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MODULE usrdef_hgr
!!======================================================================
!! *** MODULE usrdef_hgr ***
!!
!! === STATION_ASF configuration ===
!!
!! User defined : mesh and Coriolis parameter of a user configuration
!!======================================================================
!! History : 4.0 ! 2016-03 (S. Flavoni)
!! History : 4.0 ! 2019-10 (L. Brodeau)
!!----------------------------------------------------------------------
!!----------------------------------------------------------------------
!! usr_def_hgr : initialize the horizontal mesh
!!----------------------------------------------------------------------
USE c1d , ONLY: rn_lon1d, rn_lat1d ! ocean lon/lat define by namelist
USE par_oce ! ocean space and time domain
USE phycst ! physical constants
USE usrdef_nam !
!
USE in_out_manager ! I/O manager
USE lib_mpp ! MPP library
IMPLICIT NONE
PRIVATE
PUBLIC usr_def_hgr ! called in domhgr.F90
!!----------------------------------------------------------------------
!! NEMO/OCE 4.0 , NEMO Consortium (2018)
!! $Id: usrdef_hgr.F90 13216 2020-07-02 09:25:49Z rblod $
!! Software governed by the CeCILL license (see ./LICENSE)
!!----------------------------------------------------------------------
CONTAINS
SUBROUTINE usr_def_hgr( plamt , plamu , plamv , plamf , & ! geographic position (required)
& pphit , pphiu , pphiv , pphif , & !
& kff , pff_f , pff_t , & ! Coriolis parameter (if domain not on the sphere)
& pe1t , pe1u , pe1v , pe1f , & ! scale factors (required)
& pe2t , pe2u , pe2v , pe2f , & !
& ke1e2u_v , pe1e2u , pe1e2v ) ! u- & v-surfaces (if gridsize reduction is used in strait(s))
!!----------------------------------------------------------------------
!! *** ROUTINE usr_def_hgr ***
!!
!! ** Purpose : user defined mesh and Coriolis parameter
!!
!! ** Method : set all intent(out) argument to a proper value
!!
!! Here STATION_ASF configuration :
!! Rectangular 3x3 domain
!! - Located at 150E-50N
!! - a constant horizontal resolution
!!
!! ** Action : - define longitude & latitude of t-, u-, v- and f-points (in degrees)
!! - define coriolis parameter at f-point if the domain in not on the sphere (on beta-plane)
!! - define i- & j-scale factors at t-, u-, v- and f-points (in meters)
!! - define u- & v-surfaces (if gridsize reduction is used in some straits) (in m2)
!!----------------------------------------------------------------------
REAL(wp), DIMENSION(:,:), INTENT(out) :: plamt, plamu, plamv, plamf ! longitude outputs [degrees]
REAL(wp), DIMENSION(:,:), INTENT(out) :: pphit, pphiu, pphiv, pphif ! latitude outputs [degrees]
INTEGER , INTENT(out) :: kff ! =1 Coriolis parameter computed here, =0 otherwise
REAL(wp), DIMENSION(:,:), INTENT(out) :: pff_f, pff_t ! Coriolis factor at f-point [1/s]
REAL(wp), DIMENSION(:,:), INTENT(out) :: pe1t, pe1u, pe1v, pe1f ! i-scale factors [m]
REAL(wp), DIMENSION(:,:), INTENT(out) :: pe2t, pe2u, pe2v, pe2f ! j-scale factors [m]
INTEGER , INTENT(out) :: ke1e2u_v ! =1 u- & v-surfaces computed here, =0 otherwise
REAL(wp), DIMENSION(:,:), INTENT(out) :: pe1e2u, pe1e2v ! u- & v-surfaces (if reduction in strait) [m2]
!
REAL(wp) :: zf0 ! local scalar
!!-------------------------------------------------------------------------------
!
IF(lwp) WRITE(numout,*)
IF(lwp) WRITE(numout,*) 'usr_def_hgr : STATION_ASF configuration'
IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ uniform grid spacing WITH Coriolis force'
IF(lwp) WRITE(numout,*) ' coordinates of station =>', rn_lon1d, rn_lat1d
!
! !== grid point position ==! (Special case of 1D config: all lon/lat are the same)
! ! longitude
plamt(:,:) = rn_lon1d
plamu(:,:) = rn_lon1d
plamv(:,:) = rn_lon1d
plamf(:,:) = rn_lon1d
! ! latitude
pphit(:,:) = rn_lat1d
pphiu(:,:) = rn_lat1d
pphiv(:,:) = rn_lat1d
pphif(:,:) = rn_lat1d
! !== Horizontal scale factors ==! (in meters)
! ! constant grid spacing
pe1t(:,:) = 100. ; pe2t(:,:) = 100.
pe1u(:,:) = 100. ; pe2u(:,:) = 100.
pe1v(:,:) = 100. ; pe2v(:,:) = 100.
pe1f(:,:) = 100. ; pe2f(:,:) = 100.
!
! ! NO reduction of grid size in some straits
ke1e2u_v = 0 ! ==>> u_ & v_surfaces will be computed in dom_ghr routine
pe1e2u(:,:) = 0._wp ! CAUTION: set to zero to avoid error with some compilers that
pe1e2v(:,:) = 0._wp ! require an initialization of INTENT(out) arguments
!
!
! !== Coriolis parameter ==!
zf0 = 2._wp * omega * SIN( rad * rn_lat1d )
pff_f(:,:) = zf0
pff_t(:,:) = zf0
kff = 1 ! indicate to skip computing Coriolis parameter afterward
!
END SUBROUTINE usr_def_hgr
!!======================================================================
END MODULE usrdef_hgr