122 lines
5.1 KiB
Fortran
Executable File
122 lines
5.1 KiB
Fortran
Executable File
MODULE usrdef_sbc
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!!======================================================================
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!! *** MODULE usrdef_sbc ***
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!!
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!! === SWG configuration ===
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!!
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!! User defined : surface forcing of a user configuration
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!!======================================================================
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!! History : 4.0 ! 2016-03 (S. Flavoni, G. Madec) user defined interface
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!! - ! 2020-03 (A. Nasser) Shallow Water Eq. configuration
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!!----------------------------------------------------------------------
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!!----------------------------------------------------------------------
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!! usrdef_sbc : user defined surface bounday conditions in GYRE case
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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 sbc_oce ! Surface boundary condition: ocean fields
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USE phycst ! physical constants
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USE usrdef_nam
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!
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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 lbclnk ! ocean lateral boundary conditions (or mpp link)
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USE lib_fortran ! Fortran library
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IMPLICIT NONE
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PRIVATE
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PUBLIC usrdef_sbc_oce ! routine called in sbcmod module
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PUBLIC usrdef_sbc_ice_tau ! routine called by icestp.F90 for ice dynamics
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PUBLIC usrdef_sbc_ice_flx ! routine called by icestp.F90 for ice thermo
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!! * Substitutions
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# include "do_loop_substitute.h90"
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!!----------------------------------------------------------------------
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!! NEMO/OCE 4.0 , NEMO Consortium (2018)
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!! $Id: usrdef_sbc.F90 10425 2018-12-19 21:54:16Z smasson $
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!! Software governed by the CeCILL license (see ./LICENSE)
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!!----------------------------------------------------------------------
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CONTAINS
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SUBROUTINE usrdef_sbc_oce( kt, Kbb )
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!!---------------------------------------------------------------------
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!! *** ROUTINE usrdef_sbc_oce ***
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!!
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!! ** Purpose : provide at each time-step the GYRE surface boundary
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!! condition, i.e. the momentum, heat and freshwater fluxes.
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!!
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!! ** Method : analytical seasonal cycle for GYRE configuration.
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!! CAUTION : never mask the surface stress field !
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!!
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!! ** Action : - set the ocean surface boundary condition, i.e.
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!! utau, vtau, taum, wndm, qns, qsr, emp, sfx
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!!
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!!----------------------------------------------------------------------
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INTEGER, INTENT(in) :: kt ! ocean time step
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INTEGER, INTENT(in) :: Kbb ! ocean time index
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!!
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INTEGER :: ji, jj ! dummy loop indices
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REAL(wp) :: ztauu, ztauv ! wind intensity projeted
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REAL(wp) :: zrhoa = 1.22 ! Air density kg/m3
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REAL(wp) :: zcdrag = 1.5e-3 ! drag coefficient
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REAL(wp) :: ztx, zty, zmod, zcoef ! temporary variables
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!!---------------------------------------------------------------------
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! ---------------------------- !
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! heat and freshwater fluxes ! (no fluxes)
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! ---------------------------- !
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emp (:,:) = 0._wp
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sfx (:,:) = 0._wp
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qns (:,:) = 0._wp
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qsr (:,:) = 0._wp
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! ---------------------------- !
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! momentum fluxes !
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! ---------------------------- !
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! rotated case (45deg)
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! ztauu = 0.2_wp / SQRT( 2._wp ) ! N.m-2
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! ztauv = 0.2_wp / SQRT( 2._wp) ! N.m-2
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! non rotated
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!ztauu = 0.2_wp ! N.m-2
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!ztauv = 0._wp ! N.m-2
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! general case
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ztauu = REAL( rn_tau, wp ) * COS( rn_theta * rad ) ! N.m-2
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ztauv = - REAL( rn_tau, wp ) * SIN( rn_theta * rad ) ! N.m-2
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DO_2D( nn_hls, nn_hls, nn_hls, nn_hls )
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! length of the domain : 2000km x 2000km
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utau(ji,jj) = - ztauu * COS( rpi * gphiu(ji,jj) / 2000000._wp)
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vtau(ji,jj) = - ztauv * COS( rpi * gphiv(ji,jj) / 2000000._wp)
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END_2D
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! module of wind stress and wind speed at T-point
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zcoef = 1. / ( zrhoa * zcdrag )
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DO_2D( 0, 0, 0, 0 )
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ztx = utau(ji-1,jj ) + utau(ji,jj)
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zty = vtau(ji ,jj-1) + vtau(ji,jj)
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zmod = 0.5 * SQRT( ztx * ztx + zty * zty )
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taum(ji,jj) = zmod
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wndm(ji,jj) = SQRT( zmod * zcoef )
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END_2D
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CALL lbc_lnk( 'usrdef_sbc', taum(:,:), 'T', 1._wp , wndm(:,:), 'T', 1._wp )
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!
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END SUBROUTINE usrdef_sbc_oce
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SUBROUTINE usrdef_sbc_ice_tau( kt )
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INTEGER, INTENT(in) :: kt ! ocean time step
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END SUBROUTINE usrdef_sbc_ice_tau
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SUBROUTINE usrdef_sbc_ice_flx( kt, phs, phi )
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INTEGER, INTENT(in) :: kt ! ocean time step
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REAL(wp), DIMENSION(:,:,:), INTENT(in) :: phs ! snow thickness
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REAL(wp), DIMENSION(:,:,:), INTENT(in) :: phi ! ice thickness
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END SUBROUTINE usrdef_sbc_ice_flx
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!!======================================================================
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END MODULE usrdef_sbc
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