MODULE asmphytobal_medusa !!====================================================================== !! *** MODULE asmphyto2dbal_medusa *** !! Calculate increments to MEDUSA based on surface phyto2d increments !! !! IMPORTANT NOTE: This calls the bioanalysis routine of Hemmings et al. !! For licensing reasons this is kept in its own internal Met Office !! branch (dev/frdf/vn3.6_nitrogen_balancing) rather than in the Paris !! repository, and must be merged in when building. !! !!====================================================================== !! History : 3.6 ! 2017-08 (D. Ford) Adapted from asmphyto2dbal_hadocc !!---------------------------------------------------------------------- #if defined key_asminc && defined key_medusa !!---------------------------------------------------------------------- !! 'key_asminc' : assimilation increment interface !! 'key_medusa' : MEDUSA model !!---------------------------------------------------------------------- !! asm_phyto2d_bal_medusa : routine to calculate increments to MEDUSA !!---------------------------------------------------------------------- USE par_kind, ONLY: wp ! kind parameters USE par_oce, ONLY: jpi, jpj, jpk ! domain array sizes USE dom_oce, ONLY: gdepw_n ! domain information USE zdftmx, ONLY: ln_tmx_itf, & ! Indonesian Throughflow & mask_itf ! tidal mixing mask USE iom ! i/o USE sms_medusa ! MEDUSA parameters USE par_medusa ! MEDUSA parameters USE par_trc, ONLY: jptra ! Tracer parameters USE bioanalysis ! Nitrogen balancing IMPLICIT NONE PRIVATE PUBLIC asm_phyto_bal_medusa ! Default values for biological assimilation parameters ! Should match Hemmings et al. (2008) REAL(wp), PARAMETER :: balnutext = 0.6 !: Default nutrient balancing factor REAL(wp), PARAMETER :: balnutmin = 0.1 !: Fraction of phytoplankton loss to nutrient REAL(wp), PARAMETER :: r = 1 !: Reliability of model specific growth rate REAL(wp), PARAMETER :: beta_g = 0.05 !: Low rate bias correction for growth rate estimator REAL(wp), PARAMETER :: beta_l = 0.05 !: Low rate bias correction for primary loss rate estimator REAL(wp), PARAMETER :: beta_m = 0.05 !: Low rate bias correction for secondary loss rate estimator REAL(wp), PARAMETER :: a_g = 0.2 !: Error s.d. for log10 of growth rate estimator REAL(wp), PARAMETER :: a_l = 0.4 !: Error s.d. for log10 of primary loss rate estimator REAL(wp), PARAMETER :: a_m = 0.7 !: Error s.d. for log10 of secondary loss rate estimator REAL(wp), PARAMETER :: zfracb0 = 0.7 !: Base zooplankton fraction of loss to Z & D REAL(wp), PARAMETER :: zfracb1 = 0 !: Phytoplankton sensitivity of zooplankton fraction REAL(wp), PARAMETER :: qrfmax = 1.1 !: Maximum nutrient limitation reduction factor REAL(wp), PARAMETER :: qafmax = 1.1 !: Maximum nutrient limitation amplification factor REAL(wp), PARAMETER :: zrfmax = 2 !: Maximum zooplankton reduction factor REAL(wp), PARAMETER :: zafmax = 2 !: Maximum zooplankton amplification factor REAL(wp), PARAMETER :: prfmax = 10 !: Maximum phytoplankton reduction factor (secondary) REAL(wp), PARAMETER :: incphymin = 0.0001 !: Minimum size of non-zero phytoplankton increment REAL(wp), PARAMETER :: integnstep = 20 !: Number of steps for p.d.f. integral evaluation REAL(wp), PARAMETER :: pthreshold = 0.01 !: Fractional threshold level for setting p.d.f. ! LOGICAL, PARAMETER :: diag_active = .TRUE. !: Depth-independent diagnostics LOGICAL, PARAMETER :: diag_fulldepth_active = .TRUE. !: Full-depth diagnostics LOGICAL, PARAMETER :: gl_active = .TRUE. !: Growth/loss-based balancing LOGICAL, PARAMETER :: nbal_active = .TRUE. !: Nitrogen balancing LOGICAL, PARAMETER :: subsurf_active = .TRUE. !: Increments below MLD LOGICAL, PARAMETER :: deepneg_active = .FALSE. !: Negative primary increments below MLD LOGICAL, PARAMETER :: deeppos_active = .FALSE. !: Positive primary increments below MLD LOGICAL, PARAMETER :: nutprof_active = .TRUE. !: Secondary increments CONTAINS SUBROUTINE asm_phyto_bal_medusa( kdeps, & & ld_chltot, & & pinc_chltot_3d, & & ld_chldia, & & pinc_chldia_3d, & & ld_chlnon, & & pinc_chlnon_3d, & & ld_phytot, & & pinc_phytot_3d, & & ld_phydia, & & pinc_phydia_3d, & & ld_phynon, & & pinc_phynon_3d, & & pincper, & & p_maxchlinc, ld_phytobal, pmld, & & pgrow_avg_bkg_3d, ploss_avg_bkg_3d, & & phyt_avg_bkg_3d, mld_max_bkg, & & tracer_bkg, phyto_balinc ) !!--------------------------------------------------------------------------- !! *** ROUTINE asm_phyto_bal_medusa *** !! !! ** Purpose : calculate increments to MEDUSA from phytoplankton increments !! !! ** Method : average up MEDUSA to look like HadOCC !! call nitrogen balancing scheme !! separate back out to MEDUSA !! !! ** Action : populate phyto_balinc !! !! References : Hemmings et al., 2008, J. Mar. Res. !! Ford et al., 2012, Ocean Sci. !!--------------------------------------------------------------------------- !! INTEGER, INTENT(in ) :: kdeps ! No. inc deps 1 or jpk LOGICAL, INTENT(in ) :: ld_chltot ! Assim chltot y/n REAL(wp), INTENT(inout), DIMENSION(jpi,jpj,kdeps) :: pinc_chltot_3d ! chltot increments (3D) LOGICAL, INTENT(in ) :: ld_chldia ! Assim chldia y/n REAL(wp), INTENT(inout), DIMENSION(jpi,jpj,kdeps) :: pinc_chldia_3d ! chldia increments (3D) LOGICAL, INTENT(in ) :: ld_chlnon ! Assim chlnon y/n REAL(wp), INTENT(inout), DIMENSION(jpi,jpj,kdeps) :: pinc_chlnon_3d ! chlnon increments (3D) LOGICAL, INTENT(in ) :: ld_phytot ! Assim phytot y/n REAL(wp), INTENT(inout), DIMENSION(jpi,jpj,kdeps) :: pinc_phytot_3d ! phytot increments (3D) LOGICAL, INTENT(in ) :: ld_phydia ! Assim phydia y/n REAL(wp), INTENT(inout), DIMENSION(jpi,jpj,kdeps) :: pinc_phydia_3d ! phydia increments (3D) LOGICAL, INTENT(in ) :: ld_phynon ! Assim phynon y/n REAL(wp), INTENT(inout), DIMENSION(jpi,jpj,kdeps) :: pinc_phynon_3d ! phynon increments (3D) REAL(wp), INTENT(in ) :: pincper ! Assimilation period REAL(wp), INTENT(in ) :: p_maxchlinc ! Max chl increment LOGICAL, INTENT(in ) :: ld_phytobal ! Balancing y/n REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pmld ! Mixed layer depth REAL(wp), INTENT(in ), DIMENSION(jpi,jpj,kdeps) :: pgrow_avg_bkg_3d ! Avg phyto growth (3D) REAL(wp), INTENT(in ), DIMENSION(jpi,jpj,kdeps) :: ploss_avg_bkg_3d ! Avg phyto loss (3D) REAL(wp), INTENT(in ), DIMENSION(jpi,jpj,kdeps) :: phyt_avg_bkg_3d ! Avg phyto (3D) REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: mld_max_bkg ! Max MLD REAL(wp), INTENT(in ), DIMENSION(jpi,jpj,jpk,jptra) :: tracer_bkg ! State variables REAL(wp), INTENT( out), DIMENSION(jpi,jpj,jpk,jptra) :: phyto_balinc ! Balancing increments !! INTEGER :: ji, jj, jk, jn ! Loop counters INTEGER :: jkmax ! Loop index INTEGER :: jkinc ! Loop index INTEGER, DIMENSION(6) :: i_tracer ! Tracer indices REAL(wp) :: n2be_p ! N:biomass for total phy REAL(wp) :: n2be_z ! N:biomass for total zoo REAL(wp) :: n2be_d ! N:biomass for detritus REAL(wp) :: zfrac ! Fraction REAL(wp) :: zfrac_chn ! Fraction of jpchn REAL(wp) :: zfrac_chd ! Fraction of jpchd REAL(wp) :: zfrac_phn ! Fraction of jpphn REAL(wp) :: zfrac_phd ! Fraction of jpphd REAL(wp) :: zfrac_zmi ! Fraction of jpzmi REAL(wp) :: zfrac_zme ! Fraction of jpzme REAL(wp) :: zrat_pds_phd ! Ratio of jppds:jpphd REAL(wp) :: zrat_chd_phd ! Ratio of jpchd:jpphd REAL(wp) :: zrat_chn_phn ! Ratio of jpchn:jpphn REAL(wp) :: zrat_phn_chn ! Ratio of jpphn:jpchn REAL(wp) :: zrat_phd_chd ! Ratio of jpphd:jpchd REAL(wp) :: zrat_pds_chd ! Ratio of jppds:jpchd REAL(wp) :: zrat_dtc_det ! Ratio of jpdtc:jpdet REAL(wp), DIMENSION(jpi,jpj) :: cchl_p_2d ! C:Chl for total phy (2D) REAL(wp), DIMENSION(jpi,jpj,jpk) :: cchl_p_3d ! C:Chl for total phy (3D) REAL(wp), DIMENSION(16) :: modparm ! Model parameters REAL(wp), DIMENSION(20) :: assimparm ! Assimilation parameters REAL(wp), DIMENSION(jpi,jpj,1,6) :: bstate_2d ! Background state (2D) REAL(wp), DIMENSION(jpi,jpj,jpk,6) :: bstate_3d ! Background state (3D) REAL(wp), DIMENSION(jpi,jpj,1,6) :: outincs_2d ! Balancing increments (2D) REAL(wp), DIMENSION(jpi,jpj,jpk,6) :: outincs_3d ! Balancing increments (3D) REAL(wp), DIMENSION(jpi,jpj,22) :: diag ! Depth-indep diagnostics REAL(wp), DIMENSION(jpi,jpj,1,22) :: diag_fulldepth_2d ! Full-depth diagnostics (2D) REAL(wp), DIMENSION(jpi,jpj,jpk,22) :: diag_fulldepth_3d ! Full-depth diagnostics (3D) REAL(wp), DIMENSION(jpi,jpj,1) :: tmask_2d ! Single-level tmask REAL(wp), DIMENSION(jpi,jpj) :: pinc_chltot_2d ! chltot increments (2D) REAL(wp), DIMENSION(jpi,jpj) :: pinc_chldia_2d ! chldia increments (2D) REAL(wp), DIMENSION(jpi,jpj) :: pinc_chlnon_2d ! chlnon increments (2D) REAL(wp), DIMENSION(jpi,jpj) :: pinc_phytot_2d ! phytot increments (2D) REAL(wp), DIMENSION(jpi,jpj) :: pinc_phydia_2d ! phydia increments (2D) REAL(wp), DIMENSION(jpi,jpj) :: pinc_phynon_2d ! phynon increments (2D) REAL(wp), DIMENSION(jpi,jpj) :: pgrow_avg_bkg_2d ! Avg phyto growth (2D) REAL(wp), DIMENSION(jpi,jpj) :: ploss_avg_bkg_2d ! Avg phyto loss (2D) REAL(wp), DIMENSION(jpi,jpj) :: phyt_avg_bkg_2d ! Avg phyto (2D) !!--------------------------------------------------------------------------- ! If p_maxchlinc > 0 then cap total absolute chlorophyll increment at that value IF ( p_maxchlinc > 0.0 ) THEN DO jk = 1, kdeps DO jj = 1, jpj DO ji = 1, jpi IF ( ld_chltot ) THEN pinc_chltot_3d(ji,jj,jk) = MAX( -1.0 * p_maxchlinc, MIN( pinc_chltot_3d(ji,jj,jk), p_maxchlinc ) ) ELSE IF ( ld_chldia .AND. ld_chlnon ) THEN pinc_chltot_3d(ji,jj,jk) = pinc_chldia_3d(ji,jj,jk) + pinc_chlnon_3d(ji,jj,jk) pinc_chltot_3d(ji,jj,jk) = MAX( -1.0 * p_maxchlinc, MIN( pinc_chltot_3d(ji,jj,jk), p_maxchlinc ) ) IF ( pinc_chltot_3d(ji,jj,jk) .NE. ( pinc_chldia_3d(ji,jj,jk) + pinc_chlnon_3d(ji,jj,jk) ) ) THEN zfrac = pinc_chltot_3d(ji,jj,jk) / ( pinc_chldia_3d(ji,jj,jk) + pinc_chlnon_3d(ji,jj,jk) ) pinc_chldia_3d(ji,jj,jk) = pinc_chldia_3d(ji,jj,jk) * zfrac pinc_chlnon_3d(ji,jj,jk) = pinc_chlnon_3d(ji,jj,jk) * zfrac ENDIF ELSE IF ( ld_chldia ) THEN pinc_chldia_3d(ji,jj,jk) = MAX( -1.0 * p_maxchlinc, MIN( pinc_chldia_3d(ji,jj,jk), p_maxchlinc ) ) pinc_chltot_3d(ji,jj,jk) = pinc_chldia_3d(ji,jj,jk) ELSE IF ( ld_chlnon ) THEN pinc_chlnon_3d(ji,jj,jk) = MAX( -1.0 * p_maxchlinc, MIN( pinc_chlnon_3d(ji,jj,jk), p_maxchlinc ) ) pinc_chltot_3d(ji,jj,jk) = pinc_chlnon_3d(ji,jj,jk) ENDIF END DO END DO END DO ENDIF IF ( ld_phytot .OR. ld_phydia .OR. ld_phynon ) THEN CALL ctl_stop( ' No phytoplankton carbon assimilation quite yet' ) ENDIF IF ( ld_phytobal ) THEN ! Nitrogen balancing ! Set up model parameters to be passed into Hemmings balancing routine. ! For now these are hardwired to the standard HadOCC parameter values ! (except C:N ratios) as this is what the scheme was developed for. ! Obviously, HadOCC and MEDUSA are rather different models, so this ! isn't ideal, but there's not always direct analogues between the two ! parameter sets, so it's the easiest way to get something running. ! In the longer term, some serious MarMOT-based development is required. modparm(1) = 0.1 ! grow_sat modparm(2) = 2.0 ! psmax modparm(3) = 0.845 ! par modparm(4) = 0.02 ! alpha modparm(5) = 0.05 ! resp_rate modparm(6) = 0.05 ! pmort_rate modparm(7) = 0.01 ! phyto_min modparm(8) = 0.05 ! z_mort_1 modparm(9) = 1.0 ! z_mort_2 modparm(10) = ( xthetapn + xthetapd ) / 2.0 ! c2n_p modparm(11) = ( xthetazmi + xthetazme ) / 2.0 ! c2n_z modparm(12) = xthetad ! c2n_d modparm(13) = 0.01 ! graze_threshold modparm(14) = 2.0 ! holling_coef modparm(15) = 0.5 ! graze_sat modparm(16) = 2.0 ! graze_max ! Set up assimilation parameters to be passed into balancing routine ! Not sure what assimparm(1) is meant to be, but it doesn't get used assimparm(2) = balnutext assimparm(3) = balnutmin assimparm(4) = r assimparm(5) = beta_g assimparm(6) = beta_l assimparm(7) = beta_m assimparm(8) = a_g assimparm(9) = a_l assimparm(10) = a_m assimparm(11) = zfracb0 assimparm(12) = zfracb1 assimparm(13) = qrfmax assimparm(14) = qafmax assimparm(15) = zrfmax assimparm(16) = zafmax assimparm(17) = prfmax assimparm(18) = incphymin assimparm(19) = integnstep assimparm(20) = pthreshold ! Set up external tracer indices array bstate i_tracer(1) = 1 ! nutrient i_tracer(2) = 2 ! phytoplankton i_tracer(3) = 3 ! zooplankton i_tracer(4) = 4 ! detritus i_tracer(5) = 5 ! DIC i_tracer(6) = 6 ! Alkalinity ! Set background state bstate_3d(:,:,:,i_tracer(1)) = tracer_bkg(:,:,:,jpdin) bstate_3d(:,:,:,i_tracer(2)) = tracer_bkg(:,:,:,jpphn) + tracer_bkg(:,:,:,jpphd) bstate_3d(:,:,:,i_tracer(3)) = tracer_bkg(:,:,:,jpzmi) + tracer_bkg(:,:,:,jpzme) bstate_3d(:,:,:,i_tracer(4)) = tracer_bkg(:,:,:,jpdet) bstate_3d(:,:,:,i_tracer(5)) = tracer_bkg(:,:,:,jpdic) bstate_3d(:,:,:,i_tracer(6)) = tracer_bkg(:,:,:,jpalk) ! Calculate carbon to chlorophyll ratio for combined phytoplankton ! and nitrogen to biomass equivalent for PZD ! Hardwire nitrogen mass to 14.01 for now as it doesn't seem to be set in MEDUSA cchl_p_3d(:,:,:) = 0.0 DO jk = 1, jpk DO jj = 1, jpj DO ji = 1, jpi IF ( ( tracer_bkg(ji,jj,jk,jpchn) + tracer_bkg(ji,jj,jk,jpchd ) ) .GT. 0.0 ) THEN cchl_p_3d(ji,jj,jk) = xmassc * ( ( tracer_bkg(ji,jj,jk,jpphn) * xthetapn ) + & & ( tracer_bkg(ji,jj,jk,jpphd) * xthetapd ) ) / & & ( tracer_bkg(ji,jj,jk,jpchn) + tracer_bkg(ji,jj,jk,jpchd ) ) ENDIF END DO END DO END DO n2be_p = 14.01 + ( xmassc * ( ( xthetapn + xthetapd ) / 2.0 ) ) n2be_z = 14.01 + ( xmassc * ( ( xthetazmi + xthetazme ) / 2.0 ) ) n2be_d = 14.01 + ( xmassc * xthetad ) ! Call nitrogen balancing routine IF (kdeps == 1) THEN pinc_chltot_2d(:,:) = pinc_chltot_3d(:,:,1) cchl_p_2d(:,:) = cchl_p_3d(:,:,1) phyt_avg_bkg_2d(:,:) = phyt_avg_bkg_3d(:,:,1) pgrow_avg_bkg_2d(:,:) = pgrow_avg_bkg_3d(:,:,1) ploss_avg_bkg_2d(:,:) = ploss_avg_bkg_3d(:,:,1) CALL bio_analysis( jpi, jpj, jpk, gdepw_n(:,:,2:jpk), i_tracer, modparm, & & n2be_p, n2be_z, n2be_d, assimparm, & & INT(pincper), 1, INT(SUM(tmask,3)), tmask(:,:,:), & & pmld(:,:), mld_max_bkg(:,:), pinc_chltot_2d(:,:), cchl_p_2d(:,:), & & nbal_active, phyt_avg_bkg_2d(:,:), & & gl_active, pgrow_avg_bkg_2d(:,:), ploss_avg_bkg_2d(:,:), & & subsurf_active, deepneg_active, & & deeppos_active, nutprof_active, & & bstate_3d, outincs_3d, & & diag_active, diag, & & diag_fulldepth_active, diag_fulldepth_3d ) ELSE pmld(:,:) = 0.5 DO jk = 1, kdeps pinc_chltot_2d(:,:) = pinc_chltot_3d(:,:,jk) cchl_p_2d(:,:) = cchl_p_3d(:,:,jk) phyt_avg_bkg_2d(:,:) = phyt_avg_bkg_3d(:,:,jk) pgrow_avg_bkg_2d(:,:) = pgrow_avg_bkg_3d(:,:,jk) ploss_avg_bkg_2d(:,:) = ploss_avg_bkg_3d(:,:,jk) tmask_2d(:,:,1) = tmask(:,:,jk) bstate_2d(:,:,1,:) = bstate_3d(:,:,jk,:) outincs_2d(:,:,:,:) = 0.0 CALL bio_analysis( jpi, jpj, 1, gdepw_n(:,:,2), i_tracer, modparm, & & n2be_p, n2be_z, n2be_d, assimparm, & & INT(pincper), 1, INT(SUM(tmask_2d,3)), tmask_2d(:,:,:), & & pmld(:,:), pmld(:,:), pinc_chltot_2d(:,:), cchl_p_2d(:,:), & & nbal_active, phyt_avg_bkg_2d(:,:), & & gl_active, pgrow_avg_bkg_2d(:,:), ploss_avg_bkg_2d(:,:), & & subsurf_active, deepneg_active, & & deeppos_active, nutprof_active, & & bstate_2d, outincs_2d, & & diag_active, diag, & & diag_fulldepth_active, diag_fulldepth_2d ) outincs_3d(:,:,jk,:) = outincs_2d(:,:,1,:) END DO ENDIF ! Loop over each grid point partioning the increments phyto_balinc(:,:,:,:) = 0.0 DO jk = 1, jpk IF (kdeps == 1) THEN jkinc = 1 ELSE IF (jk > kdeps) THEN EXIT ENDIF jkinc = jk ENDIF DO jj = 1, jpj DO ji = 1, jpi ! Phytoplankton IF ( ( tracer_bkg(ji,jj,jk,jpphn) > 0.0 ) .AND. & & ( tracer_bkg(ji,jj,jk,jpphd) > 0.0 ) .AND. & & ( pinc_chltot_3d(ji,jj,jkinc) /= 0.0 ) ) THEN IF ( ld_chltot ) THEN ! Phytoplankton nitrogen split up based on existing ratios zfrac_phn = tracer_bkg(ji,jj,jk,jpphn) / & & (tracer_bkg(ji,jj,jk,jpphn) + tracer_bkg(ji,jj,jk,jpphd)) zfrac_phd = tracer_bkg(ji,jj,jk,jpphd) / & & (tracer_bkg(ji,jj,jk,jpphn) + tracer_bkg(ji,jj,jk,jpphd)) ELSE IF ( ld_chldia .AND. ld_chlnon ) THEN ! Phytoplankton nitrogen split up based on assimilation increments zfrac_phn = pinc_chlnon_3d(ji,jj,jkinc) / pinc_chltot_3d(ji,jj,jkinc) zfrac_phd = pinc_chldia_3d(ji,jj,jkinc) / pinc_chltot_3d(ji,jj,jkinc) ENDIF ! Phytoplankton silicate split up based on existing ratios zrat_pds_phd = tracer_bkg(ji,jj,jk,jppds) / tracer_bkg(ji,jj,jk,jpphd) ! Chlorophyll split up based on existing ratios to phytoplankton nitrogen ! Not using pinc_chltot directly as it's only 2D ! This method should give same results at surface as splitting pinc_chltot would zrat_chn_phn = tracer_bkg(ji,jj,jk,jpchn) / tracer_bkg(ji,jj,jk,jpphn) zrat_chd_phd = tracer_bkg(ji,jj,jk,jpchd) / tracer_bkg(ji,jj,jk,jpphd) phyto_balinc(ji,jj,jk,jpphn) = outincs_3d(ji,jj,jk,i_tracer(2)) * zfrac_phn phyto_balinc(ji,jj,jk,jpphd) = outincs_3d(ji,jj,jk,i_tracer(2)) * zfrac_phd phyto_balinc(ji,jj,jk,jppds) = phyto_balinc(ji,jj,jk,jpphd) * zrat_pds_phd phyto_balinc(ji,jj,jk,jpchn) = phyto_balinc(ji,jj,jk,jpphn) * zrat_chn_phn phyto_balinc(ji,jj,jk,jpchd) = phyto_balinc(ji,jj,jk,jpphd) * zrat_chd_phd ENDIF ! Zooplankton nitrogen split up based on existing ratios IF ( ( tracer_bkg(ji,jj,jk,jpzmi) > 0.0 ) .AND. ( tracer_bkg(ji,jj,jk,jpzme) > 0.0 ) ) THEN zfrac_zmi = tracer_bkg(ji,jj,jk,jpzmi) / & & (tracer_bkg(ji,jj,jk,jpzmi) + tracer_bkg(ji,jj,jk,jpzme)) zfrac_zme = tracer_bkg(ji,jj,jk,jpzme) / & & (tracer_bkg(ji,jj,jk,jpzmi) + tracer_bkg(ji,jj,jk,jpzme)) phyto_balinc(ji,jj,jk,jpzmi) = outincs_3d(ji,jj,jk,i_tracer(3)) * zfrac_zmi phyto_balinc(ji,jj,jk,jpzme) = outincs_3d(ji,jj,jk,i_tracer(3)) * zfrac_zme ENDIF ! Nitrogen nutrient straight from balancing scheme phyto_balinc(ji,jj,jk,jpdin) = outincs_3d(ji,jj,jk,i_tracer(1)) ! Nitrogen detritus straight from balancing scheme phyto_balinc(ji,jj,jk,jpdet) = outincs_3d(ji,jj,jk,i_tracer(4)) ! DIC straight from balancing scheme phyto_balinc(ji,jj,jk,jpdic) = outincs_3d(ji,jj,jk,i_tracer(5)) ! Alkalinity straight from balancing scheme phyto_balinc(ji,jj,jk,jpalk) = outincs_3d(ji,jj,jk,i_tracer(6)) ! Remove diatom silicate increment from nutrient silicate to conserve mass IF ( ( tracer_bkg(ji,jj,jk,jpsil) - phyto_balinc(ji,jj,jk,jppds) ) > 0.0 ) THEN phyto_balinc(ji,jj,jk,jpsil) = phyto_balinc(ji,jj,jk,jppds) * (-1.0) ENDIF ! Carbon detritus based on existing ratios IF ( ( tracer_bkg(ji,jj,jk,jpdet) > 0.0 ) .AND. ( tracer_bkg(ji,jj,jk,jpdtc) > 0.0 ) ) THEN zrat_dtc_det = tracer_bkg(ji,jj,jk,jpdtc) / tracer_bkg(ji,jj,jk,jpdet) phyto_balinc(ji,jj,jk,jpdtc) = phyto_balinc(ji,jj,jk,jpdet) * zrat_dtc_det ENDIF ! Do nothing with iron or oxygen for the time being phyto_balinc(ji,jj,jk,jpfer) = 0.0 phyto_balinc(ji,jj,jk,jpoxy) = 0.0 END DO END DO END DO ELSE ! No nitrogen balancing ! Initialise individual chlorophyll increments to zero phyto_balinc(:,:,:,jpchn) = 0.0 phyto_balinc(:,:,:,jpchd) = 0.0 ! Split up total surface chlorophyll increments DO jk = 1, kdeps DO jj = 1, jpj DO ji = 1, jpi IF ( ( tracer_bkg(ji,jj,jk,jpchn) > 0.0 ) .AND. & & ( tracer_bkg(ji,jj,jk,jpchd) > 0.0 ) ) THEN IF ( ld_chltot ) THEN ! Chlorophyll split up based on existing ratios zfrac_chn = tracer_bkg(ji,jj,jk,jpchn) / & & ( tracer_bkg(ji,jj,jk,jpchn) + tracer_bkg(ji,jj,jk,jpchd) ) zfrac_chd = tracer_bkg(ji,jj,jk,jpchd) / & & ( tracer_bkg(ji,jj,jk,jpchn) + tracer_bkg(ji,jj,jk,jpchd) ) phyto_balinc(ji,jj,jk,jpchn) = pinc_chltot_3d(ji,jj,jk) * zfrac_chn phyto_balinc(ji,jj,jk,jpchd) = pinc_chltot_3d(ji,jj,jk) * zfrac_chd ENDIF IF( ld_chldia ) THEN phyto_balinc(ji,jj,jk,jpchd) = pinc_chldia_3d(ji,jj,jk) ENDIF IF( ld_chlnon ) THEN phyto_balinc(ji,jj,jk,jpchn) = pinc_chlnon_3d(ji,jj,jk) ENDIF ! Maintain stoichiometric ratios of nitrogen and silicate IF ( ld_chltot .OR. ld_chlnon ) THEN zrat_phn_chn = tracer_bkg(ji,jj,jk,jpphn) / tracer_bkg(ji,jj,jk,jpchn) phyto_balinc(ji,jj,jk,jpphn) = phyto_balinc(ji,jj,jk,jpchn) * zrat_phn_chn ENDIF IF ( ld_chltot .OR. ld_chldia ) THEN zrat_phd_chd = tracer_bkg(ji,jj,jk,jpphd) / tracer_bkg(ji,jj,jk,jpchd) phyto_balinc(ji,jj,jk,jpphd) = phyto_balinc(ji,jj,jk,jpchd) * zrat_phd_chd zrat_pds_chd = tracer_bkg(ji,jj,jk,jppds) / tracer_bkg(ji,jj,jk,jpchd) phyto_balinc(ji,jj,jk,jppds) = phyto_balinc(ji,jj,jk,jpchd) * zrat_pds_chd ENDIF ENDIF END DO END DO END DO IF (kdeps == 1) THEN ! Propagate through mixed layer DO jj = 1, jpj DO ji = 1, jpi ! jkmax = jpk-1 DO jk = jpk-1, 1, -1 IF ( ( pmld(ji,jj) > gdepw_n(ji,jj,jk) ) .AND. & & ( pmld(ji,jj) <= gdepw_n(ji,jj,jk+1) ) ) THEN pmld(ji,jj) = gdepw_n(ji,jj,jk+1) jkmax = jk ENDIF END DO ! DO jk = 2, jkmax phyto_balinc(ji,jj,jk,jpchn) = phyto_balinc(ji,jj,1,jpchn) phyto_balinc(ji,jj,jk,jpchd) = phyto_balinc(ji,jj,1,jpchd) phyto_balinc(ji,jj,jk,jpphn) = phyto_balinc(ji,jj,1,jpphn) phyto_balinc(ji,jj,jk,jpphd) = phyto_balinc(ji,jj,1,jpphd) phyto_balinc(ji,jj,jk,jppds) = phyto_balinc(ji,jj,1,jppds) END DO ! END DO END DO ENDIF ! Set other balancing increments to zero phyto_balinc(:,:,:,jpzmi) = 0.0 phyto_balinc(:,:,:,jpzme) = 0.0 phyto_balinc(:,:,:,jpdin) = 0.0 phyto_balinc(:,:,:,jpsil) = 0.0 phyto_balinc(:,:,:,jpfer) = 0.0 phyto_balinc(:,:,:,jpdet) = 0.0 phyto_balinc(:,:,:,jpdtc) = 0.0 phyto_balinc(:,:,:,jpdic) = 0.0 phyto_balinc(:,:,:,jpalk) = 0.0 phyto_balinc(:,:,:,jpoxy) = 0.0 ENDIF ! If performing extra tidal mixing in the Indonesian Throughflow, ! increments have been found to make the carbon cycle unstable ! Therefore, mask these out IF ( ln_tmx_itf ) THEN DO jn = 1, jptra DO jk = 1, jpk phyto_balinc(:,:,jk,jn) = phyto_balinc(:,:,jk,jn) * ( 1.0 - mask_itf(:,:) ) END DO END DO ENDIF END SUBROUTINE asm_phyto_bal_medusa #else !!---------------------------------------------------------------------- !! Default option : Empty routine !!---------------------------------------------------------------------- CONTAINS SUBROUTINE asm_phyto_bal_medusa( kdeps, & & ld_chltot, & & pinc_chltot_3d, & & ld_chldia, & & pinc_chldia_3d, & & ld_chlnon, & & pinc_chlnon_3d, & & ld_phytot, & & pinc_phytot_3d, & & ld_phydia, & & pinc_phydia_3d, & & ld_phynon, & & pinc_phynon_3d, & & pincper, & & p_maxchlinc, ld_phytobal, pmld, & & pgrow_avg_bkg_3d, ploss_avg_bkg_3d, & & phyt_avg_bkg_3d, mld_max_bkg, & & tracer_bkg, phyto_balinc ) INTEGER :: kdeps LOGICAL :: ld_chltot REAL :: pinc_chltot_3d(:,:,:) LOGICAL :: ld_chldia REAL :: pinc_chldia_3d(:,:,:) LOGICAL :: ld_chlnon REAL :: pinc_chlnon_3d(:,:,:) LOGICAL :: ld_phytot REAL :: pinc_phytot_3d(:,:,:) LOGICAL :: ld_phydia REAL :: pinc_phydia_3d(:,:,:) LOGICAL :: ld_phynon REAL :: pinc_phynon_3d(:,:,:) REAL :: pincper REAL :: p_maxchlinc LOGICAL :: ld_phytobal REAL :: pmld(:,:) REAL :: pgrow_avg_bkg_3d(:,:,:) REAL :: ploss_avg_bkg_3d(:,:,:) REAL :: phyt_avg_bkg_3d(:,:,:) REAL :: mld_max_bkg(:,:) REAL :: tracer_bkg(:,:,:,:) REAL :: phyto_balinc(:,:,:,:) WRITE(*,*) 'asm_phyto_bal_medusa: You should not have seen this print! error?' END SUBROUTINE asm_phyto_bal_medusa #endif !!====================================================================== END MODULE asmphytobal_medusa