| 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 | !! 3.6 ! 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 | !! 3.7 ! 2015-11 (G. Madec, A. Coward) remove optimisation for fix volume |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | |
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| 17 | !!---------------------------------------------------------------------- |
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| 18 | !! tra_qsr : temperature trend due to the penetration of solar radiation |
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| 19 | !! tra_qsr_init : initialization of the qsr penetration |
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| 20 | !!---------------------------------------------------------------------- |
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| 21 | USE oce ! ocean dynamics and active tracers |
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| 22 | USE phycst ! physical constants |
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| 23 | USE dom_oce ! ocean space and time domain |
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| 24 | USE sbc_oce ! surface boundary condition: ocean |
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| 25 | USE trc_oce ! share SMS/Ocean variables |
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| 26 | USE trd_oce ! trends: ocean variables |
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| 27 | USE trdtra ! trends manager: tracers |
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| 28 | ! |
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| 29 | USE in_out_manager ! I/O manager |
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| 30 | USE prtctl ! Print control |
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| 31 | USE iom ! I/O library |
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| 32 | USE fldread ! read input fields |
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| 33 | USE restart ! ocean restart |
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| 34 | USE lib_mpp ! MPP library |
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| 35 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 36 | USE timing ! Timing |
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| 37 | |
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| 38 | IMPLICIT NONE |
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| 39 | PRIVATE |
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| 40 | |
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| 41 | PUBLIC tra_qsr ! routine called by step.F90 (ln_traqsr=T) |
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| 42 | PUBLIC tra_qsr_init ! routine called by nemogcm.F90 |
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| 43 | |
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| 44 | ! !!* Namelist namtra_qsr: penetrative solar radiation |
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| 45 | LOGICAL , PUBLIC :: ln_traqsr !: light absorption (qsr) flag |
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| 46 | LOGICAL , PUBLIC :: ln_qsr_rgb !: Red-Green-Blue light absorption flag |
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| 47 | LOGICAL , PUBLIC :: ln_qsr_2bd !: 2 band light absorption flag |
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| 48 | LOGICAL , PUBLIC :: ln_qsr_bio !: bio-model light absorption flag |
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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 | INTEGER , PUBLIC :: nksr !: levels below which the light cannot penetrate (depth larger than 391 m) |
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| 55 | |
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| 56 | INTEGER, PARAMETER :: np_RGB = 1 ! R-G-B light penetration with constant Chlorophyll |
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| 57 | INTEGER, PARAMETER :: np_RGBc = 2 ! R-G-B light penetration with Chlorophyll data |
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| 58 | INTEGER, PARAMETER :: np_2BD = 3 ! 2 bands light penetration |
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| 59 | INTEGER, PARAMETER :: np_BIO = 4 ! bio-model light penetration |
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| 60 | ! |
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| 61 | INTEGER :: nqsr ! user choice of the type of light penetration |
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| 62 | REAL(wp) :: xsi0r ! inverse of rn_si0 |
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| 63 | REAL(wp) :: xsi1r ! inverse of rn_si1 |
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| 64 | ! |
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| 65 | REAL(wp) , DIMENSION(3,61) :: rkrgb ! tabulated attenuation coefficients for RGB absorption |
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| 66 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_chl ! structure of input Chl (file informations, fields read) |
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| 67 | |
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| 68 | !! * Substitutions |
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| 69 | # include "vectopt_loop_substitute.h90" |
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| 70 | !!---------------------------------------------------------------------- |
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| 71 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 72 | !! $Id$ |
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| 73 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 74 | !!---------------------------------------------------------------------- |
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| 75 | CONTAINS |
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| 76 | |
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| 77 | SUBROUTINE tra_qsr( kt, ktlev, kt2lev, pts_rhs ) |
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| 78 | !!---------------------------------------------------------------------- |
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| 79 | !! *** ROUTINE tra_qsr *** |
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| 80 | !! |
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| 81 | !! ** Purpose : Compute the temperature trend due to the solar radiation |
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| 82 | !! penetration and add it to the general temperature trend. |
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| 83 | !! |
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| 84 | !! ** Method : The profile of the solar radiation within the ocean is defined |
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| 85 | !! through 2 wavebands (rn_si0,rn_si1) or 3 wavebands (RGB) and a ratio rn_abs |
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| 86 | !! Considering the 2 wavebands case: |
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| 87 | !! I(k) = Qsr*( rn_abs*EXP(z(k)/rn_si0) + (1.-rn_abs)*EXP(z(k)/rn_si1) ) |
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| 88 | !! The temperature trend associated with the solar radiation penetration |
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| 89 | !! is given by : zta = 1/e3t dk[ I ] / (rau0*Cp) |
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| 90 | !! At the bottom, boudary condition for the radiation is no flux : |
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| 91 | !! all heat which has not been absorbed in the above levels is put |
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| 92 | !! in the last ocean level. |
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| 93 | !! The computation is only done down to the level where |
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| 94 | !! I(k) < 1.e-15 W/m2 (i.e. over the top nksr levels) . |
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| 95 | !! |
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| 96 | !! ** Action : - update ta with the penetrative solar radiation trend |
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| 97 | !! - send trend for further diagnostics (l_trdtra=T) |
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| 98 | !! |
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| 99 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
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| 100 | !! Lengaigne et al. 2007, Clim. Dyn., V28, 5, 503-516. |
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| 101 | !! Morel, A. et Berthon, JF, 1989, Limnol Oceanogr 34(8), 1545-1562 |
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| 102 | !!---------------------------------------------------------------------- |
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| 103 | INTEGER, INTENT(in) :: kt ! ocean time-step |
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| 104 | INTEGER, INTENT(in) :: ktlev ! time level index for 3-time-level source terms |
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| 105 | INTEGER, INTENT(in) :: kt2lev ! time level index for 2-time-level source terms |
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| 106 | REAL(wp), INTENT( inout), DIMENSION(jpi,jpj,jpk,jpts) :: pts_rhs ! temperature and salinity trends |
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| 107 | ! |
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| 108 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 109 | INTEGER :: irgb ! local integers |
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| 110 | REAL(wp) :: zchl, zcoef, z1_2 ! local scalars |
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| 111 | REAL(wp) :: zc0 , zc1 , zc2 , zc3 ! - - |
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| 112 | REAL(wp) :: zzc0, zzc1, zzc2, zzc3 ! - - |
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| 113 | REAL(wp) :: zz0 , zz1 ! - - |
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| 114 | REAL(wp) :: zCb, zCmax, zze, zpsi, zpsimax, zdelpsi, zCtot, zCze |
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| 115 | REAL(wp) :: zlogc, zlogc2, zlogc3 |
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| 116 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: zekb, zekg, zekr |
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| 117 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ze0, ze1, ze2, ze3, zea, ztrdt |
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| 118 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: zetot, zchl3d |
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| 119 | !!---------------------------------------------------------------------- |
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| 120 | ! |
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| 121 | IF( ln_timing ) CALL timing_start('tra_qsr') |
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| 122 | ! |
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| 123 | IF( kt == nit000 ) THEN |
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| 124 | IF(lwp) WRITE(numout,*) |
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| 125 | IF(lwp) WRITE(numout,*) 'tra_qsr : penetration of the surface solar radiation' |
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| 126 | IF(lwp) WRITE(numout,*) '~~~~~~~' |
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| 127 | ENDIF |
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| 128 | ! |
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| 129 | IF( l_trdtra ) THEN ! trends diagnostic: save the input temperature trend |
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| 130 | ALLOCATE( ztrdt(jpi,jpj,jpk) ) |
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| 131 | ztrdt(:,:,:) = pts_rhs(:,:,:,jp_tem) |
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| 132 | ENDIF |
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| 133 | ! |
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| 134 | ! !-----------------------------------! |
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| 135 | ! ! before qsr induced heat content ! |
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| 136 | ! !-----------------------------------! |
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| 137 | IF( kt == nit000 ) THEN !== 1st time step ==! |
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| 138 | !!gm case neuler not taken into account.... |
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| 139 | IF( ln_rstart .AND. iom_varid( numror, 'qsr_hc_b', ldstop = .FALSE. ) > 0 ) THEN ! read in restart |
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| 140 | IF(lwp) WRITE(numout,*) ' nit000-1 qsr tracer content forcing field read in the restart file' |
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| 141 | z1_2 = 0.5_wp |
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| 142 | CALL iom_get( numror, jpdom_autoglo, 'qsr_hc_b', qsr_hc_b, ldxios = lrxios ) ! before heat content trend due to Qsr flux |
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| 143 | ELSE ! No restart or restart not found: Euler forward time stepping |
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| 144 | z1_2 = 1._wp |
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| 145 | qsr_hc_b(:,:,:) = 0._wp |
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| 146 | ENDIF |
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| 147 | ELSE !== Swap of qsr heat content ==! |
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| 148 | z1_2 = 0.5_wp |
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| 149 | qsr_hc_b(:,:,:) = qsr_hc(:,:,:) |
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| 150 | ENDIF |
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| 151 | ! |
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| 152 | ! !--------------------------------! |
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| 153 | SELECT CASE( nqsr ) ! now qsr induced heat content ! |
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| 154 | ! !--------------------------------! |
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| 155 | ! |
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| 156 | CASE( np_BIO ) !== bio-model fluxes ==! |
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| 157 | ! |
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| 158 | DO jk = 1, nksr |
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| 159 | qsr_hc(:,:,jk) = r1_rau0_rcp * ( etot3(:,:,jk) - etot3(:,:,jk+1) ) |
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| 160 | END DO |
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| 161 | ! |
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| 162 | CASE( np_RGB , np_RGBc ) !== R-G-B fluxes ==! |
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| 163 | ! |
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| 164 | ALLOCATE( zekb(jpi,jpj) , zekg(jpi,jpj) , zekr (jpi,jpj) , & |
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| 165 | & ze0 (jpi,jpj,jpk) , ze1 (jpi,jpj,jpk) , ze2 (jpi,jpj,jpk) , & |
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| 166 | & ze3 (jpi,jpj,jpk) , zea (jpi,jpj,jpk) , zchl3d(jpi,jpj,jpk) ) |
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| 167 | ! |
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| 168 | IF( nqsr == np_RGBc ) THEN !* Variable Chlorophyll |
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| 169 | CALL fld_read( kt, 1, sf_chl ) ! Read Chl data and provides it at the current time step |
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| 170 | DO jk = 1, nksr + 1 |
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| 171 | DO jj = 2, jpjm1 ! Separation in R-G-B depending of the surface Chl |
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| 172 | DO ji = fs_2, fs_jpim1 |
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| 173 | zchl = sf_chl(1)%fnow(ji,jj,1) |
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| 174 | zCtot = 40.6 * zchl**0.459 |
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| 175 | zze = 568.2 * zCtot**(-0.746) |
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| 176 | IF( zze > 102. ) zze = 200.0 * zCtot**(-0.293) |
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| 177 | zpsi = gdepw(ji,jj,jk,kt2lev) / zze |
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| 178 | ! |
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| 179 | zlogc = LOG( zchl ) |
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| 180 | zlogc2 = zlogc * zlogc |
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| 181 | zlogc3 = zlogc * zlogc * zlogc |
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| 182 | zCb = 0.768 + 0.087 * zlogc - 0.179 * zlogc2 - 0.025 * zlogc3 |
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| 183 | zCmax = 0.299 - 0.289 * zlogc + 0.579 * zlogc2 |
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| 184 | zpsimax = 0.6 - 0.640 * zlogc + 0.021 * zlogc2 + 0.115 * zlogc3 |
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| 185 | zdelpsi = 0.710 + 0.159 * zlogc + 0.021 * zlogc2 |
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| 186 | zCze = 1.12 * (zchl)**0.803 |
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| 187 | ! |
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| 188 | zchl3d(ji,jj,jk) = zCze * ( zCb + zCmax * EXP( -( (zpsi - zpsimax) / zdelpsi )**2 ) ) |
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| 189 | END DO |
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| 190 | ! |
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| 191 | END DO |
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| 192 | END DO |
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| 193 | ELSE !* constant chrlorophyll |
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| 194 | DO jk = 1, nksr + 1 |
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| 195 | zchl3d(:,:,jk) = 0.05 |
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| 196 | ENDDO |
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| 197 | ENDIF |
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| 198 | ! |
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| 199 | zcoef = ( 1. - rn_abs ) / 3._wp !* surface equi-partition in R-G-B |
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| 200 | DO jj = 2, jpjm1 |
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| 201 | DO ji = fs_2, fs_jpim1 |
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| 202 | ze0(ji,jj,1) = rn_abs * qsr(ji,jj) |
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| 203 | ze1(ji,jj,1) = zcoef * qsr(ji,jj) |
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| 204 | ze2(ji,jj,1) = zcoef * qsr(ji,jj) |
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| 205 | ze3(ji,jj,1) = zcoef * qsr(ji,jj) |
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| 206 | zea(ji,jj,1) = qsr(ji,jj) |
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| 207 | END DO |
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| 208 | END DO |
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| 209 | ! |
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| 210 | DO jk = 2, nksr+1 !* interior equi-partition in R-G-B depending of vertical profile of Chl |
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| 211 | DO jj = 2, jpjm1 |
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| 212 | DO ji = fs_2, fs_jpim1 |
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| 213 | zchl = MIN( 10. , MAX( 0.03, zchl3d(ji,jj,jk) ) ) |
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| 214 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
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| 215 | zekb(ji,jj) = rkrgb(1,irgb) |
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| 216 | zekg(ji,jj) = rkrgb(2,irgb) |
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| 217 | zekr(ji,jj) = rkrgb(3,irgb) |
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| 218 | END DO |
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| 219 | END DO |
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| 220 | |
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| 221 | DO jj = 2, jpjm1 |
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| 222 | DO ji = fs_2, fs_jpim1 |
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| 223 | zc0 = ze0(ji,jj,jk-1) * EXP( - e3t(ji,jj,jk-1,ktlev) * xsi0r ) |
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| 224 | zc1 = ze1(ji,jj,jk-1) * EXP( - e3t(ji,jj,jk-1,ktlev) * zekb(ji,jj) ) |
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| 225 | zc2 = ze2(ji,jj,jk-1) * EXP( - e3t(ji,jj,jk-1,ktlev) * zekg(ji,jj) ) |
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| 226 | zc3 = ze3(ji,jj,jk-1) * EXP( - e3t(ji,jj,jk-1,ktlev) * zekr(ji,jj) ) |
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| 227 | ze0(ji,jj,jk) = zc0 |
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| 228 | ze1(ji,jj,jk) = zc1 |
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| 229 | ze2(ji,jj,jk) = zc2 |
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| 230 | ze3(ji,jj,jk) = zc3 |
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| 231 | zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * wmask(ji,jj,jk) |
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| 232 | END DO |
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| 233 | END DO |
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| 234 | END DO |
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| 235 | ! |
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| 236 | DO jk = 1, nksr !* now qsr induced heat content |
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| 237 | DO jj = 2, jpjm1 |
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| 238 | DO ji = fs_2, fs_jpim1 |
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| 239 | qsr_hc(ji,jj,jk) = r1_rau0_rcp * ( zea(ji,jj,jk) - zea(ji,jj,jk+1) ) |
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| 240 | END DO |
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| 241 | END DO |
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| 242 | END DO |
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| 243 | ! |
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| 244 | DEALLOCATE( zekb , zekg , zekr , ze0 , ze1 , ze2 , ze3 , zea , zchl3d ) |
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| 245 | ! |
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| 246 | CASE( np_2BD ) !== 2-bands fluxes ==! |
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| 247 | ! |
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| 248 | zz0 = rn_abs * r1_rau0_rcp ! surface equi-partition in 2-bands |
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| 249 | zz1 = ( 1. - rn_abs ) * r1_rau0_rcp |
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| 250 | DO jk = 1, nksr ! solar heat absorbed at T-point in the top 400m |
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| 251 | DO jj = 2, jpjm1 |
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| 252 | DO ji = fs_2, fs_jpim1 |
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| 253 | zc0 = zz0 * EXP( -gdepw(ji,jj,jk ,kt2lev)*xsi0r ) + zz1 * EXP( -gdepw(ji,jj,jk ,kt2lev)*xsi1r ) |
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| 254 | zc1 = zz0 * EXP( -gdepw(ji,jj,jk+1,kt2lev)*xsi0r ) + zz1 * EXP( -gdepw(ji,jj,jk+1,kt2lev)*xsi1r ) |
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| 255 | qsr_hc(ji,jj,jk) = qsr(ji,jj) * ( zc0 * wmask(ji,jj,jk) - zc1 * wmask(ji,jj,jk+1) ) |
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| 256 | END DO |
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| 257 | END DO |
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| 258 | END DO |
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| 259 | ! |
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| 260 | END SELECT |
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| 261 | ! |
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| 262 | ! !-----------------------------! |
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| 263 | DO jk = 1, nksr ! update to the temp. trend ! |
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| 264 | DO jj = 2, jpjm1 !-----------------------------! |
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| 265 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 266 | pts_rhs(ji,jj,jk,jp_tem) = pts_rhs(ji,jj,jk,jp_tem) & |
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| 267 | & + z1_2 * ( qsr_hc_b(ji,jj,jk) + qsr_hc(ji,jj,jk) ) / e3t(ji,jj,jk,ktlev) |
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| 268 | END DO |
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| 269 | END DO |
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| 270 | END DO |
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| 271 | ! |
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| 272 | ! sea-ice: store the 1st ocean level attenuation coefficient |
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| 273 | DO jj = 2, jpjm1 |
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| 274 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 275 | IF( qsr(ji,jj) /= 0._wp ) THEN ; fraqsr_1lev(ji,jj) = qsr_hc(ji,jj,1) / ( r1_rau0_rcp * qsr(ji,jj) ) |
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| 276 | ELSE ; fraqsr_1lev(ji,jj) = 1._wp |
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| 277 | ENDIF |
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| 278 | END DO |
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| 279 | END DO |
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| 280 | CALL lbc_lnk( 'traqsr', fraqsr_1lev(:,:), 'T', 1._wp ) |
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| 281 | ! |
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| 282 | IF( iom_use('qsr3d') ) THEN ! output the shortwave Radiation distribution |
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| 283 | ALLOCATE( zetot(jpi,jpj,jpk) ) |
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| 284 | zetot(:,:,nksr+1:jpk) = 0._wp ! below ~400m set to zero |
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| 285 | DO jk = nksr, 1, -1 |
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| 286 | zetot(:,:,jk) = zetot(:,:,jk+1) + qsr_hc(:,:,jk) * rau0_rcp |
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| 287 | END DO |
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| 288 | CALL iom_put( 'qsr3d', zetot ) ! 3D distribution of shortwave Radiation |
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| 289 | DEALLOCATE( zetot ) |
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| 290 | ENDIF |
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| 291 | ! |
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| 292 | IF( lrst_oce ) THEN ! write in the ocean restart file |
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| 293 | IF( lwxios ) CALL iom_swap( cwxios_context ) |
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| 294 | CALL iom_rstput( kt, nitrst, numrow, 'qsr_hc_b' , qsr_hc , ldxios = lwxios ) |
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| 295 | CALL iom_rstput( kt, nitrst, numrow, 'fraqsr_1lev', fraqsr_1lev, ldxios = lwxios ) |
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| 296 | IF( lwxios ) CALL iom_swap( cxios_context ) |
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| 297 | ENDIF |
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| 298 | ! |
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| 299 | IF( l_trdtra ) THEN ! qsr tracers trends saved for diagnostics |
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| 300 | ztrdt(:,:,:) = pts_rhs(:,:,:,jp_tem) - ztrdt(:,:,:) |
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| 301 | CALL trd_tra( kt, 'TRA', jp_tem, jptra_qsr, ztrdt ) |
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| 302 | DEALLOCATE( ztrdt ) |
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| 303 | ENDIF |
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| 304 | ! ! print mean trends (used for debugging) |
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| 305 | IF(ln_ctl) CALL prt_ctl( tab3d_1=tsa(:,:,:,jp_tem), clinfo1=' qsr - Ta: ', mask1=tmask, clinfo3='tra-ta' ) |
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| 306 | ! |
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| 307 | IF( ln_timing ) CALL timing_stop('tra_qsr') |
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| 308 | ! |
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| 309 | END SUBROUTINE tra_qsr |
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| 310 | |
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| 311 | |
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| 312 | SUBROUTINE tra_qsr_init |
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| 313 | !!---------------------------------------------------------------------- |
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| 314 | !! *** ROUTINE tra_qsr_init *** |
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| 315 | !! |
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| 316 | !! ** Purpose : Initialization for the penetrative solar radiation |
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| 317 | !! |
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| 318 | !! ** Method : The profile of solar radiation within the ocean is set |
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| 319 | !! from two length scale of penetration (rn_si0,rn_si1) and a ratio |
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| 320 | !! (rn_abs). These parameters are read in the namtra_qsr namelist. The |
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| 321 | !! default values correspond to clear water (type I in Jerlov' |
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| 322 | !! (1968) classification. |
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| 323 | !! called by tra_qsr at the first timestep (nit000) |
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| 324 | !! |
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| 325 | !! ** Action : - initialize rn_si0, rn_si1 and rn_abs |
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| 326 | !! |
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| 327 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
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| 328 | !!---------------------------------------------------------------------- |
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| 329 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 330 | INTEGER :: ios, irgb, ierror, ioptio ! local integer |
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| 331 | REAL(wp) :: zz0, zc0 , zc1, zcoef ! local scalars |
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| 332 | REAL(wp) :: zz1, zc2 , zc3, zchl ! - - |
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| 333 | ! |
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| 334 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files |
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| 335 | TYPE(FLD_N) :: sn_chl ! informations about the chlorofyl field to be read |
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| 336 | !! |
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| 337 | NAMELIST/namtra_qsr/ sn_chl, cn_dir, ln_qsr_rgb, ln_qsr_2bd, ln_qsr_bio, & |
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| 338 | & nn_chldta, rn_abs, rn_si0, rn_si1 |
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| 339 | !!---------------------------------------------------------------------- |
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| 340 | ! |
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| 341 | REWIND( numnam_ref ) ! Namelist namtra_qsr in reference namelist |
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| 342 | READ ( numnam_ref, namtra_qsr, IOSTAT = ios, ERR = 901) |
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| 343 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_qsr in reference namelist', lwp ) |
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| 344 | ! |
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| 345 | REWIND( numnam_cfg ) ! Namelist namtra_qsr in configuration namelist |
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| 346 | READ ( numnam_cfg, namtra_qsr, IOSTAT = ios, ERR = 902 ) |
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| 347 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namtra_qsr in configuration namelist', lwp ) |
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| 348 | IF(lwm) WRITE ( numond, namtra_qsr ) |
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| 349 | ! |
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| 350 | IF(lwp) THEN ! control print |
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| 351 | WRITE(numout,*) |
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| 352 | WRITE(numout,*) 'tra_qsr_init : penetration of the surface solar radiation' |
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| 353 | WRITE(numout,*) '~~~~~~~~~~~~' |
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| 354 | WRITE(numout,*) ' Namelist namtra_qsr : set the parameter of penetration' |
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| 355 | WRITE(numout,*) ' RGB (Red-Green-Blue) light penetration ln_qsr_rgb = ', ln_qsr_rgb |
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| 356 | WRITE(numout,*) ' 2 band light penetration ln_qsr_2bd = ', ln_qsr_2bd |
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| 357 | WRITE(numout,*) ' bio-model light penetration ln_qsr_bio = ', ln_qsr_bio |
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| 358 | WRITE(numout,*) ' RGB : Chl data (=1) or cst value (=0) nn_chldta = ', nn_chldta |
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| 359 | WRITE(numout,*) ' RGB & 2 bands: fraction of light (rn_si1) rn_abs = ', rn_abs |
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| 360 | WRITE(numout,*) ' RGB & 2 bands: shortess depth of extinction rn_si0 = ', rn_si0 |
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| 361 | WRITE(numout,*) ' 2 bands: longest depth of extinction rn_si1 = ', rn_si1 |
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| 362 | WRITE(numout,*) |
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| 363 | ENDIF |
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| 364 | ! |
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| 365 | ioptio = 0 ! Parameter control |
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| 366 | IF( ln_qsr_rgb ) ioptio = ioptio + 1 |
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| 367 | IF( ln_qsr_2bd ) ioptio = ioptio + 1 |
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| 368 | IF( ln_qsr_bio ) ioptio = ioptio + 1 |
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| 369 | ! |
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| 370 | IF( ioptio /= 1 ) CALL ctl_stop( 'Choose ONE type of light penetration in namelist namtra_qsr', & |
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| 371 | & ' 2 bands, 3 RGB bands or bio-model light penetration' ) |
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| 372 | ! |
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| 373 | IF( ln_qsr_rgb .AND. nn_chldta == 0 ) nqsr = np_RGB |
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| 374 | IF( ln_qsr_rgb .AND. nn_chldta == 1 ) nqsr = np_RGBc |
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| 375 | IF( ln_qsr_2bd ) nqsr = np_2BD |
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| 376 | IF( ln_qsr_bio ) nqsr = np_BIO |
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| 377 | ! |
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| 378 | ! ! Initialisation |
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| 379 | xsi0r = 1._wp / rn_si0 |
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| 380 | xsi1r = 1._wp / rn_si1 |
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| 381 | ! |
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| 382 | SELECT CASE( nqsr ) |
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| 383 | ! |
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| 384 | CASE( np_RGB , np_RGBc ) !== Red-Green-Blue light penetration ==! |
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| 385 | ! |
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| 386 | IF(lwp) WRITE(numout,*) ' ==>>> R-G-B light penetration ' |
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| 387 | ! |
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| 388 | CALL trc_oce_rgb( rkrgb ) ! tabulated attenuation coef. |
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| 389 | ! |
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| 390 | nksr = trc_oce_ext_lev( r_si2, 33._wp ) ! level of light extinction |
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| 391 | ! |
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| 392 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_1d(nksr+1), ' m' |
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| 393 | ! |
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| 394 | IF( nqsr == np_RGBc ) THEN ! Chl data : set sf_chl structure |
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| 395 | IF(lwp) WRITE(numout,*) ' ==>>> Chlorophyll read in a file' |
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| 396 | ALLOCATE( sf_chl(1), STAT=ierror ) |
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| 397 | IF( ierror > 0 ) THEN |
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| 398 | CALL ctl_stop( 'tra_qsr_init: unable to allocate sf_chl structure' ) ; RETURN |
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| 399 | ENDIF |
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| 400 | ALLOCATE( sf_chl(1)%fnow(jpi,jpj,1) ) |
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| 401 | IF( sn_chl%ln_tint ) ALLOCATE( sf_chl(1)%fdta(jpi,jpj,1,2) ) |
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| 402 | ! ! fill sf_chl with sn_chl and control print |
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| 403 | CALL fld_fill( sf_chl, (/ sn_chl /), cn_dir, 'tra_qsr_init', & |
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| 404 | & 'Solar penetration function of read chlorophyll', 'namtra_qsr' , no_print ) |
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| 405 | ENDIF |
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| 406 | IF( nqsr == np_RGB ) THEN ! constant Chl |
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| 407 | IF(lwp) WRITE(numout,*) ' ==>>> Constant Chlorophyll concentration = 0.05' |
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| 408 | ENDIF |
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| 409 | ! |
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| 410 | CASE( np_2BD ) !== 2 bands light penetration ==! |
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| 411 | ! |
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| 412 | IF(lwp) WRITE(numout,*) ' ==>>> 2 bands light penetration' |
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| 413 | ! |
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| 414 | nksr = trc_oce_ext_lev( rn_si1, 100._wp ) ! level of light extinction |
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| 415 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_1d(nksr+1), ' m' |
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| 416 | ! |
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| 417 | CASE( np_BIO ) !== BIO light penetration ==! |
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| 418 | ! |
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| 419 | IF(lwp) WRITE(numout,*) ' ==>>> bio-model light penetration' |
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| 420 | IF( .NOT.lk_top ) CALL ctl_stop( 'No bio model : ln_qsr_bio = true impossible ' ) |
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| 421 | ! |
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| 422 | END SELECT |
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| 423 | ! |
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| 424 | qsr_hc(:,:,:) = 0._wp ! now qsr heat content set to zero where it will not be computed |
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| 425 | ! |
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| 426 | ! 1st ocean level attenuation coefficient (used in sbcssm) |
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| 427 | IF( iom_varid( numror, 'fraqsr_1lev', ldstop = .FALSE. ) > 0 ) THEN |
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| 428 | CALL iom_get( numror, jpdom_autoglo, 'fraqsr_1lev' , fraqsr_1lev, ldxios = lrxios ) |
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| 429 | ELSE |
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| 430 | fraqsr_1lev(:,:) = 1._wp ! default : no penetration |
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| 431 | ENDIF |
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| 432 | ! |
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| 433 | IF( lwxios ) THEN |
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| 434 | CALL iom_set_rstw_var_active('qsr_hc_b') |
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| 435 | CALL iom_set_rstw_var_active('fraqsr_1lev') |
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| 436 | ENDIF |
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| 437 | ! |
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| 438 | END SUBROUTINE tra_qsr_init |
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| 439 | |
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| 440 | !!====================================================================== |
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| 441 | END MODULE traqsr |
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