[9302] | 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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[9403] | 5 | !! === CANAL configuration === |
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[9302] | 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 ! 2017-11 (J. Chanut) Original code |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | |
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| 12 | !!---------------------------------------------------------------------- |
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[9403] | 13 | !! usr_def_hgr : initialize the horizontal mesh for CANAL configuration |
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[9302] | 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, rn_0xratio, rn_0yratio, rn_ppgphi0, nn_fcase |
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| 19 | ! 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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[12740] | 28 | !! * Substitutions |
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| 29 | # include "do_loop_substitute.h90" |
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[9302] | 30 | !!---------------------------------------------------------------------- |
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[10073] | 31 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[9302] | 32 | !! $Id$ |
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[10073] | 33 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[9302] | 34 | !!---------------------------------------------------------------------- |
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| 35 | CONTAINS |
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| 36 | |
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| 37 | SUBROUTINE usr_def_hgr( plamt , plamu , plamv , plamf , & ! geographic position (required) |
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| 38 | & pphit , pphiu , pphiv , pphif , & ! |
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| 39 | & kff , pff_f , pff_t , & ! Coriolis parameter (if domain not on the sphere) |
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| 40 | & pe1t , pe1u , pe1v , pe1f , & ! scale factors (required) |
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| 41 | & pe2t , pe2u , pe2v , pe2f , & ! |
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| 42 | & ke1e2u_v , pe1e2u , pe1e2v ) ! u- & v-surfaces (if gridsize reduction is used in strait(s)) |
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| 43 | !!---------------------------------------------------------------------- |
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| 44 | !! *** ROUTINE usr_def_hgr *** |
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| 45 | !! |
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| 46 | !! ** Purpose : user defined mesh and Coriolis parameter |
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| 47 | !! |
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| 48 | !! ** Method : set all intent(out) argument to a proper value |
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[9403] | 49 | !! CANAL configuration : beta-plance with uniform grid spacing (rn_dx) |
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[9302] | 50 | !! |
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| 51 | !! ** Action : - define longitude & latitude of t-, u-, v- and f-points (in degrees) |
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| 52 | !! - define coriolis parameter at f-point if the domain in not on the sphere (on beta-plane) |
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| 53 | !! - define i- & j-scale factors at t-, u-, v- and f-points (in meters) |
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| 54 | !! - define u- & v-surfaces (if gridsize reduction is used in some straits) (in m2) |
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| 55 | !!---------------------------------------------------------------------- |
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| 56 | REAL(wp), DIMENSION(:,:), INTENT(out) :: plamt, plamu, plamv, plamf ! longitude outputs [degrees] |
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| 57 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pphit, pphiu, pphiv, pphif ! latitude outputs [degrees] |
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| 58 | INTEGER , INTENT(out) :: kff ! =1 Coriolis parameter computed here, =0 otherwise |
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| 59 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pff_f, pff_t ! Coriolis factor at f-point [1/s] |
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| 60 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe1t, pe1u, pe1v, pe1f ! i-scale factors [m] |
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| 61 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe2t, pe2u, pe2v, pe2f ! j-scale factors [m] |
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| 62 | INTEGER , INTENT(out) :: ke1e2u_v ! =1 u- & v-surfaces computed here, =0 otherwise |
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| 63 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe1e2u, pe1e2v ! u- & v-surfaces (if reduction in strait) [m2] |
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| 64 | ! |
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[13286] | 65 | INTEGER :: ji, jj ! dummy loop indices |
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[14433] | 66 | INTEGER :: ii0, ij0 ! dummy loop indices |
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| 67 | REAL(wp) :: zbeta, zf0 |
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[13286] | 68 | REAL(wp) :: zti, ztj ! local scalars |
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[9302] | 69 | !!------------------------------------------------------------------------------- |
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| 70 | ! |
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| 71 | IF(lwp) WRITE(numout,*) |
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[9403] | 72 | IF(lwp) WRITE(numout,*) 'usr_def_hgr : CANAL configuration bassin' |
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[9302] | 73 | IF(lwp) WRITE(numout,*) |
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| 74 | IF(lwp) WRITE(numout,*) ' Beta-plane with regular grid-spacing' |
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| 75 | IF(lwp) WRITE(numout,*) ' given by rn_dx and rn_dy' |
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| 76 | ! |
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| 77 | ! |
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| 78 | ! Position coordinates (in kilometers) |
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| 79 | ! ========== |
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[14433] | 80 | ii0 = NINT( REAL(Ni0glo, wp) * rn_0xratio ) |
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| 81 | ij0 = NINT( REAL(Nj0glo, wp) * rn_0yratio ) |
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[9302] | 82 | |
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| 83 | #if defined key_agrif |
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| 84 | ! ! let lower left longitude and latitude from parent |
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| 85 | IF (.NOT.Agrif_root()) THEN |
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[14433] | 86 | to be coded... |
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[9302] | 87 | ENDIF |
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| 88 | #endif |
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| 89 | |
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[14223] | 90 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
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[14433] | 91 | zti = REAL( mig0(ji)-ii0, wp ) ! =0 at i=ii0 in the global grid without halos |
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| 92 | ztj = REAL( mjg0(jj)-ij0, wp ) ! =0 at i=ij0 in the global grid without halos |
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[12740] | 93 | |
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[14433] | 94 | plamt(ji,jj) = rn_dx * zti |
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| 95 | plamu(ji,jj) = rn_dx * ( zti + 0.5_wp ) |
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[12740] | 96 | plamv(ji,jj) = plamt(ji,jj) |
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| 97 | plamf(ji,jj) = plamu(ji,jj) |
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| 98 | |
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[14433] | 99 | pphit(ji,jj) = rn_dy * ztj |
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| 100 | pphiv(ji,jj) = rn_dy * ( ztj + 0.5_wp ) |
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[12740] | 101 | pphiu(ji,jj) = pphit(ji,jj) |
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| 102 | pphif(ji,jj) = pphiv(ji,jj) |
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| 103 | END_2D |
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[9302] | 104 | ! |
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| 105 | ! Horizontal scale factors (in meters) |
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| 106 | ! ====== |
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| 107 | pe1t(:,:) = rn_dx * 1.e+3 ; pe2t(:,:) = rn_dy * 1.e+3 |
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| 108 | pe1u(:,:) = rn_dx * 1.e+3 ; pe2u(:,:) = rn_dy * 1.e+3 |
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| 109 | pe1v(:,:) = rn_dx * 1.e+3 ; pe2v(:,:) = rn_dy * 1.e+3 |
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| 110 | pe1f(:,:) = rn_dx * 1.e+3 ; pe2f(:,:) = rn_dy * 1.e+3 |
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| 111 | |
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| 112 | ! ! NO reduction of grid size in some straits |
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| 113 | ke1e2u_v = 0 ! ==>> u_ & v_surfaces will be computed in dom_hgr routine |
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| 114 | pe1e2u(:,:) = 0._wp ! CAUTION: set to zero to avoid error with some compilers that |
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| 115 | pe1e2v(:,:) = 0._wp ! require an initialization of INTENT(out) arguments |
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| 116 | ! |
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| 117 | ! |
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| 118 | ! !== Coriolis parameter ==! |
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| 119 | kff = 1 ! indicate not to compute Coriolis parameter afterward |
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| 120 | ! |
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| 121 | SELECT CASE(nn_fcase) |
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| 122 | CASE(0) |
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| 123 | zf0 = 2._wp * omega * SIN( rad * rn_ppgphi0 ) |
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| 124 | pff_f(:,:) = zf0 |
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| 125 | pff_t(:,:) = zf0 |
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| 126 | CASE(1) |
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| 127 | zbeta = 2._wp * omega * COS( rad * rn_ppgphi0 ) / ra |
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| 128 | zf0 = 2._wp * omega * SIN( rad * rn_ppgphi0 ) |
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| 129 | pff_f(:,:) = zf0 + zbeta * pphif(:,:) * 1.e+3 |
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| 130 | pff_t(:,:) = zf0 + zbeta * pphit(:,:) * 1.e+3 |
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| 131 | CASE(2) |
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| 132 | pff_f(:,:) = 2._wp * omega * SIN( rad * ( rn_ppgphi0 + pphif(:,:)/110. ) ) |
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| 133 | pff_t(:,:) = 2._wp * omega * SIN( rad * ( rn_ppgphi0 + pphit(:,:)/110. ) ) |
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| 134 | END SELECT |
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| 135 | ! |
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| 136 | END SUBROUTINE usr_def_hgr |
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| 137 | |
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| 138 | !!====================================================================== |
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| 139 | END MODULE usrdef_hgr |
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