| 1 | MODULE obcdyn |
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| 2 | #if defined key_obc |
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| 3 | !!================================================================================= |
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| 4 | !! *** MODULE obcdyn *** |
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| 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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| 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 phycst ! physical constants |
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| 21 | USE obc_oce ! ocean open boundary conditions |
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| 22 | USE lbclnk ! ??? |
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| 23 | USE lib_mpp ! ??? |
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| 24 | USE dynspg_oce ! choice/control of key cpp for surface pressure gradient |
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| 25 | USE obccli ! ocean open boundary conditions: climatology |
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| 26 | USE in_out_manager ! I/O manager |
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| 27 | |
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| 28 | IMPLICIT NONE |
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| 29 | PRIVATE |
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| 30 | |
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| 31 | !! * Accessibility |
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| 32 | PUBLIC obc_dyn ! routine called in dynspg_flt (free surface case) |
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| 33 | ! routine called in dynnxt.F90 (rigid lid case) |
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| 34 | |
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| 35 | !! * Module variables |
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| 36 | INTEGER :: ji, jj, jk ! dummy loop indices |
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| 37 | |
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| 38 | INTEGER :: & ! ... boundary space indices |
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| 39 | nib = 1, & ! nib = boundary point |
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| 40 | nibm = 2, & ! nibm = 1st interior point |
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| 41 | nibm2 = 3, & ! nibm2 = 2nd interior point |
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| 42 | ! ... boundary time indices |
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| 43 | nit = 1, & ! nit = now |
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| 44 | nitm = 2, & ! nitm = before |
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| 45 | nitm2 = 3 ! nitm2 = before-before |
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| 46 | |
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| 47 | REAL(wp) :: rtaue , rtauw , rtaun , rtaus , & |
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| 48 | rtauein, rtauwin, rtaunin, rtausin |
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| 49 | |
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| 50 | LOGICAL :: ll_fbc |
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| 51 | |
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| 52 | !!--------------------------------------------------------------------------------- |
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| 53 | |
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| 54 | CONTAINS |
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| 55 | |
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| 56 | SUBROUTINE obc_dyn ( kt ) |
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| 57 | !!------------------------------------------------------------------------------ |
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| 58 | !! SUBROUTINE obc_dyn |
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| 59 | !! ******************** |
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| 60 | !! ** Purpose : |
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| 61 | !! Compute dynamics (u,v) at the open boundaries. |
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| 62 | !! if defined key_dynspg_flt: |
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| 63 | !! this routine is called by dynspg_flt and updates |
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| 64 | !! ua, va which are the actual velocities (not trends) |
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| 65 | !! else (rigid lid case) , |
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| 66 | !! this routine is called in dynnxt.F routine and updates ua, va. |
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| 67 | !! |
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| 68 | !! The logical variable lp_obc_east, and/or lp_obc_west, and/or lp_obc_north, |
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| 69 | !! and/or lp_obc_south allow the user to determine which boundary is an |
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| 70 | !! open one (must be done in the param_obc.h90 file). |
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| 71 | !! |
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| 72 | !! ** Reference : |
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| 73 | !! Marchesiello P., 1995, these de l'universite J. Fourier, Grenoble, France. |
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| 74 | !! |
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| 75 | !! History : |
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| 76 | !! ! 95-03 (J.-M. Molines) Original, SPEM |
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| 77 | !! ! 97-07 (G. Madec, J.-M. Molines) addition |
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| 78 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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| 79 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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| 80 | !!---------------------------------------------------------------------- |
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| 81 | !! * Arguments |
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| 82 | INTEGER, INTENT( in ) :: kt |
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| 83 | |
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| 84 | !!---------------------------------------------------------------------- |
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| 85 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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| 86 | !! $Id$ |
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| 87 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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| 88 | !!---------------------------------------------------------------------- |
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| 89 | |
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| 90 | ! 0. Local constant initialization |
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| 91 | ! -------------------------------- |
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| 92 | |
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| 93 | IF( kt == nit000 .OR. ln_rstart) THEN |
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| 94 | ! ... Boundary restoring coefficient |
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| 95 | rtaue = 2. * rdt / rdpeob |
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| 96 | rtauw = 2. * rdt / rdpwob |
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| 97 | rtaun = 2. * rdt / rdpnob |
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| 98 | rtaus = 2. * rdt / rdpsob |
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| 99 | ! ... Boundary restoring coefficient for inflow ( all boundaries) |
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| 100 | rtauein = 2. * rdt / rdpein |
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| 101 | rtauwin = 2. * rdt / rdpwin |
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| 102 | rtaunin = 2. * rdt / rdpnin |
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| 103 | rtausin = 2. * rdt / rdpsin |
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| 104 | END IF |
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| 105 | |
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| 106 | ll_fbc = ( ( ( kt < nit000+3 ) .AND. .NOT. ln_rstart ) .OR. lk_dynspg_exp ) |
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| 107 | |
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| 108 | IF ( cp_cfg == "indian" ) THEN |
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| 109 | ll_fbc = ( ( ( kt < nit000+30 ) .AND. .NOT. ln_obc_rstart ) .OR. lk_dynspg_exp ) |
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| 110 | ENDIF |
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| 111 | |
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| 112 | IF( lp_obc_east ) CALL obc_dyn_east !( kt ) |
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| 113 | IF( lp_obc_west ) CALL obc_dyn_west !( kt ) |
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| 114 | IF( lp_obc_north ) CALL obc_dyn_north!( kt ) |
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| 115 | IF( lp_obc_south ) CALL obc_dyn_south!( kt ) |
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| 116 | |
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| 117 | IF( lk_mpp ) THEN |
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| 118 | IF( kt >= nit000+3 .AND. ln_rstart ) THEN |
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| 119 | CALL lbc_lnk( ub, 'U', -1. ) |
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| 120 | CALL lbc_lnk( vb, 'V', -1. ) |
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| 121 | END IF |
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| 122 | CALL lbc_lnk( ua, 'U', -1. ) |
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| 123 | CALL lbc_lnk( va, 'V', -1. ) |
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| 124 | ENDIF |
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| 125 | |
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| 126 | END SUBROUTINE obc_dyn |
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| 127 | |
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| 128 | |
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| 129 | SUBROUTINE obc_dyn_east |
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| 130 | !!------------------------------------------------------------------------------ |
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| 131 | !! *** SUBROUTINE obc_dyn_east *** |
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| 132 | !! |
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| 133 | !! ** Purpose : |
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| 134 | !! Apply the radiation algorithm on east OBC velocities ua, va using the |
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| 135 | !! phase velocities calculated in obc_rad_east subroutine in obcrad.F90 module |
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| 136 | !! If the logical lfbceast is .TRUE., there is no radiation but only fixed OBC |
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| 137 | !! |
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| 138 | !! History : |
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| 139 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
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| 140 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
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| 141 | !! ! 97-12 (M. Imbard) Mpp adaptation |
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| 142 | !! ! 00-06 (J.-M. Molines) |
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| 143 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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| 144 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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| 145 | !!------------------------------------------------------------------------------ |
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| 146 | !! * Arguments |
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| 147 | |
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| 148 | !! * Local declaration |
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| 149 | REAL(wp) :: z05cx, ztau, zin |
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| 150 | !!------------------------------------------------------------------------------ |
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| 151 | |
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| 152 | ! 1. First three time steps and more if lfbceast is .TRUE. |
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| 153 | ! In that case open boundary conditions are FIXED. |
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| 154 | ! -------------------------------------------------------- |
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| 155 | |
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| 156 | IF ( ll_fbc .OR. lfbceast ) THEN |
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| 157 | |
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| 158 | ! 1.1 U zonal velocity |
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| 159 | ! -------------------- |
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| 160 | DO ji = nie0, nie1 |
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| 161 | DO jk = 1, jpkm1 |
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| 162 | DO jj = 1, jpj |
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| 163 | # if defined key_dynspg_rl |
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| 164 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-uemsk(jj,jk)) + & |
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| 165 | uemsk(jj,jk)*( ufoe(jj,jk) - hur (ji,jj) / e2u (ji,jj) & |
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| 166 | * ( bsfn(ji,jj) - bsfn(ji,jj-1) ) ) |
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| 167 | # else |
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| 168 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-uemsk(jj,jk)) + & |
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| 169 | uemsk(jj,jk)*ufoe(jj,jk) |
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| 170 | # endif |
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| 171 | END DO |
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| 172 | END DO |
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| 173 | END DO |
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| 174 | |
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| 175 | ! 1.2 V meridional velocity |
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| 176 | ! ------------------------- |
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| 177 | DO ji = nie0+1, nie1+1 |
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| 178 | DO jk = 1, jpkm1 |
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| 179 | DO jj = 1, jpj |
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| 180 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vemsk(jj,jk)) + & |
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| 181 | vfoe(jj,jk)*vemsk(jj,jk) |
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| 182 | END DO |
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| 183 | END DO |
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| 184 | END DO |
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| 185 | |
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| 186 | ELSE |
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| 187 | |
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| 188 | ! 2. Beyond the fourth time step if lfbceast is .FALSE. |
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| 189 | ! ----------------------------------------------------- |
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| 190 | |
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| 191 | ! 2.1. u-component of the velocity |
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| 192 | ! --------------------------------- |
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| 193 | ! |
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| 194 | ! nibm2 nibm nib |
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| 195 | ! | nibm | nib |/// |
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| 196 | ! | | | | |/// |
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| 197 | ! jj-line --f----v----f----v----f--- |
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| 198 | ! | | | | |/// |
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| 199 | ! | | |/// |
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| 200 | ! jj-line u T u T u/// |
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| 201 | ! | | |/// |
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| 202 | ! | | | | |/// |
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| 203 | ! jpieob-2 jpieob-1 jpieob |
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| 204 | ! | | |
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| 205 | ! jpieob-1 jpieob |
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| 206 | ! |
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| 207 | ! ... If free surface formulation: |
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| 208 | ! ... radiative conditions on the total part + relaxation toward climatology |
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| 209 | ! ... (jpjedp1, jpjefm1),jpieob |
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| 210 | DO ji = nie0, nie1 |
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| 211 | DO jk = 1, jpkm1 |
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| 212 | DO jj = 1, jpj |
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| 213 | z05cx = u_cxebnd(jj,jk) |
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| 214 | z05cx = z05cx / e1t(ji,jj) |
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| 215 | z05cx = min( z05cx, 1. ) |
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| 216 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
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| 217 | ! > 0, outflow zin=1, ztau=rtaue |
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| 218 | zin = sign( 1., z05cx ) |
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| 219 | zin = 0.5*( zin + abs(zin) ) |
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| 220 | ! ... for inflow rtauein is used for relaxation coefficient else rtaue |
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| 221 | ztau = (1.-zin ) * rtauein + zin * rtaue |
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| 222 | z05cx = z05cx * zin |
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| 223 | ! ... update ua with radiative or climatological velocity |
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| 224 | ua(ji,jj,jk) = ua(ji,jj,jk) * ( 1. - uemsk(jj,jk) ) + & |
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| 225 | uemsk(jj,jk) * ( ( 1. - z05cx - ztau ) & |
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| 226 | * uebnd(jj,jk,nib ,nitm) + 2.*z05cx & |
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| 227 | * uebnd(jj,jk,nibm,nit ) + ztau * ufoe (jj,jk) ) & |
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| 228 | / (1. + z05cx) |
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| 229 | END DO |
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| 230 | END DO |
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| 231 | END DO |
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| 232 | # if defined key_dynspg_rl |
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| 233 | ! ... ua must be a baroclinic velocity uclie() |
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| 234 | CALL obc_cli( ua, uclie, nie0, nie1, 0, jpj ) |
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| 235 | |
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| 236 | ! ... add the correct barotropic radiative velocity (calculated from bsfn) to the |
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| 237 | ! baroclinc velocity uclie() to have the total velocity |
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| 238 | DO ji = nie0, nie1 |
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| 239 | DO jk = 1, jpkm1 |
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| 240 | DO jj = 1, jpj |
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| 241 | ua(ji,jj,jk) = ua(ji,jj,jk) * ( 1. - uemsk(jj,jk) ) + & |
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| 242 | uemsk(jj,jk) * ( uclie(jj,jk) - hur (ji,jj) / e2u (ji,jj) & |
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| 243 | * ( bsfn(ji,jj) - bsfn(ji,jj-1) ) ) |
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| 244 | END DO |
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| 245 | END DO |
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| 246 | END DO |
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| 247 | # endif |
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| 248 | ! 2.2 v-component of the velocity |
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| 249 | ! ------------------------------- |
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| 250 | ! |
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| 251 | ! nibm2 nibm nib |
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| 252 | ! | nibm | nib///|/// |
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| 253 | ! | | | |////|/// |
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| 254 | ! jj-line --v----f----v----f----v--- |
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| 255 | ! | | | |////|/// |
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| 256 | ! | | | |////|/// |
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| 257 | ! | jpieob-1 | jpieob /|/// |
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| 258 | ! | | | |
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| 259 | ! jpieob-1 jpieob jpieob+1 |
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| 260 | ! |
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| 261 | ! ... radiative condition |
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| 262 | ! ... (jpjedp1, jpjefm1), jpieob+1 |
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| 263 | DO ji = nie0+1, nie1+1 |
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| 264 | DO jk = 1, jpkm1 |
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| 265 | DO jj = 1, jpj |
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| 266 | z05cx = v_cxebnd(jj,jk) |
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| 267 | z05cx = z05cx / e1f(ji-1,jj) |
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| 268 | z05cx = min( z05cx, 1. ) |
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| 269 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
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| 270 | ! > 0, outflow zin=1, ztau=rtaue |
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| 271 | zin = sign( 1., z05cx ) |
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| 272 | zin = 0.5*( zin + abs(zin) ) |
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| 273 | ! ... for inflow rtauein is used for relaxation coefficient else rtaue |
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| 274 | ztau = (1.-zin ) * rtauein + zin * rtaue |
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| 275 | z05cx = z05cx * zin |
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| 276 | ! ... update va with radiative or climatological velocity |
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| 277 | va(ji,jj,jk) = va(ji,jj,jk) * (1. - vemsk(jj,jk) ) + & |
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| 278 | vemsk(jj,jk) * ( ( 1. - z05cx - ztau ) & |
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| 279 | * vebnd(jj,jk,nib ,nitm) + 2.*z05cx & |
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| 280 | * vebnd(jj,jk,nibm,nit ) + ztau * vfoe(jj,jk) ) & |
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| 281 | / (1. + z05cx) |
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| 282 | END DO |
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| 283 | END DO |
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| 284 | END DO |
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| 285 | |
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| 286 | END IF |
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| 287 | |
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| 288 | END SUBROUTINE obc_dyn_east |
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| 289 | |
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| 290 | |
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| 291 | SUBROUTINE obc_dyn_west |
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| 292 | !!------------------------------------------------------------------------------ |
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| 293 | !! *** SUBROUTINE obc_dyn_west *** |
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| 294 | !! |
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| 295 | !! ** Purpose : |
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| 296 | !! Apply the radiation algorithm on west OBC velocities ua, va using the |
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| 297 | !! phase velocities calculated in obc_rad_west subroutine in obcrad.F90 module |
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| 298 | !! If the logical lfbcwest is .TRUE., there is no radiation but only fixed OBC |
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| 299 | !! |
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| 300 | !! History : |
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| 301 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
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| 302 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
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| 303 | !! ! 97-12 (M. Imbard) Mpp adaptation |
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| 304 | !! ! 00-06 (J.-M. Molines) |
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| 305 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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| 306 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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| 307 | !!------------------------------------------------------------------------------ |
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| 308 | !! * Arguments |
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| 309 | |
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| 310 | !! * Local declaration |
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| 311 | REAL(wp) :: z05cx, ztau, zin |
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| 312 | !!------------------------------------------------------------------------------ |
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| 313 | |
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| 314 | ! 1. First three time steps and more if lfbcwest is .TRUE. |
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| 315 | ! In that case open boundary conditions are FIXED. |
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| 316 | ! -------------------------------------------------------- |
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| 317 | |
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| 318 | IF ( ll_fbc .OR. lfbcwest ) THEN |
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| 319 | |
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| 320 | ! 1.1 U zonal velocity |
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| 321 | ! --------------------- |
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| 322 | DO ji = niw0, niw1 |
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| 323 | DO jk = 1, jpkm1 |
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| 324 | DO jj = 1, jpj |
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| 325 | # if defined key_dynspg_rl |
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| 326 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-uwmsk(jj,jk)) + & |
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| 327 | uwmsk(jj,jk)*( ufow(jj,jk) - hur (ji,jj) / e2u (ji,jj) & |
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| 328 | * ( bsfn(ji,jj) - bsfn(ji,jj-1) ) ) |
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| 329 | # else |
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| 330 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-uwmsk(jj,jk)) + & |
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| 331 | uwmsk(jj,jk)*ufow(jj,jk) |
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| 332 | # endif |
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| 333 | END DO |
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| 334 | END DO |
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| 335 | END DO |
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| 336 | |
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| 337 | ! 1.2 V meridional velocity |
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| 338 | ! ------------------------- |
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| 339 | DO ji = niw0, niw1 |
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| 340 | DO jk = 1, jpkm1 |
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| 341 | DO jj = 1, jpj |
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| 342 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vwmsk(jj,jk)) + & |
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| 343 | vfow(jj,jk)*vwmsk(jj,jk) |
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| 344 | END DO |
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| 345 | END DO |
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| 346 | END DO |
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| 347 | |
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| 348 | ELSE |
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| 349 | |
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| 350 | ! 2. Beyond the fourth time step if lfbcwest is .FALSE. |
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| 351 | ! ----------------------------------------------------- |
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| 352 | |
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| 353 | ! 2.1. u-component of the velocity |
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| 354 | ! --------------------------------- |
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| 355 | ! |
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| 356 | ! nib nibm nibm2 |
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| 357 | ! ///| nib | nibm | |
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| 358 | ! ///| | | | | |
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| 359 | ! ---f----v----f----v----f-- jj-line |
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| 360 | ! ///| | | | | |
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| 361 | ! ///| | | |
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| 362 | ! ///u T u T u jj-line |
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| 363 | ! ///| | | |
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| 364 | ! ///| | | | | |
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| 365 | ! jpiwob jpiwob+1 jpiwob+2 |
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| 366 | ! | | |
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| 367 | ! jpiwob+1 jpiwob+2 |
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| 368 | ! |
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| 369 | ! ... If free surface formulation: |
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| 370 | ! ... radiative conditions on the total part + relaxation toward climatology |
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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 = u_cxwbnd(jj,jk) |
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| 376 | z05cx = z05cx / e1t(ji+1,jj) |
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| 377 | z05cx = max( z05cx, -1. ) |
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| 378 | ! ... z05c > 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 un with radiative or climatological velocity |
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| 385 | ua(ji,jj,jk) = ua(ji,jj,jk) * ( 1. - uwmsk(jj,jk) ) + & |
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| 386 | uwmsk(jj,jk) * ( ( 1. + z05cx - ztau ) & |
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| 387 | * uwbnd(jj,jk,nib ,nitm) - 2.*z05cx & |
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| 388 | * uwbnd(jj,jk,nibm,nit ) + ztau * ufow (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 | # if defined key_dynspg_rl |
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| 394 | ! ... ua must be a baroclinic velocity ucliw() |
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| 395 | CALL obc_cli( ua, ucliw, niw0, niw1, 0, jpj ) |
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| 396 | |
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| 397 | ! ... add the correct barotropic radiative velocity (calculated from bsfn) |
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| 398 | ! to the baroclinc velocity ucliw() to have the total velocity |
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| 399 | DO ji = niw0, niw1 |
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| 400 | DO jk = 1, jpkm1 |
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| 401 | DO jj = 1, jpj |
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| 402 | ua(ji,jj,jk) = ua(ji,jj,jk) * ( 1. - uwmsk(jj,jk) ) + & |
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| 403 | uwmsk(jj,jk)*( ucliw(jj,jk) - hur (ji,jj) / e2u (ji,jj) & |
|---|
| 404 | * ( bsfn(ji,jj) - bsfn(ji,jj-1) ) ) |
|---|
| 405 | END DO |
|---|
| 406 | END DO |
|---|
| 407 | END DO |
|---|
| 408 | # endif |
|---|
| 409 | |
|---|
| 410 | ! 2.2 v-component of the velocity |
|---|
| 411 | ! ------------------------------- |
|---|
| 412 | ! |
|---|
| 413 | ! nib nibm nibm2 |
|---|
| 414 | ! ///|///nib | nibm | nibm2 |
|---|
| 415 | ! ///|////| | | | | | |
|---|
| 416 | ! ---v----f----v----f----v----f----v-- jj-line |
|---|
| 417 | ! ///|////| | | | | | |
|---|
| 418 | ! ///|////| | | | | | |
|---|
| 419 | ! jpiwob jpiwob+1 jpiwob+2 |
|---|
| 420 | ! | | | |
|---|
| 421 | ! jpiwob jpiwob+1 jpiwob+2 |
|---|
| 422 | ! |
|---|
| 423 | ! ... radiative condition plus Raymond-Kuo |
|---|
| 424 | ! ... (jpjwdp1, jpjwfm1),jpiwob |
|---|
| 425 | DO ji = niw0, niw1 |
|---|
| 426 | DO jk = 1, jpkm1 |
|---|
| 427 | DO jj = 1, jpj |
|---|
| 428 | z05cx = v_cxwbnd(jj,jk) |
|---|
| 429 | z05cx = z05cx / e1f(ji,jj) |
|---|
| 430 | z05cx = max( z05cx, -1. ) |
|---|
| 431 | ! ... z05cx > 0, inflow zin=0, ztau=1 |
|---|
| 432 | ! =< 0, outflow zin=1, ztau=rtauw |
|---|
| 433 | zin = sign( 1., -1. * z05cx ) |
|---|
| 434 | zin = 0.5*( zin + abs(zin) ) |
|---|
| 435 | ztau = (1.-zin )*rtauwin + zin * rtauw |
|---|
| 436 | z05cx = z05cx * zin |
|---|
| 437 | ! ... update va with radiative or climatological velocity |
|---|
| 438 | va(ji,jj,jk) = va(ji,jj,jk) * (1. - vwmsk(jj,jk) ) + & |
|---|
| 439 | vwmsk(jj,jk) * ( ( 1. + z05cx - ztau ) & |
|---|
| 440 | * vwbnd(jj,jk,nib ,nitm) - 2.*z05cx & |
|---|
| 441 | * vwbnd(jj,jk,nibm,nit ) + ztau * vfow (jj,jk) ) & |
|---|
| 442 | / (1. - z05cx) |
|---|
| 443 | END DO |
|---|
| 444 | END DO |
|---|
| 445 | END DO |
|---|
| 446 | |
|---|
| 447 | END IF |
|---|
| 448 | |
|---|
| 449 | END SUBROUTINE obc_dyn_west |
|---|
| 450 | |
|---|
| 451 | SUBROUTINE obc_dyn_north |
|---|
| 452 | !!------------------------------------------------------------------------------ |
|---|
| 453 | !! SUBROUTINE obc_dyn_north |
|---|
| 454 | !! ************************* |
|---|
| 455 | !! ** Purpose : |
|---|
| 456 | !! Apply the radiation algorithm on north OBC velocities ua, va using the |
|---|
| 457 | !! phase velocities calculated in obc_rad_north subroutine in obcrad.F90 module |
|---|
| 458 | !! If the logical lfbcnorth is .TRUE., there is no radiation but only fixed OBC |
|---|
| 459 | !! |
|---|
| 460 | !! History : |
|---|
| 461 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
|---|
| 462 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
|---|
| 463 | !! ! 97-12 (M. Imbard) Mpp adaptation |
|---|
| 464 | !! ! 00-06 (J.-M. Molines) |
|---|
| 465 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
|---|
| 466 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
|---|
| 467 | !!------------------------------------------------------------------------------ |
|---|
| 468 | !! * Arguments |
|---|
| 469 | |
|---|
| 470 | !! * Local declaration |
|---|
| 471 | REAL(wp) :: z05cx, ztau, zin |
|---|
| 472 | !!------------------------------------------------------------------------------ |
|---|
| 473 | |
|---|
| 474 | ! 1. First three time steps and more if lfbcnorth is .TRUE. |
|---|
| 475 | ! In that case open boundary conditions are FIXED. |
|---|
| 476 | ! --------------------------------------------------------- |
|---|
| 477 | |
|---|
| 478 | IF ( ll_fbc .OR. lfbcnorth ) THEN |
|---|
| 479 | |
|---|
| 480 | ! 1.1 U zonal velocity |
|---|
| 481 | ! -------------------- |
|---|
| 482 | DO jj = njn0+1, njn1+1 |
|---|
| 483 | DO jk = 1, jpkm1 |
|---|
| 484 | DO ji = 1, jpi |
|---|
| 485 | ua(ji,jj,jk)= ua(ji,jj,jk) * (1.-unmsk(ji,jk)) + & |
|---|
| 486 | ufon(ji,jk)*unmsk(ji,jk) |
|---|
| 487 | END DO |
|---|
| 488 | END DO |
|---|
| 489 | END DO |
|---|
| 490 | |
|---|
| 491 | ! 1.2 V meridional velocity |
|---|
| 492 | ! ------------------------- |
|---|
| 493 | DO jj = njn0, njn1 |
|---|
| 494 | DO jk = 1, jpkm1 |
|---|
| 495 | DO ji = 1, jpi |
|---|
| 496 | # if defined key_dynspg_rl |
|---|
| 497 | va(ji,jj,jk)= va(ji,jj,jk) * (1.-vnmsk(ji,jk)) + & |
|---|
| 498 | vnmsk(ji,jk) * ( vfon(ji,jk) + hvr (ji,jj) / e1v (ji,jj) & |
|---|
| 499 | * ( bsfn(ji,jj) - bsfn(ji-1,jj) ) ) |
|---|
| 500 | # else |
|---|
| 501 | va(ji,jj,jk)= va(ji,jj,jk) * (1.-vnmsk(ji,jk)) + & |
|---|
| 502 | vfon(ji,jk)*vnmsk(ji,jk) |
|---|
| 503 | # endif |
|---|
| 504 | END DO |
|---|
| 505 | END DO |
|---|
| 506 | END DO |
|---|
| 507 | |
|---|
| 508 | ELSE |
|---|
| 509 | |
|---|
| 510 | ! 2. Beyond the fourth time step if lfbcnorth is .FALSE. |
|---|
| 511 | ! ------------------------------------------------------ |
|---|
| 512 | |
|---|
| 513 | ! 2.1. u-component of the velocity |
|---|
| 514 | ! -------------------------------- |
|---|
| 515 | ! |
|---|
| 516 | ! ji-row |
|---|
| 517 | ! | |
|---|
| 518 | ! nib ///u////// jpjnob + 1 |
|---|
| 519 | ! /////|////// |
|---|
| 520 | ! nib -----f----- jpjnob |
|---|
| 521 | ! | |
|---|
| 522 | ! nibm-- u ---- jpjnob |
|---|
| 523 | ! | |
|---|
| 524 | ! nibm -----f----- jpjnob-1 |
|---|
| 525 | ! | |
|---|
| 526 | ! nibm2-- u ---- jpjnob-1 |
|---|
| 527 | ! | |
|---|
| 528 | ! nibm2 -----f----- jpjnob-2 |
|---|
| 529 | ! | |
|---|
| 530 | ! |
|---|
| 531 | ! ... radiative condition |
|---|
| 532 | ! ... jpjnob+1,(jpindp1, jpinfm1) |
|---|
| 533 | DO jj = njn0+1, njn1+1 |
|---|
| 534 | DO jk = 1, jpkm1 |
|---|
| 535 | DO ji = 1, jpi |
|---|
| 536 | z05cx= u_cynbnd(ji,jk) |
|---|
| 537 | z05cx = z05cx / e2f(ji, jj-1) |
|---|
| 538 | z05cx = min( z05cx, 1. ) |
|---|
| 539 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
|---|
| 540 | ! > 0, outflow zin=1, ztau=rtaun |
|---|
| 541 | zin = sign( 1., z05cx ) |
|---|
| 542 | zin = 0.5*( zin + abs(zin) ) |
|---|
| 543 | ! ... for inflow rtaunin is used for relaxation coefficient else rtaun |
|---|
| 544 | ztau = (1.-zin ) * rtaunin + zin * rtaun |
|---|
| 545 | ! ... for u, when inflow, ufon is prescribed |
|---|
| 546 | z05cx = z05cx * zin |
|---|
| 547 | ! ... update un with radiative or climatological velocity |
|---|
| 548 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-unmsk(ji,jk)) + & |
|---|
| 549 | unmsk(ji,jk) * ( ( 1. - z05cx - ztau ) & |
|---|
| 550 | * unbnd(ji,jk,nib ,nitm) + 2.*z05cx & |
|---|
| 551 | * unbnd(ji,jk,nibm,nit ) + ztau * ufon (ji,jk) ) & |
|---|
| 552 | / (1. + z05cx) |
|---|
| 553 | END DO |
|---|
| 554 | END DO |
|---|
| 555 | END DO |
|---|
| 556 | |
|---|
| 557 | ! 2.2 v-component of the velocity |
|---|
| 558 | ! ------------------------------- |
|---|
| 559 | ! |
|---|
| 560 | ! ji-row ji-row |
|---|
| 561 | ! | | |
|---|
| 562 | ! /////|///////////////// |
|---|
| 563 | ! nib -----f----v----f---- jpjnob |
|---|
| 564 | ! | | |
|---|
| 565 | ! nib - u -- T -- u ---- jpjnob |
|---|
| 566 | ! | | |
|---|
| 567 | ! nibm -----f----v----f---- jpjnob-1 |
|---|
| 568 | ! | | |
|---|
| 569 | ! nibm -- u -- T -- u --- jpjnob-1 |
|---|
| 570 | ! | | |
|---|
| 571 | ! nibm2 -----f----v----f---- jpjnob-2 |
|---|
| 572 | ! | | |
|---|
| 573 | ! |
|---|
| 574 | ! ... If rigidlid formulation: |
|---|
| 575 | ! ... radiative conditions on the baroclinic part only + relaxation toward climatology |
|---|
| 576 | ! ... If free surface formulation: |
|---|
| 577 | ! ... radiative conditions on the total part + relaxation toward climatology |
|---|
| 578 | ! ... jpjnob,(jpindp1, jpinfm1) |
|---|
| 579 | DO jj = njn0, njn1 |
|---|
| 580 | DO jk = 1, jpkm1 |
|---|
| 581 | DO ji = 1, jpi |
|---|
| 582 | ! ... 2* gradj(v) (T-point i=nibm, time mean) |
|---|
| 583 | z05cx = v_cynbnd(ji,jk) |
|---|
| 584 | z05cx = z05cx / e2t(ji,jj) |
|---|
| 585 | z05cx = min( z05cx, 1. ) |
|---|
| 586 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
|---|
| 587 | ! > 0, outflow zin=1, ztau=rtaun |
|---|
| 588 | zin = sign( 1., z05cx ) |
|---|
| 589 | zin = 0.5*( zin + abs(zin) ) |
|---|
| 590 | ! ... for inflow rtaunin is used for relaxation coefficient else rtaun |
|---|
| 591 | ztau = (1.-zin ) * rtaunin + zin * rtaun |
|---|
| 592 | z05cx = z05cx * zin |
|---|
| 593 | ! ... update va with radiative or climatological velocity |
|---|
| 594 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vnmsk(ji,jk)) + & |
|---|
| 595 | vnmsk(ji,jk) * ( ( 1. - z05cx - ztau ) & |
|---|
| 596 | * vnbnd(ji,jk,nib ,nitm) + 2.*z05cx & |
|---|
| 597 | * vnbnd(ji,jk,nibm,nit ) + ztau * vfon (ji,jk) ) & |
|---|
| 598 | / (1. + z05cx) |
|---|
| 599 | END DO |
|---|
| 600 | END DO |
|---|
| 601 | END DO |
|---|
| 602 | # if defined key_dynspg_rl |
|---|
| 603 | ! ... va must be a baroclinic velocity vclin() |
|---|
| 604 | CALL obc_cli( va, vclin, njn0, njn1, 1, jpi ) |
|---|
| 605 | |
|---|
| 606 | ! ... add the correct barotropic radiative velocity (calculated from bsfn) |
|---|
| 607 | ! to the baroclinc velocity vclin() to have the total velocity |
|---|
| 608 | DO jj = njn0, njn1 |
|---|
| 609 | DO jk = 1, jpkm1 |
|---|
| 610 | DO ji = 1, jpi |
|---|
| 611 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vnmsk(ji,jk)) + & |
|---|
| 612 | vnmsk(ji,jk) * ( vclin(ji,jk) + hvr (ji,jj) / e1v (ji,jj) & |
|---|
| 613 | * ( bsfn(ji,jj) - bsfn(ji-1,jj) ) ) |
|---|
| 614 | END DO |
|---|
| 615 | END DO |
|---|
| 616 | END DO |
|---|
| 617 | # endif |
|---|
| 618 | |
|---|
| 619 | |
|---|
| 620 | END IF |
|---|
| 621 | |
|---|
| 622 | END SUBROUTINE obc_dyn_north |
|---|
| 623 | |
|---|
| 624 | SUBROUTINE obc_dyn_south |
|---|
| 625 | !!------------------------------------------------------------------------------ |
|---|
| 626 | !! SUBROUTINE obc_dyn_south |
|---|
| 627 | !! ************************* |
|---|
| 628 | !! ** Purpose : |
|---|
| 629 | !! Apply the radiation algorithm on south OBC velocities ua, va using the |
|---|
| 630 | !! phase velocities calculated in obc_rad_south subroutine in obcrad.F90 module |
|---|
| 631 | !! If the logical lfbcsouth is .TRUE., there is no radiation but only fixed OBC |
|---|
| 632 | !! |
|---|
| 633 | !! History : |
|---|
| 634 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
|---|
| 635 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
|---|
| 636 | !! ! 97-12 (M. Imbard) Mpp adaptation |
|---|
| 637 | !! ! 00-06 (J.-M. Molines) |
|---|
| 638 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
|---|
| 639 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
|---|
| 640 | !!------------------------------------------------------------------------------ |
|---|
| 641 | !! * Arguments |
|---|
| 642 | |
|---|
| 643 | !! * Local declaration |
|---|
| 644 | REAL(wp) :: z05cx, ztau, zin |
|---|
| 645 | |
|---|
| 646 | !!------------------------------------------------------------------------------ |
|---|
| 647 | !! OPA 8.5, LODYC-IPSL (2002) |
|---|
| 648 | !!------------------------------------------------------------------------------ |
|---|
| 649 | |
|---|
| 650 | ! 1. First three time steps and more if lfbcsouth is .TRUE. |
|---|
| 651 | ! In that case open boundary conditions are FIXED. |
|---|
| 652 | ! --------------------------------------------------------- |
|---|
| 653 | |
|---|
| 654 | IF ( ll_fbc .OR. lfbcsouth ) THEN |
|---|
| 655 | |
|---|
| 656 | ! 1.1 U zonal velocity |
|---|
| 657 | ! -------------------- |
|---|
| 658 | DO jj = njs0, njs1 |
|---|
| 659 | DO jk = 1, jpkm1 |
|---|
| 660 | DO ji = 1, jpi |
|---|
| 661 | ua(ji,jj,jk)= ua(ji,jj,jk) * (1.-usmsk(ji,jk)) + & |
|---|
| 662 | usmsk(ji,jk) * ufos(ji,jk) |
|---|
| 663 | END DO |
|---|
| 664 | END DO |
|---|
| 665 | END DO |
|---|
| 666 | |
|---|
| 667 | ! 1.2 V meridional velocity |
|---|
| 668 | ! ------------------------- |
|---|
| 669 | DO jj = njs0, njs1 |
|---|
| 670 | DO jk = 1, jpkm1 |
|---|
| 671 | DO ji = 1, jpi |
|---|
| 672 | # if defined key_dynspg_rl |
|---|
| 673 | va(ji,jj,jk)= va(ji,jj,jk) * (1.-vsmsk(ji,jk)) + & |
|---|
| 674 | vsmsk(ji,jk) * (vfos(ji,jk) + hvr (ji,jj) / e1v (ji,jj) & |
|---|
| 675 | * ( bsfn(ji,jj) - bsfn(ji-1,jj) ) ) |
|---|
| 676 | # else |
|---|
| 677 | va(ji,jj,jk)= va(ji,jj,jk) * (1.-vsmsk(ji,jk)) + & |
|---|
| 678 | vsmsk(ji,jk) * vfos(ji,jk) |
|---|
| 679 | # endif |
|---|
| 680 | END DO |
|---|
| 681 | END DO |
|---|
| 682 | END DO |
|---|
| 683 | |
|---|
| 684 | ELSE |
|---|
| 685 | |
|---|
| 686 | ! 2. Beyond the fourth time step if lfbcsouth is .FALSE. |
|---|
| 687 | ! ------------------------------------------------------ |
|---|
| 688 | |
|---|
| 689 | ! 2.1. u-component of the velocity |
|---|
| 690 | ! -------------------------------- |
|---|
| 691 | ! |
|---|
| 692 | ! ji-row |
|---|
| 693 | ! | |
|---|
| 694 | ! nibm2 -----f----- jpjsob +2 |
|---|
| 695 | ! | |
|---|
| 696 | ! nibm2 -- u ---- jpjsob +2 |
|---|
| 697 | ! | |
|---|
| 698 | ! nibm -----f----- jpjsob +1 |
|---|
| 699 | ! | |
|---|
| 700 | ! nibm -- u ---- jpjsob +1 |
|---|
| 701 | ! | |
|---|
| 702 | ! nib -----f----- jpjsob |
|---|
| 703 | ! /////|////// |
|---|
| 704 | ! nib ////u///// jpjsob |
|---|
| 705 | ! |
|---|
| 706 | ! ... radiative condition plus Raymond-Kuo |
|---|
| 707 | ! ... jpjsob,(jpisdp1, jpisfm1) |
|---|
| 708 | DO jj = njs0, njs1 |
|---|
| 709 | DO jk = 1, jpkm1 |
|---|
| 710 | DO ji = 1, jpi |
|---|
| 711 | z05cx= u_cysbnd(ji,jk) |
|---|
| 712 | z05cx = z05cx / e2f(ji, jj) |
|---|
| 713 | z05cx = max( z05cx, -1. ) |
|---|
| 714 | ! ... z05cx > 0, inflow zin=0, ztau=1 |
|---|
| 715 | ! =< 0, outflow zin=1, ztau=rtaus |
|---|
| 716 | zin = sign( 1., -1. * z05cx ) |
|---|
| 717 | zin = 0.5*( zin + abs(zin) ) |
|---|
| 718 | ztau = (1.-zin ) * rtausin + zin * rtaus |
|---|
| 719 | z05cx = z05cx * zin |
|---|
| 720 | ! ... update ua with radiative or climatological velocity |
|---|
| 721 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-usmsk(ji,jk)) + & |
|---|
| 722 | usmsk(ji,jk) * ( ( 1. + z05cx - ztau ) & |
|---|
| 723 | * usbnd(ji,jk,nib ,nitm) - 2.*z05cx & |
|---|
| 724 | * usbnd(ji,jk,nibm,nit ) + ztau * ufos (ji,jk) ) & |
|---|
| 725 | / (1. - z05cx) |
|---|
| 726 | END DO |
|---|
| 727 | END DO |
|---|
| 728 | END DO |
|---|
| 729 | |
|---|
| 730 | ! 2.2 v-component of the velocity |
|---|
| 731 | ! ------------------------------- |
|---|
| 732 | ! |
|---|
| 733 | ! ji-row ji-row |
|---|
| 734 | ! | | |
|---|
| 735 | ! nibm2 -----f----v----f---- jpjsob+2 |
|---|
| 736 | ! | | |
|---|
| 737 | ! nibm - u -- T -- u ---- jpjsob+2 |
|---|
| 738 | ! | | |
|---|
| 739 | ! nibm -----f----v----f---- jpjsob+1 |
|---|
| 740 | ! | | |
|---|
| 741 | ! nib -- u -- T -- u --- jpjsob+1 |
|---|
| 742 | ! | | |
|---|
| 743 | ! nib -----f----v----f---- jpjsob |
|---|
| 744 | ! ///////////////////// |
|---|
| 745 | ! |
|---|
| 746 | ! ... If rigidlid formulation: |
|---|
| 747 | ! ... radiative conditions on the baroclinic part only + relaxation toward climatology |
|---|
| 748 | ! ... If free surface formulation: |
|---|
| 749 | ! ... radiative conditions on the total part + relaxation toward climatology |
|---|
| 750 | ! ... jpjsob,(jpisdp1,jpisfm1) |
|---|
| 751 | DO jj = njs0, njs1 |
|---|
| 752 | DO jk = 1, jpkm1 |
|---|
| 753 | DO ji = 1, jpi |
|---|
| 754 | z05cx = v_cysbnd(ji,jk) |
|---|
| 755 | z05cx = z05cx / e2t(ji,jj+1) |
|---|
| 756 | z05cx = max( z05cx, -1. ) |
|---|
| 757 | ! ... z05c > 0, inflow zin=0, ztau=1 |
|---|
| 758 | ! =< 0, outflow zin=1, ztau=rtaus |
|---|
| 759 | zin = sign( 1., -1. * z05cx ) |
|---|
| 760 | zin = 0.5*( zin + abs(zin) ) |
|---|
| 761 | ztau = (1.-zin )*rtausin + zin * rtaus |
|---|
| 762 | z05cx = z05cx * zin |
|---|
| 763 | ! ... update va with radiative or climatological velocity |
|---|
| 764 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vsmsk(ji,jk)) + & |
|---|
| 765 | vsmsk(ji,jk) * ( ( 1. + z05cx - ztau ) & |
|---|
| 766 | * vsbnd(ji,jk,nib ,nitm) - 2.*z05cx & |
|---|
| 767 | * vsbnd(ji,jk,nibm,nit ) + ztau * vfos (ji,jk) ) & |
|---|
| 768 | / (1. - z05cx) |
|---|
| 769 | END DO |
|---|
| 770 | END DO |
|---|
| 771 | END DO |
|---|
| 772 | # if defined key_dynspg_rl |
|---|
| 773 | ! ... va must be a baroclinic velocity vclis() |
|---|
| 774 | CALL obc_cli( va, vclis, njs0, njs1, 1, jpi ) |
|---|
| 775 | |
|---|
| 776 | ! ... add the correct barotropic radiative velocity (calculated from bsfn) |
|---|
| 777 | ! to the baroclinic velocity vclis() to have the total velocity |
|---|
| 778 | DO jj = njs0, njs1 |
|---|
| 779 | DO jk = 1, jpkm1 |
|---|
| 780 | DO ji = 1, jpi |
|---|
| 781 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vsmsk(ji,jk)) + & |
|---|
| 782 | vsmsk(ji,jk) * ( vclis(ji,jk) + hvr (ji,jj) / e1v (ji,jj) & |
|---|
| 783 | * ( bsfn(ji,jj) - bsfn(ji-1,jj) ) ) |
|---|
| 784 | END DO |
|---|
| 785 | END DO |
|---|
| 786 | END DO |
|---|
| 787 | # endif |
|---|
| 788 | END IF |
|---|
| 789 | |
|---|
| 790 | END SUBROUTINE obc_dyn_south |
|---|
| 791 | #else |
|---|
| 792 | !!================================================================================= |
|---|
| 793 | !! *** MODULE obcdyn *** |
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| 794 | !! Ocean dynamics: Radiation of velocities on each open boundary |
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| 795 | !!================================================================================= |
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| 796 | CONTAINS |
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| 797 | |
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| 798 | SUBROUTINE obc_dyn |
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| 799 | ! No open boundaries ==> empty routine |
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| 800 | END SUBROUTINE obc_dyn |
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| 801 | #endif |
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| 802 | |
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| 803 | END MODULE obcdyn |
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