[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 sms_pisces ! PISCES Source Minus Sink variables |
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[7398] | 19 | USE prtctl_trc, ONLY: prt_ctl_trc_info,prt_ctl_trc ! print control for debugging |
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| 20 | USE lib_mpp, ONLY: mpp_max |
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[3443] | 21 | |
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| 22 | IMPLICIT NONE |
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| 23 | PRIVATE |
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| 24 | |
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| 25 | PUBLIC p4z_sink ! called in p4zbio.F90 |
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| 26 | PUBLIC p4z_sink_init ! called in trcsms_pisces.F90 |
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| 27 | PUBLIC p4z_sink_alloc |
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| 28 | |
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| 29 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: wsbio3 !: POC sinking speed |
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| 30 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: wsbio4 !: GOC sinking speed |
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| 31 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: wscal !: Calcite and BSi sinking speeds |
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| 32 | |
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| 33 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinking, sinking2 !: POC sinking fluxes |
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| 34 | ! ! (different meanings depending on the parameterization) |
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| 35 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkcal, sinksil !: CaCO3 and BSi sinking fluxes |
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| 36 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkfer !: Small BFe sinking fluxes |
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| 37 | #if ! defined key_kriest |
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| 38 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sinkfer2 !: Big iron sinking fluxes |
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| 39 | #endif |
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| 40 | |
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[4996] | 41 | INTEGER :: ik100 |
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[3443] | 42 | |
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| 43 | #if defined key_kriest |
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[4147] | 44 | REAL(wp) :: xkr_sfact !: Sinking factor |
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| 45 | REAL(wp) :: xkr_stick !: Stickiness |
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| 46 | REAL(wp) :: xkr_nnano !: Nbr of cell in nano size class |
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| 47 | REAL(wp) :: xkr_ndiat !: Nbr of cell in diatoms size class |
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| 48 | REAL(wp) :: xkr_nmicro !: Nbr of cell in microzoo size class |
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| 49 | REAL(wp) :: xkr_nmeso !: Nbr of cell in mesozoo size class |
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| 50 | REAL(wp) :: xkr_naggr !: Nbr of cell in aggregates size class |
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[3443] | 51 | |
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| 52 | REAL(wp) :: xkr_frac |
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| 53 | |
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| 54 | REAL(wp), PUBLIC :: xkr_dnano !: Size of particles in nano pool |
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| 55 | REAL(wp), PUBLIC :: xkr_ddiat !: Size of particles in diatoms pool |
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| 56 | REAL(wp), PUBLIC :: xkr_dmicro !: Size of particles in microzoo pool |
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| 57 | REAL(wp), PUBLIC :: xkr_dmeso !: Size of particles in mesozoo pool |
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| 58 | REAL(wp), PUBLIC :: xkr_daggr !: Size of particles in aggregates pool |
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| 59 | REAL(wp), PUBLIC :: xkr_wsbio_min !: min vertical particle speed |
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| 60 | REAL(wp), PUBLIC :: xkr_wsbio_max !: max vertical particle speed |
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| 61 | |
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| 62 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:) :: xnumm !: maximum number of particles in aggregates |
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| 63 | #endif |
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| 64 | |
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| 65 | !!* Substitution |
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| 66 | # include "top_substitute.h90" |
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| 67 | !!---------------------------------------------------------------------- |
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| 68 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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[10207] | 69 | !! $Id$ |
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[3443] | 70 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 71 | !!---------------------------------------------------------------------- |
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| 72 | CONTAINS |
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| 73 | |
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| 74 | #if ! defined key_kriest |
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| 75 | !!---------------------------------------------------------------------- |
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| 76 | !! 'standard sinking parameterisation' ??? |
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| 77 | !!---------------------------------------------------------------------- |
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| 78 | |
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[5602] | 79 | SUBROUTINE p4z_sink ( kt, knt ) |
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[3443] | 80 | !!--------------------------------------------------------------------- |
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| 81 | !! *** ROUTINE p4z_sink *** |
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| 82 | !! |
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| 83 | !! ** Purpose : Compute vertical flux of particulate matter due to |
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| 84 | !! gravitational sinking |
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| 85 | !! |
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| 86 | !! ** Method : - ??? |
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| 87 | !!--------------------------------------------------------------------- |
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[5602] | 88 | INTEGER, INTENT(in) :: kt, knt |
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[3443] | 89 | INTEGER :: ji, jj, jk, jit |
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| 90 | INTEGER :: iiter1, iiter2 |
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| 91 | REAL(wp) :: zagg1, zagg2, zagg3, zagg4 |
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| 92 | REAL(wp) :: zagg , zaggfe, zaggdoc, zaggdoc2, zaggdoc3 |
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| 93 | REAL(wp) :: zfact, zwsmax, zmax, zstep |
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| 94 | CHARACTER (len=25) :: charout |
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[4996] | 95 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zw3d |
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| 96 | REAL(wp), POINTER, DIMENSION(:,: ) :: zw2d |
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[3443] | 97 | !!--------------------------------------------------------------------- |
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| 98 | ! |
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| 99 | IF( nn_timing == 1 ) CALL timing_start('p4z_sink') |
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| 100 | ! |
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| 101 | ! Sinking speeds of detritus is increased with depth as shown |
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| 102 | ! by data and from the coagulation theory |
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| 103 | ! ----------------------------------------------------------- |
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| 104 | DO jk = 1, jpkm1 |
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| 105 | DO jj = 1, jpj |
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| 106 | DO ji = 1,jpi |
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| 107 | zmax = MAX( heup(ji,jj), hmld(ji,jj) ) |
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| 108 | zfact = MAX( 0., fsdepw(ji,jj,jk+1) - zmax ) / 5000._wp |
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| 109 | wsbio4(ji,jj,jk) = wsbio2 + ( 200.- wsbio2 ) * zfact |
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| 110 | END DO |
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| 111 | END DO |
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| 112 | END DO |
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| 113 | |
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| 114 | ! limit the values of the sinking speeds to avoid numerical instabilities |
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| 115 | wsbio3(:,:,:) = wsbio |
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| 116 | wscal (:,:,:) = wsbio4(:,:,:) |
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| 117 | ! |
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| 118 | ! OA This is (I hope) a temporary solution for the problem that may |
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| 119 | ! OA arise in specific situation where the CFL criterion is broken |
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| 120 | ! OA for vertical sedimentation of particles. To avoid this, a time |
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| 121 | ! OA splitting algorithm has been coded. A specific maximum |
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| 122 | ! OA iteration number is provided and may be specified in the namelist |
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| 123 | ! OA This is to avoid very large iteration number when explicit free |
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| 124 | ! OA surface is used (for instance). When niter?max is set to 1, |
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| 125 | ! OA this computation is skipped. The crude old threshold method is |
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| 126 | ! OA then applied. This also happens when niter exceeds nitermax. |
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| 127 | IF( MAX( niter1max, niter2max ) == 1 ) THEN |
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| 128 | iiter1 = 1 |
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| 129 | iiter2 = 1 |
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| 130 | ELSE |
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| 131 | iiter1 = 1 |
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| 132 | iiter2 = 1 |
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| 133 | DO jk = 1, jpkm1 |
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| 134 | DO jj = 1, jpj |
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| 135 | DO ji = 1, jpi |
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| 136 | IF( tmask(ji,jj,jk) == 1) THEN |
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[7520] | 137 | #if defined key_crs |
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| 138 | zwsmax = 0.5 * e3t_max_crs(ji,jj,jk) / xstep |
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| 139 | #else |
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[3829] | 140 | zwsmax = 0.5 * fse3t(ji,jj,jk) / xstep |
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[7520] | 141 | #endif |
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[3443] | 142 | iiter1 = MAX( iiter1, INT( wsbio3(ji,jj,jk) / zwsmax ) ) |
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| 143 | iiter2 = MAX( iiter2, INT( wsbio4(ji,jj,jk) / zwsmax ) ) |
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| 144 | ENDIF |
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| 145 | END DO |
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| 146 | END DO |
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| 147 | END DO |
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| 148 | IF( lk_mpp ) THEN |
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| 149 | CALL mpp_max( iiter1 ) |
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| 150 | CALL mpp_max( iiter2 ) |
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| 151 | ENDIF |
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| 152 | iiter1 = MIN( iiter1, niter1max ) |
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| 153 | iiter2 = MIN( iiter2, niter2max ) |
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| 154 | ENDIF |
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| 155 | |
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| 156 | DO jk = 1,jpkm1 |
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| 157 | DO jj = 1, jpj |
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| 158 | DO ji = 1, jpi |
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| 159 | IF( tmask(ji,jj,jk) == 1 ) THEN |
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[7520] | 160 | zwsmax = 0.5 * fse3t(ji,jj,jk) / xstep |
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[3443] | 161 | wsbio3(ji,jj,jk) = MIN( wsbio3(ji,jj,jk), zwsmax * FLOAT( iiter1 ) ) |
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| 162 | wsbio4(ji,jj,jk) = MIN( wsbio4(ji,jj,jk), zwsmax * FLOAT( iiter2 ) ) |
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| 163 | ENDIF |
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| 164 | END DO |
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| 165 | END DO |
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| 166 | END DO |
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| 167 | |
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| 168 | ! Initializa to zero all the sinking arrays |
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| 169 | ! ----------------------------------------- |
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| 170 | sinking (:,:,:) = 0.e0 |
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| 171 | sinking2(:,:,:) = 0.e0 |
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| 172 | sinkcal (:,:,:) = 0.e0 |
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| 173 | sinkfer (:,:,:) = 0.e0 |
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| 174 | sinksil (:,:,:) = 0.e0 |
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| 175 | sinkfer2(:,:,:) = 0.e0 |
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| 176 | |
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| 177 | ! Compute the sedimentation term using p4zsink2 for all the sinking particles |
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| 178 | ! ----------------------------------------------------- |
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| 179 | DO jit = 1, iiter1 |
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| 180 | CALL p4z_sink2( wsbio3, sinking , jppoc, iiter1 ) |
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| 181 | CALL p4z_sink2( wsbio3, sinkfer , jpsfe, iiter1 ) |
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| 182 | END DO |
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| 183 | |
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| 184 | DO jit = 1, iiter2 |
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| 185 | CALL p4z_sink2( wsbio4, sinking2, jpgoc, iiter2 ) |
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| 186 | CALL p4z_sink2( wsbio4, sinkfer2, jpbfe, iiter2 ) |
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| 187 | CALL p4z_sink2( wsbio4, sinksil , jpgsi, iiter2 ) |
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| 188 | CALL p4z_sink2( wscal , sinkcal , jpcal, iiter2 ) |
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| 189 | END DO |
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| 190 | |
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| 191 | ! Exchange between organic matter compartments due to coagulation/disaggregation |
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| 192 | ! --------------------------------------------------- |
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| 193 | DO jk = 1, jpkm1 |
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| 194 | DO jj = 1, jpj |
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| 195 | DO ji = 1, jpi |
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| 196 | ! |
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| 197 | zstep = xstep |
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| 198 | # if defined key_degrad |
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| 199 | zstep = zstep * facvol(ji,jj,jk) |
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| 200 | # endif |
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| 201 | zfact = zstep * xdiss(ji,jj,jk) |
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| 202 | ! Part I : Coagulation dependent on turbulence |
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[5602] | 203 | zagg1 = 25.9 * zfact * trb(ji,jj,jk,jppoc) * trb(ji,jj,jk,jppoc) |
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| 204 | zagg2 = 4452. * zfact * trb(ji,jj,jk,jppoc) * trb(ji,jj,jk,jpgoc) |
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[3443] | 205 | |
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| 206 | ! Part II : Differential settling |
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| 207 | |
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| 208 | ! Aggregation of small into large particles |
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[5602] | 209 | zagg3 = 47.1 * zstep * trb(ji,jj,jk,jppoc) * trb(ji,jj,jk,jpgoc) |
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| 210 | zagg4 = 3.3 * zstep * trb(ji,jj,jk,jppoc) * trb(ji,jj,jk,jppoc) |
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[3443] | 211 | |
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| 212 | zagg = zagg1 + zagg2 + zagg3 + zagg4 |
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[5602] | 213 | zaggfe = zagg * trb(ji,jj,jk,jpsfe) / ( trb(ji,jj,jk,jppoc) + rtrn ) |
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[3443] | 214 | |
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| 215 | ! Aggregation of DOC to POC : |
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| 216 | ! 1st term is shear aggregation of DOC-DOC |
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| 217 | ! 2nd term is shear aggregation of DOC-POC |
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| 218 | ! 3rd term is differential settling of DOC-POC |
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[5602] | 219 | zaggdoc = ( ( 0.369 * 0.3 * trb(ji,jj,jk,jpdoc) + 102.4 * trb(ji,jj,jk,jppoc) ) * zfact & |
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| 220 | & + 2.4 * zstep * trb(ji,jj,jk,jppoc) ) * 0.3 * trb(ji,jj,jk,jpdoc) |
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[3443] | 221 | ! transfer of DOC to GOC : |
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| 222 | ! 1st term is shear aggregation |
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| 223 | ! 2nd term is differential settling |
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[5602] | 224 | zaggdoc2 = ( 3.53E3 * zfact + 0.1 * zstep ) * trb(ji,jj,jk,jpgoc) * 0.3 * trb(ji,jj,jk,jpdoc) |
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[3443] | 225 | ! tranfer of DOC to POC due to brownian motion |
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[5602] | 226 | zaggdoc3 = ( 5095. * trb(ji,jj,jk,jppoc) + 114. * 0.3 * trb(ji,jj,jk,jpdoc) ) *zstep * 0.3 * trb(ji,jj,jk,jpdoc) |
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[3443] | 227 | |
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| 228 | ! Update the trends |
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| 229 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) - zagg + zaggdoc + zaggdoc3 |
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| 230 | tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zagg + zaggdoc2 |
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| 231 | tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) - zaggfe |
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| 232 | tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + zaggfe |
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| 233 | tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) - zaggdoc - zaggdoc2 - zaggdoc3 |
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| 234 | ! |
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| 235 | END DO |
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| 236 | END DO |
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| 237 | END DO |
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| 238 | |
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[4996] | 239 | |
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| 240 | ! Total carbon export per year |
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[5602] | 241 | IF( iom_use( "tcexp" ) .OR. ( ln_check_mass .AND. kt == nitend .AND. knt == nrdttrc ) ) & |
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[4996] | 242 | & t_oce_co2_exp = glob_sum( ( sinking(:,:,ik100) + sinking2(:,:,ik100) ) * e1e2t(:,:) * tmask(:,:,1) ) |
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[3481] | 243 | ! |
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[4996] | 244 | IF( lk_iomput ) THEN |
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[5602] | 245 | IF( knt == nrdttrc ) THEN |
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[4996] | 246 | CALL wrk_alloc( jpi, jpj, zw2d ) |
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| 247 | CALL wrk_alloc( jpi, jpj, jpk, zw3d ) |
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| 248 | zfact = 1.e+3 * rfact2r ! conversion from mol/l/kt to mol/m3/s |
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| 249 | ! |
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| 250 | IF( iom_use( "EPC100" ) ) THEN |
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| 251 | zw2d(:,:) = ( sinking(:,:,ik100) + sinking2(:,:,ik100) ) * zfact * tmask(:,:,1) ! Export of carbon at 100m |
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| 252 | CALL iom_put( "EPC100" , zw2d ) |
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| 253 | ENDIF |
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| 254 | IF( iom_use( "EPFE100" ) ) THEN |
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| 255 | zw2d(:,:) = ( sinkfer(:,:,ik100) + sinkfer2(:,:,ik100) ) * zfact * tmask(:,:,1) ! Export of iron at 100m |
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| 256 | CALL iom_put( "EPFE100" , zw2d ) |
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| 257 | ENDIF |
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| 258 | IF( iom_use( "EPCAL100" ) ) THEN |
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| 259 | zw2d(:,:) = sinkcal(:,:,ik100) * zfact * tmask(:,:,1) ! Export of calcite at 100m |
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| 260 | CALL iom_put( "EPCAL100" , zw2d ) |
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| 261 | ENDIF |
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| 262 | IF( iom_use( "EPSI100" ) ) THEN |
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| 263 | zw2d(:,:) = sinksil(:,:,ik100) * zfact * tmask(:,:,1) ! Export of bigenic silica at 100m |
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| 264 | CALL iom_put( "EPSI100" , zw2d ) |
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| 265 | ENDIF |
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| 266 | IF( iom_use( "EXPC" ) ) THEN |
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| 267 | zw3d(:,:,:) = ( sinking(:,:,:) + sinking2(:,:,:) ) * zfact * tmask(:,:,:) ! Export of carbon in the water column |
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| 268 | CALL iom_put( "EXPC" , zw3d ) |
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| 269 | ENDIF |
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| 270 | IF( iom_use( "EXPFE" ) ) THEN |
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| 271 | zw3d(:,:,:) = ( sinkfer(:,:,:) + sinkfer2(:,:,:) ) * zfact * tmask(:,:,:) ! Export of iron |
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| 272 | CALL iom_put( "EXPFE" , zw3d ) |
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| 273 | ENDIF |
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| 274 | IF( iom_use( "EXPCAL" ) ) THEN |
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| 275 | zw3d(:,:,:) = sinkcal(:,:,:) * zfact * tmask(:,:,:) ! Export of calcite |
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| 276 | CALL iom_put( "EXPCAL" , zw3d ) |
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| 277 | ENDIF |
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| 278 | IF( iom_use( "EXPSI" ) ) THEN |
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| 279 | zw3d(:,:,:) = sinksil(:,:,:) * zfact * tmask(:,:,:) ! Export of bigenic silica |
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| 280 | CALL iom_put( "EXPSI" , zw3d ) |
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| 281 | ENDIF |
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| 282 | IF( iom_use( "tcexp" ) ) CALL iom_put( "tcexp" , t_oce_co2_exp * zfact ) ! molC/s |
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| 283 | ! |
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| 284 | CALL wrk_dealloc( jpi, jpj, zw2d ) |
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| 285 | CALL wrk_dealloc( jpi, jpj, jpk, zw3d ) |
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| 286 | ENDIF |
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| 287 | ELSE |
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| 288 | IF( ln_diatrc ) THEN |
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| 289 | zfact = 1.e3 * rfact2r |
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| 290 | trc2d(:,:,jp_pcs0_2d + 4) = sinking (:,:,ik100) * zfact * tmask(:,:,1) |
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| 291 | trc2d(:,:,jp_pcs0_2d + 5) = sinking2(:,:,ik100) * zfact * tmask(:,:,1) |
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| 292 | trc2d(:,:,jp_pcs0_2d + 6) = sinkfer (:,:,ik100) * zfact * tmask(:,:,1) |
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| 293 | trc2d(:,:,jp_pcs0_2d + 7) = sinkfer2(:,:,ik100) * zfact * tmask(:,:,1) |
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| 294 | trc2d(:,:,jp_pcs0_2d + 8) = sinksil (:,:,ik100) * zfact * tmask(:,:,1) |
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| 295 | trc2d(:,:,jp_pcs0_2d + 9) = sinkcal (:,:,ik100) * zfact * tmask(:,:,1) |
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[3443] | 296 | ENDIF |
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| 297 | ENDIF |
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| 298 | ! |
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| 299 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 300 | WRITE(charout, FMT="('sink')") |
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| 301 | CALL prt_ctl_trc_info(charout) |
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| 302 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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| 303 | ENDIF |
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| 304 | ! |
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| 305 | IF( nn_timing == 1 ) CALL timing_stop('p4z_sink') |
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| 306 | ! |
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| 307 | END SUBROUTINE p4z_sink |
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| 308 | |
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| 309 | SUBROUTINE p4z_sink_init |
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| 310 | !!---------------------------------------------------------------------- |
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| 311 | !! *** ROUTINE p4z_sink_init *** |
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| 312 | !!---------------------------------------------------------------------- |
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[4996] | 313 | INTEGER :: jk |
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[3481] | 314 | |
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[4996] | 315 | ik100 = 10 ! last level where depth less than 100 m |
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| 316 | DO jk = jpkm1, 1, -1 |
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| 317 | IF( gdept_1d(jk) > 100. ) ik100 = jk - 1 |
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| 318 | END DO |
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| 319 | IF (lwp) WRITE(numout,*) |
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| 320 | IF (lwp) WRITE(numout,*) ' Level corresponding to 100m depth ', ik100 + 1 |
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| 321 | IF (lwp) WRITE(numout,*) |
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| 322 | ! |
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[3481] | 323 | t_oce_co2_exp = 0._wp |
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| 324 | ! |
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[3443] | 325 | END SUBROUTINE p4z_sink_init |
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| 326 | |
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| 327 | #else |
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| 328 | !!---------------------------------------------------------------------- |
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| 329 | !! 'Kriest sinking parameterisation' key_kriest ??? |
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| 330 | !!---------------------------------------------------------------------- |
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| 331 | |
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[5602] | 332 | SUBROUTINE p4z_sink ( kt, knt ) |
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[3443] | 333 | !!--------------------------------------------------------------------- |
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| 334 | !! *** ROUTINE p4z_sink *** |
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| 335 | !! |
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| 336 | !! ** Purpose : Compute vertical flux of particulate matter due to |
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| 337 | !! gravitational sinking - Kriest parameterization |
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| 338 | !! |
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| 339 | !! ** Method : - ??? |
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| 340 | !!--------------------------------------------------------------------- |
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| 341 | ! |
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[5602] | 342 | INTEGER, INTENT(in) :: kt, knt |
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[3443] | 343 | ! |
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| 344 | INTEGER :: ji, jj, jk, jit, niter1, niter2 |
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| 345 | REAL(wp) :: zagg1, zagg2, zagg3, zagg4, zagg5, zfract, zaggsi, zaggsh |
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| 346 | REAL(wp) :: zagg , zaggdoc, zaggdoc1, znumdoc |
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| 347 | REAL(wp) :: znum , zeps, zfm, zgm, zsm |
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| 348 | REAL(wp) :: zdiv , zdiv1, zdiv2, zdiv3, zdiv4, zdiv5 |
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| 349 | REAL(wp) :: zval1, zval2, zval3, zval4 |
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[4996] | 350 | REAL(wp) :: zfact |
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[3443] | 351 | INTEGER :: ik1 |
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| 352 | CHARACTER (len=25) :: charout |
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| 353 | REAL(wp), POINTER, DIMENSION(:,:,:) :: znum3d |
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[4996] | 354 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zw3d |
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| 355 | REAL(wp), POINTER, DIMENSION(:,: ) :: zw2d |
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[3443] | 356 | !!--------------------------------------------------------------------- |
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| 357 | ! |
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| 358 | IF( nn_timing == 1 ) CALL timing_start('p4z_sink') |
---|
| 359 | ! |
---|
| 360 | CALL wrk_alloc( jpi, jpj, jpk, znum3d ) |
---|
| 361 | ! |
---|
| 362 | ! Initialisation of variables used to compute Sinking Speed |
---|
| 363 | ! --------------------------------------------------------- |
---|
| 364 | |
---|
| 365 | znum3d(:,:,:) = 0.e0 |
---|
| 366 | zval1 = 1. + xkr_zeta |
---|
| 367 | zval2 = 1. + xkr_zeta + xkr_eta |
---|
| 368 | zval3 = 1. + xkr_eta |
---|
| 369 | |
---|
| 370 | ! Computation of the vertical sinking speed : Kriest et Evans, 2000 |
---|
| 371 | ! ----------------------------------------------------------------- |
---|
| 372 | |
---|
| 373 | DO jk = 1, jpkm1 |
---|
| 374 | DO jj = 1, jpj |
---|
| 375 | DO ji = 1, jpi |
---|
| 376 | IF( tmask(ji,jj,jk) /= 0.e0 ) THEN |
---|
[5602] | 377 | znum = trb(ji,jj,jk,jppoc) / ( trb(ji,jj,jk,jpnum) + rtrn ) / xkr_massp |
---|
[3443] | 378 | ! -------------- To avoid sinking speed over 50 m/day ------- |
---|
| 379 | znum = MIN( xnumm(jk), znum ) |
---|
| 380 | znum = MAX( 1.1 , znum ) |
---|
| 381 | znum3d(ji,jj,jk) = znum |
---|
| 382 | !------------------------------------------------------------ |
---|
| 383 | zeps = ( zval1 * znum - 1. )/ ( znum - 1. ) |
---|
| 384 | zfm = xkr_frac**( 1. - zeps ) |
---|
| 385 | zgm = xkr_frac**( zval1 - zeps ) |
---|
| 386 | zdiv = MAX( 1.e-4, ABS( zeps - zval2 ) ) * SIGN( 1., ( zeps - zval2 ) ) |
---|
| 387 | zdiv1 = zeps - zval3 |
---|
| 388 | wsbio3(ji,jj,jk) = xkr_wsbio_min * ( zeps - zval1 ) / zdiv & |
---|
| 389 | & - xkr_wsbio_max * zgm * xkr_eta / zdiv |
---|
| 390 | wsbio4(ji,jj,jk) = xkr_wsbio_min * ( zeps-1. ) / zdiv1 & |
---|
| 391 | & - xkr_wsbio_max * zfm * xkr_eta / zdiv1 |
---|
| 392 | IF( znum == 1.1) wsbio3(ji,jj,jk) = wsbio4(ji,jj,jk) |
---|
| 393 | ENDIF |
---|
| 394 | END DO |
---|
| 395 | END DO |
---|
| 396 | END DO |
---|
| 397 | |
---|
| 398 | wscal(:,:,:) = MAX( wsbio3(:,:,:), 30._wp ) |
---|
| 399 | |
---|
| 400 | ! INITIALIZE TO ZERO ALL THE SINKING ARRAYS |
---|
| 401 | ! ----------------------------------------- |
---|
| 402 | |
---|
| 403 | sinking (:,:,:) = 0.e0 |
---|
| 404 | sinking2(:,:,:) = 0.e0 |
---|
| 405 | sinkcal (:,:,:) = 0.e0 |
---|
| 406 | sinkfer (:,:,:) = 0.e0 |
---|
| 407 | sinksil (:,:,:) = 0.e0 |
---|
| 408 | |
---|
| 409 | ! Compute the sedimentation term using p4zsink2 for all the sinking particles |
---|
| 410 | ! ----------------------------------------------------- |
---|
| 411 | |
---|
| 412 | niter1 = niter1max |
---|
| 413 | niter2 = niter2max |
---|
| 414 | |
---|
| 415 | DO jit = 1, niter1 |
---|
| 416 | CALL p4z_sink2( wsbio3, sinking , jppoc, niter1 ) |
---|
| 417 | CALL p4z_sink2( wsbio3, sinkfer , jpsfe, niter1 ) |
---|
| 418 | CALL p4z_sink2( wscal , sinksil , jpgsi, niter1 ) |
---|
| 419 | CALL p4z_sink2( wscal , sinkcal , jpcal, niter1 ) |
---|
| 420 | END DO |
---|
| 421 | |
---|
| 422 | DO jit = 1, niter2 |
---|
| 423 | CALL p4z_sink2( wsbio4, sinking2, jpnum, niter2 ) |
---|
| 424 | END DO |
---|
| 425 | |
---|
| 426 | ! Exchange between organic matter compartments due to coagulation/disaggregation |
---|
| 427 | ! --------------------------------------------------- |
---|
| 428 | |
---|
| 429 | zval1 = 1. + xkr_zeta |
---|
| 430 | zval2 = 1. + xkr_eta |
---|
| 431 | zval3 = 3. + xkr_eta |
---|
| 432 | zval4 = 4. + xkr_eta |
---|
| 433 | |
---|
| 434 | DO jk = 1,jpkm1 |
---|
| 435 | DO jj = 1,jpj |
---|
| 436 | DO ji = 1,jpi |
---|
| 437 | IF( tmask(ji,jj,jk) /= 0.e0 ) THEN |
---|
| 438 | |
---|
[5602] | 439 | znum = trb(ji,jj,jk,jppoc)/(trb(ji,jj,jk,jpnum)+rtrn) / xkr_massp |
---|
[3443] | 440 | !-------------- To avoid sinking speed over 50 m/day ------- |
---|
| 441 | znum = min(xnumm(jk),znum) |
---|
| 442 | znum = MAX( 1.1,znum) |
---|
| 443 | !------------------------------------------------------------ |
---|
| 444 | zeps = ( zval1 * znum - 1.) / ( znum - 1.) |
---|
| 445 | zdiv = MAX( 1.e-4, ABS( zeps - zval3) ) * SIGN( 1., zeps - zval3 ) |
---|
| 446 | zdiv1 = MAX( 1.e-4, ABS( zeps - 4. ) ) * SIGN( 1., zeps - 4. ) |
---|
| 447 | zdiv2 = zeps - 2. |
---|
| 448 | zdiv3 = zeps - 3. |
---|
| 449 | zdiv4 = zeps - zval2 |
---|
| 450 | zdiv5 = 2.* zeps - zval4 |
---|
| 451 | zfm = xkr_frac**( 1.- zeps ) |
---|
| 452 | zsm = xkr_frac**xkr_eta |
---|
| 453 | |
---|
| 454 | ! Part I : Coagulation dependant on turbulence |
---|
| 455 | ! ---------------------------------------------- |
---|
| 456 | |
---|
[5602] | 457 | zagg1 = 0.163 * trb(ji,jj,jk,jpnum)**2 & |
---|
[3443] | 458 | & * 2.*( (zfm-1.)*(zfm*xkr_mass_max**3-xkr_mass_min**3) & |
---|
| 459 | & * (zeps-1)/zdiv1 + 3.*(zfm*xkr_mass_max-xkr_mass_min) & |
---|
| 460 | & * (zfm*xkr_mass_max**2-xkr_mass_min**2) & |
---|
| 461 | & * (zeps-1.)**2/(zdiv2*zdiv3)) |
---|
[5602] | 462 | zagg2 = 2*0.163*trb(ji,jj,jk,jpnum)**2*zfm* & |
---|
[3443] | 463 | & ((xkr_mass_max**3+3.*(xkr_mass_max**2 & |
---|
| 464 | & *xkr_mass_min*(zeps-1.)/zdiv2 & |
---|
| 465 | & +xkr_mass_max*xkr_mass_min**2*(zeps-1.)/zdiv3) & |
---|
| 466 | & +xkr_mass_min**3*(zeps-1)/zdiv1) & |
---|
| 467 | & -zfm*xkr_mass_max**3*(1.+3.*((zeps-1.)/ & |
---|
| 468 | & (zeps-2.)+(zeps-1.)/zdiv3)+(zeps-1.)/zdiv1)) |
---|
| 469 | |
---|
[5602] | 470 | zagg3 = 0.163*trb(ji,jj,jk,jpnum)**2*zfm**2*8. * xkr_mass_max**3 |
---|
[3443] | 471 | |
---|
| 472 | ! Aggregation of small into large particles |
---|
| 473 | ! Part II : Differential settling |
---|
| 474 | ! ---------------------------------------------- |
---|
| 475 | |
---|
[5602] | 476 | zagg4 = 2.*3.141*0.125*trb(ji,jj,jk,jpnum)**2* & |
---|
[3443] | 477 | & xkr_wsbio_min*(zeps-1.)**2 & |
---|
| 478 | & *(xkr_mass_min**2*((1.-zsm*zfm)/(zdiv3*zdiv4) & |
---|
| 479 | & -(1.-zfm)/(zdiv*(zeps-1.)))- & |
---|
| 480 | & ((zfm*zfm*xkr_mass_max**2*zsm-xkr_mass_min**2) & |
---|
| 481 | & *xkr_eta)/(zdiv*zdiv3*zdiv5) ) |
---|
| 482 | |
---|
[5602] | 483 | zagg5 = 2.*3.141*0.125*trb(ji,jj,jk,jpnum)**2 & |
---|
[3443] | 484 | & *(zeps-1.)*zfm*xkr_wsbio_min & |
---|
| 485 | & *(zsm*(xkr_mass_min**2-zfm*xkr_mass_max**2) & |
---|
| 486 | & /zdiv3-(xkr_mass_min**2-zfm*zsm*xkr_mass_max**2) & |
---|
| 487 | & /zdiv) |
---|
| 488 | |
---|
| 489 | ! |
---|
| 490 | ! Fractionnation by swimming organisms |
---|
| 491 | ! ------------------------------------ |
---|
| 492 | |
---|
[5602] | 493 | zfract = 2.*3.141*0.125*trb(ji,jj,jk,jpmes)*12./0.12/0.06**3*trb(ji,jj,jk,jpnum) & |
---|
[3443] | 494 | & * (0.01/xkr_mass_min)**(1.-zeps)*0.1**2 & |
---|
| 495 | & * 10000.*xstep |
---|
| 496 | |
---|
| 497 | ! Aggregation of DOC to small particles |
---|
| 498 | ! -------------------------------------- |
---|
| 499 | |
---|
[5602] | 500 | zaggdoc = 0.83 * trb(ji,jj,jk,jpdoc) * xstep * xdiss(ji,jj,jk) * trb(ji,jj,jk,jpdoc) & |
---|
| 501 | & + 0.005 * 231. * trb(ji,jj,jk,jpdoc) * xstep * trb(ji,jj,jk,jpdoc) |
---|
| 502 | zaggdoc1 = 271. * trb(ji,jj,jk,jppoc) * xstep * xdiss(ji,jj,jk) * trb(ji,jj,jk,jpdoc) & |
---|
| 503 | & + 0.02 * 16706. * trb(ji,jj,jk,jppoc) * xstep * trb(ji,jj,jk,jpdoc) |
---|
[3443] | 504 | |
---|
| 505 | # if defined key_degrad |
---|
| 506 | zagg1 = zagg1 * facvol(ji,jj,jk) |
---|
| 507 | zagg2 = zagg2 * facvol(ji,jj,jk) |
---|
| 508 | zagg3 = zagg3 * facvol(ji,jj,jk) |
---|
| 509 | zagg4 = zagg4 * facvol(ji,jj,jk) |
---|
| 510 | zagg5 = zagg5 * facvol(ji,jj,jk) |
---|
| 511 | zaggdoc = zaggdoc * facvol(ji,jj,jk) |
---|
| 512 | zaggdoc1 = zaggdoc1 * facvol(ji,jj,jk) |
---|
| 513 | # endif |
---|
| 514 | zaggsh = ( zagg1 + zagg2 + zagg3 ) * rfact2 * xdiss(ji,jj,jk) / 1000. |
---|
| 515 | zaggsi = ( zagg4 + zagg5 ) * xstep / 10. |
---|
| 516 | zagg = 0.5 * xkr_stick * ( zaggsh + zaggsi ) |
---|
| 517 | ! |
---|
[5602] | 518 | znumdoc = trb(ji,jj,jk,jpnum) / ( trb(ji,jj,jk,jppoc) + rtrn ) |
---|
[3443] | 519 | tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zaggdoc + zaggdoc1 |
---|
| 520 | tra(ji,jj,jk,jpnum) = tra(ji,jj,jk,jpnum) + zfract + zaggdoc / xkr_massp - zagg |
---|
| 521 | tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) - zaggdoc - zaggdoc1 |
---|
| 522 | |
---|
| 523 | ENDIF |
---|
| 524 | END DO |
---|
| 525 | END DO |
---|
| 526 | END DO |
---|
| 527 | |
---|
[3481] | 528 | ! Total primary production per year |
---|
[4996] | 529 | t_oce_co2_exp = t_oce_co2_exp + glob_sum( ( sinking(:,:,ik100) * e1e2t(:,:) * tmask(:,:,1) ) |
---|
[3481] | 530 | ! |
---|
[4996] | 531 | IF( lk_iomput ) THEN |
---|
[5602] | 532 | IF( knt == nrdttrc ) THEN |
---|
[4996] | 533 | CALL wrk_alloc( jpi, jpj, zw2d ) |
---|
| 534 | CALL wrk_alloc( jpi, jpj, jpk, zw3d ) |
---|
| 535 | zfact = 1.e+3 * rfact2r ! conversion from mol/l/kt to mol/m3/s |
---|
| 536 | ! |
---|
| 537 | IF( iom_use( "EPC100" ) ) THEN |
---|
| 538 | zw2d(:,:) = sinking(:,:,ik100) * zfact * tmask(:,:,1) ! Export of carbon at 100m |
---|
| 539 | CALL iom_put( "EPC100" , zw2d ) |
---|
| 540 | ENDIF |
---|
| 541 | IF( iom_use( "EPN100" ) ) THEN |
---|
| 542 | zw2d(:,:) = sinking2(:,:,ik100) * zfact * tmask(:,:,1) ! Export of number of aggregates ? |
---|
| 543 | CALL iom_put( "EPN100" , zw2d ) |
---|
| 544 | ENDIF |
---|
| 545 | IF( iom_use( "EPCAL100" ) ) THEN |
---|
| 546 | zw2d(:,:) = sinkcal(:,:,ik100) * zfact * tmask(:,:,1) ! Export of calcite at 100m |
---|
| 547 | CALL iom_put( "EPCAL100" , zw2d ) |
---|
| 548 | ENDIF |
---|
| 549 | IF( iom_use( "EPSI100" ) ) THEN |
---|
| 550 | zw2d(:,:) = sinksil(:,:,ik100) * zfact * tmask(:,:,1) ! Export of bigenic silica at 100m |
---|
| 551 | CALL iom_put( "EPSI100" , zw2d ) |
---|
| 552 | ENDIF |
---|
| 553 | IF( iom_use( "EXPC" ) ) THEN |
---|
| 554 | zw3d(:,:,:) = sinking(:,:,:) * zfact * tmask(:,:,:) ! Export of carbon in the water column |
---|
| 555 | CALL iom_put( "EXPC" , zw3d ) |
---|
| 556 | ENDIF |
---|
| 557 | IF( iom_use( "EXPN" ) ) THEN |
---|
| 558 | zw3d(:,:,:) = sinking(:,:,:) * zfact * tmask(:,:,:) ! Export of carbon in the water column |
---|
| 559 | CALL iom_put( "EXPN" , zw3d ) |
---|
| 560 | ENDIF |
---|
| 561 | IF( iom_use( "EXPCAL" ) ) THEN |
---|
| 562 | zw3d(:,:,:) = sinkcal(:,:,:) * zfact * tmask(:,:,:) ! Export of calcite |
---|
| 563 | CALL iom_put( "EXPCAL" , zw3d ) |
---|
| 564 | ENDIF |
---|
| 565 | IF( iom_use( "EXPSI" ) ) THEN |
---|
| 566 | zw3d(:,:,:) = sinksil(:,:,:) * zfact * tmask(:,:,:) ! Export of bigenic silica |
---|
| 567 | CALL iom_put( "EXPSI" , zw3d ) |
---|
| 568 | ENDIF |
---|
| 569 | IF( iom_use( "XNUM" ) ) THEN |
---|
| 570 | zw3d(:,:,:) = znum3d(:,:,:) * tmask(:,:,:) ! Number of particles on aggregats |
---|
| 571 | CALL iom_put( "XNUM" , zw3d ) |
---|
| 572 | ENDIF |
---|
| 573 | IF( iom_use( "WSC" ) ) THEN |
---|
| 574 | zw3d(:,:,:) = wsbio3(:,:,:) * tmask(:,:,:) ! Sinking speed of carbon particles |
---|
| 575 | CALL iom_put( "WSC" , zw3d ) |
---|
| 576 | ENDIF |
---|
| 577 | IF( iom_use( "WSN" ) ) THEN |
---|
| 578 | zw3d(:,:,:) = wsbio4(:,:,:) * tmask(:,:,:) ! Sinking speed of particles number |
---|
| 579 | CALL iom_put( "WSN" , zw3d ) |
---|
| 580 | ENDIF |
---|
| 581 | ! |
---|
| 582 | CALL wrk_dealloc( jpi, jpj, zw2d ) |
---|
| 583 | CALL wrk_dealloc( jpi, jpj, jpk, zw3d ) |
---|
| 584 | ELSE |
---|
| 585 | IF( ln_diatrc ) THEN |
---|
| 586 | zfact = 1.e3 * rfact2r |
---|
| 587 | trc2d(:,: ,jp_pcs0_2d + 4) = sinking (:,:,ik100) * zfact * tmask(:,:,1) |
---|
| 588 | trc2d(:,: ,jp_pcs0_2d + 5) = sinking2(:,:,ik100) * zfact * tmask(:,:,1) |
---|
| 589 | trc2d(:,: ,jp_pcs0_2d + 6) = sinkfer (:,:,ik100) * zfact * tmask(:,:,1) |
---|
| 590 | trc2d(:,: ,jp_pcs0_2d + 7) = sinksil (:,:,ik100) * zfact * tmask(:,:,1) |
---|
| 591 | trc2d(:,: ,jp_pcs0_2d + 8) = sinkcal (:,:,ik100) * zfact * tmask(:,:,1) |
---|
| 592 | trc3d(:,:,:,jp_pcs0_3d + 11) = sinking (:,:,:) * zfact * tmask(:,:,:) |
---|
| 593 | trc3d(:,:,:,jp_pcs0_3d + 12) = sinking2(:,:,:) * zfact * tmask(:,:,:) |
---|
| 594 | trc3d(:,:,:,jp_pcs0_3d + 13) = sinksil (:,:,:) * zfact * tmask(:,:,:) |
---|
| 595 | trc3d(:,:,:,jp_pcs0_3d + 14) = sinkcal (:,:,:) * zfact * tmask(:,:,:) |
---|
| 596 | trc3d(:,:,:,jp_pcs0_3d + 15) = znum3d (:,:,:) * tmask(:,:,:) |
---|
| 597 | trc3d(:,:,:,jp_pcs0_3d + 16) = wsbio3 (:,:,:) * tmask(:,:,:) |
---|
| 598 | trc3d(:,:,:,jp_pcs0_3d + 17) = wsbio4 (:,:,:) * tmask(:,:,:) |
---|
[3443] | 599 | ENDIF |
---|
| 600 | ENDIF |
---|
[4996] | 601 | |
---|
[3443] | 602 | ! |
---|
| 603 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
---|
| 604 | WRITE(charout, FMT="('sink')") |
---|
| 605 | CALL prt_ctl_trc_info(charout) |
---|
| 606 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
---|
| 607 | ENDIF |
---|
| 608 | ! |
---|
| 609 | CALL wrk_dealloc( jpi, jpj, jpk, znum3d ) |
---|
| 610 | ! |
---|
| 611 | IF( nn_timing == 1 ) CALL timing_stop('p4z_sink') |
---|
| 612 | ! |
---|
| 613 | END SUBROUTINE p4z_sink |
---|
| 614 | |
---|
| 615 | |
---|
| 616 | SUBROUTINE p4z_sink_init |
---|
| 617 | !!---------------------------------------------------------------------- |
---|
| 618 | !! *** ROUTINE p4z_sink_init *** |
---|
| 619 | !! |
---|
| 620 | !! ** Purpose : Initialization of sinking parameters |
---|
| 621 | !! Kriest parameterization only |
---|
| 622 | !! |
---|
| 623 | !! ** Method : Read the nampiskrs namelist and check the parameters |
---|
| 624 | !! called at the first timestep |
---|
| 625 | !! |
---|
| 626 | !! ** input : Namelist nampiskrs |
---|
| 627 | !!---------------------------------------------------------------------- |
---|
| 628 | INTEGER :: jk, jn, kiter |
---|
[4147] | 629 | INTEGER :: ios ! Local integer output status for namelist read |
---|
[3443] | 630 | REAL(wp) :: znum, zdiv |
---|
| 631 | REAL(wp) :: zws, zwr, zwl,wmax, znummax |
---|
| 632 | REAL(wp) :: zmin, zmax, zl, zr, xacc |
---|
| 633 | ! |
---|
| 634 | NAMELIST/nampiskrs/ xkr_sfact, xkr_stick , & |
---|
| 635 | & xkr_nnano, xkr_ndiat, xkr_nmicro, xkr_nmeso, xkr_naggr |
---|
| 636 | !!---------------------------------------------------------------------- |
---|
| 637 | ! |
---|
| 638 | IF( nn_timing == 1 ) CALL timing_start('p4z_sink_init') |
---|
| 639 | ! |
---|
| 640 | |
---|
[4147] | 641 | REWIND( numnatp_ref ) ! Namelist nampiskrs in reference namelist : Pisces sinking Kriest |
---|
| 642 | READ ( numnatp_ref, nampiskrs, IOSTAT = ios, ERR = 901) |
---|
| 643 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampiskrs in reference namelist', lwp ) |
---|
| 644 | |
---|
| 645 | REWIND( numnatp_cfg ) ! Namelist nampiskrs in configuration namelist : Pisces sinking Kriest |
---|
| 646 | READ ( numnatp_cfg, nampiskrs, IOSTAT = ios, ERR = 902 ) |
---|
| 647 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampiskrs in configuration namelist', lwp ) |
---|
[4624] | 648 | IF(lwm) WRITE ( numonp, nampiskrs ) |
---|
[4147] | 649 | |
---|
[3443] | 650 | IF(lwp) THEN |
---|
| 651 | WRITE(numout,*) |
---|
| 652 | WRITE(numout,*) ' Namelist : nampiskrs' |
---|
| 653 | WRITE(numout,*) ' Sinking factor xkr_sfact = ', xkr_sfact |
---|
| 654 | WRITE(numout,*) ' Stickiness xkr_stick = ', xkr_stick |
---|
| 655 | WRITE(numout,*) ' Nbr of cell in nano size class xkr_nnano = ', xkr_nnano |
---|
| 656 | WRITE(numout,*) ' Nbr of cell in diatoms size class xkr_ndiat = ', xkr_ndiat |
---|
| 657 | WRITE(numout,*) ' Nbr of cell in microzoo size class xkr_nmicro = ', xkr_nmicro |
---|
| 658 | WRITE(numout,*) ' Nbr of cell in mesozoo size class xkr_nmeso = ', xkr_nmeso |
---|
| 659 | WRITE(numout,*) ' Nbr of cell in aggregates size class xkr_naggr = ', xkr_naggr |
---|
| 660 | ENDIF |
---|
| 661 | |
---|
| 662 | |
---|
| 663 | ! max and min vertical particle speed |
---|
| 664 | xkr_wsbio_min = xkr_sfact * xkr_mass_min**xkr_eta |
---|
| 665 | xkr_wsbio_max = xkr_sfact * xkr_mass_max**xkr_eta |
---|
| 666 | IF (lwp) WRITE(numout,*) ' max and min vertical particle speed ', xkr_wsbio_min, xkr_wsbio_max |
---|
| 667 | |
---|
| 668 | ! |
---|
| 669 | ! effect of the sizes of the different living pools on particle numbers |
---|
| 670 | ! nano = 2um-20um -> mean size=6.32 um -> ws=2.596 -> xnum=xnnano=2.337 |
---|
| 671 | ! diat and microzoo = 10um-200um -> 44.7 -> 8.732 -> xnum=xndiat=3.718 |
---|
| 672 | ! mesozoo = 200um-2mm -> 632.45 -> 45.14 -> xnum=xnmeso=7.147 |
---|
| 673 | ! aggregates = 200um-10mm -> 1414 -> 74.34 -> xnum=xnaggr=9.877 |
---|
| 674 | ! doc aggregates = 1um |
---|
| 675 | ! ---------------------------------------------------------- |
---|
| 676 | |
---|
| 677 | xkr_dnano = 1. / ( xkr_massp * xkr_nnano ) |
---|
| 678 | xkr_ddiat = 1. / ( xkr_massp * xkr_ndiat ) |
---|
| 679 | xkr_dmicro = 1. / ( xkr_massp * xkr_nmicro ) |
---|
| 680 | xkr_dmeso = 1. / ( xkr_massp * xkr_nmeso ) |
---|
| 681 | xkr_daggr = 1. / ( xkr_massp * xkr_naggr ) |
---|
| 682 | |
---|
| 683 | !!--------------------------------------------------------------------- |
---|
| 684 | !! 'key_kriest' ??? |
---|
| 685 | !!--------------------------------------------------------------------- |
---|
| 686 | ! COMPUTATION OF THE VERTICAL PROFILE OF MAXIMUM SINKING SPEED |
---|
| 687 | ! Search of the maximum number of particles in aggregates for each k-level. |
---|
| 688 | ! Bissection Method |
---|
| 689 | !-------------------------------------------------------------------- |
---|
| 690 | IF (lwp) THEN |
---|
| 691 | WRITE(numout,*) |
---|
| 692 | WRITE(numout,*)' kriest : Compute maximum number of particles in aggregates' |
---|
| 693 | ENDIF |
---|
| 694 | |
---|
| 695 | xacc = 0.001_wp |
---|
| 696 | kiter = 50 |
---|
| 697 | zmin = 1.10_wp |
---|
| 698 | zmax = xkr_mass_max / xkr_mass_min |
---|
| 699 | xkr_frac = zmax |
---|
| 700 | |
---|
| 701 | DO jk = 1,jpk |
---|
| 702 | zl = zmin |
---|
| 703 | zr = zmax |
---|
| 704 | wmax = 0.5 * fse3t(1,1,jk) * rday * float(niter1max) / rfact2 |
---|
| 705 | zdiv = xkr_zeta + xkr_eta - xkr_eta * zl |
---|
| 706 | znum = zl - 1. |
---|
| 707 | zwl = xkr_wsbio_min * xkr_zeta / zdiv & |
---|
| 708 | & - ( xkr_wsbio_max * xkr_eta * znum * & |
---|
| 709 | & xkr_frac**( -xkr_zeta / znum ) / zdiv ) & |
---|
| 710 | & - wmax |
---|
| 711 | |
---|
| 712 | zdiv = xkr_zeta + xkr_eta - xkr_eta * zr |
---|
| 713 | znum = zr - 1. |
---|
| 714 | zwr = xkr_wsbio_min * xkr_zeta / zdiv & |
---|
| 715 | & - ( xkr_wsbio_max * xkr_eta * znum * & |
---|
| 716 | & xkr_frac**( -xkr_zeta / znum ) / zdiv ) & |
---|
| 717 | & - wmax |
---|
| 718 | iflag: DO jn = 1, kiter |
---|
| 719 | IF ( zwl == 0._wp ) THEN ; znummax = zl |
---|
| 720 | ELSEIF( zwr == 0._wp ) THEN ; znummax = zr |
---|
| 721 | ELSE |
---|
| 722 | znummax = ( zr + zl ) / 2. |
---|
| 723 | zdiv = xkr_zeta + xkr_eta - xkr_eta * znummax |
---|
| 724 | znum = znummax - 1. |
---|
| 725 | zws = xkr_wsbio_min * xkr_zeta / zdiv & |
---|
| 726 | & - ( xkr_wsbio_max * xkr_eta * znum * & |
---|
| 727 | & xkr_frac**( -xkr_zeta / znum ) / zdiv ) & |
---|
| 728 | & - wmax |
---|
| 729 | IF( zws * zwl < 0. ) THEN ; zr = znummax |
---|
| 730 | ELSE ; zl = znummax |
---|
| 731 | ENDIF |
---|
| 732 | zdiv = xkr_zeta + xkr_eta - xkr_eta * zl |
---|
| 733 | znum = zl - 1. |
---|
| 734 | zwl = xkr_wsbio_min * xkr_zeta / zdiv & |
---|
| 735 | & - ( xkr_wsbio_max * xkr_eta * znum * & |
---|
| 736 | & xkr_frac**( -xkr_zeta / znum ) / zdiv ) & |
---|
| 737 | & - wmax |
---|
| 738 | |
---|
| 739 | zdiv = xkr_zeta + xkr_eta - xkr_eta * zr |
---|
| 740 | znum = zr - 1. |
---|
| 741 | zwr = xkr_wsbio_min * xkr_zeta / zdiv & |
---|
| 742 | & - ( xkr_wsbio_max * xkr_eta * znum * & |
---|
| 743 | & xkr_frac**( -xkr_zeta / znum ) / zdiv ) & |
---|
| 744 | & - wmax |
---|
| 745 | ! |
---|
| 746 | IF ( ABS ( zws ) <= xacc ) EXIT iflag |
---|
| 747 | ! |
---|
| 748 | ENDIF |
---|
| 749 | ! |
---|
| 750 | END DO iflag |
---|
| 751 | |
---|
| 752 | xnumm(jk) = znummax |
---|
| 753 | IF (lwp) WRITE(numout,*) ' jk = ', jk, ' wmax = ', wmax,' xnum max = ', xnumm(jk) |
---|
| 754 | ! |
---|
| 755 | END DO |
---|
| 756 | ! |
---|
[4996] | 757 | ik100 = 10 ! last level where depth less than 100 m |
---|
| 758 | DO jk = jpkm1, 1, -1 |
---|
| 759 | IF( gdept_1d(jk) > 100. ) iksed = jk - 1 |
---|
| 760 | END DO |
---|
| 761 | IF (lwp) WRITE(numout,*) |
---|
| 762 | IF (lwp) WRITE(numout,*) ' Level corresponding to 100m depth ', ik100 + 1 |
---|
| 763 | IF (lwp) WRITE(numout,*) |
---|
| 764 | ! |
---|
[3481] | 765 | t_oce_co2_exp = 0._wp |
---|
| 766 | ! |
---|
[3443] | 767 | IF( nn_timing == 1 ) CALL timing_stop('p4z_sink_init') |
---|
| 768 | ! |
---|
| 769 | END SUBROUTINE p4z_sink_init |
---|
| 770 | |
---|
| 771 | #endif |
---|
| 772 | |
---|
| 773 | SUBROUTINE p4z_sink2( pwsink, psinkflx, jp_tra, kiter ) |
---|
| 774 | !!--------------------------------------------------------------------- |
---|
| 775 | !! *** ROUTINE p4z_sink2 *** |
---|
| 776 | !! |
---|
| 777 | !! ** Purpose : Compute the sedimentation terms for the various sinking |
---|
| 778 | !! particles. The scheme used to compute the trends is based |
---|
| 779 | !! on MUSCL. |
---|
| 780 | !! |
---|
| 781 | !! ** Method : - this ROUTINE compute not exactly the advection but the |
---|
| 782 | !! transport term, i.e. div(u*tra). |
---|
| 783 | !!--------------------------------------------------------------------- |
---|
| 784 | ! |
---|
| 785 | INTEGER , INTENT(in ) :: jp_tra ! tracer index index |
---|
| 786 | INTEGER , INTENT(in ) :: kiter ! number of iterations for time-splitting |
---|
| 787 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj,jpk) :: pwsink ! sinking speed |
---|
| 788 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj,jpk) :: psinkflx ! sinking fluxe |
---|
| 789 | !! |
---|
| 790 | INTEGER :: ji, jj, jk, jn |
---|
| 791 | REAL(wp) :: zigma,zew,zign, zflx, zstep |
---|
[3494] | 792 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ztraz, zakz, zwsink2, ztrb |
---|
[3443] | 793 | !!--------------------------------------------------------------------- |
---|
| 794 | ! |
---|
| 795 | IF( nn_timing == 1 ) CALL timing_start('p4z_sink2') |
---|
| 796 | ! |
---|
| 797 | ! Allocate temporary workspace |
---|
[3494] | 798 | CALL wrk_alloc( jpi, jpj, jpk, ztraz, zakz, zwsink2, ztrb ) |
---|
[3443] | 799 | |
---|
| 800 | zstep = rfact2 / FLOAT( kiter ) / 2. |
---|
| 801 | |
---|
| 802 | ztraz(:,:,:) = 0.e0 |
---|
| 803 | zakz (:,:,:) = 0.e0 |
---|
[5602] | 804 | ztrb (:,:,:) = trb(:,:,:,jp_tra) |
---|
[3443] | 805 | |
---|
| 806 | DO jk = 1, jpkm1 |
---|
| 807 | zwsink2(:,:,jk+1) = -pwsink(:,:,jk) / rday * tmask(:,:,jk+1) |
---|
| 808 | END DO |
---|
| 809 | zwsink2(:,:,1) = 0.e0 |
---|
| 810 | IF( lk_degrad ) THEN |
---|
| 811 | zwsink2(:,:,:) = zwsink2(:,:,:) * facvol(:,:,:) |
---|
| 812 | ENDIF |
---|
| 813 | |
---|
| 814 | |
---|
| 815 | ! Vertical advective flux |
---|
| 816 | DO jn = 1, 2 |
---|
| 817 | ! first guess of the slopes interior values |
---|
| 818 | DO jk = 2, jpkm1 |
---|
[5602] | 819 | ztraz(:,:,jk) = ( trb(:,:,jk-1,jp_tra) - trb(:,:,jk,jp_tra) ) * tmask(:,:,jk) |
---|
[3443] | 820 | END DO |
---|
| 821 | ztraz(:,:,1 ) = 0.0 |
---|
| 822 | ztraz(:,:,jpk) = 0.0 |
---|
| 823 | |
---|
| 824 | ! slopes |
---|
| 825 | DO jk = 2, jpkm1 |
---|
| 826 | DO jj = 1,jpj |
---|
| 827 | DO ji = 1, jpi |
---|
| 828 | zign = 0.25 + SIGN( 0.25, ztraz(ji,jj,jk) * ztraz(ji,jj,jk+1) ) |
---|
| 829 | zakz(ji,jj,jk) = ( ztraz(ji,jj,jk) + ztraz(ji,jj,jk+1) ) * zign |
---|
| 830 | END DO |
---|
| 831 | END DO |
---|
| 832 | END DO |
---|
| 833 | |
---|
| 834 | ! Slopes limitation |
---|
| 835 | DO jk = 2, jpkm1 |
---|
| 836 | DO jj = 1, jpj |
---|
| 837 | DO ji = 1, jpi |
---|
| 838 | zakz(ji,jj,jk) = SIGN( 1., zakz(ji,jj,jk) ) * & |
---|
| 839 | & MIN( ABS( zakz(ji,jj,jk) ), 2. * ABS(ztraz(ji,jj,jk+1)), 2. * ABS(ztraz(ji,jj,jk) ) ) |
---|
| 840 | END DO |
---|
| 841 | END DO |
---|
| 842 | END DO |
---|
| 843 | |
---|
| 844 | ! vertical advective flux |
---|
| 845 | DO jk = 1, jpkm1 |
---|
| 846 | DO jj = 1, jpj |
---|
| 847 | DO ji = 1, jpi |
---|
[7398] | 848 | #if defined key_crs |
---|
| 849 | zigma = zwsink2(ji,jj,jk+1) * zstep / e3w_max_crs(ji,jj,jk+1) |
---|
| 850 | #else |
---|
[3443] | 851 | zigma = zwsink2(ji,jj,jk+1) * zstep / fse3w(ji,jj,jk+1) |
---|
[7398] | 852 | #endif |
---|
[3443] | 853 | zew = zwsink2(ji,jj,jk+1) |
---|
[5602] | 854 | psinkflx(ji,jj,jk+1) = -zew * ( trb(ji,jj,jk,jp_tra) - 0.5 * ( 1 + zigma ) * zakz(ji,jj,jk) ) * zstep |
---|
[3443] | 855 | END DO |
---|
| 856 | END DO |
---|
| 857 | END DO |
---|
| 858 | ! |
---|
| 859 | ! Boundary conditions |
---|
| 860 | psinkflx(:,:,1 ) = 0.e0 |
---|
| 861 | psinkflx(:,:,jpk) = 0.e0 |
---|
| 862 | |
---|
| 863 | DO jk=1,jpkm1 |
---|
| 864 | DO jj = 1,jpj |
---|
| 865 | DO ji = 1, jpi |
---|
[7520] | 866 | #if defined key_crs |
---|
| 867 | zflx = ( psinkflx(ji,jj,jk) - psinkflx(ji,jj,jk+1) ) / e3t_max_crs(ji,jj,jk) |
---|
| 868 | #else |
---|
[3443] | 869 | zflx = ( psinkflx(ji,jj,jk) - psinkflx(ji,jj,jk+1) ) / fse3t(ji,jj,jk) |
---|
[7520] | 870 | #endif |
---|
[5602] | 871 | trb(ji,jj,jk,jp_tra) = trb(ji,jj,jk,jp_tra) + zflx |
---|
[3443] | 872 | END DO |
---|
| 873 | END DO |
---|
| 874 | END DO |
---|
| 875 | |
---|
| 876 | ENDDO |
---|
| 877 | |
---|
[3494] | 878 | DO jk = 1,jpkm1 |
---|
[3443] | 879 | DO jj = 1,jpj |
---|
| 880 | DO ji = 1, jpi |
---|
[7520] | 881 | #if defined key_crs |
---|
| 882 | zflx = ( psinkflx(ji,jj,jk) - psinkflx(ji,jj,jk+1) ) / e3t_max_crs(ji,jj,jk) |
---|
| 883 | #else |
---|
[3443] | 884 | zflx = ( psinkflx(ji,jj,jk) - psinkflx(ji,jj,jk+1) ) / fse3t(ji,jj,jk) |
---|
[7520] | 885 | #endif |
---|
[3494] | 886 | ztrb(ji,jj,jk) = ztrb(ji,jj,jk) + 2. * zflx |
---|
[3443] | 887 | END DO |
---|
| 888 | END DO |
---|
| 889 | END DO |
---|
| 890 | |
---|
[5602] | 891 | trb(:,:,:,jp_tra) = ztrb(:,:,:) |
---|
[3494] | 892 | psinkflx(:,:,:) = 2. * psinkflx(:,:,:) |
---|
[3443] | 893 | ! |
---|
[3494] | 894 | CALL wrk_dealloc( jpi, jpj, jpk, ztraz, zakz, zwsink2, ztrb ) |
---|
[3443] | 895 | ! |
---|
| 896 | IF( nn_timing == 1 ) CALL timing_stop('p4z_sink2') |
---|
| 897 | ! |
---|
| 898 | END SUBROUTINE p4z_sink2 |
---|
| 899 | |
---|
| 900 | |
---|
| 901 | INTEGER FUNCTION p4z_sink_alloc() |
---|
| 902 | !!---------------------------------------------------------------------- |
---|
| 903 | !! *** ROUTINE p4z_sink_alloc *** |
---|
| 904 | !!---------------------------------------------------------------------- |
---|
| 905 | ALLOCATE( wsbio3 (jpi,jpj,jpk) , wsbio4 (jpi,jpj,jpk) , wscal(jpi,jpj,jpk) , & |
---|
| 906 | & sinking(jpi,jpj,jpk) , sinking2(jpi,jpj,jpk) , & |
---|
| 907 | & sinkcal(jpi,jpj,jpk) , sinksil (jpi,jpj,jpk) , & |
---|
| 908 | #if defined key_kriest |
---|
| 909 | & xnumm(jpk) , & |
---|
| 910 | #else |
---|
| 911 | & sinkfer2(jpi,jpj,jpk) , & |
---|
| 912 | #endif |
---|
| 913 | & sinkfer(jpi,jpj,jpk) , STAT=p4z_sink_alloc ) |
---|
| 914 | ! |
---|
| 915 | IF( p4z_sink_alloc /= 0 ) CALL ctl_warn('p4z_sink_alloc : failed to allocate arrays.') |
---|
| 916 | ! |
---|
| 917 | END FUNCTION p4z_sink_alloc |
---|
| 918 | |
---|
| 919 | #else |
---|
| 920 | !!====================================================================== |
---|
| 921 | !! Dummy module : No PISCES bio-model |
---|
| 922 | !!====================================================================== |
---|
| 923 | CONTAINS |
---|
| 924 | SUBROUTINE p4z_sink ! Empty routine |
---|
| 925 | END SUBROUTINE p4z_sink |
---|
| 926 | #endif |
---|
| 927 | |
---|
| 928 | !!====================================================================== |
---|
[7256] | 929 | END MODULE p4zsink |
---|