[911] | 1 | MODULE bdytra |
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[1125] | 2 | !!====================================================================== |
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[911] | 3 | !! *** MODULE bdytra *** |
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[3294] | 4 | !! Ocean tracers: Apply boundary conditions for tracers |
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[1125] | 5 | !!====================================================================== |
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| 6 | !! History : 1.0 ! 2005-01 (J. Chanut, A. Sellar) Original code |
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| 7 | !! 3.0 ! 2008-04 (NEMO team) add in the reference version |
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[3294] | 8 | !! 3.4 ! 2011 (D. Storkey) rewrite in preparation for OBC-BDY merge |
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[1125] | 9 | !!---------------------------------------------------------------------- |
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[911] | 10 | #if defined key_bdy |
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[1125] | 11 | !!---------------------------------------------------------------------- |
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| 12 | !! 'key_bdy' Unstructured Open Boundary Conditions |
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| 13 | !!---------------------------------------------------------------------- |
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[3294] | 14 | !! bdy_tra : Apply open boundary conditions to T and S |
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| 15 | !! bdy_tra_frs : Apply Flow Relaxation Scheme |
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[1125] | 16 | !!---------------------------------------------------------------------- |
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[3294] | 17 | USE timing ! Timing |
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[911] | 18 | USE oce ! ocean dynamics and tracers variables |
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| 19 | USE dom_oce ! ocean space and time domain variables |
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| 20 | USE bdy_oce ! ocean open boundary conditions |
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[3294] | 21 | USE bdydta, ONLY: bf |
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[911] | 22 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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[1125] | 23 | USE in_out_manager ! I/O manager |
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[911] | 24 | |
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[3583] | 25 | |
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[911] | 26 | IMPLICIT NONE |
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| 27 | PRIVATE |
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| 28 | |
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[3294] | 29 | PUBLIC bdy_tra ! routine called in tranxt.F90 |
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[3583] | 30 | PUBLIC bdy_tra_dmp ! routine called in step.F90 |
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[911] | 31 | |
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[1125] | 32 | !!---------------------------------------------------------------------- |
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[2528] | 33 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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[1146] | 34 | !! $Id$ |
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[2528] | 35 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[1125] | 36 | !!---------------------------------------------------------------------- |
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[911] | 37 | CONTAINS |
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| 38 | |
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[3294] | 39 | SUBROUTINE bdy_tra( kt ) |
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[1125] | 40 | !!---------------------------------------------------------------------- |
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[3294] | 41 | !! *** SUBROUTINE bdy_tra *** |
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| 42 | !! |
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| 43 | !! ** Purpose : - Apply open boundary conditions for temperature and salinity |
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| 44 | !! |
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| 45 | !!---------------------------------------------------------------------- |
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| 46 | INTEGER, INTENT( in ) :: kt ! Main time step counter |
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| 47 | !! |
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| 48 | INTEGER :: ib_bdy ! Loop index |
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| 49 | |
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| 50 | DO ib_bdy=1, nb_bdy |
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| 51 | |
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| 52 | SELECT CASE( nn_tra(ib_bdy) ) |
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| 53 | CASE(jp_none) |
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| 54 | CYCLE |
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| 55 | CASE(jp_frs) |
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| 56 | CALL bdy_tra_frs( idx_bdy(ib_bdy), dta_bdy(ib_bdy), kt ) |
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[3583] | 57 | CASE(2) |
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| 58 | CALL bdy_tra_spe( idx_bdy(ib_bdy), dta_bdy(ib_bdy), kt ) |
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| 59 | CASE(3) |
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| 60 | CALL bdy_tra_nmn( idx_bdy(ib_bdy), dta_bdy(ib_bdy), kt ) |
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| 61 | CASE(4) |
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| 62 | CALL bdy_tra_rnf( idx_bdy(ib_bdy), dta_bdy(ib_bdy), kt ) |
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[3294] | 63 | CASE DEFAULT |
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| 64 | CALL ctl_stop( 'bdy_tra : unrecognised option for open boundaries for T and S' ) |
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| 65 | END SELECT |
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| 66 | ENDDO |
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[3583] | 67 | ! |
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| 68 | ! Boundary points should be updated |
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| 69 | IF (nb_bdy>0) CALL lbc_lnk( tsa(:,:,:,jp_tem), 'T', 1. ) |
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| 70 | IF (nb_bdy>0) CALL lbc_lnk( tsa(:,:,:,jp_sal), 'T', 1. ) |
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[3294] | 71 | |
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| 72 | END SUBROUTINE bdy_tra |
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| 73 | |
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| 74 | SUBROUTINE bdy_tra_frs( idx, dta, kt ) |
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| 75 | !!---------------------------------------------------------------------- |
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[2528] | 76 | !! *** SUBROUTINE bdy_tra_frs *** |
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[911] | 77 | !! |
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[3294] | 78 | !! ** Purpose : Apply the Flow Relaxation Scheme for tracers at open boundaries. |
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[911] | 79 | !! |
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[1125] | 80 | !! Reference : Engedahl H., 1995, Tellus, 365-382. |
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| 81 | !!---------------------------------------------------------------------- |
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[3294] | 82 | INTEGER, INTENT(in) :: kt |
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| 83 | TYPE(OBC_INDEX), INTENT(in) :: idx ! OBC indices |
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| 84 | TYPE(OBC_DATA), INTENT(in) :: dta ! OBC external data |
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[1125] | 85 | !! |
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| 86 | REAL(wp) :: zwgt ! boundary weight |
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| 87 | INTEGER :: ib, ik, igrd ! dummy loop indices |
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| 88 | INTEGER :: ii, ij ! 2D addresses |
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| 89 | !!---------------------------------------------------------------------- |
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| 90 | ! |
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[3294] | 91 | IF( nn_timing == 1 ) CALL timing_start('bdy_tra_frs') |
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[1125] | 92 | ! |
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[3294] | 93 | igrd = 1 ! Everything is at T-points here |
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| 94 | DO ib = 1, idx%nblen(igrd) |
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| 95 | DO ik = 1, jpkm1 |
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| 96 | ii = idx%nbi(ib,igrd) |
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| 97 | ij = idx%nbj(ib,igrd) |
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| 98 | zwgt = idx%nbw(ib,igrd) |
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| 99 | tsa(ii,ij,ik,jp_tem) = ( tsa(ii,ij,ik,jp_tem) + zwgt * ( dta%tem(ib,ik) - tsa(ii,ij,ik,jp_tem) ) ) * tmask(ii,ij,ik) |
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| 100 | tsa(ii,ij,ik,jp_sal) = ( tsa(ii,ij,ik,jp_sal) + zwgt * ( dta%sal(ib,ik) - tsa(ii,ij,ik,jp_sal) ) ) * tmask(ii,ij,ik) |
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| 101 | END DO |
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| 102 | END DO |
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| 103 | ! |
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| 104 | IF( kt .eq. nit000 ) CLOSE( unit = 102 ) |
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| 105 | ! |
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| 106 | IF( nn_timing == 1 ) CALL timing_stop('bdy_tra_frs') |
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| 107 | ! |
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[2528] | 108 | END SUBROUTINE bdy_tra_frs |
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[3583] | 109 | |
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| 110 | SUBROUTINE bdy_tra_spe( idx, dta, kt ) |
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| 111 | !!---------------------------------------------------------------------- |
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| 112 | !! *** SUBROUTINE bdy_tra_frs *** |
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| 113 | !! |
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| 114 | !! ** Purpose : Apply a specified value for tracers at open boundaries. |
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| 115 | !! |
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| 116 | !!---------------------------------------------------------------------- |
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| 117 | INTEGER, INTENT(in) :: kt |
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| 118 | TYPE(OBC_INDEX), INTENT(in) :: idx ! OBC indices |
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| 119 | TYPE(OBC_DATA), INTENT(in) :: dta ! OBC external data |
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| 120 | !! |
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| 121 | REAL(wp) :: zwgt ! boundary weight |
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| 122 | INTEGER :: ib, ik, igrd ! dummy loop indices |
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| 123 | INTEGER :: ii, ij ! 2D addresses |
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| 124 | !!---------------------------------------------------------------------- |
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| 125 | ! |
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| 126 | IF( nn_timing == 1 ) CALL timing_start('bdy_tra_spe') |
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| 127 | ! |
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| 128 | igrd = 1 ! Everything is at T-points here |
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| 129 | DO ib = 1, idx%nblenrim(igrd) |
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| 130 | ii = idx%nbi(ib,igrd) |
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| 131 | ij = idx%nbj(ib,igrd) |
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| 132 | DO ik = 1, jpkm1 |
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| 133 | tsa(ii,ij,ik,jp_tem) = dta%tem(ib,ik) * tmask(ii,ij,ik) |
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| 134 | tsa(ii,ij,ik,jp_sal) = dta%sal(ib,ik) * tmask(ii,ij,ik) |
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| 135 | END DO |
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| 136 | END DO |
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| 137 | ! |
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| 138 | IF( kt .eq. nit000 ) CLOSE( unit = 102 ) |
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| 139 | ! |
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| 140 | IF( nn_timing == 1 ) CALL timing_stop('bdy_tra_spe') |
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| 141 | ! |
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| 142 | END SUBROUTINE bdy_tra_spe |
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| 143 | |
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| 144 | SUBROUTINE bdy_tra_nmn( idx, dta, kt ) |
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| 145 | !!---------------------------------------------------------------------- |
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| 146 | !! *** SUBROUTINE bdy_tra_nmn *** |
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| 147 | !! |
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| 148 | !! ** Purpose : Duplicate the value for tracers at open boundaries. |
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| 149 | !! |
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| 150 | !!---------------------------------------------------------------------- |
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| 151 | INTEGER, INTENT(in) :: kt |
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| 152 | TYPE(OBC_INDEX), INTENT(in) :: idx ! OBC indices |
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| 153 | TYPE(OBC_DATA), INTENT(in) :: dta ! OBC external data |
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| 154 | !! |
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| 155 | REAL(wp) :: zwgt ! boundary weight |
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| 156 | INTEGER :: ib, ik, igrd ! dummy loop indices |
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| 157 | INTEGER :: ii, ij,zcoef, zcoef1,zcoef2, ip, jp ! 2D addresses |
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| 158 | !!---------------------------------------------------------------------- |
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| 159 | ! |
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| 160 | IF( nn_timing == 1 ) CALL timing_start('bdy_tra_nmn') |
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| 161 | ! |
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| 162 | igrd = 1 ! Everything is at T-points here |
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| 163 | DO ib = 1, idx%nblenrim(igrd) |
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| 164 | ii = idx%nbi(ib,igrd) |
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| 165 | ij = idx%nbj(ib,igrd) |
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| 166 | DO ik = 1, jpkm1 |
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| 167 | ! search the sense of the gradient |
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| 168 | zcoef1 = bdytmask(ii-1,ij ) + bdytmask(ii+1,ij ) |
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| 169 | zcoef2 = bdytmask(ii ,ij-1) + bdytmask(ii ,ij+1) |
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| 170 | IF ( zcoef1+zcoef2 == 0) THEN |
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| 171 | ! corner |
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| 172 | zcoef = tmask(ii-1,ij,ik) + tmask(ii+1,ij,ik) + tmask(ii,ij-1,ik) + tmask(ii,ij+1,ik) |
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| 173 | tsa(ii,ij,ik,jp_tem) = tsa(ii-1,ij ,ik,jp_tem) * tmask(ii-1,ij ,ik) + & |
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| 174 | & tsa(ii+1,ij ,ik,jp_tem) * tmask(ii+1,ij ,ik) + & |
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| 175 | & tsa(ii ,ij-1,ik,jp_tem) * tmask(ii ,ij-1,ik) + & |
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| 176 | & tsa(ii ,ij+1,ik,jp_tem) * tmask(ii ,ij+1,ik) |
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| 177 | tsa(ii,ij,ik,jp_tem) = ( tsa(ii,ij,ik,jp_tem) / MAX( 1, zcoef) ) * tmask(ii,ij,ik) |
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| 178 | tsa(ii,ij,ik,jp_sal) = tsa(ii-1,ij ,ik,jp_sal) * tmask(ii-1,ij ,ik) + & |
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| 179 | & tsa(ii+1,ij ,ik,jp_sal) * tmask(ii+1,ij ,ik) + & |
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| 180 | & tsa(ii ,ij-1,ik,jp_sal) * tmask(ii ,ij-1,ik) + & |
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| 181 | & tsa(ii ,ij+1,ik,jp_sal) * tmask(ii ,ij+1,ik) |
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| 182 | tsa(ii,ij,ik,jp_sal) = ( tsa(ii,ij,ik,jp_sal) / MAX( 1, zcoef) ) * tmask(ii,ij,ik) |
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| 183 | ELSE |
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| 184 | ip = bdytmask(ii+1,ij ) - bdytmask(ii-1,ij ) |
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| 185 | jp = bdytmask(ii ,ij+1) - bdytmask(ii ,ij-1) |
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| 186 | tsa(ii,ij,ik,jp_tem) = tsa(ii+ip,ij+jp,ik,jp_tem) * tmask(ii+ip,ij+jp,ik) |
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| 187 | tsa(ii,ij,ik,jp_sal) = tsa(ii+ip,ij+jp,ik,jp_sal) * tmask(ii+ip,ij+jp,ik) |
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| 188 | ENDIF |
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| 189 | END DO |
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| 190 | END DO |
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| 191 | ! |
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| 192 | IF( kt .eq. nit000 ) CLOSE( unit = 102 ) |
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| 193 | ! |
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| 194 | IF( nn_timing == 1 ) CALL timing_stop('bdy_tra_nmn') |
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| 195 | ! |
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| 196 | END SUBROUTINE bdy_tra_nmn |
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| 197 | |
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| 198 | SUBROUTINE bdy_tra_rnf( idx, dta, kt ) |
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| 199 | !!---------------------------------------------------------------------- |
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| 200 | !! *** SUBROUTINE bdy_tra_rnf *** |
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| 201 | !! |
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| 202 | !! ** Purpose : Apply the runoff values for tracers at open boundaries: |
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| 203 | !! - specified to 0.1 PSU for the salinity |
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| 204 | !! - duplicate the value for the temperature |
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| 205 | !! |
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| 206 | !!---------------------------------------------------------------------- |
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| 207 | INTEGER, INTENT(in) :: kt |
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| 208 | TYPE(OBC_INDEX), INTENT(in) :: idx ! OBC indices |
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| 209 | TYPE(OBC_DATA), INTENT(in) :: dta ! OBC external data |
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| 210 | !! |
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| 211 | REAL(wp) :: zwgt ! boundary weight |
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| 212 | INTEGER :: ib, ik, igrd ! dummy loop indices |
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| 213 | INTEGER :: ii, ij, ip, jp ! 2D addresses |
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| 214 | !!---------------------------------------------------------------------- |
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| 215 | ! |
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| 216 | IF( nn_timing == 1 ) CALL timing_start('bdy_tra_rnf') |
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| 217 | ! |
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| 218 | igrd = 1 ! Everything is at T-points here |
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| 219 | DO ib = 1, idx%nblenrim(igrd) |
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| 220 | ii = idx%nbi(ib,igrd) |
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| 221 | ij = idx%nbj(ib,igrd) |
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| 222 | DO ik = 1, jpkm1 |
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| 223 | ip = bdytmask(ii+1,ij ) - bdytmask(ii-1,ij ) |
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| 224 | jp = bdytmask(ii ,ij+1) - bdytmask(ii ,ij-1) |
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| 225 | tsa(ii,ij,ik,jp_tem) = tsa(ii+ip,ij+jp,ik,jp_tem) * tmask(ii,ij,ik) |
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| 226 | tsa(ii,ij,ik,jp_sal) = 0.1 * tmask(ii,ij,ik) |
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| 227 | END DO |
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| 228 | END DO |
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| 229 | ! |
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| 230 | IF( kt .eq. nit000 ) CLOSE( unit = 102 ) |
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| 231 | ! |
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| 232 | IF( nn_timing == 1 ) CALL timing_stop('bdy_tra_rnf') |
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| 233 | ! |
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| 234 | END SUBROUTINE bdy_tra_rnf |
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| 235 | |
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| 236 | SUBROUTINE bdy_tra_dmp( kt ) |
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| 237 | !!---------------------------------------------------------------------- |
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| 238 | !! *** SUBROUTINE bdy_tra_dmp *** |
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| 239 | !! |
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| 240 | !! ** Purpose : Apply damping for tracers at open boundaries. |
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| 241 | !! |
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| 242 | !!---------------------------------------------------------------------- |
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| 243 | INTEGER, INTENT(in) :: kt |
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| 244 | !! |
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| 245 | REAL(wp) :: zwgt ! boundary weight |
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| 246 | REAL(wp) :: zta, zsa, ztime |
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| 247 | INTEGER :: ib, ik, igrd ! dummy loop indices |
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| 248 | INTEGER :: ii, ij ! 2D addresses |
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| 249 | INTEGER :: ib_bdy ! Loop index |
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| 250 | !!---------------------------------------------------------------------- |
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| 251 | ! |
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| 252 | IF( nn_timing == 1 ) CALL timing_start('bdy_tra_dmp') |
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| 253 | ! |
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| 254 | DO ib_bdy=1, nb_bdy |
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| 255 | IF ( ln_tra_dmp(ib_bdy) ) THEN |
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| 256 | igrd = 1 ! Everything is at T-points here |
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| 257 | DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd) |
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| 258 | ii = idx_bdy(ib_bdy)%nbi(ib,igrd) |
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| 259 | ij = idx_bdy(ib_bdy)%nbj(ib,igrd) |
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| 260 | zwgt = idx_bdy(ib_bdy)%nbd(ib,igrd) |
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| 261 | DO ik = 1, jpkm1 |
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| 262 | zta = zwgt * ( dta_bdy(ib_bdy)%tem(ib,ik) - tsb(ii,ij,ik,jp_tem) ) * tmask(ii,ij,ik) |
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| 263 | zsa = zwgt * ( dta_bdy(ib_bdy)%sal(ib,ik) - tsb(ii,ij,ik,jp_sal) ) * tmask(ii,ij,ik) |
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| 264 | tsa(ii,ij,ik,jp_tem) = tsa(ii,ij,ik,jp_tem) + zta |
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| 265 | tsa(ii,ij,ik,jp_sal) = tsa(ii,ij,ik,jp_sal) + zsa |
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| 266 | END DO |
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| 267 | END DO |
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| 268 | ENDIF |
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| 269 | ENDDO |
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| 270 | ! |
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| 271 | IF( nn_timing == 1 ) CALL timing_stop('bdy_tra_dmp') |
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| 272 | ! |
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| 273 | END SUBROUTINE bdy_tra_dmp |
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| 274 | |
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[911] | 275 | #else |
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[1125] | 276 | !!---------------------------------------------------------------------- |
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| 277 | !! Dummy module NO Unstruct Open Boundary Conditions |
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| 278 | !!---------------------------------------------------------------------- |
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[911] | 279 | CONTAINS |
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[3294] | 280 | SUBROUTINE bdy_tra(kt) ! Empty routine |
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| 281 | WRITE(*,*) 'bdy_tra: You should not have seen this print! error?', kt |
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| 282 | END SUBROUTINE bdy_tra |
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[911] | 283 | #endif |
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| 284 | |
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[1125] | 285 | !!====================================================================== |
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[911] | 286 | END MODULE bdytra |
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