[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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[2024] | 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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[2148] | 29 | USE restart ! ocean restart |
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[3] | 30 | |
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| 31 | IMPLICIT NONE |
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| 32 | PRIVATE |
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| 33 | |
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[2024] | 34 | PUBLIC tra_qsr ! routine called by step.F90 (ln_traqsr=T) |
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| 35 | PUBLIC tra_qsr_init ! routine called by opa.F90 |
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[3] | 36 | |
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[1601] | 37 | ! !!* Namelist namtra_qsr: penetrative solar radiation |
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[1423] | 38 | LOGICAL , PUBLIC :: ln_traqsr = .TRUE. !: light absorption (qsr) flag |
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| 39 | LOGICAL , PUBLIC :: ln_qsr_rgb = .FALSE. !: Red-Green-Blue light absorption flag |
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[1448] | 40 | LOGICAL , PUBLIC :: ln_qsr_2bd = .TRUE. !: 2 band light absorption flag |
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[1423] | 41 | LOGICAL , PUBLIC :: ln_qsr_bio = .FALSE. !: bio-model light absorption flag |
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| 42 | INTEGER , PUBLIC :: nn_chldta = 0 !: use Chlorophyll data (=1) or not (=0) |
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| 43 | REAL(wp), PUBLIC :: rn_abs = 0.58_wp !: fraction absorbed in the very near surface (RGB & 2 bands) |
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| 44 | REAL(wp), PUBLIC :: rn_si0 = 0.35_wp !: very near surface depth of extinction (RGB & 2 bands) |
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| 45 | REAL(wp), PUBLIC :: rn_si1 = 23.0_wp !: deepest depth of extinction (water type I) (2 bands) |
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[187] | 46 | |
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[1445] | 47 | ! Module variables |
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[2317] | 48 | REAL(wp) :: xsi0r !: inverse of rn_si0 |
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| 49 | REAL(wp) :: xsi1r !: inverse of rn_si1 |
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[2224] | 50 | !$AGRIF_DO_NOT_TREAT |
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[1423] | 51 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_chl ! structure of input Chl (file informations, fields read) |
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[2148] | 52 | INTEGER, PUBLIC :: nksr ! levels below which the light cannot penetrate ( depth larger than 391 m) |
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[1445] | 53 | REAL(wp), DIMENSION(3,61) :: rkrgb !: tabulated attenuation coefficients for RGB absorption |
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[2224] | 54 | !$AGRIF_END_DO_NOT_TREAT |
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[3] | 55 | |
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| 56 | !! * Substitutions |
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| 57 | # include "domzgr_substitute.h90" |
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| 58 | # include "vectopt_loop_substitute.h90" |
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| 59 | !!---------------------------------------------------------------------- |
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[2287] | 60 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[888] | 61 | !! $Id$ |
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[2287] | 62 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[3] | 63 | !!---------------------------------------------------------------------- |
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| 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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[3] | 94 | !! |
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[503] | 95 | INTEGER, INTENT(in) :: kt ! ocean time-step |
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| 96 | !! |
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[1423] | 97 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 98 | INTEGER :: irgb ! temporary integers |
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[2317] | 99 | REAL(wp) :: zchl, zcoef ! temporary scalars |
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[1423] | 100 | REAL(wp) :: zc0, zc1, zc2, zc3 ! - - |
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[2317] | 101 | REAL(wp) :: zz0, zz1 ! - - |
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[2148] | 102 | REAL(wp) :: z1_e3t, zfact ! - - |
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[1423] | 103 | REAL(wp), DIMENSION(jpi,jpj) :: zekb, zekg, zekr ! 2D workspace |
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| 104 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: ze0, ze1 , ze2, ze3, zea ! 3D workspace |
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[2326] | 105 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: ztrdt |
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[3] | 106 | !!---------------------------------------------------------------------- |
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[216] | 107 | |
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[3] | 108 | IF( kt == nit000 ) THEN |
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[503] | 109 | IF(lwp) WRITE(numout,*) |
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| 110 | IF(lwp) WRITE(numout,*) 'tra_qsr : penetration of the surface solar radiation' |
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| 111 | IF(lwp) WRITE(numout,*) '~~~~~~~' |
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[1423] | 112 | IF( .NOT.ln_traqsr ) RETURN |
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[3] | 113 | ENDIF |
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| 114 | |
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[503] | 115 | IF( l_trdtra ) THEN ! Save ta and sa trends |
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[2024] | 116 | ALLOCATE( ztrdt(jpi,jpj,jpk) ) ; ztrdt(:,:,:) = tsa(:,:,:,jp_tem) |
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[216] | 117 | ENDIF |
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[2148] | 118 | |
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| 119 | ! Set before qsr tracer content field |
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| 120 | ! *********************************** |
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| 121 | IF( kt == nit000 ) THEN ! Set the forcing field at nit000 - 1 |
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| 122 | ! ! ----------------------------------- |
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| 123 | IF( ln_rstart .AND. & ! Restart: read in restart file |
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| 124 | & iom_varid( numror, 'qsr_hc_b', ldstop = .FALSE. ) > 0 ) THEN |
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| 125 | IF(lwp) WRITE(numout,*) ' nit000-1 qsr tracer content forcing field red in the restart file' |
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| 126 | zfact = 0.5e0 |
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| 127 | CALL iom_get( numror, jpdom_autoglo, 'qsr_hc_b', qsr_hc_b ) ! before heat content trend due to Qsr flux |
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| 128 | ELSE ! No restart or restart not found: Euler forward time stepping |
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| 129 | zfact = 1.e0 |
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| 130 | qsr_hc_b(:,:,:) = 0.e0 |
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| 131 | ENDIF |
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| 132 | ELSE ! Swap of forcing field |
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| 133 | ! ! --------------------- |
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| 134 | zfact = 0.5e0 |
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[2257] | 135 | qsr_hc_b(:,:,:) = qsr_hc(:,:,:) |
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[2148] | 136 | ENDIF |
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| 137 | ! Compute now qsr tracer content field |
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| 138 | ! ************************************ |
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[1423] | 139 | |
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| 140 | ! ! ============================================== ! |
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[1445] | 141 | IF( lk_qsr_bio .AND. ln_qsr_bio ) THEN ! bio-model fluxes : all vertical coordinates ! |
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[1423] | 142 | ! ! ============================================== ! |
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| 143 | DO jk = 1, jpkm1 |
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[2326] | 144 | qsr_hc(:,:,jk) = ro0cpr * ( etot3(:,:,jk) - etot3(:,:,jk+1) ) |
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| 145 | END DO |
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| 146 | ! Add to the general trend |
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| 147 | DO jk = 1, jpkm1 |
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| 148 | DO jj = 2, jpjm1 |
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[3] | 149 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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[2326] | 150 | z1_e3t = zfact / fse3t(ji,jj,jk) |
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| 151 | 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] | 152 | END DO |
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| 153 | END DO |
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[1423] | 154 | END DO |
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[1756] | 155 | CALL iom_put( 'qsr3d', etot3 ) ! Shortwave Radiation 3D distribution |
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[1423] | 156 | ! ! ============================================== ! |
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| 157 | ELSE ! Ocean alone : |
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| 158 | ! ! ============================================== ! |
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| 159 | ! |
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| 160 | ! ! ------------------------- ! |
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| 161 | IF( ln_qsr_rgb) THEN ! R-G-B light penetration ! |
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| 162 | ! ! ------------------------- ! |
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| 163 | ! Set chlorophyl concentration |
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[2317] | 164 | IF( nn_chldta == 1 .OR. lk_vvl ) THEN !* Variable Chlorophyll or ocean volume |
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[1423] | 165 | ! |
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[2317] | 166 | IF( nn_chldta == 1 ) THEN !* Variable Chlorophyll |
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| 167 | ! |
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| 168 | CALL fld_read( kt, 1, sf_chl ) ! Read Chl data and provides it at the current time step |
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| 169 | ! |
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[1423] | 170 | !CDIR COLLAPSE |
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| 171 | !CDIR NOVERRCHK |
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[2317] | 172 | DO jj = 1, jpj ! Separation in R-G-B depending of the surface Chl |
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[1423] | 173 | !CDIR NOVERRCHK |
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[2317] | 174 | DO ji = 1, jpi |
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| 175 | zchl = MIN( 10. , MAX( 0.03, sf_chl(1)%fnow(ji,jj,1) ) ) |
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| 176 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
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| 177 | zekb(ji,jj) = rkrgb(1,irgb) |
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| 178 | zekg(ji,jj) = rkrgb(2,irgb) |
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| 179 | zekr(ji,jj) = rkrgb(3,irgb) |
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| 180 | END DO |
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[187] | 181 | END DO |
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[2317] | 182 | ELSE ! Variable ocean volume but constant chrlorophyll |
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| 183 | zchl = 0.05 ! constant chlorophyll |
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| 184 | irgb = NINT( 41 + 20.*LOG10( zchl ) + 1.e-15 ) |
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| 185 | zekb(:,:) = rkrgb(1,irgb) ! Separation in R-G-B depending of the chlorophyll |
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| 186 | zekg(:,:) = rkrgb(2,irgb) |
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| 187 | zekr(:,:) = rkrgb(3,irgb) |
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| 188 | ENDIF |
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[1423] | 189 | ! |
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| 190 | zcoef = ( 1. - rn_abs ) / 3.e0 ! equi-partition in R-G-B |
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| 191 | ze0(:,:,1) = rn_abs * qsr(:,:) |
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| 192 | ze1(:,:,1) = zcoef * qsr(:,:) |
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| 193 | ze2(:,:,1) = zcoef * qsr(:,:) |
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| 194 | ze3(:,:,1) = zcoef * qsr(:,:) |
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| 195 | zea(:,:,1) = qsr(:,:) |
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| 196 | ! |
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| 197 | DO jk = 2, nksr+1 |
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| 198 | !CDIR NOVERRCHK |
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| 199 | DO jj = 1, jpj |
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| 200 | !CDIR NOVERRCHK |
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| 201 | DO ji = 1, jpi |
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[2317] | 202 | zc0 = ze0(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * xsi0r ) |
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[1423] | 203 | zc1 = ze1(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekb(ji,jj) ) |
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| 204 | zc2 = ze2(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekg(ji,jj) ) |
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| 205 | zc3 = ze3(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekr(ji,jj) ) |
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| 206 | ze0(ji,jj,jk) = zc0 |
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| 207 | ze1(ji,jj,jk) = zc1 |
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| 208 | ze2(ji,jj,jk) = zc2 |
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| 209 | ze3(ji,jj,jk) = zc3 |
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| 210 | zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
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| 211 | END DO |
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| 212 | END DO |
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| 213 | END DO |
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| 214 | ! |
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| 215 | DO jk = 1, nksr ! compute and add qsr trend to ta |
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[2257] | 216 | qsr_hc(:,:,jk) = ro0cpr * ( zea(:,:,jk) - zea(:,:,jk+1) ) |
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[1423] | 217 | END DO |
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[1756] | 218 | zea(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
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| 219 | CALL iom_put( 'qsr3d', zea ) ! Shortwave Radiation 3D distribution |
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[1423] | 220 | ! |
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| 221 | ELSE !* Constant Chlorophyll |
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| 222 | DO jk = 1, nksr |
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[2257] | 223 | qsr_hc(:,:,jk) = etot3(:,:,jk) * qsr(:,:) |
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[1423] | 224 | END DO |
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| 225 | ENDIF |
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| 226 | |
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[1448] | 227 | ENDIF |
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| 228 | ! ! ------------------------- ! |
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| 229 | IF( ln_qsr_2bd ) THEN ! 2 band light penetration ! |
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[1423] | 230 | ! ! ------------------------- ! |
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| 231 | ! |
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[2317] | 232 | IF( lk_vvl ) THEN !* variable volume |
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| 233 | zz0 = rn_abs * ro0cpr |
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| 234 | zz1 = ( 1. - rn_abs ) * ro0cpr |
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| 235 | DO jk = 1, nksr ! solar heat absorbed at T-point in the top 400m |
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| 236 | DO jj = 2, jpjm1 |
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| 237 | DO ji = 2, jpim1 |
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| 238 | zc0 = zz0 * EXP( -fsdepw(ji,jj,jk )*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk )*xsi1r ) |
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| 239 | zc1 = zz0 * EXP( -fsdepw(ji,jj,jk+1)*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk+1)*xsi1r ) |
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[2326] | 240 | qsr_hc(ji,jj,jk) = qsr(ji,jj) * ( zc0*tmask(ji,jj,jk) - zc1*tmask(ji,jj,jk+1) ) |
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[2317] | 241 | END DO |
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[187] | 242 | END DO |
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| 243 | END DO |
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[2317] | 244 | ELSE !* constant volume: coef. computed one for all |
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| 245 | DO jk = 1, nksr |
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| 246 | DO jj = 2, jpjm1 |
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| 247 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 248 | qsr_hc(ji,jj,jk) = etot3(ji,jj,jk) * qsr(ji,jj) |
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| 249 | END DO |
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| 250 | END DO |
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| 251 | END DO |
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| 252 | ! |
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| 253 | ENDIF |
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[1423] | 254 | ! |
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[187] | 255 | ENDIF |
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| 256 | ! |
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[2326] | 257 | ! Add to the general trend |
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| 258 | DO jk = 1, nksr |
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| 259 | DO jj = 2, jpjm1 |
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| 260 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 261 | z1_e3t = zfact / fse3t(ji,jj,jk) |
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| 262 | 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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| 263 | END DO |
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[2148] | 264 | END DO |
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| 265 | END DO |
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[2326] | 266 | ! |
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| 267 | ENDIF |
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[2148] | 268 | ! |
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| 269 | IF( lrst_oce ) THEN ! Write in the ocean restart file |
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| 270 | ! ******************************* |
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| 271 | IF(lwp) WRITE(numout,*) |
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| 272 | IF(lwp) WRITE(numout,*) 'qsr tracer content forcing field written in ocean restart file ', & |
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| 273 | & 'at it= ', kt,' date= ', ndastp |
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| 274 | IF(lwp) WRITE(numout,*) '~~~~' |
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[2257] | 275 | CALL iom_rstput( kt, nitrst, numrow, 'qsr_hc_b', qsr_hc ) |
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[2148] | 276 | ! |
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| 277 | ENDIF |
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[3] | 278 | |
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[503] | 279 | IF( l_trdtra ) THEN ! qsr tracers trends saved for diagnostics |
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[2024] | 280 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) - ztrdt(:,:,:) |
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| 281 | CALL trd_tra( kt, 'TRA', jp_tem, jptra_trd_qsr, ztrdt ) |
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[2326] | 282 | DEALLOCATE( ztrdt ) |
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[3] | 283 | ENDIF |
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[457] | 284 | ! ! print mean trends (used for debugging) |
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[2024] | 285 | IF(ln_ctl) CALL prt_ctl( tab3d_1=tsa(:,:,:,jp_tem), clinfo1=' qsr - Ta: ', mask1=tmask, clinfo3='tra-ta' ) |
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[503] | 286 | ! |
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[3] | 287 | END SUBROUTINE tra_qsr |
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| 288 | |
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| 289 | |
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| 290 | SUBROUTINE tra_qsr_init |
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| 291 | !!---------------------------------------------------------------------- |
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| 292 | !! *** ROUTINE tra_qsr_init *** |
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| 293 | !! |
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| 294 | !! ** Purpose : Initialization for the penetrative solar radiation |
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| 295 | !! |
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| 296 | !! ** Method : The profile of solar radiation within the ocean is set |
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[1423] | 297 | !! from two length scale of penetration (rn_si0,rn_si1) and a ratio |
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[1601] | 298 | !! (rn_abs). These parameters are read in the namtra_qsr namelist. The |
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[3] | 299 | !! default values correspond to clear water (type I in Jerlov' |
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| 300 | !! (1968) classification. |
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| 301 | !! called by tra_qsr at the first timestep (nit000) |
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| 302 | !! |
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[1423] | 303 | !! ** Action : - initialize rn_si0, rn_si1 and rn_abs |
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[3] | 304 | !! |
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[503] | 305 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
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[3] | 306 | !!---------------------------------------------------------------------- |
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[1448] | 307 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 308 | INTEGER :: irgb, ierror ! temporary integer |
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[1454] | 309 | INTEGER :: ioptio, nqsr ! temporary integer |
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[2317] | 310 | REAL(wp) :: zc0 , zc1, zcoef ! temporary scalars |
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[1423] | 311 | REAL(wp) :: zc2 , zc3 , zchl ! - - |
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[2317] | 312 | REAL(wp) :: zz0 , zz1 ! - - |
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[1423] | 313 | REAL(wp), DIMENSION(jpi,jpj) :: zekb, zekg, zekr ! 2D workspace |
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| 314 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: ze0 , ze1 , ze2 , ze3 , zea ! 3D workspace |
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| 315 | !! |
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| 316 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files |
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| 317 | TYPE(FLD_N) :: sn_chl ! informations about the chlorofyl field to be read |
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[1601] | 318 | NAMELIST/namtra_qsr/ sn_chl, cn_dir, ln_traqsr, ln_qsr_rgb, ln_qsr_2bd, ln_qsr_bio, & |
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[2317] | 319 | & nn_chldta, rn_abs, rn_si0, rn_si1 |
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[3] | 320 | !!---------------------------------------------------------------------- |
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| 321 | |
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[1423] | 322 | cn_dir = './' ! directory in which the model is executed |
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| 323 | ! ... default values (NB: frequency positive => hours, negative => months) |
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| 324 | ! ! file ! frequency ! variable ! time interp ! clim ! 'yearly' or ! weights ! rotation ! |
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| 325 | ! ! name ! (hours) ! name ! (T/F) ! (T/F) ! 'monthly' ! filename ! pairs ! |
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| 326 | sn_chl = FLD_N( 'chlorophyll' , -1 , 'CHLA' , .true. , .true. , 'yearly' , '' , '' ) |
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| 327 | ! |
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[1601] | 328 | REWIND( numnam ) ! Read Namelist namtra_qsr : ratio and length of penetration |
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| 329 | READ ( numnam, namtra_qsr ) |
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[1423] | 330 | ! |
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| 331 | IF(lwp) THEN ! control print |
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| 332 | WRITE(numout,*) |
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| 333 | WRITE(numout,*) 'tra_qsr_init : penetration of the surface solar radiation' |
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| 334 | WRITE(numout,*) '~~~~~~~~~~~~' |
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[1601] | 335 | WRITE(numout,*) ' Namelist namtra_qsr : set the parameter of penetration' |
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| 336 | WRITE(numout,*) ' Light penetration (T) or not (F) ln_traqsr = ', ln_traqsr |
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| 337 | WRITE(numout,*) ' RGB (Red-Green-Blue) light penetration ln_qsr_rgb = ', ln_qsr_rgb |
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| 338 | WRITE(numout,*) ' 2 band light penetration ln_qsr_2bd = ', ln_qsr_2bd |
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| 339 | WRITE(numout,*) ' bio-model light penetration ln_qsr_bio = ', ln_qsr_bio |
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| 340 | WRITE(numout,*) ' RGB : Chl data (=1) or cst value (=0) nn_chldta = ', nn_chldta |
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| 341 | WRITE(numout,*) ' RGB & 2 bands: fraction of light (rn_si1) rn_abs = ', rn_abs |
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| 342 | WRITE(numout,*) ' RGB & 2 bands: shortess depth of extinction rn_si0 = ', rn_si0 |
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| 343 | WRITE(numout,*) ' 2 bands: longest depth of extinction rn_si1 = ', rn_si1 |
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[1423] | 344 | ENDIF |
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[1448] | 345 | |
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| 346 | IF( ln_traqsr ) THEN ! control consistency |
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| 347 | ! |
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[1601] | 348 | IF( .NOT.lk_qsr_bio .AND. ln_qsr_bio ) THEN |
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| 349 | CALL ctl_warn( 'No bio model : force ln_qsr_bio = FALSE ' ) |
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[1448] | 350 | ln_qsr_bio = .FALSE. |
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| 351 | ENDIF |
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| 352 | ! |
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| 353 | ioptio = 0 ! Parameter control |
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| 354 | IF( ln_qsr_rgb ) ioptio = ioptio + 1 |
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| 355 | IF( ln_qsr_2bd ) ioptio = ioptio + 1 |
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| 356 | IF( ln_qsr_bio ) ioptio = ioptio + 1 |
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| 357 | ! |
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[2317] | 358 | IF( ioptio /= 1 ) & |
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| 359 | CALL ctl_stop( ' Choose ONE type of light penetration in namelist namtra_qsr', & |
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| 360 | & ' 2 bands, 3 RGB bands or bio-model light penetration' ) |
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[1448] | 361 | ! |
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[1455] | 362 | IF( ln_qsr_rgb .AND. nn_chldta == 0 ) nqsr = 1 |
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| 363 | IF( ln_qsr_rgb .AND. nn_chldta == 1 ) nqsr = 2 |
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| 364 | IF( ln_qsr_2bd ) nqsr = 3 |
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| 365 | IF( ln_qsr_bio ) nqsr = 4 |
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| 366 | ! |
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[1448] | 367 | IF(lwp) THEN ! Print the choice |
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| 368 | WRITE(numout,*) |
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[2317] | 369 | IF( nqsr == 1 ) WRITE(numout,*) ' R-G-B light penetration - Constant Chlorophyll' |
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| 370 | IF( nqsr == 2 ) WRITE(numout,*) ' R-G-B light penetration - Chl data ' |
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| 371 | IF( nqsr == 3 ) WRITE(numout,*) ' 2 bands light penetration' |
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[1455] | 372 | IF( nqsr == 4 ) WRITE(numout,*) ' bio-model light penetration' |
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[1448] | 373 | ENDIF |
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| 374 | ! |
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| 375 | ENDIF |
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[1423] | 376 | ! ! ===================================== ! |
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| 377 | IF( ln_traqsr ) THEN ! Initialisation of Light Penetration ! |
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| 378 | ! ! ===================================== ! |
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| 379 | ! |
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[2317] | 380 | xsi0r = 1.e0 / rn_si0 |
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| 381 | xsi1r = 1.e0 / rn_si1 |
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[1423] | 382 | ! ! ---------------------------------- ! |
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| 383 | IF( ln_qsr_rgb ) THEN ! Red-Green-Blue light penetration ! |
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| 384 | ! ! ---------------------------------- ! |
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| 385 | ! |
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[2317] | 386 | CALL trc_oce_rgb( rkrgb ) !* tabulated attenuation coef. |
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| 387 | ! |
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| 388 | ! !* level of light extinction |
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| 389 | IF( ln_sco ) THEN ; nksr = jpkm1 |
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| 390 | ELSE ; nksr = trc_oce_ext_lev( r_si2, 0.33e2 ) |
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[457] | 391 | ENDIF |
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[2317] | 392 | |
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| 393 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_0(nksr+1), ' m' |
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[1423] | 394 | ! |
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| 395 | IF( nn_chldta == 1 ) THEN !* Chl data : set sf_chl structure |
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| 396 | IF(lwp) WRITE(numout,*) |
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| 397 | IF(lwp) WRITE(numout,*) ' Chlorophyll read in a file' |
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| 398 | ALLOCATE( sf_chl(1), STAT=ierror ) |
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| 399 | IF( ierror > 0 ) THEN |
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| 400 | CALL ctl_stop( 'tra_qsr_init: unable to allocate sf_chl structure' ) ; RETURN |
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| 401 | ENDIF |
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[1951] | 402 | ALLOCATE( sf_chl(1)%fnow(jpi,jpj,1) ) |
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[2236] | 403 | IF( sn_chl%ln_tint )ALLOCATE( sf_chl(1)%fdta(jpi,jpj,1,2) ) |
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[1423] | 404 | ! ! fill sf_chl with sn_chl and control print |
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| 405 | CALL fld_fill( sf_chl, (/ sn_chl /), cn_dir, 'tra_qsr_init', & |
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[1601] | 406 | & 'Solar penetration function of read chlorophyll', 'namtra_qsr' ) |
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[1423] | 407 | ! |
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| 408 | ELSE !* constant Chl : compute once for all the distribution of light (etot3) |
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| 409 | IF(lwp) WRITE(numout,*) |
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| 410 | IF(lwp) WRITE(numout,*) ' Constant Chlorophyll concentration = 0.05' |
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[2317] | 411 | IF( lk_vvl ) THEN ! variable volume |
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| 412 | IF(lwp) WRITE(numout,*) ' key_vvl: light distribution will be computed at each time step' |
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| 413 | ELSE ! constant volume: computes one for all |
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| 414 | IF(lwp) WRITE(numout,*) ' fixed volume: light distribution computed one for all' |
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| 415 | ! |
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| 416 | zchl = 0.05 ! constant chlorophyll |
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| 417 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
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| 418 | zekb(:,:) = rkrgb(1,irgb) ! Separation in R-G-B depending of the chlorophyll |
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| 419 | zekg(:,:) = rkrgb(2,irgb) |
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| 420 | zekr(:,:) = rkrgb(3,irgb) |
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| 421 | ! |
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| 422 | zcoef = ( 1. - rn_abs ) / 3.e0 ! equi-partition in R-G-B |
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| 423 | ze0(:,:,1) = rn_abs |
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| 424 | ze1(:,:,1) = zcoef |
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| 425 | ze2(:,:,1) = zcoef |
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| 426 | ze3(:,:,1) = zcoef |
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| 427 | zea(:,:,1) = tmask(:,:,1) ! = ( ze0+ze1+z2+ze3 ) * tmask |
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[1423] | 428 | |
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[2317] | 429 | DO jk = 2, nksr+1 |
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[1423] | 430 | !CDIR NOVERRCHK |
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[2317] | 431 | DO jj = 1, jpj |
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[1423] | 432 | !CDIR NOVERRCHK |
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[2317] | 433 | DO ji = 1, jpi |
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| 434 | zc0 = ze0(ji,jj,jk-1) * EXP( - fse3t_0(ji,jj,jk-1) * xsi0r ) |
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| 435 | zc1 = ze1(ji,jj,jk-1) * EXP( - fse3t_0(ji,jj,jk-1) * zekb(ji,jj) ) |
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| 436 | zc2 = ze2(ji,jj,jk-1) * EXP( - fse3t_0(ji,jj,jk-1) * zekg(ji,jj) ) |
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| 437 | zc3 = ze3(ji,jj,jk-1) * EXP( - fse3t_0(ji,jj,jk-1) * zekr(ji,jj) ) |
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| 438 | ze0(ji,jj,jk) = zc0 |
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| 439 | ze1(ji,jj,jk) = zc1 |
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| 440 | ze2(ji,jj,jk) = zc2 |
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| 441 | ze3(ji,jj,jk) = zc3 |
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| 442 | zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
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| 443 | END DO |
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[1423] | 444 | END DO |
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[2317] | 445 | END DO |
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| 446 | ! |
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| 447 | DO jk = 1, nksr |
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[2326] | 448 | etot3(:,:,jk) = ro0cpr * ( zea(:,:,jk) - zea(:,:,jk+1) ) |
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[1423] | 449 | END DO |
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[2317] | 450 | etot3(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
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| 451 | ENDIF |
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[1423] | 452 | ENDIF |
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| 453 | ! |
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[1448] | 454 | ENDIF |
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[1423] | 455 | ! ! ---------------------------------- ! |
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[1448] | 456 | IF( ln_qsr_2bd ) THEN ! 2 bands light penetration ! |
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[1423] | 457 | ! ! ---------------------------------- ! |
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| 458 | ! |
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| 459 | ! ! level of light extinction |
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| 460 | nksr = trc_oce_ext_lev( rn_si1, 1.e2 ) |
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| 461 | IF(lwp) THEN |
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| 462 | WRITE(numout,*) |
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[2317] | 463 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_0(nksr+1), ' m' |
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[1423] | 464 | ENDIF |
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| 465 | ! |
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[2317] | 466 | IF( lk_vvl ) THEN ! variable volume |
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| 467 | IF(lwp) WRITE(numout,*) ' key_vvl: light distribution will be computed at each time step' |
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| 468 | ELSE ! constant volume: computes one for all |
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| 469 | zz0 = rn_abs * ro0cpr |
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| 470 | zz1 = ( 1. - rn_abs ) * ro0cpr |
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| 471 | DO jk = 1, nksr !* solar heat absorbed at T-point computed once for all |
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| 472 | DO jj = 1, jpj ! top 400 meters |
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| 473 | DO ji = 1, jpi |
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| 474 | zc0 = zz0 * EXP( -fsdepw(ji,jj,jk )*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk )*xsi1r ) |
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| 475 | zc1 = zz0 * EXP( -fsdepw(ji,jj,jk+1)*xsi0r ) + zz1 * EXP( -fsdepw(ji,jj,jk+1)*xsi1r ) |
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[2326] | 476 | etot3(ji,jj,jk) = ( zc0 * tmask(ji,jj,jk) - zc1 * tmask(ji,jj,jk+1) ) |
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[2317] | 477 | END DO |
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[1423] | 478 | END DO |
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| 479 | END DO |
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[2317] | 480 | etot3(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
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| 481 | ! |
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| 482 | ENDIF |
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[187] | 483 | ENDIF |
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[1423] | 484 | ! ! ===================================== ! |
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| 485 | ELSE ! No light penetration ! |
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| 486 | ! ! ===================================== ! |
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[457] | 487 | IF(lwp) THEN |
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| 488 | WRITE(numout,*) |
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| 489 | WRITE(numout,*) 'tra_qsr_init : NO solar flux penetration' |
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| 490 | WRITE(numout,*) '~~~~~~~~~~~~' |
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| 491 | ENDIF |
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[3] | 492 | ENDIF |
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[503] | 493 | ! |
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[3] | 494 | END SUBROUTINE tra_qsr_init |
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| 495 | |
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| 496 | !!====================================================================== |
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| 497 | END MODULE traqsr |
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