| 1 | MODULE usrdef_hgr |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE usrdef_hgr *** |
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| 4 | !! |
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| 5 | !! === ICEDYN configuration === |
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| 6 | !! |
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| 7 | !! User defined : mesh and Coriolis parameter of a user configuration |
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| 8 | !!====================================================================== |
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| 9 | !! History : NEMO ! 2016-08 (S. Flavoni, G. Madec) Original code |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! usr_def_hgr : initialize the horizontal mesh for ICEDYN configuration |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | USE dom_oce ! ocean space and time domain |
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| 16 | USE par_oce ! ocean space and time domain |
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| 17 | USE phycst ! physical constants |
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| 18 | USE usrdef_nam, ONLY: rn_dx, rn_dy, ln_corio, rn_ppgphi0 ! horizontal resolution in meters |
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| 19 | ! coriolis and reference latitude |
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| 20 | USE in_out_manager ! I/O manager |
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| 21 | USE lib_mpp ! MPP library |
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| 22 | |
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| 23 | IMPLICIT NONE |
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| 24 | PRIVATE |
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| 25 | |
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| 26 | PUBLIC usr_def_hgr ! called by domhgr.F90 |
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| 27 | |
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| 28 | !!---------------------------------------------------------------------- |
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| 29 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 30 | !! $Id$ |
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| 31 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 32 | !!---------------------------------------------------------------------- |
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| 33 | CONTAINS |
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| 34 | |
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| 35 | SUBROUTINE usr_def_hgr( plamt , plamu , plamv , plamf , & ! geographic position (required) |
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| 36 | & pphit , pphiu , pphiv , pphif , & ! |
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| 37 | & kff , pff_f , pff_t , & ! Coriolis parameter (if domain not on the sphere) |
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| 38 | & pe1t , pe1u , pe1v , pe1f , & ! scale factors (required) |
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| 39 | & pe2t , pe2u , pe2v , pe2f , & ! |
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| 40 | & ke1e2u_v , pe1e2u , pe1e2v ) ! u- & v-surfaces (if gridsize reduction is used in strait(s)) |
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| 41 | !!---------------------------------------------------------------------- |
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| 42 | !! *** ROUTINE usr_def_hgr *** |
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| 43 | !! |
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| 44 | !! ** Purpose : user defined mesh and Coriolis parameter |
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| 45 | !! |
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| 46 | !! ** Method : set all intent(out) argument to a proper value |
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| 47 | !! ICEDYN configuration : uniform grid spacing (rn_dx) |
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| 48 | !! without Coriolis force (f=0) |
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| 49 | !! |
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| 50 | !! ** Action : - define longitude & latitude of t-, u-, v- and f-points (in degrees) |
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| 51 | !! - define coriolis parameter at f-point if the domain in not on the sphere (on beta-plane) |
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| 52 | !! - define i- & j-scale factors at t-, u-, v- and f-points (in meters) |
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| 53 | !! - define u- & v-surfaces (if gridsize reduction is used in some straits) (in m2) |
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| 54 | !!---------------------------------------------------------------------- |
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| 55 | REAL(wp), DIMENSION(:,:), INTENT(out) :: plamt, plamu, plamv, plamf ! longitude outputs [degrees] |
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| 56 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pphit, pphiu, pphiv, pphif ! latitude outputs [degrees] |
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| 57 | INTEGER , INTENT(out) :: kff ! =1 Coriolis parameter computed here, =0 otherwise |
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| 58 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pff_f, pff_t ! Coriolis factor at f-point [1/s] |
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| 59 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe1t, pe1u, pe1v, pe1f ! i-scale factors [m] |
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| 60 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe2t, pe2u, pe2v, pe2f ! j-scale factors [m] |
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| 61 | INTEGER , INTENT(out) :: ke1e2u_v ! =1 u- & v-surfaces computed here, =0 otherwise |
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| 62 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe1e2u, pe1e2v ! u- & v-surfaces (if reduction in strait) [m2] |
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| 63 | ! |
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| 64 | INTEGER :: ji, jj ! dummy loop indices |
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| 65 | REAL(wp) :: zphi0, zlam0, zbeta, zf0 |
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| 66 | REAL(wp) :: zti, zui, ztj, zvj ! local scalars |
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| 67 | !!------------------------------------------------------------------------------- |
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| 68 | ! |
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| 69 | IF(lwp) WRITE(numout,*) |
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| 70 | IF(lwp) WRITE(numout,*) 'usr_def_hgr : ICEDYN configuration bassin' |
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| 71 | IF(lwp) WRITE(numout,*) |
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| 72 | IF(lwp) WRITE(numout,*) ' f-plane with irregular grid-spacing (+- 10%)' |
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| 73 | IF(lwp) WRITE(numout,*) ' the max is given by rn_dx and rn_dy' |
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| 74 | |
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| 75 | ! ========== |
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| 76 | zlam0 = -(jpiglo-1)/2 * 1.e-3 * rn_dx |
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| 77 | zphi0 = -(jpjglo-1)/2 * 1.e-3 * rn_dy |
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| 78 | |
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| 79 | #if defined key_agrif |
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| 80 | IF( .NOT. Agrif_Root() ) THEN |
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| 81 | !clem zlam0 = Agrif_Parent(zlam0) + (Agrif_ix())*Agrif_Parent(rn_dx) * 1.e-5 |
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| 82 | !clem zphi0 = Agrif_Parent(zphi0) + (Agrif_iy())*Agrif_Parent(rn_dy) * 1.e-5 |
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| 83 | zlam0 = ( 0.5_wp - ( Agrif_parent(jpiglo) - 1 ) / 2 ) * 1.e-3 * Agrif_irhox() * rn_dx & |
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| 84 | & + ( Agrif_Ix() + nbghostcells - 1 ) * Agrif_irhox() * rn_dx * 1.e-3 - ( 0.5_wp + nbghostcells ) * rn_dx * 1.e-3 |
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| 85 | zphi0 = ( 0.5_wp - ( Agrif_parent(jpjglo) - 1 ) / 2 ) * 1.e-3 * Agrif_irhoy() * rn_dy & |
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| 86 | & + ( Agrif_Iy() + nbghostcells - 1 ) * Agrif_irhoy() * rn_dy * 1.e-3 - ( 0.5_wp + nbghostcells ) * rn_dy * 1.e-3 |
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| 87 | ENDIF |
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| 88 | #endif |
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| 89 | |
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| 90 | DO jj = 1, jpj |
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| 91 | DO ji = 1, jpi |
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| 92 | zti = FLOAT( ji - 1 + nimpp - 1 ) ; ztj = FLOAT( jj - 1 + njmpp - 1 ) |
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| 93 | zui = FLOAT( ji - 1 + nimpp - 1 ) + 0.5_wp ; zvj = FLOAT( jj - 1 + njmpp - 1 ) + 0.5_wp |
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| 94 | |
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| 95 | plamt(ji,jj) = zlam0 + rn_dx * 1.e-3 * zti |
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| 96 | plamu(ji,jj) = zlam0 + rn_dx * 1.e-3 * zui |
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| 97 | plamv(ji,jj) = plamt(ji,jj) |
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| 98 | plamf(ji,jj) = plamu(ji,jj) |
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| 99 | |
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| 100 | pphit(ji,jj) = zphi0 + rn_dy * 1.e-3 * ztj |
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| 101 | pphiv(ji,jj) = zphi0 + rn_dy * 1.e-3 * zvj |
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| 102 | pphiu(ji,jj) = pphit(ji,jj) |
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| 103 | pphif(ji,jj) = pphiv(ji,jj) |
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| 104 | END DO |
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| 105 | END DO |
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| 106 | |
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| 107 | ! Horizontal scale factors (in meters) |
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| 108 | ! ====== |
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| 109 | !! ==> EITHER 1) variable scale factors |
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| 110 | !! clem: This can be used with a 1proc simulation but I think it breaks repro when >1procs are used |
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| 111 | !! DO jj = 1, jpj |
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| 112 | !! DO ji = 1, jpi |
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| 113 | !! !!pe1t(ji,jj) = rn_dx * EXP( -0.8/REAL(jpiglo**2) * (mi0(ji)-REAL(jpiglo+1)*0.5)**2 ) ! gaussian shape |
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| 114 | !! !!pe2t(ji,jj) = rn_dy * EXP( -0.8/REAL(jpjglo**2) * (mj0(jj)-REAL(jpjglo+1)*0.5)**2 ) ! gaussian shape |
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| 115 | !! 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 |
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| 116 | !! 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 |
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| 117 | !! END DO |
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| 118 | !! END DO |
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| 119 | !!#if defined key_agrif |
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| 120 | !! IF( .NOT. Agrif_Root() ) THEN ! only works if the zoom is positioned at the center of the parent grid |
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| 121 | !! DO jj = 1, jpj |
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| 122 | !! DO ji = 1, jpi |
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| 123 | !! pe1t(ji,jj) = rn_dx * ( 1. -0.1 * ABS(REAL(mi0(ji))-REAL(jpiglo+1)*0.5) / (1.-REAL(jpiglo+1)*0.5) & |
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| 124 | !! & * REAL(jpiglo) / REAL(Agrif_Parent(jpiglo) * Agrif_Rhox()) ) ! factor to match parent grid |
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| 125 | !! pe2t(ji,jj) = rn_dy * ( 1. -0.1 * ABS(REAL(mj0(jj))-REAL(jpjglo+1)*0.5) / (1.-REAL(jpjglo+1)*0.5) & |
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| 126 | !! & * REAL(jpjglo) / REAL(Agrif_Parent(jpjglo) * Agrif_Rhoy()) ) ! factor to match parent grid |
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| 127 | !! END DO |
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| 128 | !! END DO |
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| 129 | !! ENDIF |
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| 130 | !!#endif |
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| 131 | !! ==> OR 2) constant scale factors |
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| 132 | pe1t(:,:) = rn_dx |
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| 133 | pe2t(:,:) = rn_dy |
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| 134 | !! ==> END |
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| 135 | |
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| 136 | pe1u(:,:) = pe1t(:,:) ; pe2u(:,:) = pe2t(:,:) |
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| 137 | pe1v(:,:) = pe1t(:,:) ; pe2v(:,:) = pe2t(:,:) |
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| 138 | pe1f(:,:) = pe1t(:,:) ; pe2f(:,:) = pe2t(:,:) |
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| 139 | |
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| 140 | ! ! NO reduction of grid size in some straits |
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| 141 | ke1e2u_v = 0 ! ==>> u_ & v_surfaces will be computed in dom_ghr routine |
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| 142 | pe1e2u(:,:) = 0._wp ! CAUTION: set to zero to avoid error with some compilers that |
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| 143 | pe1e2v(:,:) = 0._wp ! require an initialization of INTENT(out) arguments |
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| 144 | ! |
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| 145 | ! |
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| 146 | ! !== Coriolis parameter ==! |
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| 147 | kff = 1 ! indicate not to compute Coriolis parameter afterward |
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| 148 | ! |
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| 149 | IF( ln_corio ) THEN |
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| 150 | zbeta = 2._wp * omega * COS( rad * rn_ppgphi0 ) / ra |
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| 151 | zf0 = 2._wp * omega * SIN( rad * rn_ppgphi0 ) |
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| 152 | pff_f(:,:) = zf0 + zbeta * pphif(:,:) * 1.e+3 |
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| 153 | pff_t(:,:) = zf0 + zbeta * pphit(:,:) * 1.e+3 |
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| 154 | ELSE |
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| 155 | pff_f(:,:) = 0. |
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| 156 | pff_t(:,:) = 0. |
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| 157 | ENDIF |
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| 158 | ! |
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| 159 | END SUBROUTINE usr_def_hgr |
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| 160 | |
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| 161 | !!====================================================================== |
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| 162 | END MODULE usrdef_hgr |
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