MODULE traqsr !!====================================================================== !! *** MODULE traqsr *** !! Ocean physics: solar radiation penetration in the top ocean levels !!====================================================================== !! History : OPA ! 1990-10 (B. Blanke) Original code !! 7.0 ! 1991-11 (G. Madec) !! ! 1996-01 (G. Madec) s-coordinates !! NEMO 1.0 ! 2002-06 (G. Madec) F90: Free form and module !! - ! 2005-11 (G. Madec) zco, zps, sco coordinate !! 3.2 ! 2009-04 (G. Madec & NEMO team) !! 3.4 ! 2012-05 (C. Rousset) store attenuation coef for use in ice model !! 3.6 ! 2015-12 (O. Aumont, J. Jouanno, C. Ethe) use vertical profile of chlorophyll !!---------------------------------------------------------------------- !!---------------------------------------------------------------------- !! tra_qsr : trend due to the solar radiation penetration !! tra_qsr_init : solar radiation penetration initialization !!---------------------------------------------------------------------- USE oce ! ocean dynamics and active tracers USE dom_oce ! ocean space and time domain USE sbc_oce ! surface boundary condition: ocean USE trc_oce ! share SMS/Ocean variables USE trd_oce ! trends: ocean variables USE trdtra ! trends manager: tracers USE in_out_manager ! I/O manager USE phycst ! physical constants USE prtctl ! Print control USE iom ! I/O manager USE fldread ! read input fields USE restart ! ocean restart USE lib_mpp ! MPP library USE wrk_nemo ! Memory Allocation USE timing ! Timing USE stopack IMPLICIT NONE PRIVATE PUBLIC tra_qsr ! routine called by step.F90 (ln_traqsr=T) PUBLIC tra_qsr_init ! routine called by nemogcm.F90 ! !!* Namelist namtra_qsr: penetrative solar radiation LOGICAL , PUBLIC :: ln_traqsr !: light absorption (qsr) flag LOGICAL , PUBLIC :: ln_qsr_rgb !: Red-Green-Blue light absorption flag LOGICAL , PUBLIC :: ln_qsr_2bd !: 2 band light absorption flag LOGICAL , PUBLIC :: ln_qsr_bio !: bio-model light absorption flag LOGICAL , PUBLIC :: ln_qsr_ice !: light penetration for ice-model LIM3 (clem) INTEGER , PUBLIC :: nn_chldta !: use Chlorophyll data (=1) or not (=0) REAL(wp), PUBLIC :: rn_abs !: fraction absorbed in the very near surface (RGB & 2 bands) REAL(wp), PUBLIC :: rn_si0 !: very near surface depth of extinction (RGB & 2 bands) REAL(wp), PUBLIC :: rn_si1 !: deepest depth of extinction (water type I) (2 bands) ! Module variables REAL(wp), ALLOCATABLE :: xsi0r(:,:) !: inverse of rn_si0 REAL(wp) :: xsi1r !: inverse of rn_si1 TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_chl ! structure of input Chl (file informations, fields read) INTEGER, PUBLIC :: nksr ! levels below which the light cannot penetrate ( depth larger than 391 m) REAL(wp), DIMENSION(3,61) :: rkrgb !: tabulated attenuation coefficients for RGB absorption !! * Substitutions # include "domzgr_substitute.h90" # include "vectopt_loop_substitute.h90" !!---------------------------------------------------------------------- !! NEMO/OPA 3.3 , NEMO Consortium (2010) !! $Id$ !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE tra_qsr( kt ) !!---------------------------------------------------------------------- !! *** ROUTINE tra_qsr *** !! !! ** Purpose : Compute the temperature trend due to the solar radiation !! penetration and add it to the general temperature trend. !! !! ** Method : The profile of the solar radiation within the ocean is defined !! through 2 wavebands (rn_si0,rn_si1) or 3 wavebands (RGB) and a ratio rn_abs !! Considering the 2 wavebands case: !! I(k) = Qsr*( rn_abs*EXP(z(k)/rn_si0) + (1.-rn_abs)*EXP(z(k)/rn_si1) ) !! The temperature trend associated with the solar radiation penetration !! is given by : zta = 1/e3t dk[ I ] / (rau0*Cp) !! At the bottom, boudary condition for the radiation is no flux : !! all heat which has not been absorbed in the above levels is put !! in the last ocean level. !! In z-coordinate case, the computation is only done down to the !! level where I(k) < 1.e-15 W/m2. In addition, the coefficients !! used for the computation are calculated one for once as they !! depends on k only. !! !! ** Action : - update ta with the penetrative solar radiation trend !! - save the trend in ttrd ('key_trdtra') !! !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. !! Lengaigne et al. 2007, Clim. Dyn., V28, 5, 503-516. !! Morel, A. et Berthon, JF, 1989, Limnol Oceanogr 34(8), 1545-1562 !!---------------------------------------------------------------------- ! INTEGER, INTENT(in) :: kt ! ocean time-step ! INTEGER :: ji, jj, jk ! dummy loop indices INTEGER :: irgb ! local integers REAL(wp) :: zchl, zcoef, zfact ! local scalars REAL(wp) :: zc0, zc1, zc2, zc3 ! - - REAL(wp) :: zz0, zz1, z1_e3t ! - - REAL(wp) :: zCb, zCmax, zze, zpsi, zpsimax, zdelpsi, zCtot, zCze REAL(wp) :: zlogc, zlogc2, zlogc3 REAL(wp), POINTER, DIMENSION(:,: ) :: zekb, zekg, zekr REAL(wp), POINTER, DIMENSION(:,:,:) :: ze0, ze1, ze2, ze3, zea, ztrdt, zchl3d !!-------------------------------------------------------------------------- ! IF( nn_timing == 1 ) CALL timing_start('tra_qsr') ! CALL wrk_alloc( jpi, jpj, zekb, zekg, zekr ) CALL wrk_alloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea, zchl3d ) ! IF( kt == nit000 ) THEN IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) 'tra_qsr : penetration of the surface solar radiation' IF(lwp) WRITE(numout,*) '~~~~~~~' IF( .NOT.ln_traqsr ) RETURN ENDIF IF( l_trdtra ) THEN ! Save ta and sa trends CALL wrk_alloc( jpi, jpj, jpk, ztrdt ) ztrdt(:,:,:) = tsa(:,:,:,jp_tem) ENDIF ! Set before qsr tracer content field ! *********************************** IF( kt == nit000 ) THEN ! Set the forcing field at nit000 - 1 ! ! ----------------------------------- qsr_hc(:,:,:) = 0.e0 ! IF( ln_rstart .AND. & ! Restart: read in restart file & iom_varid( numror, 'qsr_hc_b', ldstop = .FALSE. ) > 0 ) THEN IF(lwp) WRITE(numout,*) ' nit000-1 qsr tracer content forcing field red in the restart file' zfact = 0.5e0 CALL iom_get( numror, jpdom_autoglo, 'qsr_hc_b', qsr_hc_b ) ! before heat content trend due to Qsr flux ELSE ! No restart or restart not found: Euler forward time stepping zfact = 1.e0 qsr_hc_b(:,:,:) = 0.e0 ENDIF ELSE ! Swap of forcing field ! ! --------------------- zfact = 0.5e0 qsr_hc_b(:,:,:) = qsr_hc(:,:,:) ENDIF ! Compute now qsr tracer content field ! ************************************ ! ! ============================================== ! IF( lk_qsr_bio .AND. ln_qsr_bio ) THEN ! bio-model fluxes : all vertical coordinates ! ! ! ============================================== ! DO jk = 1, jpkm1 qsr_hc(:,:,jk) = r1_rau0_rcp * ( etot3(:,:,jk) - etot3(:,:,jk+1) ) END DO ! Add to the general trend DO jk = 1, jpkm1 DO jj = 2, jpjm1 DO ji = fs_2, fs_jpim1 ! vector opt. z1_e3t = zfact / fse3t(ji,jj,jk) 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 END DO END DO END DO CALL iom_put( 'qsr3d', etot3 ) ! Shortwave Radiation 3D distribution ! clem: store attenuation coefficient of the first ocean level IF ( ln_qsr_ice ) THEN DO jj = 1, jpj DO ji = 1, jpi IF ( qsr(ji,jj) /= 0._wp ) THEN fraqsr_1lev(ji,jj) = ( qsr_hc(ji,jj,1) / ( r1_rau0_rcp * qsr(ji,jj) ) ) ELSE fraqsr_1lev(ji,jj) = 1. ENDIF END DO END DO ENDIF ! ! ============================================== ! ELSE ! Ocean alone : ! ! ============================================== ! ! ! #if defined key_traldf_c2d || key_traldf_c3d IF( ln_stopack .AND. ( nn_spp_qsi0 > 0 ) ) THEN xsi0r = rn_si0 CALL spp_gen(kt, xsi0r, nn_spp_qsi0, rn_qsi0_sd, jk_spp_qsi0 ) xsi0r = 1.e0 / xsi0r ENDIF #else IF ( ln_stopack .AND. nn_spp_qsi0 > 0 ) & & CALL ctl_stop( 'tra_qsr: parameter perturbation will only work with '// & 'key_traldf_c2d or key_traldf_c3d') #endif ! ! ------------------------- ! IF( ln_qsr_rgb) THEN ! R-G-B light penetration ! ! ! ------------------------- ! ! Set chlorophyl concentration IF( nn_chldta == 1 .OR. nn_chldta == 2 .OR. lk_vvl ) THEN !* Variable Chlorophyll or ocean volume ! IF( nn_chldta == 1 ) THEN !* 2D Variable Chlorophyll ! CALL fld_read( kt, 1, sf_chl ) ! Read Chl data and provides it at the current time step DO jk = 1, nksr + 1 zchl3d(:,:,jk) = sf_chl(1)%fnow(:,:,1) ENDDO ! ELSE IF( nn_chldta == 2 ) THEN !* -3-D Variable Chlorophyll ! CALL fld_read( kt, 1, sf_chl ) ! Read Chl data and provides it at the current time step !CDIR NOVERRCHK ! DO jj = 1, jpj !CDIR NOVERRCHK DO ji = 1, jpi zchl = sf_chl(1)%fnow(ji,jj,1) zCtot = 40.6 * zchl**0.459 zze = 568.2 * zCtot**(-0.746) IF( zze > 102. ) zze = 200.0 * zCtot**(-0.293) zlogc = LOG( zchl ) zlogc2 = zlogc * zlogc zlogc3 = zlogc * zlogc * zlogc zCb = 0.768 + 0.087 * zlogc - 0.179 * zlogc2 - 0.025 * zlogc3 zCmax = 0.299 - 0.289 * zlogc + 0.579 * zlogc2 zpsimax = 0.6 - 0.640 * zlogc + 0.021 * zlogc2 + 0.115 * zlogc3 zdelpsi = 0.710 + 0.159 * zlogc + 0.021 * zlogc2 zCze = 1.12 * (zchl)**0.803 DO jk = 1, nksr + 1 zpsi = fsdept(ji,jj,jk) / zze zchl3d(ji,jj,jk) = zCze * ( zCb + zCmax * EXP( -( (zpsi - zpsimax) / zdelpsi )**2 ) ) END DO ! END DO END DO ! ELSE !* Variable ocean volume but constant chrlorophyll DO jk = 1, nksr + 1 zchl3d(:,:,jk) = 0.05 ENDDO ENDIF ! zcoef = ( 1. - rn_abs ) / 3.e0 ! equi-partition in R-G-B ze0(:,:,1) = rn_abs * qsr(:,:) ze1(:,:,1) = zcoef * qsr(:,:) ze2(:,:,1) = zcoef * qsr(:,:) ze3(:,:,1) = zcoef * qsr(:,:) zea(:,:,1) = qsr(:,:) ! DO jk = 2, nksr+1 ! DO jj = 1, jpj ! Separation in R-G-B depending of vertical profile of Chl !CDIR NOVERRCHK DO ji = 1, jpi zchl = MIN( 10. , MAX( 0.03, zchl3d(ji,jj,jk) ) ) irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) zekb(ji,jj) = rkrgb(1,irgb) zekg(ji,jj) = rkrgb(2,irgb) zekr(ji,jj) = rkrgb(3,irgb) END DO END DO !CDIR NOVERRCHK DO jj = 1, jpj !CDIR NOVERRCHK DO ji = 1, jpi zc0 = ze0(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * xsi0r(ji,jj) ) zc1 = ze1(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekb(ji,jj) ) zc2 = ze2(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekg(ji,jj) ) zc3 = ze3(ji,jj,jk-1) * EXP( - fse3t(ji,jj,jk-1) * zekr(ji,jj) ) ze0(ji,jj,jk) = zc0 ze1(ji,jj,jk) = zc1 ze2(ji,jj,jk) = zc2 ze3(ji,jj,jk) = zc3 zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) END DO END DO END DO ! DO jk = 1, nksr ! compute and add qsr trend to ta qsr_hc(:,:,jk) = r1_rau0_rcp * ( zea(:,:,jk) - zea(:,:,jk+1) ) END DO zea(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero CALL iom_put( 'qsr3d', zea ) ! Shortwave Radiation 3D distribution ! IF ( ln_qsr_ice ) THEN ! store attenuation coefficient of the first ocean level !CDIR NOVERRCHK DO jj = 1, jpj ! Separation in R-G-B depending of the surface Chl !CDIR NOVERRCHK DO ji = 1, jpi zchl = MIN( 10. , MAX( 0.03, zchl3d(ji,jj,1) ) ) irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) zekb(ji,jj) = rkrgb(1,irgb) zekg(ji,jj) = rkrgb(2,irgb) zekr(ji,jj) = rkrgb(3,irgb) END DO END DO ! DO jj = 1, jpj DO ji = 1, jpi zc0 = rn_abs * EXP( - fse3t(ji,jj,1) * xsi0r(ji,jj) ) zc1 = zcoef * EXP( - fse3t(ji,jj,1) * zekb(ji,jj) ) zc2 = zcoef * EXP( - fse3t(ji,jj,1) * zekg(ji,jj) ) zc3 = zcoef * EXP( - fse3t(ji,jj,1) * zekr(ji,jj) ) fraqsr_1lev(ji,jj) = 1.0 - ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,2) END DO END DO ! ENDIF ! ELSE !* Constant Chlorophyll DO jk = 1, nksr qsr_hc(:,:,jk) = etot3(:,:,jk) * qsr(:,:) END DO ! store attenuation coefficient of the first ocean level IF( ln_qsr_ice ) THEN fraqsr_1lev(:,:) = etot3(:,:,1) / r1_rau0_rcp ENDIF ENDIF ENDIF ! ! ------------------------- ! IF( ln_qsr_2bd ) THEN ! 2 band light penetration ! ! ! ------------------------- ! ! IF( lk_vvl .OR. ( ln_stopack .AND. ( nn_spp_qsi0 > 0 ) ) ) THEN !* variable volume zz0 = rn_abs * r1_rau0_rcp zz1 = ( 1. - rn_abs ) * r1_rau0_rcp DO jk = 1, nksr ! solar heat absorbed at T-point in the top 400m DO jj = 1, jpj DO ji = 1, jpi zc0 = zz0 * EXP( -fsdepw(ji,jj,jk )*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,jk )*xsi1r ) zc1 = zz0 * EXP( -fsdepw(ji,jj,jk+1)*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,jk+1)*xsi1r ) qsr_hc(ji,jj,jk) = qsr(ji,jj) * ( zc0*tmask(ji,jj,jk) - zc1*tmask(ji,jj,jk+1) ) END DO END DO END DO ! clem: store attenuation coefficient of the first ocean level IF ( ln_qsr_ice ) THEN DO jj = 1, jpj DO ji = 1, jpi zc0 = zz0 * EXP( -fsdepw(ji,jj,1)*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,1)*xsi1r ) zc1 = zz0 * EXP( -fsdepw(ji,jj,2)*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,2)*xsi1r ) fraqsr_1lev(ji,jj) = ( zc0*tmask(ji,jj,1) - zc1*tmask(ji,jj,2) ) / r1_rau0_rcp END DO END DO ENDIF ELSE !* constant volume: coef. computed one for all DO jk = 1, nksr DO jj = 2, jpjm1 DO ji = fs_2, fs_jpim1 ! vector opt. ! (ISF) no light penetration below the ice shelves qsr_hc(ji,jj,jk) = etot3(ji,jj,jk) * qsr(ji,jj) * tmask(ji,jj,1) END DO END DO END DO ! clem: store attenuation coefficient of the first ocean level IF ( ln_qsr_ice ) THEN fraqsr_1lev(:,:) = etot3(:,:,1) / r1_rau0_rcp ENDIF ! ENDIF ! ENDIF ! ! Add to the general trend DO jk = 1, nksr DO jj = 2, jpjm1 DO ji = fs_2, fs_jpim1 ! vector opt. z1_e3t = zfact / fse3t(ji,jj,jk) 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 END DO END DO END DO ! ENDIF ! IF( lrst_oce ) THEN ! Write in the ocean restart file ! ******************************* IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) 'qsr tracer content forcing field written in ocean restart file ', & & 'at it= ', kt,' date= ', ndastp IF(lwp) WRITE(numout,*) '~~~~' IF(nn_timing == 2) CALL timing_start('iom_rstput') CALL iom_rstput( kt, nitrst, numrow, 'qsr_hc_b' , qsr_hc ) CALL iom_rstput( kt, nitrst, numrow, 'fraqsr_1lev', fraqsr_1lev ) ! default definition in sbcssm IF(nn_timing == 2) CALL timing_stop('iom_rstput') ! ENDIF IF( l_trdtra ) THEN ! qsr tracers trends saved for diagnostics ztrdt(:,:,:) = tsa(:,:,:,jp_tem) - ztrdt(:,:,:) CALL trd_tra( kt, 'TRA', jp_tem, jptra_qsr, ztrdt ) CALL wrk_dealloc( jpi, jpj, jpk, ztrdt ) ENDIF ! ! print mean trends (used for debugging) IF(ln_ctl) CALL prt_ctl( tab3d_1=tsa(:,:,:,jp_tem), clinfo1=' qsr - Ta: ', mask1=tmask, clinfo3='tra-ta' ) ! CALL wrk_dealloc( jpi, jpj, zekb, zekg, zekr ) CALL wrk_dealloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea, zchl3d ) ! IF( nn_timing == 1 ) CALL timing_stop('tra_qsr') ! END SUBROUTINE tra_qsr SUBROUTINE tra_qsr_init !!---------------------------------------------------------------------- !! *** ROUTINE tra_qsr_init *** !! !! ** Purpose : Initialization for the penetrative solar radiation !! !! ** Method : The profile of solar radiation within the ocean is set !! from two length scale of penetration (rn_si0,rn_si1) and a ratio !! (rn_abs). These parameters are read in the namtra_qsr namelist. The !! default values correspond to clear water (type I in Jerlov' !! (1968) classification. !! called by tra_qsr at the first timestep (nit000) !! !! ** Action : - initialize rn_si0, rn_si1 and rn_abs !! !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. !!---------------------------------------------------------------------- ! INTEGER :: ji, jj, jk ! dummy loop indices INTEGER :: irgb, ierror, ioptio, nqsr ! local integer INTEGER :: ios ! Local integer output status for namelist read REAL(wp) :: zz0, zc0 , zc1, zcoef ! local scalars REAL(wp) :: zz1, zc2 , zc3, zchl ! - - REAL(wp), POINTER, DIMENSION(:,: ) :: zekb, zekg, zekr REAL(wp), POINTER, DIMENSION(:,:,:) :: ze0, ze1, ze2, ze3, zea ! CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files TYPE(FLD_N) :: sn_chl ! informations about the chlorofyl field to be read !! NAMELIST/namtra_qsr/ sn_chl, cn_dir, ln_traqsr, ln_qsr_rgb, ln_qsr_2bd, ln_qsr_bio, ln_qsr_ice, & & nn_chldta, rn_abs, rn_si0, rn_si1 !!---------------------------------------------------------------------- ! IF( nn_timing == 1 ) CALL timing_start('tra_qsr_init') ! CALL wrk_alloc( jpi, jpj, zekb, zekg, zekr ) CALL wrk_alloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) ! REWIND( numnam_ref ) ! Namelist namtra_qsr in reference namelist : Ratio and length of penetration READ ( numnam_ref, namtra_qsr, IOSTAT = ios, ERR = 901) 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_qsr in reference namelist', lwp ) REWIND( numnam_cfg ) ! Namelist namtra_qsr in configuration namelist : Ratio and length of penetration READ ( numnam_cfg, namtra_qsr, IOSTAT = ios, ERR = 902 ) 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_qsr in configuration namelist', lwp ) IF(lwm) WRITE ( numond, namtra_qsr ) ! IF(lwp) THEN ! control print WRITE(numout,*) WRITE(numout,*) 'tra_qsr_init : penetration of the surface solar radiation' WRITE(numout,*) '~~~~~~~~~~~~' WRITE(numout,*) ' Namelist namtra_qsr : set the parameter of penetration' WRITE(numout,*) ' Light penetration (T) or not (F) ln_traqsr = ', ln_traqsr WRITE(numout,*) ' RGB (Red-Green-Blue) light penetration ln_qsr_rgb = ', ln_qsr_rgb WRITE(numout,*) ' 2 band light penetration ln_qsr_2bd = ', ln_qsr_2bd WRITE(numout,*) ' bio-model light penetration ln_qsr_bio = ', ln_qsr_bio WRITE(numout,*) ' light penetration for ice-model LIM3 ln_qsr_ice = ', ln_qsr_ice WRITE(numout,*) ' RGB : Chl data (=1/2) or cst value (=0) nn_chldta = ', nn_chldta WRITE(numout,*) ' RGB & 2 bands: fraction of light (rn_si1) rn_abs = ', rn_abs WRITE(numout,*) ' RGB & 2 bands: shortess depth of extinction rn_si0 = ', rn_si0 WRITE(numout,*) ' 2 bands: longest depth of extinction rn_si1 = ', rn_si1 ENDIF IF( ln_traqsr ) THEN ! control consistency ! IF( .NOT.lk_qsr_bio .AND. ln_qsr_bio ) THEN CALL ctl_warn( 'No bio model : force ln_qsr_bio = FALSE ' ) ln_qsr_bio = .FALSE. ENDIF ! ioptio = 0 ! Parameter control IF( ln_qsr_rgb ) ioptio = ioptio + 1 IF( ln_qsr_2bd ) ioptio = ioptio + 1 IF( ln_qsr_bio ) ioptio = ioptio + 1 ! IF( ioptio /= 1 ) & CALL ctl_stop( ' Choose ONE type of light penetration in namelist namtra_qsr', & & ' 2 bands, 3 RGB bands or bio-model light penetration' ) ! IF( ln_qsr_rgb .AND. nn_chldta == 0 ) nqsr = 1 IF( ln_qsr_rgb .AND. nn_chldta == 1 ) nqsr = 2 IF( ln_qsr_rgb .AND. nn_chldta == 2 ) nqsr = 3 IF( ln_qsr_2bd ) nqsr = 4 IF( ln_qsr_bio ) nqsr = 5 ! IF(lwp) THEN ! Print the choice WRITE(numout,*) IF( nqsr == 1 ) WRITE(numout,*) ' R-G-B light penetration - Constant Chlorophyll' IF( nqsr == 2 ) WRITE(numout,*) ' R-G-B light penetration - 2D Chl data ' IF( nqsr == 3 ) WRITE(numout,*) ' R-G-B light penetration - 3D Chl data ' IF( nqsr == 4 ) WRITE(numout,*) ' 2 bands light penetration' IF( nqsr == 5 ) WRITE(numout,*) ' bio-model light penetration' ENDIF ! ENDIF ! ! ===================================== ! IF( ln_traqsr ) THEN ! Initialisation of Light Penetration ! ! ! ===================================== ! ! ALLOCATE( xsi0r(jpi,jpj) ) xsi0r = 1.e0 / rn_si0 xsi1r = 1.e0 / rn_si1 ! ! ---------------------------------- ! IF( ln_qsr_rgb ) THEN ! Red-Green-Blue light penetration ! ! ! ---------------------------------- ! ! CALL trc_oce_rgb( rkrgb ) !* tabulated attenuation coef. ! ! !* level of light extinction IF( ln_sco ) THEN ; nksr = jpkm1 ELSE ; nksr = trc_oce_ext_lev( r_si2, 0.33e2 ) ENDIF IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_1d(nksr+1), ' m' ! IF( nn_chldta == 1 .OR. nn_chldta == 2 ) THEN !* Chl data : set sf_chl structure IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) ' Chlorophyll read in a file' ALLOCATE( sf_chl(1), STAT=ierror ) IF( ierror > 0 ) THEN CALL ctl_stop( 'tra_qsr_init: unable to allocate sf_chl structure' ) ; RETURN ENDIF ALLOCATE( sf_chl(1)%fnow(jpi,jpj,1) ) IF( sn_chl%ln_tint )ALLOCATE( sf_chl(1)%fdta(jpi,jpj,1,2) ) ! ! fill sf_chl with sn_chl and control print CALL fld_fill( sf_chl, (/ sn_chl /), cn_dir, 'tra_qsr_init', & & 'Solar penetration function of read chlorophyll', 'namtra_qsr' ) ! ELSE !* constant Chl : compute once for all the distribution of light (etot3) IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) ' Constant Chlorophyll concentration = 0.05' IF( lk_vvl ) THEN ! variable volume IF(lwp) WRITE(numout,*) ' key_vvl: light distribution will be computed at each time step' ELSE ! constant volume: computes one for all IF(lwp) WRITE(numout,*) ' fixed volume: light distribution computed one for all' ! zchl = 0.05 ! constant chlorophyll irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) zekb(:,:) = rkrgb(1,irgb) ! Separation in R-G-B depending of the chlorophyll zekg(:,:) = rkrgb(2,irgb) zekr(:,:) = rkrgb(3,irgb) ! zcoef = ( 1. - rn_abs ) / 3.e0 ! equi-partition in R-G-B ze0(:,:,1) = rn_abs ze1(:,:,1) = zcoef ze2(:,:,1) = zcoef ze3(:,:,1) = zcoef zea(:,:,1) = tmask(:,:,1) ! = ( ze0+ze1+z2+ze3 ) * tmask DO jk = 2, nksr+1 !CDIR NOVERRCHK DO jj = 1, jpj !CDIR NOVERRCHK DO ji = 1, jpi zc0 = ze0(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * xsi0r(ji,jj) ) zc1 = ze1(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * zekb(ji,jj) ) zc2 = ze2(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * zekg(ji,jj) ) zc3 = ze3(ji,jj,jk-1) * EXP( - e3t_0(ji,jj,jk-1) * zekr(ji,jj) ) ze0(ji,jj,jk) = zc0 ze1(ji,jj,jk) = zc1 ze2(ji,jj,jk) = zc2 ze3(ji,jj,jk) = zc3 zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) END DO END DO END DO ! DO jk = 1, nksr ! (ISF) no light penetration below the ice shelves etot3(:,:,jk) = r1_rau0_rcp * ( zea(:,:,jk) - zea(:,:,jk+1) ) * tmask(:,:,1) END DO etot3(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero ENDIF ENDIF ! ENDIF ! ! ---------------------------------- ! IF( ln_qsr_2bd ) THEN ! 2 bands light penetration ! ! ! ---------------------------------- ! ! ! ! level of light extinction nksr = trc_oce_ext_lev( rn_si1, 1.e2 ) IF(lwp) THEN WRITE(numout,*) IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_1d(nksr+1), ' m' ENDIF ! IF( lk_vvl ) THEN ! variable volume IF(lwp) WRITE(numout,*) ' key_vvl: light distribution will be computed at each time step' ELSE ! constant volume: computes one for all zz0 = rn_abs * r1_rau0_rcp zz1 = ( 1. - rn_abs ) * r1_rau0_rcp DO jk = 1, nksr !* solar heat absorbed at T-point computed once for all DO jj = 1, jpj ! top 400 meters DO ji = 1, jpi zc0 = zz0 * EXP( -fsdepw(ji,jj,jk )*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,jk )*xsi1r ) zc1 = zz0 * EXP( -fsdepw(ji,jj,jk+1)*xsi0r(ji,jj) ) + zz1 * EXP( -fsdepw(ji,jj,jk+1)*xsi1r ) etot3(ji,jj,jk) = ( zc0 * tmask(ji,jj,jk) - zc1 * tmask(ji,jj,jk+1) ) * tmask(ji,jj,1) END DO END DO END DO etot3(:,:,nksr+1:jpk) = 0.e0 ! below 400m set to zero ! ENDIF ENDIF ! ! ===================================== ! ELSE ! No light penetration ! ! ! ===================================== ! IF(lwp) THEN WRITE(numout,*) WRITE(numout,*) 'tra_qsr_init : NO solar flux penetration' WRITE(numout,*) '~~~~~~~~~~~~' ENDIF ENDIF ! ! initialisation of fraqsr_1lev used in sbcssm IF( iom_varid( numror, 'fraqsr_1lev', ldstop = .FALSE. ) > 0 ) THEN IF(nn_timing == 2) CALL timing_start('iom_rstget') CALL iom_get( numror, jpdom_autoglo, 'fraqsr_1lev' , fraqsr_1lev ) IF(nn_timing == 2) CALL timing_stop('iom_rstget') ELSE fraqsr_1lev(:,:) = 1._wp ! default definition ENDIF ! CALL wrk_dealloc( jpi, jpj, zekb, zekg, zekr ) CALL wrk_dealloc( jpi, jpj, jpk, ze0, ze1, ze2, ze3, zea ) ! IF( nn_timing == 1 ) CALL timing_stop('tra_qsr_init') ! END SUBROUTINE tra_qsr_init !!====================================================================== END MODULE traqsr