| 1 | MODULE dommsk |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE dommsk *** |
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| 4 | !! Ocean initialization : domain land/sea mask |
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| 5 | !!====================================================================== |
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| 6 | !! History : OPA ! 1987-07 (G. Madec) Original code |
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| 7 | !! 6.0 ! 1993-03 (M. Guyon) symetrical conditions (M. Guyon) |
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| 8 | !! 7.0 ! 1996-01 (G. Madec) suppression of common work arrays |
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| 9 | !! - ! 1996-05 (G. Madec) mask computed from tmask |
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| 10 | !! 8.0 ! 1997-02 (G. Madec) mesh information put in domhgr.F |
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| 11 | !! 8.1 ! 1997-07 (G. Madec) modification of kbat and fmask |
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| 12 | !! - ! 1998-05 (G. Roullet) free surface |
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| 13 | !! 8.2 ! 2000-03 (G. Madec) no slip accurate |
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| 14 | !! - ! 2001-09 (J.-M. Molines) Open boundaries |
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| 15 | !! NEMO 1.0 ! 2002-08 (G. Madec) F90: Free form and module |
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| 16 | !! - ! 2005-11 (V. Garnier) Surface pressure gradient organization |
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| 17 | !! 3.2 ! 2009-07 (R. Benshila) Suppression of rigid-lid option |
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| 18 | !! 3.6 ! 2015-05 (P. Mathiot) ISF: add wmask,wumask and wvmask |
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| 19 | !! 4.0 ! 2016-06 (G. Madec, S. Flavoni) domain configuration / user defined interface |
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| 20 | !!---------------------------------------------------------------------- |
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| 21 | |
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| 22 | !!---------------------------------------------------------------------- |
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| 23 | !! dom_msk : compute land/ocean mask |
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| 24 | !!---------------------------------------------------------------------- |
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| 25 | USE oce ! ocean dynamics and tracers |
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| 26 | USE dom_oce ! ocean space and time domain |
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| 27 | USE usrdef_fmask ! user defined fmask |
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| 28 | USE bdy_oce ! open boundary |
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| 29 | ! |
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| 30 | USE in_out_manager ! I/O manager |
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| 31 | USE iom ! IOM library |
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| 32 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 33 | USE lib_mpp ! Massively Parallel Processing library |
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| 34 | USE iom ! For shlat2d |
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| 35 | USE fldread ! for sn_shlat2d |
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| 36 | |
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| 37 | IMPLICIT NONE |
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| 38 | PRIVATE |
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| 39 | |
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| 40 | PUBLIC dom_msk ! routine called by inidom.F90 |
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| 41 | |
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| 42 | ! !!* Namelist namlbc : lateral boundary condition * |
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| 43 | REAL(wp) :: rn_shlat ! type of lateral boundary condition on velocity |
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| 44 | LOGICAL, PUBLIC :: ln_vorlat ! consistency of vorticity boundary condition |
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| 45 | ! with analytical eqs. |
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| 46 | |
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| 47 | !! * Substitutions |
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| 48 | # include "vectopt_loop_substitute.h90" |
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| 49 | !!---------------------------------------------------------------------- |
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| 50 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 51 | !! $Id$ |
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| 52 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 53 | !!---------------------------------------------------------------------- |
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| 54 | CONTAINS |
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| 55 | |
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| 56 | SUBROUTINE dom_msk( k_top, k_bot ) |
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| 57 | !!--------------------------------------------------------------------- |
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| 58 | !! *** ROUTINE dom_msk *** |
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| 59 | !! |
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| 60 | !! ** Purpose : Compute land/ocean mask arrays at tracer points, hori- |
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| 61 | !! zontal velocity points (u & v), vorticity points (f) points. |
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| 62 | !! |
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| 63 | !! ** Method : The ocean/land mask at t-point is deduced from ko_top |
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| 64 | !! and ko_bot, the indices of the fist and last ocean t-levels which |
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| 65 | !! are either defined in usrdef_zgr or read in zgr_read. |
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| 66 | !! The velocity masks (umask, vmask, wmask, wumask, wvmask) |
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| 67 | !! are deduced from a product of the two neighboring tmask. |
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| 68 | !! The vorticity mask (fmask) is deduced from tmask taking |
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| 69 | !! into account the choice of lateral boundary condition (rn_shlat) : |
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| 70 | !! rn_shlat = 0, free slip (no shear along the coast) |
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| 71 | !! rn_shlat = 2, no slip (specified zero velocity at the coast) |
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| 72 | !! 0 < rn_shlat < 2, partial slip | non-linear velocity profile |
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| 73 | !! 2 < rn_shlat, strong slip | in the lateral boundary layer |
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| 74 | !! |
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| 75 | !! tmask_i : interior ocean mask at t-point, i.e. excluding duplicated |
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| 76 | !! rows/lines due to cyclic or North Fold boundaries as well |
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| 77 | !! as MPP halos. |
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| 78 | !! tmask_h : halo mask at t-point, i.e. excluding duplicated rows/lines |
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| 79 | !! due to cyclic or North Fold boundaries as well as MPP halos. |
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| 80 | !! |
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| 81 | !! ** Action : tmask, umask, vmask, wmask, wumask, wvmask : land/ocean mask |
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| 82 | !! at t-, u-, v- w, wu-, and wv-points (=0. or 1.) |
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| 83 | !! fmask : land/ocean mask at f-point (=0., or =1., or |
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| 84 | !! =rn_shlat along lateral boundaries) |
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| 85 | !! tmask_i : interior ocean mask |
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| 86 | !! tmask_h : halo mask |
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| 87 | !! ssmask , ssumask, ssvmask, ssfmask : 2D ocean mask |
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| 88 | !!---------------------------------------------------------------------- |
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| 89 | INTEGER, DIMENSION(:,:), INTENT(in) :: k_top, k_bot ! first and last ocean level |
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| 90 | ! |
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| 91 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 92 | INTEGER :: iif, iil ! local integers |
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| 93 | INTEGER :: ijf, ijl ! - - |
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| 94 | INTEGER :: iktop, ikbot ! - - |
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| 95 | INTEGER :: ios, inum |
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| 96 | !! |
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| 97 | REAL(wp) :: zshlat !: locally modified shlat for some strait |
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| 98 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: zshlat2d |
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| 99 | LOGICAL :: ln_shlat2d |
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| 100 | CHARACTER(len = 256) :: cn_shlat2d_file, cn_shlat2d_var |
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| 101 | !! |
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| 102 | NAMELIST/namlbc/ rn_shlat, ln_vorlat, ln_shlat2d, cn_shlat2d_file, cn_shlat2d_var |
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| 103 | NAMELIST/nambdy/ ln_bdy ,nb_bdy, ln_coords_file, cn_coords_file, & |
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| 104 | & ln_mask_file, cn_mask_file, cn_dyn2d, nn_dyn2d_dta, & |
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| 105 | & cn_dyn3d, nn_dyn3d_dta, cn_tra, nn_tra_dta, & |
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| 106 | & ln_tra_dmp, ln_dyn3d_dmp, rn_time_dmp, rn_time_dmp_out, & |
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| 107 | & cn_ice, nn_ice_dta, & |
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| 108 | & rn_ice_tem, rn_ice_sal, rn_ice_age, & |
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| 109 | & ln_vol, nn_volctl, nn_rimwidth, nb_jpk_bdy |
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| 110 | !!--------------------------------------------------------------------- |
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| 111 | ! |
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| 112 | REWIND( numnam_ref ) ! Namelist namlbc in reference namelist : Lateral momentum boundary condition |
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| 113 | READ ( numnam_ref, namlbc, IOSTAT = ios, ERR = 901 ) |
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| 114 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namlbc in reference namelist', lwp ) |
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| 115 | REWIND( numnam_cfg ) ! Namelist namlbc in configuration namelist : Lateral momentum boundary condition |
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| 116 | READ ( numnam_cfg, namlbc, IOSTAT = ios, ERR = 902 ) |
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| 117 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namlbc in configuration namelist', lwp ) |
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| 118 | IF(lwm) WRITE ( numond, namlbc ) |
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| 119 | |
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| 120 | IF(lwp) THEN ! control print |
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| 121 | WRITE(numout,*) |
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| 122 | WRITE(numout,*) 'dommsk : ocean mask ' |
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| 123 | WRITE(numout,*) '~~~~~~' |
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| 124 | WRITE(numout,*) ' Namelist namlbc' |
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| 125 | WRITE(numout,*) ' lateral momentum boundary cond. rn_shlat = ',rn_shlat |
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| 126 | WRITE(numout,*) ' consistency with analytical form ln_vorlat = ',ln_vorlat |
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| 127 | ENDIF |
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| 128 | ! |
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| 129 | IF(lwp) WRITE(numout,*) |
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| 130 | |
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| 131 | IF ( ln_shlat2d ) THEN |
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| 132 | IF(lwp) WRITE(numout,*) ' READ shlat as a 2D coefficient in a file ' |
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| 133 | ALLOCATE( zshlat2d(jpi,jpj) ) |
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| 134 | CALL iom_open(TRIM(cn_shlat2d_file), inum) |
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| 135 | CALL iom_get (inum, jpdom_data, TRIM(cn_shlat2d_var), zshlat2d, 1) ! |
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| 136 | CALL iom_close(inum) |
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| 137 | ELSE |
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| 138 | IF ( rn_shlat == 0. ) THEN ; IF(lwp) WRITE(numout,*) ' ==>>> ocean lateral free-slip' |
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| 139 | ELSEIF ( rn_shlat == 2. ) THEN ; IF(lwp) WRITE(numout,*) ' ==>>> ocean lateral no-slip' |
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| 140 | ELSEIF ( 0. < rn_shlat .AND. rn_shlat < 2. ) THEN ; IF(lwp) WRITE(numout,*) ' ==>>> ocean lateral partial-slip' |
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| 141 | ELSEIF ( 2. < rn_shlat ) THEN ; IF(lwp) WRITE(numout,*) ' ==>>> ocean lateral strong-slip' |
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| 142 | ELSE |
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| 143 | CALL ctl_stop( 'dom_msk: wrong value for rn_shlat (i.e. a negalive value). We stop.' ) |
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| 144 | ENDIF |
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| 145 | ENDIF |
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| 146 | |
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| 147 | ! Ocean/land mask at t-point (computed from ko_top and ko_bot) |
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| 148 | ! ---------------------------- |
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| 149 | ! |
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| 150 | tmask(:,:,:) = 0._wp |
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| 151 | DO jj = 1, jpj |
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| 152 | DO ji = 1, jpi |
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| 153 | iktop = k_top(ji,jj) |
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| 154 | ikbot = k_bot(ji,jj) |
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| 155 | IF( iktop /= 0 ) THEN ! water in the column |
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| 156 | tmask(ji,jj,iktop:ikbot ) = 1._wp |
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| 157 | ENDIF |
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| 158 | END DO |
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| 159 | END DO |
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| 160 | !SF add here lbc_lnk: bug not still understood : cause now domain configuration is read ! |
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| 161 | !!gm I don't understand why... |
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| 162 | CALL lbc_lnk( 'dommsk', tmask , 'T', 1._wp ) ! Lateral boundary conditions |
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| 163 | |
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| 164 | ! Mask corrections for bdy (read in mppini2) |
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| 165 | REWIND( numnam_ref ) ! Namelist nambdy in reference namelist :Unstructured open boundaries |
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| 166 | READ ( numnam_ref, nambdy, IOSTAT = ios, ERR = 903) |
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| 167 | 903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nambdy in reference namelist', lwp ) |
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| 168 | REWIND( numnam_cfg ) ! Namelist nambdy in configuration namelist :Unstructured open boundaries |
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| 169 | READ ( numnam_cfg, nambdy, IOSTAT = ios, ERR = 904 ) |
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| 170 | 904 IF( ios > 0 ) CALL ctl_nam ( ios , 'nambdy in configuration namelist', lwp ) |
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| 171 | ! ------------------------ |
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| 172 | IF ( ln_bdy .AND. ln_mask_file ) THEN |
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| 173 | CALL iom_open( cn_mask_file, inum ) |
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| 174 | CALL iom_get ( inum, jpdom_data, 'bdy_msk', bdytmask(:,:) ) |
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| 175 | CALL iom_close( inum ) |
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| 176 | DO jk = 1, jpkm1 |
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| 177 | DO jj = 1, jpj |
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| 178 | DO ji = 1, jpi |
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| 179 | tmask(ji,jj,jk) = tmask(ji,jj,jk) * bdytmask(ji,jj) |
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| 180 | END DO |
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| 181 | END DO |
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| 182 | END DO |
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| 183 | ENDIF |
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| 184 | |
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| 185 | ! Ocean/land mask at u-, v-, and f-points (computed from tmask) |
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| 186 | ! ---------------------------------------- |
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| 187 | ! NB: at this point, fmask is designed for free slip lateral boundary condition |
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| 188 | DO jk = 1, jpk |
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| 189 | DO jj = 1, jpjm1 |
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| 190 | DO ji = 1, fs_jpim1 ! vector loop |
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| 191 | umask(ji,jj,jk) = tmask(ji,jj ,jk) * tmask(ji+1,jj ,jk) |
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| 192 | vmask(ji,jj,jk) = tmask(ji,jj ,jk) * tmask(ji ,jj+1,jk) |
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| 193 | END DO |
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| 194 | DO ji = 1, jpim1 ! NO vector opt. |
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| 195 | fmask(ji,jj,jk) = tmask(ji,jj ,jk) * tmask(ji+1,jj ,jk) & |
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| 196 | & * tmask(ji,jj+1,jk) * tmask(ji+1,jj+1,jk) |
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| 197 | END DO |
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| 198 | END DO |
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| 199 | END DO |
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| 200 | CALL lbc_lnk_multi( 'dommsk', umask, 'U', 1., vmask, 'V', 1., fmask, 'F', 1. ) ! Lateral boundary conditions |
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| 201 | |
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| 202 | ! Ocean/land mask at wu-, wv- and w points (computed from tmask) |
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| 203 | !----------------------------------------- |
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| 204 | wmask (:,:,1) = tmask(:,:,1) ! surface |
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| 205 | wumask(:,:,1) = umask(:,:,1) |
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| 206 | wvmask(:,:,1) = vmask(:,:,1) |
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| 207 | DO jk = 2, jpk ! interior values |
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| 208 | wmask (:,:,jk) = tmask(:,:,jk) * tmask(:,:,jk-1) |
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| 209 | wumask(:,:,jk) = umask(:,:,jk) * umask(:,:,jk-1) |
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| 210 | wvmask(:,:,jk) = vmask(:,:,jk) * vmask(:,:,jk-1) |
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| 211 | END DO |
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| 212 | |
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| 213 | |
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| 214 | ! Ocean/land column mask at t-, u-, and v-points (i.e. at least 1 wet cell in the vertical) |
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| 215 | ! ---------------------------------------------- |
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| 216 | ssmask (:,:) = MAXVAL( tmask(:,:,:), DIM=3 ) |
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| 217 | ssumask(:,:) = MAXVAL( umask(:,:,:), DIM=3 ) |
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| 218 | ssvmask(:,:) = MAXVAL( vmask(:,:,:), DIM=3 ) |
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| 219 | |
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| 220 | |
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| 221 | ! Interior domain mask (used for global sum) |
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| 222 | ! -------------------- |
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| 223 | ! |
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| 224 | iif = nn_hls ; iil = nlci - nn_hls + 1 |
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| 225 | ijf = nn_hls ; ijl = nlcj - nn_hls + 1 |
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| 226 | ! |
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| 227 | ! ! halo mask : 0 on the halo and 1 elsewhere |
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| 228 | tmask_h(:,:) = 1._wp |
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| 229 | tmask_h( 1 :iif, : ) = 0._wp ! first columns |
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| 230 | tmask_h(iil:jpi, : ) = 0._wp ! last columns (including mpp extra columns) |
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| 231 | tmask_h( : , 1 :ijf) = 0._wp ! first rows |
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| 232 | tmask_h( : ,ijl:jpj) = 0._wp ! last rows (including mpp extra rows) |
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| 233 | ! |
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| 234 | ! ! north fold mask |
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| 235 | tpol(1:jpiglo) = 1._wp |
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| 236 | fpol(1:jpiglo) = 1._wp |
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| 237 | IF( jperio == 3 .OR. jperio == 4 ) THEN ! T-point pivot |
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| 238 | tpol(jpiglo/2+1:jpiglo) = 0._wp |
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| 239 | fpol( 1 :jpiglo) = 0._wp |
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| 240 | IF( mjg(nlej) == jpjglo ) THEN ! only half of the nlcj-1 row for tmask_h |
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| 241 | DO ji = iif+1, iil-1 |
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| 242 | tmask_h(ji,nlej-1) = tmask_h(ji,nlej-1) * tpol(mig(ji)) |
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| 243 | END DO |
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| 244 | ENDIF |
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| 245 | ENDIF |
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| 246 | ! |
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| 247 | IF( jperio == 5 .OR. jperio == 6 ) THEN ! F-point pivot |
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| 248 | tpol( 1 :jpiglo) = 0._wp |
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| 249 | fpol(jpiglo/2+1:jpiglo) = 0._wp |
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| 250 | ENDIF |
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| 251 | ! |
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| 252 | ! ! interior mask : 2D ocean mask x halo mask |
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| 253 | tmask_i(:,:) = ssmask(:,:) * tmask_h(:,:) |
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| 254 | |
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| 255 | |
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| 256 | ! Lateral boundary conditions on velocity (modify fmask) |
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| 257 | ! --------------------------------------- |
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| 258 | IF( rn_shlat /= 0 .or. ln_shlat2d ) THEN ! Not free-slip lateral boundary condition everywhere |
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| 259 | ! |
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| 260 | DO jk = 1, jpk |
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| 261 | IF ( ln_shlat2d ) THEN |
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| 262 | DO jj = 2, jpjm1 |
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| 263 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 264 | IF( fmask(ji,jj,jk) == 0._wp ) THEN |
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| 265 | fmask(ji,jj,jk) = zshlat2d(ji,jj) * MIN( 1._wp , MAX( umask(ji,jj,jk), umask(ji,jj+1,jk), & |
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| 266 | & vmask(ji,jj,jk), vmask(ji+1,jj,jk) ) ) |
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| 267 | ENDIF |
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| 268 | END DO |
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| 269 | END DO |
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| 270 | ELSE |
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| 271 | DO jj = 2, jpjm1 |
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| 272 | DO ji = fs_2, fs_jpim1 ! vector opt. |
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| 273 | IF( fmask(ji,jj,jk) == 0._wp ) THEN |
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| 274 | fmask(ji,jj,jk) = rn_shlat * MIN( 1._wp , MAX( umask(ji,jj,jk), umask(ji,jj+1,jk), & |
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| 275 | & vmask(ji,jj,jk), vmask(ji+1,jj,jk) ) ) |
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| 276 | ENDIF |
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| 277 | END DO |
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| 278 | END DO |
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| 279 | ENDIF |
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| 280 | DO jj = 2, jpjm1 |
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| 281 | IF( fmask(1,jj,jk) == 0._wp ) THEN |
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| 282 | fmask(1 ,jj,jk) = rn_shlat * MIN( 1._wp , MAX( vmask(2,jj,jk), umask(1,jj+1,jk), umask(1,jj,jk) ) ) |
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| 283 | ENDIF |
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| 284 | IF( fmask(jpi,jj,jk) == 0._wp ) THEN |
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| 285 | fmask(jpi,jj,jk) = rn_shlat * MIN( 1._wp , MAX( umask(jpi,jj+1,jk), vmask(jpim1,jj,jk), umask(jpi,jj-1,jk) ) ) |
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| 286 | ENDIF |
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| 287 | END DO |
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| 288 | DO ji = 2, jpim1 |
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| 289 | IF( fmask(ji,1,jk) == 0._wp ) THEN |
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| 290 | fmask(ji, 1 ,jk) = rn_shlat * MIN( 1._wp , MAX( vmask(ji+1,1,jk), umask(ji,2,jk), vmask(ji,1,jk) ) ) |
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| 291 | ENDIF |
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| 292 | IF( fmask(ji,jpj,jk) == 0._wp ) THEN |
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| 293 | fmask(ji,jpj,jk) = rn_shlat * MIN( 1._wp , MAX( vmask(ji+1,jpj,jk), vmask(ji-1,jpj,jk), umask(ji,jpjm1,jk) ) ) |
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| 294 | ENDIF |
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| 295 | END DO |
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| 296 | #if defined key_agrif |
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| 297 | IF( .NOT. AGRIF_Root() ) THEN |
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| 298 | IF ((nbondi == 1).OR.(nbondi == 2)) fmask(nlci-1 , : ,jk) = 0.e0 ! east |
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| 299 | IF ((nbondi == -1).OR.(nbondi == 2)) fmask(1 , : ,jk) = 0.e0 ! west |
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| 300 | IF ((nbondj == 1).OR.(nbondj == 2)) fmask(: ,nlcj-1 ,jk) = 0.e0 ! north |
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| 301 | IF ((nbondj == -1).OR.(nbondj == 2)) fmask(: ,1 ,jk) = 0.e0 ! south |
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| 302 | ENDIF |
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| 303 | #endif |
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| 304 | END DO |
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| 305 | ! |
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| 306 | IF( ln_shlat2d ) DEALLOCATE( zshlat2d ) |
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| 307 | ! |
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| 308 | CALL lbc_lnk( 'dommsk', fmask, 'F', 1._wp ) ! Lateral boundary conditions on fmask |
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| 309 | ! |
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| 310 | ! CAUTION : The fmask may be further modified in dyn_vor_init ( dynvor.F90 ) depending on ln_vorlat |
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| 311 | ! |
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| 312 | ENDIF |
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| 313 | |
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| 314 | ! User defined alteration of fmask (use to reduce ocean transport in specified straits) |
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| 315 | ! -------------------------------- |
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| 316 | ! |
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| 317 | CALL usr_def_fmask( cn_cfg, nn_cfg, fmask ) |
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| 318 | ! |
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| 319 | END SUBROUTINE dom_msk |
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| 320 | |
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| 321 | !!====================================================================== |
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| 322 | END MODULE dommsk |
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