MODULE p4zprod !!====================================================================== !! *** MODULE p4zprod *** !! TOP : PISCES !!====================================================================== !! History : 1.0 ! 2004 (O. Aumont) Original code !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 !!---------------------------------------------------------------------- #if defined key_pisces !!---------------------------------------------------------------------- !! 'key_pisces' PISCES bio-model !!---------------------------------------------------------------------- !! p4z_prod : !!---------------------------------------------------------------------- USE trc USE oce_trc ! USE trp_trc ! USE sms ! USE p4zday ! USE prtctl_trc USE p4zint USE p4zlim USE p4zopt IMPLICIT NONE PRIVATE PUBLIC p4z_prod ! called in p4zbio.F90 !! * Shared module variables REAL(wp), PUBLIC :: pislope = 3.0_wp , & !: & pislope2 = 3.0_wp , & !: & excret = 10.e-5_wp , & !: & excret2 = 0.05_wp , & !: & chlcnm = 0.033_wp , & !: & chlcdm = 0.05_wp , & !: & fecnm = 10.E-6_wp , & !: & fecdm = 15.E-6_wp , & !: & grosip = 0.151_wp REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpk) :: & & prmax REAL(wp) :: & tpp = 0. !: Total primary production !!* Substitution # include "domzgr_substitute.h90" !!---------------------------------------------------------------------- !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) !! $Header:$ !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE p4z_prod( kt , jnt ) !!--------------------------------------------------------------------- !! *** ROUTINE p4z_prod *** !! !! ** Purpose : Compute the phytoplankton production depending on !! light, temperature and nutrient availability !! !! ** Method : - ??? !!--------------------------------------------------------------------- INTEGER, INTENT(in) :: kt, jnt INTEGER :: ji, jj, jk, nspyr REAL(wp) :: zsilfac, zfact, zrfact2 REAL(wp) :: zprdiachl, zprbiochl, zsilim, ztn, zadap, zadap2 REAL(wp) :: zlim, zsilfac2, zsiborn, zprod, zetot2, zmax, zproreg, zproreg2 REAL(wp) :: zmxltst, zmxlday, zlim1, zexcret, zexcret2 REAL(wp) :: zpislopen , zpislope2n REAL(wp), DIMENSION(jpi,jpj) :: zmixnano , zmixdiat, zstrn REAL(wp), DIMENSION(jpi,jpj,jpk) :: zpislopead , zpislopead2 REAL(wp), DIMENSION(jpi,jpj,jpk) :: zprdia , zprbio, zysopt REAL(wp), DIMENSION(jpi,jpj,jpk) :: zprorca , zprorcad, zprofed REAL(wp), DIMENSION(jpi,jpj,jpk) :: zprofen , zprochln, zprochld REAL(wp), DIMENSION(jpi,jpj,jpk) :: zpronew , zpronewd CHARACTER (len=25) :: charout !!--------------------------------------------------------------------- IF( ( kt * jnt ) == nittrc000 ) CALL p4z_prod_init ! Initialization (first time-step only) zprorca (:,:,:) = 0.0 zprorcad(:,:,:) = 0.0 zprofed(:,:,:) = 0.0 zprofen(:,:,:) = 0.0 zprochln(:,:,:) = 0.0 zprochld(:,:,:) = 0.0 zpronew (:,:,:) = 0.0 zpronewd(:,:,:) = 0.0 zprdia (:,:,:) = 0.0 zprbio (:,:,:) = 0.0 zysopt (:,:,:) = 0.0 nspyr = INT( raass / rdt ) zexcret = 1. - excret zexcret2 = 1. - excret2 ! Computation of the optimal production ! ------------------------------------- # if defined key_off_degrad prmax(:,:,:) = 0.6 / rjjss * tgfunc(:,:,:) * facvol(:,:,:) # else prmax(:,:,:) = 0.6 / rjjss * tgfunc(:,:,:) # endif CALL p4z_day ! Computation of the day length !CDIR NOVERRCHK DO jk = 1, jpkm1 !CDIR NOVERRCHK DO jj = 1, jpj !CDIR NOVERRCHK DO ji = 1, jpi ! Computation of the P-I slope for nanos and diatoms ! -------------------------------------------------- IF( etot(ji,jj,jk) > 1.E-3 ) THEN ztn = MAX( 0., tn(ji,jj,jk) - 15. ) zadap = 0.+ 1.* ztn / ( 2.+ ztn ) zadap2 = 0.e0 zfact = EXP( -0.21 * emoy(ji,jj,jk) ) zpislopead (ji,jj,jk) = pislope * ( 1.+ zadap * zfact ) zpislopead2(ji,jj,jk) = pislope2 * ( 1.+ zadap2 * zfact ) zpislopen = zpislopead(ji,jj,jk) * trn(ji,jj,jk,jpnch) & & / ( trn(ji,jj,jk,jpphy) * 12. + rtrn ) & & / ( prmax(ji,jj,jk) * rjjss * xlimphy(ji,jj,jk) + rtrn ) zpislope2n = zpislopead2(ji,jj,jk) * trn(ji,jj,jk,jpdch) & & / ( trn(ji,jj,jk,jpdia) * 12. + rtrn ) & & / ( prmax(ji,jj,jk) * rjjss * xlimdia(ji,jj,jk) + rtrn ) ! Computation of production function ! ---------------------------------- zprbio(ji,jj,jk) = prmax(ji,jj,jk) * & & ( 1.- EXP( -zpislopen * enano(ji,jj,jk) ) ) zprdia(ji,jj,jk) = prmax(ji,jj,jk) * & & ( 1.- EXP( -zpislope2n * ediat(ji,jj,jk) ) ) ENDIF END DO END DO END DO DO jk = 1, jpkm1 DO jj = 1, jpj DO ji = 1, jpi IF( etot(ji,jj,jk) > 1.E-3 ) THEN ! Si/C of diatoms ! ------------------------ ! Si/C increases with iron stress and silicate availability ! Si/C is arbitrariliy increased for very high Si concentrations ! to mimic the very high ratios observed in the Southern Ocean (silpot2) zlim1 = trn(ji,jj,jk,jpsil) / ( trn(ji,jj,jk,jpsil) + xksi1 ) zlim = xdiatno3(ji,jj,jk) + xdiatnh4(ji,jj,jk) zsilim = MIN( zprdia(ji,jj,jk) / ( rtrn + prmax(ji,jj,jk) ), & & trn(ji,jj,jk,jpfer) / ( concdfe(ji,jj,jk) + trn(ji,jj,jk,jpfer) ), & & trn(ji,jj,jk,jppo4) / ( concdnh4 + trn(ji,jj,jk,jppo4) ), & & zlim ) zsilfac = 5.4 * EXP( -4.23 * zsilim ) * MAX( 0.e0, MIN( 1., 2.2 * ( zlim1 - 0.5 ) ) ) + 1.e0 zsiborn = MAX( 0.e0, ( trn(ji,jj,jk,jpsil) - 15.e-6 ) ) zsilfac2 = 1.+ 3.* zsiborn / ( zsiborn + xksi2 ) zsilfac = MIN( 6.4,zsilfac * zsilfac2) zysopt(ji,jj,jk) = grosip * zlim1 * zsilfac ENDIF END DO END DO END DO ! Computation of the limitation term due to ! A mixed layer deeper than the euphotic depth ! -------------------------------------------- DO jj = 1, jpj DO ji = 1, jpi zmxltst = MAX( 0.e0, hmld(ji,jj) - heup(ji,jj) ) zmxlday = zmxltst**2 / rjjss zmixnano(ji,jj) = 1.- zmxlday / ( 1.+ zmxlday ) zmixdiat(ji,jj) = 1.- zmxlday / ( 3.+ zmxlday ) END DO END DO DO jk = 1, jpkm1 DO jj = 1, jpj DO ji = 1, jpi IF( fsdepw(ji,jj,jk+1) <= hmld(ji,jj) ) THEN ! Mixed-layer effect on production ! -------------------------------- zprbio(ji,jj,jk) = zprbio(ji,jj,jk) * zmixnano(ji,jj) zprdia(ji,jj,jk) = zprdia(ji,jj,jk) * zmixdiat(ji,jj) ENDIF END DO END DO END DO ! Computation of the fractionnal day length ! ----------------------------------------- zstrn(:,:) = strn(:,:) DO jj = 1, jpj DO ji = 1, jpi ! Computation of the maximum light intensity ! ------------------------------------------ IF( zstrn(ji,jj) < 1.e0 ) zstrn(ji,jj) = 24. zstrn(ji,jj) = 24./zstrn(ji,jj) END DO END DO !CDIR NOVERRCHK DO jk = 1, jpkm1 !CDIR NOVERRCHK DO jj = 1, jpj !CDIR NOVERRCHK DO ji = 1, jpi IF( etot(ji,jj,jk) > 1.E-3 ) THEN ! Computation of the various production terms for nanophyto. ! ---------------------------------------------------------- zetot2 = enano(ji,jj,jk) * zstrn(ji,jj) zmax = MAX( 0.1, xlimphy(ji,jj,jk) ) zpislopen = zpislopead(ji,jj,jk) & & * trn(ji,jj,jk,jpnch) / ( rtrn + trn(ji,jj,jk,jpphy) * 12.) & & / ( prmax(ji,jj,jk) * rjjss * zmax + rtrn ) zprbiochl = prmax(ji,jj,jk) * ( 1.- EXP( -zpislopen * zetot2 ) ) zprorca(ji,jj,jk) = zprbio(ji,jj,jk) * xlimphy(ji,jj,jk) * trn(ji,jj,jk,jpphy) * rfact2 zpronew(ji,jj,jk) = zprorca(ji,jj,jk) * xnanono3(ji,jj,jk) & & / ( xnanono3(ji,jj,jk) + xnanonh4(ji,jj,jk) + rtrn ) zprod = rjjss * zprorca(ji,jj,jk) * zprbiochl * trn(ji,jj,jk,jpphy) *zmax zprofen(ji,jj,jk) = (fecnm)**2 * zprod / chlcnm & & / ( zpislopead(ji,jj,jk) * zetot2 * trn(ji,jj,jk,jpnfe) + rtrn ) zprochln(ji,jj,jk) = chlcnm * 144. * zprod & & / ( zpislopead(ji,jj,jk) * zetot2 * trn(ji,jj,jk,jpnch) + rtrn ) ENDIF END DO END DO END DO !CDIR NOVERRCHK DO jk = 1, jpkm1 !CDIR NOVERRCHK DO jj = 1, jpj !CDIR NOVERRCHK DO ji = 1, jpi IF( etot(ji,jj,jk) > 1.E-3 ) THEN ! Computation of the various production terms for diatoms ! ------------------------------------------------------- zetot2 = ediat(ji,jj,jk) * zstrn(ji,jj) zmax = MAX( 0.1, xlimdia(ji,jj,jk) ) zpislope2n = zpislopead2(ji,jj,jk) * trn(ji,jj,jk,jpdch) & & / ( rtrn + trn(ji,jj,jk,jpdia) * 12.) & & / ( prmax(ji,jj,jk) * rjjss * zmax + rtrn ) zprdiachl = prmax(ji,jj,jk) * ( 1.- EXP( -zetot2 * zpislope2n ) ) zprorcad(ji,jj,jk) = zprdia(ji,jj,jk) * xlimdia(ji,jj,jk) * trn(ji,jj,jk,jpdia) * rfact2 zpronewd(ji,jj,jk) = zprorcad(ji,jj,jk) * xdiatno3(ji,jj,jk) & & / ( xdiatno3(ji,jj,jk) + xdiatnh4(ji,jj,jk) + rtrn ) zprod = rjjss * zprorcad(ji,jj,jk) * zprdiachl * trn(ji,jj,jk,jpdia) * zmax zprofed(ji,jj,jk) = (fecdm)**2 * zprod / chlcdm & & / ( zpislopead2(ji,jj,jk) * zetot2 * trn(ji,jj,jk,jpdfe) + rtrn ) zprochld(ji,jj,jk) = chlcdm * 144. * zprod & & / ( zpislopead2(ji,jj,jk) * zetot2 * trn(ji,jj,jk,jpdch) + rtrn ) ENDIF END DO END DO END DO ! ! ! Update the arrays TRA which contain the biological sources and sinks ! -------------------------------------------------------------------- DO jk = 1, jpkm1 DO jj = 1, jpj DO ji =1 ,jpi zproreg = zprorca(ji,jj,jk) - zpronew(ji,jj,jk) zproreg2 = zprorcad(ji,jj,jk) - zpronewd(ji,jj,jk) tra(ji,jj,jk,jppo4) = tra(ji,jj,jk,jppo4) - zprorca(ji,jj,jk) - zprorcad(ji,jj,jk) tra(ji,jj,jk,jpno3) = tra(ji,jj,jk,jpno3) - zpronew(ji,jj,jk) - zpronewd(ji,jj,jk) tra(ji,jj,jk,jpnh4) = tra(ji,jj,jk,jpnh4) - zproreg - zproreg2 tra(ji,jj,jk,jpphy) = tra(ji,jj,jk,jpphy) + zprorca(ji,jj,jk) * zexcret tra(ji,jj,jk,jpnch) = tra(ji,jj,jk,jpnch) + zprochln(ji,jj,jk) * zexcret tra(ji,jj,jk,jpnfe) = tra(ji,jj,jk,jpnfe) + zprofen(ji,jj,jk) * zexcret tra(ji,jj,jk,jpdia) = tra(ji,jj,jk,jpdia) + zprorcad(ji,jj,jk) * zexcret2 tra(ji,jj,jk,jpdch) = tra(ji,jj,jk,jpdch) + zprochld(ji,jj,jk) * zexcret2 tra(ji,jj,jk,jpdfe) = tra(ji,jj,jk,jpdfe) + zprofed(ji,jj,jk) * zexcret2 tra(ji,jj,jk,jpbsi) = tra(ji,jj,jk,jpbsi) + zprorcad(ji,jj,jk) * zysopt(ji,jj,jk) * zexcret2 tra(ji,jj,jk,jpdoc) = tra(ji,jj,jk,jpdoc) + & & excret2 * zprorcad(ji,jj,jk) + excret * zprorca(ji,jj,jk) tra(ji,jj,jk,jpoxy) = tra(ji,jj,jk,jpoxy) + o2ut * ( zproreg + zproreg2) & & + ( o2ut + o2nit ) * ( zpronew(ji,jj,jk) + zpronewd(ji,jj,jk) ) tra(ji,jj,jk,jpfer) = tra(ji,jj,jk,jpfer) & & - zexcret * zprofen(ji,jj,jk) - zexcret2 * zprofed(ji,jj,jk) tra(ji,jj,jk,jpsil) = tra(ji,jj,jk,jpsil) & & - zexcret2 * zprorcad(ji,jj,jk) * zysopt(ji,jj,jk) tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) - zprorca(ji,jj,jk) - zprorcad(ji,jj,jk) tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) & & + rno3 * ( zpronew(ji,jj,jk) + zpronewd(ji,jj,jk) ) END DO END DO END DO ! Total primary production per year DO jk = 1, jpkm1 DO jj = 1, jpj DO ji = 1, jpi tpp = tpp + ( zprorca(ji,jj,jk) + zprorcad(ji,jj,jk) ) & #if defined key_off_degrad & * facvol(ji,jj,jk) & #endif & * e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,jk) * tmask_i(ji,jj) END DO END DO END DO IF( MOD( kt, nspyr ) == 0 ) THEN WRITE(numout,*) 'Total PP :' WRITE(numout,*) '-------------------- : ',tpp * 12. / 1.E12 WRITE(numout,*) '(GtC/an)' tpp = 0. ENDIF #if defined key_trc_dia3d zrfact2 = 1.e3 * rfact2r ! Supplementary diagnostics ! ------------------------- trc3d(:,:,:,4) = etot(:,:,:) trc3d(:,:,:,5) = zprorca(:,:,:) * zrfact2 trc3d(:,:,:,6) = zprorcad(:,:,:) * zrfact2 trc3d(:,:,:,7) = zpronew(:,:,:) * zrfact2 trc3d(:,:,:,8) = zpronewd(:,:,:) * zrfact2 trc3d(:,:,:,9) = zprorcad(:,:,:) * zysopt(:,:,:) * zrfact2 trc3d(:,:,:,10) = zprofed(:,:,:) * zrfact2 #if ! defined key_kriest trc3d(:,:,:,11) = zprofen(:,:,:) * zrfact2 #endif #endif IF(ln_ctl) THEN ! print mean trends (used for debugging) WRITE(charout, FMT="('prod')") CALL prt_ctl_trc_info(charout) CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) ENDIF END SUBROUTINE p4z_prod SUBROUTINE p4z_prod_init !!---------------------------------------------------------------------- !! *** ROUTINE p4z_prod_init *** !! !! ** Purpose : Initialization of phytoplankton production parameters !! !! ** Method : Read the natprod namelist and check the parameters !! called at the first timestep (nittrc000) !! !! ** input : Namelist natprod !! !!---------------------------------------------------------------------- NAMELIST/natprod/ pislope, pislope2, excret, excret2, chlcnm, chlcdm, & & fecnm, fecdm, grosip REWIND( numnat ) ! read numnat READ ( numnat, natprod ) IF(lwp) THEN ! control print WRITE(numout,*) ' ' WRITE(numout,*) ' Namelist parameters for phytoplankton growth, natprod' WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' WRITE(numout,*) ' mean Si/C ratio grosip =', grosip WRITE(numout,*) ' P-I slope pislope =', pislope WRITE(numout,*) ' excretion ratio of nanophytoplankton excret =', excret WRITE(numout,*) ' excretion ratio of diatoms excret2 =', excret2 WRITE(numout,*) ' P-I slope for diatoms pislope2 =', pislope2 WRITE(numout,*) ' Minimum Chl/C in nanophytoplankton chlcnm =', chlcnm WRITE(numout,*) ' Minimum Chl/C in diatoms chlcdm =', chlcdm WRITE(numout,*) ' Maximum Fe/C in nanophytoplankton fecnm =', fecnm WRITE(numout,*) ' Minimum Fe/C in diatoms fecdm =', fecdm ENDIF END SUBROUTINE p4z_prod_init #else !!====================================================================== !! Dummy module : No PISCES bio-model !!====================================================================== CONTAINS SUBROUTINE p4z_prod ! Empty routine END SUBROUTINE p4z_prod #endif !!====================================================================== END MODULE p4zprod