latlon_gridtype_lonlatval.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 latlon_gridtype_lonlatval(KGRID_PAR,KL,PGRID_PAR,PLAT,PLON,PMESH_SIZE,PDIR)
!     #########################################################################
!
!!****  *LATLON_GRIDTYPE_IGN* - routine to compute the horizontal geographic fields
!!
!!    PURPOSE
!!    -------
!!
!!**  METHOD
!!    ------
!!
!!    EXTERNAL
!!    --------
!!
!!
!!    IMPLICIT ARGUMENTS
!!    ------------------
!!
!!    REFERENCE
!!    ---------
!!
!!
!!    AUTHOR
!!    ------
!!      E. Martin   *Meteo France*
!!      M Lafaysse 08/2013 missing deallocate
!!    MODIFICATIONS
!!    -------------
!!      Original    10/2007 
!-------------------------------------------------------------------------------
!
!*       0.    DECLARATIONS
!              ------------
!
USE modd_csts,     ONLY : xpi, xradius
!
USE mode_gridtype_lonlatval
!
!
!
USE yomhook   ,ONLY : lhook,   dr_hook
USE parkind1  ,ONLY : jprb
!
IMPLICIT NONE
!
!*       0.1   Declarations 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  ! parameters defining this grid
REAL, DIMENSION(KL),        INTENT(OUT) :: plat       ! latitude  (degrees)
REAL, DIMENSION(KL),        INTENT(OUT) :: plon       ! longitude (degrees)
REAL, DIMENSION(KL),        INTENT(OUT) :: pmesh_size ! mesh size (m2)
REAL, DIMENSION(KL),        INTENT(OUT) :: pdir ! direction of main grid Y axis (deg. from N, clockwise)
!
!*       0.2   Declarations of local variables
!              -------------------------------
!
REAL, DIMENSION(:),   ALLOCATABLE :: zx       ! X Lambert coordinate
REAL, DIMENSION(:),   ALLOCATABLE :: zy       ! Y  Lambertcoordinate
REAL, DIMENSION(:),   ALLOCATABLE :: zdx      ! size in X Lambert coordinate
REAL, DIMENSION(:),   ALLOCATABLE :: zdy      ! size in Y Lambert coordinate
REAL, DIMENSION(:),   ALLOCATABLE :: zdlat   ! grid size in latitude  unit
REAL, DIMENSION(:),   ALLOCATABLE :: zdlon   ! grid size in longitude unit
REAL(KIND=JPRB) :: zhook_handle
!---------------------------------------------------------------------------
!
!*       1.    Projection and 2D grid parameters
!              ---------------------------------
!
IF (lhook) CALL dr_hook('LATLON_GRIDTYPE_LONLATVAL',0,zhook_handle)
ALLOCATE(zx(SIZE(plat)))
ALLOCATE(zy(SIZE(plat)))
ALLOCATE(zdx(SIZE(plat)))
ALLOCATE(zdy(SIZE(plat)))
ALLOCATE(zdlon(SIZE(plat)))
ALLOCATE(zdlat(SIZE(plat)))

!
 CALL get_gridtype_lonlatval(pgrid_par,px=zx,py=zy,pdx=zdx,pdy=zdy      )
!
!---------------------------------------------------------------------------
!
!*       2.    Computation of latitude and longitude
!              -------------------------------------
!
 CALL latlon_lonlatval(zx,zy,plat,plon)
!
!-----------------------------------------------------------------------------
!
!*       3.    Compute grid size (2D array)
!              -----------------
!
!
zdlat = zdy
zdlon = zdx
!
pmesh_size(:) = xradius**2 * xpi/180.*(zdlon(:))              &
       * (sin((plat(:)+zdlat(:)/2.)*xpi/180.)-sin((plat(:)-zdlat(:)/2.)*xpi/180.))  
!
!-----------------------------------------------------------------------------
!
!*       4.    Direction of Y axis (from North) for each grid point
!              ----------------------------------------------------
!
pdir(:) = 0.



DEALLOCATE(zx)
DEALLOCATE(zy)
DEALLOCATE(zdx)
DEALLOCATE(zdy)
DEALLOCATE(zdlon)
DEALLOCATE(zdlat)



IF (lhook) CALL dr_hook('LATLON_GRIDTYPE_LONLATVAL',1,zhook_handle)
!
!---------------------------------------------------------------------------
!
END SUBROUTINE latlon_gridtype_lonlatval