| 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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| 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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| 12 | !! 3.4 ! 2012-05 (C. Rousset) store attenuation coef for use in ice model |
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| 13 | !! 3.6 ! 2015-12 (O. Aumont, J. Jouanno, C. Ethe) use vertical profile of chlorophyll |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | !! tra_qsr : trend due to the solar radiation penetration |
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| 18 | !! tra_qsr_init : solar radiation penetration initialization |
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| 19 | !!---------------------------------------------------------------------- |
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| 20 | USE oce ! ocean dynamics and active tracers |
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| 21 | USE dom_oce ! ocean space and time domain |
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| 22 | USE sbc_oce ! surface boundary condition: ocean |
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| 23 | USE trc_oce ! share SMS/Ocean variables |
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| 24 | USE trd_oce ! trends: ocean variables |
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| 25 | USE trdtra ! trends manager: tracers |
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| 26 | USE in_out_manager ! I/O manager |
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| 27 | USE phycst ! physical constants |
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| 28 | USE prtctl ! Print control |
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| 29 | USE iom ! I/O manager |
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| 30 | USE fldread ! read input fields |
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| 31 | USE restart ! ocean restart |
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| 32 | USE lib_mpp ! MPP library |
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| 33 | USE wrk_nemo ! Memory Allocation |
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| 34 | USE timing ! Timing |
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| 35 | USE stopack |
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| 36 | |
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| 37 | IMPLICIT NONE |
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| 38 | PRIVATE |
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| 39 | |
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| 40 | PUBLIC tra_qsr ! routine called by step.F90 (ln_traqsr=T) |
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| 41 | PUBLIC tra_qsr_init ! routine called by nemogcm.F90 |
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| 42 | |
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| 43 | ! !!* Namelist namtra_qsr: penetrative solar radiation |
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| 44 | LOGICAL , PUBLIC :: ln_traqsr !: light absorption (qsr) flag |
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| 45 | LOGICAL , PUBLIC :: ln_qsr_rgb !: Red-Green-Blue light absorption flag |
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| 46 | LOGICAL , PUBLIC :: ln_qsr_2bd !: 2 band light absorption flag |
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| 47 | LOGICAL , PUBLIC :: ln_qsr_bio !: bio-model light absorption flag |
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| 48 | LOGICAL , PUBLIC :: ln_qsr_ice !: light penetration for ice-model LIM3 (clem) |
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| 49 | INTEGER , PUBLIC :: nn_chldta !: use Chlorophyll data (=1) or not (=0) |
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| 50 | REAL(wp), PUBLIC :: rn_abs !: fraction absorbed in the very near surface (RGB & 2 bands) |
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| 51 | REAL(wp), PUBLIC :: rn_si0 !: very near surface depth of extinction (RGB & 2 bands) |
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| 52 | REAL(wp), PUBLIC :: rn_si1 !: deepest depth of extinction (water type I) (2 bands) |
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| 53 | |
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| 54 | ! Module variables |
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| 55 | REAL(wp), ALLOCATABLE :: xsi0r(:,:) !: inverse of rn_si0 |
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| 56 | REAL(wp) :: xsi1r !: inverse of rn_si1 |
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| 57 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_chl ! structure of input Chl (file informations, fields read) |
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| 58 | INTEGER, PUBLIC :: nksr ! levels below which the light cannot penetrate ( depth larger than 391 m) |
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| 59 | REAL(wp), DIMENSION(3,61) :: rkrgb !: tabulated attenuation coefficients for RGB absorption |
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| 60 | |
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| 61 | !! * Substitutions |
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| 62 | # include "domzgr_substitute.h90" |
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| 63 | # include "vectopt_loop_substitute.h90" |
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| 64 | !!---------------------------------------------------------------------- |
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| 65 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 66 | !! $Id$ |
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| 67 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 68 | !!---------------------------------------------------------------------- |
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| 69 | CONTAINS |
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| 70 | |
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| 71 | SUBROUTINE tra_qsr( kt ) |
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| 72 | !!---------------------------------------------------------------------- |
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| 73 | !! *** ROUTINE tra_qsr *** |
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| 74 | !! |
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| 75 | !! ** Purpose : Compute the temperature trend due to the solar radiation |
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| 76 | !! penetration and add it to the general temperature trend. |
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| 77 | !! |
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| 78 | !! ** Method : The profile of the solar radiation within the ocean is defined |
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| 79 | !! through 2 wavebands (rn_si0,rn_si1) or 3 wavebands (RGB) and a ratio rn_abs |
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| 80 | !! Considering the 2 wavebands case: |
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| 81 | !! I(k) = Qsr*( rn_abs*EXP(z(k)/rn_si0) + (1.-rn_abs)*EXP(z(k)/rn_si1) ) |
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| 82 | !! The temperature trend associated with the solar radiation penetration |
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| 83 | !! is given by : zta = 1/e3t dk[ I ] / (rau0*Cp) |
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| 84 | !! At the bottom, boudary condition for the radiation is no flux : |
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| 85 | !! all heat which has not been absorbed in the above levels is put |
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| 86 | !! in the last ocean level. |
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| 87 | !! In z-coordinate case, the computation is only done down to the |
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| 88 | !! level where I(k) < 1.e-15 W/m2. In addition, the coefficients |
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| 89 | !! used for the computation are calculated one for once as they |
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| 90 | !! depends on k only. |
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| 91 | !! |
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| 92 | !! ** Action : - update ta with the penetrative solar radiation trend |
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| 93 | !! - save the trend in ttrd ('key_trdtra') |
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| 94 | !! |
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| 95 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
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| 96 | !! Lengaigne et al. 2007, Clim. Dyn., V28, 5, 503-516. |
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| 97 | !! Morel, A. et Berthon, JF, 1989, Limnol Oceanogr 34(8), 1545-1562 |
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| 98 | !!---------------------------------------------------------------------- |
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| 99 | ! |
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| 100 | INTEGER, INTENT(in) :: kt ! ocean time-step |
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| 101 | ! |
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| 102 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 103 | INTEGER :: irgb ! local integers |
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| 104 | REAL(wp) :: zchl, zcoef, zfact ! local scalars |
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| 105 | REAL(wp) :: zc0, zc1, zc2, zc3 ! - - |
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| 106 | REAL(wp) :: zz0, zz1, z1_e3t ! - - |
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| 107 | REAL(wp) :: zCb, zCmax, zze, zpsi, zpsimax, zdelpsi, zCtot, zCze |
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| 108 | REAL(wp) :: zlogc, zlogc2, zlogc3 |
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| 109 | REAL(wp), POINTER, DIMENSION(:,: ) :: zekb, zekg, zekr |
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| 110 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ze0, ze1, ze2, ze3, zea, ztrdt, zchl3d |
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| 111 | !!-------------------------------------------------------------------------- |
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| 112 | ! |
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| 113 | IF( nn_timing == 1 ) CALL timing_start('tra_qsr') |
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| 114 | ! |
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| 115 | CALL wrk_alloc( jpi, jpj, zekb, zekg, zekr ) |
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| 116 | CALL wrk_alloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea, zchl3d ) |
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| 117 | ! |
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| 118 | IF( kt == nit000 ) THEN |
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| 119 | IF(lwp) WRITE(numout,*) |
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| 120 | IF(lwp) WRITE(numout,*) 'tra_qsr : penetration of the surface solar radiation' |
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| 121 | IF(lwp) WRITE(numout,*) '~~~~~~~' |
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| 122 | IF( .NOT.ln_traqsr ) RETURN |
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| 123 | ENDIF |
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| 124 | |
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| 125 | IF( l_trdtra ) THEN ! Save ta and sa trends |
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| 126 | CALL wrk_alloc( jpi, jpj, jpk, ztrdt ) |
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| 127 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) |
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| 128 | ENDIF |
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| 129 | |
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| 130 | ! Set before qsr tracer content field |
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| 131 | ! *********************************** |
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| 132 | IF( kt == nit000 ) THEN ! Set the forcing field at nit000 - 1 |
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| 133 | ! ! ----------------------------------- |
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| 134 | qsr_hc(:,:,:) = 0.e0 |
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| 135 | ! |
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| 136 | IF( ln_rstart .AND. & ! Restart: read in restart file |
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| 137 | & iom_varid( numror, 'qsr_hc_b', ldstop = .FALSE. ) > 0 ) THEN |
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| 138 | IF(lwp) WRITE(numout,*) ' nit000-1 qsr tracer content forcing field red in the restart file' |
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| 139 | zfact = 0.5e0 |
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| 140 | CALL iom_get( numror, jpdom_autoglo, 'qsr_hc_b', qsr_hc_b ) ! before heat content trend due to Qsr flux |
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| 141 | ELSE ! No restart or restart not found: Euler forward time stepping |
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| 142 | zfact = 1.e0 |
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| 143 | qsr_hc_b(:,:,:) = 0.e0 |
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| 144 | ENDIF |
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| 145 | ELSE ! Swap of forcing field |
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| 146 | ! ! --------------------- |
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| 147 | zfact = 0.5e0 |
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| 148 | qsr_hc_b(:,:,:) = qsr_hc(:,:,:) |
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| 149 | ENDIF |
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| 150 | ! Compute now qsr tracer content field |
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| 151 | ! ************************************ |
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| 152 | |
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| 153 | ! ! ============================================== ! |
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| 154 | IF( lk_qsr_bio .AND. ln_qsr_bio ) THEN ! bio-model fluxes : all vertical coordinates ! |
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| 155 | ! ! ============================================== ! |
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| 156 | DO jk = 1, jpkm1 |
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| 157 | qsr_hc(:,:,jk) = r1_rau0_rcp * ( etot3(:,:,jk) - etot3(:,:,jk+1) ) |
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| 158 | END DO |
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| 159 | ! Add to the general trend |
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| 160 | DO jk = 1, jpkm1 |
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| 161 | DO jj = 2, jpjm1 |
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| 162 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 163 | z1_e3t = zfact / fse3t(ji,jj,jk) |
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| 164 | 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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| 165 | END DO |
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| 166 | END DO |
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| 167 | END DO |
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| 168 | CALL iom_put( 'qsr3d', etot3 ) ! Shortwave Radiation 3D distribution |
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| 169 | ! clem: store attenuation coefficient of the first ocean level |
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| 170 | IF ( ln_qsr_ice ) THEN |
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| 171 | DO jj = 1, jpj |
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| 172 | DO ji = 1, jpi |
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| 173 | IF ( qsr(ji,jj) /= 0._wp ) THEN |
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| 174 | fraqsr_1lev(ji,jj) = ( qsr_hc(ji,jj,1) / ( r1_rau0_rcp * qsr(ji,jj) ) ) |
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| 175 | ELSE |
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| 176 | fraqsr_1lev(ji,jj) = 1. |
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| 177 | ENDIF |
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| 178 | END DO |
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| 179 | END DO |
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| 180 | ENDIF |
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| 181 | ! ! ============================================== ! |
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| 182 | ELSE ! Ocean alone : |
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| 183 | ! ! ============================================== ! |
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| 184 | ! |
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| 185 | ! |
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| 186 | #if defined key_traldf_c2d || key_traldf_c3d |
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| 187 | IF( ln_stopack .AND. ( nn_spp_qsi0 > 0 ) ) THEN |
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| 188 | xsi0r = rn_si0 |
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| 189 | CALL spp_gen(kt, xsi0r, nn_spp_qsi0, rn_qsi0_sd, jk_spp_qsi0 ) |
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| 190 | xsi0r = 1.e0 / xsi0r |
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| 191 | ENDIF |
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| 192 | #else |
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| 193 | IF ( ln_stopack .AND. nn_spp_qsi0 > 0 ) & |
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| 194 | & CALL ctl_stop( 'tra_qsr: parameter perturbation will only work with '// & |
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| 195 | 'key_traldf_c2d or key_traldf_c3d') |
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| 196 | #endif |
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| 197 | |
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| 198 | ! ! ------------------------- ! |
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| 199 | IF( ln_qsr_rgb) THEN ! R-G-B light penetration ! |
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| 200 | ! ! ------------------------- ! |
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| 201 | ! Set chlorophyl concentration |
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| 202 | IF( nn_chldta == 1 .OR. nn_chldta == 2 .OR. lk_vvl ) THEN !* Variable Chlorophyll or ocean volume |
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| 203 | ! |
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| 204 | IF( nn_chldta == 1 ) THEN !* 2D Variable Chlorophyll |
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| 205 | ! |
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| 206 | CALL fld_read( kt, 1, sf_chl ) ! Read Chl data and provides it at the current time step |
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| 207 | DO jk = 1, nksr + 1 |
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| 208 | zchl3d(:,:,jk) = sf_chl(1)%fnow(:,:,1) |
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| 209 | ENDDO |
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| 210 | ! |
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| 211 | ELSE IF( nn_chldta == 2 ) THEN !* -3-D Variable Chlorophyll |
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| 212 | ! |
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| 213 | CALL fld_read( kt, 1, sf_chl ) ! Read Chl data and provides it at the current time step |
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| 214 | !CDIR NOVERRCHK ! |
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| 215 | DO jj = 1, jpj |
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| 216 | !CDIR NOVERRCHK |
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| 217 | DO ji = 1, jpi |
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| 218 | zchl = sf_chl(1)%fnow(ji,jj,1) |
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| 219 | zCtot = 40.6 * zchl**0.459 |
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| 220 | zze = 568.2 * zCtot**(-0.746) |
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| 221 | IF( zze > 102. ) zze = 200.0 * zCtot**(-0.293) |
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| 222 | zlogc = LOG( zchl ) |
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| 223 | zlogc2 = zlogc * zlogc |
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| 224 | zlogc3 = zlogc * zlogc * zlogc |
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| 225 | zCb = 0.768 + 0.087 * zlogc - 0.179 * zlogc2 - 0.025 * zlogc3 |
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| 226 | zCmax = 0.299 - 0.289 * zlogc + 0.579 * zlogc2 |
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| 227 | zpsimax = 0.6 - 0.640 * zlogc + 0.021 * zlogc2 + 0.115 * zlogc3 |
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| 228 | zdelpsi = 0.710 + 0.159 * zlogc + 0.021 * zlogc2 |
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| 229 | zCze = 1.12 * (zchl)**0.803 |
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| 230 | DO jk = 1, nksr + 1 |
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| 231 | zpsi = fsdept(ji,jj,jk) / zze |
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| 232 | zchl3d(ji,jj,jk) = zCze * ( zCb + zCmax * EXP( -( (zpsi - zpsimax) / zdelpsi )**2 ) ) |
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| 233 | END DO |
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| 234 | ! |
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| 235 | END DO |
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| 236 | END DO |
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| 237 | ! |
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| 238 | ELSE !* Variable ocean volume but constant chrlorophyll |
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| 239 | DO jk = 1, nksr + 1 |
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| 240 | zchl3d(:,:,jk) = 0.05 |
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| 241 | ENDDO |
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| 242 | ENDIF |
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| 243 | ! |
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| 244 | zcoef = ( 1. - rn_abs ) / 3.e0 ! equi-partition in R-G-B |
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| 245 | ze0(:,:,1) = rn_abs * qsr(:,:) |
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| 246 | ze1(:,:,1) = zcoef * qsr(:,:) |
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| 247 | ze2(:,:,1) = zcoef * qsr(:,:) |
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| 248 | ze3(:,:,1) = zcoef * qsr(:,:) |
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| 249 | zea(:,:,1) = qsr(:,:) |
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| 250 | ! |
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| 251 | DO jk = 2, nksr+1 |
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| 252 | ! |
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| 253 | DO jj = 1, jpj ! Separation in R-G-B depending of vertical profile of Chl |
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| 254 | !CDIR NOVERRCHK |
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| 255 | DO ji = 1, jpi |
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| 256 | zchl = MIN( 10. , MAX( 0.03, zchl3d(ji,jj,jk) ) ) |
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| 257 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
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| 258 | zekb(ji,jj) = rkrgb(1,irgb) |
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| 259 | zekg(ji,jj) = rkrgb(2,irgb) |
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| 260 | zekr(ji,jj) = rkrgb(3,irgb) |
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| 261 | END DO |
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| 262 | END DO |
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| 263 | !CDIR NOVERRCHK |
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| 264 | DO jj = 1, jpj |
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| 265 | !CDIR NOVERRCHK |
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| 266 | DO ji = 1, jpi |
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| 267 | zc0 = ze0(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * xsi0r(ji,jj) ) |
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| 268 | zc1 = ze1(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekb(ji,jj) ) |
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| 269 | zc2 = ze2(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekg(ji,jj) ) |
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| 270 | zc3 = ze3(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekr(ji,jj) ) |
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| 271 | ze0(ji,jj,jk) = zc0 |
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| 272 | ze1(ji,jj,jk) = zc1 |
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| 273 | ze2(ji,jj,jk) = zc2 |
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| 274 | ze3(ji,jj,jk) = zc3 |
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| 275 | zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
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| 276 | END DO |
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| 277 | END DO |
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| 278 | END DO |
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| 279 | ! |
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| 280 | DO jk = 1, nksr ! compute and add qsr trend to ta |
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| 281 | qsr_hc(:,:,jk) = r1_rau0_rcp * ( zea(:,:,jk) - zea(:,:,jk+1) ) |
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| 282 | END DO |
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| 283 | zea(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
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| 284 | CALL iom_put( 'qsr3d', zea ) ! Shortwave Radiation 3D distribution |
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| 285 | ! |
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| 286 | IF ( ln_qsr_ice ) THEN ! store attenuation coefficient of the first ocean level |
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| 287 | !CDIR NOVERRCHK |
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| 288 | DO jj = 1, jpj ! Separation in R-G-B depending of the surface Chl |
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| 289 | !CDIR NOVERRCHK |
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| 290 | DO ji = 1, jpi |
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| 291 | zchl = MIN( 10. , MAX( 0.03, zchl3d(ji,jj,1) ) ) |
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| 292 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
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| 293 | zekb(ji,jj) = rkrgb(1,irgb) |
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| 294 | zekg(ji,jj) = rkrgb(2,irgb) |
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| 295 | zekr(ji,jj) = rkrgb(3,irgb) |
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| 296 | END DO |
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| 297 | END DO |
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| 298 | ! |
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| 299 | DO jj = 1, jpj |
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| 300 | DO ji = 1, jpi |
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| 301 | zc0 = rn_abs * EXP( - fse3t(ji,jj,1) * xsi0r(ji,jj) ) |
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| 302 | zc1 = zcoef * EXP( - fse3t(ji,jj,1) * zekb(ji,jj) ) |
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| 303 | zc2 = zcoef * EXP( - fse3t(ji,jj,1) * zekg(ji,jj) ) |
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| 304 | zc3 = zcoef * EXP( - fse3t(ji,jj,1) * zekr(ji,jj) ) |
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| 305 | fraqsr_1lev(ji,jj) = 1.0 - ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,2) |
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| 306 | END DO |
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| 307 | END DO |
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| 308 | ! |
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| 309 | ENDIF |
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| 310 | ! |
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| 311 | ELSE !* Constant Chlorophyll |
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| 312 | DO jk = 1, nksr |
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| 313 | qsr_hc(:,:,jk) = etot3(:,:,jk) * qsr(:,:) |
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| 314 | END DO |
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| 315 | ! store attenuation coefficient of the first ocean level |
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| 316 | IF( ln_qsr_ice ) THEN |
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| 317 | fraqsr_1lev(:,:) = etot3(:,:,1) / r1_rau0_rcp |
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| 318 | ENDIF |
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| 319 | ENDIF |
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| 320 | |
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| 321 | ENDIF |
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| 322 | ! ! ------------------------- ! |
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| 323 | IF( ln_qsr_2bd ) THEN ! 2 band light penetration ! |
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| 324 | ! ! ------------------------- ! |
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| 325 | ! |
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| 326 | IF( lk_vvl .OR. ( ln_stopack .AND. ( nn_spp_qsi0 > 0 ) ) ) THEN !* variable volume |
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| 327 | |
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| 328 | zz0 = rn_abs * r1_rau0_rcp |
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| 329 | zz1 = ( 1. - rn_abs ) * r1_rau0_rcp |
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| 330 | DO jk = 1, nksr ! solar heat absorbed at T-point in the top 400m |
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| 331 | DO jj = 1, jpj |
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| 332 | DO ji = 1, jpi |
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| 333 | zc0 = zz0 * EXP( -fsdepw(ji,jj,jk )*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,jk )*xsi1r ) |
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| 334 | zc1 = zz0 * EXP( -fsdepw(ji,jj,jk+1)*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,jk+1)*xsi1r ) |
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| 335 | qsr_hc(ji,jj,jk) = qsr(ji,jj) * ( zc0*tmask(ji,jj,jk) - zc1*tmask(ji,jj,jk+1) ) |
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| 336 | END DO |
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| 337 | END DO |
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| 338 | END DO |
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| 339 | ! clem: store attenuation coefficient of the first ocean level |
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| 340 | IF ( ln_qsr_ice ) THEN |
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| 341 | DO jj = 1, jpj |
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| 342 | DO ji = 1, jpi |
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| 343 | zc0 = zz0 * EXP( -fsdepw(ji,jj,1)*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,1)*xsi1r ) |
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| 344 | zc1 = zz0 * EXP( -fsdepw(ji,jj,2)*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,2)*xsi1r ) |
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| 345 | fraqsr_1lev(ji,jj) = ( zc0*tmask(ji,jj,1) - zc1*tmask(ji,jj,2) ) / r1_rau0_rcp |
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| 346 | END DO |
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| 347 | END DO |
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| 348 | ENDIF |
|---|
| 349 | ELSE !* constant volume: coef. computed one for all |
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| 350 | DO jk = 1, nksr |
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| 351 | DO jj = 2, jpjm1 |
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| 352 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 353 | ! (ISF) no light penetration below the ice shelves |
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| 354 | qsr_hc(ji,jj,jk) = etot3(ji,jj,jk) * qsr(ji,jj) * tmask(ji,jj,1) |
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| 355 | END DO |
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| 356 | END DO |
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| 357 | END DO |
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| 358 | ! clem: store attenuation coefficient of the first ocean level |
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| 359 | IF ( ln_qsr_ice ) THEN |
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| 360 | fraqsr_1lev(:,:) = etot3(:,:,1) / r1_rau0_rcp |
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| 361 | ENDIF |
|---|
| 362 | ! |
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| 363 | ENDIF |
|---|
| 364 | ! |
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| 365 | ENDIF |
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| 366 | ! |
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| 367 | ! Add to the general trend |
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| 368 | DO jk = 1, nksr |
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| 369 | DO jj = 2, jpjm1 |
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| 370 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 371 | z1_e3t = zfact / fse3t(ji,jj,jk) |
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| 372 | 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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| 373 | END DO |
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| 374 | END DO |
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| 375 | END DO |
|---|
| 376 | ! |
|---|
| 377 | ENDIF |
|---|
| 378 | ! |
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| 379 | IF( lrst_oce ) THEN ! Write in the ocean restart file |
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| 380 | ! ******************************* |
|---|
| 381 | IF(lwp) WRITE(numout,*) |
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| 382 | IF(lwp) WRITE(numout,*) 'qsr tracer content forcing field written in ocean restart file ', & |
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| 383 | & 'at it= ', kt,' date= ', ndastp |
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| 384 | IF(lwp) WRITE(numout,*) '~~~~' |
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| 385 | IF(nn_timing == 2) CALL timing_start('iom_rstput') |
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| 386 | CALL iom_rstput( kt, nitrst, numrow, 'qsr_hc_b' , qsr_hc ) |
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| 387 | CALL iom_rstput( kt, nitrst, numrow, 'fraqsr_1lev', fraqsr_1lev ) ! default definition in sbcssm |
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| 388 | IF(nn_timing == 2) CALL timing_stop('iom_rstput') |
|---|
| 389 | ! |
|---|
| 390 | ENDIF |
|---|
| 391 | |
|---|
| 392 | IF( l_trdtra ) THEN ! qsr tracers trends saved for diagnostics |
|---|
| 393 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) - ztrdt(:,:,:) |
|---|
| 394 | CALL trd_tra( kt, 'TRA', jp_tem, jptra_qsr, ztrdt ) |
|---|
| 395 | CALL wrk_dealloc( jpi, jpj, jpk, ztrdt ) |
|---|
| 396 | ENDIF |
|---|
| 397 | ! ! print mean trends (used for debugging) |
|---|
| 398 | IF(ln_ctl) CALL prt_ctl( tab3d_1=tsa(:,:,:,jp_tem), clinfo1=' qsr - Ta: ', mask1=tmask, clinfo3='tra-ta' ) |
|---|
| 399 | ! |
|---|
| 400 | CALL wrk_dealloc( jpi, jpj, zekb, zekg, zekr ) |
|---|
| 401 | CALL wrk_dealloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea, zchl3d ) |
|---|
| 402 | ! |
|---|
| 403 | IF( nn_timing == 1 ) CALL timing_stop('tra_qsr') |
|---|
| 404 | ! |
|---|
| 405 | END SUBROUTINE tra_qsr |
|---|
| 406 | |
|---|
| 407 | |
|---|
| 408 | SUBROUTINE tra_qsr_init |
|---|
| 409 | !!---------------------------------------------------------------------- |
|---|
| 410 | !! *** ROUTINE tra_qsr_init *** |
|---|
| 411 | !! |
|---|
| 412 | !! ** Purpose : Initialization for the penetrative solar radiation |
|---|
| 413 | !! |
|---|
| 414 | !! ** Method : The profile of solar radiation within the ocean is set |
|---|
| 415 | !! from two length scale of penetration (rn_si0,rn_si1) and a ratio |
|---|
| 416 | !! (rn_abs). These parameters are read in the namtra_qsr namelist. The |
|---|
| 417 | !! default values correspond to clear water (type I in Jerlov' |
|---|
| 418 | !! (1968) classification. |
|---|
| 419 | !! called by tra_qsr at the first timestep (nit000) |
|---|
| 420 | !! |
|---|
| 421 | !! ** Action : - initialize rn_si0, rn_si1 and rn_abs |
|---|
| 422 | !! |
|---|
| 423 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
|---|
| 424 | !!---------------------------------------------------------------------- |
|---|
| 425 | ! |
|---|
| 426 | INTEGER :: ji, jj, jk ! dummy loop indices |
|---|
| 427 | INTEGER :: irgb, ierror, ioptio, nqsr ! local integer |
|---|
| 428 | INTEGER :: ios ! Local integer output status for namelist read |
|---|
| 429 | REAL(wp) :: zz0, zc0 , zc1, zcoef ! local scalars |
|---|
| 430 | REAL(wp) :: zz1, zc2 , zc3, zchl ! - - |
|---|
| 431 | REAL(wp), POINTER, DIMENSION(:,: ) :: zekb, zekg, zekr |
|---|
| 432 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ze0, ze1, ze2, ze3, zea |
|---|
| 433 | ! |
|---|
| 434 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files |
|---|
| 435 | TYPE(FLD_N) :: sn_chl ! informations about the chlorofyl field to be read |
|---|
| 436 | !! |
|---|
| 437 | NAMELIST/namtra_qsr/ sn_chl, cn_dir, ln_traqsr, ln_qsr_rgb, ln_qsr_2bd, ln_qsr_bio, ln_qsr_ice, & |
|---|
| 438 | & nn_chldta, rn_abs, rn_si0, rn_si1 |
|---|
| 439 | !!---------------------------------------------------------------------- |
|---|
| 440 | |
|---|
| 441 | ! |
|---|
| 442 | IF( nn_timing == 1 ) CALL timing_start('tra_qsr_init') |
|---|
| 443 | ! |
|---|
| 444 | CALL wrk_alloc( jpi, jpj, zekb, zekg, zekr ) |
|---|
| 445 | CALL wrk_alloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) |
|---|
| 446 | ! |
|---|
| 447 | |
|---|
| 448 | REWIND( numnam_ref ) ! Namelist namtra_qsr in reference namelist : Ratio and length of penetration |
|---|
| 449 | READ ( numnam_ref, namtra_qsr, IOSTAT = ios, ERR = 901) |
|---|
| 450 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_qsr in reference namelist', lwp ) |
|---|
| 451 | |
|---|
| 452 | REWIND( numnam_cfg ) ! Namelist namtra_qsr in configuration namelist : Ratio and length of penetration |
|---|
| 453 | READ ( numnam_cfg, namtra_qsr, IOSTAT = ios, ERR = 902 ) |
|---|
| 454 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_qsr in configuration namelist', lwp ) |
|---|
| 455 | IF(lwm) WRITE ( numond, namtra_qsr ) |
|---|
| 456 | ! |
|---|
| 457 | IF(lwp) THEN ! control print |
|---|
| 458 | WRITE(numout,*) |
|---|
| 459 | WRITE(numout,*) 'tra_qsr_init : penetration of the surface solar radiation' |
|---|
| 460 | WRITE(numout,*) '~~~~~~~~~~~~' |
|---|
| 461 | WRITE(numout,*) ' Namelist namtra_qsr : set the parameter of penetration' |
|---|
| 462 | WRITE(numout,*) ' Light penetration (T) or not (F) ln_traqsr = ', ln_traqsr |
|---|
| 463 | WRITE(numout,*) ' RGB (Red-Green-Blue) light penetration ln_qsr_rgb = ', ln_qsr_rgb |
|---|
| 464 | WRITE(numout,*) ' 2 band light penetration ln_qsr_2bd = ', ln_qsr_2bd |
|---|
| 465 | WRITE(numout,*) ' bio-model light penetration ln_qsr_bio = ', ln_qsr_bio |
|---|
| 466 | WRITE(numout,*) ' light penetration for ice-model LIM3 ln_qsr_ice = ', ln_qsr_ice |
|---|
| 467 | WRITE(numout,*) ' RGB : Chl data (=1/2) or cst value (=0) nn_chldta = ', nn_chldta |
|---|
| 468 | WRITE(numout,*) ' RGB & 2 bands: fraction of light (rn_si1) rn_abs = ', rn_abs |
|---|
| 469 | WRITE(numout,*) ' RGB & 2 bands: shortess depth of extinction rn_si0 = ', rn_si0 |
|---|
| 470 | WRITE(numout,*) ' 2 bands: longest depth of extinction rn_si1 = ', rn_si1 |
|---|
| 471 | ENDIF |
|---|
| 472 | |
|---|
| 473 | IF( ln_traqsr ) THEN ! control consistency |
|---|
| 474 | ! |
|---|
| 475 | IF( .NOT.lk_qsr_bio .AND. ln_qsr_bio ) THEN |
|---|
| 476 | CALL ctl_warn( 'No bio model : force ln_qsr_bio = FALSE ' ) |
|---|
| 477 | ln_qsr_bio = .FALSE. |
|---|
| 478 | ENDIF |
|---|
| 479 | ! |
|---|
| 480 | ioptio = 0 ! Parameter control |
|---|
| 481 | IF( ln_qsr_rgb ) ioptio = ioptio + 1 |
|---|
| 482 | IF( ln_qsr_2bd ) ioptio = ioptio + 1 |
|---|
| 483 | IF( ln_qsr_bio ) ioptio = ioptio + 1 |
|---|
| 484 | ! |
|---|
| 485 | IF( ioptio /= 1 ) & |
|---|
| 486 | CALL ctl_stop( ' Choose ONE type of light penetration in namelist namtra_qsr', & |
|---|
| 487 | & ' 2 bands, 3 RGB bands or bio-model light penetration' ) |
|---|
| 488 | ! |
|---|
| 489 | IF( ln_qsr_rgb .AND. nn_chldta == 0 ) nqsr = 1 |
|---|
| 490 | IF( ln_qsr_rgb .AND. nn_chldta == 1 ) nqsr = 2 |
|---|
| 491 | IF( ln_qsr_rgb .AND. nn_chldta == 2 ) nqsr = 3 |
|---|
| 492 | IF( ln_qsr_2bd ) nqsr = 4 |
|---|
| 493 | IF( ln_qsr_bio ) nqsr = 5 |
|---|
| 494 | ! |
|---|
| 495 | IF(lwp) THEN ! Print the choice |
|---|
| 496 | WRITE(numout,*) |
|---|
| 497 | IF( nqsr == 1 ) WRITE(numout,*) ' R-G-B light penetration - Constant Chlorophyll' |
|---|
| 498 | IF( nqsr == 2 ) WRITE(numout,*) ' R-G-B light penetration - 2D Chl data ' |
|---|
| 499 | IF( nqsr == 3 ) WRITE(numout,*) ' R-G-B light penetration - 3D Chl data ' |
|---|
| 500 | IF( nqsr == 4 ) WRITE(numout,*) ' 2 bands light penetration' |
|---|
| 501 | IF( nqsr == 5 ) WRITE(numout,*) ' bio-model light penetration' |
|---|
| 502 | ENDIF |
|---|
| 503 | ! |
|---|
| 504 | ENDIF |
|---|
| 505 | ! ! ===================================== ! |
|---|
| 506 | IF( ln_traqsr ) THEN ! Initialisation of Light Penetration ! |
|---|
| 507 | ! ! ===================================== ! |
|---|
| 508 | ! |
|---|
| 509 | ALLOCATE( xsi0r(jpi,jpj) ) |
|---|
| 510 | xsi0r = 1.e0 / rn_si0 |
|---|
| 511 | xsi1r = 1.e0 / rn_si1 |
|---|
| 512 | ! ! ---------------------------------- ! |
|---|
| 513 | IF( ln_qsr_rgb ) THEN ! Red-Green-Blue light penetration ! |
|---|
| 514 | ! ! ---------------------------------- ! |
|---|
| 515 | ! |
|---|
| 516 | CALL trc_oce_rgb( rkrgb ) !* tabulated attenuation coef. |
|---|
| 517 | ! |
|---|
| 518 | ! !* level of light extinction |
|---|
| 519 | IF( ln_sco ) THEN ; nksr = jpkm1 |
|---|
| 520 | ELSE ; nksr = trc_oce_ext_lev( r_si2, 0.33e2 ) |
|---|
| 521 | ENDIF |
|---|
| 522 | |
|---|
| 523 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_1d(nksr+1), ' m' |
|---|
| 524 | ! |
|---|
| 525 | IF( nn_chldta == 1 .OR. nn_chldta == 2 ) THEN !* Chl data : set sf_chl structure |
|---|
| 526 | IF(lwp) WRITE(numout,*) |
|---|
| 527 | IF(lwp) WRITE(numout,*) ' Chlorophyll read in a file' |
|---|
| 528 | ALLOCATE( sf_chl(1), STAT=ierror ) |
|---|
| 529 | IF( ierror > 0 ) THEN |
|---|
| 530 | CALL ctl_stop( 'tra_qsr_init: unable to allocate sf_chl structure' ) ; RETURN |
|---|
| 531 | ENDIF |
|---|
| 532 | ALLOCATE( sf_chl(1)%fnow(jpi,jpj,1) ) |
|---|
| 533 | IF( sn_chl%ln_tint )ALLOCATE( sf_chl(1)%fdta(jpi,jpj,1,2) ) |
|---|
| 534 | ! ! fill sf_chl with sn_chl and control print |
|---|
| 535 | CALL fld_fill( sf_chl, (/ sn_chl /), cn_dir, 'tra_qsr_init', & |
|---|
| 536 | & 'Solar penetration function of read chlorophyll', 'namtra_qsr' ) |
|---|
| 537 | ! |
|---|
| 538 | ELSE !* constant Chl : compute once for all the distribution of light (etot3) |
|---|
| 539 | IF(lwp) WRITE(numout,*) |
|---|
| 540 | IF(lwp) WRITE(numout,*) ' Constant Chlorophyll concentration = 0.05' |
|---|
| 541 | IF( lk_vvl ) THEN ! variable volume |
|---|
| 542 | IF(lwp) WRITE(numout,*) ' key_vvl: light distribution will be computed at each time step' |
|---|
| 543 | ELSE ! constant volume: computes one for all |
|---|
| 544 | IF(lwp) WRITE(numout,*) ' fixed volume: light distribution computed one for all' |
|---|
| 545 | ! |
|---|
| 546 | zchl = 0.05 ! constant chlorophyll |
|---|
| 547 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
|---|
| 548 | zekb(:,:) = rkrgb(1,irgb) ! Separation in R-G-B depending of the chlorophyll |
|---|
| 549 | zekg(:,:) = rkrgb(2,irgb) |
|---|
| 550 | zekr(:,:) = rkrgb(3,irgb) |
|---|
| 551 | ! |
|---|
| 552 | zcoef = ( 1. - rn_abs ) / 3.e0 ! equi-partition in R-G-B |
|---|
| 553 | ze0(:,:,1) = rn_abs |
|---|
| 554 | ze1(:,:,1) = zcoef |
|---|
| 555 | ze2(:,:,1) = zcoef |
|---|
| 556 | ze3(:,:,1) = zcoef |
|---|
| 557 | zea(:,:,1) = tmask(:,:,1) ! = ( ze0+ze1+z2+ze3 ) * tmask |
|---|
| 558 | |
|---|
| 559 | DO jk = 2, nksr+1 |
|---|
| 560 | !CDIR NOVERRCHK |
|---|
| 561 | DO jj = 1, jpj |
|---|
| 562 | !CDIR NOVERRCHK |
|---|
| 563 | DO ji = 1, jpi |
|---|
| 564 | zc0 = ze0(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * xsi0r(ji,jj) ) |
|---|
| 565 | zc1 = ze1(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * zekb(ji,jj) ) |
|---|
| 566 | zc2 = ze2(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * zekg(ji,jj) ) |
|---|
| 567 | zc3 = ze3(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * zekr(ji,jj) ) |
|---|
| 568 | ze0(ji,jj,jk) = zc0 |
|---|
| 569 | ze1(ji,jj,jk) = zc1 |
|---|
| 570 | ze2(ji,jj,jk) = zc2 |
|---|
| 571 | ze3(ji,jj,jk) = zc3 |
|---|
| 572 | zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
|---|
| 573 | END DO |
|---|
| 574 | END DO |
|---|
| 575 | END DO |
|---|
| 576 | ! |
|---|
| 577 | DO jk = 1, nksr |
|---|
| 578 | ! (ISF) no light penetration below the ice shelves |
|---|
| 579 | etot3(:,:,jk) = r1_rau0_rcp * ( zea(:,:,jk) - zea(:,:,jk+1) ) * tmask(:,:,1) |
|---|
| 580 | END DO |
|---|
| 581 | etot3(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
|---|
| 582 | ENDIF |
|---|
| 583 | ENDIF |
|---|
| 584 | ! |
|---|
| 585 | ENDIF |
|---|
| 586 | ! ! ---------------------------------- ! |
|---|
| 587 | IF( ln_qsr_2bd ) THEN ! 2 bands light penetration ! |
|---|
| 588 | ! ! ---------------------------------- ! |
|---|
| 589 | ! |
|---|
| 590 | ! ! level of light extinction |
|---|
| 591 | nksr = trc_oce_ext_lev( rn_si1, 1.e2 ) |
|---|
| 592 | IF(lwp) THEN |
|---|
| 593 | WRITE(numout,*) |
|---|
| 594 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_1d(nksr+1), ' m' |
|---|
| 595 | ENDIF |
|---|
| 596 | ! |
|---|
| 597 | IF( lk_vvl ) THEN ! variable volume |
|---|
| 598 | IF(lwp) WRITE(numout,*) ' key_vvl: light distribution will be computed at each time step' |
|---|
| 599 | ELSE ! constant volume: computes one for all |
|---|
| 600 | zz0 = rn_abs * r1_rau0_rcp |
|---|
| 601 | zz1 = ( 1. - rn_abs ) * r1_rau0_rcp |
|---|
| 602 | DO jk = 1, nksr !* solar heat absorbed at T-point computed once for all |
|---|
| 603 | DO jj = 1, jpj ! top 400 meters |
|---|
| 604 | DO ji = 1, jpi |
|---|
| 605 | zc0 = zz0 * EXP( -fsdepw(ji,jj,jk )*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,jk )*xsi1r ) |
|---|
| 606 | zc1 = zz0 * EXP( -fsdepw(ji,jj,jk+1)*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,jk+1)*xsi1r ) |
|---|
| 607 | etot3(ji,jj,jk) = ( zc0 * tmask(ji,jj,jk) - zc1 * tmask(ji,jj,jk+1) ) * tmask(ji,jj,1) |
|---|
| 608 | END DO |
|---|
| 609 | END DO |
|---|
| 610 | END DO |
|---|
| 611 | etot3(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero |
|---|
| 612 | ! |
|---|
| 613 | ENDIF |
|---|
| 614 | ENDIF |
|---|
| 615 | ! ! ===================================== ! |
|---|
| 616 | ELSE ! No light penetration ! |
|---|
| 617 | ! ! ===================================== ! |
|---|
| 618 | IF(lwp) THEN |
|---|
| 619 | WRITE(numout,*) |
|---|
| 620 | WRITE(numout,*) 'tra_qsr_init : NO solar flux penetration' |
|---|
| 621 | WRITE(numout,*) '~~~~~~~~~~~~' |
|---|
| 622 | ENDIF |
|---|
| 623 | ENDIF |
|---|
| 624 | ! |
|---|
| 625 | ! initialisation of fraqsr_1lev used in sbcssm |
|---|
| 626 | IF( iom_varid( numror, 'fraqsr_1lev', ldstop = .FALSE. ) > 0 ) THEN |
|---|
| 627 | IF(nn_timing == 2) CALL timing_start('iom_rstget') |
|---|
| 628 | CALL iom_get( numror, jpdom_autoglo, 'fraqsr_1lev' , fraqsr_1lev ) |
|---|
| 629 | IF(nn_timing == 2) CALL timing_stop('iom_rstget') |
|---|
| 630 | ELSE |
|---|
| 631 | fraqsr_1lev(:,:) = 1._wp ! default definition |
|---|
| 632 | ENDIF |
|---|
| 633 | ! |
|---|
| 634 | CALL wrk_dealloc( jpi, jpj, zekb, zekg, zekr ) |
|---|
| 635 | CALL wrk_dealloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) |
|---|
| 636 | ! |
|---|
| 637 | IF( nn_timing == 1 ) CALL timing_stop('tra_qsr_init') |
|---|
| 638 | ! |
|---|
| 639 | END SUBROUTINE tra_qsr_init |
|---|
| 640 | |
|---|
| 641 | !!====================================================================== |
|---|
| 642 | END MODULE traqsr |
|---|
