| 1 | MODULE asmphyto2dbal_medusa |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE asmphyto2dbal_medusa *** |
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| 4 | !! Calculate increments to MEDUSA based on surface phyto2d increments |
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| 5 | !! |
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| 6 | !! IMPORTANT NOTE: This calls the bioanalysis routine of Hemmings et al. |
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| 7 | !! For licensing reasons this is kept in its own internal Met Office |
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| 8 | !! branch (dev/frdf/vn3.6_nitrogen_balancing) rather than in the Paris |
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| 9 | !! repository, and must be merged in when building. |
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| 10 | !! |
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| 11 | !!====================================================================== |
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| 12 | !! History : 3.6 ! 2017-08 (D. Ford) Adapted from asmphyto2dbal_hadocc |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | #if defined key_asminc && defined key_medusa |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | !! 'key_asminc' : assimilation increment interface |
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| 17 | !! 'key_medusa' : MEDUSA model |
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| 18 | !!---------------------------------------------------------------------- |
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| 19 | !! asm_phyto2d_bal_medusa : routine to calculate increments to MEDUSA |
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| 20 | !!---------------------------------------------------------------------- |
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| 21 | USE par_kind, ONLY: wp ! kind parameters |
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| 22 | USE par_oce, ONLY: jpi, jpj, jpk ! domain array sizes |
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| 23 | USE dom_oce, ONLY: gdepw_n ! domain information |
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| 24 | USE zdftmx, ONLY: ln_tmx_itf, & ! Indonesian Throughflow |
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| 25 | & mask_itf ! tidal mixing mask |
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| 26 | USE iom ! i/o |
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| 27 | USE sms_medusa ! MEDUSA parameters |
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| 28 | USE par_medusa ! MEDUSA parameters |
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| 29 | USE par_trc, ONLY: jptra ! Tracer parameters |
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| 30 | USE bioanalysis ! Nitrogen balancing |
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| 31 | |
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| 32 | IMPLICIT NONE |
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| 33 | PRIVATE |
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| 34 | |
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| 35 | PUBLIC asm_phyto2d_bal_medusa |
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| 36 | |
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| 37 | ! Default values for biological assimilation parameters |
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| 38 | ! Should match Hemmings et al. (2008) |
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| 39 | REAL(wp), PARAMETER :: balnutext = 0.6 !: Default nutrient balancing factor |
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| 40 | REAL(wp), PARAMETER :: balnutmin = 0.1 !: Fraction of phytoplankton loss to nutrient |
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| 41 | REAL(wp), PARAMETER :: r = 1 !: Reliability of model specific growth rate |
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| 42 | REAL(wp), PARAMETER :: beta_g = 0.05 !: Low rate bias correction for growth rate estimator |
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| 43 | REAL(wp), PARAMETER :: beta_l = 0.05 !: Low rate bias correction for primary loss rate estimator |
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| 44 | REAL(wp), PARAMETER :: beta_m = 0.05 !: Low rate bias correction for secondary loss rate estimator |
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| 45 | REAL(wp), PARAMETER :: a_g = 0.2 !: Error s.d. for log10 of growth rate estimator |
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| 46 | REAL(wp), PARAMETER :: a_l = 0.4 !: Error s.d. for log10 of primary loss rate estimator |
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| 47 | REAL(wp), PARAMETER :: a_m = 0.7 !: Error s.d. for log10 of secondary loss rate estimator |
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| 48 | REAL(wp), PARAMETER :: zfracb0 = 0.7 !: Base zooplankton fraction of loss to Z & D |
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| 49 | REAL(wp), PARAMETER :: zfracb1 = 0 !: Phytoplankton sensitivity of zooplankton fraction |
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| 50 | REAL(wp), PARAMETER :: qrfmax = 1.1 !: Maximum nutrient limitation reduction factor |
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| 51 | REAL(wp), PARAMETER :: qafmax = 1.1 !: Maximum nutrient limitation amplification factor |
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| 52 | REAL(wp), PARAMETER :: zrfmax = 2 !: Maximum zooplankton reduction factor |
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| 53 | REAL(wp), PARAMETER :: zafmax = 2 !: Maximum zooplankton amplification factor |
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| 54 | REAL(wp), PARAMETER :: prfmax = 10 !: Maximum phytoplankton reduction factor (secondary) |
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| 55 | REAL(wp), PARAMETER :: incphymin = 0.0001 !: Minimum size of non-zero phytoplankton increment |
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| 56 | REAL(wp), PARAMETER :: integnstep = 20 !: Number of steps for p.d.f. integral evaluation |
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| 57 | REAL(wp), PARAMETER :: pthreshold = 0.01 !: Fractional threshold level for setting p.d.f. |
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| 58 | ! |
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| 59 | LOGICAL, PARAMETER :: diag_active = .TRUE. !: Depth-independent diagnostics |
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| 60 | LOGICAL, PARAMETER :: diag_fulldepth_active = .TRUE. !: Full-depth diagnostics |
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| 61 | LOGICAL, PARAMETER :: gl_active = .TRUE. !: Growth/loss-based balancing |
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| 62 | LOGICAL, PARAMETER :: nbal_active = .TRUE. !: Nitrogen balancing |
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| 63 | LOGICAL, PARAMETER :: subsurf_active = .TRUE. !: Increments below MLD |
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| 64 | LOGICAL, PARAMETER :: deepneg_active = .FALSE. !: Negative primary increments below MLD |
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| 65 | LOGICAL, PARAMETER :: deeppos_active = .FALSE. !: Positive primary increments below MLD |
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| 66 | LOGICAL, PARAMETER :: nutprof_active = .TRUE. !: Secondary increments |
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| 67 | |
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| 68 | CONTAINS |
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| 69 | |
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| 70 | SUBROUTINE asm_phyto2d_bal_medusa( ld_chltot, & |
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| 71 | & pinc_chltot, & |
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| 72 | & ld_chldia, & |
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| 73 | & pinc_chldia, & |
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| 74 | & ld_chlnon, & |
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| 75 | & pinc_chlnon, & |
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| 76 | & ld_phytot, & |
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| 77 | & pinc_phytot, & |
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| 78 | & ld_phydia, & |
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| 79 | & pinc_phydia, & |
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| 80 | & ld_phynon, & |
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| 81 | & pinc_phynon, & |
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| 82 | & pincper, & |
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| 83 | & p_maxchlinc, ld_phytobal, pmld, & |
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| 84 | & pgrow_avg_bkg, ploss_avg_bkg, & |
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| 85 | & phyt_avg_bkg, mld_max_bkg, & |
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| 86 | & tracer_bkg, phyto2d_balinc ) |
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| 87 | !!--------------------------------------------------------------------------- |
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| 88 | !! *** ROUTINE asm_phyto2d_bal_medusa *** |
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| 89 | !! |
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| 90 | !! ** Purpose : calculate increments to MEDUSA from 2d phytoplankton increments |
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| 91 | !! |
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| 92 | !! ** Method : average up MEDUSA to look like HadOCC |
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| 93 | !! call nitrogen balancing scheme |
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| 94 | !! separate back out to MEDUSA |
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| 95 | !! |
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| 96 | !! ** Action : populate phyto2d_balinc |
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| 97 | !! |
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| 98 | !! References : Hemmings et al., 2008, J. Mar. Res. |
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| 99 | !! Ford et al., 2012, Ocean Sci. |
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| 100 | !!--------------------------------------------------------------------------- |
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| 101 | !! |
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| 102 | LOGICAL, INTENT(in ) :: ld_chltot ! Assim chltot y/n |
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| 103 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pinc_chltot ! chltot increments |
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| 104 | LOGICAL, INTENT(in ) :: ld_chldia ! Assim chldia y/n |
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| 105 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pinc_chldia ! chldia increments |
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| 106 | LOGICAL, INTENT(in ) :: ld_chlnon ! Assim chlnon y/n |
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| 107 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pinc_chlnon ! chlnon increments |
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| 108 | LOGICAL, INTENT(in ) :: ld_phytot ! Assim phytot y/n |
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| 109 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pinc_phytot ! phytot increments |
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| 110 | LOGICAL, INTENT(in ) :: ld_phydia ! Assim phydia y/n |
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| 111 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pinc_phydia ! phydia increments |
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| 112 | LOGICAL, INTENT(in ) :: ld_phynon ! Assim phynon y/n |
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| 113 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pinc_phynon ! phynon increments |
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| 114 | REAL(wp), INTENT(in ) :: pincper ! Assimilation period |
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| 115 | REAL(wp), INTENT(in ) :: p_maxchlinc ! Max chl increment |
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| 116 | LOGICAL, INTENT(in ) :: ld_phytobal ! Balancing y/n |
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| 117 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pmld ! Mixed layer depth |
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| 118 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: pgrow_avg_bkg ! Avg phyto growth |
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| 119 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: ploss_avg_bkg ! Avg phyto loss |
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| 120 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: phyt_avg_bkg ! Avg phyto |
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| 121 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: mld_max_bkg ! Max MLD |
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| 122 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj,jpk,jptra) :: tracer_bkg ! State variables |
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| 123 | REAL(wp), INTENT( out), DIMENSION(jpi,jpj,jpk,jptra) :: phyto2d_balinc ! Balancing increments |
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| 124 | !! |
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| 125 | INTEGER :: ji, jj, jk, jn ! Loop counters |
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| 126 | INTEGER :: jkmax ! Loop index |
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| 127 | INTEGER, DIMENSION(6) :: i_tracer ! Tracer indices |
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| 128 | REAL(wp) :: n2be_p ! N:biomass for total phy |
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| 129 | REAL(wp) :: n2be_z ! N:biomass for total zoo |
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| 130 | REAL(wp) :: n2be_d ! N:biomass for detritus |
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| 131 | REAL(wp) :: zfrac ! Fraction |
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| 132 | REAL(wp) :: zfrac_chn ! Fraction of jpchn |
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| 133 | REAL(wp) :: zfrac_chd ! Fraction of jpchd |
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| 134 | REAL(wp) :: zfrac_phn ! Fraction of jpphn |
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| 135 | REAL(wp) :: zfrac_phd ! Fraction of jpphd |
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| 136 | REAL(wp) :: zfrac_zmi ! Fraction of jpzmi |
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| 137 | REAL(wp) :: zfrac_zme ! Fraction of jpzme |
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| 138 | REAL(wp) :: zrat_pds_phd ! Ratio of jppds:jpphd |
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| 139 | REAL(wp) :: zrat_chd_phd ! Ratio of jpchd:jpphd |
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| 140 | REAL(wp) :: zrat_chn_phn ! Ratio of jpchn:jpphn |
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| 141 | REAL(wp) :: zrat_phn_chn ! Ratio of jpphn:jpchn |
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| 142 | REAL(wp) :: zrat_phd_chd ! Ratio of jpphd:jpchd |
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| 143 | REAL(wp) :: zrat_pds_chd ! Ratio of jppds:jpchd |
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| 144 | REAL(wp) :: zrat_dtc_det ! Ratio of jpdtc:jpdet |
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| 145 | REAL(wp), DIMENSION(jpi,jpj) :: cchl_p ! C:Chl for total phy |
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| 146 | REAL(wp), DIMENSION(16) :: modparm ! Model parameters |
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| 147 | REAL(wp), DIMENSION(20) :: assimparm ! Assimilation parameters |
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| 148 | REAL(wp), DIMENSION(jpi,jpj,jpk,6) :: bstate ! Background state |
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| 149 | REAL(wp), DIMENSION(jpi,jpj,jpk,6) :: outincs ! Balancing increments |
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| 150 | REAL(wp), DIMENSION(jpi,jpj,22) :: diag ! Depth-indep diagnostics |
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| 151 | REAL(wp), DIMENSION(jpi,jpj,jpk,22) :: diag_fulldepth ! Full-depth diagnostics |
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| 152 | !!--------------------------------------------------------------------------- |
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| 153 | |
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| 154 | ! If p_maxchlinc > 0 then cap total absolute chlorophyll increment at that value |
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| 155 | IF ( p_maxchlinc > 0.0 ) THEN |
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| 156 | IF ( ld_chltot ) THEN |
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| 157 | DO jj = 1, jpj |
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| 158 | DO ji = 1, jpi |
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| 159 | pinc_chltot(ji,jj) = MAX( -1.0 * p_maxchlinc, MIN( pinc_chltot(ji,jj), p_maxchlinc ) ) |
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| 160 | END DO |
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| 161 | END DO |
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| 162 | ELSE IF ( ld_chldia .AND. ld_chlnon ) THEN |
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| 163 | DO jj = 1, jpj |
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| 164 | DO ji = 1, jpi |
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| 165 | pinc_chltot(ji,jj) = pinc_chldia(ji,jj) + pinc_chlnon(ji,jj) |
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| 166 | pinc_chltot(ji,jj) = MAX( -1.0 * p_maxchlinc, MIN( pinc_chltot(ji,jj), p_maxchlinc ) ) |
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| 167 | IF ( pinc_chltot(ji,jj) .NE. ( pinc_chldia(ji,jj) + pinc_chlnon(ji,jj) ) ) THEN |
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| 168 | zfrac = pinc_chltot(ji,jj) / ( pinc_chldia(ji,jj) + pinc_chlnon(ji,jj) ) |
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| 169 | pinc_chldia(ji,jj) = pinc_chldia(ji,jj) * zfrac |
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| 170 | pinc_chlnon(ji,jj) = pinc_chlnon(ji,jj) * zfrac |
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| 171 | ENDIF |
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| 172 | END DO |
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| 173 | END DO |
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| 174 | ELSE IF ( ld_chldia ) THEN |
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| 175 | DO jj = 1, jpj |
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| 176 | DO ji = 1, jpi |
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| 177 | pinc_chldia(ji,jj) = MAX( -1.0 * p_maxchlinc, MIN( pinc_chldia(ji,jj), p_maxchlinc ) ) |
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| 178 | pinc_chltot(ji,jj) = pinc_chldia(ji,jj) |
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| 179 | END DO |
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| 180 | END DO |
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| 181 | ELSE IF ( ld_chlnon ) THEN |
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| 182 | DO jj = 1, jpj |
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| 183 | DO ji = 1, jpi |
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| 184 | pinc_chlnon(ji,jj) = MAX( -1.0 * p_maxchlinc, MIN( pinc_chlnon(ji,jj), p_maxchlinc ) ) |
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| 185 | pinc_chltot(ji,jj) = pinc_chlnon(ji,jj) |
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| 186 | END DO |
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| 187 | END DO |
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| 188 | ENDIF |
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| 189 | ENDIF |
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| 190 | |
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| 191 | IF ( ld_phytot .OR. ld_phydia .OR. ld_phynon ) THEN |
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| 192 | CALL ctl_stop( ' No phytoplankton carbon assimilation quite yet' ) |
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| 193 | ENDIF |
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| 194 | |
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| 195 | IF ( ld_phytobal ) THEN ! Nitrogen balancing |
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| 196 | |
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| 197 | ! Set up model parameters to be passed into Hemmings balancing routine. |
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| 198 | ! For now these are hardwired to the standard HadOCC parameter values |
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| 199 | ! (except C:N ratios) as this is what the scheme was developed for. |
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| 200 | ! Obviously, HadOCC and MEDUSA are rather different models, so this |
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| 201 | ! isn't ideal, but there's not always direct analogues between the two |
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| 202 | ! parameter sets, so it's the easiest way to get something running. |
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| 203 | ! In the longer term, some serious MarMOT-based development is required. |
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| 204 | modparm(1) = 0.1 ! grow_sat |
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| 205 | modparm(2) = 2.0 ! psmax |
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| 206 | modparm(3) = 0.845 ! par |
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| 207 | modparm(4) = 0.02 ! alpha |
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| 208 | modparm(5) = 0.05 ! resp_rate |
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| 209 | modparm(6) = 0.05 ! pmort_rate |
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| 210 | modparm(7) = 0.01 ! phyto_min |
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| 211 | modparm(8) = 0.05 ! z_mort_1 |
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| 212 | modparm(9) = 1.0 ! z_mort_2 |
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| 213 | modparm(10) = ( xthetapn + xthetapd ) / 2.0 ! c2n_p |
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| 214 | modparm(11) = ( xthetazmi + xthetazme ) / 2.0 ! c2n_z |
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| 215 | modparm(12) = xthetad ! c2n_d |
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| 216 | modparm(13) = 0.01 ! graze_threshold |
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| 217 | modparm(14) = 2.0 ! holling_coef |
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| 218 | modparm(15) = 0.5 ! graze_sat |
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| 219 | modparm(16) = 2.0 ! graze_max |
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| 220 | |
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| 221 | ! Set up assimilation parameters to be passed into balancing routine |
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| 222 | ! Not sure what assimparm(1) is meant to be, but it doesn't get used |
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| 223 | assimparm(2) = balnutext |
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| 224 | assimparm(3) = balnutmin |
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| 225 | assimparm(4) = r |
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| 226 | assimparm(5) = beta_g |
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| 227 | assimparm(6) = beta_l |
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| 228 | assimparm(7) = beta_m |
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| 229 | assimparm(8) = a_g |
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| 230 | assimparm(9) = a_l |
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| 231 | assimparm(10) = a_m |
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| 232 | assimparm(11) = zfracb0 |
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| 233 | assimparm(12) = zfracb1 |
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| 234 | assimparm(13) = qrfmax |
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| 235 | assimparm(14) = qafmax |
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| 236 | assimparm(15) = zrfmax |
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| 237 | assimparm(16) = zafmax |
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| 238 | assimparm(17) = prfmax |
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| 239 | assimparm(18) = incphymin |
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| 240 | assimparm(19) = integnstep |
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| 241 | assimparm(20) = pthreshold |
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| 242 | |
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| 243 | ! Set up external tracer indices array bstate |
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| 244 | i_tracer(1) = 1 ! nutrient |
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| 245 | i_tracer(2) = 2 ! phytoplankton |
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| 246 | i_tracer(3) = 3 ! zooplankton |
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| 247 | i_tracer(4) = 4 ! detritus |
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| 248 | i_tracer(5) = 5 ! DIC |
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| 249 | i_tracer(6) = 6 ! Alkalinity |
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| 250 | |
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| 251 | ! Set background state |
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| 252 | bstate(:,:,:,i_tracer(1)) = tracer_bkg(:,:,:,jpdin) |
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| 253 | bstate(:,:,:,i_tracer(2)) = tracer_bkg(:,:,:,jpphn) + tracer_bkg(:,:,:,jpphd) |
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| 254 | bstate(:,:,:,i_tracer(3)) = tracer_bkg(:,:,:,jpzmi) + tracer_bkg(:,:,:,jpzme) |
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| 255 | bstate(:,:,:,i_tracer(4)) = tracer_bkg(:,:,:,jpdet) |
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| 256 | bstate(:,:,:,i_tracer(5)) = tracer_bkg(:,:,:,jpdic) |
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| 257 | bstate(:,:,:,i_tracer(6)) = tracer_bkg(:,:,:,jpalk) |
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| 258 | |
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| 259 | ! Calculate carbon to chlorophyll ratio for combined phytoplankton |
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| 260 | ! and nitrogen to biomass equivalent for PZD |
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| 261 | ! Hardwire nitrogen mass to 14.01 for now as it doesn't seem to be set in MEDUSA |
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| 262 | cchl_p(:,:) = 0.0 |
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| 263 | DO jj = 1, jpj |
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| 264 | DO ji = 1, jpi |
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| 265 | IF ( ( tracer_bkg(ji,jj,1,jpchn) + tracer_bkg(ji,jj,1,jpchd ) ) .GT. 0.0 ) THEN |
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| 266 | cchl_p(ji,jj) = xmassc * ( ( tracer_bkg(ji,jj,1,jpphn) * xthetapn ) + & |
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| 267 | & ( tracer_bkg(ji,jj,1,jpphd) * xthetapd ) ) / & |
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| 268 | & ( tracer_bkg(ji,jj,1,jpchn) + tracer_bkg(ji,jj,1,jpchd ) ) |
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| 269 | ENDIF |
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| 270 | END DO |
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| 271 | END DO |
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| 272 | n2be_p = 14.01 + ( xmassc * ( ( xthetapn + xthetapd ) / 2.0 ) ) |
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| 273 | n2be_z = 14.01 + ( xmassc * ( ( xthetazmi + xthetazme ) / 2.0 ) ) |
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| 274 | n2be_d = 14.01 + ( xmassc * xthetad ) |
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| 275 | |
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| 276 | ! Call nitrogen balancing routine |
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| 277 | CALL bio_analysis( jpi, jpj, jpk, gdepw_n(:,:,2:jpk), i_tracer, modparm, & |
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| 278 | & n2be_p, n2be_z, n2be_d, assimparm, & |
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| 279 | & INT(pincper), 1, INT(SUM(tmask,3)), tmask(:,:,:), & |
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| 280 | & pmld(:,:), mld_max_bkg(:,:), pinc_chltot(:,:), cchl_p(:,:), & |
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| 281 | & nbal_active, phyt_avg_bkg(:,:), & |
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| 282 | & gl_active, pgrow_avg_bkg(:,:), ploss_avg_bkg(:,:), & |
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| 283 | & subsurf_active, deepneg_active, & |
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| 284 | & deeppos_active, nutprof_active, & |
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| 285 | & bstate, outincs, & |
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| 286 | & diag_active, diag, & |
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| 287 | & diag_fulldepth_active, diag_fulldepth ) |
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| 288 | |
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| 289 | ! Loop over each grid point partioning the increments |
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| 290 | phyto2d_balinc(:,:,:,:) = 0.0 |
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| 291 | DO jk = 1, jpk |
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| 292 | DO jj = 1, jpj |
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| 293 | DO ji = 1, jpi |
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| 294 | |
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| 295 | ! Phytoplankton |
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| 296 | IF ( ( tracer_bkg(ji,jj,jk,jpphn) > 0.0 ) .AND. & |
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| 297 | & ( tracer_bkg(ji,jj,jk,jpphd) > 0.0 ) .AND. & |
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| 298 | & ( pinc_chltot(ji,jj) /= 0.0 ) ) THEN |
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| 299 | IF ( ld_chltot ) THEN |
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| 300 | ! Phytoplankton nitrogen split up based on existing ratios |
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| 301 | zfrac_phn = tracer_bkg(ji,jj,jk,jpphn) / & |
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| 302 | & (tracer_bkg(ji,jj,jk,jpphn) + tracer_bkg(ji,jj,jk,jpphd)) |
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| 303 | zfrac_phd = tracer_bkg(ji,jj,jk,jpphd) / & |
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| 304 | & (tracer_bkg(ji,jj,jk,jpphn) + tracer_bkg(ji,jj,jk,jpphd)) |
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| 305 | ELSE IF ( ld_chldia .AND. ld_chlnon ) THEN |
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| 306 | ! Phytoplankton nitrogen split up based on assimilation increments |
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| 307 | zfrac_phn = pinc_chlnon(ji,jj) / pinc_chltot(ji,jj) |
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| 308 | zfrac_phd = pinc_chldia(ji,jj) / pinc_chltot(ji,jj) |
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| 309 | ENDIF |
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| 310 | |
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| 311 | ! Phytoplankton silicate split up based on existing ratios |
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| 312 | zrat_pds_phd = tracer_bkg(ji,jj,jk,jppds) / tracer_bkg(ji,jj,jk,jpphd) |
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| 313 | |
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| 314 | ! Chlorophyll split up based on existing ratios to phytoplankton nitrogen |
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| 315 | ! Not using pinc_chltot directly as it's only 2D |
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| 316 | ! This method should give same results at surface as splitting pinc_chltot would |
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| 317 | zrat_chn_phn = tracer_bkg(ji,jj,jk,jpchn) / tracer_bkg(ji,jj,jk,jpphn) |
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| 318 | zrat_chd_phd = tracer_bkg(ji,jj,jk,jpchd) / tracer_bkg(ji,jj,jk,jpphd) |
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| 319 | |
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| 320 | phyto2d_balinc(ji,jj,jk,jpphn) = outincs(ji,jj,jk,i_tracer(2)) * zfrac_phn |
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| 321 | phyto2d_balinc(ji,jj,jk,jpphd) = outincs(ji,jj,jk,i_tracer(2)) * zfrac_phd |
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| 322 | phyto2d_balinc(ji,jj,jk,jppds) = phyto2d_balinc(ji,jj,jk,jpphd) * zrat_pds_phd |
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| 323 | phyto2d_balinc(ji,jj,jk,jpchn) = phyto2d_balinc(ji,jj,jk,jpphn) * zrat_chn_phn |
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| 324 | phyto2d_balinc(ji,jj,jk,jpchd) = phyto2d_balinc(ji,jj,jk,jpphd) * zrat_chd_phd |
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| 325 | ENDIF |
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| 326 | |
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| 327 | ! Zooplankton nitrogen split up based on existing ratios |
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| 328 | IF ( ( tracer_bkg(ji,jj,jk,jpzmi) > 0.0 ) .AND. ( tracer_bkg(ji,jj,jk,jpzme) > 0.0 ) ) THEN |
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| 329 | zfrac_zmi = tracer_bkg(ji,jj,jk,jpzmi) / & |
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| 330 | & (tracer_bkg(ji,jj,jk,jpzmi) + tracer_bkg(ji,jj,jk,jpzme)) |
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| 331 | zfrac_zme = tracer_bkg(ji,jj,jk,jpzme) / & |
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| 332 | & (tracer_bkg(ji,jj,jk,jpzmi) + tracer_bkg(ji,jj,jk,jpzme)) |
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| 333 | phyto2d_balinc(ji,jj,jk,jpzmi) = outincs(ji,jj,jk,i_tracer(3)) * zfrac_zmi |
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| 334 | phyto2d_balinc(ji,jj,jk,jpzme) = outincs(ji,jj,jk,i_tracer(3)) * zfrac_zme |
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| 335 | ENDIF |
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| 336 | |
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| 337 | ! Nitrogen nutrient straight from balancing scheme |
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| 338 | phyto2d_balinc(ji,jj,jk,jpdin) = outincs(ji,jj,jk,i_tracer(1)) |
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| 339 | |
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| 340 | ! Nitrogen detritus straight from balancing scheme |
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| 341 | phyto2d_balinc(ji,jj,jk,jpdet) = outincs(ji,jj,jk,i_tracer(4)) |
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| 342 | |
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| 343 | ! DIC straight from balancing scheme |
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| 344 | phyto2d_balinc(ji,jj,jk,jpdic) = outincs(ji,jj,jk,i_tracer(5)) |
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| 345 | |
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| 346 | ! Alkalinity straight from balancing scheme |
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| 347 | phyto2d_balinc(ji,jj,jk,jpalk) = outincs(ji,jj,jk,i_tracer(6)) |
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| 348 | |
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| 349 | ! Remove diatom silicate increment from nutrient silicate to conserve mass |
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| 350 | IF ( ( tracer_bkg(ji,jj,jk,jpsil) - phyto2d_balinc(ji,jj,jk,jppds) ) > 0.0 ) THEN |
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| 351 | phyto2d_balinc(ji,jj,jk,jpsil) = phyto2d_balinc(ji,jj,jk,jppds) * (-1.0) |
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| 352 | ENDIF |
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| 353 | |
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| 354 | ! Carbon detritus based on existing ratios |
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| 355 | IF ( ( tracer_bkg(ji,jj,jk,jpdet) > 0.0 ) .AND. ( tracer_bkg(ji,jj,jk,jpdtc) > 0.0 ) ) THEN |
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| 356 | zrat_dtc_det = tracer_bkg(ji,jj,jk,jpdtc) / tracer_bkg(ji,jj,jk,jpdet) |
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| 357 | phyto2d_balinc(ji,jj,jk,jpdtc) = phyto2d_balinc(ji,jj,jk,jpdet) * zrat_dtc_det |
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| 358 | ENDIF |
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| 359 | |
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| 360 | ! Do nothing with iron or oxygen for the time being |
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| 361 | phyto2d_balinc(ji,jj,jk,jpfer) = 0.0 |
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| 362 | phyto2d_balinc(ji,jj,jk,jpoxy) = 0.0 |
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| 363 | |
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| 364 | END DO |
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| 365 | END DO |
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| 366 | END DO |
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| 367 | |
|---|
| 368 | ELSE ! No nitrogen balancing |
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| 369 | |
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| 370 | ! Initialise individual chlorophyll increments to zero |
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| 371 | phyto2d_balinc(:,:,:,jpchn) = 0.0 |
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| 372 | phyto2d_balinc(:,:,:,jpchd) = 0.0 |
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| 373 | |
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| 374 | ! Split up total surface chlorophyll increments |
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| 375 | DO jj = 1, jpj |
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| 376 | DO ji = 1, jpi |
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| 377 | IF ( ( tracer_bkg(ji,jj,1,jpchn) > 0.0 ) .AND. & |
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| 378 | & ( tracer_bkg(ji,jj,1,jpchd) > 0.0 ) ) THEN |
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| 379 | IF ( ld_chltot ) THEN |
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| 380 | ! Chlorophyll split up based on existing ratios |
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| 381 | zfrac_chn = tracer_bkg(ji,jj,1,jpchn) / & |
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| 382 | & ( tracer_bkg(ji,jj,1,jpchn) + tracer_bkg(ji,jj,1,jpchd) ) |
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| 383 | zfrac_chd = tracer_bkg(ji,jj,1,jpchd) / & |
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| 384 | & ( tracer_bkg(ji,jj,1,jpchn) + tracer_bkg(ji,jj,1,jpchd) ) |
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| 385 | phyto2d_balinc(ji,jj,1,jpchn) = pinc_chltot(ji,jj) * zfrac_chn |
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| 386 | phyto2d_balinc(ji,jj,1,jpchd) = pinc_chltot(ji,jj) * zfrac_chd |
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| 387 | ENDIF |
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| 388 | IF( ld_chldia ) THEN |
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| 389 | phyto2d_balinc(ji,jj,1,jpchd) = pinc_chldia(ji,jj) |
|---|
| 390 | ENDIF |
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| 391 | IF( ld_chlnon ) THEN |
|---|
| 392 | phyto2d_balinc(ji,jj,1,jpchn) = pinc_chlnon(ji,jj) |
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| 393 | ENDIF |
|---|
| 394 | |
|---|
| 395 | ! Maintain stoichiometric ratios of nitrogen and silicate |
|---|
| 396 | IF ( ld_chltot .OR. ld_chlnon ) THEN |
|---|
| 397 | zrat_phn_chn = tracer_bkg(ji,jj,1,jpphn) / tracer_bkg(ji,jj,1,jpchn) |
|---|
| 398 | phyto2d_balinc(ji,jj,1,jpphn) = phyto2d_balinc(ji,jj,1,jpchn) * zrat_phn_chn |
|---|
| 399 | ENDIF |
|---|
| 400 | IF ( ld_chltot .OR. ld_chldia ) THEN |
|---|
| 401 | zrat_phd_chd = tracer_bkg(ji,jj,1,jpphd) / tracer_bkg(ji,jj,1,jpchd) |
|---|
| 402 | phyto2d_balinc(ji,jj,1,jpphd) = phyto2d_balinc(ji,jj,1,jpchd) * zrat_phd_chd |
|---|
| 403 | zrat_pds_chd = tracer_bkg(ji,jj,1,jppds) / tracer_bkg(ji,jj,1,jpchd) |
|---|
| 404 | phyto2d_balinc(ji,jj,1,jppds) = phyto2d_balinc(ji,jj,1,jpchd) * zrat_pds_chd |
|---|
| 405 | ENDIF |
|---|
| 406 | ENDIF |
|---|
| 407 | END DO |
|---|
| 408 | END DO |
|---|
| 409 | |
|---|
| 410 | ! Propagate through mixed layer |
|---|
| 411 | DO jj = 1, jpj |
|---|
| 412 | DO ji = 1, jpi |
|---|
| 413 | ! |
|---|
| 414 | jkmax = jpk-1 |
|---|
| 415 | DO jk = jpk-1, 1, -1 |
|---|
| 416 | IF ( ( pmld(ji,jj) > gdepw_n(ji,jj,jk) ) .AND. & |
|---|
| 417 | & ( pmld(ji,jj) <= gdepw_n(ji,jj,jk+1) ) ) THEN |
|---|
| 418 | pmld(ji,jj) = gdepw_n(ji,jj,jk+1) |
|---|
| 419 | jkmax = jk |
|---|
| 420 | ENDIF |
|---|
| 421 | END DO |
|---|
| 422 | ! |
|---|
| 423 | DO jk = 2, jkmax |
|---|
| 424 | phyto2d_balinc(ji,jj,jk,jpchn) = phyto2d_balinc(ji,jj,1,jpchn) |
|---|
| 425 | phyto2d_balinc(ji,jj,jk,jpchd) = phyto2d_balinc(ji,jj,1,jpchd) |
|---|
| 426 | phyto2d_balinc(ji,jj,jk,jpphn) = phyto2d_balinc(ji,jj,1,jpphn) |
|---|
| 427 | phyto2d_balinc(ji,jj,jk,jpphd) = phyto2d_balinc(ji,jj,1,jpphd) |
|---|
| 428 | phyto2d_balinc(ji,jj,jk,jppds) = phyto2d_balinc(ji,jj,1,jppds) |
|---|
| 429 | END DO |
|---|
| 430 | ! |
|---|
| 431 | END DO |
|---|
| 432 | END DO |
|---|
| 433 | |
|---|
| 434 | ! Set other balancing increments to zero |
|---|
| 435 | phyto2d_balinc(:,:,:,jpzmi) = 0.0 |
|---|
| 436 | phyto2d_balinc(:,:,:,jpzme) = 0.0 |
|---|
| 437 | phyto2d_balinc(:,:,:,jpdin) = 0.0 |
|---|
| 438 | phyto2d_balinc(:,:,:,jpsil) = 0.0 |
|---|
| 439 | phyto2d_balinc(:,:,:,jpfer) = 0.0 |
|---|
| 440 | phyto2d_balinc(:,:,:,jpdet) = 0.0 |
|---|
| 441 | phyto2d_balinc(:,:,:,jpdtc) = 0.0 |
|---|
| 442 | phyto2d_balinc(:,:,:,jpdic) = 0.0 |
|---|
| 443 | phyto2d_balinc(:,:,:,jpalk) = 0.0 |
|---|
| 444 | phyto2d_balinc(:,:,:,jpoxy) = 0.0 |
|---|
| 445 | |
|---|
| 446 | ENDIF |
|---|
| 447 | |
|---|
| 448 | ! If performing extra tidal mixing in the Indonesian Throughflow, |
|---|
| 449 | ! increments have been found to make the carbon cycle unstable |
|---|
| 450 | ! Therefore, mask these out |
|---|
| 451 | IF ( ln_tmx_itf ) THEN |
|---|
| 452 | DO jn = 1, jptra |
|---|
| 453 | DO jk = 1, jpk |
|---|
| 454 | phyto2d_balinc(:,:,jk,jn) = phyto2d_balinc(:,:,jk,jn) * ( 1.0 - mask_itf(:,:) ) |
|---|
| 455 | END DO |
|---|
| 456 | END DO |
|---|
| 457 | ENDIF |
|---|
| 458 | |
|---|
| 459 | END SUBROUTINE asm_phyto2d_bal_medusa |
|---|
| 460 | |
|---|
| 461 | #else |
|---|
| 462 | !!---------------------------------------------------------------------- |
|---|
| 463 | !! Default option : Empty routine |
|---|
| 464 | !!---------------------------------------------------------------------- |
|---|
| 465 | CONTAINS |
|---|
| 466 | SUBROUTINE asm_phyto2d_bal_medusa( ld_chltot, & |
|---|
| 467 | & pinc_chltot, & |
|---|
| 468 | & ld_chldia, & |
|---|
| 469 | & pinc_chldia, & |
|---|
| 470 | & ld_chlnon, & |
|---|
| 471 | & pinc_chlnon, & |
|---|
| 472 | & ld_phytot, & |
|---|
| 473 | & pinc_phytot, & |
|---|
| 474 | & ld_phydia, & |
|---|
| 475 | & pinc_phydia, & |
|---|
| 476 | & ld_phynon, & |
|---|
| 477 | & pinc_phynon, & |
|---|
| 478 | & pincper, & |
|---|
| 479 | & p_maxchlinc, ld_phytobal, pmld, & |
|---|
| 480 | & pgrow_avg_bkg, ploss_avg_bkg, & |
|---|
| 481 | & phyt_avg_bkg, mld_max_bkg, & |
|---|
| 482 | & tracer_bkg, phyto2d_balinc ) |
|---|
| 483 | LOGICAL :: ld_chltot |
|---|
| 484 | REAL :: pinc_chltot(:,:) |
|---|
| 485 | LOGICAL :: ld_chldia |
|---|
| 486 | REAL :: pinc_chldia(:,:) |
|---|
| 487 | LOGICAL :: ld_chlnon |
|---|
| 488 | REAL :: pinc_chlnon(:,:) |
|---|
| 489 | LOGICAL :: ld_phytot |
|---|
| 490 | REAL :: pinc_phytot(:,:) |
|---|
| 491 | LOGICAL :: ld_phydia |
|---|
| 492 | REAL :: pinc_phydia(:,:) |
|---|
| 493 | LOGICAL :: ld_phynon |
|---|
| 494 | REAL :: pinc_phynon(:,:) |
|---|
| 495 | REAL :: pincper |
|---|
| 496 | REAL :: p_maxchlinc |
|---|
| 497 | LOGICAL :: ld_phytobal |
|---|
| 498 | REAL :: pmld(:,:) |
|---|
| 499 | REAL :: pgrow_avg_bkg(:,:) |
|---|
| 500 | REAL :: ploss_avg_bkg(:,:) |
|---|
| 501 | REAL :: phyt_avg_bkg(:,:) |
|---|
| 502 | REAL :: mld_max_bkg(:,:) |
|---|
| 503 | REAL :: tracer_bkg(:,:,:,:) |
|---|
| 504 | REAL :: phyto2d_balinc(:,:,:,:) |
|---|
| 505 | WRITE(*,*) 'asm_phyto2d_bal_medusa: You should not have seen this print! error?' |
|---|
| 506 | END SUBROUTINE asm_phyto2d_bal_medusa |
|---|
| 507 | #endif |
|---|
| 508 | |
|---|
| 509 | !!====================================================================== |
|---|
| 510 | END MODULE asmphyto2dbal_medusa |
|---|
