[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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[935] | 9 | !!---------------------------------------------------------------------- |
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[1445] | 10 | #if defined key_pisces |
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[935] | 11 | !!---------------------------------------------------------------------- |
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| 12 | !! 'key_pisces' PISCES bio-model |
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| 13 | !!---------------------------------------------------------------------- |
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[1445] | 14 | !! p4z_opt : light availability in the water column |
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[935] | 15 | !!---------------------------------------------------------------------- |
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[1445] | 16 | USE trc ! tracer variables |
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| 17 | USE oce_trc ! tracer-ocean share variables |
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| 18 | USE sms_pisces ! Source Minus Sink of PISCES |
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[1457] | 19 | USE iom |
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[935] | 20 | |
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| 21 | IMPLICIT NONE |
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| 22 | PRIVATE |
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| 23 | |
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[2528] | 24 | PUBLIC p4z_opt ! called in p4zbio.F90 module |
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| 25 | PUBLIC p4z_opt_init ! called in trcsms_pisces.F90 module |
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[2715] | 26 | PUBLIC p4z_opt_alloc |
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[935] | 27 | |
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[2715] | 28 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: etot, enano, ediat !: PAR for phyto, nano and diat |
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| 29 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: emoy !: averaged PAR in the mixed layer |
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[935] | 30 | |
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[2715] | 31 | INTEGER :: nksrp ! levels below which the light cannot penetrate ( depth larger than 391 m) |
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| 32 | REAL(wp) :: parlux = 0.43_wp / 3._wp |
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[935] | 33 | |
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[2715] | 34 | REAL(wp), DIMENSION(3,61), PUBLIC :: xkrgb !: tabulated attenuation coefficients for RGB absorption |
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[1445] | 35 | |
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[935] | 36 | !!* Substitution |
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[1800] | 37 | # include "top_substitute.h90" |
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[935] | 38 | !!---------------------------------------------------------------------- |
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[2528] | 39 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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[1152] | 40 | !! $Id$ |
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[2715] | 41 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[935] | 42 | !!---------------------------------------------------------------------- |
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| 43 | CONTAINS |
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| 44 | |
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[2528] | 45 | SUBROUTINE p4z_opt( kt, jnt ) |
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[935] | 46 | !!--------------------------------------------------------------------- |
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| 47 | !! *** ROUTINE p4z_opt *** |
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| 48 | !! |
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| 49 | !! ** Purpose : Compute the light availability in the water column |
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| 50 | !! depending on the depth and the chlorophyll concentration |
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| 51 | !! |
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| 52 | !! ** Method : - ??? |
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| 53 | !!--------------------------------------------------------------------- |
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[2715] | 54 | USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released |
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| 55 | USE wrk_nemo, ONLY: zdepmoy => wrk_2d_1 , zetmp => wrk_2d_2 |
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| 56 | USE wrk_nemo, ONLY: zekg => wrk_3d_2 , zekr => wrk_3d_3 , zekb => wrk_3d_4 |
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| 57 | USE wrk_nemo, ONLY: ze0 => wrk_3d_5 , ze1 => wrk_3d_6 |
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| 58 | USE wrk_nemo, ONLY: ze2 => wrk_3d_7 , ze3 => wrk_3d_8 |
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| 59 | ! |
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| 60 | INTEGER, INTENT(in) :: kt, jnt ! ocean time step |
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| 61 | ! |
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[2528] | 62 | INTEGER :: ji, jj, jk |
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[935] | 63 | INTEGER :: irgb |
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[1445] | 64 | REAL(wp) :: zchl, zxsi0r |
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| 65 | REAL(wp) :: zc0 , zc1 , zc2, zc3 |
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[935] | 66 | !!--------------------------------------------------------------------- |
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| 67 | |
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[2715] | 68 | IF( wrk_in_use(2, 1,2) .OR. wrk_in_use(3, 2,3,4,5,6,7,8) ) THEN |
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| 69 | CALL ctl_stop('p4z_opt: requested workspace arrays unavailable') ; RETURN |
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| 70 | ENDIF |
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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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[1445] | 85 | zchl = MIN( 10. , MAX( 0.03, zchl ) ) |
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| 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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[1445] | 95 | !!gm Potential BUG must discuss with Olivier about this implementation.... |
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| 96 | !!gm the questions are : - PAR at T-point or mean PAR over T-level.... |
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| 97 | !!gm - shallow water: no penetration of light through the bottom.... |
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[935] | 98 | |
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| 99 | |
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[1445] | 100 | ! !* Photosynthetically Available Radiation (PAR) |
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| 101 | ! ! -------------------------------------- |
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[935] | 102 | !CDIR NOVERRCHK |
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[1445] | 103 | DO jj = 1, jpj |
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[935] | 104 | !CDIR NOVERRCHK |
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[1445] | 105 | DO ji = 1, jpi |
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| 106 | zc1 = parlux * qsr(ji,jj) * EXP( -0.5 * zekb(ji,jj,1) ) |
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| 107 | zc2 = parlux * qsr(ji,jj) * EXP( -0.5 * zekg(ji,jj,1) ) |
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| 108 | zc3 = parlux * qsr(ji,jj) * EXP( -0.5 * zekr(ji,jj,1) ) |
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| 109 | ze1 (ji,jj,1) = zc1 |
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| 110 | ze2 (ji,jj,1) = zc2 |
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| 111 | ze3 (ji,jj,1) = zc3 |
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| 112 | etot (ji,jj,1) = ( zc1 + zc2 + zc3 ) |
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| 113 | enano(ji,jj,1) = ( 2.1 * zc1 + 0.42 * zc2 + 0.4 * zc3 ) |
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| 114 | ediat(ji,jj,1) = ( 1.6 * zc1 + 0.69 * zc2 + 0.7 * zc3 ) |
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[935] | 115 | END DO |
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| 116 | END DO |
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| 117 | |
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[1445] | 118 | |
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| 119 | DO jk = 2, nksrp |
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[935] | 120 | !CDIR NOVERRCHK |
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| 121 | DO jj = 1, jpj |
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| 122 | !CDIR NOVERRCHK |
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| 123 | DO ji = 1, jpi |
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[1445] | 124 | zc1 = ze1(ji,jj,jk-1) * EXP( -0.5 * ( zekb(ji,jj,jk-1) + zekb(ji,jj,jk) ) ) |
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| 125 | zc2 = ze2(ji,jj,jk-1) * EXP( -0.5 * ( zekg(ji,jj,jk-1) + zekg(ji,jj,jk) ) ) |
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| 126 | zc3 = ze3(ji,jj,jk-1) * EXP( -0.5 * ( zekr(ji,jj,jk-1) + zekr(ji,jj,jk) ) ) |
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| 127 | ze1 (ji,jj,jk) = zc1 |
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| 128 | ze2 (ji,jj,jk) = zc2 |
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| 129 | ze3 (ji,jj,jk) = zc3 |
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| 130 | etot (ji,jj,jk) = ( zc1 + zc2 + zc3 ) |
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| 131 | enano(ji,jj,jk) = ( 2.1 * zc1 + 0.42 * zc2 + 0.4 * zc3 ) |
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| 132 | ediat(ji,jj,jk) = ( 1.6 * zc1 + 0.69 * zc2 + 0.7 * zc3 ) |
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[935] | 133 | END DO |
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| 134 | END DO |
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[1445] | 135 | END DO |
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[935] | 136 | |
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[1445] | 137 | IF( ln_qsr_bio ) THEN !* heat flux accros w-level (used in the dynamics) |
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| 138 | ! ! ------------------------ |
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| 139 | zxsi0r = 1.e0 / rn_si0 |
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| 140 | ! |
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| 141 | ze0 (:,:,1) = rn_abs * qsr(:,:) |
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| 142 | ze1 (:,:,1) = parlux * qsr(:,:) ! surface value : separation in R-G-B + near surface |
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| 143 | ze2 (:,:,1) = parlux * qsr(:,:) |
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| 144 | ze3 (:,:,1) = parlux * qsr(:,:) |
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| 145 | etot3(:,:,1) = qsr(:,:) * tmask(:,:,1) |
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| 146 | ! |
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| 147 | DO jk = 2, nksrp+1 |
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[935] | 148 | !CDIR NOVERRCHK |
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| 149 | DO jj = 1, jpj |
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| 150 | !CDIR NOVERRCHK |
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| 151 | DO ji = 1, jpi |
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[1445] | 152 | zc0 = ze0(ji,jj,jk-1) * EXP( -fse3t(ji,jj,jk-1) * zxsi0r ) |
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| 153 | zc1 = ze1(ji,jj,jk-1) * EXP( -zekb(ji,jj,jk-1 ) ) |
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| 154 | zc2 = ze2(ji,jj,jk-1) * EXP( -zekg(ji,jj,jk-1 ) ) |
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| 155 | zc3 = ze3(ji,jj,jk-1) * EXP( -zekr(ji,jj,jk-1 ) ) |
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| 156 | ze0(ji,jj,jk) = zc0 |
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| 157 | ze1(ji,jj,jk) = zc1 |
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| 158 | ze2(ji,jj,jk) = zc2 |
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| 159 | ze3(ji,jj,jk) = zc3 |
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| 160 | etot3(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
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| 161 | END DO |
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| 162 | ! |
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[935] | 163 | END DO |
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[1445] | 164 | ! |
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| 165 | END DO |
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| 166 | ! |
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[935] | 167 | ENDIF |
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| 168 | |
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[1445] | 169 | ! !* Euphotic depth and level |
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| 170 | neln(:,:) = 1 ! ------------------------ |
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[1180] | 171 | heup(:,:) = 300. |
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[935] | 172 | |
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[1445] | 173 | DO jk = 2, nksrp |
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[935] | 174 | DO jj = 1, jpj |
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[1180] | 175 | DO ji = 1, jpi |
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| 176 | IF( etot(ji,jj,jk) >= 0.0043 * qsr(ji,jj) ) THEN |
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[1445] | 177 | neln(ji,jj) = jk+1 ! Euphotic level : 1rst T-level strictly below Euphotic layer |
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| 178 | ! ! nb: ensure the compatibility with nmld_trc definition in trd_mld_trc_zint |
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| 179 | heup(ji,jj) = fsdepw(ji,jj,jk+1) ! Euphotic layer depth |
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| 180 | ENDIF |
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| 181 | END DO |
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[1180] | 182 | END DO |
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[1445] | 183 | END DO |
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[1180] | 184 | |
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[1445] | 185 | heup(:,:) = MIN( 300., heup(:,:) ) |
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[935] | 186 | |
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[1445] | 187 | ! !* mean light over the mixed layer |
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| 188 | zdepmoy(:,:) = 0.e0 ! ------------------------------- |
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[935] | 189 | zetmp (:,:) = 0.e0 |
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| 190 | emoy (:,:,:) = 0.e0 |
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| 191 | |
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[1445] | 192 | DO jk = 1, nksrp |
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| 193 | !CDIR NOVERRCHK |
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[935] | 194 | DO jj = 1, jpj |
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[1445] | 195 | !CDIR NOVERRCHK |
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[935] | 196 | DO ji = 1, jpi |
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| 197 | IF( fsdepw(ji,jj,jk+1) <= hmld(ji,jj) ) THEN |
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| 198 | zetmp (ji,jj) = zetmp (ji,jj) + etot(ji,jj,jk) * fse3t(ji,jj,jk) |
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| 199 | zdepmoy(ji,jj) = zdepmoy(ji,jj) + fse3t(ji,jj,jk) |
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| 200 | ENDIF |
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| 201 | END DO |
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| 202 | END DO |
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| 203 | END DO |
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[1445] | 204 | ! |
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[935] | 205 | emoy(:,:,:) = etot(:,:,:) |
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[1445] | 206 | ! |
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| 207 | DO jk = 1, nksrp |
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| 208 | !CDIR NOVERRCHK |
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[935] | 209 | DO jj = 1, jpj |
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[1445] | 210 | !CDIR NOVERRCHK |
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[935] | 211 | DO ji = 1, jpi |
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[2715] | 212 | IF( fsdepw(ji,jj,jk+1) <= hmld(ji,jj) ) emoy(ji,jj,jk) = zetmp(ji,jj) / ( zdepmoy(ji,jj) + rtrn ) |
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[935] | 213 | END DO |
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| 214 | END DO |
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| 215 | END DO |
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| 216 | |
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[2528] | 217 | #if defined key_diatrc |
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[1457] | 218 | # if ! defined key_iomput |
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| 219 | ! save for outputs |
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| 220 | trc2d(:,:, jp_pcs0_2d + 10) = heup(:,: ) * tmask(:,:,1) |
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| 221 | trc3d(:,:,:,jp_pcs0_3d + 3) = etot(:,:,:) * tmask(:,:,:) |
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| 222 | # else |
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| 223 | ! write diagnostics |
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[1836] | 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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[935] | 228 | # endif |
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[1457] | 229 | #endif |
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[935] | 230 | ! |
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[2715] | 231 | IF( wrk_not_released(2, 1,2) .OR. & |
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| 232 | wrk_not_released(3, 2,3,4,5,6,7,8) ) CALL ctl_stop('p4z_opt: failed to release workspace arrays') |
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| 233 | ! |
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[935] | 234 | END SUBROUTINE p4z_opt |
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| 235 | |
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[2715] | 236 | |
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[2528] | 237 | SUBROUTINE p4z_opt_init |
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| 238 | !!---------------------------------------------------------------------- |
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| 239 | !! *** ROUTINE p4z_opt_init *** |
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| 240 | !! |
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| 241 | !! ** Purpose : Initialization of tabulated attenuation coef |
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| 242 | !!---------------------------------------------------------------------- |
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[2715] | 243 | ! |
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[2528] | 244 | CALL trc_oce_rgb( xkrgb ) ! tabulated attenuation coefficients |
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| 245 | nksrp = trc_oce_ext_lev( r_si2, 0.33e2 ) ! max level of light extinction (Blue Chl=0.01) |
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[2715] | 246 | ! |
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[2528] | 247 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksrp, ' ref depth = ', gdepw_0(nksrp+1), ' m' |
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| 248 | ! |
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[2715] | 249 | etot (:,:,:) = 0._wp |
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| 250 | enano(:,:,:) = 0._wp |
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| 251 | ediat(:,:,:) = 0._wp |
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| 252 | IF( ln_qsr_bio ) etot3(:,:,:) = 0._wp |
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[2528] | 253 | ! |
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| 254 | END SUBROUTINE p4z_opt_init |
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[2715] | 255 | |
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| 256 | |
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| 257 | INTEGER FUNCTION p4z_opt_alloc() |
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| 258 | !!---------------------------------------------------------------------- |
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| 259 | !! *** ROUTINE p4z_opt_alloc *** |
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| 260 | !!---------------------------------------------------------------------- |
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| 261 | ALLOCATE( etot (jpi,jpj,jpk) , enano(jpi,jpj,jpk) , & |
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| 262 | & ediat(jpi,jpj,jpk) , emoy (jpi,jpj,jpk) , STAT=p4z_opt_alloc ) |
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| 263 | ! |
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| 264 | IF( p4z_opt_alloc /= 0 ) CALL ctl_warn('p4z_opt_alloc : failed to allocate arrays.') |
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| 265 | ! |
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| 266 | END FUNCTION p4z_opt_alloc |
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| 267 | |
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[935] | 268 | #else |
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[1445] | 269 | !!---------------------------------------------------------------------- |
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[935] | 270 | !! Dummy module : No PISCES bio-model |
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[1445] | 271 | !!---------------------------------------------------------------------- |
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[935] | 272 | CONTAINS |
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| 273 | SUBROUTINE p4z_opt ! Empty routine |
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| 274 | END SUBROUTINE p4z_opt |
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| 275 | #endif |
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| 276 | |
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| 277 | !!====================================================================== |
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| 278 | END MODULE p4zopt |
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