| 1 | MODULE p4zopt |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE p4zopt *** |
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| 4 | !! TOP - PISCES : Compute the light availability in the water column |
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| 5 | !!====================================================================== |
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| 6 | !! History : 1.0 ! 2004 (O. Aumont) Original code |
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| 7 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
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| 8 | !! 3.2 ! 2009-04 (C. Ethe, G. Madec) optimisation |
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| 9 | !! 3.4 ! 2011-06 (O. Aumont, C. Ethe) Improve light availability of nano & diat |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | #if defined key_pisces |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! 'key_pisces' PISCES bio-model |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | !! p4z_opt : light availability in the water column |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | USE trc ! tracer variables |
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| 18 | USE oce_trc ! tracer-ocean share variables |
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| 19 | USE sms_pisces ! Source Minus Sink of PISCES |
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| 20 | USE iom ! I/O manager |
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| 21 | USE fldread ! time interpolation |
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| 22 | USE prtctl_trc ! print control for debugging |
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| 23 | |
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| 24 | |
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| 25 | IMPLICIT NONE |
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| 26 | PRIVATE |
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| 27 | |
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| 28 | PUBLIC p4z_opt ! called in p4zbio.F90 module |
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| 29 | PUBLIC p4z_opt_init ! called in trcsms_pisces.F90 module |
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| 30 | PUBLIC p4z_opt_alloc |
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| 31 | |
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| 32 | !! * Shared module variables |
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| 33 | |
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| 34 | LOGICAL :: ln_varpar !: boolean for variable PAR fraction |
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| 35 | REAL(wp) :: parlux !: Fraction of shortwave as PAR |
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| 36 | REAL(wp) :: xparsw !: parlux/3 |
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| 37 | REAL(wp) :: xsi0r !: 1. /rn_si0 |
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| 38 | |
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| 39 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_par ! structure of input par |
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| 40 | INTEGER , PARAMETER :: nbtimes = 365 !: maximum number of times record in a file |
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| 41 | INTEGER :: ntimes_par ! number of time steps in a file |
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| 42 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: par_varsw !: PAR fraction of shortwave |
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| 43 | |
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| 44 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: enano, ediat !: PAR for phyto, nano and diat |
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| 45 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: etot_ndcy !: PAR over 24h in case of diurnal cycle |
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| 46 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: emoy !: averaged PAR in the mixed layer |
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| 47 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ekb, ekg, ekr !: wavelength (Red-Green-Blue) |
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| 48 | |
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| 49 | INTEGER :: nksrp ! levels below which the light cannot penetrate ( depth larger than 391 m) |
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| 50 | |
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| 51 | REAL(wp), DIMENSION(3,61), PUBLIC :: xkrgb !: tabulated attenuation coefficients for RGB absorption |
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| 52 | |
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| 53 | !!---------------------------------------------------------------------- |
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| 54 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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| 55 | !! $Id: p4zopt.F90 3160 2011-11-20 14:27:18Z cetlod $ |
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| 56 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 57 | !!---------------------------------------------------------------------- |
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| 58 | CONTAINS |
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| 59 | |
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| 60 | SUBROUTINE p4z_opt( kt, knt ) |
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| 61 | !!--------------------------------------------------------------------- |
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| 62 | !! *** ROUTINE p4z_opt *** |
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| 63 | !! |
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| 64 | !! ** Purpose : Compute the light availability in the water column |
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| 65 | !! depending on the depth and the chlorophyll concentration |
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| 66 | !! |
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| 67 | !! ** Method : - ??? |
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| 68 | !!--------------------------------------------------------------------- |
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| 69 | ! |
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| 70 | INTEGER, INTENT(in) :: kt, knt ! ocean time step |
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| 71 | ! |
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| 72 | INTEGER :: ji, jj, jk |
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| 73 | INTEGER :: irgb |
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| 74 | REAL(wp) :: zchl |
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| 75 | REAL(wp) :: zc0 , zc1 , zc2, zc3, z1_dep |
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| 76 | REAL(wp), POINTER, DIMENSION(:,: ) :: zdepmoy, zetmp1, zetmp2, zetmp3, zetmp4 |
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| 77 | REAL(wp), POINTER, DIMENSION(:,: ) :: zqsr100, zqsr_corr |
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| 78 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zpar, ze0, ze1, ze2, ze3 |
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| 79 | !!--------------------------------------------------------------------- |
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| 80 | ! |
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| 81 | IF( nn_timing == 1 ) CALL timing_start('p4z_opt') |
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| 82 | ! |
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| 83 | ! Allocate temporary workspace |
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| 84 | CALL wrk_alloc( jpi, jpj, zdepmoy, zetmp1, zetmp2, zetmp3, zetmp4 ) |
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| 85 | CALL wrk_alloc( jpi, jpj, zqsr100, zqsr_corr ) |
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| 86 | CALL wrk_alloc( jpi, jpj, jpk, zpar , ze0, ze1, ze2, ze3 ) |
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| 87 | |
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| 88 | IF( knt == 1 .AND. ln_varpar ) CALL p4z_opt_sbc( kt ) |
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| 89 | |
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| 90 | ! Initialisation of variables used to compute PAR |
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| 91 | ! ----------------------------------------------- |
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| 92 | ze1(:,:,:) = 0._wp |
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| 93 | ze2(:,:,:) = 0._wp |
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| 94 | ze3(:,:,:) = 0._wp |
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| 95 | ! !* attenuation coef. function of Chlorophyll and wavelength (Red-Green-Blue) |
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| 96 | DO jk = 1, jpkm1 ! -------------------------------------------------------- |
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| 97 | DO jj = 1, jpj |
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| 98 | DO ji = 1, jpi |
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| 99 | zchl = ( trb(ji,jj,jk,jpnch) + trb(ji,jj,jk,jpdch) + rtrn ) * 1.e6 |
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| 100 | zchl = MIN( 10. , MAX( 0.05, zchl ) ) |
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| 101 | irgb = NINT( 41 + 20.* LOG10( zchl ) + rtrn ) |
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| 102 | ! |
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| 103 | ekb(ji,jj,jk) = xkrgb(1,irgb) * e3t_n(ji,jj,jk) |
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| 104 | ekg(ji,jj,jk) = xkrgb(2,irgb) * e3t_n(ji,jj,jk) |
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| 105 | ekr(ji,jj,jk) = xkrgb(3,irgb) * e3t_n(ji,jj,jk) |
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| 106 | END DO |
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| 107 | END DO |
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| 108 | END DO |
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| 109 | ! !* Photosynthetically Available Radiation (PAR) |
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| 110 | ! ! -------------------------------------- |
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| 111 | IF( l_trcdm2dc ) THEN ! diurnal cycle |
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| 112 | ! |
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| 113 | zqsr_corr(:,:) = qsr_mean(:,:) / ( 1. - fr_i(:,:) + rtrn ) |
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| 114 | ! |
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| 115 | CALL p4z_opt_par( kt, zqsr_corr, ze1, ze2, ze3, pqsr100 = zqsr100 ) |
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| 116 | ! |
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| 117 | DO jk = 1, nksrp |
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| 118 | etot_ndcy(:,:,jk) = ze1(:,:,jk) + ze2(:,:,jk) + ze3(:,:,jk) |
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| 119 | enano (:,:,jk) = 2.1 * ze1(:,:,jk) + 0.42 * ze2(:,:,jk) + 0.4 * ze3(:,:,jk) |
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| 120 | ediat (:,:,jk) = 1.6 * ze1(:,:,jk) + 0.69 * ze2(:,:,jk) + 0.7 * ze3(:,:,jk) |
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| 121 | END DO |
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| 122 | ! |
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| 123 | zqsr_corr(:,:) = qsr(:,:) / ( 1. - fr_i(:,:) + rtrn ) |
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| 124 | ! |
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| 125 | CALL p4z_opt_par( kt, zqsr_corr, ze1, ze2, ze3 ) |
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| 126 | ! |
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| 127 | DO jk = 1, nksrp |
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| 128 | etot(:,:,jk) = ze1(:,:,jk) + ze2(:,:,jk) + ze3(:,:,jk) |
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| 129 | END DO |
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| 130 | ! |
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| 131 | ELSE |
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| 132 | ! |
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| 133 | zqsr_corr(:,:) = qsr(:,:) / ( 1. - fr_i(:,:) + rtrn ) |
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| 134 | ! |
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| 135 | CALL p4z_opt_par( kt, zqsr_corr, ze1, ze2, ze3, pqsr100 = zqsr100 ) |
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| 136 | ! |
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| 137 | DO jk = 1, nksrp |
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| 138 | etot (:,:,jk) = ze1(:,:,jk) + ze2(:,:,jk) + ze3(:,:,jk) |
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| 139 | enano(:,:,jk) = 2.1 * ze1(:,:,jk) + 0.42 * ze2(:,:,jk) + 0.4 * ze3(:,:,jk) |
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| 140 | ediat(:,:,jk) = 1.6 * ze1(:,:,jk) + 0.69 * ze2(:,:,jk) + 0.7 * ze3(:,:,jk) |
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| 141 | END DO |
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| 142 | etot_ndcy(:,:,:) = etot(:,:,:) |
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| 143 | ENDIF |
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| 144 | |
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| 145 | |
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| 146 | IF( ln_qsr_bio ) THEN !* heat flux accros w-level (used in the dynamics) |
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| 147 | ! ! ------------------------ |
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| 148 | CALL p4z_opt_par( kt, qsr, ze1, ze2, ze3, pe0=ze0 ) |
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| 149 | ! |
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| 150 | etot3(:,:,1) = qsr(:,:) * tmask(:,:,1) |
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| 151 | DO jk = 2, nksrp + 1 |
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| 152 | etot3(:,:,jk) = ( ze0(:,:,jk) + ze1(:,:,jk) + ze2(:,:,jk) + ze3(:,:,jk) ) * tmask(:,:,jk) |
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| 153 | END DO |
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| 154 | ! ! ------------------------ |
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| 155 | ENDIF |
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| 156 | ! !* Euphotic depth and level |
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| 157 | neln(:,:) = 1 ! ------------------------ |
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| 158 | heup(:,:) = 300. |
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| 159 | |
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| 160 | DO jk = 2, nksrp |
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| 161 | DO jj = 1, jpj |
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| 162 | DO ji = 1, jpi |
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| 163 | IF( etot_ndcy(ji,jj,jk) * tmask(ji,jj,jk) >= zqsr100(ji,jj) ) THEN |
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| 164 | neln(ji,jj) = jk+1 ! Euphotic level : 1rst T-level strictly below Euphotic layer |
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| 165 | ! ! nb: ensure the compatibility with nmld_trc definition in trd_mld_trc_zint |
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| 166 | heup(ji,jj) = gdepw_n(ji,jj,jk+1) ! Euphotic layer depth |
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| 167 | ENDIF |
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| 168 | END DO |
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| 169 | END DO |
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| 170 | END DO |
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| 171 | ! |
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| 172 | heup(:,:) = MIN( 300., heup(:,:) ) |
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| 173 | ! !* mean light over the mixed layer |
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| 174 | zdepmoy(:,:) = 0.e0 ! ------------------------------- |
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| 175 | zetmp1 (:,:) = 0.e0 |
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| 176 | zetmp2 (:,:) = 0.e0 |
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| 177 | zetmp3 (:,:) = 0.e0 |
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| 178 | zetmp4 (:,:) = 0.e0 |
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| 179 | |
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| 180 | DO jk = 1, nksrp |
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| 181 | DO jj = 1, jpj |
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| 182 | DO ji = 1, jpi |
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| 183 | IF( gdepw_n(ji,jj,jk+1) <= hmld(ji,jj) ) THEN |
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| 184 | zetmp1 (ji,jj) = zetmp1 (ji,jj) + etot (ji,jj,jk) * e3t_n(ji,jj,jk) ! remineralisation |
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| 185 | zetmp2 (ji,jj) = zetmp2 (ji,jj) + etot_ndcy(ji,jj,jk) * e3t_n(ji,jj,jk) ! production |
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| 186 | zetmp3 (ji,jj) = zetmp3 (ji,jj) + enano (ji,jj,jk) * e3t_n(ji,jj,jk) ! production |
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| 187 | zetmp4 (ji,jj) = zetmp4 (ji,jj) + ediat (ji,jj,jk) * e3t_n(ji,jj,jk) ! production |
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| 188 | zdepmoy(ji,jj) = zdepmoy(ji,jj) + e3t_n(ji,jj,jk) |
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| 189 | ENDIF |
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| 190 | END DO |
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| 191 | END DO |
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| 192 | END DO |
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| 193 | ! |
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| 194 | emoy(:,:,:) = etot(:,:,:) ! remineralisation |
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| 195 | zpar(:,:,:) = etot_ndcy(:,:,:) ! diagnostic : PAR with no diurnal cycle |
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| 196 | ! |
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| 197 | DO jk = 1, nksrp |
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| 198 | DO jj = 1, jpj |
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| 199 | DO ji = 1, jpi |
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| 200 | IF( gdepw_n(ji,jj,jk+1) <= hmld(ji,jj) ) THEN |
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| 201 | z1_dep = 1. / ( zdepmoy(ji,jj) + rtrn ) |
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| 202 | emoy (ji,jj,jk) = zetmp1(ji,jj) * z1_dep |
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| 203 | zpar (ji,jj,jk) = zetmp2(ji,jj) * z1_dep |
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| 204 | enano(ji,jj,jk) = zetmp3(ji,jj) * z1_dep |
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| 205 | ediat(ji,jj,jk) = zetmp4(ji,jj) * z1_dep |
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| 206 | ENDIF |
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| 207 | END DO |
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| 208 | END DO |
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| 209 | END DO |
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| 210 | ! |
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| 211 | IF( lk_iomput ) THEN |
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| 212 | IF( knt == nrdttrc ) THEN |
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| 213 | IF( iom_use( "Heup" ) ) CALL iom_put( "Heup" , heup(:,: ) * tmask(:,:,1) ) ! euphotic layer deptht |
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| 214 | IF( iom_use( "PARDM" ) ) CALL iom_put( "PARDM", zpar(:,:,:) * tmask(:,:,:) ) ! Photosynthetically Available Radiation |
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| 215 | IF( iom_use( "PAR" ) ) CALL iom_put( "PAR" , emoy(:,:,:) * tmask(:,:,:) ) ! Photosynthetically Available Radiation |
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| 216 | ENDIF |
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| 217 | ELSE |
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| 218 | IF( ln_diatrc ) THEN ! save output diagnostics |
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| 219 | trc2d(:,:, jp_pcs0_2d + 10) = heup(:,: ) * tmask(:,:,1) |
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| 220 | trc3d(:,:,:,jp_pcs0_3d + 3) = etot(:,:,:) * tmask(:,:,:) |
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| 221 | ENDIF |
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| 222 | ENDIF |
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| 223 | ! |
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| 224 | CALL wrk_dealloc( jpi, jpj, zdepmoy, zetmp1, zetmp2, zetmp3, zetmp4 ) |
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| 225 | CALL wrk_dealloc( jpi, jpj, zqsr100, zqsr_corr ) |
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| 226 | CALL wrk_dealloc( jpi, jpj, jpk, zpar , ze0, ze1, ze2, ze3 ) |
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| 227 | ! |
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| 228 | IF( nn_timing == 1 ) CALL timing_stop('p4z_opt') |
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| 229 | ! |
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| 230 | END SUBROUTINE p4z_opt |
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| 231 | |
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| 232 | SUBROUTINE p4z_opt_par( kt, pqsr, pe1, pe2, pe3, pe0, pqsr100 ) |
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| 233 | !!---------------------------------------------------------------------- |
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| 234 | !! *** routine p4z_opt_par *** |
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| 235 | !! |
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| 236 | !! ** purpose : compute PAR of each wavelength (Red-Green-Blue) |
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| 237 | !! for a given shortwave radiation |
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| 238 | !! |
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| 239 | !!---------------------------------------------------------------------- |
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| 240 | !! * arguments |
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| 241 | INTEGER, INTENT(in) :: kt ! ocean time-step |
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| 242 | REAL(wp), DIMENSION(jpi,jpj) , INTENT(in) :: pqsr ! shortwave |
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| 243 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(inout) :: pe1 , pe2 , pe3 ! PAR ( R-G-B) |
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| 244 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(inout), OPTIONAL :: pe0 |
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| 245 | REAL(wp), DIMENSION(jpi,jpj) , INTENT(out) , OPTIONAL :: pqsr100 |
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| 246 | !! * local variables |
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| 247 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 248 | REAL(wp), DIMENSION(jpi,jpj) :: zqsr ! shortwave |
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| 249 | !!---------------------------------------------------------------------- |
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| 250 | |
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| 251 | ! Real shortwave |
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| 252 | IF( ln_varpar ) THEN ; zqsr(:,:) = par_varsw(:,:) * pqsr(:,:) |
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| 253 | ELSE ; zqsr(:,:) = xparsw * pqsr(:,:) |
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| 254 | ENDIF |
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| 255 | |
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| 256 | ! Light at the euphotic depth |
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| 257 | IF( PRESENT( pqsr100 ) ) pqsr100(:,:) = 0.01 * 3. * zqsr(:,:) |
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| 258 | |
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| 259 | IF( PRESENT( pe0 ) ) THEN ! W-level |
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| 260 | ! |
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| 261 | pe0(:,:,1) = pqsr(:,:) - 3. * zqsr(:,:) ! ( 1 - 3 * alpha ) * q |
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| 262 | pe1(:,:,1) = zqsr(:,:) |
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| 263 | pe2(:,:,1) = zqsr(:,:) |
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| 264 | pe3(:,:,1) = zqsr(:,:) |
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| 265 | ! |
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| 266 | DO jk = 2, nksrp + 1 |
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| 267 | DO jj = 1, jpj |
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| 268 | DO ji = 1, jpi |
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| 269 | pe0(ji,jj,jk) = pe0(ji,jj,jk-1) * EXP( -e3t_n(ji,jj,jk-1) * xsi0r ) |
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| 270 | pe1(ji,jj,jk) = pe1(ji,jj,jk-1) * EXP( -ekb(ji,jj,jk-1 ) ) |
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| 271 | pe2(ji,jj,jk) = pe2(ji,jj,jk-1) * EXP( -ekg(ji,jj,jk-1 ) ) |
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| 272 | pe3(ji,jj,jk) = pe3(ji,jj,jk-1) * EXP( -ekr(ji,jj,jk-1 ) ) |
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| 273 | END DO |
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| 274 | ! |
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| 275 | END DO |
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| 276 | ! |
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| 277 | END DO |
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| 278 | ! |
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| 279 | ELSE ! T- level |
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| 280 | ! |
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| 281 | pe1(:,:,1) = zqsr(:,:) * EXP( -0.5 * ekb(:,:,1) ) |
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| 282 | pe2(:,:,1) = zqsr(:,:) * EXP( -0.5 * ekg(:,:,1) ) |
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| 283 | pe3(:,:,1) = zqsr(:,:) * EXP( -0.5 * ekr(:,:,1) ) |
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| 284 | ! |
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| 285 | DO jk = 2, nksrp |
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| 286 | DO jj = 1, jpj |
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| 287 | DO ji = 1, jpi |
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| 288 | pe1(ji,jj,jk) = pe1(ji,jj,jk-1) * EXP( -0.5 * ( ekb(ji,jj,jk-1) + ekb(ji,jj,jk) ) ) |
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| 289 | pe2(ji,jj,jk) = pe2(ji,jj,jk-1) * EXP( -0.5 * ( ekg(ji,jj,jk-1) + ekg(ji,jj,jk) ) ) |
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| 290 | pe3(ji,jj,jk) = pe3(ji,jj,jk-1) * EXP( -0.5 * ( ekr(ji,jj,jk-1) + ekr(ji,jj,jk) ) ) |
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| 291 | END DO |
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| 292 | END DO |
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| 293 | END DO |
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| 294 | ! |
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| 295 | ENDIF |
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| 296 | ! |
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| 297 | END SUBROUTINE p4z_opt_par |
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| 298 | |
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| 299 | |
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| 300 | SUBROUTINE p4z_opt_sbc( kt ) |
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| 301 | !!---------------------------------------------------------------------- |
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| 302 | !! *** routine p4z_opt_sbc *** |
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| 303 | !! |
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| 304 | !! ** purpose : read and interpolate the variable PAR fraction |
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| 305 | !! of shortwave radiation |
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| 306 | !! |
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| 307 | !! ** method : read the files and interpolate the appropriate variables |
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| 308 | !! |
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| 309 | !! ** input : external netcdf files |
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| 310 | !! |
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| 311 | !!---------------------------------------------------------------------- |
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| 312 | !! * arguments |
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| 313 | INTEGER , INTENT(in) :: kt ! ocean time step |
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| 314 | |
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| 315 | !! * local declarations |
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| 316 | INTEGER :: ji,jj |
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| 317 | REAL(wp) :: zcoef |
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| 318 | !!--------------------------------------------------------------------- |
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| 319 | ! |
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| 320 | IF( nn_timing == 1 ) CALL timing_start('p4z_optsbc') |
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| 321 | ! |
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| 322 | ! Compute par_varsw at nit000 or only if there is more than 1 time record in par coefficient file |
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| 323 | IF( ln_varpar ) THEN |
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| 324 | IF( kt == nit000 .OR. ( kt /= nit000 .AND. ntimes_par > 1 ) ) THEN |
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| 325 | CALL fld_read( kt, 1, sf_par ) |
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| 326 | par_varsw(:,:) = ( sf_par(1)%fnow(:,:,1) ) / 3.0 |
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| 327 | ENDIF |
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| 328 | ENDIF |
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| 329 | ! |
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| 330 | IF( nn_timing == 1 ) CALL timing_stop('p4z_optsbc') |
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| 331 | ! |
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| 332 | END SUBROUTINE p4z_opt_sbc |
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| 333 | |
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| 334 | SUBROUTINE p4z_opt_init |
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| 335 | !!---------------------------------------------------------------------- |
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| 336 | !! *** ROUTINE p4z_opt_init *** |
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| 337 | !! |
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| 338 | !! ** Purpose : Initialization of tabulated attenuation coef |
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| 339 | !! and of the percentage of PAR in Shortwave |
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| 340 | !! |
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| 341 | !! ** Input : external ascii and netcdf files |
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| 342 | !!---------------------------------------------------------------------- |
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| 343 | ! |
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| 344 | INTEGER :: numpar |
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| 345 | INTEGER :: ierr |
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| 346 | INTEGER :: ios ! Local integer output status for namelist read |
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| 347 | REAL(wp), DIMENSION(nbtimes) :: zsteps ! times records |
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| 348 | ! |
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| 349 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files |
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| 350 | TYPE(FLD_N) :: sn_par ! informations about the fields to be read |
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| 351 | ! |
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| 352 | NAMELIST/nampisopt/cn_dir, sn_par, ln_varpar, parlux |
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| 353 | |
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| 354 | !!---------------------------------------------------------------------- |
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| 355 | |
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| 356 | IF( nn_timing == 1 ) CALL timing_start('p4z_opt_init') |
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| 357 | |
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| 358 | REWIND( numnatp_ref ) ! Namelist nampisopt in reference namelist : Pisces attenuation coef. and PAR |
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| 359 | READ ( numnatp_ref, nampisopt, IOSTAT = ios, ERR = 901) |
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| 360 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisopt in reference namelist', lwp ) |
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| 361 | |
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| 362 | REWIND( numnatp_cfg ) ! Namelist nampisopt in configuration namelist : Pisces attenuation coef. and PAR |
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| 363 | READ ( numnatp_cfg, nampisopt, IOSTAT = ios, ERR = 902 ) |
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| 364 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nampisopt in configuration namelist', lwp ) |
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| 365 | IF(lwm) WRITE ( numonp, nampisopt ) |
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| 366 | |
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| 367 | IF(lwp) THEN |
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| 368 | WRITE(numout,*) ' ' |
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| 369 | WRITE(numout,*) ' namelist : nampisopt ' |
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| 370 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~ ' |
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| 371 | WRITE(numout,*) ' PAR as a variable fraction of SW ln_varpar = ', ln_varpar |
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| 372 | WRITE(numout,*) ' Default value for the PAR fraction parlux = ', parlux |
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| 373 | ENDIF |
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| 374 | ! |
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| 375 | xparsw = parlux / 3.0 |
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| 376 | xsi0r = 1.e0 / rn_si0 |
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| 377 | ! |
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| 378 | ! Variable PAR at the surface of the ocean |
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| 379 | ! ---------------------------------------- |
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| 380 | IF( ln_varpar ) THEN |
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| 381 | IF(lwp) WRITE(numout,*) ' initialize variable par fraction ' |
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| 382 | IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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| 383 | ! |
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| 384 | ALLOCATE( par_varsw(jpi,jpj) ) |
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| 385 | ! |
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| 386 | ALLOCATE( sf_par(1), STAT=ierr ) !* allocate and fill sf_sst (forcing structure) with sn_sst |
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| 387 | IF( ierr > 0 ) CALL ctl_stop( 'STOP', 'p4z_opt_init: unable to allocate sf_par structure' ) |
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| 388 | ! |
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| 389 | CALL fld_fill( sf_par, (/ sn_par /), cn_dir, 'p4z_opt_init', 'Variable PAR fraction ', 'nampisopt' ) |
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| 390 | ALLOCATE( sf_par(1)%fnow(jpi,jpj,1) ) |
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| 391 | IF( sn_par%ln_tint ) ALLOCATE( sf_par(1)%fdta(jpi,jpj,1,2) ) |
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| 392 | |
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| 393 | CALL iom_open ( TRIM( sn_par%clname ) , numpar ) |
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| 394 | CALL iom_gettime( numpar, zsteps, kntime=ntimes_par) ! get number of record in file |
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| 395 | ENDIF |
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| 396 | ! |
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| 397 | CALL trc_oce_rgb( xkrgb ) ! tabulated attenuation coefficients |
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| 398 | nksrp = trc_oce_ext_lev( r_si2, 0.33e2 ) ! max level of light extinction (Blue Chl=0.01) |
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| 399 | ! |
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| 400 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksrp, ' ref depth = ', gdepw_1d(nksrp+1), ' m' |
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| 401 | ! |
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| 402 | ekr (:,:,:) = 0._wp |
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| 403 | ekb (:,:,:) = 0._wp |
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| 404 | ekg (:,:,:) = 0._wp |
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| 405 | etot (:,:,:) = 0._wp |
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| 406 | etot_ndcy(:,:,:) = 0._wp |
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| 407 | enano (:,:,:) = 0._wp |
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| 408 | ediat (:,:,:) = 0._wp |
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| 409 | IF( ln_qsr_bio ) etot3 (:,:,:) = 0._wp |
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| 410 | ! |
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| 411 | IF( nn_timing == 1 ) CALL timing_stop('p4z_opt_init') |
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| 412 | ! |
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| 413 | END SUBROUTINE p4z_opt_init |
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| 414 | |
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| 415 | |
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| 416 | INTEGER FUNCTION p4z_opt_alloc() |
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| 417 | !!---------------------------------------------------------------------- |
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| 418 | !! *** ROUTINE p4z_opt_alloc *** |
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| 419 | !!---------------------------------------------------------------------- |
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| 420 | ALLOCATE( ekb(jpi,jpj,jpk) , ekr(jpi,jpj,jpk), ekg(jpi,jpj,jpk), & |
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| 421 | & enano(jpi,jpj,jpk) , ediat(jpi,jpj,jpk), & |
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| 422 | & etot_ndcy(jpi,jpj,jpk), emoy (jpi,jpj,jpk), STAT=p4z_opt_alloc ) |
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| 423 | ! |
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| 424 | IF( p4z_opt_alloc /= 0 ) CALL ctl_warn('p4z_opt_alloc : failed to allocate arrays.') |
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| 425 | ! |
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| 426 | END FUNCTION p4z_opt_alloc |
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| 427 | |
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| 428 | #else |
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| 429 | !!---------------------------------------------------------------------- |
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| 430 | !! Dummy module : No PISCES bio-model |
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| 431 | !!---------------------------------------------------------------------- |
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| 432 | CONTAINS |
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| 433 | SUBROUTINE p4z_opt ! Empty routine |
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| 434 | END SUBROUTINE p4z_opt |
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| 435 | #endif |
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| 436 | |
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| 437 | !!====================================================================== |
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| 438 | END MODULE p4zopt |
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