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 sms_pisces ! USE prtctl_trc USE p4zopt USE p4zint USE p4zlim USE iom USE lib_mpp 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) :: & texcret , & !: 1 - excret texcret2 , & !: 1 - excret2 rpis180 , & !: rpi / 180 tpp !: Total primary production INTEGER :: nspyr !: number of timesteps per year !!* Substitution # include "top_substitute.h90" !!---------------------------------------------------------------------- !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) !! $Id: p4zprod.F90 1830 2010-04-12 13:03:51Z cetlod $ !! 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 REAL(wp) :: zsilfac, zfact REAL(wp) :: zprdiachl, zprbiochl, zsilim, ztn, zadap, zadap2 REAL(wp) :: zlim, zsilfac2, zsiborn, zprod, zetot2, zmax, zproreg, zproreg2 REAL(wp) :: zmxltst, zmxlday, zlim1 REAL(wp) :: zpislopen , zpislope2n REAL(wp) :: zrum, zcodel, zargu, zvol #if defined key_trc_diaadd && defined key_trc_dia3d REAL(wp) :: zrfact2 #if defined key_iomput && defined key_diaar5 REAL(wp), DIMENSION(jpi,jpj) :: zw2d #endif #endif 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 ! Computation of the optimal production # if defined key_off_degrad prmax(:,:,:) = 0.6 / rday * tgfunc(:,:,:) * facvol(:,:,:) # else prmax(:,:,:) = 0.6 / rday * tgfunc(:,:,:) # endif ! compute the day length depending on latitude and the day IF(lwp) write(numout,*) IF(lwp) write(numout,*) 'p4zday : - Julian day ', nday_year IF(lwp) write(numout,*) '~~~~~~' IF( nleapy == 1 .AND. MOD( nyear, 4 ) == 0 ) THEN zrum = FLOAT( nday_year - 80 ) / 366. ELSE zrum = FLOAT( nday_year - 80 ) / 365. ENDIF zcodel = ASIN( SIN( zrum * rpi * 2. ) * SIN( rpis180 * 23.5 ) ) ! day length in hours zstrn(:,:) = 0. DO jj = 1, jpj DO ji = 1, jpi zargu = TAN( zcodel ) * TAN( gphit(ji,jj) * rpis180 ) zargu = MAX( -1., MIN( 1., zargu ) ) zstrn(ji,jj) = MAX( 0.0, 24. - 2. * ACOS( zargu ) / rpis180 / 15. ) END DO END DO !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) * rday * 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) * rday * 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 / rday zmixnano(ji,jj) = 1.- zmxlday / ( 1.+ zmxlday ) zmixdiat(ji,jj) = 1.- zmxlday / ( 3.+ zmxlday ) END DO END DO ! Mixed-layer effect on production DO jk = 1, jpkm1 DO jj = 1, jpj DO ji = 1, jpi IF( fsdepw(ji,jj,jk+1) <= hmld(ji,jj) ) THEN 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 WHERE( zstrn(:,:) < 1.e0 ) zstrn(:,:) = 24. zstrn(:,:) = 24. / zstrn(:,:) !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) * rday * 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 = rday * 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) * rday * 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 = rday * 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) * texcret tra(ji,jj,jk,jpnch) = tra(ji,jj,jk,jpnch) + zprochln(ji,jj,jk) * texcret tra(ji,jj,jk,jpnfe) = tra(ji,jj,jk,jpnfe) + zprofen(ji,jj,jk) * texcret tra(ji,jj,jk,jpdia) = tra(ji,jj,jk,jpdia) + zprorcad(ji,jj,jk) * texcret2 tra(ji,jj,jk,jpdch) = tra(ji,jj,jk,jpdch) + zprochld(ji,jj,jk) * texcret2 tra(ji,jj,jk,jpdfe) = tra(ji,jj,jk,jpdfe) + zprofed(ji,jj,jk) * texcret2 tra(ji,jj,jk,jpbsi) = tra(ji,jj,jk,jpbsi) + zprorcad(ji,jj,jk) * zysopt(ji,jj,jk) * texcret2 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) & & - texcret * zprofen(ji,jj,jk) - texcret2 * zprofed(ji,jj,jk) tra(ji,jj,jk,jpsil) = tra(ji,jj,jk,jpsil) & & - texcret2 * 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 zvol = cvol(ji,jj,jk) #if defined key_off_degrad zvol = zvol * facvol(ji,jj,jk) #endif tpp = tpp + ( zprorca(ji,jj,jk) + zprorcad(ji,jj,jk) ) & * zvol * tmask(ji,jj,jk) * tmask_i(ji,jj) END DO END DO END DO IF( MOD( kt, nspyr ) == 0 .AND. jnt == nrdttrc ) THEN IF( lk_mpp ) CALL mpp_sum( tpp ) WRITE(numout,*) 'Total PP :' WRITE(numout,*) '-------------------- : ',tpp * 12. / 1.E12 WRITE(numout,*) '(GtC/yr)' tpp = 0. ENDIF #if defined key_trc_diaadd && defined key_trc_dia3d && ! defined key_iomput ! Supplementary diagnostics zrfact2 = 1.e3 * rfact2r trc3d(:,:,:,jp_pcs0_3d + 4) = zprorca (:,:,:) * zrfact2 * tmask(:,:,:) trc3d(:,:,:,jp_pcs0_3d + 5) = zprorcad(:,:,:) * zrfact2 * tmask(:,:,:) trc3d(:,:,:,jp_pcs0_3d + 6) = zpronew (:,:,:) * zrfact2 * tmask(:,:,:) trc3d(:,:,:,jp_pcs0_3d + 7) = zpronewd(:,:,:) * zrfact2 * tmask(:,:,:) trc3d(:,:,:,jp_pcs0_3d + 8) = zprorcad(:,:,:) * zrfact2 * tmask(:,:,:) * zysopt(:,:,:) trc3d(:,:,:,jp_pcs0_3d + 9) = zprofed (:,:,:) * zrfact2 * tmask(:,:,:) # if ! defined key_kriest trc3d(:,:,:,jp_pcs0_3d + 10) = zprofen (:,:,:) * zrfact2 * tmask(:,:,:) # endif #endif #if defined key_trc_diaadd && defined key_trc_dia3d && defined key_iomput zrfact2 = 1.e3 * rfact2r IF ( jnt == nrdttrc ) then CALL iom_put( "PPPHY" , zprorca (:,:,:) * zrfact2 * tmask(:,:,:) ) ! primary production by nanophyto CALL iom_put( "PPPHY2", zprorcad(:,:,:) * zrfact2 * tmask(:,:,:) ) ! primary production by diatom CALL iom_put( "PPNEWN", zpronew (:,:,:) * zrfact2 * tmask(:,:,:) ) ! new primary production by nanophyto CALL iom_put( "PPNEWD", zpronewd(:,:,:) * zrfact2 * tmask(:,:,:) ) ! new primary production by diatom CALL iom_put( "PBSi" , zprorcad(:,:,:) * zrfact2 * tmask(:,:,:) * zysopt(:,:,:) ) ! biogenic silica production CALL iom_put( "PFeD" , zprofed (:,:,:) * zrfact2 * tmask(:,:,:) ) ! biogenic iron production by diatom CALL iom_put( "PFeN" , zprofen (:,:,:) * zrfact2 * tmask(:,:,:) ) ! biogenic iron production by nanophyto ENDIF #if defined key_diaar5 IF ( jnt == nrdttrc ) then CALL iom_put( "TPP" , ( zprorca(:,:,:) + zprorcad(:,:,:) ) * zrfact2 * tmask(:,:,:) ) ! total primary production CALL iom_put( "TPNEW", ( zpronew(:,:,:) + zpronewd(:,:,:) ) * zrfact2 * tmask(:,:,:) ) ! total new primary production CALL iom_put( "TPBFE", ( zprofen(:,:,:) + zprofed (:,:,:) ) * zrfact2 * tmask(:,:,:) ) ! total biogenic iron production ENDIF ! primary production by nanophyto ( vertically integrated ) zw2d(:,:) = 0. DO jk = 1, jpkm1 zw2d(:,:) = zw2d(:,:) + zprorca (:,:,jk) * fse3t(:,:,jk) * zrfact2 * tmask(:,:,jk) ENDDO IF ( jnt == nrdttrc ) CALL iom_put( "INTPPPHY" , zw2d ) ! primary production by diatom ( vertically integrated ) zw2d(:,:) = 0. DO jk = 1, jpkm1 zw2d(:,:) = zw2d(:,:) + zprorcad(:,:,jk) * fse3t(:,:,jk) * zrfact2 * tmask(:,:,jk) ENDDO IF ( jnt == nrdttrc ) CALL iom_put( "INTPPPHY2" , zw2d ) ! total primary production ( vertically integrated ) zw2d(:,:) = 0. DO jk = 1, jpkm1 zw2d(:,:) = zw2d(:,:) + ( zprorca (:,:,jk) + zprorcad(:,:,jk) ) * fse3t(:,:,jk) * zrfact2 * tmask(:,:,jk) ENDDO IF ( jnt == nrdttrc ) CALL iom_put( "INTPP" , zw2d ) ! total new primary production ( vertically integrated ) zw2d(:,:) = 0. DO jk = 1, jpkm1 zw2d(:,:) = zw2d(:,:) + ( zpronew (:,:,jk) + zpronewd(:,:,jk) ) * fse3t(:,:,jk) * zrfact2 * tmask(:,:,jk) ENDDO IF ( jnt == nrdttrc ) CALL iom_put( "INTPNEW" , zw2d ) ! total biogenic iron production ( vertically integrated ) zw2d(:,:) = 0. DO jk = 1, jpkm1 zw2d(:,:) = zw2d(:,:) + ( zprofen (:,:,jk) + zprofed(:,:,jk) ) * fse3t(:,:,jk) * zrfact2 * tmask(:,:,jk) ENDDO IF ( jnt == nrdttrc ) CALL iom_put( "INTPBFE" , zw2d ) ! biogenic silica production ( vertically integrated ) zw2d(:,:) = 0. DO jk = 1, jpkm1 zw2d(:,:) = zw2d(:,:) + zprorcad(:,:,jk) * zysopt(:,:,jk) * fse3t(:,:,jk) * zrfact2 * tmask(:,:,jk) ENDDO IF ( jnt == nrdttrc ) CALL iom_put( "INTPBSI" , zw2d ) #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 nampisprod namelist and check the parameters !! called at the first timestep (nittrc000) !! !! ** input : Namelist nampisprod !! !!---------------------------------------------------------------------- NAMELIST/nampisprod/ pislope, pislope2, excret, excret2, chlcnm, chlcdm, & & fecnm, fecdm, grosip REWIND( numnat ) ! read numnat READ ( numnat, nampisprod ) IF(lwp) THEN ! control print WRITE(numout,*) ' ' WRITE(numout,*) ' Namelist parameters for phytoplankton growth, nampisprod' 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 ! number of timesteps per year nspyr = INT( nyear_len(1) * rday / rdt ) rpis180 = rpi / 180. texcret = 1.0 - excret texcret2 = 1.0 - excret2 tpp = 0. 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