[9432] | 1 | MODULE asmphyto2dbal_hadocc |
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[8428] | 2 | !!====================================================================== |
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[9432] | 3 | !! *** MODULE asmphyto2dbal_hadocc *** |
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| 4 | !! Calculate increments to HadOCC based on surface phyto2d increments |
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[8428] | 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 bioanal.F90 |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | #if defined key_asminc && defined key_hadocc |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | !! 'key_asminc' : assimilation increment interface |
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| 17 | !! 'key_hadocc' : HadOCC model |
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| 18 | !!---------------------------------------------------------------------- |
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[9432] | 19 | !! asm_phyto2d_bal_hadocc : routine to calculate increments to HadOCC |
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[8428] | 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 iom ! i/o |
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| 25 | USE par_hadocc ! HadOCC parameters |
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| 26 | USE had_bgc_stnd, ONLY: kmt ! HadOCC parameters |
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| 27 | USE had_bgc_const ! HadOCC parameters |
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| 28 | USE par_trc, ONLY: jptra ! Tracer parameters |
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| 29 | USE bioanalysis ! Nitrogen balancing |
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| 30 | |
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| 31 | IMPLICIT NONE |
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| 32 | PRIVATE |
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| 33 | |
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[9432] | 34 | PUBLIC asm_phyto2d_bal_hadocc |
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[8428] | 35 | |
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| 36 | ! Default values for biological assimilation parameters |
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| 37 | ! Should match Hemmings et al. (2008) |
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| 38 | REAL(wp), PARAMETER :: balnutext = 0.6 !: Default nutrient balancing factor |
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| 39 | REAL(wp), PARAMETER :: balnutmin = 0.1 !: Fraction of phytoplankton loss to nutrient |
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| 40 | REAL(wp), PARAMETER :: r = 1 !: Reliability of model specific growth rate |
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| 41 | REAL(wp), PARAMETER :: beta_g = 0.05 !: Low rate bias correction for growth rate estimator |
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| 42 | REAL(wp), PARAMETER :: beta_l = 0.05 !: Low rate bias correction for primary loss rate estimator |
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| 43 | REAL(wp), PARAMETER :: beta_m = 0.05 !: Low rate bias correction for secondary loss rate estimator |
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| 44 | REAL(wp), PARAMETER :: a_g = 0.2 !: Error s.d. for log10 of growth rate estimator |
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| 45 | REAL(wp), PARAMETER :: a_l = 0.4 !: Error s.d. for log10 of primary loss rate estimator |
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| 46 | REAL(wp), PARAMETER :: a_m = 0.7 !: Error s.d. for log10 of secondary loss rate estimator |
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| 47 | REAL(wp), PARAMETER :: zfracb0 = 0.7 !: Base zooplankton fraction of loss to Z & D |
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| 48 | REAL(wp), PARAMETER :: zfracb1 = 0 !: Phytoplankton sensitivity of zooplankton fraction |
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| 49 | REAL(wp), PARAMETER :: qrfmax = 1.1 !: Maximum nutrient limitation reduction factor |
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| 50 | REAL(wp), PARAMETER :: qafmax = 1.1 !: Maximum nutrient limitation amplification factor |
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| 51 | REAL(wp), PARAMETER :: zrfmax = 2 !: Maximum zooplankton reduction factor |
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| 52 | REAL(wp), PARAMETER :: zafmax = 2 !: Maximum zooplankton amplification factor |
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| 53 | REAL(wp), PARAMETER :: prfmax = 10 !: Maximum phytoplankton reduction factor (secondary) |
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| 54 | REAL(wp), PARAMETER :: incphymin = 0.0001 !: Minimum size of non-zero phytoplankton increment |
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| 55 | REAL(wp), PARAMETER :: integnstep = 20 !: Number of steps for p.d.f. integral evaluation |
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| 56 | REAL(wp), PARAMETER :: pthreshold = 0.01 !: Fractional threshold level for setting p.d.f. |
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| 57 | ! |
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| 58 | LOGICAL, PARAMETER :: diag_active = .TRUE. !: Depth-independent diagnostics |
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| 59 | LOGICAL, PARAMETER :: diag_fulldepth_active = .TRUE. !: Full-depth diagnostics |
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| 60 | LOGICAL, PARAMETER :: gl_active = .TRUE. !: Growth/loss-based balancing |
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| 61 | LOGICAL, PARAMETER :: nbal_active = .TRUE. !: Nitrogen balancing |
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| 62 | LOGICAL, PARAMETER :: subsurf_active = .TRUE. !: Increments below MLD |
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| 63 | LOGICAL, PARAMETER :: deepneg_active = .FALSE. !: Negative primary increments below MLD |
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| 64 | LOGICAL, PARAMETER :: deeppos_active = .FALSE. !: Positive primary increments below MLD |
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| 65 | LOGICAL, PARAMETER :: nutprof_active = .TRUE. !: Secondary increments |
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| 66 | |
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| 67 | CONTAINS |
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| 68 | |
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[9432] | 69 | SUBROUTINE asm_phyto2d_bal_hadocc( ld_chltot, & |
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| 70 | & pinc_chltot, & |
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| 71 | & ld_phytot, & |
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| 72 | & pinc_phytot, & |
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| 73 | & pincper, & |
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| 74 | & p_maxchlinc, ld_phytobal, pmld, & |
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| 75 | & pgrow_avg_bkg, ploss_avg_bkg, & |
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| 76 | & phyt_avg_bkg, mld_max_bkg, & |
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| 77 | & cchl_p_bkg, & |
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| 78 | & tracer_bkg, phyto2d_balinc ) |
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[8428] | 79 | !!--------------------------------------------------------------------------- |
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[9432] | 80 | !! *** ROUTINE asm_phyto2d_bal_hadocc *** |
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[8428] | 81 | !! |
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[9431] | 82 | !! ** Purpose : calculate increments to HadOCC from 2d phytoplankton increments |
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[8428] | 83 | !! |
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[9431] | 84 | !! ** Method : call nitrogen balancing scheme |
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[8428] | 85 | !! |
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[9431] | 86 | !! ** Action : populate phyto2d_balinc |
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[8428] | 87 | !! |
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| 88 | !! References : Hemmings et al., 2008, J. Mar. Res. |
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| 89 | !! Ford et al., 2012, Ocean Sci. |
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| 90 | !!--------------------------------------------------------------------------- |
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| 91 | !! |
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[9431] | 92 | LOGICAL, INTENT(in ) :: ld_chltot ! Assim chltot y/n |
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| 93 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pinc_chltot ! chltot increments |
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| 94 | LOGICAL, INTENT(in ) :: ld_phytot ! Assim phytot y/n |
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| 95 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pinc_phytot ! phytot increments |
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| 96 | REAL(wp), INTENT(in ) :: pincper ! Assimilation period |
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| 97 | REAL(wp), INTENT(in ) :: p_maxchlinc ! Max chl increment |
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| 98 | LOGICAL, INTENT(in ) :: ld_phytobal ! Balancing y/n |
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| 99 | REAL(wp), INTENT(inout), DIMENSION(jpi,jpj) :: pmld ! Mixed layer depth |
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[8436] | 100 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: pgrow_avg_bkg ! Avg phyto growth |
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| 101 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: ploss_avg_bkg ! Avg phyto loss |
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| 102 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: phyt_avg_bkg ! Avg phyto |
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| 103 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: mld_max_bkg ! Max MLD |
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[8440] | 104 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj) :: cchl_p_bkg ! Surface C:Chl |
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| 105 | REAL(wp), INTENT(in ), DIMENSION(jpi,jpj,jpk,jptra) :: tracer_bkg ! State variables |
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[9431] | 106 | REAL(wp), INTENT( out), DIMENSION(jpi,jpj,jpk,jptra) :: phyto2d_balinc ! Balancing increments |
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[8428] | 107 | !! |
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[8436] | 108 | INTEGER :: ji, jj, jk, jn ! Loop counters |
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[8428] | 109 | INTEGER :: jkmax ! Loop index |
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| 110 | INTEGER, DIMENSION(6) :: i_tracer ! Tracer indices |
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| 111 | REAL(wp), DIMENSION(16) :: modparm ! Model parameters |
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| 112 | REAL(wp), DIMENSION(20) :: assimparm ! Assimilation parameters |
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| 113 | REAL(wp), DIMENSION(jpi,jpj,jpk,6) :: bstate ! Background state |
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| 114 | REAL(wp), DIMENSION(jpi,jpj,jpk,6) :: outincs ! Balancing increments |
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| 115 | REAL(wp), DIMENSION(jpi,jpj,22) :: diag ! Depth-indep diagnostics |
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| 116 | REAL(wp), DIMENSION(jpi,jpj,jpk,22) :: diag_fulldepth ! Full-depth diagnostics |
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| 117 | !!--------------------------------------------------------------------------- |
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| 118 | |
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[9435] | 119 | IF ( ( .NOT. ld_chltot ) .AND. ( .NOT. ld_phytot ) ) THEN |
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| 120 | CALL ctl_stop( ' Trying to do phyto2d balancing but nothing to assimilate' ) |
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| 121 | ENDIF |
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| 122 | |
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| 123 | ! If p_maxchlinc > 0 then cap total absolute chlorophyll increment at that value |
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| 124 | IF ( p_maxchlinc > 0.0 ) THEN |
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| 125 | IF ( ld_chltot ) THEN |
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| 126 | DO jj = 1, jpj |
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| 127 | DO ji = 1, jpi |
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[9431] | 128 | pinc_chltot(ji,jj) = MAX( -1.0 * p_maxchlinc, MIN( pinc_chltot(ji,jj), p_maxchlinc ) ) |
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[9435] | 129 | END DO |
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[9431] | 130 | END DO |
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[9435] | 131 | ENDIF |
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[8648] | 132 | ENDIF |
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[9435] | 133 | |
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| 134 | IF ( ld_phytot ) THEN |
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| 135 | CALL ctl_stop( ' No phytoplankton carbon assimilation quite yet' ) |
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| 136 | ENDIF |
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[8428] | 137 | |
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[9431] | 138 | IF ( ld_phytobal ) THEN ! Nitrogen balancing |
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[8428] | 139 | |
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| 140 | ! Set up model parameters to be passed into Hemmings balancing routine |
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| 141 | modparm(1) = grow_sat |
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| 142 | modparm(2) = psmax |
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| 143 | modparm(3) = par |
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| 144 | modparm(4) = alpha |
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| 145 | modparm(5) = resp_rate |
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| 146 | modparm(6) = pmort_rate |
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| 147 | modparm(7) = phyto_min |
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| 148 | modparm(8) = z_mort_1 |
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| 149 | modparm(9) = z_mort_2 |
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| 150 | modparm(10) = c2n_p |
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| 151 | modparm(11) = c2n_z |
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| 152 | modparm(12) = c2n_d |
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| 153 | modparm(13) = graze_threshold |
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| 154 | modparm(14) = holling_coef |
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| 155 | modparm(15) = graze_sat |
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| 156 | modparm(16) = graze_max |
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| 157 | |
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| 158 | ! Set up assimilation parameters to be passed into balancing routine |
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| 159 | ! Not sure what assimparm(1) is meant to be, but it doesn't get used |
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| 160 | assimparm(2) = balnutext |
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| 161 | assimparm(3) = balnutmin |
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| 162 | assimparm(4) = r |
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| 163 | assimparm(5) = beta_g |
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| 164 | assimparm(6) = beta_l |
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| 165 | assimparm(7) = beta_m |
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| 166 | assimparm(8) = a_g |
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| 167 | assimparm(9) = a_l |
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| 168 | assimparm(10) = a_m |
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| 169 | assimparm(11) = zfracb0 |
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| 170 | assimparm(12) = zfracb1 |
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| 171 | assimparm(13) = qrfmax |
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| 172 | assimparm(14) = qafmax |
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| 173 | assimparm(15) = zrfmax |
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| 174 | assimparm(16) = zafmax |
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| 175 | assimparm(17) = prfmax |
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| 176 | assimparm(18) = incphymin |
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| 177 | assimparm(19) = integnstep |
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| 178 | assimparm(20) = pthreshold |
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| 179 | |
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| 180 | ! Set up external tracer indices array bstate |
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| 181 | i_tracer(1) = 1 ! nutrient |
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| 182 | i_tracer(2) = 2 ! phytoplankton |
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| 183 | i_tracer(3) = 3 ! zooplankton |
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| 184 | i_tracer(4) = 4 ! detritus |
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| 185 | i_tracer(5) = 5 ! DIC |
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| 186 | i_tracer(6) = 6 ! Alkalinity |
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| 187 | |
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| 188 | ! Set background state |
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[8440] | 189 | bstate(:,:,:,i_tracer(1)) = tracer_bkg(:,:,:,jp_had_nut) |
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| 190 | bstate(:,:,:,i_tracer(2)) = tracer_bkg(:,:,:,jp_had_phy) |
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| 191 | bstate(:,:,:,i_tracer(3)) = tracer_bkg(:,:,:,jp_had_zoo) |
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| 192 | bstate(:,:,:,i_tracer(4)) = tracer_bkg(:,:,:,jp_had_pdn) |
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| 193 | bstate(:,:,:,i_tracer(5)) = tracer_bkg(:,:,:,jp_had_dic) |
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| 194 | bstate(:,:,:,i_tracer(6)) = tracer_bkg(:,:,:,jp_had_alk) |
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[8428] | 195 | |
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| 196 | ! Call nitrogen balancing routine |
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[8440] | 197 | CALL bio_analysis( jpi, jpj, jpk, ZDZ(:,:,:), i_tracer, modparm, & |
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| 198 | & n2be_p, n2be_z, n2be_d, assimparm, & |
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[9431] | 199 | & INT(pincper), 1, kmt(:,:), tmask(:,:,:), & |
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| 200 | & pmld(:,:), mld_max_bkg(:,:), pinc_chltot(:,:), cchl_p_bkg(:,:), & |
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[8440] | 201 | & nbal_active, phyt_avg_bkg(:,:), & |
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| 202 | & gl_active, pgrow_avg_bkg(:,:), ploss_avg_bkg(:,:), & |
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| 203 | & subsurf_active, deepneg_active, & |
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| 204 | & deeppos_active, nutprof_active, & |
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| 205 | & bstate, outincs, & |
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| 206 | & diag_active, diag, & |
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[8428] | 207 | & diag_fulldepth_active, diag_fulldepth ) |
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| 208 | |
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| 209 | ! Save balancing increments |
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[9431] | 210 | phyto2d_balinc(:,:,:,jp_had_nut) = outincs(:,:,:,i_tracer(1)) |
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| 211 | phyto2d_balinc(:,:,:,jp_had_phy) = outincs(:,:,:,i_tracer(2)) |
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| 212 | phyto2d_balinc(:,:,:,jp_had_zoo) = outincs(:,:,:,i_tracer(3)) |
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| 213 | phyto2d_balinc(:,:,:,jp_had_pdn) = outincs(:,:,:,i_tracer(4)) |
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| 214 | phyto2d_balinc(:,:,:,jp_had_dic) = outincs(:,:,:,i_tracer(5)) |
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| 215 | phyto2d_balinc(:,:,:,jp_had_alk) = outincs(:,:,:,i_tracer(6)) |
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[8428] | 216 | |
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| 217 | ELSE ! No nitrogen balancing |
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| 218 | |
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| 219 | ! Initialise phytoplankton increment to zero |
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[9431] | 220 | phyto2d_balinc(:,:,:,jp_had_phy) = 0.0 |
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[8428] | 221 | |
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| 222 | ! Convert surface chlorophyll increment to phytoplankton nitrogen |
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[9431] | 223 | phyto2d_balinc(:,:,1,jp_had_phy) = ( cchl_p_bkg(:,:) / (mw_carbon * c2n_p) ) * pinc_chltot(:,:) |
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[8428] | 224 | |
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| 225 | ! Propagate through mixed layer |
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| 226 | DO jj = 1, jpj |
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| 227 | DO ji = 1, jpi |
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| 228 | ! |
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| 229 | jkmax = jpk-1 |
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| 230 | DO jk = jpk-1, 1, -1 |
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[9431] | 231 | IF ( ( pmld(ji,jj) > gdepw_n(ji,jj,jk) ) .AND. & |
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| 232 | & ( pmld(ji,jj) <= gdepw_n(ji,jj,jk+1) ) ) THEN |
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| 233 | pmld(ji,jj) = gdepw_n(ji,jj,jk+1) |
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[8428] | 234 | jkmax = jk |
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| 235 | ENDIF |
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| 236 | END DO |
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| 237 | ! |
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| 238 | DO jk = 2, jkmax |
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[9431] | 239 | phyto2d_balinc(ji,jj,jk,jp_had_phy) = phyto2d_balinc(ji,jj,1,jp_had_phy) |
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[8428] | 240 | END DO |
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| 241 | ! |
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| 242 | END DO |
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| 243 | END DO |
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| 244 | |
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| 245 | ! Set other balancing increments to zero |
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[9431] | 246 | phyto2d_balinc(:,:,:,jp_had_nut) = 0.0 |
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| 247 | phyto2d_balinc(:,:,:,jp_had_zoo) = 0.0 |
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| 248 | phyto2d_balinc(:,:,:,jp_had_pdn) = 0.0 |
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| 249 | phyto2d_balinc(:,:,:,jp_had_dic) = 0.0 |
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| 250 | phyto2d_balinc(:,:,:,jp_had_alk) = 0.0 |
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[8428] | 251 | |
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| 252 | ENDIF |
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| 253 | |
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[9432] | 254 | END SUBROUTINE asm_phyto2d_bal_hadocc |
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[8428] | 255 | |
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| 256 | #else |
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| 257 | !!---------------------------------------------------------------------- |
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| 258 | !! Default option : Empty routine |
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| 259 | !!---------------------------------------------------------------------- |
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| 260 | CONTAINS |
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[9432] | 261 | SUBROUTINE asm_phyto2d_bal_hadocc( ld_chltot, & |
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| 262 | & pinc_chltot, & |
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| 263 | & ld_phytot, & |
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| 264 | & pinc_phytot, & |
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| 265 | & pincper, & |
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| 266 | & p_maxchlinc, ld_phytobal, pmld, & |
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| 267 | & pgrow_avg_bkg, ploss_avg_bkg, & |
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| 268 | & phyt_avg_bkg, mld_max_bkg, & |
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| 269 | & cchl_p_bkg, & |
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| 270 | & tracer_bkg, phyto2d_balinc ) |
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[9431] | 271 | LOGICAL :: ld_chltot |
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| 272 | REAL :: pinc_chltot(:,:) |
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| 273 | LOGICAL :: ld_phytot |
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| 274 | REAL :: pinc_phytot(:,:) |
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| 275 | REAL :: pincper |
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| 276 | REAL :: p_maxchlinc |
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| 277 | LOGICAL :: ld_phytobal |
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| 278 | REAL :: pmld(:,:) |
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[8440] | 279 | REAL :: pgrow_avg_bkg(:,:) |
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| 280 | REAL :: ploss_avg_bkg(:,:) |
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| 281 | REAL :: phyt_avg_bkg(:,:) |
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| 282 | REAL :: mld_max_bkg(:,:) |
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| 283 | REAL :: cchl_p_bkg(:,:) |
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| 284 | REAL :: tracer_bkg(:,:,:,:) |
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[9431] | 285 | REAL :: phyto2d_balinc(:,:,:,:) |
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[9432] | 286 | WRITE(*,*) 'asm_phyto2d_bal_hadocc: You should not have seen this print! error?' |
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| 287 | END SUBROUTINE asm_phyto2d_bal_hadocc |
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[8428] | 288 | #endif |
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| 289 | |
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| 290 | !!====================================================================== |
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[9432] | 291 | END MODULE asmphyto2dbal_hadocc |
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