1 | MODULE bdytra |
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2 | !!====================================================================== |
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3 | !! *** MODULE bdytra *** |
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4 | !! Ocean tracers: Flow Relaxation Scheme of tracers on each open boundary |
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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 | !!---------------------------------------------------------------------- |
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9 | #if defined key_bdy |
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10 | !!---------------------------------------------------------------------- |
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11 | !! 'key_bdy' Unstructured Open Boundary Conditions |
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12 | !!---------------------------------------------------------------------- |
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13 | !! bdy_tra : Relaxation of tracers on unstructured open boundaries |
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14 | !!---------------------------------------------------------------------- |
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15 | USE oce ! ocean dynamics and tracers variables |
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16 | USE dom_oce ! ocean space and time domain variables |
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17 | USE bdy_oce ! ocean open boundary conditions |
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18 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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19 | USE in_out_manager ! I/O manager |
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20 | |
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21 | IMPLICIT NONE |
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22 | PRIVATE |
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23 | |
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24 | PUBLIC bdy_tra ! routine called in tranxt.F90 |
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25 | |
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26 | !!---------------------------------------------------------------------- |
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27 | !! NEMO/OPA 3.0 , LOCEAN-IPSL (2008) |
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28 | !! $Id$ |
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29 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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30 | !!---------------------------------------------------------------------- |
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31 | |
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32 | CONTAINS |
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33 | |
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34 | SUBROUTINE bdy_tra( kt ) |
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35 | !!---------------------------------------------------------------------- |
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36 | !! *** SUBROUTINE bdy_tra *** |
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37 | !! |
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38 | !! ** Purpose : Apply the Flow Relaxation Scheme for tracers in the |
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39 | !! case of unstructured open boundaries. |
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40 | !! |
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41 | !! Reference : Engedahl H., 1995, Tellus, 365-382. |
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42 | !!---------------------------------------------------------------------- |
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43 | INTEGER, INTENT( in ) :: kt |
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44 | !! |
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45 | REAL(wp) :: zwgt ! boundary weight |
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46 | INTEGER :: ib, ik, igrd ! dummy loop indices |
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47 | INTEGER :: ii, ij ! 2D addresses |
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48 | !!---------------------------------------------------------------------- |
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49 | ! |
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50 | IF(ln_bdy_tra_frs) THEN ! If this is false, then this routine does nothing. |
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51 | |
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52 | IF( kt == nit000 ) THEN |
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53 | IF(lwp) WRITE(numout,*) |
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54 | IF(lwp) WRITE(numout,*) 'bdy_tra : Flow Relaxation Scheme for tracers' |
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55 | IF(lwp) WRITE(numout,*) '~~~~~~~' |
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56 | ENDIF |
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57 | ! |
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58 | igrd = 1 ! Everything is at T-points here |
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59 | DO ib = 1, nblen(igrd) |
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60 | DO ik = 1, jpkm1 |
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61 | ii = nbi(ib,igrd) |
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62 | ij = nbj(ib,igrd) |
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63 | zwgt = nbw(ib,igrd) |
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64 | ta(ii,ij,ik) = ( ta(ii,ij,ik) * (1.-zwgt) + tbdy(ib,ik) * zwgt ) * tmask(ii,ij,ik) |
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65 | sa(ii,ij,ik) = ( sa(ii,ij,ik) * (1.-zwgt) + sbdy(ib,ik) * zwgt ) * tmask(ii,ij,ik) |
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66 | END DO |
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67 | END DO |
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68 | ! |
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69 | CALL lbc_lnk( ta, 'T', 1. ) ! Boundary points should be updated |
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70 | CALL lbc_lnk( sa, 'T', 1. ) ! |
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71 | ! |
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72 | ENDIF ! ln_bdy_tra_frs |
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73 | |
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74 | END SUBROUTINE bdy_tra |
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75 | |
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76 | #else |
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77 | !!---------------------------------------------------------------------- |
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78 | !! Dummy module NO Unstruct Open Boundary Conditions |
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79 | !!---------------------------------------------------------------------- |
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80 | CONTAINS |
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81 | SUBROUTINE bdy_tra(kt) ! Empty routine |
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82 | WRITE(*,*) 'bdy_tra: You should not have seen this print! error?', kt |
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83 | END SUBROUTINE bdy_tra |
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84 | #endif |
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85 | |
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86 | !!====================================================================== |
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87 | END MODULE bdytra |
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