#include "cppdefs.h" MODULE p4zmeso !!====================================================================== !! *** MODULE p4zmeso *** !! TOP : PISCES Compute the sources/sinks for mesozooplankton !!====================================================================== !! History : 1.0 ! 2002 (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 !!---------------------------------------------------------------------- #if defined key_pisces !! p4z_meso : Compute the sources/sinks for mesozooplankton !! p4z_meso_init : Initialization of the parameters for mesozooplankton !!---------------------------------------------------------------------- USE sms_pisces ! PISCES Source Minus Sink variables USE p4zprod ! production ! USE iom ! I/O manager IMPLICIT NONE PRIVATE PUBLIC p4z_meso ! called in p4zbio.F90 PUBLIC p4z_meso_init ! called in trcsms_pisces.F90 !!* Substitution # include "ocean2pisces.h90" # include "top_substitute.h90" REAL(wp), PUBLIC :: part2 !: part of calcite not dissolved in mesozoo guts REAL(wp), PUBLIC :: xpref2d !: mesozoo preference for diatoms REAL(wp), PUBLIC :: xpref2n !: mesozoo preference for nanophyto REAL(wp), PUBLIC :: xpref2z !: mesozoo preference for microzooplankton REAL(wp), PUBLIC :: xpref2c !: mesozoo preference for POC REAL(wp), PUBLIC :: xthresh2zoo !: zoo feeding threshold for mesozooplankton REAL(wp), PUBLIC :: xthresh2dia !: diatoms feeding threshold for mesozooplankton REAL(wp), PUBLIC :: xthresh2phy !: nanophyto feeding threshold for mesozooplankton REAL(wp), PUBLIC :: xthresh2poc !: poc feeding threshold for mesozooplankton REAL(wp), PUBLIC :: xthresh2 !: feeding threshold for mesozooplankton REAL(wp), PUBLIC :: resrat2 !: exsudation rate of mesozooplankton REAL(wp), PUBLIC :: mzrat2 !: microzooplankton mortality rate REAL(wp), PUBLIC :: grazrat2 !: maximal mesozoo grazing rate REAL(wp), PUBLIC :: xkgraz2 !: non assimilated fraction of P by mesozoo REAL(wp), PUBLIC :: unass2 !: Efficicency of mesozoo growth REAL(wp), PUBLIC :: sigma2 !: Fraction of mesozoo excretion as DOM REAL(wp), PUBLIC :: epsher2 !: growth efficiency REAL(wp), PUBLIC :: epsher2min !: minimum growth efficiency at high food for grazing 2 REAL(wp), PUBLIC :: grazflux !: mesozoo flux feeding rate !!---------------------------------------------------------------------- !! NEMO/TOP 4.0 , NEMO Consortium (2018) !! $Id: p4zmeso.F90 10367 2018-12-03 11:35:19Z cetlod $ !! Software governed by the CeCILL license (see ./LICENSE) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE p4z_meso( kt, knt ) !!--------------------------------------------------------------------- !! *** ROUTINE p4z_meso *** !! !! ** Purpose : Compute the sources/sinks for mesozooplankton !! !! ** Method : - ??? !!--------------------------------------------------------------------- INTEGER, INTENT(in) :: kt, knt ! ocean time step and ??? ! INTEGER :: ji, jj, jk REAL(wp) :: zcompadi, zcompaph, zcompapoc, zcompaz, zcompam REAL(wp) :: zgraze2 , zdenom, zdenom2 REAL(wp) :: zfact , zfood, zfoodlim, zproport, zbeta REAL(wp) :: zmortzgoc, zfrac, zfracfe, zratio, zratio2, zfracal, zgrazcal REAL(wp) :: zepsherf, zepshert, zepsherv, zgrarsig, zgraztotc, zgraztotn, zgraztotf REAL(wp) :: zgrarem2, zgrafer2, zgrapoc2, zprcaca, zmortz, zgrasrat, zgrasratn REAL(wp) :: zrespz, ztortz, zgrazd, zgrazz, zgrazpof REAL(wp) :: zgrazn, zgrazpoc, zgraznf, zgrazf REAL(wp) :: zgrazfffp, zgrazfffg, zgrazffep, zgrazffeg CHARACTER (len=25) :: charout REAL(wp), DIMENSION(PRIV_3D_BIOARRAY) :: zgrazing, zfezoo2 REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: zw3d, zz2ligprod !!--------------------------------------------------------------------- ! zgrazing(:,:,:) = 0. zfezoo2 (:,:,:) = 0. ! IF (ln_ligand) THEN ALLOCATE( zz2ligprod(PRIV_3D_BIOARRAY) ) zz2ligprod(:,:,:) = 0. ENDIF ! DO jk = KRANGE DO jj = JRANGE DO ji = IRANGE zcompam = MAX( ( trb(ji,jj,K,jpmes) - 1.e-9 ), 0.e0 ) zfact = xstep * tgfunc2(ji,jj,jk) * zcompam ! Respiration rates of both zooplankton ! ------------------------------------- zrespz = resrat2 * zfact * ( trb(ji,jj,K,jpmes) / ( xkmort & & + trb(ji,jj,K,jpmes) ) & & + 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 = mzrat2 * 1.e6 * zfact * trb(ji,jj,K,jpmes) * (1. - nitrfac(ji,jj,jk) ) ! zcompadi = MAX( ( trb(ji,jj,K,jpdia) - xthresh2dia ), 0.e0 ) zcompaz = MAX( ( trb(ji,jj,K,jpzoo) - xthresh2zoo ), 0.e0 ) zcompapoc = MAX( ( trb(ji,jj,K,jppoc) - xthresh2poc ), 0.e0 ) ! Size effect of nanophytoplankton on grazing : the smaller it is, the less prone ! it is to predation by mesozooplankton ! ------------------------------------------------------------------------------- zcompaph = MAX( ( trb(ji,jj,K,jpphy) - xthresh2phy ), 0.e0 ) & & * MIN(1., MAX( 0., ( quotan(ji,jj,jk) - 0.2) / 0.3 ) ) ! Mesozooplankton grazing ! ------------------------ zfood = xpref2d * zcompadi + xpref2z * zcompaz + xpref2n * zcompaph + xpref2c * zcompapoc zfoodlim = MAX( 0., zfood - MIN( 0.5 * zfood, xthresh2 ) ) zdenom = zfoodlim / ( xkgraz2 + zfoodlim ) zdenom2 = zdenom / ( zfood + rtrn ) zgraze2 = grazrat2 * xstep * tgfunc2(ji,jj,jk) * trb(ji,jj,K,jpmes) & & * (1. - nitrfac(ji,jj,jk)) zgrazd = zgraze2 * xpref2d * zcompadi * zdenom2 zgrazz = zgraze2 * xpref2z * zcompaz * zdenom2 zgrazn = zgraze2 * xpref2n * zcompaph * zdenom2 zgrazpoc = zgraze2 * xpref2c * zcompapoc * zdenom2 zgraznf = zgrazn * trb(ji,jj,K,jpnfe) & & / ( trb(ji,jj,K,jpphy) + rtrn) zgrazf = zgrazd * trb(ji,jj,K,jpdfe) & & / ( trb(ji,jj,K,jpdia) + rtrn) zgrazpof = zgrazpoc * trb(ji,jj,K,jpsfe) & & / ( trb(ji,jj,K,jppoc) + rtrn) ! Mesozooplankton flux feeding on GOC ! ---------------------------------- zgrazffeg = grazflux * xstep * wsbio4(ji,jj,jk) & & * tgfunc2(ji,jj,jk) * trb(ji,jj,K,jpgoc) & & * trb(ji,jj,K,jpmes) & & * (1. - nitrfac(ji,jj,jk)) zgrazfffg = zgrazffeg * trb(ji,jj,K,jpbfe) & & / (trb(ji,jj,K,jpgoc) + rtrn) zgrazffep = grazflux * xstep * wsbio3(ji,jj,jk) & & * tgfunc2(ji,jj,jk) * trb(ji,jj,K,jppoc) & & * trb(ji,jj,K,jpmes) & & * (1. - nitrfac(ji,jj,jk)) zgrazfffp = zgrazffep * trb(ji,jj,K,jpsfe) & & / (trb(ji,jj,K,jppoc) + rtrn) ! zgraztotc = zgrazd + zgrazz + zgrazn + zgrazpoc + zgrazffep + zgrazffeg ! Compute the proportion of filter feeders zproport = (zgrazffep + zgrazffeg)/(rtrn + zgraztotc) ! Compute fractionation of aggregates. It is assumed that ! diatoms based aggregates are more prone to fractionation ! since they are more porous (marine snow instead of fecal pellets) zratio = trb(ji,jj,K,jpgsi) / ( trb(ji,jj,K,jpgoc) + rtrn ) zratio2 = zratio * zratio zfrac = zproport * grazflux * xstep * wsbio4(ji,jj,jk) & & * trb(ji,jj,K,jpgoc) * trb(ji,jj,K,jpmes) & & * ( 0.2 + 3.8 * zratio2 / ( 1.**2 + zratio2 ) ) zfracfe = zfrac * trb(ji,jj,K,jpbfe) / (trb(ji,jj,K,jpgoc) + rtrn) zgrazffep = zproport * zgrazffep zgrazffeg = zproport * zgrazffeg zgrazfffp = zproport * zgrazfffp zgrazfffg = zproport * zgrazfffg zgraztotc = zgrazd + zgrazz + zgrazn + zgrazpoc + zgrazffep + zgrazffeg zgraztotn = zgrazd * quotad(ji,jj,jk) + zgrazz + zgrazn * quotan(ji,jj,jk) & & + zgrazpoc + zgrazffep + zgrazffeg zgraztotf = zgrazf + zgraznf + zgrazz * ferat3 + zgrazpof + zgrazfffp + zgrazfffg ! Total grazing ( grazing by microzoo is already computed in p4zmicro ) zgrazing(ji,jj,jk) = zgraztotc ! Mesozooplankton efficiency ! -------------------------- zgrasrat = ( zgraztotf + rtrn )/ ( zgraztotc + rtrn ) zgrasratn = ( zgraztotn + rtrn )/ ( zgraztotc + rtrn ) zepshert = MIN( 1., zgrasratn, zgrasrat / ferat3) zbeta = MAX(0., (epsher2 - epsher2min) ) zepsherf = epsher2min + zbeta / ( 1.0 + 0.04E6 * 12. * zfood * zbeta ) zepsherv = zepsherf * zepshert zgrarem2 = zgraztotc * ( 1. - zepsherv - unass2 ) & & + ( 1. - epsher2 - unass2 ) / ( 1. - epsher2 ) * ztortz zgrafer2 = zgraztotc * MAX( 0. , ( 1. - unass2 ) * zgrasrat - ferat3 * zepsherv ) & & + ferat3 * ( ( 1. - epsher2 - unass2 ) /( 1. - epsher2 ) * ztortz ) zgrapoc2 = zgraztotc * unass2 ! Update the arrays TRA which contain the biological sources and sinks zgrarsig = zgrarem2 * sigma2 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) + zgrarem2 - zgrarsig ! IF( ln_ligand ) THEN tra(ji,jj,jk,jplgw) = tra(ji,jj,jk,jplgw) + (zgrarem2 - zgrarsig) * ldocz zz2ligprod(ji,jj,jk) = (zgrarem2 - 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) + zgrafer2 zfezoo2(ji,jj,jk) = zgrafer2 tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + zgrarsig tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + rno3 * zgrarsig zmortz = ztortz + zrespz zmortzgoc = unass2 / ( 1. - epsher2 ) * ztortz + zrespz tra(ji,jj,jk,jpmes) = tra(ji,jj,jk,jpmes) - zmortz + zepsherv * zgraztotc tra(ji,jj,jk,jpdia) = tra(ji,jj,jk,jpdia) - zgrazd tra(ji,jj,jk,jpzoo) = tra(ji,jj,jk,jpzoo) - zgrazz tra(ji,jj,jk,jpphy) = tra(ji,jj,jk,jpphy) - zgrazn tra(ji,jj,jk,jpnch) = tra(ji,jj,jk,jpnch) - zgrazn * trb(ji,jj,K,jpnch) & & / ( trb(ji,jj,K,jpphy) + rtrn ) tra(ji,jj,jk,jpdch) = tra(ji,jj,jk,jpdch) - zgrazd * trb(ji,jj,K,jpdch) & & / ( trb(ji,jj,K,jpdia) + rtrn ) tra(ji,jj,jk,jpdsi) = tra(ji,jj,jk,jpdsi) - zgrazd * trb(ji,jj,K,jpdsi) & & / ( trb(ji,jj,K,jpdia) + rtrn ) tra(ji,jj,jk,jpgsi) = tra(ji,jj,jk,jpgsi) + zgrazd * trb(ji,jj,K,jpdsi) & & / ( trb(ji,jj,K,jpdia) + rtrn ) tra(ji,jj,jk,jpnfe) = tra(ji,jj,jk,jpnfe) - zgraznf tra(ji,jj,jk,jpdfe) = tra(ji,jj,jk,jpdfe) - zgrazf tra(ji,jj,jk,jppoc) = tra(ji,jj,jk,jppoc) - zgrazpoc - zgrazffep + zfrac prodpoc(ji,jj,jk) = prodpoc(ji,jj,jk) + zfrac conspoc(ji,jj,jk) = conspoc(ji,jj,jk) - zgrazpoc - zgrazffep tra(ji,jj,jk,jpgoc) = tra(ji,jj,jk,jpgoc) + zmortzgoc - zgrazffeg + zgrapoc2 - zfrac prodgoc(ji,jj,jk) = prodgoc(ji,jj,jk) + zmortzgoc + zgrapoc2 consgoc(ji,jj,jk) = consgoc(ji,jj,jk) - zgrazffeg - zfrac tra(ji,jj,jk,jpsfe) = tra(ji,jj,jk,jpsfe) - zgrazpof - zgrazfffp + zfracfe tra(ji,jj,jk,jpbfe) = tra(ji,jj,jk,jpbfe) + ferat3 * zmortzgoc - zgrazfffg & & + zgraztotf * unass2 - zfracfe zfracal = trb(ji,jj,K,jpcal) / (trb(ji,jj,K,jppoc) & & + trb(ji,jj,K,jpgoc) + rtrn ) zgrazcal = (zgrazffeg + zgrazpoc) * (1. - part2) * zfracal ! calcite production zprcaca = xfracal(ji,jj,jk) * zgrazn prodcal(ji,jj,jk) = prodcal(ji,jj,jk) + zprcaca ! prodcal=prodcal(nanophy)+prodcal(microzoo)+prodcal(mesozoo) ! zprcaca = part2 * zprcaca tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + zgrazcal - zprcaca tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) - 2. * ( zgrazcal + zprcaca ) tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal) - zgrazcal + zprcaca END DO END DO END DO ! #if defined key_iomput IF( lk_iomput .AND. knt == nrdttrc ) THEN ALLOCATE( zw3d(PRIV_3D_BIOARRAY) ) IF( iom_use( "GRAZ2" ) ) THEN zw3d(:,:,:) = zgrazing(:,:,:) * 1.e+3 * rfact2r * tmask(:,:,:) ! Total grazing of phyto by zooplankton CALL iom_put( "GRAZ2", zw3d ) ENDIF IF( iom_use( "PCAL" ) ) THEN zw3d(:,:,:) = prodcal(:,:,:) * 1.e+3 * rfact2r * tmask(:,:,:) ! Calcite production CALL iom_put( "PCAL", zw3d ) ENDIF IF( iom_use( "FEZOO2" ) ) THEN zw3d(:,:,:) = zfezoo2(:,:,:) * 1e9 * 1.e+3 * rfact2r * tmask(:,:,:) ! CALL iom_put( "FEZOO2", zw3d ) ENDIF IF( iom_use( "LPRODZ2" ) .AND. ln_ligand ) THEN zw3d(:,:,:) = zz2ligprod(:,:,:) * 1e9 * 1.e+3 * rfact2r * tmask(:,:,:) CALL iom_put( "LPRODZ2" , zw3d ) ENDIF DEALLOCATE( zw3d ) ENDIF #endif ! #if defined key_trc_diaadd DO jk = KRANGE DO jj = JRANGE DO ji = IRANGE trc3d(ji,jj,K,jp_grapoc2) = zgrazing(ji,jj,jk) * 1.e+3 * rfact2r * tmask(ji,jj,jk) ! grazing of phyto by mesozoo END DO END DO END DO DO jk = KRANGE DO jj = JRANGE DO ji = IRANGE trc3d(ji,jj,K,jp_meso2) = zgrazing(ji,jj,jk) * ( 1. - epsher2 - unass2 ) & & * (-o2ut) * sigma2 * 1.e+3 * rfact2r * tmask(ji,jj,jk) ! o2 consumption by Mesozoo END DO END DO END DO #endif IF (ln_ligand) DEALLOCATE( zz2ligprod ) ! IF(ln_ctl) THEN ! print mean trends (used for debugging) WRITE(charout, FMT="('meso')") 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_meso SUBROUTINE p4z_meso_init !!---------------------------------------------------------------------- !! *** ROUTINE p4z_meso_init *** !! !! ** Purpose : Initialization of mesozooplankton parameters !! !! ** Method : Read the nampismes namelist and check the parameters !! called at the first timestep (nittrc000) !! !! ** input : Namelist nampismes !!---------------------------------------------------------------------- INTEGER :: ios ! Local integer ! NAMELIST/namp4zmes/ part2, grazrat2, resrat2, mzrat2, xpref2n, xpref2d, xpref2z, & & xpref2c, xthresh2dia, xthresh2phy, xthresh2zoo, xthresh2poc, & & xthresh2, xkgraz2, epsher2, epsher2min, sigma2, unass2, grazflux !!---------------------------------------------------------------------- ! IF(lwp) THEN WRITE(numout,*) WRITE(numout,*) 'p4z_meso_init : Initialization of mesozooplankton parameters' WRITE(numout,*) '~~~~~~~~~~~~~' ENDIF ! REWIND( numnatp_ref ) ! Namelist nampismes in reference namelist : Pisces mesozooplankton READ ( numnatp_ref, namp4zmes, IOSTAT = ios, ERR = 901) 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namp4zmes in reference namelist', lwp ) REWIND( numnatp_cfg ) ! Namelist nampismes in configuration namelist : Pisces mesozooplankton READ ( numnatp_cfg, namp4zmes, IOSTAT = ios, ERR = 902 ) 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namp4zmes in configuration namelist', lwp ) IF(lwm) WRITE( numonp, namp4zmes ) ! IF(lwp) THEN ! control print WRITE(numout,*) ' Namelist : namp4zmes' WRITE(numout,*) ' part of calcite not dissolved in mesozoo guts part2 =', part2 WRITE(numout,*) ' mesozoo preference for phyto xpref2n =', xpref2n WRITE(numout,*) ' mesozoo preference for diatoms xpref2d =', xpref2d WRITE(numout,*) ' mesozoo preference for zoo xpref2z =', xpref2z WRITE(numout,*) ' mesozoo preference for poc xpref2c =', xpref2c WRITE(numout,*) ' microzoo feeding threshold for mesozoo xthresh2zoo =', xthresh2zoo WRITE(numout,*) ' diatoms feeding threshold for mesozoo xthresh2dia =', xthresh2dia WRITE(numout,*) ' nanophyto feeding threshold for mesozoo xthresh2phy =', xthresh2phy WRITE(numout,*) ' poc feeding threshold for mesozoo xthresh2poc =', xthresh2poc WRITE(numout,*) ' feeding threshold for mesozooplankton xthresh2 =', xthresh2 WRITE(numout,*) ' exsudation rate of mesozooplankton resrat2 =', resrat2 WRITE(numout,*) ' mesozooplankton mortality rate mzrat2 =', mzrat2 WRITE(numout,*) ' maximal mesozoo grazing rate grazrat2 =', grazrat2 WRITE(numout,*) ' mesozoo flux feeding rate grazflux =', grazflux WRITE(numout,*) ' non assimilated fraction of P by mesozoo unass2 =', unass2 WRITE(numout,*) ' Efficiency of Mesozoo growth epsher2 =', epsher2 WRITE(numout,*) ' Minimum Efficiency of Mesozoo growth epsher2min =', epsher2min WRITE(numout,*) ' Fraction of mesozoo excretion as DOM sigma2 =', sigma2 WRITE(numout,*) ' half sturation constant for grazing 2 xkgraz2 =', xkgraz2 ENDIF ! END SUBROUTINE p4z_meso_init #else !!====================================================================== !! Dummy module : No PISCES bio-model !!====================================================================== CONTAINS SUBROUTINE p4z_meso ! Empty routine END SUBROUTINE p4z_meso #endif !!====================================================================== END MODULE p4zmeso