, jpk, znum3d ) |
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| 359 | ! |
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| 360 | ! Initialisation of variables used to compute Sinking Speed |
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| 361 | ! --------------------------------------------------------- |
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| 362 | |
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| 363 | znum3d(:,:,:) = 0.e0 |
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| 364 | zval1 = 1. + xkr_zeta |
---|
| 365 | zval2 = 1. + xkr_zeta + xkr_eta |
---|
| 366 | zval3 = 1. + xkr_eta |
---|
| 367 | |
---|
| 368 | ! Computation of the vertical sinking speed : Kriest et Evans, 2000 |
---|
| 369 | ! ----------------------------------------------------------------- |
---|
| 370 | |
---|
| 371 | DO jk = 1, jpkm1 |
---|
| 372 | DO jj = 1, jpj |
---|
| 373 | DO ji = 1, jpi |
---|
| 374 | IF( tmask(ji,jj,jk) /= 0.e0 ) THEN |
---|
| 375 | znum = trn(ji,jj,jk,jppoc) / ( trn(ji,jj,jk,jpnum) + rtrn ) / xkr_massp |
---|
| 376 | ! -------------- To avoid sinking speed over 50 m/day ------- |
---|
| 377 | znum = MIN( xnumm(jk), znum ) |
---|
| 378 | znum = MAX( 1.1 , znum ) |
---|
| 379 | znum3d(ji,jj,jk) = znum |
---|
| 380 | !------------------------------------------------------------ |
---|
| 381 | zeps = ( zval1 * znum - 1. )/ ( znum - 1. ) |
---|
| 382 | zfm = xkr_frac**( 1. - zeps ) |
---|
| 383 | zgm = xkr_frac**( zval1 - zeps ) |
---|
| 384 | zdiv = MAX( 1.e-4, ABS( zeps - zval2 ) ) * SIGN( 1., ( zeps - zval2 ) ) |
---|
| 385 | zdiv1 = zeps - zval3 |
---|
| 386 | wsbio3(ji,jj,jk) = xkr_wsbio_min * ( zeps - zval1 ) / zdiv & |
---|
| 387 | & - xkr_wsbio_max * zgm * xkr_eta / zdiv |
---|
| 388 | wsbio4(ji,jj,jk) = xkr_wsbio_min * ( zeps-1. ) / zdiv1 & |
---|
| 389 | & - xkr_wsbio_max * zfm * xkr_eta / zdiv1 |
---|
| 390 | IF( znum == 1.1) wsbio3(ji,jj,jk) = wsbio4(ji,jj,jk) |
---|
| 391 | ENDIF |
---|
| 392 | END DO |
---|
| 393 | END DO |
---|
| 394 | END DO |
---|
| 395 | |
---|
| 396 | wscal(:,:,:) = MAX( wsbio3(:,:,:), 30._wp ) |
---|
| 397 | |
---|
| 398 | ! INITIALIZE TO ZERO ALL THE SINKING ARRAYS |
---|
| 399 | ! ----------------------------------------- |
---|
| 400 | |
---|
| 401 | sinking (:,:,:) = 0.e0 |
---|
| 402 | sinking2(:,:,:) = 0.e0 |
---|
| 403 | sinkcal (:,:,:) = 0.e0 |
---|
| 404 | sinkfer (:,:,:) = 0.e0 |
---|
| 405 | sinksil (:,:,:) = 0.e0 |
---|
| 406 | |
---|
| 407 | ! Compute the sedimentation term using p4zsink2 for all the sinking particles |
---|
| 408 | ! ----------------------------------------------------- |
---|
| 409 | |
---|
| 410 | niter1 = niter1max |
---|
| 411 | niter2 = niter2max |
---|
| 412 | |
---|
| 413 | DO jit = 1, niter1 |
---|
| 414 | CALL p4z_sink2( wsbio3, sinking , jppoc, niter1 ) |
---|
| 415 | CALL p4z_sink2( wsbio3, sinkfer , jpsfe, niter1 ) |
---|
| 416 | CALL p4z_sink2( wscal , sinksil , jpgsi, niter1 ) |
---|
| 417 | CALL p4z_sink2( wscal , sinkcal , jpcal, niter1 ) |
---|
| 418 | END DO |
---|
| 419 | |
---|
| 420 | DO jit = 1, niter2 |
---|
| 421 | CALL p4z_sink2( wsbio4, sinking2, jpnum, niter2 ) |
---|
| 422 | END DO |
---|
| 423 | |
---|
| 424 | ! Exchange between organic matter compartments due to coagulation/disaggregation |
---|
| 425 | ! --------------------------------------------------- |
---|
| 426 | |
---|
| 427 | zval1 = 1. + xkr_zeta |
---|
| 428 | zval2 = 1. + xkr_eta |
---|
| 429 | zval3 = 3. + xkr_eta |
---|
| 430 | zval4 = 4. + xkr_eta |
---|
| 431 | |
---|
| 432 | DO jk = 1,jpkm1 |
---|
| 433 | DO jj = 1,jpj |
---|
| 434 | DO ji = 1,jpi |
---|
| 435 | IF( tmask(ji,jj,jk) /= 0.e0 ) THEN |
---|
| 436 | |
---|
| 437 | znum = trn(ji,jj,jk,jppoc)/(trn(ji,jj,jk,jpnum)+rtrn) / xkr_massp |
---|
| 438 | !-------------- To avoid sinking speed over 50 m/day ------- |
---|
| 439 | znum = min(xnumm(jk),znum) |
---|
| 440 | znum = MAX( 1.1,znum) |
---|
| 441 | !------------------------------------------------------------ |
---|
| 442 | zeps = ( zval1 * znum - 1.) / ( znum - 1.) |
---|
| 443 | zdiv = MAX( 1.e-4, ABS( zeps - zval3) ) * SIGN( 1., zeps - zval3 ) |
---|
| 444 | zdiv1 = MAX( 1.e-4, ABS( zeps - 4. ) ) * SIGN( 1., zeps - 4. ) |
---|
| 445 | zdiv2 = zeps - 2. |
---|
| 446 | zdiv3 = zeps - 3. |
---|
| 447 | zdiv4 = zeps - zval2 |
---|
| 448 | zdiv5 = 2.* zeps - zval4 |
---|
| 449 | zfm = xkr_frac**( 1.- zeps ) |
---|
| 450 | zsm = xkr_frac**xkr_eta |
---|
| 451 | |
---|
| 452 | ! Part I : Coagulation dependant on turbulence |
---|
| 453 | ! ---------------------------------------------- |
---|
| 454 | |
---|
[3471] | 455 | zagg1 = 0.163 * trn(ji,jj,jk,jpnum)**2 & |
---|
[3443] | 456 | & * 2.*( (zfm-1.)*(zfm*xkr_mass_max**3-xkr_mass_min**3) & |
---|
| 457 | & * (zeps-1)/zdiv1 + 3.*(zfm*xkr_mass_max-xkr_mass_min) & |
---|
| 458 | & * (zfm*xkr_mass_max**2-xkr_mass_min**2) & |
---|
| 459 | & * (zeps-1.)**2/(zdiv2*zdiv3)) |
---|
| 460 | zagg2 = 2*0.163*trn(ji,jj,jk,jpnum)**2*zfm* & |
---|
| 461 | & ((xkr_mass_max**3+3.*(xkr_mass_max**2 & |
---|
| 462 | & *xkr_mass_min*(zeps-1.)/zdiv2 & |
---|
| 463 | & +xkr_mass_max*xkr_mass_min**2*(zeps-1.)/zdiv3) & |
---|
| 464 | & +xkr_mass_min**3*(zeps-1)/zdiv1) & |
---|
| 465 | & -zfm*xkr_mass_max**3*(1.+3.*((zeps-1.)/ & |
---|
| 466 | & (zeps-2.)+(zeps-1.)/zdiv3)+(zeps-1.)/zdiv1)) |
---|
| 467 | |
---|
| 468 | zagg3 = 0.163*trn(ji,jj,jk,jpnum)**2*zfm**2*8. * xkr_mass_max**3 |
---|
| 469 | |
---|
| 470 | ! Aggregation of small into large particles |
---|
| 471 | ! Part II : Differential settling |
---|
| 472 | ! ---------------------------------------------- |
---|
| 473 | |
---|
| 474 | zagg4 = 2.*3.141*0.125*trn(ji,jj,jk,jpnum)**2* & |
---|
| 475 | & xkr_wsbio_min*(zeps-1.)**2 & |
---|
| 476 | & *(xkr_mass_min**2*((1.-zsm*zfm)/(zdiv3*zdiv4) & |
---|
| 477 | & -(1.-zfm)/(zdiv*(zeps-1.)))- & |
---|
| 478 | & ((zfm*zfm*xkr_mass_max**2*zsm-xkr_mass_min**2) & |
---|
| 479 | & *xkr_eta)/(zdiv*zdiv3*zdiv5) ) |
---|
| 480 | |
---|
| 481 | zagg5 = 2.*3.141*0.125*trn(ji,jj,jk,jpnum)**2 & |
---|
| 482 | & *(zeps-1.)*zfm*xkr_wsbio_min & |
---|
| 483 | & *(zsm*(xkr_mass_min**2-zfm*xkr_mass_max**2) & |
---|
| 484 | & /zdiv3-(xkr_mass_min**2-zfm*zsm*xkr_mass_max**2) & |
---|
| 485 | & /zdiv) |
---|
| 486 | |
---|
| 487 | ! |
---|
| 488 | ! Fractionnation by swimming organisms |
---|
| 489 | ! ------------------------------------ |
---|
| 490 | |
---|
| 491 | zfract = 2.*3.141*0.125*trn(ji,jj,jk,jpmes)*12./0.12/0.06**3*trn(ji,jj,jk,jpnum) & |
---|
| 492 | & * (0.01/xkr_mass_min)**(1.-zeps)*0.1**2 & |
---|
| 493 | & * 10000.*xstep |
---|
| 494 | |
---|
| 495 | ! Aggregation of DOC to small particles |
---|
| 496 | ! -------------------------------------- |
---|
| 497 | |
---|
| 498 | zaggdoc = 0.83 * trn(ji,jj,jk,jpdoc) * xstep * xdiss(ji,jj,jk) * trn(ji,jj,jk,jpdoc) & |
---|
| 499 | & + 0.005 * 231. * trn(ji,jj,jk,jpdoc) * xstep * trn(ji,jj,jk,jpdoc) |
---|
| 500 | zaggdoc1 = 271. * trn(ji,jj,jk,jppoc) * xstep * xdiss(ji,jj,jk) * trn(ji,jj,jk,jpdoc) & |
---|
| 501 | & + 0.02 * 16706. * trn(ji,jj,jk,jppoc) * xstep * trn(ji,jj,jk,jpdoc) |
---|
| 502 | |
---|
| 503 | # if defined key_degrad |
---|
| 504 | zagg1 = zagg1 * facvol(ji,jj,jk) |
---|
| 505 | zagg2 = zagg2 * facvol(ji,jj,jk) |
---|
| 506 | zagg3 = zagg3 * facvol(ji,jj,jk) |
---|
| 507 | zagg4 = zagg4 * facvol(ji,jj,jk) |
---|
| 508 | zagg5 = zagg5 * facvol(ji,jj,jk) |
---|
| 509 | zaggdoc = zaggdoc * facvol(ji,jj,jk) |
---|
| 510 | zaggdoc1 = zaggdoc1 * facvol(ji,jj,jk) |
---|
| 511 | # endif |
---|
| 512 | zaggsh = ( zagg1 + zagg2 + zagg3 ) * rfact2 * xdiss(ji,jj,jk) / 1000. |
---|
| 513 | zaggsi = ( zagg4 + zagg5 ) * xstep / 10. |
---|
| 514 | zagg = 0.5 * xkr_stick * ( zaggsh + zaggsi ) |
---|
| 515 | ! |
---|
| 516 | znumdoc = trn(ji,jj,jk,jpnum) / ( trn(ji,jj,jk,jppoc) + rtrn ) |
---|
| 517 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zaggdoc + zaggdoc1 |
---|
| 518 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) + zfract + zaggdoc / xkr_massp - zagg |
---|
| 519 | tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) - zaggdoc - zaggdoc1 |
---|
| 520 | |
---|
| 521 | ENDIF |
---|
| 522 | END DO |
---|
| 523 | END DO |
---|
| 524 | END DO |
---|
| 525 | |
---|
[3481] | 526 | ! Total primary production per year |
---|
[4996] | 527 | t_oce_co2_exp = t_oce_co2_exp + glob_sum( ( sinking(:,:,ik100) * e1e2t(:,:) * tmask(:,:,1) ) |
---|
[3481] | 528 | ! |
---|
[4996] | 529 | IF( lk_iomput ) THEN |
---|
| 530 | IF( jnt == nrdttrc ) THEN |
---|
| 531 | CALL wrk_alloc( jpi, jpj, zw2d ) |
---|
| 532 | CALL wrk_alloc( jpi, jpj, jpk, zw3d ) |
---|
| 533 | zfact = 1.e+3 * rfact2r ! conversion from mol/l/kt to mol/m3/s |
---|
| 534 | ! |
---|
| 535 | IF( iom_use( "EPC100" ) ) THEN |
---|
| 536 | zw2d(:,:) = sinking(:,:,ik100) * zfact * tmask(:,:,1) ! Export of carbon at 100m |
---|
| 537 | CALL iom_put( "EPC100" , zw2d ) |
---|
| 538 | ENDIF |
---|
| 539 | IF( iom_use( "EPN100" ) ) THEN |
---|
| 540 | zw2d(:,:) = sinking2(:,:,ik100) * zfact * tmask(:,:,1) ! Export of number of aggregates ? |
---|
| 541 | CALL iom_put( "EPN100" , zw2d ) |
---|
| 542 | ENDIF |
---|
| 543 | IF( iom_use( "EPCAL100" ) ) THEN |
---|
| 544 | zw2d(:,:) = sinkcal(:,:,ik100) * zfact * tmask(:,:,1) ! Export of calcite at 100m |
---|
| 545 | CALL iom_put( "EPCAL100" , zw2d ) |
---|
| 546 | ENDIF |
---|
| 547 | IF( iom_use( "EPSI100" ) ) THEN |
---|
| 548 | zw2d(:,:) = sinksil(:,:,ik100) * zfact * tmask(:,:,1) ! Export of bigenic silica at 100m |
---|
| 549 | CALL iom_put( "EPSI100" , zw2d ) |
---|
| 550 | ENDIF |
---|
| 551 | IF( iom_use( "EXPC" ) ) THEN |
---|
| 552 | zw3d(:,:,:) = sinking(:,:,:) * zfact * tmask(:,:,:) ! Export of carbon in the water column |
---|
| 553 | CALL iom_put( "EXPC" , zw3d ) |
---|
| 554 | ENDIF |
---|
| 555 | IF( iom_use( "EXPN" ) ) THEN |
---|
| 556 | zw3d(:,:,:) = sinking(:,:,:) * zfact * tmask(:,:,:) ! Export of carbon in the water column |
---|
| 557 | CALL iom_put( "EXPN" , zw3d ) |
---|
| 558 | ENDIF |
---|
| 559 | IF( iom_use( "EXPCAL" ) ) THEN |
---|
| 560 | zw3d(:,:,:) = sinkcal(:,:,:) * zfact * tmask(:,:,:) ! Export of calcite |
---|
| 561 | CALL iom_put( "EXPCAL" , zw3d ) |
---|
| 562 | ENDIF |
---|
| 563 | IF( iom_use( "EXPSI" ) ) THEN |
---|
| 564 | zw3d(:,:,:) = sinksil(:,:,:) * zfact * tmask(:,:,:) ! Export of bigenic silica |
---|
| 565 | CALL iom_put( "EXPSI" , zw3d ) |
---|
| 566 | ENDIF |
---|
| 567 | IF( iom_use( "XNUM" ) ) THEN |
---|
| 568 | zw3d(:,:,:) = znum3d(:,:,:) * tmask(:,:,:) ! Number of particles on aggregats |
---|
| 569 | CALL iom_put( "XNUM" , zw3d ) |
---|
| 570 | ENDIF |
---|
| 571 | IF( iom_use( "WSC" ) ) THEN |
---|
| 572 | zw3d(:,:,:) = wsbio3(:,:,:) * tmask(:,:,:) ! Sinking speed of carbon particles |
---|
| 573 | CALL iom_put( "WSC" , zw3d ) |
---|
| 574 | ENDIF |
---|
| 575 | IF( iom_use( "WSN" ) ) THEN |
---|
| 576 | zw3d(:,:,:) = wsbio4(:,:,:) * tmask(:,:,:) ! Sinking speed of particles number |
---|
| 577 | CALL iom_put( "WSN" , zw3d ) |
---|
| 578 | ENDIF |
---|
| 579 | ! |
---|
| 580 | CALL wrk_dealloc( jpi, jpj, zw2d ) |
---|
| 581 | CALL wrk_dealloc( jpi, jpj, jpk, zw3d ) |
---|
| 582 | ELSE |
---|
| 583 | IF( ln_diatrc ) THEN |
---|
| 584 | zfact = 1.e3 * rfact2r |
---|
| 585 | trc2d(:,: ,jp_pcs0_2d + 4) = sinking (:,:,ik100) * zfact * tmask(:,:,1) |
---|
| 586 | trc2d(:,: ,jp_pcs0_2d + 5) = sinking2(:,:,ik100) * zfact * tmask(:,:,1) |
---|
| 587 | trc2d(:,: ,jp_pcs0_2d + 6) = sinkfer (:,:,ik100) * zfact * tmask(:,:,1) |
---|
| 588 | trc2d(:,: ,jp_pcs0_2d + 7) = sinksil (:,:,ik100) * zfact * tmask(:,:,1) |
---|
| 589 | trc2d(:,: ,jp_pcs0_2d + 8) = sinkcal (:,:,ik100) * zfact * tmask(:,:,1) |
---|
| 590 | trc3d(:,:,:,jp_pcs0_3d + 11) = sinking (:,:,:) * zfact * tmask(:,:,:) |
---|
| 591 | trc3d(:,:,:,jp_pcs0_3d + 12) = sinking2(:,:,:) * zfact * tmask(:,:,:) |
---|
| 592 | trc3d(:,:,:,jp_pcs0_3d + 13) = sinksil (:,:,:) * zfact * tmask(:,:,:) |
---|
| 593 | trc3d(:,:,:,jp_pcs0_3d + 14) = sinkcal (:,:,:) * zfact * tmask(:,:,:) |
---|
| 594 | trc3d(:,:,:,jp_pcs0_3d + 15) = znum3d (:,:,:) * tmask(:,:,:) |
---|
| 595 | trc3d(:,:,:,jp_pcs0_3d + 16) = wsbio3 (:,:,:) * tmask(:,:,:) |
---|
| 596 | trc3d(:,:,:,jp_pcs0_3d + 17) = wsbio4 (:,:,:) * tmask(:,:,:) |
---|
[3443] | 597 | ENDIF |
---|
| 598 | ENDIF |
---|
[4996] | 599 | |
---|
[3443] | 600 | ! |
---|
| 601 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
---|
| 602 | WRITE(charout, FMT="('sink')") |
---|
| 603 | CALL prt_ctl_trc_info(charout) |
---|
| 604 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
---|
| 605 | ENDIF |
---|
| 606 | ! |
---|
| 607 | CALL wrk_dealloc( jpi, jpj, jpk, znum3d ) |
---|
| 608 | ! |
---|
| 609 | IF( nn_timing == 1 ) CALL timing_stop('p4z_sink') |
---|
| 610 | ! |
---|
| 611 | END SUBROUTINE p4z_sink |
---|
| 612 | |
---|
| 613 | |
---|
| 614 | SUBROUTINE p4z_sink_init |
---|
| 615 | !!---------------------------------------------------------------------- |
---|
| 616 | !! *** ROUTINE p4z_sink_init *** |
---|
| 617 | !! |
---|
| 618 | !! ** Purpose : Initialization of sinking parameters |
---|
| 619 | !! Kriest parameterization only |
---|
| 620 | !! |
---|
| 621 | !! ** Method : Read the nampiskrs namelist and check the parameters |
---|
| 622 | !! called at the first timestep |
---|
| 623 | !! |
---|
| 624 | !! ** input : Namelist nampiskrs |
---|
| 625 | !!---------------------------------------------------------------------- |
---|
| 626 | INTEGER :: jk, jn, kiter |
---|
[4147] | 627 | INTEGER :: ios ! Local integer output status for namelist read |
---|
[3443] | 628 | REAL(wp) :: znum, zdiv |
---|
| 629 | REAL(wp) :: zws, zwr, zwl,wmax, znummax |
---|
| 630 | REAL(wp) :: zmin, zmax, zl, zr, xacc |
---|
| 631 | ! |
---|
| 632 | NAMELIST/nampiskrs/ xkr_sfact, xkr_stick , & |
---|
| 633 | & xkr_nnano, xkr_ndiat, xkr_nmicro, xkr_nmeso, xkr_naggr |
---|
| 634 | !!---------------------------------------------------------------------- |
---|
| 635 | ! |
---|
| 636 | IF( nn_timing == 1 ) CALL timing_start('p4z_sink_init') |
---|
| 637 | ! |
---|
| 638 | |
---|
[4147] | 639 | REWIND( numnatp_ref ) ! Namelist nampiskrs in reference namelist : Pisces sinking Kriest |
---|
| 640 | READ ( numnatp_ref, nampiskrs, IOSTAT = ios, ERR = 901) |
---|
| 641 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampiskrs in reference namelist', lwp ) |
---|
| 642 | |
---|
| 643 | REWIND( numnatp_cfg ) ! Namelist nampiskrs in configuration namelist : Pisces sinking Kriest |
---|
| 644 | READ ( numnatp_cfg, nampiskrs, IOSTAT = ios, ERR = 902 ) |
---|
| 645 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampiskrs in configuration namelist', lwp ) |
---|
[4624] | 646 | IF(lwm) WRITE ( numonp, nampiskrs ) |
---|
[4147] | 647 | |
---|
[3443] | 648 | IF(lwp) THEN |
---|
| 649 | WRITE(numout,*) |
---|
| 650 | WRITE(numout,*) ' Namelist : nampiskrs' |
---|
| 651 | WRITE(numout,*) ' Sinking factor xkr_sfact = ', xkr_sfact |
---|
| 652 | WRITE(numout,*) ' Stickiness xkr_stick = ', xkr_stick |
---|
| 653 | WRITE(numout,*) ' Nbr of cell in nano size class xkr_nnano = ', xkr_nnano |
---|
| 654 | WRITE(numout,*) ' Nbr of cell in diatoms size class xkr_ndiat = ', xkr_ndiat |
---|
| 655 | WRITE(numout,*) ' Nbr of cell in microzoo size class xkr_nmicro = ', xkr_nmicro |
---|
| 656 | WRITE(numout,*) ' Nbr of cell in mesozoo size class xkr_nmeso = ', xkr_nmeso |
---|
| 657 | WRITE(numout,*) ' Nbr of cell in aggregates size class xkr_naggr = ', xkr_naggr |
---|
| 658 | ENDIF |
---|
| 659 | |
---|
| 660 | |
---|
| 661 | ! max and min vertical particle speed |
---|
| 662 | xkr_wsbio_min = xkr_sfact * xkr_mass_min**xkr_eta |
---|
| 663 | xkr_wsbio_max = xkr_sfact * xkr_mass_max**xkr_eta |
---|
| 664 | IF (lwp) WRITE(numout,*) ' max and min vertical particle speed ', xkr_wsbio_min, xkr_wsbio_max |
---|
| 665 | |
---|
| 666 | ! |
---|
| 667 | ! effect of the sizes of the different living pools on particle numbers |
---|
| 668 | ! nano = 2um-20um -> mean size=6.32 um -> ws=2.596 -> xnum=xnnano=2.337 |
---|
| 669 | ! diat and microzoo = 10um-200um -> 44.7 -> 8.732 -> xnum=xndiat=3.718 |
---|
| 670 | ! mesozoo = 200um-2mm -> 632.45 -> 45.14 -> xnum=xnmeso=7.147 |
---|
| 671 | ! aggregates = 200um-10mm -> 1414 -> 74.34 -> xnum=xnaggr=9.877 |
---|
| 672 | ! doc aggregates = 1um |
---|
| 673 | ! ---------------------------------------------------------- |
---|
| 674 | |
---|
| 675 | xkr_dnano = 1. / ( xkr_massp * xkr_nnano ) |
---|
| 676 | xkr_ddiat = 1. / ( xkr_massp * xkr_ndiat ) |
---|
| 677 | xkr_dmicro = 1. / ( xkr_massp * xkr_nmicro ) |
---|
| 678 | xkr_dmeso = 1. / ( xkr_massp * xkr_nmeso ) |
---|
| 679 | xkr_daggr = 1. / ( xkr_massp * xkr_naggr ) |
---|
| 680 | |
---|
| 681 | !!--------------------------------------------------------------------- |
---|
| 682 | !! 'key_kriest' ??? |
---|
| 683 | !!--------------------------------------------------------------------- |
---|
| 684 | ! COMPUTATION OF THE VERTICAL PROFILE OF MAXIMUM SINKING SPEED |
---|
| 685 | ! Search of the maximum number of particles in aggregates for each k-level. |
---|
| 686 | ! Bissection Method |
---|
| 687 | !-------------------------------------------------------------------- |
---|
| 688 | IF (lwp) THEN |
---|
| 689 | WRITE(numout,*) |
---|
| 690 | WRITE(numout,*)' kriest : Compute maximum number of particles in aggregates' |
---|
| 691 | ENDIF |
---|
| 692 | |
---|
| 693 | xacc = 0.001_wp |
---|
| 694 | kiter = 50 |
---|
| 695 | zmin = 1.10_wp |
---|
| 696 | zmax = xkr_mass_max / xkr_mass_min |
---|
| 697 | xkr_frac = zmax |
---|
| 698 | |
---|
| 699 | DO jk = 1,jpk |
---|
| 700 | zl = zmin |
---|
| 701 | zr = zmax |
---|
| 702 | wmax = 0.5 * fse3t(1,1,jk) * rday * float(niter1max) / rfact2 |
---|
| 703 | zdiv = xkr_zeta + xkr_eta - xkr_eta * zl |
---|
| 704 | znum = zl - 1. |
---|
| 705 | zwl = xkr_wsbio_min * xkr_zeta / zdiv & |
---|
| 706 | & - ( xkr_wsbio_max * xkr_eta * znum * & |
---|
| 707 | & xkr_frac**( -xkr_zeta / znum ) / zdiv ) & |
---|
| 708 | & - wmax |
---|
| 709 | |
---|
| 710 | zdiv = xkr_zeta + xkr_eta - xkr_eta * zr |
---|
| 711 | znum = zr - 1. |
---|
| 712 | zwr = xkr_wsbio_min * xkr_zeta / zdiv & |
---|
| 713 | & - ( xkr_wsbio_max * xkr_eta * znum * & |
---|
| 714 | & xkr_frac**( -xkr_zeta / znum ) / zdiv ) & |
---|
| 715 | & - wmax |
---|
| 716 | iflag: DO jn = 1, kiter |
---|
| 717 | IF ( zwl == 0._wp ) THEN ; znummax = zl |
---|
| 718 | ELSEIF( zwr == 0._wp ) THEN ; znummax = zr |
---|
| 719 | ELSE |
---|
| 720 | znummax = ( zr + zl ) / 2. |
---|
| 721 | zdiv = xkr_zeta + xkr_eta - xkr_eta * znummax |
---|
| 722 | znum = znummax - 1. |
---|
| 723 | zws = xkr_wsbio_min * xkr_zeta / zdiv & |
---|
| 724 | & - ( xkr_wsbio_max * xkr_eta * znum * & |
---|
| 725 | & xkr_frac**( -xkr_zeta / znum ) / zdiv ) & |
---|
| 726 | & - wmax |
---|
| 727 | IF( zws * zwl < 0. ) THEN ; zr = znummax |
---|
| 728 | ELSE ; zl = znummax |
---|
| 729 | ENDIF |
---|
| 730 | zdiv = xkr_zeta + xkr_eta - xkr_eta * zl |
---|
| 731 | znum = zl - 1. |
---|
| 732 | zwl = xkr_wsbio_min * xkr_zeta / zdiv & |
---|
| 733 | & - ( xkr_wsbio_max * xkr_eta * znum * & |
---|
| 734 | & xkr_frac**( -xkr_zeta / znum ) / zdiv ) & |
---|
| 735 | & - wmax |
---|
| 736 | |
---|
| 737 | zdiv = xkr_zeta + xkr_eta - xkr_eta * zr |
---|
| 738 | znum = zr - 1. |
---|
| 739 | zwr = xkr_wsbio_min * xkr_zeta / zdiv & |
---|
| 740 | & - ( xkr_wsbio_max * xkr_eta * znum * & |
---|
| 741 | & xkr_frac**( -xkr_zeta / znum ) / zdiv ) & |
---|
| 742 | & - wmax |
---|
| 743 | ! |
---|
| 744 | IF ( ABS ( zws ) <= xacc ) EXIT iflag |
---|
| 745 | ! |
---|
| 746 | ENDIF |
---|
| 747 | ! |
---|
| 748 | END DO iflag |
---|
| 749 | |
---|
| 750 | xnumm(jk) = znummax |
---|
| 751 | IF (lwp) WRITE(numout,*) ' jk = ', jk, ' wmax = ', wmax,' xnum max = ', xnumm(jk) |
---|
| 752 | ! |
---|
| 753 | END DO |
---|
| 754 | ! |
---|
[4996] | 755 | ik100 = 10 ! last level where depth less than 100 m |
---|
| 756 | DO jk = jpkm1, 1, -1 |
---|
| 757 | IF( gdept_1d(jk) > 100. ) iksed = jk - 1 |
---|
| 758 | END DO |
---|
| 759 | IF (lwp) WRITE(numout,*) |
---|
| 760 | IF (lwp) WRITE(numout,*) ' Level corresponding to 100m depth ', ik100 + 1 |
---|
| 761 | IF (lwp) WRITE(numout,*) |
---|
| 762 | ! |
---|
[3481] | 763 | t_oce_co2_exp = 0._wp |
---|
| 764 | ! |
---|
[3443] | 765 | IF( nn_timing == 1 ) CALL timing_stop('p4z_sink_init') |
---|
| 766 | ! |
---|
| 767 | END SUBROUTINE p4z_sink_init |
---|
| 768 | |
---|
| 769 | #endif |
---|
| 770 | |
---|
| 771 | SUBROUTINE p4z_sink2( pwsink, psinkflx, jp_tra, kiter ) |
---|
| 772 | !!--------------------------------------------------------------------- |
---|
| 773 | !! *** ROUTINE p4z_sink2 *** |
---|
| 774 | !! |
---|
| 775 | !! ** Purpose : Compute the sedimentation terms for the various sinking |
---|
| 776 | !! particles. The scheme used to compute the trends is based |
---|
| 777 | !! on MUSCL. |
---|
| 778 | !! |
---|
| 779 | !! ** Method : - this ROUTINE compute not exactly the advection but the |
---|
| 780 | !! transport term, i.e. div(u*tra). |
---|
| 781 | !!--------------------------------------------------------------------- |
---|
| 782 | ! |
---|
| 783 | INTEGER , INTENT(in ) :: jp_tra ! tracer index index |
---|
| 784 | INTEGER , INTENT(in ) :: kiter ! number of iterations for time-splitting |
---|
| 785 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj,jpk) :: pwsink ! sinking speed |
---|
| 786 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj,jpk) :: psinkflx ! sinking fluxe |
---|
| 787 | !! |
---|
| 788 | INTEGER :: ji, jj, jk, jn |
---|
| 789 | REAL(wp) :: zigma,zew,zign, zflx, zstep |
---|
[3494] | 790 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ztraz, zakz, zwsink2, ztrb |
---|
[3443] | 791 | !!--------------------------------------------------------------------- |
---|
| 792 | ! |
---|
| 793 | IF( nn_timing == 1 ) CALL timing_start('p4z_sink2') |
---|
| 794 | ! |
---|
| 795 | ! Allocate temporary workspace |
---|
[3494] | 796 | CALL wrk_alloc( jpi, jpj, jpk, ztraz, zakz, zwsink2, ztrb ) |
---|
[3443] | 797 | |
---|
| 798 | zstep = rfact2 / FLOAT( kiter ) / 2. |
---|
| 799 | |
---|
| 800 | ztraz(:,:,:) = 0.e0 |
---|
| 801 | zakz (:,:,:) = 0.e0 |
---|
[3494] | 802 | ztrb (:,:,:) = trn(:,:,:,jp_tra) |
---|
[3443] | 803 | |
---|
| 804 | DO jk = 1, jpkm1 |
---|
| 805 | zwsink2(:,:,jk+1) = -pwsink(:,:,jk) / rday * tmask(:,:,jk+1) |
---|
| 806 | END DO |
---|
| 807 | zwsink2(:,:,1) = 0.e0 |
---|
| 808 | IF( lk_degrad ) THEN |
---|
| 809 | zwsink2(:,:,:) = zwsink2(:,:,:) * facvol(:,:,:) |
---|
| 810 | ENDIF |
---|
| 811 | |
---|
| 812 | |
---|
| 813 | ! Vertical advective flux |
---|
| 814 | DO jn = 1, 2 |
---|
| 815 | ! first guess of the slopes interior values |
---|
| 816 | DO jk = 2, jpkm1 |
---|
| 817 | ztraz(:,:,jk) = ( trn(:,:,jk-1,jp_tra) - trn(:,:,jk,jp_tra) ) * tmask(:,:,jk) |
---|
| 818 | END DO |
---|
| 819 | ztraz(:,:,1 ) = 0.0 |
---|
| 820 | ztraz(:,:,jpk) = 0.0 |
---|
| 821 | |
---|
| 822 | ! slopes |
---|
| 823 | DO jk = 2, jpkm1 |
---|
| 824 | DO jj = 1,jpj |
---|
| 825 | DO ji = 1, jpi |
---|
| 826 | zign = 0.25 + SIGN( 0.25, ztraz(ji,jj,jk) * ztraz(ji,jj,jk+1) ) |
---|
| 827 | zakz(ji,jj,jk) = ( ztraz(ji,jj,jk) + ztraz(ji,jj,jk+1) ) * zign |
---|
| 828 | END DO |
---|
| 829 | END DO |
---|
| 830 | END DO |
---|
| 831 | |
---|
| 832 | ! Slopes limitation |
---|
| 833 | DO jk = 2, jpkm1 |
---|
| 834 | DO jj = 1, jpj |
---|
| 835 | DO ji = 1, jpi |
---|
| 836 | zakz(ji,jj,jk) = SIGN( 1., zakz(ji,jj,jk) ) * & |
---|
| 837 | & MIN( ABS( zakz(ji,jj,jk) ), 2. * ABS(ztraz(ji,jj,jk+1)), 2. * ABS(ztraz(ji,jj,jk) ) ) |
---|
| 838 | END DO |
---|
| 839 | END DO |
---|
| 840 | END DO |
---|
| 841 | |
---|
| 842 | ! vertical advective flux |
---|
| 843 | DO jk = 1, jpkm1 |
---|
| 844 | DO jj = 1, jpj |
---|
| 845 | DO ji = 1, jpi |
---|
| 846 | zigma = zwsink2(ji,jj,jk+1) * zstep / fse3w(ji,jj,jk+1) |
---|
| 847 | zew = zwsink2(ji,jj,jk+1) |
---|
| 848 | psinkflx(ji,jj,jk+1) = -zew * ( trn(ji,jj,jk,jp_tra) - 0.5 * ( 1 + zigma ) * zakz(ji,jj,jk) ) * zstep |
---|
| 849 | END DO |
---|
| 850 | END DO |
---|
| 851 | END DO |
---|
| 852 | ! |
---|
| 853 | ! Boundary conditions |
---|
| 854 | psinkflx(:,:,1 ) = 0.e0 |
---|
| 855 | psinkflx(:,:,jpk) = 0.e0 |
---|
| 856 | |
---|
| 857 | DO jk=1,jpkm1 |
---|
| 858 | DO jj = 1,jpj |
---|
| 859 | DO ji = 1, jpi |
---|
| 860 | zflx = ( psinkflx(ji,jj,jk) - psinkflx(ji,jj,jk+1) ) / fse3t(ji,jj,jk) |
---|
| 861 | trn(ji,jj,jk,jp_tra) = trn(ji,jj,jk,jp_tra) + zflx |
---|
| 862 | END DO |
---|
| 863 | END DO |
---|
| 864 | END DO |
---|
| 865 | |
---|
| 866 | ENDDO |
---|
| 867 | |
---|
[3494] | 868 | DO jk = 1,jpkm1 |
---|
[3443] | 869 | DO jj = 1,jpj |
---|
| 870 | DO ji = 1, jpi |
---|
| 871 | zflx = ( psinkflx(ji,jj,jk) - psinkflx(ji,jj,jk+1) ) / fse3t(ji,jj,jk) |
---|
[3494] | 872 | ztrb(ji,jj,jk) = ztrb(ji,jj,jk) + 2. * zflx |
---|
[3443] | 873 | END DO |
---|
| 874 | END DO |
---|
| 875 | END DO |
---|
| 876 | |
---|
[3494] | 877 | trn(:,:,:,jp_tra) = ztrb(:,:,:) |
---|
| 878 | psinkflx(:,:,:) = 2. * psinkflx(:,:,:) |
---|
[3443] | 879 | ! |
---|
[3494] | 880 | CALL wrk_dealloc( jpi, jpj, jpk, ztraz, zakz, zwsink2, ztrb ) |
---|
[3443] | 881 | ! |
---|
| 882 | IF( nn_timing == 1 ) CALL timing_stop('p4z_sink2') |
---|
| 883 | ! |
---|
| 884 | END SUBROUTINE p4z_sink2 |
---|
| 885 | |
---|
| 886 | |
---|
| 887 | INTEGER FUNCTION p4z_sink_alloc() |
---|
| 888 | !!---------------------------------------------------------------------- |
---|
| 889 | !! *** ROUTINE p4z_sink_alloc *** |
---|
| 890 | !!---------------------------------------------------------------------- |
---|
| 891 | ALLOCATE( wsbio3 (jpi,jpj,jpk) , wsbio4 (jpi,jpj,jpk) , wscal(jpi,jpj,jpk) , & |
---|
| 892 | & sinking(jpi,jpj,jpk) , sinking2(jpi,jpj,jpk) , & |
---|
| 893 | & sinkcal(jpi,jpj,jpk) , sinksil (jpi,jpj,jpk) , & |
---|
| 894 | #if defined key_kriest |
---|
| 895 | & xnumm(jpk) , & |
---|
| 896 | #else |
---|
| 897 | & sinkfer2(jpi,jpj,jpk) , & |
---|
| 898 | #endif |
---|
| 899 | & sinkfer(jpi,jpj,jpk) , STAT=p4z_sink_alloc ) |
---|
| 900 | ! |
---|
| 901 | IF( p4z_sink_alloc /= 0 ) CALL ctl_warn('p4z_sink_alloc : failed to allocate arrays.') |
---|
| 902 | ! |
---|
| 903 | END FUNCTION p4z_sink_alloc |
---|
| 904 | |
---|
| 905 | #else |
---|
| 906 | !!====================================================================== |
---|
| 907 | !! Dummy module : No PISCES bio-model |
---|
| 908 | !!====================================================================== |
---|
| 909 | CONTAINS |
---|
| 910 | SUBROUTINE p4z_sink ! Empty routine |
---|
| 911 | END SUBROUTINE p4z_sink |
---|
| 912 | #endif |
---|
| 913 | |
---|
| 914 | !!====================================================================== |
---|
| 915 | END MODULE p4zsink |
---|