[367] | 1 | MODULE obcfla |
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| 2 | #if defined key_obc && defined key_dynspg_ts |
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| 3 | !!================================================================================= |
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| 4 | !! *** MODULE obcfla *** |
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| 5 | !! Ocean dynamics: Flather's algorithm at open boundaries for the time-splitting |
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| 6 | !!================================================================================= |
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| 7 | |
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| 8 | !!--------------------------------------------------------------------------------- |
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| 9 | !! obc_fla_ts : call the subroutine for each open boundary |
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| 10 | !! obc_fla_ts_east : Flather on the east open boundary velocities & ssh |
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| 11 | !! obc_fla_ts_west : Flather on the west open boundary velocities & ssh |
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| 12 | !! obc_fla_ts_north : Flather on the north open boundary velocities & ssh |
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| 13 | !! obc_fla_ts_south : Flather on the south open boundary velocities & ssh |
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| 14 | !!---------------------------------------------------------------------------------- |
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| 15 | |
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| 16 | !!---------------------------------------------------------------------------------- |
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| 17 | !! * Modules used |
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| 18 | USE oce ! ocean dynamics and tracers |
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| 19 | USE dom_oce ! ocean space and time domain |
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| 20 | USE dynspg_oce ! surface pressure gradient variables |
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| 21 | USE phycst ! physical constants |
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| 22 | USE obc_oce ! ocean open boundary conditions |
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| 23 | USE obcdta ! ocean open boundary conditions: climatology |
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| 24 | |
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| 25 | IMPLICIT NONE |
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| 26 | PRIVATE |
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| 27 | |
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| 28 | !! * Accessibility |
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| 29 | PUBLIC obc_fla_ts ! routine called in dynspg_ts (free surface time splitting case) |
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| 30 | |
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| 31 | !!--------------------------------------------------------------------------------- |
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| 32 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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[719] | 33 | !! $Header$ |
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[367] | 34 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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| 35 | !!--------------------------------------------------------------------------------- |
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| 36 | |
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| 37 | CONTAINS |
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| 38 | |
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| 39 | SUBROUTINE obc_fla_ts |
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| 40 | !!------------------------------------------------------------------------------ |
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| 41 | !! SUBROUTINE obc_fla_ts |
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| 42 | !! ********************** |
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| 43 | !! ** Purpose : |
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| 44 | !! Apply Flather's algorithm at open boundaries for the time-splitting |
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[374] | 45 | !! free surface case (barotropic variables) |
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[367] | 46 | !! |
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[374] | 47 | !! This routine is called in dynspg_ts.F90 routine |
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[367] | 48 | !! |
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| 49 | !! The logical variable lp_obc_east, and/or lp_obc_west, and/or lp_obc_north, |
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| 50 | !! and/or lp_obc_south allow the user to determine which boundary is an |
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[374] | 51 | !! open one (must be done in the obc_par.F90 file). |
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[367] | 52 | !! |
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| 53 | !! ** Reference : |
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| 54 | !! Flather, R. A., 1976, Mem. Soc. R. Sci. Liege, Ser. 6, 10, 141-164 |
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| 55 | !! |
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| 56 | !! History : |
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| 57 | !! 9.0 ! 05-12 (V. Garnier) original |
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| 58 | !!------------------------------------------------------------------------------ |
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| 59 | |
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| 60 | IF( lp_obc_east ) CALL obc_fla_ts_east |
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| 61 | IF( lp_obc_west ) CALL obc_fla_ts_west |
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| 62 | IF( lp_obc_north ) CALL obc_fla_ts_north |
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| 63 | IF( lp_obc_south ) CALL obc_fla_ts_south |
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| 64 | |
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| 65 | END SUBROUTINE obc_fla_ts |
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| 66 | |
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| 67 | |
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| 68 | SUBROUTINE obc_fla_ts_east |
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| 69 | !!------------------------------------------------------------------------------ |
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| 70 | !! *** SUBROUTINE obc_fla_ts_east *** |
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| 71 | !! |
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| 72 | !! ** Purpose : |
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| 73 | !! Apply Flather's algorithm on east OBC velocities ua, va |
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| 74 | !! Fix sea surface height (sshn_e) on east open boundary |
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| 75 | !! |
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| 76 | !! History : |
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| 77 | !! 9.0 ! 05-12 (V. Garnier) original |
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| 78 | !!------------------------------------------------------------------------------ |
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| 79 | !! * Local declaration |
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| 80 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 81 | !!------------------------------------------------------------------------------ |
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| 82 | |
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| 83 | DO ji = nie0, nie1 |
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| 84 | DO jk = 1, jpkm1 |
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| 85 | DO jj = 1, jpj |
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| 86 | ua_e(ji,jj) = ( ubtfoe(jj) + sqrt( grav*hu(ji,jj) ) & |
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| 87 | & * ( ( sshn_e(ji,jj) + sshn_e(ji+1,jj) ) * 0.5 & |
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| 88 | & - sshfoe(jj) ) ) * uemsk(jj,jk) |
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| 89 | END DO |
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| 90 | END DO |
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| 91 | END DO |
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| 92 | DO ji = nie0p1, nie1p1 |
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| 93 | DO jj = 1, jpj |
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| 94 | sshfoe_b(ji,jj) = sshfoe_b(ji,jj) + sqrt( grav*hur(ji,jj) ) & |
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| 95 | & * ( ( sshn_e(ji,jj) + sshn_e(ji+1,jj) ) * 0.5 & |
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| 96 | & - sshfoe(jj) ) * uemsk(jj,1) |
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| 97 | ssha_e(ji,jj) = ssha_e(ji,jj) * ( 1. - temsk(jj,1) ) & |
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| 98 | & + temsk(jj,1) * sshfoe(jj) |
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[475] | 99 | va_e(ji,jj) = vbtfoe(jj) * uemsk(jj,jk) |
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[367] | 100 | END DO |
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| 101 | END DO |
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| 102 | |
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| 103 | END SUBROUTINE obc_fla_ts_east |
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| 104 | |
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| 105 | |
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| 106 | SUBROUTINE obc_fla_ts_west |
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| 107 | !!------------------------------------------------------------------------------ |
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| 108 | !! *** SUBROUTINE obc_fla_ts_west *** |
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| 109 | !! |
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| 110 | !! ** Purpose : |
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| 111 | !! Apply Flather's algorithm on west OBC velocities ua, va |
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| 112 | !! Fix sea surface height (sshn_e) on west open boundary |
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| 113 | !! |
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| 114 | !! History : |
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| 115 | !! 9.0 ! 05-12 (V. Garnier) original |
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| 116 | !!------------------------------------------------------------------------------ |
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| 117 | !! * Local declaration |
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| 118 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 119 | !!------------------------------------------------------------------------------ |
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| 120 | |
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| 121 | DO ji = niw0, niw1 |
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| 122 | DO jk = 1, jpkm1 |
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| 123 | DO jj = 1, jpj |
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| 124 | ua_e(ji,jj) = ( ubtfow(jj) - sqrt( grav * hu(ji,jj) ) & |
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| 125 | & * ( ( sshn_e(ji,jj) + sshn_e(ji+1,jj) ) * 0.5 & |
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| 126 | & - sshfow(jj) ) ) * uwmsk(jj,jk) |
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| 127 | va_e(ji,jj) = vbtfow(jj) * uwmsk(jj,jk) |
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| 128 | END DO |
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| 129 | END DO |
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| 130 | DO jj = 1, jpj |
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| 131 | sshfow_b(ji,jj) = sshfow_b(ji,jj) - sqrt( grav * hur(ji,jj) ) & |
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| 132 | * ( ( sshn_e(ji,jj) + sshn_e(ji+1,jj) ) * 0.5 & |
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| 133 | - sshfow(jj) ) * uwmsk(jj,1) |
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| 134 | ssha_e(ji,jj) = ssha_e(ji,jj) * ( 1. - twmsk(jj,1) ) & |
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| 135 | & + twmsk(jj,1)*sshfow(jj) |
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| 136 | END DO |
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| 137 | END DO |
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| 138 | |
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| 139 | END SUBROUTINE obc_fla_ts_west |
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| 140 | |
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| 141 | SUBROUTINE obc_fla_ts_north |
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| 142 | !!------------------------------------------------------------------------------ |
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| 143 | !! SUBROUTINE obc_fla_ts_north |
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| 144 | !! ************************* |
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| 145 | !! ** Purpose : |
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| 146 | !! Apply Flather's algorithm on north OBC velocities ua, va |
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| 147 | !! Fix sea surface height (sshn_e) on north open boundary |
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| 148 | !! |
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| 149 | !! History : |
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| 150 | !! 9.0 ! 05-12 (V. Garnier) original |
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| 151 | !!------------------------------------------------------------------------------ |
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| 152 | !! * Local declaration |
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| 153 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 154 | !!------------------------------------------------------------------------------ |
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| 155 | |
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| 156 | DO jj = njn0, njn1 |
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| 157 | DO jk = 1, jpkm1 |
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| 158 | DO ji = 1, jpi |
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| 159 | va_e(ji,jj) = ( vbtfon(ji) + sqrt( grav * hv(ji,jj) ) & |
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| 160 | & * ( ( sshn_e(ji,jj) + sshn_e(ji,jj+1) ) * 0.5 & |
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| 161 | & - sshfon(ji) ) ) * vnmsk(ji,jk) |
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| 162 | END DO |
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| 163 | END DO |
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| 164 | END DO |
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| 165 | DO jj = njn0p1, njn1p1 |
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| 166 | DO ji = 1, jpi |
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| 167 | sshfon_b(ji,jj) = sshfon_b(ji,jj) + sqrt( grav * hvr(ji,jj) ) & |
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| 168 | & * ( ( sshn_e(ji,jj) + sshn_e(ji,jj+1) ) * 0.5 & |
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| 169 | & - sshfon(ji) ) * vnmsk(ji,1) |
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| 170 | ssha_e(ji,jj) = ssha_e(ji,jj) * ( 1. - tnmsk(ji,1) ) & |
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| 171 | & + sshfon(ji) * tnmsk(ji,1) |
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[475] | 172 | ua_e(ji,jj) = ubtfon(ji) * vnmsk(ji,jk) |
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[367] | 173 | END DO |
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| 174 | END DO |
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| 175 | |
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| 176 | END SUBROUTINE obc_fla_ts_north |
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| 177 | |
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| 178 | SUBROUTINE obc_fla_ts_south |
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| 179 | !!------------------------------------------------------------------------------ |
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| 180 | !! SUBROUTINE obc_fla_ts_south |
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| 181 | !! ************************* |
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| 182 | !! ** Purpose : |
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| 183 | !! Apply Flather's algorithm on south OBC velocities ua, va |
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| 184 | !! Fix sea surface height (sshn_e) on south open boundary |
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| 185 | !! |
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| 186 | !! History : |
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| 187 | !! 9.0 ! 05-12 (V. Garnier) original |
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| 188 | !!------------------------------------------------------------------------------ |
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| 189 | !! * Local declaration |
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| 190 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 191 | |
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| 192 | !!------------------------------------------------------------------------------ |
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| 193 | |
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| 194 | DO jj = njs0, njs1 |
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| 195 | DO jk = 1, jpkm1 |
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| 196 | DO ji = 1, jpi |
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| 197 | va_e(ji,jj) = ( vbtfos(ji) - sqrt( grav * hv(ji,jj) ) & |
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| 198 | & * ( ( sshn_e(ji,jj) + sshn_e(ji,jj+1) ) * 0.5 & |
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| 199 | & - sshfos(ji) ) ) * vsmsk(ji,jk) |
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| 200 | ua_e(ji,jj) = ubtfos(ji) * vsmsk(ji,jk) |
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| 201 | END DO |
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| 202 | END DO |
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| 203 | DO ji = 1, jpi |
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| 204 | sshfos_b(ji,jj) = sshfos_b(ji,jj) - sqrt( grav * hvr(ji,jj) ) & |
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| 205 | & * ( ( sshn_e(ji,jj) + sshn_e(ji,jj+1) ) * 0.5 & |
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| 206 | & - sshfos(ji) ) * vsmsk(ji,1) |
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| 207 | ssha_e(ji,jj) = ssha_e(ji,jj) * (1. - tsmsk(ji,1) ) & |
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| 208 | & + tsmsk(ji,1) * sshfos(ji) |
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| 209 | END DO |
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| 210 | END DO |
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| 211 | |
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| 212 | END SUBROUTINE obc_fla_ts_south |
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| 213 | #else |
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| 214 | !!================================================================================= |
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| 215 | !! *** MODULE obcfla *** |
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| 216 | !! Ocean dynamics: Flather's algorithm at open boundaries for the time-splitting |
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| 217 | !!================================================================================= |
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| 218 | CONTAINS |
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| 219 | |
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| 220 | SUBROUTINE obc_fla_ts |
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| 221 | WRITE(*,*) 'obc_fla_ts: You should not have seen this print! error?' |
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| 222 | END SUBROUTINE obc_fla_ts |
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| 223 | #endif |
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| 224 | |
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| 225 | END MODULE obcfla |
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