167 lines
8.2 KiB
Fortran
Executable File
167 lines
8.2 KiB
Fortran
Executable File
MODULE usrdef_zgr
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!!======================================================================
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!! *** MODULE usrdef_zgr ***
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!!
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!! === LOCK_EXCHANGE case ===
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!!
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!! Ocean domain : user defined vertical coordinate system
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!!======================================================================
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!! History : 4.0 ! 2016-08 (G. Madec, S. Flavoni) Original code
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!!----------------------------------------------------------------------
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!!----------------------------------------------------------------------
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!! usr_def_zgr : user defined vertical coordinate system (required)
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!! zgr_z1d : reference 1D z-coordinate
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!!---------------------------------------------------------------------
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USE oce ! ocean variables
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USE usrdef_nam ! User defined : namelist variables
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!
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USE in_out_manager ! I/O manager
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USE lbclnk ! ocean lateral boundary conditions (or mpp link)
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USE lib_mpp ! distributed memory computing library
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USE timing ! Timing
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IMPLICIT NONE
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PRIVATE
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PUBLIC usr_def_zgr ! called by domzgr.F90
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!!----------------------------------------------------------------------
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!! NEMO/OCE 4.0 , NEMO Consortium (2018)
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!! $Id: usrdef_zgr.F90 14433 2021-02-11 08:06:49Z 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 usr_def_zgr( ld_zco , ld_zps , ld_sco , ld_isfcav, & ! type of vertical coordinate
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& pdept_1d, pdepw_1d, pe3t_1d , pe3w_1d , & ! 1D reference vertical coordinate
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& pdept , pdepw , & ! 3D t & w-points depth
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& pe3t , pe3u , pe3v , pe3f , & ! vertical scale factors
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& pe3w , pe3uw , pe3vw, & ! - - -
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& k_top , k_bot ) ! top & bottom ocean level
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!!---------------------------------------------------------------------
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!! *** ROUTINE usr_def_zgr ***
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!!
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!! ** Purpose : User defined the vertical coordinates
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!!
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!!----------------------------------------------------------------------
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LOGICAL , INTENT(out) :: ld_zco, ld_zps, ld_sco ! vertical coordinate flags
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LOGICAL , INTENT(out) :: ld_isfcav ! under iceshelf cavity flag
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REAL(wp), DIMENSION(:) , INTENT(out) :: pdept_1d, pdepw_1d ! 1D grid-point depth [m]
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REAL(wp), DIMENSION(:) , INTENT(out) :: pe3t_1d , pe3w_1d ! 1D grid-point depth [m]
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REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pdept, pdepw ! grid-point depth [m]
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REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pe3t , pe3u , pe3v , pe3f ! vertical scale factors [m]
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REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pe3w , pe3uw, pe3vw ! i-scale factors
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INTEGER , DIMENSION(:,:) , INTENT(out) :: k_top, k_bot ! first & last ocean level
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!
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INTEGER :: jk ! dummy indices
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REAL(wp), DIMENSION(jpi,jpj) :: z2d ! 2D workspace
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!!----------------------------------------------------------------------
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!
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IF(lwp) WRITE(numout,*)
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IF(lwp) WRITE(numout,*) 'usr_def_zgr : LOCK_EXCHANGE configuration (z-coordinate closed box ocean without cavities)'
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IF(lwp) WRITE(numout,*) '~~~~~~~~~~~'
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!
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!
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! type of vertical coordinate ==>>> here LOCK EXCHANGE : flat bottom always
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! ---------------------------
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ld_zco = .TRUE. ! z-partial-step coordinate
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ld_zps = .FALSE. ! z-partial-step coordinate
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ld_sco = .FALSE. ! s-coordinate
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ld_isfcav = .FALSE. ! ISF Ice Shelves Flag
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!
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!
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! Build the vertical coordinate system
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! ------------------------------------
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!
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! !== UNmasked meter bathymetry ==!
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!
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! flat bassin (20m deep and 64000m wide, set through the jpk and jpi (see userdef_nam.F90))
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CALL zgr_z1d( pdept_1d, pdepw_1d, pe3t_1d , pe3w_1d ) ! Reference z-coordinate system
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!
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!
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! !== top masked level bathymetry ==! (all coordinates)
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!
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! no ocean cavities : top ocean level is ONE, except over land
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! the ocean basin surrounded by land (1+nn_hls grid-points) set through lbc_lnk call
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z2d(:,:) = 1._wp ! surface ocean is the 1st level
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CALL lbc_lnk( 'usrdef_zgr', z2d, 'T', 1._wp ) ! closed basin, see userdef_nam.F90
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k_top(:,:) = NINT( z2d(:,:) )
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!
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!
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! !== z-coordinate ==! (step-like topography)
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!
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! !* bottom ocean compute from the depth of grid-points
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k_bot(:,:) = jpkm1 * k_top(:,:) ! here use k_top as a land mask
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! !* horizontally uniform coordinate (reference z-co everywhere)
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DO jk = 1, jpk
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pdept(:,:,jk) = pdept_1d(jk)
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pdepw(:,:,jk) = pdepw_1d(jk)
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pe3t (:,:,jk) = pe3t_1d (jk)
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pe3u (:,:,jk) = pe3t_1d (jk)
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pe3v (:,:,jk) = pe3t_1d (jk)
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pe3f (:,:,jk) = pe3t_1d (jk)
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pe3w (:,:,jk) = pe3w_1d (jk)
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pe3uw(:,:,jk) = pe3w_1d (jk)
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pe3vw(:,:,jk) = pe3w_1d (jk)
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END DO
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!
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END SUBROUTINE usr_def_zgr
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SUBROUTINE zgr_z1d( pdept_1d, pdepw_1d, pe3t_1d , pe3w_1d ) ! 1D reference vertical coordinate
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!!----------------------------------------------------------------------
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!! *** ROUTINE zgr_z1d ***
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!!
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!! ** Purpose : set the depth of model levels and the resulting
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!! vertical scale factors.
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!!
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!! ** Method : 1D z-coordinate system (use in all type of coordinate)
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!! The depth of model levels is set from dep(k), an analytical function:
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!! w-level: depw_1d = dep(k)
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!! t-level: dept_1d = dep(k+0.5)
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!! The scale factors are the discrete derivative of the depth:
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!! e3w_1d(jk) = dk[ dept_1d ]
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!! e3t_1d(jk) = dk[ depw_1d ]
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!!
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!! === Here constant vertical resolution ===
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!!
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!! ** Action : - pdept_1d, pdepw_1d : depth of T- and W-point (m)
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!! - pe3t_1d , pe3w_1d : scale factors at T- and W-levels (m)
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!!----------------------------------------------------------------------
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REAL(wp), DIMENSION(:), INTENT(out) :: pdept_1d, pdepw_1d ! 1D grid-point depth [m]
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REAL(wp), DIMENSION(:), INTENT(out) :: pe3t_1d , pe3w_1d ! 1D vertical scale factors [m]
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!
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INTEGER :: jk ! dummy loop indices
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REAL(wp) :: zt, zw ! local scalar
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!!----------------------------------------------------------------------
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!
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IF(lwp) THEN ! Parameter print
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WRITE(numout,*)
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WRITE(numout,*) ' zgr_z1d : Reference vertical z-coordinates: uniform dz = ', rn_dz
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WRITE(numout,*) ' ~~~~~~~'
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ENDIF
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!
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! Reference z-coordinate (depth - scale factor at T- and W-points) ! Madec & Imbard 1996 function
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! ----------------------
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DO jk = 1, jpk
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zw = REAL( jk , wp )
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zt = REAL( jk , wp ) + 0.5_wp
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pdepw_1d(jk) = rn_dz * REAL( jk-1 , wp )
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pdept_1d(jk) = rn_dz * ( REAL( jk-1 , wp ) + 0.5_wp )
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pe3w_1d (jk) = rn_dz
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pe3t_1d (jk) = rn_dz
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END DO
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!
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IF(lwp) THEN ! control print
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WRITE(numout,*)
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WRITE(numout,*) ' Reference 1D z-coordinate depth and scale factors:'
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WRITE(numout, "(9x,' level gdept_1d gdepw_1d e3t_1d e3w_1d ')" )
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WRITE(numout, "(10x, i4, 4f9.2)" ) ( jk, pdept_1d(jk), pdepw_1d(jk), pe3t_1d(jk), pe3w_1d(jk), jk = 1, jpk )
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ENDIF
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!
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END SUBROUTINE zgr_z1d
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!!======================================================================
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END MODULE usrdef_zgr
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