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+MODULE sbcblk_clio
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+ !!======================================================================
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+ !! *** MODULE sbcblk_clio ***
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+ !! Ocean forcing: bulk thermohaline forcing of the ocean (or ice)
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+ !!=====================================================================
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+ !! History : OPA ! 1997-06 (Louvain-La-Neuve) Original code
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+ !! ! 2001-04 (C. Ethe) add flx_blk_declin
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+ !! NEMO 2.0 ! 2002-08 (C. Ethe, G. Madec) F90: Free form and module
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+ !! 3.0 ! 2008-03 (C. Talandier, G. Madec) surface module + LIM3
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+ !! 3.2 ! 2009-04 (B. Lemaire) Introduce iom_put
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+ !!----------------------------------------------------------------------
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+
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+ !!----------------------------------------------------------------------
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+ !! sbc_blk_clio : CLIO bulk formulation: read and update required input fields
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+ !! blk_clio_oce : ocean CLIO bulk formulea: compute momentum, heat and freswater fluxes for the ocean
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+ !! blk_ice_clio : ice CLIO bulk formulea: compute momentum, heat and freswater fluxes for the sea-ice
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+ !! blk_clio_qsr_oce : shortwave radiation for ocean computed from the cloud cover
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+ !! blk_clio_qsr_ice : shortwave radiation for ice computed from the cloud cover
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+ !! flx_blk_declin : solar declination
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+ !!----------------------------------------------------------------------
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+ USE oce ! ocean dynamics and tracers
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+ USE dom_oce ! ocean space and time domain
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+ USE phycst ! physical constants
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+ USE fldread ! read input fields
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+ USE sbc_oce ! Surface boundary condition: ocean fields
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+ USE iom ! I/O manager library
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+ USE in_out_manager ! I/O manager
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+ USE lib_mpp ! distribued memory computing library
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+ USE wrk_nemo ! work arrays
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+ USE timing ! Timing
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+ USE lbclnk ! ocean lateral boundary conditions (or mpp link)
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+ USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined)
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+
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+ USE albedo
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+ USE prtctl ! Print control
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+#if defined key_lim3
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+ USE ice
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+ USE sbc_ice ! Surface boundary condition: ice fields
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+ USE limthd_dh ! for CALL lim_thd_snwblow
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+#elif defined key_lim2
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+ USE ice_2
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+ USE sbc_ice ! Surface boundary condition: ice fields
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+ USE par_ice_2 ! Surface boundary condition: ice fields
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+#endif
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+
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+ IMPLICIT NONE
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+ PRIVATE
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+
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+ PUBLIC sbc_blk_clio ! routine called by sbcmod.F90
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+#if defined key_lim2 || defined key_lim3
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+ PUBLIC blk_ice_clio_tau ! routine called by sbcice_lim.F90
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+ PUBLIC blk_ice_clio_flx ! routine called by sbcice_lim.F90
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+#endif
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+
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+ INTEGER , PARAMETER :: jpfld = 7 ! maximum number of files to read
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+ INTEGER , PARAMETER :: jp_utau = 1 ! index of wind stress (i-component) (N/m2) at U-point
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+ INTEGER , PARAMETER :: jp_vtau = 2 ! index of wind stress (j-component) (N/m2) at V-point
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+ INTEGER , PARAMETER :: jp_wndm = 3 ! index of 10m wind module (m/s) at T-point
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+ INTEGER , PARAMETER :: jp_humi = 4 ! index of specific humidity ( % )
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+ INTEGER , PARAMETER :: jp_ccov = 5 ! index of cloud cover ( % )
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+ INTEGER , PARAMETER :: jp_tair = 6 ! index of 10m air temperature (Kelvin)
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+ INTEGER , PARAMETER :: jp_prec = 7 ! index of total precipitation (rain+snow) (Kg/m2/s)
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+
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+ TYPE(FLD),ALLOCATABLE,DIMENSION(:) :: sf ! structure of input fields (file informations, fields read)
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+
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+ INTEGER, PARAMETER :: jpintsr = 24 ! number of time step between sunrise and sunset
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+ ! ! uses for heat flux computation
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+ LOGICAL :: lbulk_init = .TRUE. ! flag, bulk initialization done or not)
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+
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+ REAL(wp) :: cai = 1.40e-3 ! best estimate of atm drag in order to get correct FS export in ORCA2-LIM
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+ REAL(wp) :: cao = 1.00e-3 ! chosen by default ==> should depends on many things... !!gmto be updated
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+
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+ REAL(wp) :: rdtbs2 !:
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+
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+ REAL(wp), DIMENSION(19) :: budyko ! BUDYKO's coefficient (cloudiness effect on LW radiation)
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+ DATA budyko / 1.00, 0.98, 0.95, 0.92, 0.89, 0.86, 0.83, 0.80, 0.78, 0.75, &
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+ & 0.72, 0.69, 0.67, 0.64, 0.61, 0.58, 0.56, 0.53, 0.50 /
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+ REAL(wp), DIMENSION(20) :: tauco ! cloud optical depth coefficient
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+ DATA tauco / 6.6, 6.6, 7.0, 7.2, 7.1, 6.8, 6.5, 6.6, 7.1, 7.6, &
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+ & 6.6, 6.1, 5.6, 5.5, 5.8, 5.8, 5.6, 5.6, 5.6, 5.6 /
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+ !!
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+ REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: sbudyko ! cloudiness effect on LW radiation
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+ REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: stauc ! cloud optical depth
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+
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+ REAL(wp) :: eps20 = 1.e-20 ! constant values
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+
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+ !! * Substitutions
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+# include "vectopt_loop_substitute.h90"
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+ !!----------------------------------------------------------------------
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+ !! NEMO/OPA 4.0 , NEMO Consortium (2011)
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+ !! $Id: sbcblk_clio.F90 6399 2016-03-22 17:17:23Z clem $
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+ !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
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+ !!----------------------------------------------------------------------
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+CONTAINS
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+
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+ SUBROUTINE sbc_blk_clio( kt )
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+ !!---------------------------------------------------------------------
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+ !! *** ROUTINE sbc_blk_clio ***
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+ !!
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+ !! ** Purpose : provide at each time step the surface ocean fluxes
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+ !! (momentum, heat, freshwater and runoff)
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+ !!
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+ !! ** Method : (1) READ each fluxes in NetCDF files:
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+ !! the i-component of the stress (N/m2)
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+ !! the j-component of the stress (N/m2)
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+ !! the 10m wind speed module (m/s)
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+ !! the 10m air temperature (Kelvin)
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+ !! the 10m specific humidity (%)
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+ !! the cloud cover (%)
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+ !! the total precipitation (rain+snow) (Kg/m2/s)
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+ !! (2) CALL blk_oce_clio
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+ !!
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+ !! C A U T I O N : never mask the surface stress fields
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+ !! the stress is assumed to be in the (i,j) mesh referential
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+ !!
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+ !! ** Action : defined at each time-step at the air-sea interface
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+ !! - utau, vtau i- and j-component of the wind stress
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+ !! - taum wind stress module at T-point
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+ !! - wndm 10m wind module at T-point over free ocean or leads in presence of sea-ice
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+ !! - qns non-solar heat flux including latent heat of solid
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+ !! precip. melting and emp heat content
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+ !! - qsr solar heat flux
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+ !! - emp upward mass flux (evap. - precip)
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+ !! - sfx salt flux; set to zero at nit000 but possibly non-zero
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+ !! if ice is present (computed in limsbc(_2).F90)
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+ !!----------------------------------------------------------------------
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+ INTEGER, INTENT( in ) :: kt ! ocean time step
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+ !!
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+ INTEGER :: ifpr, jfpr ! dummy indices
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+ INTEGER :: ierr0, ierr1, ierr2, ierr3 ! return error code
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+ INTEGER :: ios ! Local integer output status for namelist read
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+ !!
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+ CHARACTER(len=100) :: cn_dir ! Root directory for location of CLIO files
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+ TYPE(FLD_N), DIMENSION(jpfld) :: slf_i ! array of namelist informations on the fields to read
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+ TYPE(FLD_N) :: sn_utau, sn_vtau, sn_wndm, sn_tair ! informations about the fields to be read
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+ TYPE(FLD_N) :: sn_humi, sn_ccov, sn_prec ! " "
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+ !!
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+ NAMELIST/namsbc_clio/ cn_dir, sn_utau, sn_vtau, sn_wndm, sn_humi, &
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+ & sn_ccov, sn_tair, sn_prec
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+ !!---------------------------------------------------------------------
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+
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+ ! ! ====================== !
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+ IF( kt == nit000 ) THEN ! First call kt=nit000 !
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+ ! ! ====================== !
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+
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+ REWIND( numnam_ref ) ! Namelist namsbc_clio in reference namelist : CLIO files
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+ READ ( numnam_ref, namsbc_clio, IOSTAT = ios, ERR = 901)
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+901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_clio in reference namelist', lwp )
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+
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+ REWIND( numnam_cfg ) ! Namelist namsbc_clio in configuration namelist : CLIO files
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+ READ ( numnam_cfg, namsbc_clio, IOSTAT = ios, ERR = 902 )
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+902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_clio in configuration namelist', lwp )
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+ IF(lwm) WRITE ( numond, namsbc_clio )
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+
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+ ! store namelist information in an array
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+ slf_i(jp_utau) = sn_utau ; slf_i(jp_vtau) = sn_vtau ; slf_i(jp_wndm) = sn_wndm
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+ slf_i(jp_tair) = sn_tair ; slf_i(jp_humi) = sn_humi
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+ slf_i(jp_ccov) = sn_ccov ; slf_i(jp_prec) = sn_prec
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+
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+ ! set sf structure
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+ ALLOCATE( sf(jpfld), STAT=ierr0 )
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+ IF( ierr0 > 0 ) CALL ctl_stop( 'STOP', 'sbc_blk_clio: unable to allocate sf structure' )
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+ DO ifpr= 1, jpfld
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+ ALLOCATE( sf(ifpr)%fnow(jpi,jpj,1) , STAT=ierr1)
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+ IF( slf_i(ifpr)%ln_tint ) ALLOCATE( sf(ifpr)%fdta(jpi,jpj,1,2) , STAT=ierr2 )
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+ END DO
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+ IF( ierr1+ierr2 > 0 ) CALL ctl_stop( 'STOP', 'sbc_blk_clio: unable to allocate sf array structure' )
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+ ! fill sf with slf_i and control print
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+ CALL fld_fill( sf, slf_i, cn_dir, 'sbc_blk_clio', 'flux formulation for ocean surface boundary condition', 'namsbc_clio' )
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+
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+ ! allocate sbcblk clio arrays
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+ ALLOCATE( sbudyko(jpi,jpj) , stauc(jpi,jpj), STAT=ierr3 )
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+ IF( ierr3 > 0 ) CALL ctl_stop( 'STOP', 'sbc_blk_clio: unable to allocate arrays' )
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+ !
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+ sfx(:,:) = 0._wp ! salt flux; zero unless ice is present (computed in limsbc(_2).F90)
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+ !
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+ ENDIF
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+ ! ! ====================== !
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+ ! ! At each time-step !
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+ ! ! ====================== !
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+ !
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+ CALL fld_read( kt, nn_fsbc, sf ) ! input fields provided at the current time-step
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+ !
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+ IF( MOD( kt - 1, nn_fsbc ) == 0 ) CALL blk_oce_clio( sf, sst_m )
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+ !
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+ END SUBROUTINE sbc_blk_clio
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+
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+
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+ SUBROUTINE blk_oce_clio( sf, pst )
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+ !!---------------------------------------------------------------------------
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+ !! *** ROUTINE blk_oce_clio ***
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+ !!
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+ !! ** Purpose : Compute momentum, heat and freshwater fluxes at ocean surface
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+ !! using CLIO bulk formulea
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+ !!
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+ !! ** Method : The flux of heat at the ocean surfaces are derived
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+ !! from semi-empirical ( or bulk ) formulae which relate the flux to
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+ !! the properties of the surface and of the lower atmosphere. Here, we
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+ !! follow the work of Oberhuber, 1988
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+ !! - momentum flux (stresses) directly read in files at U- and V-points
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+ !! - compute ocean/ice albedos (call albedo_oce/albedo_ice)
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+ !! - compute shortwave radiation for ocean (call blk_clio_qsr_oce)
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+ !! - compute long-wave radiation for the ocean
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+ !! - compute the turbulent heat fluxes over the ocean
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+ !! - deduce the evaporation over the ocean
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+ !! ** Action : Fluxes over the ocean:
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+ !! - utau, vtau i- and j-component of the wind stress
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+ !! - taum wind stress module at T-point
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+ !! - wndm 10m wind module at T-point over free ocean or leads in presence of sea-ice
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+ !! - qns non-solar heat flux including latent heat of solid
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+ !! precip. melting and emp heat content
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+ !! - qsr solar heat flux
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+ !! - emp suface mass flux (evap.-precip.)
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+ !! ** Nota : sf has to be a dummy argument for AGRIF on NEC
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+ !!----------------------------------------------------------------------
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+ TYPE(fld), INTENT(in), DIMENSION(:) :: sf ! input data
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+ REAL(wp) , INTENT(in), DIMENSION(jpi,jpj) :: pst ! surface temperature [Celcius]
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+ !!
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+ INTEGER :: ji, jj ! dummy loop indices
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+ !!
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+ REAL(wp) :: zrhova, zcsho, zcleo, zcldeff ! temporary scalars
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+ REAL(wp) :: zqsato, zdteta, zdeltaq, ztvmoy, zobouks ! - -
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+ REAL(wp) :: zpsims, zpsihs, zpsils, zobouku, zxins, zpsimu ! - -
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+ REAL(wp) :: zpsihu, zpsilu, zstab,zpsim, zpsih, zpsil ! - -
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+ REAL(wp) :: zvatmg, zcmn, zchn, zcln, zcmcmn, zdenum ! - -
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+ REAL(wp) :: zdtetar, ztvmoyr, zlxins, zchcm, zclcm ! - -
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+ REAL(wp) :: zmt1, zmt2, zmt3, ztatm3, ztamr, ztaevbk ! - -
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+ REAL(wp) :: zsst, ztatm, zcco1, zpatm, zcmax, zrmax ! - -
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+ REAL(wp) :: zrhoa, zev, zes, zeso, zqatm, zevsqr ! - -
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+ REAL(wp) :: ztx2, zty2, zcevap, zcprec ! - -
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+ REAL(wp) :: ztau1 ! TECLIM change
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+ REAL(wp), DIMENSION(jpi,jpj) :: ztau2 ! TECLIM change
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+ REAL(wp), POINTER, DIMENSION(:,:) :: zqlw ! long-wave heat flux over ocean
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+ REAL(wp), POINTER, DIMENSION(:,:) :: zqla ! latent heat flux over ocean
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+ REAL(wp), POINTER, DIMENSION(:,:) :: zqsb ! sensible heat flux over ocean
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+ !!---------------------------------------------------------------------
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+ !
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+ IF( nn_timing == 1 ) CALL timing_start('blk_oce_clio')
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+ !
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+ CALL wrk_alloc( jpi,jpj, zqlw, zqla, zqsb )
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+
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+ zpatm = 101000._wp ! atmospheric pressure (assumed constant here)
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+
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+ !------------------------------------!
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+ ! momentum fluxes (utau, vtau ) !
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+ !------------------------------------!
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+!CDIR COLLAPSE
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+ utau(:,:) = sf(jp_utau)%fnow(:,:,1)
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+!CDIR COLLAPSE
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+ vtau(:,:) = sf(jp_vtau)%fnow(:,:,1)
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+
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+! begin TECLIM change
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+ CALL lbc_lnk( utau, 'U', -1. )
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+ CALL lbc_lnk( vtau, 'V', -1. )
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+
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+ ! In the way we use CLIO forcings in TECLIM, utau and vtau are not the
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+ ! wind stress components as they should be, but the wind components. In
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+ ! this case (corresponding to sf(jp_utau)%clvar == 'uwnd') a special
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+ ! treatement is needed in the next section (ie a change from wind speed
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+ ! to wind stress over the ocean). This is inspired by what is done in the
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+ ! subroutine lim_sbc_tau in limsbc.F90.
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+ !
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+ ! Notes : * 1.3 = air density
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+ ! * cao is used
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+
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+ !------------------------------------!
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+ ! wind stress module (taum ) !
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+ !------------------------------------!
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+ IF( sf(jp_utau)%clvar == 'uwnd' ) THEN
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+!CDIR NOVERRCHK
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+ DO jj = 2, jpjm1
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+!CDIR NOVERRCHK
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+ DO ji = fs_2, fs_jpim1 ! vector opt.
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+ ztx2 = utau(ji-1,jj ) + utau(ji,jj)
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+ zty2 = vtau(ji ,jj-1) + vtau(ji,jj)
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+
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+ ztau1 = 0.25 * ( ztx2 * ztx2 + zty2 * zty2 )
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+ taum(ji,jj) = 1.3 * cao * ztau1
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+ ztau2(ji,jj) = 1.3 * cao * SQRT ( ztau1 )
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+ END DO
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+ END DO
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+ taum(:,:) = taum(:,:) * tmask(:,:,1)
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+ CALL lbc_lnk( taum, 'T', 1. )
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+ CALL lbc_lnk( ztau2, 'T', 1. )
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+
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+!CDIR NOVERRCHK
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+ DO jj = 2, jpjm1
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+!CDIR NOVERRCHK
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+ DO ji = fs_2, fs_jpim1 ! vector opt.
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+ utau(ji,jj) = 0.5 * ( ztau2(ji,jj) + ztau2(ji+1,jj) ) * utau(ji,jj)
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+ vtau(ji,jj) = 0.5 * ( ztau2(ji,jj) + ztau2(ji,jj+1) ) * vtau(ji,jj)
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+ END DO
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+ END DO
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+ utau(:,:) = utau(:,:) * umask(:,:,1)
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+ vtau(:,:) = vtau(:,:) * vmask(:,:,1)
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+ CALL lbc_lnk( utau, 'U', -1. )
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+ CALL lbc_lnk( vtau, 'V', -1. )
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+ ELSE
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+!CDIR NOVERRCHK
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+ DO jj = 2, jpjm1
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+!CDIR NOVERRCHK
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+ DO ji = fs_2, fs_jpim1 ! vector opt.
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+ ztx2 = utau(ji-1,jj ) + utau(ji,jj)
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+ zty2 = vtau(ji ,jj-1) + vtau(ji,jj)
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+ taum(ji,jj) = 0.5 * SQRT( ztx2 * ztx2 + zty2 * zty2 )
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+ END DO
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+ END DO
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+ utau(:,:) = utau(:,:) * umask(:,:,1)
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+ vtau(:,:) = vtau(:,:) * vmask(:,:,1)
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+ taum(:,:) = taum(:,:) * tmask(:,:,1)
|
|
|
+ CALL lbc_lnk( taum, 'T', 1. )
|
|
|
+ ENDIF
|
|
|
+! end TECLIM change
|
|
|
+
|
|
|
+ !------------------------------------!
|
|
|
+ ! store the wind speed (wndm ) !
|
|
|
+ !------------------------------------!
|
|
|
+!CDIR COLLAPSE
|
|
|
+ wndm(:,:) = sf(jp_wndm)%fnow(:,:,1)
|
|
|
+ wndm(:,:) = wndm(:,:) * tmask(:,:,1)
|
|
|
+
|
|
|
+ !------------------------------------------------!
|
|
|
+ ! Shortwave radiation for ocean and snow/ice !
|
|
|
+ !------------------------------------------------!
|
|
|
+
|
|
|
+ CALL blk_clio_qsr_oce( qsr )
|
|
|
+ qsr(:,:) = qsr(:,:) * tmask(:,:,1) ! no shortwave radiation into the ocean beneath ice shelf
|
|
|
+ !------------------------!
|
|
|
+ ! Other ocean fluxes !
|
|
|
+ !------------------------!
|
|
|
+!CDIR NOVERRCHK
|
|
|
+!CDIR COLLAPSE
|
|
|
+ DO jj = 1, jpj
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO ji = 1, jpi
|
|
|
+ !
|
|
|
+ zsst = pst(ji,jj) + rt0 ! converte Celcius to Kelvin the SST
|
|
|
+ ztatm = sf(jp_tair)%fnow(ji,jj,1) ! and set minimum value far above 0 K (=rt0 over land)
|
|
|
+ zcco1 = 1.0 - sf(jp_ccov)%fnow(ji,jj,1) ! fraction of clear sky ( 1 - cloud cover)
|
|
|
+ zrhoa = zpatm / ( 287.04 * ztatm ) ! air density (equation of state for dry air)
|
|
|
+ ztamr = ztatm - rtt ! Saturation water vapour
|
|
|
+ zmt1 = SIGN( 17.269, ztamr ) ! ||
|
|
|
+ zmt2 = SIGN( 21.875, ztamr ) ! \ /
|
|
|
+ zmt3 = SIGN( 28.200, -ztamr ) ! \/
|
|
|
+ zes = 611.0 * EXP( ABS( ztamr ) * MIN ( zmt1, zmt2 ) / ( ztatm - 35.86 + MAX( 0.e0, zmt3 ) ) )
|
|
|
+ zev = sf(jp_humi)%fnow(ji,jj,1) * zes ! vapour pressure
|
|
|
+ zevsqr = SQRT( zev * 0.01 ) ! square-root of vapour pressure
|
|
|
+ zqatm = 0.622 * zev / ( zpatm - 0.378 * zev ) ! specific humidity
|
|
|
+
|
|
|
+ !--------------------------------------!
|
|
|
+ ! long-wave radiation over the ocean ! ( Berliand 1952 ; all latitudes )
|
|
|
+ !--------------------------------------!
|
|
|
+ ztatm3 = ztatm * ztatm * ztatm
|
|
|
+ zcldeff = 1.0 - sbudyko(ji,jj) * sf(jp_ccov)%fnow(ji,jj,1) * sf(jp_ccov)%fnow(ji,jj,1)
|
|
|
+ ztaevbk = ztatm * ztatm3 * zcldeff * ( 0.39 - 0.05 * zevsqr )
|
|
|
+ !
|
|
|
+ zqlw(ji,jj) = - emic * stefan * ( ztaevbk + 4. * ztatm3 * ( zsst - ztatm ) )
|
|
|
+
|
|
|
+ !--------------------------------------------------
|
|
|
+ ! Latent and sensible heat fluxes over the ocean
|
|
|
+ !--------------------------------------------------
|
|
|
+ ! ! vapour pressure at saturation of ocean
|
|
|
+ zeso = 611.0 * EXP ( 17.2693884 * ( zsst - rtt ) * tmask(ji,jj,1) / ( zsst - 35.86 ) )
|
|
|
+
|
|
|
+ zqsato = ( 0.622 * zeso ) / ( zpatm - 0.378 * zeso ) ! humidity close to the ocean surface (at saturation)
|
|
|
+
|
|
|
+ ! Drag coefficients from Large and Pond (1981,1982)
|
|
|
+ ! ! Stability parameters
|
|
|
+ zdteta = zsst - ztatm
|
|
|
+ zdeltaq = zqatm - zqsato
|
|
|
+ ztvmoy = ztatm * ( 1. + 2.2e-3 * ztatm * zqatm )
|
|
|
+ zdenum = MAX( sf(jp_wndm)%fnow(ji,jj,1) * sf(jp_wndm)%fnow(ji,jj,1) * ztvmoy, eps20 )
|
|
|
+ zdtetar = zdteta / zdenum
|
|
|
+ ztvmoyr = ztvmoy * ztvmoy * zdeltaq / zdenum
|
|
|
+ ! ! case of stable atmospheric conditions
|
|
|
+ zobouks = -70.0 * 10. * ( zdtetar + 3.2e-3 * ztvmoyr )
|
|
|
+ zobouks = MAX( 0.e0, zobouks )
|
|
|
+ zpsims = -7.0 * zobouks
|
|
|
+ zpsihs = zpsims
|
|
|
+ zpsils = zpsims
|
|
|
+ ! ! case of unstable atmospheric conditions
|
|
|
+ zobouku = MIN( 0.e0, -100.0 * 10.0 * ( zdtetar + 2.2e-3 * ztvmoyr ) )
|
|
|
+ zxins = ( 1. - 16. * zobouku )**0.25
|
|
|
+ zlxins = LOG( ( 1. + zxins * zxins ) / 2. )
|
|
|
+ zpsimu = 2. * LOG( ( 1 + zxins ) * 0.5 ) + zlxins - 2. * ATAN( zxins ) + rpi * 0.5
|
|
|
+ zpsihu = 2. * zlxins
|
|
|
+ zpsilu = zpsihu
|
|
|
+ ! ! intermediate values
|
|
|
+ zstab = MAX( 0.e0, SIGN( 1.e0, zdteta ) )
|
|
|
+ zpsim = zstab * zpsimu + ( 1.0 - zstab ) * zpsims
|
|
|
+ zpsih = zstab * zpsihu + ( 1.0 - zstab ) * zpsihs
|
|
|
+ zpsil = zpsih
|
|
|
+
|
|
|
+ zvatmg = MAX( 0.032 * 1.5e-3 * sf(jp_wndm)%fnow(ji,jj,1) * sf(jp_wndm)%fnow(ji,jj,1) / grav, eps20 )
|
|
|
+ zcmn = vkarmn / LOG ( 10. / zvatmg )
|
|
|
+ zchn = 0.0327 * zcmn
|
|
|
+ zcln = 0.0346 * zcmn
|
|
|
+ zcmcmn = 1. / ( 1. - zcmn * zpsim / vkarmn )
|
|
|
+ ! sometimes the ratio zchn * zpsih / ( vkarmn * zcmn ) is too close to 1 and zchcm becomes very very big
|
|
|
+ zcmax = 0.1 ! choice for maximum value of the heat transfer coefficient, guided by my intuition
|
|
|
+ zrmax = 1 - 3.e-4 / zcmax ! maximum value of the ratio
|
|
|
+ zchcm = zcmcmn / ( 1. - MIN ( zchn * zpsih / ( vkarmn * zcmn ) , zrmax ) )
|
|
|
+ zclcm = zchcm
|
|
|
+ ! ! transfert coef. (Large and Pond 1981,1982)
|
|
|
+ zcsho = zchn * zchcm
|
|
|
+ zcleo = zcln * zclcm
|
|
|
+
|
|
|
+ zrhova = zrhoa * sf(jp_wndm)%fnow(ji,jj,1)
|
|
|
+
|
|
|
+ ! sensible heat flux
|
|
|
+ zqsb(ji,jj) = zrhova * zcsho * 1004.0 * ( zsst - ztatm )
|
|
|
+
|
|
|
+ ! latent heat flux (bounded by zero)
|
|
|
+ zqla(ji,jj) = MAX( 0.e0, zrhova * zcleo * 2.5e+06 * ( zqsato - zqatm ) )
|
|
|
+ !
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+
|
|
|
+ ! ----------------------------------------------------------------------------- !
|
|
|
+ ! III Total FLUXES !
|
|
|
+ ! ----------------------------------------------------------------------------- !
|
|
|
+ zcevap = rcp / cevap ! convert zqla ==> evap (Kg/m2/s) ==> m/s ==> W/m2
|
|
|
+ zcprec = rcp / rday ! convert prec ( mm/day ==> m/s) ==> W/m2
|
|
|
+
|
|
|
+!CDIR COLLAPSE
|
|
|
+ emp(:,:) = zqla(:,:) / cevap & ! freshwater flux
|
|
|
+ & - sf(jp_prec)%fnow(:,:,1) / rday * tmask(:,:,1)
|
|
|
+ !
|
|
|
+!CDIR COLLAPSE
|
|
|
+ qns(:,:) = zqlw(:,:) - zqsb(:,:) - zqla(:,:) & ! Downward Non Solar flux
|
|
|
+ & - zqla(:,:) * pst(:,:) * zcevap & ! remove evap. heat content at SST in Celcius
|
|
|
+ & + sf(jp_prec)%fnow(:,:,1) * sf(jp_tair)%fnow(:,:,1) * zcprec ! add precip. heat content at Tair in Celcius
|
|
|
+ qns(:,:) = qns(:,:) * tmask(:,:,1)
|
|
|
+#if defined key_lim3
|
|
|
+ qns_oce(:,:) = zqlw(:,:) - zqsb(:,:) - zqla(:,:)
|
|
|
+ qsr_oce(:,:) = qsr(:,:)
|
|
|
+#endif
|
|
|
+ ! NB: if sea-ice model, the snow precip are computed and the associated heat is added to qns (see blk_ice_clio)
|
|
|
+
|
|
|
+ IF ( nn_ice == 0 ) THEN
|
|
|
+ CALL iom_put( "qlw_oce" , zqlw ) ! output downward longwave heat over the ocean
|
|
|
+ CALL iom_put( "qsb_oce" , - zqsb ) ! output downward sensible heat over the ocean
|
|
|
+ CALL iom_put( "qla_oce" , - zqla ) ! output downward latent heat over the ocean
|
|
|
+ CALL iom_put( "qemp_oce", qns-zqlw+zqsb+zqla ) ! output downward heat content of E-P over the ocean
|
|
|
+ CALL iom_put( "qns_oce" , qns ) ! output downward non solar heat over the ocean
|
|
|
+ CALL iom_put( "qsr_oce" , qsr ) ! output downward solar heat over the ocean
|
|
|
+ CALL iom_put( "qt_oce" , qns+qsr ) ! output total downward heat over the ocean
|
|
|
+ ENDIF
|
|
|
+
|
|
|
+ IF(ln_ctl) THEN
|
|
|
+ CALL prt_ctl(tab2d_1=zqsb , clinfo1=' blk_oce_clio: zqsb : ', tab2d_2=zqlw , clinfo2=' zqlw : ')
|
|
|
+ CALL prt_ctl(tab2d_1=zqla , clinfo1=' blk_oce_clio: zqla : ', tab2d_2=qsr , clinfo2=' qsr : ')
|
|
|
+ CALL prt_ctl(tab2d_1=pst , clinfo1=' blk_oce_clio: pst : ', tab2d_2=emp , clinfo2=' emp : ')
|
|
|
+ CALL prt_ctl(tab2d_1=utau , clinfo1=' blk_oce_clio: utau : ', mask1=umask, &
|
|
|
+ & tab2d_2=vtau , clinfo2=' vtau : ', mask2=vmask )
|
|
|
+ ENDIF
|
|
|
+
|
|
|
+ CALL wrk_dealloc( jpi,jpj, zqlw, zqla, zqsb )
|
|
|
+ !
|
|
|
+ IF( nn_timing == 1 ) CALL timing_stop('blk_oce_clio')
|
|
|
+ !
|
|
|
+ END SUBROUTINE blk_oce_clio
|
|
|
+
|
|
|
+# if defined key_lim2 || defined key_lim3
|
|
|
+ SUBROUTINE blk_ice_clio_tau
|
|
|
+ !!---------------------------------------------------------------------------
|
|
|
+ !! *** ROUTINE blk_ice_clio_tau ***
|
|
|
+ !!
|
|
|
+ !! ** Purpose : Computation momentum flux at the ice-atm interface
|
|
|
+ !!
|
|
|
+ !! ** Method : Read utau from a forcing file. Rearrange if C-grid
|
|
|
+ !!
|
|
|
+ !!----------------------------------------------------------------------
|
|
|
+ REAL(wp) :: zcoef
|
|
|
+ INTEGER :: ji, jj ! dummy loop indices
|
|
|
+ !!---------------------------------------------------------------------
|
|
|
+ !
|
|
|
+ IF( nn_timing == 1 ) CALL timing_start('blk_ice_clio_tau')
|
|
|
+
|
|
|
+ SELECT CASE( cp_ice_msh )
|
|
|
+
|
|
|
+ CASE( 'C' ) ! C-grid ice dynamics
|
|
|
+
|
|
|
+ zcoef = cai / cao ! Change from air-sea stress to air-ice stress
|
|
|
+ utau_ice(:,:) = zcoef * utau(:,:)
|
|
|
+ vtau_ice(:,:) = zcoef * vtau(:,:)
|
|
|
+
|
|
|
+ CASE( 'I' ) ! I-grid ice dynamics: I-point (i.e. F-point lower-left corner)
|
|
|
+
|
|
|
+ zcoef = 0.5_wp * cai / cao ! Change from air-sea stress to air-ice stress
|
|
|
+ DO jj = 2, jpj ! stress from ocean U- and V-points to ice U,V point
|
|
|
+ DO ji = 2, jpi ! I-grid : no vector opt.
|
|
|
+ utau_ice(ji,jj) = zcoef * ( utau(ji-1,jj ) + utau(ji-1,jj-1) )
|
|
|
+ vtau_ice(ji,jj) = zcoef * ( vtau(ji ,jj-1) + vtau(ji-1,jj-1) )
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+
|
|
|
+ CALL lbc_lnk( utau_ice(:,:), 'I', -1. ) ; CALL lbc_lnk( vtau_ice(:,:), 'I', -1. ) ! I-point
|
|
|
+
|
|
|
+ END SELECT
|
|
|
+
|
|
|
+ IF(ln_ctl) THEN
|
|
|
+ CALL prt_ctl(tab2d_1=utau_ice , clinfo1=' blk_ice_clio: utau_ice : ', tab2d_2=vtau_ice , clinfo2=' vtau_ice : ')
|
|
|
+ ENDIF
|
|
|
+
|
|
|
+ IF( nn_timing == 1 ) CALL timing_stop('blk_ice_clio_tau')
|
|
|
+
|
|
|
+ END SUBROUTINE blk_ice_clio_tau
|
|
|
+#endif
|
|
|
+
|
|
|
+# if defined key_lim2 || defined key_lim3
|
|
|
+ SUBROUTINE blk_ice_clio_flx( ptsu , palb_cs, palb_os, palb )
|
|
|
+ !!---------------------------------------------------------------------------
|
|
|
+ !! *** ROUTINE blk_ice_clio_flx ***
|
|
|
+ !!
|
|
|
+ !! ** Purpose : Computation of the heat fluxes at ocean and snow/ice
|
|
|
+ !! surface the solar heat at ocean and snow/ice surfaces and the
|
|
|
+ !! sensitivity of total heat fluxes to the SST variations
|
|
|
+ !!
|
|
|
+ !! ** Method : The flux of heat at the ice and ocean surfaces are derived
|
|
|
+ !! from semi-empirical ( or bulk ) formulae which relate the flux to
|
|
|
+ !! the properties of the surface and of the lower atmosphere. Here, we
|
|
|
+ !! follow the work of Oberhuber, 1988
|
|
|
+ !!
|
|
|
+ !! ** Action : call albedo_oce/albedo_ice to compute ocean/ice albedo
|
|
|
+ !! - snow precipitation
|
|
|
+ !! - solar flux at the ocean and ice surfaces
|
|
|
+ !! - the long-wave radiation for the ocean and sea/ice
|
|
|
+ !! - turbulent heat fluxes over water and ice
|
|
|
+ !! - evaporation over water
|
|
|
+ !! - total heat fluxes sensitivity over ice (dQ/dT)
|
|
|
+ !! - latent heat flux sensitivity over ice (dQla/dT)
|
|
|
+ !! - qns : modified the non solar heat flux over the ocean
|
|
|
+ !! to take into account solid precip latent heat flux
|
|
|
+ !!----------------------------------------------------------------------
|
|
|
+ REAL(wp), INTENT(in ), DIMENSION(:,:,:) :: ptsu ! ice surface temperature [Kelvin]
|
|
|
+ REAL(wp), INTENT(in ), DIMENSION(:,:,:) :: palb_cs ! ice albedo (clear sky) (alb_ice_cs) [-]
|
|
|
+ REAL(wp), INTENT(in ), DIMENSION(:,:,:) :: palb_os ! ice albedo (overcast sky) (alb_ice_os) [-]
|
|
|
+ REAL(wp), INTENT( out), DIMENSION(:,:,:) :: palb ! ice albedo (actual value) [-]
|
|
|
+ !!
|
|
|
+ INTEGER :: ji, jj, jl ! dummy loop indices
|
|
|
+ !!
|
|
|
+ REAL(wp) :: zmt1, zmt2, zmt3, ztatm3 ! temporary scalars
|
|
|
+ REAL(wp) :: ztaevbk, zind1, zind2, zind3, ztamr ! - -
|
|
|
+ REAL(wp) :: zesi, zqsati, zdesidt ! - -
|
|
|
+ REAL(wp) :: zdqla, zcldeff, zev, zes, zpatm, zrhova ! - -
|
|
|
+ REAL(wp) :: zcshi, zclei, zrhovaclei, zrhovacshi ! - -
|
|
|
+ REAL(wp) :: ztice3, zticemb, zticemb2, zdqlw, zdqsb ! - -
|
|
|
+ REAL(wp) :: z1_lsub ! - -
|
|
|
+ !!
|
|
|
+ REAL(wp), DIMENSION(:,:) , POINTER :: ztatm ! Tair in Kelvin
|
|
|
+ REAL(wp), DIMENSION(:,:) , POINTER :: zqatm ! specific humidity
|
|
|
+ REAL(wp), DIMENSION(:,:) , POINTER :: zevsqr ! vapour pressure square-root
|
|
|
+ REAL(wp), DIMENSION(:,:) , POINTER :: zrhoa ! air density
|
|
|
+ REAL(wp), DIMENSION(:,:,:), POINTER :: z_qlw, z_qsb
|
|
|
+ REAL(wp), DIMENSION(:,:) , POINTER :: zevap, zsnw
|
|
|
+ !!---------------------------------------------------------------------
|
|
|
+ !
|
|
|
+ IF( nn_timing == 1 ) CALL timing_start('blk_ice_clio_flx')
|
|
|
+ !
|
|
|
+ CALL wrk_alloc( jpi,jpj, ztatm, zqatm, zevsqr, zrhoa )
|
|
|
+ CALL wrk_alloc( jpi,jpj, jpl, z_qlw, z_qsb )
|
|
|
+
|
|
|
+ zpatm = 101000. ! atmospheric pressure (assumed constant here)
|
|
|
+ !--------------------------------------------------------------------------------
|
|
|
+ ! Determine cloud optical depths as a function of latitude (Chou et al., 1981).
|
|
|
+ ! and the correction factor for taking into account the effect of clouds
|
|
|
+ !--------------------------------------------------------------------------------
|
|
|
+
|
|
|
+!CDIR NOVERRCHK
|
|
|
+!CDIR COLLAPSE
|
|
|
+ DO jj = 1, jpj
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO ji = 1, jpi
|
|
|
+ ztatm (ji,jj) = sf(jp_tair)%fnow(ji,jj,1) ! air temperature in Kelvins
|
|
|
+
|
|
|
+ zrhoa(ji,jj) = zpatm / ( 287.04 * ztatm(ji,jj) ) ! air density (equation of state for dry air)
|
|
|
+
|
|
|
+ ztamr = ztatm(ji,jj) - rtt ! Saturation water vapour
|
|
|
+ zmt1 = SIGN( 17.269, ztamr )
|
|
|
+ zmt2 = SIGN( 21.875, ztamr )
|
|
|
+ zmt3 = SIGN( 28.200, -ztamr )
|
|
|
+ zes = 611.0 * EXP( ABS( ztamr ) * MIN ( zmt1, zmt2 ) &
|
|
|
+ & / ( ztatm(ji,jj) - 35.86 + MAX( 0.e0, zmt3 ) ) )
|
|
|
+
|
|
|
+ zev = sf(jp_humi)%fnow(ji,jj,1) * zes ! vapour pressure
|
|
|
+ zevsqr(ji,jj) = SQRT( zev * 0.01 ) ! square-root of vapour pressure
|
|
|
+ zqatm(ji,jj) = 0.622 * zev / ( zpatm - 0.378 * zev ) ! specific humidity
|
|
|
+
|
|
|
+ !----------------------------------------------------
|
|
|
+ ! Computation of snow precipitation (Ledley, 1985) |
|
|
|
+ !----------------------------------------------------
|
|
|
+ zmt1 = 253.0 - ztatm(ji,jj) ; zind1 = MAX( 0.e0, SIGN( 1.e0, zmt1 ) )
|
|
|
+ zmt2 = ( 272.0 - ztatm(ji,jj) ) / 38.0 ; zind2 = MAX( 0.e0, SIGN( 1.e0, zmt2 ) )
|
|
|
+ zmt3 = ( 281.0 - ztatm(ji,jj) ) / 18.0 ; zind3 = MAX( 0.e0, SIGN( 1.e0, zmt3 ) )
|
|
|
+ sprecip(ji,jj) = sf(jp_prec)%fnow(ji,jj,1) / rday & ! rday = converte mm/day to kg/m2/s
|
|
|
+ & * ( zind1 & ! solid (snow) precipitation [kg/m2/s]
|
|
|
+ & + ( 1.0 - zind1 ) * ( zind2 * ( 0.5 + zmt2 ) &
|
|
|
+ & + ( 1.0 - zind2 ) * zind3 * zmt3 ) )
|
|
|
+
|
|
|
+ !----------------------------------------------------!
|
|
|
+ ! fraction of net penetrative shortwave radiation !
|
|
|
+ !----------------------------------------------------!
|
|
|
+ ! fraction of qsr_ice which is NOT absorbed in the thin surface layer
|
|
|
+ ! and thus which penetrates inside the ice cover ( Maykut and Untersteiner, 1971 ; Elbert anbd Curry, 1993 )
|
|
|
+ fr1_i0(ji,jj) = 0.18 * ( 1.e0 - sf(jp_ccov)%fnow(ji,jj,1) ) + 0.35 * sf(jp_ccov)%fnow(ji,jj,1)
|
|
|
+ fr2_i0(ji,jj) = 0.82 * ( 1.e0 - sf(jp_ccov)%fnow(ji,jj,1) ) + 0.65 * sf(jp_ccov)%fnow(ji,jj,1)
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+ CALL iom_put( 'snowpre', sprecip ) ! Snow precipitation
|
|
|
+
|
|
|
+ !-----------------------------------------------------------!
|
|
|
+ ! snow/ice Shortwave radiation (abedo already computed) !
|
|
|
+ !-----------------------------------------------------------!
|
|
|
+ CALL blk_clio_qsr_ice( palb_cs, palb_os, qsr_ice )
|
|
|
+
|
|
|
+ DO jl = 1, jpl
|
|
|
+ palb(:,:,jl) = ( palb_cs(:,:,jl) * ( 1.e0 - sf(jp_ccov)%fnow(:,:,1) ) &
|
|
|
+ & + palb_os(:,:,jl) * sf(jp_ccov)%fnow(:,:,1) )
|
|
|
+ END DO
|
|
|
+
|
|
|
+ ! ! ========================== !
|
|
|
+ DO jl = 1, jpl ! Loop over ice categories !
|
|
|
+ ! ! ========================== !
|
|
|
+!CDIR NOVERRCHK
|
|
|
+!CDIR COLLAPSE
|
|
|
+ DO jj = 1 , jpj
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO ji = 1, jpi
|
|
|
+ !-------------------------------------------!
|
|
|
+ ! long-wave radiation over ice categories ! ( Berliand 1952 ; all latitudes )
|
|
|
+ !-------------------------------------------!
|
|
|
+ ztatm3 = ztatm(ji,jj) * ztatm(ji,jj) * ztatm(ji,jj)
|
|
|
+ zcldeff = 1.0 - sbudyko(ji,jj) * sf(jp_ccov)%fnow(ji,jj,1) * sf(jp_ccov)%fnow(ji,jj,1)
|
|
|
+ ztaevbk = ztatm3 * ztatm(ji,jj) * zcldeff * ( 0.39 - 0.05 * zevsqr(ji,jj) )
|
|
|
+ !
|
|
|
+ z_qlw(ji,jj,jl) = - emic * stefan * ( ztaevbk + 4. * ztatm3 * ( ptsu(ji,jj,jl) - ztatm(ji,jj) ) )
|
|
|
+
|
|
|
+ !----------------------------------------
|
|
|
+ ! Turbulent heat fluxes over snow/ice ( Latent and sensible )
|
|
|
+ !----------------------------------------
|
|
|
+
|
|
|
+ ! vapour pressure at saturation of ice (tmask to avoid overflow in the exponential)
|
|
|
+ zesi = 611.0 * EXP( 21.8745587 * tmask(ji,jj,1) * ( ptsu(ji,jj,jl) - rtt )/ ( ptsu(ji,jj,jl) - 7.66 ) )
|
|
|
+ ! humidity close to the ice surface (at saturation)
|
|
|
+ zqsati = ( 0.622 * zesi ) / ( zpatm - 0.378 * zesi )
|
|
|
+
|
|
|
+ ! computation of intermediate values
|
|
|
+ zticemb = ptsu(ji,jj,jl) - 7.66
|
|
|
+ zticemb2 = zticemb * zticemb
|
|
|
+ ztice3 = ptsu(ji,jj,jl) * ptsu(ji,jj,jl) * ptsu(ji,jj,jl)
|
|
|
+ zdesidt = zesi * ( 9.5 * LOG( 10.0 ) * ( rtt - 7.66 ) / zticemb2 )
|
|
|
+
|
|
|
+ ! Transfer cofficients assumed to be constant (Parkinson 1979 ; Maykut 1982)
|
|
|
+ zcshi = 1.75e-03
|
|
|
+ zclei = zcshi
|
|
|
+
|
|
|
+ ! sensible and latent fluxes over ice
|
|
|
+ zrhova = zrhoa(ji,jj) * sf(jp_wndm)%fnow(ji,jj,1) ! computation of intermediate values
|
|
|
+ zrhovaclei = zrhova * zcshi * 2.834e+06
|
|
|
+ zrhovacshi = zrhova * zclei * 1004.0
|
|
|
+
|
|
|
+ ! sensible heat flux
|
|
|
+ z_qsb(ji,jj,jl) = zrhovacshi * ( ptsu(ji,jj,jl) - ztatm(ji,jj) )
|
|
|
+
|
|
|
+ ! latent heat flux
|
|
|
+ qla_ice(ji,jj,jl) = MAX( 0.e0, zrhovaclei * ( zqsati - zqatm(ji,jj) ) )
|
|
|
+
|
|
|
+ ! sensitivity of non solar fluxes (dQ/dT) (long-wave, sensible and latent fluxes)
|
|
|
+ zdqlw = 4.0 * emic * stefan * ztice3
|
|
|
+ zdqsb = zrhovacshi
|
|
|
+ zdqla = zrhovaclei * ( zdesidt * ( zqsati * zqsati / ( zesi * zesi ) ) * ( zpatm / 0.622 ) )
|
|
|
+ !
|
|
|
+ dqla_ice(ji,jj,jl) = zdqla ! latent flux sensitivity
|
|
|
+ dqns_ice(ji,jj,jl) = -( zdqlw + zdqsb + zdqla ) ! total non solar sensitivity
|
|
|
+ END DO
|
|
|
+ !
|
|
|
+ END DO
|
|
|
+ !
|
|
|
+ END DO
|
|
|
+ !
|
|
|
+ ! ----------------------------------------------------------------------------- !
|
|
|
+ ! Total FLUXES !
|
|
|
+ ! ----------------------------------------------------------------------------- !
|
|
|
+ !
|
|
|
+!CDIR COLLAPSE
|
|
|
+ qns_ice(:,:,:) = z_qlw (:,:,:) - z_qsb (:,:,:) - qla_ice (:,:,:) ! Downward Non Solar flux
|
|
|
+!CDIR COLLAPSE
|
|
|
+ tprecip(:,:) = sf(jp_prec)%fnow(:,:,1) / rday ! total precipitation [kg/m2/s]
|
|
|
+ !
|
|
|
+ ! ----------------------------------------------------------------------------- !
|
|
|
+ ! Correct the OCEAN non solar flux with the existence of solid precipitation !
|
|
|
+ ! ---------------=====--------------------------------------------------------- !
|
|
|
+!CDIR COLLAPSE
|
|
|
+ qns(:,:) = qns(:,:) & ! update the non-solar heat flux with:
|
|
|
+ & - sprecip(:,:) * lfus & ! remove melting solid precip
|
|
|
+ & + sprecip(:,:) * MIN( sf(jp_tair)%fnow(:,:,1), rt0_snow - rt0 ) * cpic & ! add solid P at least below melting
|
|
|
+ & - sprecip(:,:) * sf(jp_tair)%fnow(:,:,1) * rcp ! remove solid precip. at Tair
|
|
|
+
|
|
|
+#if defined key_lim3
|
|
|
+ ! ----------------------------------------------------------------------------- !
|
|
|
+ ! Distribute evapo, precip & associated heat over ice and ocean
|
|
|
+ ! ---------------=====--------------------------------------------------------- !
|
|
|
+ CALL wrk_alloc( jpi,jpj, zevap, zsnw )
|
|
|
+
|
|
|
+ ! --- evaporation --- !
|
|
|
+ z1_lsub = 1._wp / Lsub
|
|
|
+ evap_ice (:,:,:) = qla_ice (:,:,:) * z1_lsub ! sublimation
|
|
|
+ devap_ice(:,:,:) = dqla_ice(:,:,:) * z1_lsub
|
|
|
+ zevap (:,:) = emp(:,:) + tprecip(:,:) ! evaporation over ocean
|
|
|
+
|
|
|
+ ! --- evaporation minus precipitation --- !
|
|
|
+ zsnw(:,:) = 0._wp
|
|
|
+ CALL lim_thd_snwblow( pfrld, zsnw ) ! snow redistribution by wind
|
|
|
+ emp_oce(:,:) = pfrld(:,:) * zevap(:,:) - ( tprecip(:,:) - sprecip(:,:) ) - sprecip(:,:) * ( 1._wp - zsnw )
|
|
|
+ emp_ice(:,:) = SUM( a_i_b(:,:,:) * evap_ice(:,:,:), dim=3 ) - sprecip(:,:) * zsnw
|
|
|
+ emp_tot(:,:) = emp_oce(:,:) + emp_ice(:,:)
|
|
|
+
|
|
|
+ ! --- heat flux associated with emp --- !
|
|
|
+ qemp_oce(:,:) = - pfrld(:,:) * zevap(:,:) * sst_m(:,:) * rcp & ! evap
|
|
|
+ & + ( tprecip(:,:) - sprecip(:,:) ) * ( sf(jp_tair)%fnow(:,:,1) - rt0 ) * rcp & ! liquid precip
|
|
|
+ & + sprecip(:,:) * ( 1._wp - zsnw ) * & ! solid precip
|
|
|
+ & ( ( MIN( sf(jp_tair)%fnow(:,:,1), rt0_snow ) - rt0 ) * cpic * tmask(:,:,1) - lfus )
|
|
|
+ qemp_ice(:,:) = sprecip(:,:) * zsnw * & ! solid precip (only)
|
|
|
+ & ( ( MIN( sf(jp_tair)%fnow(:,:,1), rt0_snow ) - rt0 ) * cpic * tmask(:,:,1) - lfus )
|
|
|
+
|
|
|
+ ! --- total solar and non solar fluxes --- !
|
|
|
+ qns_tot(:,:) = pfrld(:,:) * qns_oce(:,:) + SUM( a_i_b(:,:,:) * qns_ice(:,:,:), dim=3 ) + qemp_ice(:,:) + qemp_oce(:,:)
|
|
|
+ qsr_tot(:,:) = pfrld(:,:) * qsr_oce(:,:) + SUM( a_i_b(:,:,:) * qsr_ice(:,:,:), dim=3 )
|
|
|
+
|
|
|
+ ! --- heat content of precip over ice in J/m3 (to be used in 1D-thermo) --- !
|
|
|
+ qprec_ice(:,:) = rhosn * ( ( MIN( sf(jp_tair)%fnow(:,:,1), rt0_snow ) - rt0 ) * cpic * tmask(:,:,1) - lfus )
|
|
|
+
|
|
|
+ ! --- heat content of evap over ice in W/m2 (to be used in 1D-thermo) --- !
|
|
|
+ DO jl = 1, jpl
|
|
|
+ qevap_ice(:,:,jl) = 0._wp ! should be -evap_ice(:,:,jl)*( ( Tice - rt0 ) * cpic * tmask(:,:,1) - lfus )
|
|
|
+ ! but then qemp_ice should also include sublimation
|
|
|
+ END DO
|
|
|
+
|
|
|
+ CALL wrk_dealloc( jpi,jpj, zevap, zsnw )
|
|
|
+#endif
|
|
|
+
|
|
|
+!!gm : not necessary as all input data are lbc_lnk...
|
|
|
+ CALL lbc_lnk( fr1_i0 (:,:) , 'T', 1. )
|
|
|
+ CALL lbc_lnk( fr2_i0 (:,:) , 'T', 1. )
|
|
|
+ DO jl = 1, jpl
|
|
|
+ CALL lbc_lnk( qns_ice (:,:,jl) , 'T', 1. )
|
|
|
+ CALL lbc_lnk( dqns_ice(:,:,jl) , 'T', 1. )
|
|
|
+ CALL lbc_lnk( qla_ice (:,:,jl) , 'T', 1. )
|
|
|
+ CALL lbc_lnk( dqla_ice(:,:,jl) , 'T', 1. )
|
|
|
+ END DO
|
|
|
+
|
|
|
+!!gm : mask is not required on forcing
|
|
|
+ DO jl = 1, jpl
|
|
|
+ qns_ice (:,:,jl) = qns_ice (:,:,jl) * tmask(:,:,1)
|
|
|
+ qla_ice (:,:,jl) = qla_ice (:,:,jl) * tmask(:,:,1)
|
|
|
+ dqns_ice(:,:,jl) = dqns_ice(:,:,jl) * tmask(:,:,1)
|
|
|
+ dqla_ice(:,:,jl) = dqla_ice(:,:,jl) * tmask(:,:,1)
|
|
|
+ END DO
|
|
|
+
|
|
|
+ CALL wrk_dealloc( jpi,jpj, ztatm, zqatm, zevsqr, zrhoa )
|
|
|
+ CALL wrk_dealloc( jpi,jpj, jpl , z_qlw, z_qsb )
|
|
|
+
|
|
|
+ IF(ln_ctl) THEN
|
|
|
+ CALL prt_ctl(tab3d_1=z_qsb , clinfo1=' blk_ice_clio: z_qsb : ', tab3d_2=z_qlw , clinfo2=' z_qlw : ', kdim=jpl)
|
|
|
+ CALL prt_ctl(tab3d_1=qla_ice , clinfo1=' blk_ice_clio: z_qla : ', tab3d_2=qsr_ice , clinfo2=' qsr_ice : ', kdim=jpl)
|
|
|
+ CALL prt_ctl(tab3d_1=dqns_ice , clinfo1=' blk_ice_clio: dqns_ice : ', tab3d_2=qns_ice , clinfo2=' qns_ice : ', kdim=jpl)
|
|
|
+ CALL prt_ctl(tab3d_1=dqla_ice , clinfo1=' blk_ice_clio: dqla_ice : ', tab3d_2=ptsu , clinfo2=' ptsu : ', kdim=jpl)
|
|
|
+ CALL prt_ctl(tab2d_1=tprecip , clinfo1=' blk_ice_clio: tprecip : ', tab2d_2=sprecip , clinfo2=' sprecip : ')
|
|
|
+ ENDIF
|
|
|
+
|
|
|
+ IF( nn_timing == 1 ) CALL timing_stop('blk_ice_clio_flx')
|
|
|
+ !
|
|
|
+ END SUBROUTINE blk_ice_clio_flx
|
|
|
+
|
|
|
+#endif
|
|
|
+
|
|
|
+ SUBROUTINE blk_clio_qsr_oce( pqsr_oce )
|
|
|
+ !!---------------------------------------------------------------------------
|
|
|
+ !! *** ROUTINE blk_clio_qsr_oce ***
|
|
|
+ !!
|
|
|
+ !! ** Purpose : Computation of the shortwave radiation at the ocean and the
|
|
|
+ !! snow/ice surfaces.
|
|
|
+ !!
|
|
|
+ !! ** Method : - computed qsr from the cloud cover for both ice and ocean
|
|
|
+ !! - also initialise sbudyko and stauc once for all
|
|
|
+ !!----------------------------------------------------------------------
|
|
|
+ REAL(wp), INTENT( out), DIMENSION(jpi,jpj) :: pqsr_oce ! shortwave radiation over the ocean
|
|
|
+ !!
|
|
|
+ INTEGER, PARAMETER :: jp24 = 24 ! sampling of the daylight period (sunrise to sunset) into 24 equal parts
|
|
|
+ !!
|
|
|
+ INTEGER :: ji, jj, jt ! dummy loop indices
|
|
|
+ INTEGER :: indaet ! = -1, 0, 1 for odd, normal and leap years resp.
|
|
|
+ INTEGER :: iday ! integer part of day
|
|
|
+ INTEGER :: indxb, indxc ! index for cloud depth coefficient
|
|
|
+
|
|
|
+ REAL(wp) :: zalat , zclat, zcmue, zcmue2 ! local scalars
|
|
|
+ REAL(wp) :: zmt1, zmt2, zmt3 !
|
|
|
+ REAL(wp) :: zdecl, zsdecl , zcdecl !
|
|
|
+ REAL(wp) :: za_oce, ztamr !
|
|
|
+
|
|
|
+ REAL(wp) :: zdl, zlha ! local scalars
|
|
|
+ REAL(wp) :: zlmunoon, zcldcor, zdaycor !
|
|
|
+ REAL(wp) :: zxday, zdist, zcoef, zcoef1 !
|
|
|
+ REAL(wp) :: zes
|
|
|
+
|
|
|
+ REAL(wp), DIMENSION(:,:), POINTER :: zev ! vapour pressure
|
|
|
+ REAL(wp), DIMENSION(:,:), POINTER :: zdlha, zlsrise, zlsset ! 2D workspace
|
|
|
+ REAL(wp), DIMENSION(:,:), POINTER :: zps, zpc ! sine (cosine) of latitude per sine (cosine) of solar declination
|
|
|
+ !!---------------------------------------------------------------------
|
|
|
+ !
|
|
|
+ IF( nn_timing == 1 ) CALL timing_start('blk_clio_qsr_oce')
|
|
|
+ !
|
|
|
+ CALL wrk_alloc( jpi,jpj, zev, zdlha, zlsrise, zlsset, zps, zpc )
|
|
|
+
|
|
|
+ IF( lbulk_init ) THEN ! Initilization at first time step only
|
|
|
+ rdtbs2 = nn_fsbc * rdt * 0.5
|
|
|
+ ! cloud optical depths as a function of latitude (Chou et al., 1981).
|
|
|
+ ! and the correction factor for taking into account the effect of clouds
|
|
|
+ DO jj = 1, jpj
|
|
|
+ DO ji = 1 , jpi
|
|
|
+ zalat = ( 90.e0 - ABS( gphit(ji,jj) ) ) / 5.e0
|
|
|
+ zclat = ( 95.e0 - gphit(ji,jj) ) / 10.e0
|
|
|
+ indxb = 1 + INT( zalat )
|
|
|
+ indxc = 1 + INT( zclat )
|
|
|
+ zdl = zclat - INT( zclat )
|
|
|
+ ! correction factor to account for the effect of clouds
|
|
|
+ sbudyko(ji,jj) = budyko(indxb)
|
|
|
+ stauc (ji,jj) = ( 1.e0 - zdl ) * tauco( indxc ) + zdl * tauco( indxc + 1 )
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+ lbulk_init = .FALSE.
|
|
|
+ ENDIF
|
|
|
+
|
|
|
+
|
|
|
+ ! Saturated water vapour and vapour pressure
|
|
|
+ ! ------------------------------------------
|
|
|
+!CDIR NOVERRCHK
|
|
|
+!CDIR COLLAPSE
|
|
|
+ DO jj = 1, jpj
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO ji = 1, jpi
|
|
|
+ ztamr = sf(jp_tair)%fnow(ji,jj,1) - rtt
|
|
|
+ zmt1 = SIGN( 17.269, ztamr )
|
|
|
+ zmt2 = SIGN( 21.875, ztamr )
|
|
|
+ zmt3 = SIGN( 28.200, -ztamr )
|
|
|
+ zes = 611.0 * EXP( ABS( ztamr ) * MIN ( zmt1, zmt2 ) & ! Saturation water vapour
|
|
|
+ & / ( sf(jp_tair)%fnow(ji,jj,1) - 35.86 + MAX( 0.e0, zmt3 ) ) )
|
|
|
+ zev(ji,jj) = sf(jp_humi)%fnow(ji,jj,1) * zes * 1.0e-05 ! vapour pressure
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+
|
|
|
+ !-----------------------------------!
|
|
|
+ ! Computation of solar irradiance !
|
|
|
+ !-----------------------------------!
|
|
|
+!!gm : hard coded leap year ???
|
|
|
+ indaet = 1 ! = -1, 0, 1 for odd, normal and leap years resp.
|
|
|
+ zxday = nday_year + rdtbs2 / rday ! day of the year at which the fluxes are calculated
|
|
|
+ iday = INT( zxday ) ! (centred at the middle of the ice time step)
|
|
|
+ CALL flx_blk_declin( indaet, iday, zdecl ) ! solar declination of the current day
|
|
|
+ zsdecl = SIN( zdecl * rad ) ! its sine
|
|
|
+ zcdecl = COS( zdecl * rad ) ! its cosine
|
|
|
+
|
|
|
+
|
|
|
+ ! correction factor added for computation of shortwave flux to take into account the variation of
|
|
|
+ ! the distance between the sun and the earth during the year (Oberhuber 1988)
|
|
|
+ zdist = zxday * 2. * rpi / REAL(nyear_len(1), wp)
|
|
|
+ zdaycor = 1.0 + 0.0013 * SIN( zdist ) + 0.0342 * COS( zdist )
|
|
|
+
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO jj = 1, jpj
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO ji = 1, jpi
|
|
|
+ ! product of sine (cosine) of latitude and sine (cosine) of solar declination
|
|
|
+ zps(ji,jj) = SIN( gphit(ji,jj) * rad ) * zsdecl
|
|
|
+ zpc(ji,jj) = COS( gphit(ji,jj) * rad ) * zcdecl
|
|
|
+ ! computation of the both local time of sunrise and sunset
|
|
|
+ zlsrise(ji,jj) = ACOS( - SIGN( 1.e0, zps(ji,jj) ) &
|
|
|
+ & * MIN( 1.e0, SIGN( 1.e0, zps(ji,jj) ) * ( zps(ji,jj) / zpc(ji,jj) ) ) )
|
|
|
+ zlsset (ji,jj) = - zlsrise(ji,jj)
|
|
|
+ ! dividing the solar day into jp24 segments of length zdlha
|
|
|
+ zdlha (ji,jj) = ( zlsrise(ji,jj) - zlsset(ji,jj) ) / REAL( jp24, wp )
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+
|
|
|
+
|
|
|
+ !---------------------------------------------!
|
|
|
+ ! shortwave radiation absorbed by the ocean !
|
|
|
+ !---------------------------------------------!
|
|
|
+ pqsr_oce(:,:) = 0.e0 ! set ocean qsr to zero
|
|
|
+
|
|
|
+ ! compute and sum ocean qsr over the daylight (i.e. between sunrise and sunset)
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO jt = 1, jp24
|
|
|
+ zcoef = FLOAT( jt ) - 0.5
|
|
|
+!CDIR NOVERRCHK
|
|
|
+!CDIR COLLAPSE
|
|
|
+ DO jj = 1, jpj
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO ji = 1, jpi
|
|
|
+ zlha = COS( zlsrise(ji,jj) - zcoef * zdlha(ji,jj) ) ! local hour angle
|
|
|
+ zcmue = MAX( 0.e0 , zps(ji,jj) + zpc(ji,jj) * zlha ) ! cos of local solar altitude
|
|
|
+ zcmue2 = 1368.0 * zcmue * zcmue
|
|
|
+
|
|
|
+ ! ocean albedo depending on the cloud cover (Payne, 1972)
|
|
|
+ za_oce = ( 1.0 - sf(jp_ccov)%fnow(ji,jj,1) ) * 0.05 / ( 1.1 * zcmue**1.4 + 0.15 ) & ! clear sky
|
|
|
+ & + sf(jp_ccov)%fnow(ji,jj,1) * 0.06 ! overcast
|
|
|
+
|
|
|
+ ! solar heat flux absorbed by the ocean (Zillman, 1972)
|
|
|
+ pqsr_oce(ji,jj) = pqsr_oce(ji,jj) &
|
|
|
+ & + ( 1.0 - za_oce ) * zdlha(ji,jj) * zcmue2 &
|
|
|
+ & / ( ( zcmue + 2.7 ) * zev(ji,jj) + 1.085 * zcmue + 0.10 )
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+ ! Taking into account the ellipsity of the earth orbit, the clouds AND masked if sea-ice cover > 0%
|
|
|
+ zcoef1 = srgamma * zdaycor / ( 2. * rpi )
|
|
|
+!CDIR COLLAPSE
|
|
|
+ DO jj = 1, jpj
|
|
|
+ DO ji = 1, jpi
|
|
|
+ zlmunoon = ASIN( zps(ji,jj) + zpc(ji,jj) ) / rad ! local noon solar altitude
|
|
|
+ zcldcor = MIN( 1.e0, ( 1.e0 - 0.62 * sf(jp_ccov)%fnow(ji,jj,1) & ! cloud correction (Reed 1977)
|
|
|
+ & + 0.0019 * zlmunoon ) )
|
|
|
+ pqsr_oce(ji,jj) = zcoef1 * zcldcor * pqsr_oce(ji,jj) * tmask(ji,jj,1) ! and zcoef1: ellipsity
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+
|
|
|
+ CALL wrk_dealloc( jpi,jpj, zev, zdlha, zlsrise, zlsset, zps, zpc )
|
|
|
+ !
|
|
|
+ IF( nn_timing == 1 ) CALL timing_stop('blk_clio_qsr_oce')
|
|
|
+ !
|
|
|
+ END SUBROUTINE blk_clio_qsr_oce
|
|
|
+
|
|
|
+
|
|
|
+ SUBROUTINE blk_clio_qsr_ice( pa_ice_cs, pa_ice_os, pqsr_ice )
|
|
|
+ !!---------------------------------------------------------------------------
|
|
|
+ !! *** ROUTINE blk_clio_qsr_ice ***
|
|
|
+ !!
|
|
|
+ !! ** Purpose : Computation of the shortwave radiation at the ocean and the
|
|
|
+ !! snow/ice surfaces.
|
|
|
+ !!
|
|
|
+ !! ** Method : - computed qsr from the cloud cover for both ice and ocean
|
|
|
+ !! - also initialise sbudyko and stauc once for all
|
|
|
+ !!----------------------------------------------------------------------
|
|
|
+ REAL(wp), INTENT(in ), DIMENSION(:,:,:) :: pa_ice_cs ! albedo of ice under clear sky
|
|
|
+ REAL(wp), INTENT(in ), DIMENSION(:,:,:) :: pa_ice_os ! albedo of ice under overcast sky
|
|
|
+ REAL(wp), INTENT( out), DIMENSION(:,:,:) :: pqsr_ice ! shortwave radiation over the ice/snow
|
|
|
+ !!
|
|
|
+ INTEGER, PARAMETER :: jp24 = 24 ! sampling of the daylight period (sunrise to sunset) into 24 equal parts
|
|
|
+ !!
|
|
|
+ INTEGER :: ji, jj, jl, jt ! dummy loop indices
|
|
|
+ INTEGER :: ijpl ! number of ice categories (3rd dim of pqsr_ice)
|
|
|
+ INTEGER :: indaet ! = -1, 0, 1 for odd, normal and leap years resp.
|
|
|
+ INTEGER :: iday ! integer part of day
|
|
|
+ !!
|
|
|
+ REAL(wp) :: zcmue, zcmue2, ztamr ! temporary scalars
|
|
|
+ REAL(wp) :: zmt1, zmt2, zmt3 ! - -
|
|
|
+ REAL(wp) :: zdecl, zsdecl, zcdecl ! - -
|
|
|
+ REAL(wp) :: zlha, zdaycor, zes ! - -
|
|
|
+ REAL(wp) :: zxday, zdist, zcoef, zcoef1 ! - -
|
|
|
+ REAL(wp) :: zqsr_ice_cs, zqsr_ice_os ! - -
|
|
|
+
|
|
|
+ REAL(wp), DIMENSION(:,:), POINTER :: zev ! vapour pressure
|
|
|
+ REAL(wp), DIMENSION(:,:), POINTER :: zdlha, zlsrise, zlsset ! 2D workspace
|
|
|
+ REAL(wp), DIMENSION(:,:), POINTER :: zps, zpc ! sine (cosine) of latitude per sine (cosine) of solar declination
|
|
|
+ !!---------------------------------------------------------------------
|
|
|
+ !
|
|
|
+ IF( nn_timing == 1 ) CALL timing_start('blk_clio_qsr_ice')
|
|
|
+ !
|
|
|
+ CALL wrk_alloc( jpi,jpj, zev, zdlha, zlsrise, zlsset, zps, zpc )
|
|
|
+
|
|
|
+ ijpl = SIZE(pqsr_ice, 3 ) ! number of ice categories
|
|
|
+
|
|
|
+ ! Saturated water vapour and vapour pressure
|
|
|
+ ! ------------------------------------------
|
|
|
+!CDIR NOVERRCHK
|
|
|
+!CDIR COLLAPSE
|
|
|
+ DO jj = 1, jpj
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO ji = 1, jpi
|
|
|
+ ztamr = sf(jp_tair)%fnow(ji,jj,1) - rtt
|
|
|
+ zmt1 = SIGN( 17.269, ztamr )
|
|
|
+ zmt2 = SIGN( 21.875, ztamr )
|
|
|
+ zmt3 = SIGN( 28.200, -ztamr )
|
|
|
+ zes = 611.0 * EXP( ABS( ztamr ) * MIN ( zmt1, zmt2 ) & ! Saturation water vapour
|
|
|
+ & / ( sf(jp_tair)%fnow(ji,jj,1) - 35.86 + MAX( 0.e0, zmt3 ) ) )
|
|
|
+ zev(ji,jj) = sf(jp_humi)%fnow(ji,jj,1) * zes * 1.0e-05 ! vapour pressure
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+
|
|
|
+ !-----------------------------------!
|
|
|
+ ! Computation of solar irradiance !
|
|
|
+ !-----------------------------------!
|
|
|
+!!gm : hard coded leap year ???
|
|
|
+ indaet = 1 ! = -1, 0, 1 for odd, normal and leap years resp.
|
|
|
+ zxday = nday_year + rdtbs2 / rday ! day of the year at which the fluxes are calculated
|
|
|
+ iday = INT( zxday ) ! (centred at the middle of the ice time step)
|
|
|
+ CALL flx_blk_declin( indaet, iday, zdecl ) ! solar declination of the current day
|
|
|
+ zsdecl = SIN( zdecl * rad ) ! its sine
|
|
|
+ zcdecl = COS( zdecl * rad ) ! its cosine
|
|
|
+
|
|
|
+
|
|
|
+ ! correction factor added for computation of shortwave flux to take into account the variation of
|
|
|
+ ! the distance between the sun and the earth during the year (Oberhuber 1988)
|
|
|
+ zdist = zxday * 2. * rpi / REAL(nyear_len(1), wp)
|
|
|
+ zdaycor = 1.0 + 0.0013 * SIN( zdist ) + 0.0342 * COS( zdist )
|
|
|
+
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO jj = 1, jpj
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO ji = 1, jpi
|
|
|
+ ! product of sine (cosine) of latitude and sine (cosine) of solar declination
|
|
|
+ zps(ji,jj) = SIN( gphit(ji,jj) * rad ) * zsdecl
|
|
|
+ zpc(ji,jj) = COS( gphit(ji,jj) * rad ) * zcdecl
|
|
|
+ ! computation of the both local time of sunrise and sunset
|
|
|
+ zlsrise(ji,jj) = ACOS( - SIGN( 1.e0, zps(ji,jj) ) &
|
|
|
+ & * MIN( 1.e0, SIGN( 1.e0, zps(ji,jj) ) * ( zps(ji,jj) / zpc(ji,jj) ) ) )
|
|
|
+ zlsset (ji,jj) = - zlsrise(ji,jj)
|
|
|
+ ! dividing the solar day into jp24 segments of length zdlha
|
|
|
+ zdlha (ji,jj) = ( zlsrise(ji,jj) - zlsset(ji,jj) ) / REAL( jp24, wp )
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+
|
|
|
+
|
|
|
+ !---------------------------------------------!
|
|
|
+ ! shortwave radiation absorbed by the ice !
|
|
|
+ !---------------------------------------------!
|
|
|
+ ! compute and sum ice qsr over the daylight for each ice categories
|
|
|
+ pqsr_ice(:,:,:) = 0.e0
|
|
|
+ zcoef1 = zdaycor / ( 2. * rpi ) ! Correction for the ellipsity of the earth orbit
|
|
|
+
|
|
|
+ ! !----------------------------!
|
|
|
+ DO jl = 1, ijpl ! loop over ice categories !
|
|
|
+ ! !----------------------------!
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO jt = 1, jp24
|
|
|
+ zcoef = FLOAT( jt ) - 0.5
|
|
|
+!CDIR NOVERRCHK
|
|
|
+!CDIR COLLAPSE
|
|
|
+ DO jj = 1, jpj
|
|
|
+!CDIR NOVERRCHK
|
|
|
+ DO ji = 1, jpi
|
|
|
+ zlha = COS( zlsrise(ji,jj) - zcoef * zdlha(ji,jj) ) ! local hour angle
|
|
|
+ zcmue = MAX( 0.e0 , zps(ji,jj) + zpc(ji,jj) * zlha ) ! cos of local solar altitude
|
|
|
+ zcmue2 = 1368.0 * zcmue * zcmue
|
|
|
+
|
|
|
+ ! solar heat flux absorbed by the ice/snow system (Shine and Crane 1984 adapted to high albedo)
|
|
|
+ zqsr_ice_cs = ( 1.0 - pa_ice_cs(ji,jj,jl) ) * zdlha(ji,jj) * zcmue2 & ! clear sky
|
|
|
+ & / ( ( 1.0 + zcmue ) * zev(ji,jj) + 1.2 * zcmue + 0.0455 )
|
|
|
+ zqsr_ice_os = zdlha(ji,jj) * SQRT( zcmue ) & ! overcast sky
|
|
|
+ & * ( 53.5 + 1274.5 * zcmue ) * ( 1.0 - 0.996 * pa_ice_os(ji,jj,jl) ) &
|
|
|
+ & / ( 1.0 + 0.139 * stauc(ji,jj) * ( 1.0 - 0.9435 * pa_ice_os(ji,jj,jl) ) )
|
|
|
+
|
|
|
+ pqsr_ice(ji,jj,jl) = pqsr_ice(ji,jj,jl) + ( ( 1.0 - sf(jp_ccov)%fnow(ji,jj,1) ) * zqsr_ice_cs &
|
|
|
+ & + sf(jp_ccov)%fnow(ji,jj,1) * zqsr_ice_os )
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+ END DO
|
|
|
+ !
|
|
|
+ ! Correction : Taking into account the ellipsity of the earth orbit
|
|
|
+ pqsr_ice(:,:,jl) = pqsr_ice(:,:,jl) * zcoef1 * tmask(:,:,1)
|
|
|
+ !
|
|
|
+ ! !--------------------------------!
|
|
|
+ END DO ! end loop over ice categories !
|
|
|
+ ! !--------------------------------!
|
|
|
+
|
|
|
+
|
|
|
+!!gm : this should be suppress as input data have been passed through lbc_lnk
|
|
|
+ DO jl = 1, ijpl
|
|
|
+ CALL lbc_lnk( pqsr_ice(:,:,jl) , 'T', 1. )
|
|
|
+ END DO
|
|
|
+ !
|
|
|
+ CALL wrk_dealloc( jpi,jpj, zev, zdlha, zlsrise, zlsset, zps, zpc )
|
|
|
+ !
|
|
|
+ IF( nn_timing == 1 ) CALL timing_stop('blk_clio_qsr_ice')
|
|
|
+ !
|
|
|
+ END SUBROUTINE blk_clio_qsr_ice
|
|
|
+
|
|
|
+
|
|
|
+ SUBROUTINE flx_blk_declin( ky, kday, pdecl )
|
|
|
+ !!---------------------------------------------------------------------------
|
|
|
+ !! *** ROUTINE flx_blk_declin ***
|
|
|
+ !!
|
|
|
+ !! ** Purpose : Computation of the solar declination for the day
|
|
|
+ !!
|
|
|
+ !! ** Method : ???
|
|
|
+ !!---------------------------------------------------------------------
|
|
|
+ INTEGER , INTENT(in ) :: ky ! = -1, 0, 1 for odd, normal and leap years resp.
|
|
|
+ INTEGER , INTENT(in ) :: kday ! day of the year ( kday = 1 on january 1)
|
|
|
+ REAL(wp), INTENT( out) :: pdecl ! solar declination
|
|
|
+ !!
|
|
|
+ REAL(wp) :: a0 = 0.39507671 ! coefficients for solar declinaison computation
|
|
|
+ REAL(wp) :: a1 = 22.85684301 ! " "" "
|
|
|
+ REAL(wp) :: a2 = -0.38637317 ! " "" "
|
|
|
+ REAL(wp) :: a3 = 0.15096535 ! " "" "
|
|
|
+ REAL(wp) :: a4 = -0.00961411 ! " "" "
|
|
|
+ REAL(wp) :: b1 = -4.29692073 ! " "" "
|
|
|
+ REAL(wp) :: b2 = 0.05702074 ! " "" "
|
|
|
+ REAL(wp) :: b3 = -0.09028607 ! " "" "
|
|
|
+ REAL(wp) :: b4 = 0.00592797
|
|
|
+ !!
|
|
|
+ REAL(wp) :: zday ! corresponding day of type year (cf. ky)
|
|
|
+ REAL(wp) :: zp ! temporary scalars
|
|
|
+ !!---------------------------------------------------------------------
|
|
|
+
|
|
|
+ IF ( ky == 1 ) THEN ; zday = REAL( kday, wp ) - 0.5
|
|
|
+ ELSEIF( ky == 3 ) THEN ; zday = REAL( kday, wp ) - 1.
|
|
|
+ ELSE ; zday = REAL( kday, wp )
|
|
|
+ ENDIF
|
|
|
+
|
|
|
+ zp = rpi * ( 2.0 * zday - 367.0 ) / REAL(nyear_len(1), wp)
|
|
|
+
|
|
|
+ pdecl = a0 &
|
|
|
+ & + a1 * COS( zp ) + a2 * COS( 2. * zp ) + a3 * COS( 3. * zp ) + a4 * COS( 4. * zp ) &
|
|
|
+ & + b1 * SIN( zp ) + b2 * SIN( 2. * zp ) + b3 * SIN( 3. * zp ) + b4 * SIN( 4. * zp )
|
|
|
+ !
|
|
|
+ END SUBROUTINE flx_blk_declin
|
|
|
+
|
|
|
+ !!======================================================================
|
|
|
+END MODULE sbcblk_clio
|
