[3] | 1 | MODULE traqsr |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE traqsr *** |
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| 4 | !! Ocean physics: solar radiation penetration in the top ocean levels |
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| 5 | !!====================================================================== |
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[1423] | 6 | !! History : OPA ! 1990-10 (B. Blanke) Original code |
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| 7 | !! 7.0 ! 1991-11 (G. Madec) |
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| 8 | !! ! 1996-01 (G. Madec) s-coordinates |
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| 9 | !! NEMO 1.0 ! 2002-06 (G. Madec) F90: Free form and module |
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| 10 | !! - ! 2005-11 (G. Madec) zco, zps, sco coordinate |
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| 11 | !! 3.2 ! 2009-04 (G. Madec & NEMO team) |
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[3] | 12 | !!---------------------------------------------------------------------- |
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[503] | 13 | |
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| 14 | !!---------------------------------------------------------------------- |
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[3] | 15 | !! tra_qsr : trend due to the solar radiation penetration |
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| 16 | !! tra_qsr_init : solar radiation penetration initialization |
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| 17 | !!---------------------------------------------------------------------- |
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| 18 | USE oce ! ocean dynamics and active tracers |
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| 19 | USE dom_oce ! ocean space and time domain |
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[888] | 20 | USE sbc_oce ! surface boundary condition: ocean |
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| 21 | USE trc_oce ! share SMS/Ocean variables |
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| 22 | USE trdmod_oce ! ocean variables trends |
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[2528] | 23 | USE trdtra ! ocean active tracers trends |
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[3] | 24 | USE in_out_manager ! I/O manager |
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| 25 | USE phycst ! physical constants |
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[258] | 26 | USE prtctl ! Print control |
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[1423] | 27 | USE iom ! I/O manager |
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| 28 | USE fldread ! read input fields |
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[2715] | 29 | USE lib_mpp ! MPP library |
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[3294] | 30 | USE wrk_nemo ! Memory Allocation |
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| 31 | USE timing ! Timing |
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[3] | 32 | |
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[3294] | 33 | |
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[3] | 34 | IMPLICIT NONE |
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| 35 | PRIVATE |
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| 36 | |
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[2528] | 37 | PUBLIC tra_qsr ! routine called by step.F90 (ln_traqsr=T) |
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| 38 | PUBLIC tra_qsr_init ! routine called by opa.F90 |
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[3] | 39 | |
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[4147] | 40 | ! !!* Namelist namtra_qsr: penetrative solar radiation |
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| 41 | LOGICAL , PUBLIC :: ln_traqsr !: light absorption (qsr) flag |
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| 42 | LOGICAL , PUBLIC :: ln_qsr_rgb !: Red-Green-Blue light absorption flag |
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| 43 | LOGICAL , PUBLIC :: ln_qsr_2bd !: 2 band light absorption flag |
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| 44 | LOGICAL , PUBLIC :: ln_qsr_bio !: bio-model light absorption flag |
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| 45 | INTEGER , PUBLIC :: nn_chldta !: use Chlorophyll data (=1) or not (=0) |
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| 46 | REAL(wp), PUBLIC :: rn_abs !: fraction absorbed in the very near surface (RGB & 2 bands) |
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| 47 | REAL(wp), PUBLIC :: rn_si0 !: very near surface depth of extinction (RGB & 2 bands) |
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| 48 | REAL(wp), PUBLIC :: rn_si1 !: deepest depth of extinction (water type I) (2 bands) |
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[187] | 49 | |
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[1445] | 50 | ! Module variables |
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[2528] | 51 | REAL(wp) :: xsi0r !: inverse of rn_si0 |
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| 52 | REAL(wp) :: xsi1r !: inverse of rn_si1 |
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[1423] | 53 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_chl ! structure of input Chl (file informations, fields read) |
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[2528] | 54 | INTEGER, PUBLIC :: nksr ! levels below which the light cannot penetrate ( depth larger than 391 m) |
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[1445] | 55 | REAL(wp), DIMENSION(3,61) :: rkrgb !: tabulated attenuation coefficients for RGB absorption |
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[3] | 56 | |
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| 57 | !! * Substitutions |
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| 58 | # include "domzgr_substitute.h90" |
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| 59 | # include "vectopt_loop_substitute.h90" |
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| 60 | !!---------------------------------------------------------------------- |
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[2528] | 61 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[888] | 62 | !! $Id$ |
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[2715] | 63 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[3] | 64 | !!---------------------------------------------------------------------- |
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| 65 | CONTAINS |
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| 66 | |
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| 67 | SUBROUTINE tra_qsr( kt ) |
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| 68 | !!---------------------------------------------------------------------- |
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| 69 | !! *** ROUTINE tra_qsr *** |
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| 70 | !! |
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| 71 | !! ** Purpose : Compute the temperature trend due to the solar radiation |
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| 72 | !! penetration and add it to the general temperature trend. |
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| 73 | !! |
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[1423] | 74 | !! ** Method : The profile of the solar radiation within the ocean is defined |
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| 75 | !! through 2 wavebands (rn_si0,rn_si1) or 3 wavebands (RGB) and a ratio rn_abs |
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| 76 | !! Considering the 2 wavebands case: |
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| 77 | !! I(k) = Qsr*( rn_abs*EXP(z(k)/rn_si0) + (1.-rn_abs)*EXP(z(k)/rn_si1) ) |
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| 78 | !! The temperature trend associated with the solar radiation penetration |
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| 79 | !! is given by : zta = 1/e3t dk[ I ] / (rau0*Cp) |
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[3] | 80 | !! At the bottom, boudary condition for the radiation is no flux : |
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| 81 | !! all heat which has not been absorbed in the above levels is put |
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| 82 | !! in the last ocean level. |
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| 83 | !! In z-coordinate case, the computation is only done down to the |
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| 84 | !! level where I(k) < 1.e-15 W/m2. In addition, the coefficients |
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| 85 | !! used for the computation are calculated one for once as they |
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| 86 | !! depends on k only. |
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| 87 | !! |
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| 88 | !! ** Action : - update ta with the penetrative solar radiation trend |
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| 89 | !! - save the trend in ttrd ('key_trdtra') |
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[1423] | 90 | !! |
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| 91 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
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| 92 | !! Lengaigne et al. 2007, Clim. Dyn., V28, 5, 503-516. |
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[503] | 93 | !!---------------------------------------------------------------------- |
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[2715] | 94 | ! |
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[503] | 95 | INTEGER, INTENT(in) :: kt ! ocean time-step |
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[2715] | 96 | ! |
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[1423] | 97 | INTEGER :: ji, jj, jk ! dummy loop indices |
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[2715] | 98 | INTEGER :: irgb ! local integers |
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| 99 | REAL(wp) :: zchl, zcoef, zfact ! local scalars |
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[1423] | 100 | REAL(wp) :: zc0, zc1, zc2, zc3 ! - - |
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[2715] | 101 | REAL(wp) :: zz0, zz1, z1_e3t ! - - |
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[3294] | 102 | REAL(wp), POINTER, DIMENSION(:,: ) :: zekb, zekg, zekr |
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| 103 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ze0, ze1, ze2, ze3, zea, ztrdt |
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[3] | 104 | !!---------------------------------------------------------------------- |
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[3294] | 105 | ! |
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| 106 | IF( nn_timing == 1 ) CALL timing_start('tra_qsr') |
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| 107 | ! |
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| 108 | CALL wrk_alloc( jpi, jpj, zekb, zekg, zekr ) |
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| 109 | CALL wrk_alloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) |
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| 110 | ! |
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[3] | 111 | IF( kt == nit000 ) THEN |
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[503] | 112 | IF(lwp) WRITE(numout,*) |
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| 113 | IF(lwp) WRITE(numout,*) 'tra_qsr : penetration of the surface solar radiation' |
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| 114 | IF(lwp) WRITE(numout,*) '~~~~~~~' |
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[1423] | 115 | IF( .NOT.ln_traqsr ) RETURN |
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[3] | 116 | ENDIF |
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| 117 | |
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[503] | 118 | IF( l_trdtra ) THEN ! Save ta and sa trends |
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[3294] | 119 | CALL wrk_alloc( jpi, jpj, jpk, ztrdt ) |
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| 120 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) |
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[216] | 121 | ENDIF |
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| 122 | |
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[2528] | 123 | ! Set before qsr tracer content field |
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| 124 | ! *********************************** |
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| 125 | IF( kt == nit000 ) THEN ! Set the forcing field at nit000 - 1 |
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| 126 | ! ! ----------------------------------- |
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| 127 | IF( ln_rstart .AND. & ! Restart: read in restart file |
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| 128 | & iom_varid( numror, 'qsr_hc_b', ldstop = .FALSE. ) > 0 ) THEN |
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| 129 | IF(lwp) WRITE(numout,*) ' nit000-1 qsr tracer content forcing field red in the restart file' |
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| 130 | zfact = 0.5e0 |
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| 131 | CALL iom_get( numror, jpdom_autoglo, 'qsr_hc_b', qsr_hc_b ) ! before heat content trend due to Qsr flux |
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| 132 | ELSE ! No restart or restart not found: Euler forward time stepping |
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| 133 | zfact = 1.e0 |
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| 134 | qsr_hc_b(:,:,:) = 0.e0 |
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| 135 | ENDIF |
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| 136 | ELSE ! Swap of forcing field |
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| 137 | ! ! --------------------- |
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| 138 | zfact = 0.5e0 |
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| 139 | qsr_hc_b(:,:,:) = qsr_hc(:,:,:) |
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| 140 | ENDIF |
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| 141 | ! Compute now qsr tracer content field |
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| 142 | ! ************************************ |
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[1423] | 143 | |
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| 144 | ! ! ============================================== ! |
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[1445] | 145 | IF( lk_qsr_bio .AND. ln_qsr_bio ) THEN ! bio-model fluxes : all vertical coordinates ! |
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[1423] | 146 | ! ! ============================================== ! |
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| 147 | DO jk = 1, jpkm1 |
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[3625] | 148 | qsr_hc(:,:,jk) = r1_rau0_rcp * ( etot3(:,:,jk) - etot3(:,:,jk+1) ) |
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[2528] | 149 | END DO |
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| 150 | ! Add to the general trend |
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| 151 | DO jk = 1, jpkm1 |
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| 152 | DO jj = 2, jpjm1 |
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[3] | 153 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[2528] | 154 | z1_e3t = zfact / fse3t(ji,jj,jk) |
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| 155 | tsa(ji,jj,jk,jp_tem) = tsa(ji,jj,jk,jp_tem) + ( qsr_hc_b(ji,jj,jk) + qsr_hc(ji,jj,jk) ) * z1_e3t |
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[3] | 156 | END DO |
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| 157 | END DO |
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[1423] | 158 | END DO |
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[1756] | 159 | CALL iom_put( 'qsr3d', etot3 ) ! Shortwave Radiation 3D distribution |
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[1423] | 160 | ! ! ============================================== ! |
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| 161 | ELSE ! Ocean alone : |
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| 162 | ! ! ============================================== ! |
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| 163 | ! |
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| 164 | ! ! ------------------------- ! |
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| 165 | IF( ln_qsr_rgb) THEN ! R-G-B light penetration ! |
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| 166 | ! ! ------------------------- ! |
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| 167 | ! Set chlorophyl concentration |
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[2528] | 168 | IF( nn_chldta == 1 .OR. lk_vvl ) THEN !* Variable Chlorophyll or ocean volume |
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[1423] | 169 | ! |
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[2528] | 170 | IF( nn_chldta == 1 ) THEN !* Variable Chlorophyll |
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| 171 | ! |
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| 172 | CALL fld_read( kt, 1, sf_chl ) ! Read Chl data and provides it at the current time step |
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| 173 | ! |
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[1423] | 174 | !CDIR COLLAPSE |
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| 175 | !CDIR NOVERRCHK |
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[2528] | 176 | DO jj = 1, jpj ! Separation in R-G-B depending of the surface Chl |
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[1423] | 177 | !CDIR NOVERRCHK |
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[2528] | 178 | DO ji = 1, jpi |
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| 179 | zchl = MIN( 10. , MAX( 0.03, sf_chl(1)%fnow(ji,jj,1) ) ) |
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| 180 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
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| 181 | zekb(ji,jj) = rkrgb(1,irgb) |
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| 182 | zekg(ji,jj) = rkrgb(2,irgb) |
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| 183 | zekr(ji,jj) = rkrgb(3,irgb) |
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| 184 | END DO |
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[187] | 185 | END DO |
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[2528] | 186 | ELSE ! Variable ocean volume but constant chrlorophyll |
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| 187 | zchl = 0.05 ! constant chlorophyll |
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| 188 | irgb = NINT( 41 + 20.*LOG10( zchl ) + 1.e-15 ) |
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| 189 | zekb(:,:) = rkrgb(1,irgb) ! Separation in R-G-B depending of the chlorophyll |
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| 190 | zekg(:,:) = rkrgb(2,irgb) |
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| 191 | zekr(:,:) = rkrgb(3,irgb) |
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| 192 | ENDIF |
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[1423] | 193 | ! |
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| 194 | zcoef = ( 1. - rn_abs ) / 3.e0 ! equi-partition in R-G-B |
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| 195 | ze0(:,:,1) = rn_abs * qsr(:,:) |
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| 196 | ze1(:,:,1) = zcoef * qsr(:,:) |
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| 197 | ze2(:,:,1) = zcoef * qsr(:,:) |
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| 198 | ze3(:,:,1) = zcoef * qsr(:,:) |
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| 199 | zea(:,:,1) = qsr(:,:) |
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| 200 | ! |
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| 201 | DO jk = 2, nksr+1 |
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| 202 | !CDIR NOVERRCHK |
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| 203 | DO jj = 1, jpj |
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| 204 | !CDIR NOVERRCHK |
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| 205 | DO ji = 1, jpi |
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[2528] | 206 | zc0 = ze0(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * xsi0r ) |
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[1423] | 207 | zc1 = ze1(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekb(ji,jj) ) |
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| 208 | zc2 = ze2(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekg(ji,jj) ) |
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| 209 | zc3 = ze3(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekr(ji,jj) ) |
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| 210 | ze0(ji,jj,jk) = zc0 |
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| 211 | ze1(ji,jj,jk) = zc1 |
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| 212 | ze2(ji,jj,jk) = zc2 |
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| 213 | ze3(ji,jj,jk) = zc3 |
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| 214 | zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
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| 215 | END DO |
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| 216 | END DO |
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| 217 | END DO |
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| 218 | ! |
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| 219 | DO jk = 1, nksr ! compute and add qsr trend to ta |
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[3625] | 220 | qsr_hc(:,:,jk) = r1_rau0_rcp * ( zea(:,:,jk) - zea(:,:,jk+1) ) |
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[1423] | 221 | END DO |
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[1756] | 222 | zea(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
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| 223 | CALL iom_put( 'qsr3d', zea ) ! Shortwave Radiation 3D distribution |
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[1423] | 224 | ! |
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| 225 | ELSE !* Constant Chlorophyll |
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| 226 | DO jk = 1, nksr |
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[2528] | 227 | qsr_hc(:,:,jk) = etot3(:,:,jk) * qsr(:,:) |
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[1423] | 228 | END DO |
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| 229 | ENDIF |
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| 230 | |
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[1448] | 231 | ENDIF |
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| 232 | ! ! ------------------------- ! |
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| 233 | IF( ln_qsr_2bd ) THEN ! 2 band light penetration ! |
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[1423] | 234 | ! ! ------------------------- ! |
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| 235 | ! |
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[2528] | 236 | IF( lk_vvl ) THEN !* variable volume |
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[3625] | 237 | zz0 = rn_abs * r1_rau0_rcp |
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| 238 | zz1 = ( 1. - rn_abs ) * r1_rau0_rcp |
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[2528] | 239 | DO jk = 1, nksr ! solar heat absorbed at T-point in the top 400m |
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[3294] | 240 | DO jj = 1, jpj |
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| 241 | DO ji = 1, jpi |
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[2528] | 242 | zc0 = zz0 * EXP( -fsdepw(ji,jj,jk )*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk )*xsi1r ) |
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| 243 | zc1 = zz0 * EXP( -fsdepw(ji,jj,jk+1)*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk+1)*xsi1r ) |
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| 244 | qsr_hc(ji,jj,jk) = qsr(ji,jj) * ( zc0*tmask(ji,jj,jk) - zc1*tmask(ji,jj,jk+1) ) |
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| 245 | END DO |
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[187] | 246 | END DO |
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| 247 | END DO |
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[2528] | 248 | ELSE !* constant volume: coef. computed one for all |
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| 249 | DO jk = 1, nksr |
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| 250 | DO jj = 2, jpjm1 |
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| 251 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 252 | qsr_hc(ji,jj,jk) = etot3(ji,jj,jk) * qsr(ji,jj) |
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| 253 | END DO |
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| 254 | END DO |
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| 255 | END DO |
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| 256 | ! |
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| 257 | ENDIF |
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[1423] | 258 | ! |
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[187] | 259 | ENDIF |
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| 260 | ! |
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[2528] | 261 | ! Add to the general trend |
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| 262 | DO jk = 1, nksr |
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| 263 | DO jj = 2, jpjm1 |
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| 264 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 265 | z1_e3t = zfact / fse3t(ji,jj,jk) |
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| 266 | tsa(ji,jj,jk,jp_tem) = tsa(ji,jj,jk,jp_tem) + ( qsr_hc_b(ji,jj,jk) + qsr_hc(ji,jj,jk) ) * z1_e3t |
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| 267 | END DO |
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| 268 | END DO |
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| 269 | END DO |
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| 270 | ! |
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[3] | 271 | ENDIF |
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[2528] | 272 | ! |
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| 273 | IF( lrst_oce ) THEN ! Write in the ocean restart file |
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| 274 | ! ******************************* |
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| 275 | IF(lwp) WRITE(numout,*) |
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| 276 | IF(lwp) WRITE(numout,*) 'qsr tracer content forcing field written in ocean restart file ', & |
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| 277 | & 'at it= ', kt,' date= ', ndastp |
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| 278 | IF(lwp) WRITE(numout,*) '~~~~' |
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| 279 | CALL iom_rstput( kt, nitrst, numrow, 'qsr_hc_b', qsr_hc ) |
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| 280 | ! |
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| 281 | ENDIF |
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[3] | 282 | |
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[503] | 283 | IF( l_trdtra ) THEN ! qsr tracers trends saved for diagnostics |
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[2528] | 284 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) - ztrdt(:,:,:) |
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| 285 | CALL trd_tra( kt, 'TRA', jp_tem, jptra_trd_qsr, ztrdt ) |
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[3294] | 286 | CALL wrk_dealloc( jpi, jpj, jpk, ztrdt ) |
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[3] | 287 | ENDIF |
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[457] | 288 | ! ! print mean trends (used for debugging) |
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[2528] | 289 | IF(ln_ctl) CALL prt_ctl( tab3d_1=tsa(:,:,:,jp_tem), clinfo1=' qsr - Ta: ', mask1=tmask, clinfo3='tra-ta' ) |
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[503] | 290 | ! |
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[3294] | 291 | CALL wrk_dealloc( jpi, jpj, zekb, zekg, zekr ) |
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| 292 | CALL wrk_dealloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) |
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[2715] | 293 | ! |
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[3294] | 294 | IF( nn_timing == 1 ) CALL timing_stop('tra_qsr') |
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| 295 | ! |
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[3] | 296 | END SUBROUTINE tra_qsr |
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| 297 | |
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| 298 | |
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| 299 | SUBROUTINE tra_qsr_init |
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| 300 | !!---------------------------------------------------------------------- |
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| 301 | !! *** ROUTINE tra_qsr_init *** |
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| 302 | !! |
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| 303 | !! ** Purpose : Initialization for the penetrative solar radiation |
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| 304 | !! |
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| 305 | !! ** Method : The profile of solar radiation within the ocean is set |
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[1423] | 306 | !! from two length scale of penetration (rn_si0,rn_si1) and a ratio |
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[1601] | 307 | !! (rn_abs). These parameters are read in the namtra_qsr namelist. The |
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[3] | 308 | !! default values correspond to clear water (type I in Jerlov' |
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| 309 | !! (1968) classification. |
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| 310 | !! called by tra_qsr at the first timestep (nit000) |
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| 311 | !! |
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[1423] | 312 | !! ** Action : - initialize rn_si0, rn_si1 and rn_abs |
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[3] | 313 | !! |
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[503] | 314 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
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[3] | 315 | !!---------------------------------------------------------------------- |
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[2715] | 316 | ! |
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[4147] | 317 | INTEGER :: ji, jj, jk ! dummy loop indices |
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[2715] | 318 | INTEGER :: irgb, ierror, ioptio, nqsr ! local integer |
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[4147] | 319 | INTEGER :: ios ! Local integer output status for namelist read |
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[2715] | 320 | REAL(wp) :: zz0, zc0 , zc1, zcoef ! local scalars |
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| 321 | REAL(wp) :: zz1, zc2 , zc3, zchl ! - - |
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[3294] | 322 | REAL(wp), POINTER, DIMENSION(:,: ) :: zekb, zekg, zekr |
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| 323 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ze0, ze1, ze2, ze3, zea |
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[2715] | 324 | ! |
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[1423] | 325 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files |
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| 326 | TYPE(FLD_N) :: sn_chl ! informations about the chlorofyl field to be read |
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[2715] | 327 | !! |
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[1601] | 328 | NAMELIST/namtra_qsr/ sn_chl, cn_dir, ln_traqsr, ln_qsr_rgb, ln_qsr_2bd, ln_qsr_bio, & |
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[2528] | 329 | & nn_chldta, rn_abs, rn_si0, rn_si1 |
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[3] | 330 | !!---------------------------------------------------------------------- |
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| 331 | |
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[3294] | 332 | ! |
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| 333 | IF( nn_timing == 1 ) CALL timing_start('tra_qsr_init') |
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| 334 | ! |
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| 335 | CALL wrk_alloc( jpi, jpj, zekb, zekg, zekr ) |
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| 336 | CALL wrk_alloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) |
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| 337 | ! |
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[2715] | 338 | |
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[4147] | 339 | REWIND( numnam_ref ) ! Namelist namtra_qsr in reference namelist : Ratio and length of penetration |
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| 340 | READ ( numnam_ref, namtra_qsr, IOSTAT = ios, ERR = 901) |
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| 341 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_qsr in reference namelist', lwp ) |
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| 342 | |
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| 343 | REWIND( numnam_cfg ) ! Namelist namtra_qsr in configuration namelist : Ratio and length of penetration |
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| 344 | READ ( numnam_cfg, namtra_qsr, IOSTAT = ios, ERR = 902 ) |
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| 345 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_qsr in configuration namelist', lwp ) |
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| 346 | WRITE ( numond, namtra_qsr ) |
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[1423] | 347 | ! |
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| 348 | IF(lwp) THEN ! control print |
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| 349 | WRITE(numout,*) |
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| 350 | WRITE(numout,*) 'tra_qsr_init : penetration of the surface solar radiation' |
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| 351 | WRITE(numout,*) '~~~~~~~~~~~~' |
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[1601] | 352 | WRITE(numout,*) ' Namelist namtra_qsr : set the parameter of penetration' |
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| 353 | WRITE(numout,*) ' Light penetration (T) or not (F) ln_traqsr = ', ln_traqsr |
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| 354 | WRITE(numout,*) ' RGB (Red-Green-Blue) light penetration ln_qsr_rgb = ', ln_qsr_rgb |
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| 355 | WRITE(numout,*) ' 2 band light penetration ln_qsr_2bd = ', ln_qsr_2bd |
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| 356 | WRITE(numout,*) ' bio-model light penetration ln_qsr_bio = ', ln_qsr_bio |
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| 357 | WRITE(numout,*) ' RGB : Chl data (=1) or cst value (=0) nn_chldta = ', nn_chldta |
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| 358 | WRITE(numout,*) ' RGB & 2 bands: fraction of light (rn_si1) rn_abs = ', rn_abs |
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| 359 | WRITE(numout,*) ' RGB & 2 bands: shortess depth of extinction rn_si0 = ', rn_si0 |
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| 360 | WRITE(numout,*) ' 2 bands: longest depth of extinction rn_si1 = ', rn_si1 |
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[1423] | 361 | ENDIF |
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[1448] | 362 | |
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| 363 | IF( ln_traqsr ) THEN ! control consistency |
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| 364 | ! |
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[1601] | 365 | IF( .NOT.lk_qsr_bio .AND. ln_qsr_bio ) THEN |
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| 366 | CALL ctl_warn( 'No bio model : force ln_qsr_bio = FALSE ' ) |
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[1448] | 367 | ln_qsr_bio = .FALSE. |
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| 368 | ENDIF |
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| 369 | ! |
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| 370 | ioptio = 0 ! Parameter control |
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| 371 | IF( ln_qsr_rgb ) ioptio = ioptio + 1 |
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| 372 | IF( ln_qsr_2bd ) ioptio = ioptio + 1 |
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| 373 | IF( ln_qsr_bio ) ioptio = ioptio + 1 |
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| 374 | ! |
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[2528] | 375 | IF( ioptio /= 1 ) & |
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| 376 | CALL ctl_stop( ' Choose ONE type of light penetration in namelist namtra_qsr', & |
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| 377 | & ' 2 bands, 3 RGB bands or bio-model light penetration' ) |
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[1448] | 378 | ! |
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[1455] | 379 | IF( ln_qsr_rgb .AND. nn_chldta == 0 ) nqsr = 1 |
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| 380 | IF( ln_qsr_rgb .AND. nn_chldta == 1 ) nqsr = 2 |
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| 381 | IF( ln_qsr_2bd ) nqsr = 3 |
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| 382 | IF( ln_qsr_bio ) nqsr = 4 |
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| 383 | ! |
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[1448] | 384 | IF(lwp) THEN ! Print the choice |
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| 385 | WRITE(numout,*) |
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[2528] | 386 | IF( nqsr == 1 ) WRITE(numout,*) ' R-G-B light penetration - Constant Chlorophyll' |
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| 387 | IF( nqsr == 2 ) WRITE(numout,*) ' R-G-B light penetration - Chl data ' |
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| 388 | IF( nqsr == 3 ) WRITE(numout,*) ' 2 bands light penetration' |
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[1455] | 389 | IF( nqsr == 4 ) WRITE(numout,*) ' bio-model light penetration' |
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[1448] | 390 | ENDIF |
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| 391 | ! |
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| 392 | ENDIF |
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[1423] | 393 | ! ! ===================================== ! |
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| 394 | IF( ln_traqsr ) THEN ! Initialisation of Light Penetration ! |
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| 395 | ! ! ===================================== ! |
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| 396 | ! |
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[2528] | 397 | xsi0r = 1.e0 / rn_si0 |
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| 398 | xsi1r = 1.e0 / rn_si1 |
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[1423] | 399 | ! ! ---------------------------------- ! |
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| 400 | IF( ln_qsr_rgb ) THEN ! Red-Green-Blue light penetration ! |
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| 401 | ! ! ---------------------------------- ! |
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| 402 | ! |
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[2528] | 403 | CALL trc_oce_rgb( rkrgb ) !* tabulated attenuation coef. |
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| 404 | ! |
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| 405 | ! !* level of light extinction |
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| 406 | IF( ln_sco ) THEN ; nksr = jpkm1 |
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| 407 | ELSE ; nksr = trc_oce_ext_lev( r_si2, 0.33e2 ) |
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[457] | 408 | ENDIF |
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[2528] | 409 | |
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| 410 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_0(nksr+1), ' m' |
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[1423] | 411 | ! |
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| 412 | IF( nn_chldta == 1 ) THEN !* Chl data : set sf_chl structure |
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| 413 | IF(lwp) WRITE(numout,*) |
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| 414 | IF(lwp) WRITE(numout,*) ' Chlorophyll read in a file' |
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| 415 | ALLOCATE( sf_chl(1), STAT=ierror ) |
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| 416 | IF( ierror > 0 ) THEN |
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| 417 | CALL ctl_stop( 'tra_qsr_init: unable to allocate sf_chl structure' ) ; RETURN |
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| 418 | ENDIF |
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[2528] | 419 | ALLOCATE( sf_chl(1)%fnow(jpi,jpj,1) ) |
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| 420 | IF( sn_chl%ln_tint )ALLOCATE( sf_chl(1)%fdta(jpi,jpj,1,2) ) |
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[1423] | 421 | ! ! fill sf_chl with sn_chl and control print |
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| 422 | CALL fld_fill( sf_chl, (/ sn_chl /), cn_dir, 'tra_qsr_init', & |
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[1601] | 423 | & 'Solar penetration function of read chlorophyll', 'namtra_qsr' ) |
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[1423] | 424 | ! |
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| 425 | ELSE !* constant Chl : compute once for all the distribution of light (etot3) |
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| 426 | IF(lwp) WRITE(numout,*) |
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| 427 | IF(lwp) WRITE(numout,*) ' Constant Chlorophyll concentration = 0.05' |
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[2528] | 428 | IF( lk_vvl ) THEN ! variable volume |
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| 429 | IF(lwp) WRITE(numout,*) ' key_vvl: light distribution will be computed at each time step' |
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| 430 | ELSE ! constant volume: computes one for all |
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| 431 | IF(lwp) WRITE(numout,*) ' fixed volume: light distribution computed one for all' |
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| 432 | ! |
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| 433 | zchl = 0.05 ! constant chlorophyll |
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| 434 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
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| 435 | zekb(:,:) = rkrgb(1,irgb) ! Separation in R-G-B depending of the chlorophyll |
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| 436 | zekg(:,:) = rkrgb(2,irgb) |
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| 437 | zekr(:,:) = rkrgb(3,irgb) |
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| 438 | ! |
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| 439 | zcoef = ( 1. - rn_abs ) / 3.e0 ! equi-partition in R-G-B |
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| 440 | ze0(:,:,1) = rn_abs |
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| 441 | ze1(:,:,1) = zcoef |
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| 442 | ze2(:,:,1) = zcoef |
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| 443 | ze3(:,:,1) = zcoef |
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| 444 | zea(:,:,1) = tmask(:,:,1) ! = ( ze0+ze1+z2+ze3 ) * tmask |
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[1423] | 445 | |
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[2528] | 446 | DO jk = 2, nksr+1 |
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[1423] | 447 | !CDIR NOVERRCHK |
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[2528] | 448 | DO jj = 1, jpj |
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[1423] | 449 | !CDIR NOVERRCHK |
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[2528] | 450 | DO ji = 1, jpi |
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| 451 | zc0 = ze0(ji,jj,jk-1) * EXP( - fse3t_0(ji,jj,jk-1) * xsi0r ) |
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| 452 | zc1 = ze1(ji,jj,jk-1) * EXP( - fse3t_0(ji,jj,jk-1) * zekb(ji,jj) ) |
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| 453 | zc2 = ze2(ji,jj,jk-1) * EXP( - fse3t_0(ji,jj,jk-1) * zekg(ji,jj) ) |
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| 454 | zc3 = ze3(ji,jj,jk-1) * EXP( - fse3t_0(ji,jj,jk-1) * zekr(ji,jj) ) |
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| 455 | ze0(ji,jj,jk) = zc0 |
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| 456 | ze1(ji,jj,jk) = zc1 |
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| 457 | ze2(ji,jj,jk) = zc2 |
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| 458 | ze3(ji,jj,jk) = zc3 |
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| 459 | zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
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| 460 | END DO |
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[1423] | 461 | END DO |
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[2528] | 462 | END DO |
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| 463 | ! |
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| 464 | DO jk = 1, nksr |
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[3625] | 465 | etot3(:,:,jk) = r1_rau0_rcp * ( zea(:,:,jk) - zea(:,:,jk+1) ) |
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[1423] | 466 | END DO |
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[2528] | 467 | etot3(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
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| 468 | ENDIF |
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[1423] | 469 | ENDIF |
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| 470 | ! |
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[1448] | 471 | ENDIF |
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[1423] | 472 | ! ! ---------------------------------- ! |
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[1448] | 473 | IF( ln_qsr_2bd ) THEN ! 2 bands light penetration ! |
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[1423] | 474 | ! ! ---------------------------------- ! |
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| 475 | ! |
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| 476 | ! ! level of light extinction |
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| 477 | nksr = trc_oce_ext_lev( rn_si1, 1.e2 ) |
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| 478 | IF(lwp) THEN |
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| 479 | WRITE(numout,*) |
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[2528] | 480 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_0(nksr+1), ' m' |
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[1423] | 481 | ENDIF |
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| 482 | ! |
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[2528] | 483 | IF( lk_vvl ) THEN ! variable volume |
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| 484 | IF(lwp) WRITE(numout,*) ' key_vvl: light distribution will be computed at each time step' |
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| 485 | ELSE ! constant volume: computes one for all |
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[3625] | 486 | zz0 = rn_abs * r1_rau0_rcp |
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| 487 | zz1 = ( 1. - rn_abs ) * r1_rau0_rcp |
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[2528] | 488 | DO jk = 1, nksr !* solar heat absorbed at T-point computed once for all |
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| 489 | DO jj = 1, jpj ! top 400 meters |
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| 490 | DO ji = 1, jpi |
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| 491 | zc0 = zz0 * EXP( -fsdepw(ji,jj,jk )*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk )*xsi1r ) |
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| 492 | zc1 = zz0 * EXP( -fsdepw(ji,jj,jk+1)*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk+1)*xsi1r ) |
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| 493 | etot3(ji,jj,jk) = ( zc0 * tmask(ji,jj,jk) - zc1 * tmask(ji,jj,jk+1) ) |
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| 494 | END DO |
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[1423] | 495 | END DO |
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| 496 | END DO |
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[2528] | 497 | etot3(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
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| 498 | ! |
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| 499 | ENDIF |
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[187] | 500 | ENDIF |
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[1423] | 501 | ! ! ===================================== ! |
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| 502 | ELSE ! No light penetration ! |
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| 503 | ! ! ===================================== ! |
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[457] | 504 | IF(lwp) THEN |
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| 505 | WRITE(numout,*) |
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| 506 | WRITE(numout,*) 'tra_qsr_init : NO solar flux penetration' |
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| 507 | WRITE(numout,*) '~~~~~~~~~~~~' |
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| 508 | ENDIF |
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[3] | 509 | ENDIF |
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[503] | 510 | ! |
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[3294] | 511 | CALL wrk_dealloc( jpi, jpj, zekb, zekg, zekr ) |
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| 512 | CALL wrk_dealloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) |
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[2715] | 513 | ! |
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[3294] | 514 | IF( nn_timing == 1 ) CALL timing_stop('tra_qsr_init') |
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| 515 | ! |
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[3] | 516 | END SUBROUTINE tra_qsr_init |
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| 517 | |
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| 518 | !!====================================================================== |
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| 519 | END MODULE traqsr |
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