get_mesh_dim_lonlat_reg.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_lonlat_reg(KGRID_PAR,KL,PGRID_PAR,PDX,PDY)
!     ##############################################################
!
!!**** *GET_MESH_DIM_LONLAT_REG* get the grid mesh dimensions
!!
!!    PURPOSE
!!    -------
!!
!!    METHOD
!!    ------
!!   
!!    REFERENCE
!!    ---------
!!
!!    AUTHOR
!!    ------
!!
!!    V. Masson         Meteo-France
!!
!!    MODIFICATION
!!    ------------
!!
!!    Original    03/2004
!!
!----------------------------------------------------------------------------
!
!*    0.     DECLARATION
!            -----------
!
USE modd_csts, ONLY : xpi, xradius
!
USE mode_gridtype_lonlat_reg
!
!
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, DIMENSION(KL) :: zlat     ! latitude
REAL, DIMENSION(KL) :: zlon     ! longitude
REAL    :: zlonmin ! minimum longitude (degrees)
REAL    :: zlonmax ! maximum longitude (degrees)
REAL    :: zlatmin ! minimum latitude  (degrees)
REAL    :: zlatmax ! maximum latitude  (degrees)
INTEGER :: ilon    ! number of points in longitude
INTEGER :: ilat    ! number of points in latitude
REAL(KIND=JPRB) :: zhook_handle

!----------------------------------------------------------------------------
!
!*       1.    Get grid information
!              --------------------
!
IF (lhook) CALL dr_hook('GET_MESH_DIM_LONLAT_REG',0,zhook_handle)
 CALL get_gridtype_lonlat_reg(pgrid_par,zlonmin,zlonmax,                    &
                               zlatmin,zlatmax,ilon,ilat,plon=zlon,plat=zlat )  
!
!-----------------------------------------------------------------------------
!
!*       2.    Compute grid size
!              -----------------
!
pdx(:) = (zlonmax-zlonmin)/float(ilon) * (xpi / 180.) * xradius * cos(zlat(:)*xpi/180.)
pdy(:) = (zlatmax-zlatmin)/float(ilat) * (xpi / 180.) * xradius
IF (lhook) CALL dr_hook('GET_MESH_DIM_LONLAT_REG',1,zhook_handle)
!
!-------------------------------------------------------------------------------
!
END SUBROUTINE get_mesh_dim_lonlat_reg