get_mesh_dim_conf_proj.F90

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!SFX_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
!SFX_LIC This is part of the SURFEX software governed by the CeCILL-C licence
!SFX_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt  
!SFX_LIC for details. version 1.
!     #########
      SUBROUTINE get_mesh_dim_conf_proj(KGRID_PAR,KL,PGRID_PAR,PDX,PDY)
!     ##############################################################
!
!!**** *GET_MESH_DIM_CONF_PROJ* get the grid mesh dimensions
!!
!!    PURPOSE
!!    -------
!!
!!    METHOD
!!    ------
!!   
!!    REFERENCE
!!    ---------
!!
!!    AUTHOR
!!    ------
!!
!!    V. Masson         Meteo-France
!!
!!    MODIFICATION
!!    ------------
!!
!!    Original    03/2004
!!
!----------------------------------------------------------------------------
!
!*    0.     DECLARATION
!            -----------
!
USE mode_gridtype_conf_proj
!
!
USE yomhook   ,ONLY : lhook,   dr_hook
USE parkind1  ,ONLY : jprb
!
IMPLICIT NONE
!
!*    0.1    Declaration of arguments
!            ------------------------
!
INTEGER,                         INTENT(IN)    :: KGRID_PAR ! size of PGRID_PAR
INTEGER,                         INTENT(IN)    :: KL        ! number of points
REAL,    DIMENSION(KGRID_PAR),   INTENT(IN)    :: PGRID_PAR ! grid parameters
REAL,    DIMENSION(KL),          INTENT(OUT)   :: PDX       ! dimension in x dir. (meters)
REAL,    DIMENSION(KL),          INTENT(OUT)   :: PDY       ! dimension in y dir. (meters)
!
!*    0.2    Declaration of other local variables
!            ------------------------------------
!
REAL                :: ZLAT0    ! reference latitude
REAL                :: ZLON0    ! reference longitude
REAL                :: ZRPK     ! projection parameter 
!                               !   K=1 : stereographic north pole
!                               ! 0<K<1 : Lambert, north hemisphere
!                               !   K=0 : Mercator
!                               !-1<K<0 : Lambert, south hemisphere
!                               !   K=-1: stereographic south pole
REAL                :: ZBETA    ! angle between grid and reference longitude
REAL                :: ZLATOR   ! latitude  of point of coordinates X=0, Y=0
REAL                :: ZLONOR   ! longitude of point of coordinates X=0, Y=0
REAL, DIMENSION(KL) :: ZX       ! X conformal coordinate
REAL, DIMENSION(KL) :: ZY       ! Y conformal coordinate
REAL, DIMENSION(KL) :: ZLAT     ! latitude
REAL, DIMENSION(KL) :: ZLON     ! longitude
REAL, DIMENSION(KL) :: ZMAP     ! map factor
REAL(KIND=JPRB) :: ZHOOK_HANDLE

!----------------------------------------------------------------------------
!
IF (lhook) CALL dr_hook('GET_MESH_DIM_CONF_PROJ',0,zhook_handle)
 CALL get_gridtype_conf_proj(pgrid_par,zlat0,zlon0,zrpk,zbeta,&
                              zlator,zlonor,                   &
                              px=zx,py=zy,pdx=pdx,pdy=pdy      )  
!
!---------------------------------------------------------------------------
!
!*       2.    Computation of latitude and longitude
!              -------------------------------------
!
 CALL latlon_conf_proj(zlat0,zlon0,zrpk,zbeta,zlator,zlonor,zx,zy,zlat,zlon)
!
!-----------------------------------------------------------------------------
!
!*       3.    Compute grif size
!              -----------------
!
 CALL map_factor_conf_proj(zlat0,zrpk,zlat,zmap)
!
pdx(:) = pdx(:) / zmap(:)
pdy(:) = pdy(:) / zmap(:)
IF (lhook) CALL dr_hook('GET_MESH_DIM_CONF_PROJ',1,zhook_handle)
!
!-------------------------------------------------------------------------------
!
END SUBROUTINE get_mesh_dim_conf_proj