[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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[4161] | 12 | !! 4.0 ! 2012-05 (C. Rousset) store attenuation coef for use in ice model |
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[3] | 13 | !!---------------------------------------------------------------------- |
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[503] | 14 | |
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| 15 | !!---------------------------------------------------------------------- |
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[3] | 16 | !! tra_qsr : trend due to the solar radiation penetration |
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| 17 | !! tra_qsr_init : solar radiation penetration initialization |
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| 18 | !!---------------------------------------------------------------------- |
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| 19 | USE oce ! ocean dynamics and active tracers |
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| 20 | USE dom_oce ! ocean space and time domain |
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[888] | 21 | USE sbc_oce ! surface boundary condition: ocean |
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| 22 | USE trc_oce ! share SMS/Ocean variables |
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[4990] | 23 | USE trd_oce ! trends: ocean variables |
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| 24 | USE trdtra ! trends manager: tracers |
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[3] | 25 | USE in_out_manager ! I/O manager |
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| 26 | USE phycst ! physical constants |
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[258] | 27 | USE prtctl ! Print control |
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[1423] | 28 | USE iom ! I/O manager |
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| 29 | USE fldread ! read input fields |
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[4161] | 30 | USE restart ! ocean restart |
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[2715] | 31 | USE lib_mpp ! MPP library |
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[3294] | 32 | USE wrk_nemo ! Memory Allocation |
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| 33 | USE timing ! Timing |
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[3] | 34 | |
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| 35 | IMPLICIT NONE |
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| 36 | PRIVATE |
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| 37 | |
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[2528] | 38 | PUBLIC tra_qsr ! routine called by step.F90 (ln_traqsr=T) |
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| 39 | PUBLIC tra_qsr_init ! routine called by opa.F90 |
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[3] | 40 | |
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[4147] | 41 | ! !!* Namelist namtra_qsr: penetrative solar radiation |
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| 42 | LOGICAL , PUBLIC :: ln_traqsr !: light absorption (qsr) flag |
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| 43 | LOGICAL , PUBLIC :: ln_qsr_rgb !: Red-Green-Blue light absorption flag |
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| 44 | LOGICAL , PUBLIC :: ln_qsr_2bd !: 2 band light absorption flag |
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| 45 | LOGICAL , PUBLIC :: ln_qsr_bio !: bio-model light absorption flag |
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[4205] | 46 | LOGICAL , PUBLIC :: ln_qsr_ice !: light penetration for ice-model LIM3 (clem) |
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[4147] | 47 | INTEGER , PUBLIC :: nn_chldta !: use Chlorophyll data (=1) or not (=0) |
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| 48 | REAL(wp), PUBLIC :: rn_abs !: fraction absorbed in the very near surface (RGB & 2 bands) |
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| 49 | REAL(wp), PUBLIC :: rn_si0 !: very near surface depth of extinction (RGB & 2 bands) |
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| 50 | REAL(wp), PUBLIC :: rn_si1 !: deepest depth of extinction (water type I) (2 bands) |
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[5352] | 51 | |
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| 52 | !! Energy budget of the leads (open water embedded in sea ice) |
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| 53 | REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: fraqsr_1lev !: fraction of solar net radiation absorbed in the 1st T level [-] |
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| 54 | |
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[1445] | 55 | ! Module variables |
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[2528] | 56 | REAL(wp) :: xsi0r !: inverse of rn_si0 |
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| 57 | REAL(wp) :: xsi1r !: inverse of rn_si1 |
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[1423] | 58 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_chl ! structure of input Chl (file informations, fields read) |
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[2528] | 59 | INTEGER, PUBLIC :: nksr ! levels below which the light cannot penetrate ( depth larger than 391 m) |
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[1445] | 60 | REAL(wp), DIMENSION(3,61) :: rkrgb !: tabulated attenuation coefficients for RGB absorption |
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[3] | 61 | |
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| 62 | !! * Substitutions |
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| 63 | # include "domzgr_substitute.h90" |
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| 64 | # include "vectopt_loop_substitute.h90" |
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| 65 | !!---------------------------------------------------------------------- |
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[2528] | 66 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[888] | 67 | !! $Id$ |
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[2715] | 68 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[3] | 69 | !!---------------------------------------------------------------------- |
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| 70 | CONTAINS |
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| 71 | |
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| 72 | SUBROUTINE tra_qsr( kt ) |
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| 73 | !!---------------------------------------------------------------------- |
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| 74 | !! *** ROUTINE tra_qsr *** |
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| 75 | !! |
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| 76 | !! ** Purpose : Compute the temperature trend due to the solar radiation |
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| 77 | !! penetration and add it to the general temperature trend. |
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| 78 | !! |
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[1423] | 79 | !! ** Method : The profile of the solar radiation within the ocean is defined |
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| 80 | !! through 2 wavebands (rn_si0,rn_si1) or 3 wavebands (RGB) and a ratio rn_abs |
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| 81 | !! Considering the 2 wavebands case: |
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| 82 | !! I(k) = Qsr*( rn_abs*EXP(z(k)/rn_si0) + (1.-rn_abs)*EXP(z(k)/rn_si1) ) |
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| 83 | !! The temperature trend associated with the solar radiation penetration |
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| 84 | !! is given by : zta = 1/e3t dk[ I ] / (rau0*Cp) |
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[3] | 85 | !! At the bottom, boudary condition for the radiation is no flux : |
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| 86 | !! all heat which has not been absorbed in the above levels is put |
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| 87 | !! in the last ocean level. |
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| 88 | !! In z-coordinate case, the computation is only done down to the |
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| 89 | !! level where I(k) < 1.e-15 W/m2. In addition, the coefficients |
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| 90 | !! used for the computation are calculated one for once as they |
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| 91 | !! depends on k only. |
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| 92 | !! |
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| 93 | !! ** Action : - update ta with the penetrative solar radiation trend |
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| 94 | !! - save the trend in ttrd ('key_trdtra') |
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[1423] | 95 | !! |
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| 96 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
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| 97 | !! Lengaigne et al. 2007, Clim. Dyn., V28, 5, 503-516. |
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[503] | 98 | !!---------------------------------------------------------------------- |
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[2715] | 99 | ! |
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[503] | 100 | INTEGER, INTENT(in) :: kt ! ocean time-step |
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[2715] | 101 | ! |
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[1423] | 102 | INTEGER :: ji, jj, jk ! dummy loop indices |
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[2715] | 103 | INTEGER :: irgb ! local integers |
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| 104 | REAL(wp) :: zchl, zcoef, zfact ! local scalars |
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[1423] | 105 | REAL(wp) :: zc0, zc1, zc2, zc3 ! - - |
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[4161] | 106 | REAL(wp) :: zzc0, zzc1, zzc2, zzc3 ! - - |
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[2715] | 107 | REAL(wp) :: zz0, zz1, z1_e3t ! - - |
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[3294] | 108 | REAL(wp), POINTER, DIMENSION(:,: ) :: zekb, zekg, zekr |
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| 109 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ze0, ze1, ze2, ze3, zea, ztrdt |
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[3] | 110 | !!---------------------------------------------------------------------- |
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[3294] | 111 | ! |
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| 112 | IF( nn_timing == 1 ) CALL timing_start('tra_qsr') |
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| 113 | ! |
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| 114 | CALL wrk_alloc( jpi, jpj, zekb, zekg, zekr ) |
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| 115 | CALL wrk_alloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) |
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| 116 | ! |
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[3] | 117 | IF( kt == nit000 ) THEN |
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[503] | 118 | IF(lwp) WRITE(numout,*) |
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| 119 | IF(lwp) WRITE(numout,*) 'tra_qsr : penetration of the surface solar radiation' |
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| 120 | IF(lwp) WRITE(numout,*) '~~~~~~~' |
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[1423] | 121 | IF( .NOT.ln_traqsr ) RETURN |
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[3] | 122 | ENDIF |
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| 123 | |
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[503] | 124 | IF( l_trdtra ) THEN ! Save ta and sa trends |
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[3294] | 125 | CALL wrk_alloc( jpi, jpj, jpk, ztrdt ) |
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| 126 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) |
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[216] | 127 | ENDIF |
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| 128 | |
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[2528] | 129 | ! Set before qsr tracer content field |
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| 130 | ! *********************************** |
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| 131 | IF( kt == nit000 ) THEN ! Set the forcing field at nit000 - 1 |
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| 132 | ! ! ----------------------------------- |
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[4834] | 133 | qsr_hc(:,:,:) = 0.e0 |
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| 134 | ! |
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[2528] | 135 | IF( ln_rstart .AND. & ! Restart: read in restart file |
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| 136 | & iom_varid( numror, 'qsr_hc_b', ldstop = .FALSE. ) > 0 ) THEN |
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| 137 | IF(lwp) WRITE(numout,*) ' nit000-1 qsr tracer content forcing field red in the restart file' |
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| 138 | zfact = 0.5e0 |
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| 139 | CALL iom_get( numror, jpdom_autoglo, 'qsr_hc_b', qsr_hc_b ) ! before heat content trend due to Qsr flux |
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| 140 | ELSE ! No restart or restart not found: Euler forward time stepping |
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| 141 | zfact = 1.e0 |
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| 142 | qsr_hc_b(:,:,:) = 0.e0 |
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| 143 | ENDIF |
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| 144 | ELSE ! Swap of forcing field |
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| 145 | ! ! --------------------- |
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| 146 | zfact = 0.5e0 |
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| 147 | qsr_hc_b(:,:,:) = qsr_hc(:,:,:) |
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| 148 | ENDIF |
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| 149 | ! Compute now qsr tracer content field |
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| 150 | ! ************************************ |
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[1423] | 151 | |
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| 152 | ! ! ============================================== ! |
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[1445] | 153 | IF( lk_qsr_bio .AND. ln_qsr_bio ) THEN ! bio-model fluxes : all vertical coordinates ! |
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[1423] | 154 | ! ! ============================================== ! |
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| 155 | DO jk = 1, jpkm1 |
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[3625] | 156 | qsr_hc(:,:,jk) = r1_rau0_rcp * ( etot3(:,:,jk) - etot3(:,:,jk+1) ) |
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[2528] | 157 | END DO |
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| 158 | ! Add to the general trend |
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| 159 | DO jk = 1, jpkm1 |
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| 160 | DO jj = 2, jpjm1 |
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[3] | 161 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[2528] | 162 | z1_e3t = zfact / fse3t(ji,jj,jk) |
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| 163 | 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] | 164 | END DO |
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| 165 | END DO |
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[1423] | 166 | END DO |
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[1756] | 167 | CALL iom_put( 'qsr3d', etot3 ) ! Shortwave Radiation 3D distribution |
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[4161] | 168 | ! clem: store attenuation coefficient of the first ocean level |
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[5352] | 169 | IF ( ln_qsr_ice ) THEN |
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[4161] | 170 | DO jj = 1, jpj |
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| 171 | DO ji = 1, jpi |
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| 172 | IF ( qsr(ji,jj) /= 0._wp ) THEN |
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[4990] | 173 | fraqsr_1lev(ji,jj) = ( qsr_hc(ji,jj,1) / ( r1_rau0_rcp * qsr(ji,jj) ) ) |
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[5352] | 174 | ELSE |
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| 175 | fraqsr_1lev(ji,jj) = 1. |
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[4161] | 176 | ENDIF |
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| 177 | END DO |
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| 178 | END DO |
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| 179 | ENDIF |
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[1423] | 180 | ! ! ============================================== ! |
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| 181 | ELSE ! Ocean alone : |
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| 182 | ! ! ============================================== ! |
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| 183 | ! |
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| 184 | ! ! ------------------------- ! |
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| 185 | IF( ln_qsr_rgb) THEN ! R-G-B light penetration ! |
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| 186 | ! ! ------------------------- ! |
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| 187 | ! Set chlorophyl concentration |
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[2528] | 188 | IF( nn_chldta == 1 .OR. lk_vvl ) THEN !* Variable Chlorophyll or ocean volume |
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[1423] | 189 | ! |
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[2528] | 190 | IF( nn_chldta == 1 ) THEN !* Variable Chlorophyll |
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| 191 | ! |
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| 192 | CALL fld_read( kt, 1, sf_chl ) ! Read Chl data and provides it at the current time step |
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| 193 | ! |
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[1423] | 194 | !CDIR COLLAPSE |
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| 195 | !CDIR NOVERRCHK |
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[2528] | 196 | DO jj = 1, jpj ! Separation in R-G-B depending of the surface Chl |
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[1423] | 197 | !CDIR NOVERRCHK |
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[2528] | 198 | DO ji = 1, jpi |
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| 199 | zchl = MIN( 10. , MAX( 0.03, sf_chl(1)%fnow(ji,jj,1) ) ) |
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| 200 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
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| 201 | zekb(ji,jj) = rkrgb(1,irgb) |
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| 202 | zekg(ji,jj) = rkrgb(2,irgb) |
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| 203 | zekr(ji,jj) = rkrgb(3,irgb) |
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| 204 | END DO |
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[187] | 205 | END DO |
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[2528] | 206 | ELSE ! Variable ocean volume but constant chrlorophyll |
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| 207 | zchl = 0.05 ! constant chlorophyll |
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| 208 | irgb = NINT( 41 + 20.*LOG10( zchl ) + 1.e-15 ) |
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| 209 | zekb(:,:) = rkrgb(1,irgb) ! Separation in R-G-B depending of the chlorophyll |
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| 210 | zekg(:,:) = rkrgb(2,irgb) |
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| 211 | zekr(:,:) = rkrgb(3,irgb) |
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| 212 | ENDIF |
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[1423] | 213 | ! |
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| 214 | zcoef = ( 1. - rn_abs ) / 3.e0 ! equi-partition in R-G-B |
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| 215 | ze0(:,:,1) = rn_abs * qsr(:,:) |
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| 216 | ze1(:,:,1) = zcoef * qsr(:,:) |
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| 217 | ze2(:,:,1) = zcoef * qsr(:,:) |
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| 218 | ze3(:,:,1) = zcoef * qsr(:,:) |
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| 219 | zea(:,:,1) = qsr(:,:) |
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| 220 | ! |
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| 221 | DO jk = 2, nksr+1 |
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| 222 | !CDIR NOVERRCHK |
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| 223 | DO jj = 1, jpj |
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| 224 | !CDIR NOVERRCHK |
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| 225 | DO ji = 1, jpi |
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[2528] | 226 | zc0 = ze0(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * xsi0r ) |
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[1423] | 227 | zc1 = ze1(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekb(ji,jj) ) |
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| 228 | zc2 = ze2(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekg(ji,jj) ) |
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| 229 | zc3 = ze3(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekr(ji,jj) ) |
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| 230 | ze0(ji,jj,jk) = zc0 |
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| 231 | ze1(ji,jj,jk) = zc1 |
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| 232 | ze2(ji,jj,jk) = zc2 |
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| 233 | ze3(ji,jj,jk) = zc3 |
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| 234 | zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
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| 235 | END DO |
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| 236 | END DO |
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| 237 | END DO |
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[4161] | 238 | ! clem: store attenuation coefficient of the first ocean level |
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[5299] | 239 | IF ( ln_qsr_ice ) THEN |
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[4161] | 240 | DO jj = 1, jpj |
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| 241 | DO ji = 1, jpi |
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| 242 | zzc0 = rn_abs * EXP( - fse3t(ji,jj,1) * xsi0r ) |
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| 243 | zzc1 = zcoef * EXP( - fse3t(ji,jj,1) * zekb(ji,jj) ) |
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| 244 | zzc2 = zcoef * EXP( - fse3t(ji,jj,1) * zekg(ji,jj) ) |
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| 245 | zzc3 = zcoef * EXP( - fse3t(ji,jj,1) * zekr(ji,jj) ) |
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[4990] | 246 | fraqsr_1lev(ji,jj) = 1.0 - ( zzc0 + zzc1 + zzc2 + zzc3 ) * tmask(ji,jj,2) |
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[4161] | 247 | END DO |
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| 248 | END DO |
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| 249 | ENDIF |
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[1423] | 250 | ! |
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| 251 | DO jk = 1, nksr ! compute and add qsr trend to ta |
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[3625] | 252 | qsr_hc(:,:,jk) = r1_rau0_rcp * ( zea(:,:,jk) - zea(:,:,jk+1) ) |
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[1423] | 253 | END DO |
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[1756] | 254 | zea(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
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| 255 | CALL iom_put( 'qsr3d', zea ) ! Shortwave Radiation 3D distribution |
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[1423] | 256 | ! |
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| 257 | ELSE !* Constant Chlorophyll |
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| 258 | DO jk = 1, nksr |
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[2528] | 259 | qsr_hc(:,:,jk) = etot3(:,:,jk) * qsr(:,:) |
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[1423] | 260 | END DO |
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[4161] | 261 | ! clem: store attenuation coefficient of the first ocean level |
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[5299] | 262 | IF ( ln_qsr_ice ) THEN |
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[4990] | 263 | fraqsr_1lev(:,:) = etot3(:,:,1) / r1_rau0_rcp |
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[4161] | 264 | ENDIF |
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| 265 | ENDIF |
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[1423] | 266 | |
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[1448] | 267 | ENDIF |
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| 268 | ! ! ------------------------- ! |
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| 269 | IF( ln_qsr_2bd ) THEN ! 2 band light penetration ! |
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[1423] | 270 | ! ! ------------------------- ! |
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| 271 | ! |
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[2528] | 272 | IF( lk_vvl ) THEN !* variable volume |
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[3625] | 273 | zz0 = rn_abs * r1_rau0_rcp |
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| 274 | zz1 = ( 1. - rn_abs ) * r1_rau0_rcp |
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[2528] | 275 | DO jk = 1, nksr ! solar heat absorbed at T-point in the top 400m |
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[3294] | 276 | DO jj = 1, jpj |
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| 277 | DO ji = 1, jpi |
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[2528] | 278 | zc0 = zz0 * EXP( -fsdepw(ji,jj,jk )*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk )*xsi1r ) |
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| 279 | zc1 = zz0 * EXP( -fsdepw(ji,jj,jk+1)*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk+1)*xsi1r ) |
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| 280 | qsr_hc(ji,jj,jk) = qsr(ji,jj) * ( zc0*tmask(ji,jj,jk) - zc1*tmask(ji,jj,jk+1) ) |
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| 281 | END DO |
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[187] | 282 | END DO |
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| 283 | END DO |
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[4161] | 284 | ! clem: store attenuation coefficient of the first ocean level |
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[5299] | 285 | IF ( ln_qsr_ice ) THEN |
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[4161] | 286 | DO jj = 1, jpj |
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| 287 | DO ji = 1, jpi |
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| 288 | zc0 = zz0 * EXP( -fsdepw(ji,jj,1)*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,1)*xsi1r ) |
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| 289 | zc1 = zz0 * EXP( -fsdepw(ji,jj,2)*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,2)*xsi1r ) |
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[4990] | 290 | fraqsr_1lev(ji,jj) = ( zc0*tmask(ji,jj,1) - zc1*tmask(ji,jj,2) ) / r1_rau0_rcp |
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[4161] | 291 | END DO |
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| 292 | END DO |
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| 293 | ENDIF |
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[2528] | 294 | ELSE !* constant volume: coef. computed one for all |
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| 295 | DO jk = 1, nksr |
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| 296 | DO jj = 2, jpjm1 |
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| 297 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[4990] | 298 | ! (ISF) no light penetration below the ice shelves |
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| 299 | qsr_hc(ji,jj,jk) = etot3(ji,jj,jk) * qsr(ji,jj) * tmask(ji,jj,1) |
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[2528] | 300 | END DO |
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| 301 | END DO |
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| 302 | END DO |
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[4161] | 303 | ! clem: store attenuation coefficient of the first ocean level |
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[5299] | 304 | IF ( ln_qsr_ice ) THEN |
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[4990] | 305 | fraqsr_1lev(:,:) = etot3(:,:,1) / r1_rau0_rcp |
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[4161] | 306 | ENDIF |
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[2528] | 307 | ! |
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| 308 | ENDIF |
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[1423] | 309 | ! |
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[187] | 310 | ENDIF |
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| 311 | ! |
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[2528] | 312 | ! Add to the general trend |
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| 313 | DO jk = 1, nksr |
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| 314 | DO jj = 2, jpjm1 |
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| 315 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 316 | z1_e3t = zfact / fse3t(ji,jj,jk) |
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| 317 | 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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| 318 | END DO |
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| 319 | END DO |
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| 320 | END DO |
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| 321 | ! |
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[3] | 322 | ENDIF |
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[2528] | 323 | ! |
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| 324 | IF( lrst_oce ) THEN ! Write in the ocean restart file |
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| 325 | ! ******************************* |
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| 326 | IF(lwp) WRITE(numout,*) |
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| 327 | IF(lwp) WRITE(numout,*) 'qsr tracer content forcing field written in ocean restart file ', & |
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| 328 | & 'at it= ', kt,' date= ', ndastp |
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| 329 | IF(lwp) WRITE(numout,*) '~~~~' |
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| 330 | CALL iom_rstput( kt, nitrst, numrow, 'qsr_hc_b', qsr_hc ) |
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| 331 | ! |
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| 332 | ENDIF |
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[3] | 333 | |
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[503] | 334 | IF( l_trdtra ) THEN ! qsr tracers trends saved for diagnostics |
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[2528] | 335 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) - ztrdt(:,:,:) |
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[4990] | 336 | CALL trd_tra( kt, 'TRA', jp_tem, jptra_qsr, ztrdt ) |
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[3294] | 337 | CALL wrk_dealloc( jpi, jpj, jpk, ztrdt ) |
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[3] | 338 | ENDIF |
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[457] | 339 | ! ! print mean trends (used for debugging) |
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[2528] | 340 | IF(ln_ctl) CALL prt_ctl( tab3d_1=tsa(:,:,:,jp_tem), clinfo1=' qsr - Ta: ', mask1=tmask, clinfo3='tra-ta' ) |
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[503] | 341 | ! |
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[3294] | 342 | CALL wrk_dealloc( jpi, jpj, zekb, zekg, zekr ) |
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| 343 | CALL wrk_dealloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) |
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[2715] | 344 | ! |
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[3294] | 345 | IF( nn_timing == 1 ) CALL timing_stop('tra_qsr') |
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| 346 | ! |
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[3] | 347 | END SUBROUTINE tra_qsr |
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| 348 | |
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| 349 | |
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| 350 | SUBROUTINE tra_qsr_init |
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| 351 | !!---------------------------------------------------------------------- |
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| 352 | !! *** ROUTINE tra_qsr_init *** |
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| 353 | !! |
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| 354 | !! ** Purpose : Initialization for the penetrative solar radiation |
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| 355 | !! |
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| 356 | !! ** Method : The profile of solar radiation within the ocean is set |
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[1423] | 357 | !! from two length scale of penetration (rn_si0,rn_si1) and a ratio |
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[1601] | 358 | !! (rn_abs). These parameters are read in the namtra_qsr namelist. The |
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[3] | 359 | !! default values correspond to clear water (type I in Jerlov' |
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| 360 | !! (1968) classification. |
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| 361 | !! called by tra_qsr at the first timestep (nit000) |
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| 362 | !! |
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[1423] | 363 | !! ** Action : - initialize rn_si0, rn_si1 and rn_abs |
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[3] | 364 | !! |
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[503] | 365 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
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[3] | 366 | !!---------------------------------------------------------------------- |
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[2715] | 367 | ! |
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[4147] | 368 | INTEGER :: ji, jj, jk ! dummy loop indices |
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[2715] | 369 | INTEGER :: irgb, ierror, ioptio, nqsr ! local integer |
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[4147] | 370 | INTEGER :: ios ! Local integer output status for namelist read |
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[2715] | 371 | REAL(wp) :: zz0, zc0 , zc1, zcoef ! local scalars |
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| 372 | REAL(wp) :: zz1, zc2 , zc3, zchl ! - - |
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[3294] | 373 | REAL(wp), POINTER, DIMENSION(:,: ) :: zekb, zekg, zekr |
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| 374 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ze0, ze1, ze2, ze3, zea |
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[2715] | 375 | ! |
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[1423] | 376 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files |
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| 377 | TYPE(FLD_N) :: sn_chl ! informations about the chlorofyl field to be read |
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[2715] | 378 | !! |
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[4161] | 379 | NAMELIST/namtra_qsr/ sn_chl, cn_dir, ln_traqsr, ln_qsr_rgb, ln_qsr_2bd, ln_qsr_bio, ln_qsr_ice, & |
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[2528] | 380 | & nn_chldta, rn_abs, rn_si0, rn_si1 |
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[3] | 381 | !!---------------------------------------------------------------------- |
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| 382 | |
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[3294] | 383 | ! |
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| 384 | IF( nn_timing == 1 ) CALL timing_start('tra_qsr_init') |
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| 385 | ! |
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| 386 | CALL wrk_alloc( jpi, jpj, zekb, zekg, zekr ) |
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| 387 | CALL wrk_alloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) |
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| 388 | ! |
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[2715] | 389 | |
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[4147] | 390 | REWIND( numnam_ref ) ! Namelist namtra_qsr in reference namelist : Ratio and length of penetration |
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| 391 | READ ( numnam_ref, namtra_qsr, IOSTAT = ios, ERR = 901) |
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| 392 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_qsr in reference namelist', lwp ) |
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| 393 | |
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| 394 | REWIND( numnam_cfg ) ! Namelist namtra_qsr in configuration namelist : Ratio and length of penetration |
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| 395 | READ ( numnam_cfg, namtra_qsr, IOSTAT = ios, ERR = 902 ) |
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| 396 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_qsr in configuration namelist', lwp ) |
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[4624] | 397 | IF(lwm) WRITE ( numond, namtra_qsr ) |
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[1423] | 398 | ! |
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| 399 | IF(lwp) THEN ! control print |
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| 400 | WRITE(numout,*) |
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| 401 | WRITE(numout,*) 'tra_qsr_init : penetration of the surface solar radiation' |
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| 402 | WRITE(numout,*) '~~~~~~~~~~~~' |
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[1601] | 403 | WRITE(numout,*) ' Namelist namtra_qsr : set the parameter of penetration' |
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| 404 | WRITE(numout,*) ' Light penetration (T) or not (F) ln_traqsr = ', ln_traqsr |
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| 405 | WRITE(numout,*) ' RGB (Red-Green-Blue) light penetration ln_qsr_rgb = ', ln_qsr_rgb |
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| 406 | WRITE(numout,*) ' 2 band light penetration ln_qsr_2bd = ', ln_qsr_2bd |
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| 407 | WRITE(numout,*) ' bio-model light penetration ln_qsr_bio = ', ln_qsr_bio |
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[4161] | 408 | WRITE(numout,*) ' light penetration for ice-model LIM3 ln_qsr_ice = ', ln_qsr_ice |
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[1601] | 409 | WRITE(numout,*) ' RGB : Chl data (=1) or cst value (=0) nn_chldta = ', nn_chldta |
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| 410 | WRITE(numout,*) ' RGB & 2 bands: fraction of light (rn_si1) rn_abs = ', rn_abs |
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| 411 | WRITE(numout,*) ' RGB & 2 bands: shortess depth of extinction rn_si0 = ', rn_si0 |
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| 412 | WRITE(numout,*) ' 2 bands: longest depth of extinction rn_si1 = ', rn_si1 |
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[1423] | 413 | ENDIF |
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[1448] | 414 | |
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[5352] | 415 | ! allocate fraqsr_1lev if we have ln_qsr_ice |
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| 416 | IF( ln_qsr_ice ) THEN |
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| 417 | ALLOCATE( fraqsr_1lev(jpi,jpj) , STAT=ierror ) |
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| 418 | IF( ierror > 0 ) THEN |
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| 419 | CALL ctl_stop( 'tra_qsr_init: unable to allocate fraqsr_1lev array' ) ; RETURN |
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| 420 | ENDIF |
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| 421 | fraqsr_1lev(:,:) = 1._wp ! default definition used in the 1st time step as sbc_ssm is called before tra_qsr |
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| 422 | ENDIF |
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| 423 | |
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[1448] | 424 | IF( ln_traqsr ) THEN ! control consistency |
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| 425 | ! |
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[1601] | 426 | IF( .NOT.lk_qsr_bio .AND. ln_qsr_bio ) THEN |
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| 427 | CALL ctl_warn( 'No bio model : force ln_qsr_bio = FALSE ' ) |
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[1448] | 428 | ln_qsr_bio = .FALSE. |
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| 429 | ENDIF |
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| 430 | ! |
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| 431 | ioptio = 0 ! Parameter control |
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| 432 | IF( ln_qsr_rgb ) ioptio = ioptio + 1 |
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| 433 | IF( ln_qsr_2bd ) ioptio = ioptio + 1 |
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| 434 | IF( ln_qsr_bio ) ioptio = ioptio + 1 |
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| 435 | ! |
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[2528] | 436 | IF( ioptio /= 1 ) & |
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| 437 | CALL ctl_stop( ' Choose ONE type of light penetration in namelist namtra_qsr', & |
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| 438 | & ' 2 bands, 3 RGB bands or bio-model light penetration' ) |
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[1448] | 439 | ! |
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[1455] | 440 | IF( ln_qsr_rgb .AND. nn_chldta == 0 ) nqsr = 1 |
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| 441 | IF( ln_qsr_rgb .AND. nn_chldta == 1 ) nqsr = 2 |
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| 442 | IF( ln_qsr_2bd ) nqsr = 3 |
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| 443 | IF( ln_qsr_bio ) nqsr = 4 |
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| 444 | ! |
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[1448] | 445 | IF(lwp) THEN ! Print the choice |
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| 446 | WRITE(numout,*) |
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[2528] | 447 | IF( nqsr == 1 ) WRITE(numout,*) ' R-G-B light penetration - Constant Chlorophyll' |
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| 448 | IF( nqsr == 2 ) WRITE(numout,*) ' R-G-B light penetration - Chl data ' |
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| 449 | IF( nqsr == 3 ) WRITE(numout,*) ' 2 bands light penetration' |
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[1455] | 450 | IF( nqsr == 4 ) WRITE(numout,*) ' bio-model light penetration' |
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[1448] | 451 | ENDIF |
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| 452 | ! |
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| 453 | ENDIF |
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[1423] | 454 | ! ! ===================================== ! |
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| 455 | IF( ln_traqsr ) THEN ! Initialisation of Light Penetration ! |
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| 456 | ! ! ===================================== ! |
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| 457 | ! |
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[2528] | 458 | xsi0r = 1.e0 / rn_si0 |
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| 459 | xsi1r = 1.e0 / rn_si1 |
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[1423] | 460 | ! ! ---------------------------------- ! |
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| 461 | IF( ln_qsr_rgb ) THEN ! Red-Green-Blue light penetration ! |
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| 462 | ! ! ---------------------------------- ! |
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| 463 | ! |
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[2528] | 464 | CALL trc_oce_rgb( rkrgb ) !* tabulated attenuation coef. |
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| 465 | ! |
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| 466 | ! !* level of light extinction |
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| 467 | IF( ln_sco ) THEN ; nksr = jpkm1 |
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| 468 | ELSE ; nksr = trc_oce_ext_lev( r_si2, 0.33e2 ) |
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[457] | 469 | ENDIF |
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[2528] | 470 | |
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[4292] | 471 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_1d(nksr+1), ' m' |
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[1423] | 472 | ! |
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| 473 | IF( nn_chldta == 1 ) THEN !* Chl data : set sf_chl structure |
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| 474 | IF(lwp) WRITE(numout,*) |
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| 475 | IF(lwp) WRITE(numout,*) ' Chlorophyll read in a file' |
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| 476 | ALLOCATE( sf_chl(1), STAT=ierror ) |
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| 477 | IF( ierror > 0 ) THEN |
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| 478 | CALL ctl_stop( 'tra_qsr_init: unable to allocate sf_chl structure' ) ; RETURN |
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| 479 | ENDIF |
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[2528] | 480 | ALLOCATE( sf_chl(1)%fnow(jpi,jpj,1) ) |
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| 481 | IF( sn_chl%ln_tint )ALLOCATE( sf_chl(1)%fdta(jpi,jpj,1,2) ) |
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[1423] | 482 | ! ! fill sf_chl with sn_chl and control print |
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| 483 | CALL fld_fill( sf_chl, (/ sn_chl /), cn_dir, 'tra_qsr_init', & |
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[1601] | 484 | & 'Solar penetration function of read chlorophyll', 'namtra_qsr' ) |
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[1423] | 485 | ! |
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| 486 | ELSE !* constant Chl : compute once for all the distribution of light (etot3) |
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| 487 | IF(lwp) WRITE(numout,*) |
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| 488 | IF(lwp) WRITE(numout,*) ' Constant Chlorophyll concentration = 0.05' |
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[2528] | 489 | IF( lk_vvl ) THEN ! variable volume |
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| 490 | IF(lwp) WRITE(numout,*) ' key_vvl: light distribution will be computed at each time step' |
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| 491 | ELSE ! constant volume: computes one for all |
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| 492 | IF(lwp) WRITE(numout,*) ' fixed volume: light distribution computed one for all' |
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| 493 | ! |
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| 494 | zchl = 0.05 ! constant chlorophyll |
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| 495 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
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| 496 | zekb(:,:) = rkrgb(1,irgb) ! Separation in R-G-B depending of the chlorophyll |
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| 497 | zekg(:,:) = rkrgb(2,irgb) |
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| 498 | zekr(:,:) = rkrgb(3,irgb) |
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| 499 | ! |
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| 500 | zcoef = ( 1. - rn_abs ) / 3.e0 ! equi-partition in R-G-B |
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| 501 | ze0(:,:,1) = rn_abs |
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| 502 | ze1(:,:,1) = zcoef |
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| 503 | ze2(:,:,1) = zcoef |
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| 504 | ze3(:,:,1) = zcoef |
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| 505 | zea(:,:,1) = tmask(:,:,1) ! = ( ze0+ze1+z2+ze3 ) * tmask |
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[1423] | 506 | |
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[2528] | 507 | DO jk = 2, nksr+1 |
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[1423] | 508 | !CDIR NOVERRCHK |
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[2528] | 509 | DO jj = 1, jpj |
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[1423] | 510 | !CDIR NOVERRCHK |
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[2528] | 511 | DO ji = 1, jpi |
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[4292] | 512 | zc0 = ze0(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * xsi0r ) |
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| 513 | zc1 = ze1(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * zekb(ji,jj) ) |
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| 514 | zc2 = ze2(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * zekg(ji,jj) ) |
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| 515 | zc3 = ze3(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * zekr(ji,jj) ) |
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[2528] | 516 | ze0(ji,jj,jk) = zc0 |
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| 517 | ze1(ji,jj,jk) = zc1 |
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| 518 | ze2(ji,jj,jk) = zc2 |
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| 519 | ze3(ji,jj,jk) = zc3 |
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| 520 | zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
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| 521 | END DO |
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[1423] | 522 | END DO |
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[2528] | 523 | END DO |
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| 524 | ! |
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| 525 | DO jk = 1, nksr |
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[4990] | 526 | ! (ISF) no light penetration below the ice shelves |
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| 527 | etot3(:,:,jk) = r1_rau0_rcp * ( zea(:,:,jk) - zea(:,:,jk+1) ) * tmask(:,:,1) |
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[1423] | 528 | END DO |
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[2528] | 529 | etot3(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
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| 530 | ENDIF |
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[1423] | 531 | ENDIF |
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| 532 | ! |
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[1448] | 533 | ENDIF |
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[1423] | 534 | ! ! ---------------------------------- ! |
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[1448] | 535 | IF( ln_qsr_2bd ) THEN ! 2 bands light penetration ! |
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[1423] | 536 | ! ! ---------------------------------- ! |
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| 537 | ! |
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| 538 | ! ! level of light extinction |
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| 539 | nksr = trc_oce_ext_lev( rn_si1, 1.e2 ) |
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| 540 | IF(lwp) THEN |
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| 541 | WRITE(numout,*) |
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[4292] | 542 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_1d(nksr+1), ' m' |
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[1423] | 543 | ENDIF |
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| 544 | ! |
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[2528] | 545 | IF( lk_vvl ) THEN ! variable volume |
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| 546 | IF(lwp) WRITE(numout,*) ' key_vvl: light distribution will be computed at each time step' |
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| 547 | ELSE ! constant volume: computes one for all |
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[3625] | 548 | zz0 = rn_abs * r1_rau0_rcp |
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| 549 | zz1 = ( 1. - rn_abs ) * r1_rau0_rcp |
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[2528] | 550 | DO jk = 1, nksr !* solar heat absorbed at T-point computed once for all |
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| 551 | DO jj = 1, jpj ! top 400 meters |
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| 552 | DO ji = 1, jpi |
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| 553 | zc0 = zz0 * EXP( -fsdepw(ji,jj,jk )*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk )*xsi1r ) |
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| 554 | zc1 = zz0 * EXP( -fsdepw(ji,jj,jk+1)*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk+1)*xsi1r ) |
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[4990] | 555 | etot3(ji,jj,jk) = ( zc0 * tmask(ji,jj,jk) - zc1 * tmask(ji,jj,jk+1) ) * tmask(ji,jj,1) |
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[2528] | 556 | END DO |
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[1423] | 557 | END DO |
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| 558 | END DO |
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[2528] | 559 | etot3(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
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| 560 | ! |
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| 561 | ENDIF |
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[187] | 562 | ENDIF |
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[1423] | 563 | ! ! ===================================== ! |
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| 564 | ELSE ! No light penetration ! |
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| 565 | ! ! ===================================== ! |
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[457] | 566 | IF(lwp) THEN |
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| 567 | WRITE(numout,*) |
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| 568 | WRITE(numout,*) 'tra_qsr_init : NO solar flux penetration' |
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| 569 | WRITE(numout,*) '~~~~~~~~~~~~' |
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| 570 | ENDIF |
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[3] | 571 | ENDIF |
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[503] | 572 | ! |
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[3294] | 573 | CALL wrk_dealloc( jpi, jpj, zekb, zekg, zekr ) |
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| 574 | CALL wrk_dealloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) |
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[2715] | 575 | ! |
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[3294] | 576 | IF( nn_timing == 1 ) CALL timing_stop('tra_qsr_init') |
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| 577 | ! |
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[3] | 578 | END SUBROUTINE tra_qsr_init |
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| 579 | |
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| 580 | !!====================================================================== |
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| 581 | END MODULE traqsr |
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