| 1 | MODULE bdyice |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE bdyice *** |
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| 4 | !! Unstructured Open Boundary Cond. : Flow Relaxation Scheme applied sea-ice |
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| 5 | !!====================================================================== |
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| 6 | !! History : 3.3 ! 2010-09 (D. Storkey) Original code |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | #if defined key_bdy && defined key_lim2 |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! 'key_bdy' and Unstructured Open Boundary Conditions |
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| 11 | !! 'key_lim2' LIM-2 sea ice model |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! bdy_ice_frs : 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 ice_2 ! LIM_2 ice variables |
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| 17 | USE dom_oce ! ocean space and time domain variables |
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| 18 | USE bdy_oce ! ocean open boundary conditions |
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| 19 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 20 | USE in_out_manager ! write to numout file |
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| 21 | USE lib_mpp ! distributed memory computing |
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| 22 | |
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| 23 | IMPLICIT NONE |
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| 24 | PRIVATE |
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| 25 | |
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| 26 | PUBLIC bdy_ice_frs ! routine called in sbcmod |
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| 27 | |
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| 28 | !!---------------------------------------------------------------------- |
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| 29 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 30 | !! $Id$ |
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| 31 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 32 | !!---------------------------------------------------------------------- |
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| 33 | CONTAINS |
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| 34 | |
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| 35 | SUBROUTINE bdy_ice_frs( kt ) |
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| 36 | !!------------------------------------------------------------------------------ |
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| 37 | !! *** SUBROUTINE bdy_ice_frs *** |
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| 38 | !! |
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| 39 | !! ** Purpose : Apply the Flow Relaxation Scheme for sea-ice fields in the case |
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| 40 | !! of unstructured open boundaries. Currently only tested for LIM2. |
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| 41 | !! |
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| 42 | !! Reference : Engedahl H., 1995: Use of the flow relaxation scheme in a three- |
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| 43 | !! dimensional baroclinic ocean model with realistic topography. Tellus, 365-382. |
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| 44 | !!------------------------------------------------------------------------------ |
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| 45 | INTEGER, INTENT( in ) :: kt ! model time step index |
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| 46 | !! |
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| 47 | INTEGER :: jb, jk, jgrd ! dummy loop indices |
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| 48 | INTEGER :: ii, ij ! local scalar |
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| 49 | REAL(wp) :: zwgt, zwgt1 ! local scalar |
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| 50 | !!------------------------------------------------------------------------------ |
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| 51 | ! |
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| 52 | jgrd = 1 ! Everything is at T-points here |
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| 53 | ! |
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| 54 | IF( ln_ice_frs ) THEN ! update ice fields by relaxation at the boundary |
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| 55 | DO jb = 1, nblen(jgrd) |
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| 56 | DO jk = 1, jpkm1 |
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| 57 | ii = nbi(jb,jgrd) |
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| 58 | ij = nbj(jb,jgrd) |
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| 59 | zwgt = nbw(jb,jgrd) |
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| 60 | zwgt1 = 1.e0 - nbw(jb,jgrd) |
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| 61 | frld (ii,ij) = ( frld (ii,ij) * zwgt1 + frld_bdy (jb) * zwgt ) * tmask(ii,ij,1) ! Leads fraction |
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| 62 | hicif(ii,ij) = ( hicif(ii,ij) * zwgt1 + hicif_bdy(jb) * zwgt ) * tmask(ii,ij,1) ! Ice depth |
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| 63 | hsnif(ii,ij) = ( hsnif(ii,ij) * zwgt1 + hsnif_bdy(jb) * zwgt ) * tmask(ii,ij,1) ! Snow depth |
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| 64 | END DO |
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| 65 | END DO |
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| 66 | CALL lbc_lnk( frld, 'T', 1. ) ! lateral boundary conditions |
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| 67 | CALL lbc_lnk( hicif, 'T', 1. ) ; CALL lbc_lnk( hsnif, 'T', 1. ) |
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| 68 | ! |
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| 69 | ELSE ! we have called this routine without ln_ice_frs not set |
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| 70 | IF( kt == nit000 ) CALL ctl_warn( 'E R R O R (possible) called bdy_ice_frs when ln_ice_frs is false?' ) |
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| 71 | ENDIF |
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| 72 | ! |
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| 73 | END SUBROUTINE bdy_ice_frs |
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| 74 | #else |
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| 75 | !!--------------------------------------------------------------------------------- |
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| 76 | !! Default option Empty module |
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| 77 | !!--------------------------------------------------------------------------------- |
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| 78 | CONTAINS |
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| 79 | SUBROUTINE bdy_ice_frs( kt ) ! Empty routine |
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| 80 | WRITE(*,*) 'bdy_ice_frs: You should not have seen this print! error?', kt |
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| 81 | END SUBROUTINE bdy_ice_frs |
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| 82 | #endif |
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| 83 | |
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| 84 | !!================================================================================= |
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| 85 | END MODULE bdyice |
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