MODULE p2zexp !!====================================================================== !! *** MODULE p2zsed *** !! TOP : LOBSTER Compute loss of organic matter in the sediments !!====================================================================== !! History : - ! 1999 (O. Aumont, C. Le Quere) original code !! - ! 2001-05 (O. Aumont, E. Kestenare) add sediment computations !! 1.0 ! 2005-06 (A.-S. Kremeur) new temporal integration for sedpoc !! 2.0 ! 2007-12 (C. Deltel, G. Madec) F90 !! 3.5 ! 2012-03 (C. Ethe) Merge PISCES-LOBSTER !!---------------------------------------------------------------------- #if defined key_pisces_reduced !!---------------------------------------------------------------------- !! 'key_pisces_reduced' LOBSTER bio-model !!---------------------------------------------------------------------- !! p2z_exp : Compute loss of organic matter in the sediments !!---------------------------------------------------------------------- USE oce_trc ! USE trc USE sms_pisces USE p2zsed USE lbclnk USE prtctl_trc ! Print control for debbuging USE trd_oce USE trdtrc USE iom IMPLICIT NONE PRIVATE PUBLIC p2z_exp PUBLIC p2z_exp_init PUBLIC p2z_exp_alloc ! REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: dminl !: fraction of sinking POC released in sediments REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: dmin3 !: fraction of sinking POC released at each level REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: sedpocb !: mass of POC in sediments REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: sedpocn !: mass of POC in sediments REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: cmask !: Coastal mask area REAL(wp) :: areacot !: surface coastal area !!* Substitution # include "top_substitute.h90" !!---------------------------------------------------------------------- !! NEMO/TOP 3.3 , NEMO Consortium (2010) !! $Id$ !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE p2z_exp( kt ) !!--------------------------------------------------------------------- !! *** ROUTINE p2z_exp *** !! !! ** Purpose : MODELS EXPORT OF BIOGENIC MATTER (POC ''SOFT !! TISSUE'') AND ITS DISTRIBUTION IN WATER COLUMN !! !! ** Method : - IN THE SURFACE LAYER POC IS PRODUCED ACCORDING TO !! NURTRIENTS AVAILABLE AND GROWTH CONDITIONS. NUTRIENT UPTAKE !! KINETICS FOLLOW MICHAELIS-MENTON FORMULATION. !! THE TOTAL PARTICLE AMOUNT PRODUCED, IS DISTRIBUTED IN THE WATER !! COLUMN BELOW THE SURFACE LAYER. !!--------------------------------------------------------------------- !! INTEGER, INTENT( in ) :: kt ! ocean time-step index !! INTEGER :: ji, jj, jk, jl, ikt REAL(wp) :: zgeolpoc, zfact, zwork, ze3t, zsedpocd, zmaskt REAL(wp), POINTER, DIMENSION(:,:,:) :: ztrbio REAL(wp), POINTER, DIMENSION(:,:) :: zsedpoca CHARACTER (len=25) :: charout !!--------------------------------------------------------------------- ! IF( nn_timing == 1 ) CALL timing_start('p2z_exp') ! IF( kt == nittrc000 ) CALL p2z_exp_init CALL wrk_alloc( jpi, jpj, zsedpoca ) zsedpoca(:,:) = 0. IF( l_trdtrc ) THEN CALL wrk_alloc( jpi, jpj, jpk, ztrbio ) ! temporary save of trends ztrbio(:,:,:) = tra(:,:,:,jpno3) ENDIF ! VERTICAL DISTRIBUTION OF NEWLY PRODUCED BIOGENIC ! POC IN THE WATER COLUMN ! (PARTS OF NEWLY FORMED MATTER REMAINING IN THE DIFFERENT ! LAYERS IS DETERMINED BY DMIN3 DEFINED IN sms_p2z.F90 ! ---------------------------------------------------------------------- DO jk = 1, jpkm1 DO jj = 2, jpjm1 DO ji = fs_2, fs_jpim1 ze3t = 1. / fse3t(ji,jj,jk) tra(ji,jj,jk,jpno3) = tra(ji,jj,jk,jpno3) + ze3t * dmin3(ji,jj,jk) * xksi(ji,jj) END DO END DO END DO ! Find the last level of the water column ! Compute fluxes due to sinking particles (slow) zgeolpoc = 0.e0 ! Initialization ! Release of nutrients from the "simple" sediment DO jj = 2, jpjm1 DO ji = fs_2, fs_jpim1 ikt = mbkt(ji,jj) tra(ji,jj,ikt,jpno3) = tra(ji,jj,ikt,jpno3) + sedlam * sedpocn(ji,jj) / fse3t(ji,jj,ikt) ! Deposition of organic matter in the sediment zwork = vsed * trn(ji,jj,ikt,jpdet) zsedpoca(ji,jj) = ( zwork + dminl(ji,jj) * xksi(ji,jj) & & - sedlam * sedpocn(ji,jj) - sedlostpoc * sedpocn(ji,jj) ) * rdt zgeolpoc = zgeolpoc + sedlostpoc * sedpocn(ji,jj) * e1e2t(ji,jj) END DO END DO DO jj = 2, jpjm1 DO ji = fs_2, fs_jpim1 tra(ji,jj,1,jpno3) = tra(ji,jj,1,jpno3) + zgeolpoc * cmask(ji,jj) / areacot / fse3t(ji,jj,1) END DO END DO CALL lbc_lnk( sedpocn, 'T', 1. ) ! Oa & Ek: diagnostics depending on jpdia2d ! left as example IF( lk_iomput ) THEN CALL iom_put( "SEDPOC" , sedpocn ) ELSE IF( ln_diatrc ) trc2d(:,:,jp_pcs0_2d + 18) = sedpocn(:,:) ENDIF ! Time filter and swap of arrays ! ------------------------------ IF( neuler == 0 .AND. kt == nittrc000 ) THEN ! Euler time-stepping at first time-step ! ! (only swap) sedpocn(:,:) = zsedpoca(:,:) ! ELSE ! DO jj = 1, jpj DO ji = 1, jpi zsedpocd = zsedpoca(ji,jj) - 2. * sedpocn(ji,jj) + sedpocb(ji,jj) ! time laplacian on tracers sedpocb(ji,jj) = sedpocn(ji,jj) + atfp * zsedpocd ! sedpocb <-- filtered sedpocn sedpocn(ji,jj) = zsedpoca(ji,jj) ! sedpocn <-- sedpoca END DO END DO ! ENDIF ! IF( lrst_trc ) THEN IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) 'p2z_exp : POC in sediment fields written in ocean restart file ', & & 'at it= ', kt,' date= ', ndastp IF(lwp) WRITE(numout,*) '~~~~' CALL iom_rstput( kt, nitrst, numrtw, 'SEDB'//ctrcnm(jpdet), sedpocb(:,:) ) CALL iom_rstput( kt, nitrst, numrtw, 'SEDN'//ctrcnm(jpdet), sedpocn(:,:) ) ENDIF ! IF( l_trdtrc ) THEN ztrbio(:,:,:) = tra(:,:,:,jpno3) - ztrbio(:,:,:) jl = jp_pcs0_trd + 16 CALL trd_trc( ztrbio, jl, kt ) ! handle the trend CALL wrk_dealloc( jpi, jpj, jpk, ztrbio ) ! temporary save of trends ENDIF ! CALL wrk_dealloc( jpi, jpj, zsedpoca) ! temporary save of trends IF(ln_ctl) THEN ! print mean trends (used for debugging) WRITE(charout, FMT="('exp')") CALL prt_ctl_trc_info(charout) CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) ENDIF ! IF( nn_timing == 1 ) CALL timing_stop('p2z_exp') ! END SUBROUTINE p2z_exp SUBROUTINE p2z_exp_init !!---------------------------------------------------------------------- !! *** ROUTINE p4z_exp_init *** !! ** purpose : specific initialisation for export !!---------------------------------------------------------------------- INTEGER :: ji, jj, jk REAL(wp) :: zmaskt, zfluo, zfluu REAL(wp), POINTER, DIMENSION(:,: ) :: zrro REAL(wp), POINTER, DIMENSION(:,:,:) :: zdm0 !!--------------------------------------------------------------------- IF(lwp) THEN WRITE(numout,*) WRITE(numout,*) ' p2z_exp: LOBSTER export' WRITE(numout,*) ' ~~~~~~~' WRITE(numout,*) ' compute remineralisation-damping arrays for tracers' ENDIF ! ! Allocate temporary workspace CALL wrk_alloc( jpi, jpj, zrro ) CALL wrk_alloc( jpi, jpj, jpk, zdm0 ) ! Calculate vertical distribution of newly formed biogenic poc ! in the water column in the case of max. possible bottom depth ! ------------------------------------------------------------ zdm0 = 0._wp zrro = 1._wp DO jk = jpkb, jpkm1 DO jj = 1, jpj DO ji = 1, jpi zfluo = ( fsdepw(ji,jj,jk ) / fsdepw(ji,jj,jpkb) )**xhr zfluu = ( fsdepw(ji,jj,jk+1) / fsdepw(ji,jj,jpkb) )**xhr IF( zfluo.GT.1. ) zfluo = 1._wp zdm0(ji,jj,jk) = zfluo - zfluu IF( jk <= jpkb-1 ) zdm0(ji,jj,jk) = 0._wp zrro(ji,jj) = zrro(ji,jj) - zdm0(ji,jj,jk) END DO END DO END DO ! zdm0(:,:,jpk) = zrro(:,:) ! Calculate vertical distribution of newly formed biogenic poc ! in the water column with realistic topography (first "dry" layer ! contains total fraction, which has passed to the upper layers) ! ---------------------------------------------------------------------- dminl(:,:) = 0._wp dmin3(:,:,:) = zdm0 DO jk = 1, jpk DO jj = 1, jpj DO ji = 1, jpi IF( tmask(ji,jj,jk) == 0._wp ) THEN dminl(ji,jj) = dminl(ji,jj) + dmin3(ji,jj,jk) dmin3(ji,jj,jk) = 0._wp ENDIF END DO END DO END DO DO jj = 1, jpj DO ji = 1, jpi IF( tmask(ji,jj,1) == 0 ) dmin3(ji,jj,1) = 0._wp END DO END DO ! Coastal mask cmask(:,:) = 0._wp DO jj = 2, jpjm1 DO ji = fs_2, fs_jpim1 IF( tmask(ji,jj,1) /= 0. ) THEN zmaskt = tmask(ji+1,jj,1) * tmask(ji-1,jj,1) * tmask(ji,jj+1,1) * tmask(ji,jj-1,1) IF( zmaskt == 0. ) cmask(ji,jj) = 1._wp END IF END DO END DO CALL lbc_lnk( cmask , 'T', 1. ) ! lateral boundary conditions on cmask (sign unchanged) areacot = glob_sum( e1e2t(:,:) * cmask(:,:) ) ! IF( ln_rsttr ) THEN CALL iom_get( numrtr, jpdom_autoglo, 'SEDB'//ctrcnm(jpdet), sedpocb(:,:) ) CALL iom_get( numrtr, jpdom_autoglo, 'SEDN'//ctrcnm(jpdet), sedpocn(:,:) ) ELSE sedpocb(:,:) = 0._wp sedpocn(:,:) = 0._wp ENDIF ! CALL wrk_dealloc( jpi, jpj, zrro ) CALL wrk_dealloc( jpi, jpj, jpk, zdm0 ) ! END SUBROUTINE p2z_exp_init INTEGER FUNCTION p2z_exp_alloc() !!---------------------------------------------------------------------- !! *** ROUTINE p2z_exp_alloc *** !!---------------------------------------------------------------------- ALLOCATE( cmask(jpi,jpj) , dminl(jpi,jpj) , dmin3(jpi,jpj,jpk), & & sedpocb(jpi,jpj) , sedpocn(jpi,jpj), STAT=p2z_exp_alloc ) IF( p2z_exp_alloc /= 0 ) CALL ctl_warn('p2z_exp_alloc : failed to allocate arrays.') ! END FUNCTION p2z_exp_alloc #else !!====================================================================== !! Dummy module : No PISCES bio-model !!====================================================================== CONTAINS SUBROUTINE p2z_exp( kt ) ! Empty routine INTEGER, INTENT( in ) :: kt WRITE(*,*) 'p2z_exp: You should not have seen this print! error?', kt END SUBROUTINE p2z_exp #endif !!====================================================================== END MODULE p2zexp