MODULE usrdef_hgr !!====================================================================== !! *** MODULE usrdef_hgr *** !! !! === LOCK_EXCHANGE configuration === !! !! User defined : mesh and Coriolis parameter of a user configuration !!====================================================================== !! History : NEMO ! 2016-08 (S. Flavoni, G. Madec) Original code !! ! 2017-02 (P. Mathiot, S. Flavoni) Adapt code to ISOMIP case !!---------------------------------------------------------------------- !!---------------------------------------------------------------------- !! usr_def_hgr : initialize the horizontal mesh for ISOMIP configuration !!---------------------------------------------------------------------- USE dom_oce , ONLY: nimpp, njmpp ! ocean space and time domain USE par_oce ! ocean space and time domain USE phycst ! physical constants USE usrdef_nam, ONLY: rn_e1deg, rn_e2deg ! horizontal resolution in meters ! USE in_out_manager ! I/O manager USE lib_mpp ! MPP library IMPLICIT NONE PRIVATE PUBLIC usr_def_hgr ! called by domhgr.F90 !!---------------------------------------------------------------------- !! NEMO/OCE 4.0 , NEMO Consortium (2018) !! $Id$ !! 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 !! ISOMIP configuration !! !! ** Action : - define longitude & latitude of t-, u-, v- and f-points (in degrees) !! - define i- & j-scale factors at t-, u-, v- and f-points (in meters) !! - define u- & v-surfaces (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] ! INTEGER :: ji, jj ! dummy loop indices REAL(wp) :: zfact, zti, zui, zvi, zfi, ztj, zuj, zvj, zfj ! local scalars !!------------------------------------------------------------------------------- ! IF(lwp) THEN WRITE(numout,*) WRITE(numout,*) 'usr_def_hgr : ISOMIP configuration' WRITE(numout,*) '~~~~~~~~~~~' WRITE(numout,*) WRITE(numout,*) ' ===>> geographical mesh on the sphere with regular grid-spacing' WRITE(numout,*) ' given by rn_e1deg and rn_e2deg' ENDIF ! ! !== grid point position ==! (in degrees) DO jj = 1, jpj DO ji = 1, jpi ! longitude (west coast at lon=0°) plamt(ji,jj) = rn_e1deg * ( - 0.5 + REAL( ji-1 + nimpp-1 , wp ) ) plamu(ji,jj) = rn_e1deg * ( REAL( ji-1 + nimpp-1 , wp ) ) plamv(ji,jj) = plamt(ji,jj) plamf(ji,jj) = plamu(ji,jj) ! ! latitude (south coast at lat= 81°) pphit(ji,jj) = rn_e2deg * ( - 0.5 + REAL( jj-1 + njmpp-1 , wp ) ) - 80._wp pphiu(ji,jj) = pphit(ji,jj) pphiv(ji,jj) = rn_e2deg * ( REAL( jj-1 + njmpp-1 , wp ) ) - 80_wp pphif(ji,jj) = pphiv(ji,jj) END DO END DO ! ! !== Horizontal scale factors ==! (in meters) DO jj = 1, jpj DO ji = 1, jpi ! ! e1 (zonal) pe1t(ji,jj) = ra * rad * COS( rad * pphit(ji,jj) ) * rn_e1deg pe1u(ji,jj) = ra * rad * COS( rad * pphiu(ji,jj) ) * rn_e1deg pe1v(ji,jj) = ra * rad * COS( rad * pphiv(ji,jj) ) * rn_e1deg pe1f(ji,jj) = ra * rad * COS( rad * pphif(ji,jj) ) * rn_e1deg ! ! e2 (meridional) pe2t(ji,jj) = ra * rad * rn_e2deg pe2u(ji,jj) = ra * rad * rn_e2deg pe2v(ji,jj) = ra * rad * rn_e2deg pe2f(ji,jj) = ra * rad * rn_e2deg END DO END DO ! ! 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 ==! kff = 0 ! Coriolis parameter calculated on the sphere pff_f(:,:) = 0._wp ! CAUTION: set to zero to avoid error with some compilers that pff_t(:,:) = 0._wp ! require an initialization of INTENT(out) arguments ! END SUBROUTINE usr_def_hgr !!====================================================================== END MODULE usrdef_hgr