#include "cppdefs.h" MODULE p4zmicro !!====================================================================== !! *** MODULE p4zmicro *** !! TOP : PISCES Compute the sources/sinks for microzooplankton !!====================================================================== #if defined key_pisces !! History : 1.0 ! 2004 (O. Aumont) Original code !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 !! 3.4 ! 2011-06 (O. Aumont, C. Ethe) Quota model for iron !!---------------------------------------------------------------------- !! p4z_micro : Compute the sources/sinks for microzooplankton !! p4z_micro_init : Initialize and read the appropriate namelist !!---------------------------------------------------------------------- USE sms_pisces ! PISCES Source Minus Sink variables USE p4zlim ! Co-limitations USE p4zprod ! production ! USE iom ! I/O manager IMPLICIT NONE PRIVATE PUBLIC p4z_micro ! called in p4zbio.F90 PUBLIC p4z_micro_init ! called in trcsms_pisces.F90 !!* Substitution # include "top_substitute.h90" # include "ocean2pisces.h90" REAL(wp), PUBLIC :: part !: part of calcite not dissolved in microzoo guts REAL(wp), PUBLIC :: xprefc !: microzoo preference for POC REAL(wp), PUBLIC :: xprefn !: microzoo preference for nanophyto REAL(wp), PUBLIC :: xprefd !: microzoo preference for diatoms REAL(wp), PUBLIC :: xthreshdia !: diatoms feeding threshold for microzooplankton REAL(wp), PUBLIC :: xthreshphy !: nanophyto threshold for microzooplankton REAL(wp), PUBLIC :: xthreshpoc !: poc threshold for microzooplankton REAL(wp), PUBLIC :: xthresh !: feeding threshold for microzooplankton REAL(wp), PUBLIC :: resrat !: exsudation rate of microzooplankton REAL(wp), PUBLIC :: mzrat !: microzooplankton mortality rate REAL(wp), PUBLIC :: grazrat !: maximal microzoo grazing rate REAL(wp), PUBLIC :: xkgraz !: Half-saturation constant of assimilation REAL(wp), PUBLIC :: unass !: Non-assimilated part of food REAL(wp), PUBLIC :: sigma1 !: Fraction of microzoo excretion as DOM REAL(wp), PUBLIC :: epsher !: growth efficiency for grazing 1 REAL(wp), PUBLIC :: epshermin !: minimum growth efficiency for grazing 1 !!---------------------------------------------------------------------- !! NEMO/TOP 4.0 , NEMO Consortium (2018) !! $Id: p4zmicro.F90 10374 2018-12-06 09:49:35Z cetlod $ !! Software governed by the CeCILL license (see ./LICENSE) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE p4z_micro( kt, knt ) !!--------------------------------------------------------------------- !! *** ROUTINE p4z_micro *** !! !! ** Purpose : Compute the sources/sinks for microzooplankton !! !! ** Method : - ??? !!--------------------------------------------------------------------- INTEGER, INTENT(in) :: kt ! ocean time step INTEGER, INTENT(in) :: knt ! ??? ! INTEGER :: ji, jj, jk REAL(wp) :: zcompadi, zcompaz , zcompaph, zcompapoc REAL(wp) :: zgraze , zdenom, zdenom2 REAL(wp) :: zfact , zfood, zfoodlim, zbeta REAL(wp) :: zepsherf, zepshert, zepsherv, zgrarsig, zgraztotc, zgraztotn, zgraztotf REAL(wp) :: zgrarem, zgrafer, zgrapoc, zprcaca, zmortz REAL(wp) :: zrespz, ztortz, zgrasrat, zgrasratn REAL(wp) :: zgrazp, zgrazm, zgrazsd REAL(wp) :: zgrazmf, zgrazsf, zgrazpf REAL(wp), DIMENSION(PRIV_3D_BIOARRAY) :: zgrazing, zfezoo REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: zw3d, zzligprod CHARACTER (len=25) :: charout !!--------------------------------------------------------------------- ! IF (ln_ligand) THEN ALLOCATE( zzligprod(PRIV_3D_BIOARRAY) ) zzligprod(:,:,:) = 0. ENDIF ! DO jk = KRANGE DO jj = JRANGE DO ji = IRANGE zcompaz = MAX( ( trb(ji,jj,K,jpzoo) - 1.e-9 ), 0.e0 ) zfact = xstep * tgfunc2(ji,jj,jk) * zcompaz ! Respiration rates of both zooplankton ! ------------------------------------- zrespz = resrat * zfact * trb(ji,jj,K,jpzoo) & & / ( xkmort + trb(ji,jj,K,jpzoo) ) & & + resrat * zfact * 3. * nitrfac(ji,jj,jk) ! Zooplankton mortality. A square function has been selected with ! no real reason except that it seems to be more stable and may mimic predation. ! --------------------------------------------------------------- ztortz = mzrat * 1.e6 * zfact * trb(ji,jj,K,jpzoo) * (1. - nitrfac(ji,jj,jk)) zcompadi = MIN( MAX( ( trb(ji,jj,K,jpdia) - xthreshdia ), 0.e0 ), xsizedia ) zcompaph = MAX( ( trb(ji,jj,K,jpphy) - xthreshphy ), 0.e0 ) zcompapoc = MAX( ( trb(ji,jj,K,jppoc) - xthreshpoc ), 0.e0 ) ! Microzooplankton grazing ! ------------------------ zfood = xprefn * zcompaph + xprefc * zcompapoc + xprefd * zcompadi zfoodlim = MAX( 0. , zfood - min(xthresh,0.5*zfood) ) zdenom = zfoodlim / ( xkgraz + zfoodlim ) zdenom2 = zdenom / ( zfood + rtrn ) zgraze = grazrat * xstep * tgfunc2(ji,jj,jk) & & * trb(ji,jj,K,jpzoo) * (1. - nitrfac(ji,jj,jk)) zgrazp = zgraze * xprefn * zcompaph * zdenom2 zgrazm = zgraze * xprefc * zcompapoc * zdenom2 zgrazsd = zgraze * xprefd * zcompadi * zdenom2 zgrazpf = zgrazp * trb(ji,jj,K,jpnfe) & & / (trb(ji,jj,K,jpphy) + rtrn) zgrazmf = zgrazm * trb(ji,jj,K,jpsfe) & & / (trb(ji,jj,K,jppoc) + rtrn) zgrazsf = zgrazsd * trb(ji,jj,K,jpdfe) & & / (trb(ji,jj,K,jpdia) + rtrn) ! zgraztotc = zgrazp + zgrazm + zgrazsd zgraztotf = zgrazpf + zgrazsf + zgrazmf zgraztotn = zgrazp * quotan(ji,jj,jk) + zgrazm + zgrazsd * quotad(ji,jj,jk) ! Grazing by microzooplankton zgrazing(ji,jj,jk) = zgraztotc ! Various remineralization and excretion terms ! -------------------------------------------- zgrasrat = ( zgraztotf + rtrn ) / ( zgraztotc + rtrn ) zgrasratn = ( zgraztotn + rtrn ) / ( zgraztotc + rtrn ) zepshert = MIN( 1., zgrasratn, zgrasrat / ferat3) zbeta = MAX(0., (epsher - epshermin) ) zepsherf = epshermin + zbeta / ( 1.0 + 0.04E6 * 12. * zfood * zbeta ) zepsherv = zepsherf * zepshert zgrafer = zgraztotc * MAX( 0. , ( 1. - unass ) * zgrasrat - ferat3 * zepsherv ) zgrarem = zgraztotc * ( 1. - zepsherv - unass ) zgrapoc = zgraztotc * unass ! Update of the TRA arrays ! ------------------------ zgrarsig = zgrarem * sigma1 tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) + zgrarsig tra(ji,jj,jk,jpnh4) = tra(ji,jj,jk,jpnh4) + zgrarsig tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) + zgrarem - zgrarsig ! IF( ln_ligand ) THEN tra(ji,jj,jk,jplgw) = tra(ji,jj,jk,jplgw) + (zgrarem - zgrarsig) * ldocz zzligprod(ji,jj,jk) = (zgrarem - zgrarsig) * ldocz ENDIF ! tra(ji,jj,jk,jpoxy) = tra(ji,jj,jk,jpoxy) - o2ut * zgrarsig tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) + zgrafer zfezoo(ji,jj,jk) = zgrafer tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zgrapoc prodpoc(ji,jj,jk) = prodpoc(ji,jj,jk) + zgrapoc tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + zgraztotf * unass tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + zgrarsig tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + rno3 * zgrarsig ! Update the arrays TRA which contain the biological sources and sinks ! -------------------------------------------------------------------- zmortz = ztortz + zrespz tra(ji,jj,jk,jpzoo) = tra(ji,jj,jk,jpzoo) - zmortz + zepsherv * zgraztotc tra(ji,jj,jk,jpphy) = tra(ji,jj,jk,jpphy) - zgrazp tra(ji,jj,jk,jpdia) = tra(ji,jj,jk,jpdia) - zgrazsd tra(ji,jj,jk,jpnch) = tra(ji,jj,jk,jpnch) & & - zgrazp * trb(ji,jj,K,jpnch)/(trb(ji,jj,K,jpphy)+rtrn) tra(ji,jj,jk,jpdch) = tra(ji,jj,jk,jpdch) & & - zgrazsd * trb(ji,jj,K,jpdch)/(trb(ji,jj,K,jpdia)+rtrn) tra(ji,jj,jk,jpdsi) = tra(ji,jj,jk,jpdsi) & & - zgrazsd * trb(ji,jj,K,jpdsi)/(trb(ji,jj,K,jpdia)+rtrn) tra(ji,jj,jk,jpgsi) = tra(ji,jj,jk,jpgsi) + zgrazsd & & * trb(ji,jj,K,jpdsi)/(trb(ji,jj,K,jpdia)+rtrn) tra(ji,jj,jk,jpnfe) = tra(ji,jj,jk,jpnfe) - zgrazpf tra(ji,jj,jk,jpdfe) = tra(ji,jj,jk,jpdfe) - zgrazsf tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) + zmortz - zgrazm prodpoc(ji,jj,jk) = prodpoc(ji,jj,jk) + zmortz conspoc(ji,jj,jk) = conspoc(ji,jj,jk) - zgrazm tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) + ferat3 * zmortz - zgrazmf ! ! calcite production zprcaca = xfracal(ji,jj,jk) * zgrazp prodcal(ji,jj,jk) = prodcal(ji,jj,jk) + zprcaca ! prodcal=prodcal(nanophy)+prodcal(microzoo)+prodcal(mesozoo) ! zprcaca = part * zprcaca tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) - zprcaca tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) - 2. * zprcaca tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal) + zprcaca END DO END DO END DO ! #if defined key_iomput IF( lk_iomput ) THEN IF( knt == nrdttrc ) THEN ALLOCATE( zw3d(PRIV_3D_BIOARRAY) ) IF( iom_use( "GRAZ1" ) ) THEN zw3d(:,:,:) = zgrazing(:,:,:) * 1.e+3 * rfact2r * tmask(:,:,:) ! Total grazing of phyto by zooplankton CALL iom_put( "GRAZ1", zw3d ) ENDIF IF( iom_use( "FEZOO" ) ) THEN zw3d(:,:,:) = zfezoo(:,:,:) * 1e9 * 1.e+3 * rfact2r * tmask(:,:,:) ! CALL iom_put( "FEZOO", zw3d ) ENDIF IF( iom_use( "LPRODZ" ) .AND. ln_ligand ) THEN zw3d(:,:,:) = zzligprod(:,:,:) * 1e9 * 1.e+3 * rfact2r * tmask(:,:,:) CALL iom_put( "LPRODZ" , zw3d ) ENDIF DEALLOCATE( zw3d ) ENDIF ENDIF #endif ! #if defined key_trc_diaadd DO jk = KRANGE DO jj = JRANGE DO ji = IRANGE trc3d(ji,jj,K,jp_grapoc) = zgrazing(ji,jj,jk) * 1.e+3 * rfact2r * tmask(ji,jj,jk) ! grazing of phyto by microzoo END DO END DO END DO DO jk = KRANGE DO jj = JRANGE DO ji = IRANGE trc3d(ji,jj,K,jp_mico2) = zgrazing(ji,jj,jk) * ( 1.- epsher - unass ) & & * (-o2ut) * sigma1 * 1.e+3 * rfact2r * tmask(ji,jj,jk) ! o2 consumption by Microzoo END DO END DO END DO #endif IF (ln_ligand) DEALLOCATE( zzligprod ) ! IF(ln_ctl) THEN ! print mean trends (used for debugging) WRITE(charout, FMT="('micro')") CALL prt_ctl_trc_info(charout) CALL prt_ctl_trc( charout, ltra='tra') ! CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) ENDIF ! END SUBROUTINE p4z_micro SUBROUTINE p4z_micro_init !!---------------------------------------------------------------------- !! *** ROUTINE p4z_micro_init *** !! !! ** Purpose : Initialization of microzooplankton parameters !! !! ** Method : Read the nampiszoo namelist and check the parameters !! called at the first timestep (nittrc000) !! !! ** input : Namelist nampiszoo !! !!---------------------------------------------------------------------- INTEGER :: ios ! Local integer ! NAMELIST/namp4zzoo/ part, grazrat, resrat, mzrat, xprefn, xprefc, & & xprefd, xthreshdia, xthreshphy, xthreshpoc, & & xthresh, xkgraz, epsher, epshermin, sigma1, unass !!---------------------------------------------------------------------- ! IF(lwp) THEN WRITE(numout,*) WRITE(numout,*) 'p4z_micro_init : Initialization of microzooplankton parameters' WRITE(numout,*) '~~~~~~~~~~~~~~' ENDIF ! REWIND( numnatp_ref ) ! Namelist nampiszoo in reference namelist : Pisces microzooplankton READ ( numnatp_ref, namp4zzoo, IOSTAT = ios, ERR = 901) 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namp4zzoo in reference namelist', lwp ) REWIND( numnatp_cfg ) ! Namelist nampiszoo in configuration namelist : Pisces microzooplankton READ ( numnatp_cfg, namp4zzoo, IOSTAT = ios, ERR = 902 ) 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namp4zzoo in configuration namelist', lwp ) IF(lwm) WRITE( numonp, namp4zzoo ) ! IF(lwp) THEN ! control print WRITE(numout,*) ' Namelist : namp4zzoo' WRITE(numout,*) ' part of calcite not dissolved in microzoo guts part =', part WRITE(numout,*) ' microzoo preference for POC xprefc =', xprefc WRITE(numout,*) ' microzoo preference for nano xprefn =', xprefn WRITE(numout,*) ' microzoo preference for diatoms xprefd =', xprefd WRITE(numout,*) ' diatoms feeding threshold for microzoo xthreshdia =', xthreshdia WRITE(numout,*) ' nanophyto feeding threshold for microzoo xthreshphy =', xthreshphy WRITE(numout,*) ' poc feeding threshold for microzoo xthreshpoc =', xthreshpoc WRITE(numout,*) ' feeding threshold for microzooplankton xthresh =', xthresh WRITE(numout,*) ' exsudation rate of microzooplankton resrat =', resrat WRITE(numout,*) ' microzooplankton mortality rate mzrat =', mzrat WRITE(numout,*) ' maximal microzoo grazing rate grazrat =', grazrat WRITE(numout,*) ' non assimilated fraction of P by microzoo unass =', unass WRITE(numout,*) ' Efficicency of microzoo growth epsher =', epsher WRITE(numout,*) ' Minimum efficicency of microzoo growth epshermin =', epshermin WRITE(numout,*) ' Fraction of microzoo excretion as DOM sigma1 =', sigma1 WRITE(numout,*) ' half sturation constant for grazing 1 xkgraz =', xkgraz ENDIF ! END SUBROUTINE p4z_micro_init #else !!====================================================================== !! Dummy module : No PISCES bio-model !!====================================================================== CONTAINS SUBROUTINE p4z_micro ! Empty routine END SUBROUTINE p4z_micro #endif !!====================================================================== END MODULE p4zmicro