[935] | 1 | MODULE p4zopt |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE p4zopt *** |
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[1445] | 4 | !! TOP - PISCES : Compute the light availability in the water column |
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[935] | 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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[2715] | 8 | !! 3.2 ! 2009-04 (C. Ethe, G. Madec) optimisation |
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[3294] | 9 | !! 3.4 ! 2011-06 (O. Aumont, C. Ethe) Improve light availability of nano & diat |
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[935] | 10 | !!---------------------------------------------------------------------- |
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[1445] | 11 | #if defined key_pisces |
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[935] | 12 | !!---------------------------------------------------------------------- |
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| 13 | !! 'key_pisces' PISCES bio-model |
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| 14 | !!---------------------------------------------------------------------- |
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[1445] | 15 | !! p4z_opt : light availability in the water column |
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[935] | 16 | !!---------------------------------------------------------------------- |
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[1445] | 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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[3294] | 20 | USE iom ! I/O manager |
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[935] | 21 | |
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| 22 | IMPLICIT NONE |
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| 23 | PRIVATE |
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| 24 | |
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[2528] | 25 | PUBLIC p4z_opt ! called in p4zbio.F90 module |
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| 26 | PUBLIC p4z_opt_init ! called in trcsms_pisces.F90 module |
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[2715] | 27 | PUBLIC p4z_opt_alloc |
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[935] | 28 | |
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[2715] | 29 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: etot, enano, ediat !: PAR for phyto, nano and diat |
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| 30 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: emoy !: averaged PAR in the mixed layer |
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[935] | 31 | |
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[2715] | 32 | INTEGER :: nksrp ! levels below which the light cannot penetrate ( depth larger than 391 m) |
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| 33 | REAL(wp) :: parlux = 0.43_wp / 3._wp |
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[935] | 34 | |
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[2715] | 35 | REAL(wp), DIMENSION(3,61), PUBLIC :: xkrgb !: tabulated attenuation coefficients for RGB absorption |
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[1445] | 36 | |
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[935] | 37 | !!* Substitution |
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[1800] | 38 | # include "top_substitute.h90" |
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[935] | 39 | !!---------------------------------------------------------------------- |
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[2528] | 40 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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[1152] | 41 | !! $Id$ |
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[2715] | 42 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[935] | 43 | !!---------------------------------------------------------------------- |
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| 44 | CONTAINS |
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| 45 | |
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[2528] | 46 | SUBROUTINE p4z_opt( kt, jnt ) |
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[935] | 47 | !!--------------------------------------------------------------------- |
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| 48 | !! *** ROUTINE p4z_opt *** |
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| 49 | !! |
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| 50 | !! ** Purpose : Compute the light availability in the water column |
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| 51 | !! depending on the depth and the chlorophyll concentration |
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| 52 | !! |
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| 53 | !! ** Method : - ??? |
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| 54 | !!--------------------------------------------------------------------- |
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[2715] | 55 | ! |
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| 56 | INTEGER, INTENT(in) :: kt, jnt ! ocean time step |
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| 57 | ! |
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[2528] | 58 | INTEGER :: ji, jj, jk |
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[935] | 59 | INTEGER :: irgb |
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[1445] | 60 | REAL(wp) :: zchl, zxsi0r |
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[3294] | 61 | REAL(wp) :: zc0 , zc1 , zc2, zc3, z1_dep |
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| 62 | REAL(wp), POINTER, DIMENSION(:,: ) :: zdepmoy, zetmp, zetmp1, zetmp2 |
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| 63 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zekg, zekr, zekb, ze0, ze1, ze2, ze3 |
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[935] | 64 | !!--------------------------------------------------------------------- |
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[3294] | 65 | ! |
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| 66 | IF( nn_timing == 1 ) CALL timing_start('p4z_opt') |
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| 67 | ! |
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| 68 | ! Allocate temporary workspace |
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| 69 | CALL wrk_alloc( jpi, jpj, zdepmoy, zetmp, zetmp1, zetmp2 ) |
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| 70 | CALL wrk_alloc( jpi, jpj, jpk, zekg, zekr, zekb, ze0, ze1, ze2, ze3 ) |
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[935] | 71 | |
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[2528] | 72 | ! Initialisation of variables used to compute PAR |
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| 73 | ! ----------------------------------------------- |
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[2715] | 74 | ze1 (:,:,jpk) = 0._wp |
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| 75 | ze2 (:,:,jpk) = 0._wp |
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| 76 | ze3 (:,:,jpk) = 0._wp |
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[935] | 77 | |
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[1445] | 78 | ! !* attenuation coef. function of Chlorophyll and wavelength (Red-Green-Blue) |
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| 79 | DO jk = 1, jpkm1 ! -------------------------------------------------------- |
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| 80 | !CDIR NOVERRCHK |
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[935] | 81 | DO jj = 1, jpj |
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[1445] | 82 | !CDIR NOVERRCHK |
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[935] | 83 | DO ji = 1, jpi |
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| 84 | zchl = ( trn(ji,jj,jk,jpnch) + trn(ji,jj,jk,jpdch) + rtrn ) * 1.e6 |
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[3294] | 85 | zchl = MIN( 10. , MAX( 0.05, zchl ) ) |
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[1445] | 86 | irgb = NINT( 41 + 20.* LOG10( zchl ) + rtrn ) |
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| 87 | ! |
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| 88 | zekb(ji,jj,jk) = xkrgb(1,irgb) * fse3t(ji,jj,jk) |
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| 89 | zekg(ji,jj,jk) = xkrgb(2,irgb) * fse3t(ji,jj,jk) |
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| 90 | zekr(ji,jj,jk) = xkrgb(3,irgb) * fse3t(ji,jj,jk) |
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[935] | 91 | END DO |
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| 92 | END DO |
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| 93 | END DO |
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| 94 | |
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| 95 | |
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[1445] | 96 | ! !* Photosynthetically Available Radiation (PAR) |
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| 97 | ! ! -------------------------------------- |
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[935] | 98 | !CDIR NOVERRCHK |
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[1445] | 99 | DO jj = 1, jpj |
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[935] | 100 | !CDIR NOVERRCHK |
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[1445] | 101 | DO ji = 1, jpi |
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| 102 | zc1 = parlux * qsr(ji,jj) * EXP( -0.5 * zekb(ji,jj,1) ) |
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| 103 | zc2 = parlux * qsr(ji,jj) * EXP( -0.5 * zekg(ji,jj,1) ) |
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| 104 | zc3 = parlux * qsr(ji,jj) * EXP( -0.5 * zekr(ji,jj,1) ) |
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| 105 | ze1 (ji,jj,1) = zc1 |
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| 106 | ze2 (ji,jj,1) = zc2 |
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| 107 | ze3 (ji,jj,1) = zc3 |
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| 108 | etot (ji,jj,1) = ( zc1 + zc2 + zc3 ) |
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| 109 | enano(ji,jj,1) = ( 2.1 * zc1 + 0.42 * zc2 + 0.4 * zc3 ) |
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| 110 | ediat(ji,jj,1) = ( 1.6 * zc1 + 0.69 * zc2 + 0.7 * zc3 ) |
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[935] | 111 | END DO |
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| 112 | END DO |
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| 113 | |
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[1445] | 114 | |
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| 115 | DO jk = 2, nksrp |
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[935] | 116 | !CDIR NOVERRCHK |
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| 117 | DO jj = 1, jpj |
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| 118 | !CDIR NOVERRCHK |
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| 119 | DO ji = 1, jpi |
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[1445] | 120 | zc1 = ze1(ji,jj,jk-1) * EXP( -0.5 * ( zekb(ji,jj,jk-1) + zekb(ji,jj,jk) ) ) |
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| 121 | zc2 = ze2(ji,jj,jk-1) * EXP( -0.5 * ( zekg(ji,jj,jk-1) + zekg(ji,jj,jk) ) ) |
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| 122 | zc3 = ze3(ji,jj,jk-1) * EXP( -0.5 * ( zekr(ji,jj,jk-1) + zekr(ji,jj,jk) ) ) |
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| 123 | ze1 (ji,jj,jk) = zc1 |
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| 124 | ze2 (ji,jj,jk) = zc2 |
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| 125 | ze3 (ji,jj,jk) = zc3 |
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| 126 | etot (ji,jj,jk) = ( zc1 + zc2 + zc3 ) |
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| 127 | enano(ji,jj,jk) = ( 2.1 * zc1 + 0.42 * zc2 + 0.4 * zc3 ) |
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| 128 | ediat(ji,jj,jk) = ( 1.6 * zc1 + 0.69 * zc2 + 0.7 * zc3 ) |
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[935] | 129 | END DO |
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| 130 | END DO |
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[1445] | 131 | END DO |
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[935] | 132 | |
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[1445] | 133 | IF( ln_qsr_bio ) THEN !* heat flux accros w-level (used in the dynamics) |
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| 134 | ! ! ------------------------ |
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| 135 | zxsi0r = 1.e0 / rn_si0 |
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| 136 | ! |
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| 137 | ze0 (:,:,1) = rn_abs * qsr(:,:) |
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| 138 | ze1 (:,:,1) = parlux * qsr(:,:) ! surface value : separation in R-G-B + near surface |
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| 139 | ze2 (:,:,1) = parlux * qsr(:,:) |
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| 140 | ze3 (:,:,1) = parlux * qsr(:,:) |
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| 141 | etot3(:,:,1) = qsr(:,:) * tmask(:,:,1) |
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| 142 | ! |
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[3294] | 143 | DO jk = 2, nksrp + 1 |
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[935] | 144 | !CDIR NOVERRCHK |
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| 145 | DO jj = 1, jpj |
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| 146 | !CDIR NOVERRCHK |
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| 147 | DO ji = 1, jpi |
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[1445] | 148 | zc0 = ze0(ji,jj,jk-1) * EXP( -fse3t(ji,jj,jk-1) * zxsi0r ) |
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| 149 | zc1 = ze1(ji,jj,jk-1) * EXP( -zekb(ji,jj,jk-1 ) ) |
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| 150 | zc2 = ze2(ji,jj,jk-1) * EXP( -zekg(ji,jj,jk-1 ) ) |
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| 151 | zc3 = ze3(ji,jj,jk-1) * EXP( -zekr(ji,jj,jk-1 ) ) |
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| 152 | ze0(ji,jj,jk) = zc0 |
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| 153 | ze1(ji,jj,jk) = zc1 |
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| 154 | ze2(ji,jj,jk) = zc2 |
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| 155 | ze3(ji,jj,jk) = zc3 |
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| 156 | etot3(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
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| 157 | END DO |
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| 158 | ! |
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[935] | 159 | END DO |
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[1445] | 160 | ! |
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| 161 | END DO |
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| 162 | ! |
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[935] | 163 | ENDIF |
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| 164 | |
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[1445] | 165 | ! !* Euphotic depth and level |
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| 166 | neln(:,:) = 1 ! ------------------------ |
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[1180] | 167 | heup(:,:) = 300. |
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[935] | 168 | |
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[1445] | 169 | DO jk = 2, nksrp |
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[935] | 170 | DO jj = 1, jpj |
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[1180] | 171 | DO ji = 1, jpi |
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| 172 | IF( etot(ji,jj,jk) >= 0.0043 * qsr(ji,jj) ) THEN |
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[1445] | 173 | neln(ji,jj) = jk+1 ! Euphotic level : 1rst T-level strictly below Euphotic layer |
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| 174 | ! ! nb: ensure the compatibility with nmld_trc definition in trd_mld_trc_zint |
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| 175 | heup(ji,jj) = fsdepw(ji,jj,jk+1) ! Euphotic layer depth |
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| 176 | ENDIF |
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| 177 | END DO |
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[1180] | 178 | END DO |
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[1445] | 179 | END DO |
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[1180] | 180 | |
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[1445] | 181 | heup(:,:) = MIN( 300., heup(:,:) ) |
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[935] | 182 | |
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[1445] | 183 | ! !* mean light over the mixed layer |
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| 184 | zdepmoy(:,:) = 0.e0 ! ------------------------------- |
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[935] | 185 | zetmp (:,:) = 0.e0 |
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[3294] | 186 | zetmp1 (:,:) = 0.e0 |
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| 187 | zetmp2 (:,:) = 0.e0 |
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[935] | 188 | |
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[1445] | 189 | DO jk = 1, nksrp |
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| 190 | !CDIR NOVERRCHK |
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[935] | 191 | DO jj = 1, jpj |
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[1445] | 192 | !CDIR NOVERRCHK |
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[935] | 193 | DO ji = 1, jpi |
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| 194 | IF( fsdepw(ji,jj,jk+1) <= hmld(ji,jj) ) THEN |
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[3294] | 195 | zetmp (ji,jj) = zetmp (ji,jj) + etot (ji,jj,jk) * fse3t(ji,jj,jk) |
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| 196 | zetmp1 (ji,jj) = zetmp1 (ji,jj) + enano(ji,jj,jk) * fse3t(ji,jj,jk) |
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| 197 | zetmp2 (ji,jj) = zetmp2 (ji,jj) + ediat(ji,jj,jk) * fse3t(ji,jj,jk) |
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[935] | 198 | zdepmoy(ji,jj) = zdepmoy(ji,jj) + fse3t(ji,jj,jk) |
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| 199 | ENDIF |
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| 200 | END DO |
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| 201 | END DO |
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| 202 | END DO |
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[1445] | 203 | ! |
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[935] | 204 | emoy(:,:,:) = etot(:,:,:) |
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[1445] | 205 | ! |
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| 206 | DO jk = 1, nksrp |
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| 207 | !CDIR NOVERRCHK |
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[935] | 208 | DO jj = 1, jpj |
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[1445] | 209 | !CDIR NOVERRCHK |
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[935] | 210 | DO ji = 1, jpi |
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[3294] | 211 | IF( fsdepw(ji,jj,jk+1) <= hmld(ji,jj) ) THEN |
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| 212 | z1_dep = 1. / ( zdepmoy(ji,jj) + rtrn ) |
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| 213 | emoy (ji,jj,jk) = zetmp (ji,jj) * z1_dep |
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| 214 | enano(ji,jj,jk) = zetmp1(ji,jj) * z1_dep |
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| 215 | ediat(ji,jj,jk) = zetmp2(ji,jj) * z1_dep |
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| 216 | ENDIF |
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[935] | 217 | END DO |
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| 218 | END DO |
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| 219 | END DO |
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| 220 | |
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[3294] | 221 | IF( ln_diatrc ) THEN ! save output diagnostics |
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| 222 | ! |
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| 223 | IF( lk_iomput ) THEN |
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| 224 | IF( jnt == nrdttrc ) THEN |
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| 225 | CALL iom_put( "Heup", heup(:,: ) * tmask(:,:,1) ) ! euphotic layer deptht |
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| 226 | CALL iom_put( "PAR" , etot(:,:,:) * tmask(:,:,:) ) ! Photosynthetically Available Radiation |
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| 227 | ENDIF |
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| 228 | ELSE |
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| 229 | trc2d(:,:, jp_pcs0_2d + 10) = heup(:,: ) * tmask(:,:,1) |
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| 230 | trc3d(:,:,:,jp_pcs0_3d + 3) = etot(:,:,:) * tmask(:,:,:) |
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| 231 | ENDIF |
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| 232 | ! |
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[1836] | 233 | ENDIF |
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[935] | 234 | ! |
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[3294] | 235 | CALL wrk_dealloc( jpi, jpj, zdepmoy, zetmp, zetmp1, zetmp2 ) |
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| 236 | CALL wrk_dealloc( jpi, jpj, jpk, zekg, zekr, zekb, ze0, ze1, ze2, ze3 ) |
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[2715] | 237 | ! |
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[3294] | 238 | IF( nn_timing == 1 ) CALL timing_stop('p4z_opt') |
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| 239 | ! |
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[935] | 240 | END SUBROUTINE p4z_opt |
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| 241 | |
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[2715] | 242 | |
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[2528] | 243 | SUBROUTINE p4z_opt_init |
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| 244 | !!---------------------------------------------------------------------- |
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| 245 | !! *** ROUTINE p4z_opt_init *** |
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| 246 | !! |
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| 247 | !! ** Purpose : Initialization of tabulated attenuation coef |
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| 248 | !!---------------------------------------------------------------------- |
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[2715] | 249 | ! |
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[3294] | 250 | IF( nn_timing == 1 ) CALL timing_start('p4z_opt_init') |
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| 251 | ! |
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[2528] | 252 | CALL trc_oce_rgb( xkrgb ) ! tabulated attenuation coefficients |
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| 253 | nksrp = trc_oce_ext_lev( r_si2, 0.33e2 ) ! max level of light extinction (Blue Chl=0.01) |
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[2715] | 254 | ! |
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[2528] | 255 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksrp, ' ref depth = ', gdepw_0(nksrp+1), ' m' |
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| 256 | ! |
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[2715] | 257 | etot (:,:,:) = 0._wp |
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| 258 | enano(:,:,:) = 0._wp |
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| 259 | ediat(:,:,:) = 0._wp |
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| 260 | IF( ln_qsr_bio ) etot3(:,:,:) = 0._wp |
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[2528] | 261 | ! |
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[3294] | 262 | IF( nn_timing == 1 ) CALL timing_stop('p4z_opt_init') |
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| 263 | ! |
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[2528] | 264 | END SUBROUTINE p4z_opt_init |
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[2715] | 265 | |
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| 266 | |
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| 267 | INTEGER FUNCTION p4z_opt_alloc() |
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| 268 | !!---------------------------------------------------------------------- |
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| 269 | !! *** ROUTINE p4z_opt_alloc *** |
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| 270 | !!---------------------------------------------------------------------- |
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| 271 | ALLOCATE( etot (jpi,jpj,jpk) , enano(jpi,jpj,jpk) , & |
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| 272 | & ediat(jpi,jpj,jpk) , emoy (jpi,jpj,jpk) , STAT=p4z_opt_alloc ) |
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| 273 | ! |
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| 274 | IF( p4z_opt_alloc /= 0 ) CALL ctl_warn('p4z_opt_alloc : failed to allocate arrays.') |
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| 275 | ! |
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| 276 | END FUNCTION p4z_opt_alloc |
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| 277 | |
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[935] | 278 | #else |
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[1445] | 279 | !!---------------------------------------------------------------------- |
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[935] | 280 | !! Dummy module : No PISCES bio-model |
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[1445] | 281 | !!---------------------------------------------------------------------- |
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[935] | 282 | CONTAINS |
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| 283 | SUBROUTINE p4z_opt ! Empty routine |
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| 284 | END SUBROUTINE p4z_opt |
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| 285 | #endif |
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| 286 | |
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| 287 | !!====================================================================== |
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| 288 | END MODULE p4zopt |
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