| 1 | MODULE bdytra |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE bdytra *** |
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| 4 | !! Ocean tracers: Apply boundary conditions for tracers |
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| 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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| 8 | !! 3.4 ! 2011 (D. Storkey) rewrite in preparation for OBC-BDY merge |
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| 9 | !! 3.5 ! 2012 (S. Mocavero, I. Epicoco) Optimization of BDY communications |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | #if defined key_bdy |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! 'key_bdy' Unstructured Open Boundary Conditions |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | !! bdy_tra : Apply open boundary conditions to T and S |
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| 16 | !! bdy_tra_frs : Apply Flow Relaxation Scheme |
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| 17 | !!---------------------------------------------------------------------- |
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| 18 | USE timing ! Timing |
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| 19 | USE oce ! ocean dynamics and tracers variables |
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| 20 | USE dom_oce ! ocean space and time domain variables |
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| 21 | USE bdy_oce ! ocean open boundary conditions |
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| 22 | USE bdydta, ONLY: bf |
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| 23 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 24 | USE in_out_manager ! I/O manager |
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| 25 | |
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| 26 | IMPLICIT NONE |
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| 27 | PRIVATE |
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| 28 | |
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| 29 | PUBLIC bdy_tra ! routine called in tranxt.F90 |
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| 30 | |
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| 31 | !!---------------------------------------------------------------------- |
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| 32 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 33 | !! $Id$ |
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| 34 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 35 | !!---------------------------------------------------------------------- |
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| 36 | CONTAINS |
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| 37 | |
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| 38 | SUBROUTINE bdy_tra( kt ) |
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| 39 | !!---------------------------------------------------------------------- |
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| 40 | !! *** SUBROUTINE bdy_tra *** |
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| 41 | !! |
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| 42 | !! ** Purpose : - Apply open boundary conditions for temperature and salinity |
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| 43 | !! |
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| 44 | !!---------------------------------------------------------------------- |
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| 45 | INTEGER, INTENT( in ) :: kt ! Main time step counter |
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| 46 | !! |
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| 47 | INTEGER :: ib_bdy ! Loop index |
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| 48 | |
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| 49 | DO ib_bdy=1, nb_bdy |
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| 50 | |
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| 51 | SELECT CASE( nn_tra(ib_bdy) ) |
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| 52 | CASE(jp_none) |
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| 53 | CYCLE |
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| 54 | CASE(jp_frs) |
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| 55 | CALL bdy_tra_frs( idx_bdy(ib_bdy), dta_bdy(ib_bdy), kt, ib_bdy ) |
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| 56 | CASE DEFAULT |
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| 57 | CALL ctl_stop( 'bdy_tra : unrecognised option for open boundaries for T and S' ) |
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| 58 | END SELECT |
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| 59 | ENDDO |
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| 60 | |
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| 61 | END SUBROUTINE bdy_tra |
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| 62 | |
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| 63 | SUBROUTINE bdy_tra_frs( idx, dta, kt, ib_bdy ) |
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| 64 | !!---------------------------------------------------------------------- |
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| 65 | !! *** SUBROUTINE bdy_tra_frs *** |
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| 66 | !! |
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| 67 | !! ** Purpose : Apply the Flow Relaxation Scheme for tracers at open boundaries. |
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| 68 | !! |
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| 69 | !! Reference : Engedahl H., 1995, Tellus, 365-382. |
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| 70 | !!---------------------------------------------------------------------- |
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| 71 | INTEGER, INTENT(in) :: kt |
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| 72 | TYPE(OBC_INDEX), INTENT(in) :: idx ! OBC indices |
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| 73 | TYPE(OBC_DATA), INTENT(in) :: dta ! OBC external data |
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| 74 | INTEGER, INTENT(in) :: ib_bdy ! BDY set index |
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| 75 | !! |
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| 76 | REAL(wp) :: zwgt ! boundary weight |
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| 77 | INTEGER :: ib, ik, igrd ! dummy loop indices |
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| 78 | INTEGER :: ii, ij ! 2D addresses |
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| 79 | !!---------------------------------------------------------------------- |
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| 80 | ! |
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| 81 | IF( nn_timing == 1 ) CALL timing_start('bdy_tra_frs') |
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| 82 | ! |
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| 83 | igrd = 1 ! Everything is at T-points here |
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| 84 | DO ib = 1, idx%nblen(igrd) |
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| 85 | DO ik = 1, jpkm1 |
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| 86 | ii = idx%nbi(ib,igrd) |
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| 87 | ij = idx%nbj(ib,igrd) |
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| 88 | zwgt = idx%nbw(ib,igrd) |
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| 89 | 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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| 90 | 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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| 91 | END DO |
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| 92 | END DO |
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| 93 | CALL lbc_bdy_lnk( tsa(:,:,:,jp_tem), 'T', 1., ib_bdy ) ; CALL lbc_bdy_lnk( tsa(:,:,:,jp_sal), 'T', 1., ib_bdy ) ! Boundary points should be updated |
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| 94 | ! |
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| 95 | IF( kt .eq. nit000 ) CLOSE( unit = 102 ) |
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| 96 | ! |
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| 97 | IF( nn_timing == 1 ) CALL timing_stop('bdy_tra_frs') |
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| 98 | ! |
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| 99 | END SUBROUTINE bdy_tra_frs |
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| 100 | |
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| 101 | #else |
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| 102 | !!---------------------------------------------------------------------- |
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| 103 | !! Dummy module NO Unstruct Open Boundary Conditions |
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| 104 | !!---------------------------------------------------------------------- |
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| 105 | CONTAINS |
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| 106 | SUBROUTINE bdy_tra(kt) ! Empty routine |
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| 107 | WRITE(*,*) 'bdy_tra: You should not have seen this print! error?', kt |
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| 108 | END SUBROUTINE bdy_tra |
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| 109 | #endif |
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| 110 | |
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| 111 | !!====================================================================== |
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| 112 | END MODULE bdytra |
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