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bdyice_lim2.F90 in trunk/NEMOGCM/NEMO/OPA_SRC/BDY – NEMO

source: trunk/NEMOGCM/NEMO/OPA_SRC/BDY/bdyice_lim2.F90 @ 3347

Last change on this file since 3347 was 3347, checked in by davestorkey, 10 years ago

Bug fix (typo) for bdyice_lim2.F90. Ticket 951.

File size: 5.3 KB
Line 
1MODULE bdyice_lim2
2   !!======================================================================
3   !!                       ***  MODULE  bdyice_lim2  ***
4   !! Unstructured Open Boundary Cond. :  Open boundary conditions for sea-ice (LIM2)
5   !!======================================================================
6   !!  History :  3.3  !  2010-09 (D. Storkey)  Original code
7   !!             3.4  !  2011    (D. Storkey) rewrite in preparation for OBC-BDY merge
8   !!----------------------------------------------------------------------
9#if defined   key_bdy   &&   defined key_lim2
10   !!----------------------------------------------------------------------
11   !!   'key_bdy'            and                 Unstructured Open Boundary Conditions
12   !!   'key_lim2'                                                 LIM-2 sea ice model
13   !!----------------------------------------------------------------------
14   !!   bdy_ice_lim_2      : Application of open boundaries to ice
15   !!   bdy_ice_frs        : Application of Flow Relaxation Scheme
16   !!----------------------------------------------------------------------
17   USE timing          ! Timing
18   USE oce             ! ocean dynamics and tracers variables
19   USE ice_2           ! LIM_2 ice variables
20   USE dom_oce         ! ocean space and time domain variables
21   USE bdy_oce         ! ocean open boundary conditions
22   USE lbclnk          ! ocean lateral boundary conditions (or mpp link)
23   USE in_out_manager  ! write to numout file
24   USE lib_mpp         ! distributed memory computing
25   
26   IMPLICIT NONE
27   PRIVATE
28
29   PUBLIC   bdy_ice_lim_2    ! routine called in sbcmod
30
31   !!----------------------------------------------------------------------
32   !! NEMO/OPA 3.3 , NEMO Consortium (2010)
33   !! $Id: bdyice.F90 2715 2011-03-30 15:58:35Z rblod $
34   !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
35   !!----------------------------------------------------------------------
36CONTAINS
37
38   SUBROUTINE bdy_ice_lim_2( kt )
39      !!----------------------------------------------------------------------
40      !!                  ***  SUBROUTINE bdy_ice_lim_2  ***
41      !!
42      !! ** Purpose : - Apply open boundary conditions for ice (LIM2)
43      !!
44      !!----------------------------------------------------------------------
45      INTEGER, INTENT( in ) :: kt     ! Main time step counter
46      !!
47      INTEGER               :: ib_bdy ! Loop index
48
49      DO ib_bdy=1, nb_bdy
50
51         SELECT CASE( nn_ice_lim2(ib_bdy) )
52         CASE(jp_none)
53            CYCLE
54         CASE(jp_frs)
55            CALL bdy_ice_frs( idx_bdy(ib_bdy), dta_bdy(ib_bdy) )
56         CASE DEFAULT
57            CALL ctl_stop( 'bdy_ice_lim_2 : unrecognised option for open boundaries for ice fields' )
58         END SELECT
59      ENDDO
60
61   END SUBROUTINE bdy_ice_lim_2
62
63   SUBROUTINE bdy_ice_frs( idx, dta )
64      !!------------------------------------------------------------------------------
65      !!                 ***  SUBROUTINE bdy_ice_frs  ***
66      !!                   
67      !! ** Purpose : Apply the Flow Relaxation Scheme for sea-ice fields in the case
68      !!              of unstructured open boundaries. Currently only tested for LIM2.
69      !!
70      !! Reference : Engedahl H., 1995: Use of the flow relaxation scheme in a three-
71      !!             dimensional baroclinic ocean model with realistic topography. Tellus, 365-382.
72      !!------------------------------------------------------------------------------
73      TYPE(OBC_INDEX), INTENT(in) ::   idx  ! OBC indices
74      TYPE(OBC_DATA),  INTENT(in) ::   dta  ! OBC external data
75      !!
76      INTEGER  ::   jb, jk, jgrd   ! dummy loop indices
77      INTEGER  ::   ii, ij         ! local scalar
78      REAL(wp) ::   zwgt, zwgt1    ! local scalar
79      !!------------------------------------------------------------------------------
80      !
81      IF( nn_timing == 1 ) CALL timing_start('bdy_ice_frs')
82      !
83      jgrd = 1      ! Everything is at T-points here
84      !
85      DO jb = 1, idx%nblen(jgrd)
86         DO jk = 1, jpkm1
87            ii    = idx%nbi(jb,jgrd)
88            ij    = idx%nbj(jb,jgrd)
89            zwgt  = idx%nbw(jb,jgrd)
90            zwgt1 = 1.e0 - idx%nbw(jb,jgrd)
91            frld (ii,ij) = ( frld (ii,ij) * zwgt1 + dta%frld (jb) * zwgt ) * tmask(ii,ij,1)     ! Leads fraction
92            hicif(ii,ij) = ( hicif(ii,ij) * zwgt1 + dta%hicif(jb) * zwgt ) * tmask(ii,ij,1)     ! Ice depth
93            hsnif(ii,ij) = ( hsnif(ii,ij) * zwgt1 + dta%hsnif(jb) * zwgt ) * tmask(ii,ij,1)     ! Snow depth
94         END DO
95      END DO
96      CALL lbc_lnk( frld, 'T', 1. )                                         ! lateral boundary conditions
97      CALL lbc_lnk( hicif, 'T', 1. )   ;   CALL lbc_lnk( hsnif, 'T', 1. )
98      !     
99      IF( nn_timing == 1 ) CALL timing_stop('bdy_ice_frs')
100      !
101   END SUBROUTINE bdy_ice_frs
102#else
103   !!---------------------------------------------------------------------------------
104   !!   Default option                                                    Empty module
105   !!---------------------------------------------------------------------------------
106CONTAINS
107   SUBROUTINE bdy_ice_lim_2( kt )      ! Empty routine
108      WRITE(*,*) 'bdy_ice_frs_lim_2: You should not have seen this print! error?', kt
109   END SUBROUTINE bdy_ice_lim_2
110#endif
111
112   !!=================================================================================
113END MODULE bdyice_lim2
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