| 1 | MODULE obcice_lim2 |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE obcice_lim2 *** |
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| 4 | !! Unstructured Open Boundary Cond. : Flow Relaxation Scheme applied sea-ice (LIM2) |
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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_obc && defined key_lim2 |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! 'key_obc' 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 | !! obc_ice_lim_2 : Application of open boundaries to ice |
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| 14 | !! obc_ice_frs : Application of Flow Relaxation Scheme |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | USE oce ! ocean dynamics and tracers variables |
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| 17 | USE ice_2 ! LIM_2 ice variables |
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| 18 | USE dom_oce ! ocean space and time domain variables |
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| 19 | USE obc_oce ! ocean open boundary conditions |
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| 20 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 21 | USE in_out_manager ! write to numout file |
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| 22 | USE lib_mpp ! distributed memory computing |
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| 23 | |
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| 24 | IMPLICIT NONE |
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| 25 | PRIVATE |
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| 26 | |
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| 27 | PUBLIC obc_ice_lim_2 ! routine called in sbcmod |
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| 28 | |
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| 29 | !!---------------------------------------------------------------------- |
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| 30 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 31 | !! $Id: obcice.F90 2715 2011-03-30 15:58:35Z rblod $ |
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| 32 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 33 | !!---------------------------------------------------------------------- |
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| 34 | CONTAINS |
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| 35 | |
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| 36 | SUBROUTINE obc_ice_lim_2( kt ) |
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| 37 | !!---------------------------------------------------------------------- |
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| 38 | !! *** SUBROUTINE obc_ice_lim_2 *** |
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| 39 | !! |
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| 40 | !! ** Purpose : - Apply open boundary conditions for ice (LIM2) |
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| 41 | !! |
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| 42 | !!---------------------------------------------------------------------- |
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| 43 | INTEGER, INTENT( in ) :: kt ! Main time step counter |
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| 44 | !! |
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| 45 | INTEGER :: ib_obc ! Loop index |
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| 46 | |
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| 47 | DO ib_obc=1, nb_obc |
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| 48 | |
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| 49 | SELECT CASE( nn_ice_lim2(ib_obc) ) |
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| 50 | CASE(jp_none) |
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| 51 | CYCLE |
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| 52 | CASE(jp_frs) |
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| 53 | CALL obc_ice_frs( idx_obc(ib_obc), dta_idx(ib_obc) ) |
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| 54 | CASE DEFAULT |
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| 55 | CALL ctl_stop( 'obc_tra : unrecognised option for open boundaries for T an S' ) |
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| 56 | END SELECT |
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| 57 | ENDDO |
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| 58 | |
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| 59 | END SUBROUTINE obc_ice_lim_2 |
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| 60 | |
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| 61 | SUBROUTINE obc_ice_frs( idx, dta ) |
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| 62 | !!------------------------------------------------------------------------------ |
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| 63 | !! *** SUBROUTINE obc_ice_frs *** |
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| 64 | !! |
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| 65 | !! ** Purpose : Apply the Flow Relaxation Scheme for sea-ice fields in the case |
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| 66 | !! of unstructured open boundaries. Currently only tested for LIM2. |
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| 67 | !! |
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| 68 | !! Reference : Engedahl H., 1995: Use of the flow relaxation scheme in a three- |
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| 69 | !! dimensional baroclinic ocean model with realistic topography. Tellus, 365-382. |
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| 70 | !!------------------------------------------------------------------------------ |
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| 71 | TYPE(OBC_INDEX), INTENT(in) :: idx ! OBC indices |
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| 72 | TYPE(OBC_DATA), INTENT(in) :: dta ! OBC external data |
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| 73 | !! |
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| 74 | INTEGER :: jb, jk, jgrd ! dummy loop indices |
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| 75 | INTEGER :: ii, ij ! local scalar |
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| 76 | REAL(wp) :: zwgt, zwgt1 ! local scalar |
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| 77 | !!------------------------------------------------------------------------------ |
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| 78 | ! |
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| 79 | jgrd = 1 ! Everything is at T-points here |
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| 80 | ! |
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| 81 | DO jb = 1, idx%nblen(jgrd) |
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| 82 | DO jk = 1, jpkm1 |
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| 83 | ii = idx%nbi(jb,jgrd) |
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| 84 | ij = idx%nbj(jb,jgrd) |
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| 85 | zwgt = idx%nbw(jb,jgrd) |
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| 86 | zwgt1 = 1.e0 - idx%nbw(jb,jgrd) |
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| 87 | frld (ii,ij) = ( frld (ii,ij) * zwgt1 + dta%frld (jb) * zwgt ) * tmask(ii,ij,1) ! Leads fraction |
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| 88 | hicif(ii,ij) = ( hicif(ii,ij) * zwgt1 + dta%hicif(jb) * zwgt ) * tmask(ii,ij,1) ! Ice depth |
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| 89 | hsnif(ii,ij) = ( hsnif(ii,ij) * zwgt1 + dta%hsnif(jb) * zwgt ) * tmask(ii,ij,1) ! Snow depth |
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| 90 | END DO |
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| 91 | END DO |
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| 92 | CALL lbc_lnk( frld, 'T', 1. ) ! lateral boundary conditions |
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| 93 | CALL lbc_lnk( hicif, 'T', 1. ) ; CALL lbc_lnk( hsnif, 'T', 1. ) |
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| 94 | ! |
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| 95 | END SUBROUTINE obc_ice_frs |
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| 96 | #else |
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| 97 | !!--------------------------------------------------------------------------------- |
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| 98 | !! Default option Empty module |
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| 99 | !!--------------------------------------------------------------------------------- |
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| 100 | CONTAINS |
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| 101 | SUBROUTINE obc_ice_lim_2( kt ) ! Empty routine |
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| 102 | WRITE(*,*) 'obc_ice_frs: You should not have seen this print! error?', kt |
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| 103 | END SUBROUTINE obc_ice_lim_2 |
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| 104 | #endif |
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| 105 | |
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| 106 | !!================================================================================= |
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| 107 | END MODULE obcice_lim2 |
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