[2800] | 1 | MODULE obcdyn |
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[2888] | 2 | #if defined key_obc |
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| 3 | !!================================================================================= |
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[2800] | 4 | !! *** MODULE obcdyn *** |
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[2888] | 5 | !! Ocean dynamics: Radiation of velocities on each open boundary |
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| 6 | !!================================================================================= |
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| 7 | |
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| 8 | !!--------------------------------------------------------------------------------- |
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| 9 | !! obc_dyn : call the subroutine for each open boundary |
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| 10 | !! obc_dyn_east : radiation of the east open boundary velocities |
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| 11 | !! obc_dyn_west : radiation of the west open boundary velocities |
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| 12 | !! obc_dyn_north : radiation of the north open boundary velocities |
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| 13 | !! obc_dyn_south : radiation of the south open boundary velocities |
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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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[2800] | 18 | USE oce ! ocean dynamics and tracers |
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| 19 | USE dom_oce ! ocean space and time domain |
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[2888] | 20 | USE phycst ! physical constants |
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[2800] | 21 | USE obc_oce ! ocean open boundary conditions |
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[2888] | 22 | USE lbclnk ! ??? |
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| 23 | USE lib_mpp ! ??? |
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| 24 | USE in_out_manager ! I/O manager |
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| 25 | USE dynspg_oce |
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[2800] | 26 | |
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| 27 | IMPLICIT NONE |
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| 28 | PRIVATE |
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| 29 | |
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[2888] | 30 | !! * Accessibility |
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| 31 | PUBLIC obc_dyn ! routine called in dynspg_flt (free surface case) |
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[2800] | 32 | |
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[2888] | 33 | !! * Module variables |
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| 34 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 35 | |
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| 36 | INTEGER :: & ! ... boundary space indices |
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| 37 | nib = 1, & ! nib = boundary point |
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| 38 | nibm = 2, & ! nibm = 1st interior point |
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| 39 | nibm2 = 3, & ! nibm2 = 2nd interior point |
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| 40 | ! ... boundary time indices |
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| 41 | nit = 1, & ! nit = now |
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| 42 | nitm = 2, & ! nitm = before |
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| 43 | nitm2 = 3 ! nitm2 = before-before |
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| 44 | |
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| 45 | REAL(wp) :: rtaue , rtauw , rtaun , rtaus , & |
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| 46 | rtauein, rtauwin, rtaunin, rtausin |
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| 47 | |
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| 48 | !!--------------------------------------------------------------------------------- |
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| 49 | |
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[2800] | 50 | CONTAINS |
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| 51 | |
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[2888] | 52 | SUBROUTINE obc_dyn ( kt ) |
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| 53 | !!------------------------------------------------------------------------------ |
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| 54 | !! SUBROUTINE obc_dyn |
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| 55 | !! ******************** |
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| 56 | !! ** Purpose : |
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| 57 | !! Compute dynamics (u,v) at the open boundaries. |
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| 58 | !! if defined key_dynspg_flt: |
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| 59 | !! this routine is called by dynspg_flt and updates |
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| 60 | !! ua, va which are the actual velocities (not trends) |
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[2800] | 61 | !! |
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[2888] | 62 | !! The logical variable lp_obc_east, and/or lp_obc_west, and/or lp_obc_north, |
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| 63 | !! and/or lp_obc_south allow the user to determine which boundary is an |
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| 64 | !! open one (must be done in the param_obc.h90 file). |
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[2800] | 65 | !! |
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[2888] | 66 | !! ** Reference : |
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| 67 | !! Marchesiello P., 1995, these de l'universite J. Fourier, Grenoble, France. |
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| 68 | !! |
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| 69 | !! History : |
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| 70 | !! ! 95-03 (J.-M. Molines) Original, SPEM |
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| 71 | !! ! 97-07 (G. Madec, J.-M. Molines) addition |
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| 72 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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| 73 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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[2800] | 74 | !!---------------------------------------------------------------------- |
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[2888] | 75 | !! * Arguments |
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| 76 | INTEGER, INTENT( in ) :: kt |
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| 77 | |
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| 78 | !!---------------------------------------------------------------------- |
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| 79 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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| 80 | !! $Id: obcdyn.F90 1528 2009-07-23 14:38:47Z rblod $ |
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| 81 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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| 82 | !!---------------------------------------------------------------------- |
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| 83 | |
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| 84 | ! 0. Local constant initialization |
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| 85 | ! -------------------------------- |
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| 86 | |
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| 87 | IF( kt == nit000 .OR. ln_rstart) THEN |
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| 88 | ! ... Boundary restoring coefficient |
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| 89 | rtaue = 2. * rdt / rdpeob |
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| 90 | rtauw = 2. * rdt / rdpwob |
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| 91 | rtaun = 2. * rdt / rdpnob |
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| 92 | rtaus = 2. * rdt / rdpsob |
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| 93 | ! ... Boundary restoring coefficient for inflow ( all boundaries) |
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| 94 | rtauein = 2. * rdt / rdpein |
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| 95 | rtauwin = 2. * rdt / rdpwin |
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| 96 | rtaunin = 2. * rdt / rdpnin |
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| 97 | rtausin = 2. * rdt / rdpsin |
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| 98 | END IF |
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| 99 | |
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| 100 | IF( lp_obc_east ) CALL obc_dyn_east ( kt ) |
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| 101 | IF( lp_obc_west ) CALL obc_dyn_west ( kt ) |
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| 102 | IF( lp_obc_north ) CALL obc_dyn_north( kt ) |
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| 103 | IF( lp_obc_south ) CALL obc_dyn_south( kt ) |
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| 104 | |
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| 105 | IF( lk_mpp ) THEN |
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| 106 | IF( kt >= nit000+3 .AND. ln_rstart ) THEN |
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| 107 | CALL lbc_lnk( ub, 'U', -1. ) |
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| 108 | CALL lbc_lnk( vb, 'V', -1. ) |
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| 109 | END IF |
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| 110 | CALL lbc_lnk( ua, 'U', -1. ) |
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| 111 | CALL lbc_lnk( va, 'V', -1. ) |
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| 112 | ENDIF |
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| 113 | |
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| 114 | END SUBROUTINE obc_dyn |
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| 115 | |
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| 116 | |
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| 117 | SUBROUTINE obc_dyn_east ( kt ) |
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| 118 | !!------------------------------------------------------------------------------ |
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| 119 | !! *** SUBROUTINE obc_dyn_east *** |
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| 120 | !! |
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| 121 | !! ** Purpose : |
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| 122 | !! Apply the radiation algorithm on east OBC velocities ua, va using the |
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| 123 | !! phase velocities calculated in obc_rad_east subroutine in obcrad.F90 module |
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| 124 | !! If the logical lfbceast is .TRUE., there is no radiation but only fixed OBC |
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[2800] | 125 | !! |
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[2888] | 126 | !! History : |
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| 127 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
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| 128 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
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| 129 | !! ! 97-12 (M. Imbard) Mpp adaptation |
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| 130 | !! ! 00-06 (J.-M. Molines) |
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| 131 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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| 132 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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| 133 | !!------------------------------------------------------------------------------ |
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| 134 | !! * Arguments |
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| 135 | INTEGER, INTENT( in ) :: kt |
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| 136 | |
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| 137 | !! * Local declaration |
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| 138 | REAL(wp) :: z05cx, ztau, zin |
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| 139 | !!------------------------------------------------------------------------------ |
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| 140 | |
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| 141 | ! 1. First three time steps and more if lfbceast is .TRUE. |
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| 142 | ! In that case open boundary conditions are FIXED. |
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| 143 | ! -------------------------------------------------------- |
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| 144 | |
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| 145 | IF( ( kt < nit000+3 .AND. .NOT.ln_rstart ) .OR. lfbceast .OR. lk_dynspg_exp ) THEN |
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| 146 | |
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| 147 | ! 1.1 U zonal velocity |
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| 148 | ! -------------------- |
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| 149 | DO ji = nie0, nie1 |
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| 150 | DO jk = 1, jpkm1 |
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| 151 | DO jj = 1, jpj |
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| 152 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-uemsk(jj,jk)) + & |
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| 153 | uemsk(jj,jk)*ufoe(jj,jk) |
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| 154 | END DO |
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| 155 | END DO |
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| 156 | END DO |
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| 157 | |
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| 158 | ! 1.2 V meridional velocity |
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| 159 | ! ------------------------- |
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| 160 | DO ji = nie0+1, nie1+1 |
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| 161 | DO jk = 1, jpkm1 |
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| 162 | DO jj = 1, jpj |
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| 163 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vemsk(jj,jk)) + & |
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| 164 | vfoe(jj,jk)*vemsk(jj,jk) |
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| 165 | END DO |
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| 166 | END DO |
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| 167 | END DO |
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| 168 | |
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| 169 | ELSE |
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| 170 | |
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| 171 | ! 2. Beyond the fourth time step if lfbceast is .FALSE. |
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| 172 | ! ----------------------------------------------------- |
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| 173 | |
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| 174 | ! 2.1. u-component of the velocity |
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| 175 | ! --------------------------------- |
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| 176 | ! |
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| 177 | ! nibm2 nibm nib |
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| 178 | ! | nibm | nib |/// |
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| 179 | ! | | | | |/// |
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| 180 | ! jj-line --f----v----f----v----f--- |
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| 181 | ! | | | | |/// |
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| 182 | ! | | |/// |
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| 183 | ! jj-line u T u T u/// |
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| 184 | ! | | |/// |
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| 185 | ! | | | | |/// |
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| 186 | ! jpieob-2 jpieob-1 jpieob |
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| 187 | ! | | |
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| 188 | ! jpieob-1 jpieob |
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| 189 | ! |
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| 190 | ! ... If free surface formulation: |
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| 191 | ! ... radiative conditions on the total part + relaxation toward climatology |
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| 192 | ! ... (jpjedp1, jpjefm1),jpieob |
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| 193 | DO ji = nie0, nie1 |
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| 194 | DO jk = 1, jpkm1 |
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| 195 | DO jj = 1, jpj |
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| 196 | z05cx = u_cxebnd(jj,jk) |
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| 197 | z05cx = z05cx / e1t(ji,jj) |
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| 198 | z05cx = min( z05cx, 1. ) |
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| 199 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
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| 200 | ! > 0, outflow zin=1, ztau=rtaue |
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| 201 | zin = sign( 1., z05cx ) |
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| 202 | zin = 0.5*( zin + abs(zin) ) |
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| 203 | ! ... for inflow rtauein is used for relaxation coefficient else rtaue |
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| 204 | ztau = (1.-zin ) * rtauein + zin * rtaue |
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| 205 | z05cx = z05cx * zin |
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| 206 | ! ... update ua with radiative or climatological velocity |
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| 207 | ua(ji,jj,jk) = ua(ji,jj,jk) * ( 1. - uemsk(jj,jk) ) + & |
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| 208 | uemsk(jj,jk) * ( ( 1. - z05cx - ztau ) & |
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| 209 | * uebnd(jj,jk,nib ,nitm) + 2.*z05cx & |
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| 210 | * uebnd(jj,jk,nibm,nit ) + ztau * ufoe (jj,jk) ) & |
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| 211 | / (1. + z05cx) |
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| 212 | END DO |
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| 213 | END DO |
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| 214 | END DO |
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| 215 | |
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| 216 | ! 2.2 v-component of the velocity |
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| 217 | ! ------------------------------- |
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| 218 | ! |
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| 219 | ! nibm2 nibm nib |
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| 220 | ! | nibm | nib///|/// |
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| 221 | ! | | | |////|/// |
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| 222 | ! jj-line --v----f----v----f----v--- |
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| 223 | ! | | | |////|/// |
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| 224 | ! | | | |////|/// |
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| 225 | ! | jpieob-1 | jpieob /|/// |
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| 226 | ! | | | |
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| 227 | ! jpieob-1 jpieob jpieob+1 |
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| 228 | ! |
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| 229 | ! ... radiative condition |
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| 230 | ! ... (jpjedp1, jpjefm1), jpieob+1 |
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| 231 | DO ji = nie0+1, nie1+1 |
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| 232 | DO jk = 1, jpkm1 |
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| 233 | DO jj = 1, jpj |
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| 234 | z05cx = v_cxebnd(jj,jk) |
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| 235 | z05cx = z05cx / e1f(ji-1,jj) |
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| 236 | z05cx = min( z05cx, 1. ) |
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| 237 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
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| 238 | ! > 0, outflow zin=1, ztau=rtaue |
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| 239 | zin = sign( 1., z05cx ) |
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| 240 | zin = 0.5*( zin + abs(zin) ) |
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| 241 | ! ... for inflow rtauein is used for relaxation coefficient else rtaue |
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| 242 | ztau = (1.-zin ) * rtauein + zin * rtaue |
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| 243 | z05cx = z05cx * zin |
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| 244 | ! ... update va with radiative or climatological velocity |
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| 245 | va(ji,jj,jk) = va(ji,jj,jk) * (1. - vemsk(jj,jk) ) + & |
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| 246 | vemsk(jj,jk) * ( ( 1. - z05cx - ztau ) & |
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| 247 | * vebnd(jj,jk,nib ,nitm) + 2.*z05cx & |
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| 248 | * vebnd(jj,jk,nibm,nit ) + ztau * vfoe(jj,jk) ) & |
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| 249 | / (1. + z05cx) |
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| 250 | END DO |
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| 251 | END DO |
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| 252 | END DO |
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| 253 | |
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| 254 | END IF |
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| 255 | |
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| 256 | END SUBROUTINE obc_dyn_east |
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| 257 | |
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| 258 | |
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| 259 | SUBROUTINE obc_dyn_west ( kt ) |
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| 260 | !!------------------------------------------------------------------------------ |
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| 261 | !! *** SUBROUTINE obc_dyn_west *** |
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| 262 | !! |
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| 263 | !! ** Purpose : |
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| 264 | !! Apply the radiation algorithm on west OBC velocities ua, va using the |
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| 265 | !! phase velocities calculated in obc_rad_west subroutine in obcrad.F90 module |
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| 266 | !! If the logical lfbcwest is .TRUE., there is no radiation but only fixed OBC |
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[2800] | 267 | !! |
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[2888] | 268 | !! History : |
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| 269 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
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| 270 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
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| 271 | !! ! 97-12 (M. Imbard) Mpp adaptation |
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| 272 | !! ! 00-06 (J.-M. Molines) |
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| 273 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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| 274 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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| 275 | !!------------------------------------------------------------------------------ |
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| 276 | !! * Arguments |
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| 277 | INTEGER, INTENT( in ) :: kt |
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| 278 | |
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| 279 | !! * Local declaration |
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| 280 | REAL(wp) :: z05cx, ztau, zin |
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| 281 | !!------------------------------------------------------------------------------ |
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| 282 | |
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| 283 | ! 1. First three time steps and more if lfbcwest is .TRUE. |
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| 284 | ! In that case open boundary conditions are FIXED. |
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| 285 | ! -------------------------------------------------------- |
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| 286 | |
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| 287 | IF( ( kt < nit000+3 .AND. .NOT.ln_rstart ) .OR. lfbcwest .OR. lk_dynspg_exp ) THEN |
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| 288 | |
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| 289 | ! 1.1 U zonal velocity |
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| 290 | ! --------------------- |
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| 291 | DO ji = niw0, niw1 |
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| 292 | DO jk = 1, jpkm1 |
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| 293 | DO jj = 1, jpj |
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| 294 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-uwmsk(jj,jk)) + & |
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| 295 | uwmsk(jj,jk)*ufow(jj,jk) |
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| 296 | END DO |
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| 297 | END DO |
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| 298 | END DO |
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| 299 | |
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| 300 | ! 1.2 V meridional velocity |
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| 301 | ! ------------------------- |
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| 302 | DO ji = niw0, niw1 |
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| 303 | DO jk = 1, jpkm1 |
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| 304 | DO jj = 1, jpj |
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| 305 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vwmsk(jj,jk)) + & |
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| 306 | vfow(jj,jk)*vwmsk(jj,jk) |
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| 307 | END DO |
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| 308 | END DO |
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| 309 | END DO |
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| 310 | |
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| 311 | ELSE |
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| 312 | |
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| 313 | ! 2. Beyond the fourth time step if lfbcwest is .FALSE. |
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| 314 | ! ----------------------------------------------------- |
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| 315 | |
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| 316 | ! 2.1. u-component of the velocity |
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| 317 | ! --------------------------------- |
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| 318 | ! |
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| 319 | ! nib nibm nibm2 |
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| 320 | ! ///| nib | nibm | |
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| 321 | ! ///| | | | | |
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| 322 | ! ---f----v----f----v----f-- jj-line |
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| 323 | ! ///| | | | | |
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| 324 | ! ///| | | |
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| 325 | ! ///u T u T u jj-line |
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| 326 | ! ///| | | |
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| 327 | ! ///| | | | | |
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| 328 | ! jpiwob jpiwob+1 jpiwob+2 |
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| 329 | ! | | |
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| 330 | ! jpiwob+1 jpiwob+2 |
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| 331 | ! |
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| 332 | ! ... If free surface formulation: |
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| 333 | ! ... radiative conditions on the total part + relaxation toward climatology |
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| 334 | ! ... (jpjwdp1, jpjwfm1), jpiwob |
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| 335 | DO ji = niw0, niw1 |
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| 336 | DO jk = 1, jpkm1 |
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| 337 | DO jj = 1, jpj |
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| 338 | z05cx = u_cxwbnd(jj,jk) |
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| 339 | z05cx = z05cx / e1t(ji+1,jj) |
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| 340 | z05cx = max( z05cx, -1. ) |
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| 341 | ! ... z05c > 0, inflow zin=0, ztau=1 |
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| 342 | ! =< 0, outflow zin=1, ztau=rtauw |
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| 343 | zin = sign( 1., -1. * z05cx ) |
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| 344 | zin = 0.5*( zin + abs(zin) ) |
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| 345 | ztau = (1.-zin )* rtauwin + zin * rtauw |
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| 346 | z05cx = z05cx * zin |
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| 347 | ! ... update un with radiative or climatological velocity |
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| 348 | ua(ji,jj,jk) = ua(ji,jj,jk) * ( 1. - uwmsk(jj,jk) ) + & |
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| 349 | uwmsk(jj,jk) * ( ( 1. + z05cx - ztau ) & |
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| 350 | * uwbnd(jj,jk,nib ,nitm) - 2.*z05cx & |
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| 351 | * uwbnd(jj,jk,nibm,nit ) + ztau * ufow (jj,jk) ) & |
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| 352 | / (1. - z05cx) |
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| 353 | END DO |
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| 354 | END DO |
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| 355 | END DO |
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| 356 | |
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| 357 | ! 2.2 v-component of the velocity |
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| 358 | ! ------------------------------- |
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| 359 | ! |
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| 360 | ! nib nibm nibm2 |
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| 361 | ! ///|///nib | nibm | nibm2 |
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| 362 | ! ///|////| | | | | | |
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| 363 | ! ---v----f----v----f----v----f----v-- jj-line |
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| 364 | ! ///|////| | | | | | |
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| 365 | ! ///|////| | | | | | |
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| 366 | ! jpiwob jpiwob+1 jpiwob+2 |
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| 367 | ! | | | |
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| 368 | ! jpiwob jpiwob+1 jpiwob+2 |
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| 369 | ! |
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| 370 | ! ... radiative condition plus Raymond-Kuo |
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| 371 | ! ... (jpjwdp1, jpjwfm1),jpiwob |
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| 372 | DO ji = niw0, niw1 |
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| 373 | DO jk = 1, jpkm1 |
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| 374 | DO jj = 1, jpj |
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| 375 | z05cx = v_cxwbnd(jj,jk) |
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| 376 | z05cx = z05cx / e1f(ji,jj) |
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| 377 | z05cx = max( z05cx, -1. ) |
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| 378 | ! ... z05cx > 0, inflow zin=0, ztau=1 |
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| 379 | ! =< 0, outflow zin=1, ztau=rtauw |
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| 380 | zin = sign( 1., -1. * z05cx ) |
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| 381 | zin = 0.5*( zin + abs(zin) ) |
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| 382 | ztau = (1.-zin )*rtauwin + zin * rtauw |
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| 383 | z05cx = z05cx * zin |
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| 384 | ! ... update va with radiative or climatological velocity |
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| 385 | va(ji,jj,jk) = va(ji,jj,jk) * (1. - vwmsk(jj,jk) ) + & |
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| 386 | vwmsk(jj,jk) * ( ( 1. + z05cx - ztau ) & |
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| 387 | * vwbnd(jj,jk,nib ,nitm) - 2.*z05cx & |
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| 388 | * vwbnd(jj,jk,nibm,nit ) + ztau * vfow (jj,jk) ) & |
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| 389 | / (1. - z05cx) |
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| 390 | END DO |
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| 391 | END DO |
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| 392 | END DO |
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| 393 | |
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| 394 | END IF |
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| 395 | |
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| 396 | END SUBROUTINE obc_dyn_west |
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| 397 | |
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| 398 | SUBROUTINE obc_dyn_north ( kt ) |
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| 399 | !!------------------------------------------------------------------------------ |
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| 400 | !! SUBROUTINE obc_dyn_north |
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| 401 | !! ************************* |
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| 402 | !! ** Purpose : |
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| 403 | !! Apply the radiation algorithm on north OBC velocities ua, va using the |
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| 404 | !! phase velocities calculated in obc_rad_north subroutine in obcrad.F90 module |
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| 405 | !! If the logical lfbcnorth is .TRUE., there is no radiation but only fixed OBC |
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[2800] | 406 | !! |
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[2888] | 407 | !! History : |
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| 408 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
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| 409 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
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| 410 | !! ! 97-12 (M. Imbard) Mpp adaptation |
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| 411 | !! ! 00-06 (J.-M. Molines) |
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| 412 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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| 413 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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| 414 | !!------------------------------------------------------------------------------ |
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| 415 | !! * Arguments |
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| 416 | INTEGER, INTENT( in ) :: kt |
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[2800] | 417 | |
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[2888] | 418 | !! * Local declaration |
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| 419 | REAL(wp) :: z05cx, ztau, zin |
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| 420 | !!------------------------------------------------------------------------------ |
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| 421 | |
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| 422 | ! 1. First three time steps and more if lfbcnorth is .TRUE. |
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| 423 | ! In that case open boundary conditions are FIXED. |
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| 424 | ! --------------------------------------------------------- |
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| 425 | |
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| 426 | IF( ( kt < nit000+3 .AND. .NOT.ln_rstart ) .OR. lfbcnorth .OR. lk_dynspg_exp ) THEN |
---|
| 427 | |
---|
| 428 | ! 1.1 U zonal velocity |
---|
| 429 | ! -------------------- |
---|
| 430 | DO jj = njn0+1, njn1+1 |
---|
| 431 | DO jk = 1, jpkm1 |
---|
| 432 | DO ji = 1, jpi |
---|
| 433 | ua(ji,jj,jk)= ua(ji,jj,jk) * (1.-unmsk(ji,jk)) + & |
---|
| 434 | ufon(ji,jk)*unmsk(ji,jk) |
---|
| 435 | END DO |
---|
| 436 | END DO |
---|
| 437 | END DO |
---|
| 438 | |
---|
| 439 | ! 1.2 V meridional velocity |
---|
| 440 | ! ------------------------- |
---|
| 441 | DO jj = njn0, njn1 |
---|
| 442 | DO jk = 1, jpkm1 |
---|
| 443 | DO ji = 1, jpi |
---|
| 444 | va(ji,jj,jk)= va(ji,jj,jk) * (1.-vnmsk(ji,jk)) + & |
---|
| 445 | vfon(ji,jk)*vnmsk(ji,jk) |
---|
| 446 | END DO |
---|
| 447 | END DO |
---|
| 448 | END DO |
---|
| 449 | |
---|
| 450 | ELSE |
---|
| 451 | |
---|
| 452 | ! 2. Beyond the fourth time step if lfbcnorth is .FALSE. |
---|
| 453 | ! ------------------------------------------------------ |
---|
| 454 | |
---|
| 455 | ! 2.1. u-component of the velocity |
---|
| 456 | ! -------------------------------- |
---|
| 457 | ! |
---|
| 458 | ! ji-row |
---|
| 459 | ! | |
---|
| 460 | ! nib ///u////// jpjnob + 1 |
---|
| 461 | ! /////|////// |
---|
| 462 | ! nib -----f----- jpjnob |
---|
| 463 | ! | |
---|
| 464 | ! nibm-- u ---- jpjnob |
---|
| 465 | ! | |
---|
| 466 | ! nibm -----f----- jpjnob-1 |
---|
| 467 | ! | |
---|
| 468 | ! nibm2-- u ---- jpjnob-1 |
---|
| 469 | ! | |
---|
| 470 | ! nibm2 -----f----- jpjnob-2 |
---|
| 471 | ! | |
---|
| 472 | ! |
---|
| 473 | ! ... radiative condition |
---|
| 474 | ! ... jpjnob+1,(jpindp1, jpinfm1) |
---|
| 475 | DO jj = njn0+1, njn1+1 |
---|
| 476 | DO jk = 1, jpkm1 |
---|
| 477 | DO ji = 1, jpi |
---|
| 478 | z05cx= u_cynbnd(ji,jk) |
---|
| 479 | z05cx = z05cx / e2f(ji, jj-1) |
---|
| 480 | z05cx = min( z05cx, 1. ) |
---|
| 481 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
---|
| 482 | ! > 0, outflow zin=1, ztau=rtaun |
---|
| 483 | zin = sign( 1., z05cx ) |
---|
| 484 | zin = 0.5*( zin + abs(zin) ) |
---|
| 485 | ! ... for inflow rtaunin is used for relaxation coefficient else rtaun |
---|
| 486 | ztau = (1.-zin ) * rtaunin + zin * rtaun |
---|
| 487 | ! ... for u, when inflow, ufon is prescribed |
---|
| 488 | z05cx = z05cx * zin |
---|
| 489 | ! ... update un with radiative or climatological velocity |
---|
| 490 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-unmsk(ji,jk)) + & |
---|
| 491 | unmsk(ji,jk) * ( ( 1. - z05cx - ztau ) & |
---|
| 492 | * unbnd(ji,jk,nib ,nitm) + 2.*z05cx & |
---|
| 493 | * unbnd(ji,jk,nibm,nit ) + ztau * ufon (ji,jk) ) & |
---|
| 494 | / (1. + z05cx) |
---|
| 495 | END DO |
---|
| 496 | END DO |
---|
| 497 | END DO |
---|
| 498 | |
---|
| 499 | ! 2.2 v-component of the velocity |
---|
| 500 | ! ------------------------------- |
---|
| 501 | ! |
---|
| 502 | ! ji-row ji-row |
---|
| 503 | ! | | |
---|
| 504 | ! /////|///////////////// |
---|
| 505 | ! nib -----f----v----f---- jpjnob |
---|
| 506 | ! | | |
---|
| 507 | ! nib - u -- T -- u ---- jpjnob |
---|
| 508 | ! | | |
---|
| 509 | ! nibm -----f----v----f---- jpjnob-1 |
---|
| 510 | ! | | |
---|
| 511 | ! nibm -- u -- T -- u --- jpjnob-1 |
---|
| 512 | ! | | |
---|
| 513 | ! nibm2 -----f----v----f---- jpjnob-2 |
---|
| 514 | ! | | |
---|
| 515 | ! |
---|
| 516 | ! ... Free surface formulation: |
---|
| 517 | ! ... radiative conditions on the total part + relaxation toward climatology |
---|
| 518 | ! ... jpjnob,(jpindp1, jpinfm1) |
---|
| 519 | DO jj = njn0, njn1 |
---|
| 520 | DO jk = 1, jpkm1 |
---|
| 521 | DO ji = 1, jpi |
---|
| 522 | ! ... 2* gradj(v) (T-point i=nibm, time mean) |
---|
| 523 | z05cx = v_cynbnd(ji,jk) |
---|
| 524 | z05cx = z05cx / e2t(ji,jj) |
---|
| 525 | z05cx = min( z05cx, 1. ) |
---|
| 526 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
---|
| 527 | ! > 0, outflow zin=1, ztau=rtaun |
---|
| 528 | zin = sign( 1., z05cx ) |
---|
| 529 | zin = 0.5*( zin + abs(zin) ) |
---|
| 530 | ! ... for inflow rtaunin is used for relaxation coefficient else rtaun |
---|
| 531 | ztau = (1.-zin ) * rtaunin + zin * rtaun |
---|
| 532 | z05cx = z05cx * zin |
---|
| 533 | ! ... update va with radiative or climatological velocity |
---|
| 534 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vnmsk(ji,jk)) + & |
---|
| 535 | vnmsk(ji,jk) * ( ( 1. - z05cx - ztau ) & |
---|
| 536 | * vnbnd(ji,jk,nib ,nitm) + 2.*z05cx & |
---|
| 537 | * vnbnd(ji,jk,nibm,nit ) + ztau * vfon (ji,jk) ) & |
---|
| 538 | / (1. + z05cx) |
---|
| 539 | END DO |
---|
| 540 | END DO |
---|
| 541 | END DO |
---|
[2800] | 542 | END IF |
---|
| 543 | |
---|
[2888] | 544 | END SUBROUTINE obc_dyn_north |
---|
[2865] | 545 | |
---|
[2888] | 546 | SUBROUTINE obc_dyn_south ( kt ) |
---|
| 547 | !!------------------------------------------------------------------------------ |
---|
| 548 | !! SUBROUTINE obc_dyn_south |
---|
| 549 | !! ************************* |
---|
| 550 | !! ** Purpose : |
---|
| 551 | !! Apply the radiation algorithm on south OBC velocities ua, va using the |
---|
| 552 | !! phase velocities calculated in obc_rad_south subroutine in obcrad.F90 module |
---|
| 553 | !! If the logical lfbcsouth is .TRUE., there is no radiation but only fixed OBC |
---|
| 554 | !! |
---|
| 555 | !! History : |
---|
| 556 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
---|
| 557 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
---|
| 558 | !! ! 97-12 (M. Imbard) Mpp adaptation |
---|
| 559 | !! ! 00-06 (J.-M. Molines) |
---|
| 560 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
---|
| 561 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
---|
| 562 | !!------------------------------------------------------------------------------ |
---|
| 563 | !! * Arguments |
---|
| 564 | INTEGER, INTENT( in ) :: kt |
---|
[2865] | 565 | |
---|
[2888] | 566 | !! * Local declaration |
---|
| 567 | REAL(wp) :: z05cx, ztau, zin |
---|
[2800] | 568 | |
---|
[2888] | 569 | !!------------------------------------------------------------------------------ |
---|
| 570 | !! OPA 8.5, LODYC-IPSL (2002) |
---|
| 571 | !!------------------------------------------------------------------------------ |
---|
[2800] | 572 | |
---|
[2888] | 573 | ! 1. First three time steps and more if lfbcsouth is .TRUE. |
---|
| 574 | ! In that case open boundary conditions are FIXED. |
---|
| 575 | ! --------------------------------------------------------- |
---|
[2800] | 576 | |
---|
[2888] | 577 | IF( ( kt < nit000+3 .AND. .NOT.ln_rstart ) .OR. lfbcsouth .OR. lk_dynspg_exp ) THEN |
---|
[2800] | 578 | |
---|
[2888] | 579 | ! 1.1 U zonal velocity |
---|
| 580 | ! -------------------- |
---|
| 581 | DO jj = njs0, njs1 |
---|
| 582 | DO jk = 1, jpkm1 |
---|
| 583 | DO ji = 1, jpi |
---|
| 584 | ua(ji,jj,jk)= ua(ji,jj,jk) * (1.-usmsk(ji,jk)) + & |
---|
| 585 | usmsk(ji,jk) * ufos(ji,jk) |
---|
| 586 | END DO |
---|
| 587 | END DO |
---|
| 588 | END DO |
---|
[2800] | 589 | |
---|
[2888] | 590 | ! 1.2 V meridional velocity |
---|
| 591 | ! ------------------------- |
---|
| 592 | DO jj = njs0, njs1 |
---|
| 593 | DO jk = 1, jpkm1 |
---|
| 594 | DO ji = 1, jpi |
---|
| 595 | va(ji,jj,jk)= va(ji,jj,jk) * (1.-vsmsk(ji,jk)) + & |
---|
| 596 | vsmsk(ji,jk) * vfos(ji,jk) |
---|
| 597 | END DO |
---|
| 598 | END DO |
---|
| 599 | END DO |
---|
[2800] | 600 | |
---|
[2888] | 601 | ELSE |
---|
[2800] | 602 | |
---|
[2888] | 603 | ! 2. Beyond the fourth time step if lfbcsouth is .FALSE. |
---|
| 604 | ! ------------------------------------------------------ |
---|
[2800] | 605 | |
---|
[2888] | 606 | ! 2.1. u-component of the velocity |
---|
| 607 | ! -------------------------------- |
---|
| 608 | ! |
---|
| 609 | ! ji-row |
---|
| 610 | ! | |
---|
| 611 | ! nibm2 -----f----- jpjsob +2 |
---|
| 612 | ! | |
---|
| 613 | ! nibm2 -- u ---- jpjsob +2 |
---|
| 614 | ! | |
---|
| 615 | ! nibm -----f----- jpjsob +1 |
---|
| 616 | ! | |
---|
| 617 | ! nibm -- u ---- jpjsob +1 |
---|
| 618 | ! | |
---|
| 619 | ! nib -----f----- jpjsob |
---|
| 620 | ! /////|////// |
---|
| 621 | ! nib ////u///// jpjsob |
---|
| 622 | ! |
---|
| 623 | ! ... radiative condition plus Raymond-Kuo |
---|
| 624 | ! ... jpjsob,(jpisdp1, jpisfm1) |
---|
| 625 | DO jj = njs0, njs1 |
---|
| 626 | DO jk = 1, jpkm1 |
---|
| 627 | DO ji = 1, jpi |
---|
| 628 | z05cx= u_cysbnd(ji,jk) |
---|
| 629 | z05cx = z05cx / e2f(ji, jj) |
---|
| 630 | z05cx = max( z05cx, -1. ) |
---|
| 631 | ! ... z05cx > 0, inflow zin=0, ztau=1 |
---|
| 632 | ! =< 0, outflow zin=1, ztau=rtaus |
---|
| 633 | zin = sign( 1., -1. * z05cx ) |
---|
| 634 | zin = 0.5*( zin + abs(zin) ) |
---|
| 635 | ztau = (1.-zin ) * rtausin + zin * rtaus |
---|
| 636 | z05cx = z05cx * zin |
---|
| 637 | ! ... update ua with radiative or climatological velocity |
---|
| 638 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-usmsk(ji,jk)) + & |
---|
| 639 | usmsk(ji,jk) * ( ( 1. + z05cx - ztau ) & |
---|
| 640 | * usbnd(ji,jk,nib ,nitm) - 2.*z05cx & |
---|
| 641 | * usbnd(ji,jk,nibm,nit ) + ztau * ufos (ji,jk) ) & |
---|
| 642 | / (1. - z05cx) |
---|
| 643 | END DO |
---|
| 644 | END DO |
---|
| 645 | END DO |
---|
[2800] | 646 | |
---|
[2888] | 647 | ! 2.2 v-component of the velocity |
---|
| 648 | ! ------------------------------- |
---|
| 649 | ! |
---|
| 650 | ! ji-row ji-row |
---|
| 651 | ! | | |
---|
| 652 | ! nibm2 -----f----v----f---- jpjsob+2 |
---|
| 653 | ! | | |
---|
| 654 | ! nibm - u -- T -- u ---- jpjsob+2 |
---|
| 655 | ! | | |
---|
| 656 | ! nibm -----f----v----f---- jpjsob+1 |
---|
| 657 | ! | | |
---|
| 658 | ! nib -- u -- T -- u --- jpjsob+1 |
---|
| 659 | ! | | |
---|
| 660 | ! nib -----f----v----f---- jpjsob |
---|
| 661 | ! ///////////////////// |
---|
| 662 | ! |
---|
| 663 | ! ... Free surface formulation: |
---|
| 664 | ! ... radiative conditions on the total part + relaxation toward climatology |
---|
| 665 | ! ... jpjsob,(jpisdp1,jpisfm1) |
---|
| 666 | DO jj = njs0, njs1 |
---|
| 667 | DO jk = 1, jpkm1 |
---|
| 668 | DO ji = 1, jpi |
---|
| 669 | z05cx = v_cysbnd(ji,jk) |
---|
| 670 | z05cx = z05cx / e2t(ji,jj+1) |
---|
| 671 | z05cx = max( z05cx, -1. ) |
---|
| 672 | ! ... z05c > 0, inflow zin=0, ztau=1 |
---|
| 673 | ! =< 0, outflow zin=1, ztau=rtaus |
---|
| 674 | zin = sign( 1., -1. * z05cx ) |
---|
| 675 | zin = 0.5*( zin + abs(zin) ) |
---|
| 676 | ztau = (1.-zin )*rtausin + zin * rtaus |
---|
| 677 | z05cx = z05cx * zin |
---|
| 678 | ! ... update va with radiative or climatological velocity |
---|
| 679 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vsmsk(ji,jk)) + & |
---|
| 680 | vsmsk(ji,jk) * ( ( 1. + z05cx - ztau ) & |
---|
| 681 | * vsbnd(ji,jk,nib ,nitm) - 2.*z05cx & |
---|
| 682 | * vsbnd(ji,jk,nibm,nit ) + ztau * vfos (ji,jk) ) & |
---|
| 683 | / (1. - z05cx) |
---|
| 684 | END DO |
---|
| 685 | END DO |
---|
| 686 | END DO |
---|
| 687 | END IF |
---|
[2800] | 688 | |
---|
[2888] | 689 | END SUBROUTINE obc_dyn_south |
---|
[2800] | 690 | #else |
---|
[2888] | 691 | !!================================================================================= |
---|
| 692 | !! *** MODULE obcdyn *** |
---|
| 693 | !! Ocean dynamics: Radiation of velocities on each open boundary |
---|
| 694 | !!================================================================================= |
---|
[2800] | 695 | CONTAINS |
---|
[2888] | 696 | |
---|
| 697 | SUBROUTINE obc_dyn |
---|
| 698 | ! No open boundaries ==> empty routine |
---|
[2800] | 699 | END SUBROUTINE obc_dyn |
---|
| 700 | #endif |
---|
| 701 | |
---|
| 702 | END MODULE obcdyn |
---|