| 1 | MODULE usrdef_hgr |
|---|
| 2 | !!====================================================================== |
|---|
| 3 | !! *** MODULE usrdef_hgr *** |
|---|
| 4 | !! |
|---|
| 5 | !! === ICE_AGRIF configuration === |
|---|
| 6 | !! |
|---|
| 7 | !! User defined : mesh and Coriolis parameter of a user configuration |
|---|
| 8 | !!====================================================================== |
|---|
| 9 | !! History : NEMO ! 2016-08 (S. Flavoni, G. Madec) Original code |
|---|
| 10 | !!---------------------------------------------------------------------- |
|---|
| 11 | |
|---|
| 12 | !!---------------------------------------------------------------------- |
|---|
| 13 | !! usr_def_hgr : initialize the horizontal mesh for ICE_AGRIF configuration |
|---|
| 14 | !!---------------------------------------------------------------------- |
|---|
| 15 | USE dom_oce ! ocean space and time domain |
|---|
| 16 | USE par_oce ! ocean space and time domain |
|---|
| 17 | USE phycst ! physical constants |
|---|
| 18 | USE usrdef_nam, ONLY: rn_dx, rn_dy, ln_corio, rn_ppgphi0 ! horizontal resolution in meters |
|---|
| 19 | ! coriolis and reference latitude |
|---|
| 20 | USE in_out_manager ! I/O manager |
|---|
| 21 | USE lib_mpp ! MPP library |
|---|
| 22 | |
|---|
| 23 | IMPLICIT NONE |
|---|
| 24 | PRIVATE |
|---|
| 25 | |
|---|
| 26 | REAL(wp) :: roffsetx, roffsety ! Offset in km to first f-point |
|---|
| 27 | |
|---|
| 28 | PUBLIC usr_def_hgr ! called by domhgr.F90 |
|---|
| 29 | |
|---|
| 30 | !! * Substitutions |
|---|
| 31 | # include "do_loop_substitute.h90" |
|---|
| 32 | !!---------------------------------------------------------------------- |
|---|
| 33 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
|---|
| 34 | !! $Id$ |
|---|
| 35 | !! Software governed by the CeCILL license (see ./LICENSE) |
|---|
| 36 | !!---------------------------------------------------------------------- |
|---|
| 37 | CONTAINS |
|---|
| 38 | |
|---|
| 39 | SUBROUTINE usr_def_hgr( plamt , plamu , plamv , plamf , & ! geographic position (required) |
|---|
| 40 | & pphit , pphiu , pphiv , pphif , & ! |
|---|
| 41 | & kff , pff_f , pff_t , & ! Coriolis parameter (if domain not on the sphere) |
|---|
| 42 | & pe1t , pe1u , pe1v , pe1f , & ! scale factors (required) |
|---|
| 43 | & pe2t , pe2u , pe2v , pe2f , & ! |
|---|
| 44 | & ke1e2u_v , pe1e2u , pe1e2v ) ! u- & v-surfaces (if gridsize reduction is used in strait(s)) |
|---|
| 45 | !!---------------------------------------------------------------------- |
|---|
| 46 | !! *** ROUTINE usr_def_hgr *** |
|---|
| 47 | !! |
|---|
| 48 | !! ** Purpose : user defined mesh and Coriolis parameter |
|---|
| 49 | !! |
|---|
| 50 | !! ** Method : set all intent(out) argument to a proper value |
|---|
| 51 | !! ICE_AGRIF configuration : uniform grid spacing (rn_dx) |
|---|
| 52 | !! without Coriolis force (f=0) |
|---|
| 53 | !! |
|---|
| 54 | !! ** Action : - define longitude & latitude of t-, u-, v- and f-points (in kms) |
|---|
| 55 | !! - define coriolis parameter at f-point if the domain in not on the sphere (on beta-plane) |
|---|
| 56 | !! - define i- & j-scale factors at t-, u-, v- and f-points (in meters) |
|---|
| 57 | !! - define u- & v-surfaces (if gridsize reduction is used in some straits) (in m2) |
|---|
| 58 | !!---------------------------------------------------------------------- |
|---|
| 59 | REAL(wp), DIMENSION(:,:), INTENT(out) :: plamt, plamu, plamv, plamf ! longitude outputs [degrees] |
|---|
| 60 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pphit, pphiu, pphiv, pphif ! latitude outputs [degrees] |
|---|
| 61 | INTEGER , INTENT(out) :: kff ! =1 Coriolis parameter computed here, =0 otherwise |
|---|
| 62 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pff_f, pff_t ! Coriolis factor at f-point [1/s] |
|---|
| 63 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe1t, pe1u, pe1v, pe1f ! i-scale factors [m] |
|---|
| 64 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe2t, pe2u, pe2v, pe2f ! j-scale factors [m] |
|---|
| 65 | INTEGER , INTENT(out) :: ke1e2u_v ! =1 u- & v-surfaces computed here, =0 otherwise |
|---|
| 66 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe1e2u, pe1e2v ! u- & v-surfaces (if reduction in strait) [m2] |
|---|
| 67 | ! |
|---|
| 68 | INTEGER :: ji, jj ! dummy loop indices |
|---|
| 69 | REAL(wp) :: zbeta, zf0 |
|---|
| 70 | REAL(wp) :: zti, ztj ! local scalars |
|---|
| 71 | !!------------------------------------------------------------------------------- |
|---|
| 72 | ! |
|---|
| 73 | IF(lwp) WRITE(numout,*) |
|---|
| 74 | IF(lwp) WRITE(numout,*) 'usr_def_hgr : ICE_AGRIF configuration bassin' |
|---|
| 75 | IF(lwp) WRITE(numout,*) |
|---|
| 76 | IF(lwp) WRITE(numout,*) ' f-plane with irregular grid-spacing (+- 10%)' |
|---|
| 77 | IF(lwp) WRITE(numout,*) ' the max is given by rn_dx and rn_dy' |
|---|
| 78 | ! |
|---|
| 79 | ! |
|---|
| 80 | ! Position coordinates (in kilometers) |
|---|
| 81 | ! ========== |
|---|
| 82 | ! Offset is given at first f-point, i.e. at (i,j) = (nn_hls+1, nn_hls+1) |
|---|
| 83 | ! Here we assume the grid is centred around a T-point at the middle of |
|---|
| 84 | ! of the domain (hence domain size is odd) |
|---|
| 85 | roffsetx = (-REAL(Ni0glo-1, wp) + 1._wp) * 0.5 * 1.e-3 * rn_dx |
|---|
| 86 | roffsety = (-REAL(Nj0glo-1, wp) + 1._wp) * 0.5 * 1.e-3 * rn_dy |
|---|
| 87 | #if defined key_agrif |
|---|
| 88 | IF( .NOT.Agrif_Root() ) THEN |
|---|
| 89 | ! deduce offset from parent: |
|---|
| 90 | roffsetx = Agrif_Parent(roffsetx) & |
|---|
| 91 | & + (-(nbghostcells_x_w - 1) + (Agrif_Parent(nbghostcells_x_w) & |
|---|
| 92 | & + Agrif_Ix()-2)*Agrif_Rhox()) * 1.e-3 * rn_dx |
|---|
| 93 | roffsety = Agrif_Parent(roffsety) & |
|---|
| 94 | & + (-(nbghostcells_y_s - 1) + (Agrif_Parent(nbghostcells_y_s) & |
|---|
| 95 | & + Agrif_Iy()-2)*Agrif_Rhoy()) * 1.e-3 * rn_dy |
|---|
| 96 | ENDIF |
|---|
| 97 | #endif |
|---|
| 98 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 99 | zti = REAL( mig0(ji)-1, wp ) ! start at i=0 in the global grid without halos |
|---|
| 100 | ztj = REAL( mjg0(jj)-1, wp ) ! start at j=0 in the global grid without halos |
|---|
| 101 | |
|---|
| 102 | plamt(ji,jj) = roffsetx + rn_dx * 1.e-3 * ( zti - 0.5_wp ) |
|---|
| 103 | plamu(ji,jj) = roffsetx + rn_dx * 1.e-3 * zti |
|---|
| 104 | plamv(ji,jj) = plamt(ji,jj) |
|---|
| 105 | plamf(ji,jj) = plamu(ji,jj) |
|---|
| 106 | |
|---|
| 107 | pphit(ji,jj) = roffsety + rn_dy * 1.e-3 * ( ztj - 0.5_wp ) |
|---|
| 108 | pphiv(ji,jj) = roffsety + rn_dy * 1.e-3 * ztj |
|---|
| 109 | pphiu(ji,jj) = pphit(ji,jj) |
|---|
| 110 | pphif(ji,jj) = pphiv(ji,jj) |
|---|
| 111 | END_2D |
|---|
| 112 | ! |
|---|
| 113 | ! Horizontal scale factors (in meters) |
|---|
| 114 | ! ====== |
|---|
| 115 | !! ==> EITHER 1) variable scale factors |
|---|
| 116 | !! clem: This can be used with a 1proc simulation but I think it breaks repro when >1procs are used |
|---|
| 117 | !! DO jj = 1, jpj |
|---|
| 118 | !! DO ji = 1, jpi |
|---|
| 119 | !! !!pe1t(ji,jj) = rn_dx * EXP( -0.8/REAL(jpiglo**2) * (mi0(ji)-REAL(jpiglo+1)*0.5)**2 ) ! gaussian shape |
|---|
| 120 | !! !!pe2t(ji,jj) = rn_dy * EXP( -0.8/REAL(jpjglo**2) * (mj0(jj)-REAL(jpjglo+1)*0.5)**2 ) ! gaussian shape |
|---|
| 121 | !! pe1t(ji,jj) = rn_dx * ( 1. -0.1 * ABS(REAL(mi0(ji))-REAL(jpiglo+1)*0.5) / (1.-REAL(jpiglo+1)*0.5) ) ! linear shape |
|---|
| 122 | !! pe2t(ji,jj) = rn_dy * ( 1. -0.1 * ABS(REAL(mj0(jj))-REAL(jpjglo+1)*0.5) / (1.-REAL(jpjglo+1)*0.5) ) ! linear shape |
|---|
| 123 | !! END DO |
|---|
| 124 | !! END DO |
|---|
| 125 | !!#if defined key_agrif |
|---|
| 126 | !! IF( .NOT. Agrif_Root() ) THEN ! only works if the zoom is positioned at the center of the parent grid |
|---|
| 127 | !! DO jj = 1, jpj |
|---|
| 128 | !! DO ji = 1, jpi |
|---|
| 129 | !! pe1t(ji,jj) = rn_dx * ( 1. -0.1 * ABS(REAL(mi0(ji))-REAL(jpiglo+1)*0.5) / (1.-REAL(jpiglo+1)*0.5) & |
|---|
| 130 | !! & * REAL(jpiglo) / REAL(Agrif_Parent(jpiglo) * Agrif_Rhox()) ) ! factor to match parent grid |
|---|
| 131 | !! pe2t(ji,jj) = rn_dy * ( 1. -0.1 * ABS(REAL(mj0(jj))-REAL(jpjglo+1)*0.5) / (1.-REAL(jpjglo+1)*0.5) & |
|---|
| 132 | !! & * REAL(jpjglo) / REAL(Agrif_Parent(jpjglo) * Agrif_Rhoy()) ) ! factor to match parent grid |
|---|
| 133 | !! END DO |
|---|
| 134 | !! END DO |
|---|
| 135 | !! ENDIF |
|---|
| 136 | !!#endif |
|---|
| 137 | !! ==> OR 2) constant scale factors |
|---|
| 138 | pe1t(:,:) = rn_dx |
|---|
| 139 | pe2t(:,:) = rn_dy |
|---|
| 140 | !! ==> END |
|---|
| 141 | |
|---|
| 142 | pe1u(:,:) = pe1t(:,:) ; pe2u(:,:) = pe2t(:,:) |
|---|
| 143 | pe1v(:,:) = pe1t(:,:) ; pe2v(:,:) = pe2t(:,:) |
|---|
| 144 | pe1f(:,:) = pe1t(:,:) ; pe2f(:,:) = pe2t(:,:) |
|---|
| 145 | |
|---|
| 146 | ! ! NO reduction of grid size in some straits |
|---|
| 147 | ke1e2u_v = 0 ! ==>> u_ & v_surfaces will be computed in dom_ghr routine |
|---|
| 148 | pe1e2u(:,:) = 0._wp ! CAUTION: set to zero to avoid error with some compilers that |
|---|
| 149 | pe1e2v(:,:) = 0._wp ! require an initialization of INTENT(out) arguments |
|---|
| 150 | ! |
|---|
| 151 | ! |
|---|
| 152 | ! !== Coriolis parameter ==! |
|---|
| 153 | kff = 1 ! indicate not to compute Coriolis parameter afterward |
|---|
| 154 | ! |
|---|
| 155 | IF( ln_corio ) THEN |
|---|
| 156 | zbeta = 2._wp * omega * COS( rad * rn_ppgphi0 ) / ra |
|---|
| 157 | zf0 = 2._wp * omega * SIN( rad * rn_ppgphi0 ) |
|---|
| 158 | pff_f(:,:) = zf0 + zbeta * pphif(:,:) * 1.e+3 |
|---|
| 159 | pff_t(:,:) = zf0 + zbeta * pphit(:,:) * 1.e+3 |
|---|
| 160 | ELSE |
|---|
| 161 | pff_f(:,:) = 0. |
|---|
| 162 | pff_t(:,:) = 0. |
|---|
| 163 | ENDIF |
|---|
| 164 | ! |
|---|
| 165 | END SUBROUTINE usr_def_hgr |
|---|
| 166 | |
|---|
| 167 | !!====================================================================== |
|---|
| 168 | END MODULE usrdef_hgr |
|---|
