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icbstp.F90 in branches/UKMO/dev_r5518_sshiau_off/NEMOGCM/NEMO/OPA_SRC/ICB – NEMO

source: branches/UKMO/dev_r5518_sshiau_off/NEMOGCM/NEMO/OPA_SRC/ICB/icbstp.F90 @ 7697

Last change on this file since 7697 was 7697, checked in by anaguiar, 7 years ago

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1MODULE icbstp
2
3   !!======================================================================
4   !!                       ***  MODULE  icbstp  ***
5   !! Icebergs:  initialise variables for iceberg tracking
6   !!======================================================================
7   !! History : 3.3.1 !  2010-01  (Martin&Adcroft) Original code
8   !!            -    !  2011-03  (Madec)          Part conversion to NEMO form
9   !!            -    !                            Removal of mapping from another grid
10   !!            -    !  2011-04  (Alderson)       Split into separate modules
11   !!            -    !                            Move budgets to icbdia routine
12   !!            -    !  2011-05  (Alderson)       Add call to copy forcing arrays
13   !!            -    !                            into icb copies with haloes
14   !!----------------------------------------------------------------------
15   !!----------------------------------------------------------------------
16   !!   icb_stp       : start iceberg tracking
17   !!   icb_end       : end   iceberg tracking
18   !!----------------------------------------------------------------------
19   USE par_oce        ! nemo parameters
20   USE dom_oce        ! ocean domain
21   USE sbc_oce        ! ocean surface forcing
22   USE phycst
23   USE in_out_manager ! nemo IO
24   USE lib_mpp
25   USE iom
26   USE fldread
27   USE timing         ! timing
28
29   USE icb_oce        ! define iceberg arrays
30   USE icbini         ! iceberg initialisation routines
31   USE icbutl         ! iceberg utility routines
32   USE icbrst         ! iceberg restart routines
33   USE icbdyn         ! iceberg dynamics (ie advection) routines
34   USE icbclv         ! iceberg calving routines
35   USE icbthm         ! iceberg thermodynamics routines
36   USE icblbc         ! iceberg lateral boundary routines (including mpp)
37   USE icbtrj         ! iceberg trajectory I/O routines
38   USE icbdia         ! iceberg budget
39
40   IMPLICIT NONE
41   PRIVATE
42
43   PUBLIC   icb_stp        ! routine called in sbcmod.F90 module
44   PUBLIC   icb_end        ! routine called in nemogcm.F90 module
45
46   !!----------------------------------------------------------------------
47   !! NEMO/OPA 3.3 , NEMO Consortium (2011)
48   !! $Id$
49   !! Software governed by the CeCILL licence     (NEMOGCM/NEMO_CeCILL.txt)
50   !!----------------------------------------------------------------------
51CONTAINS
52
53   SUBROUTINE icb_stp( kt )
54      !!----------------------------------------------------------------------
55      !!                  ***  ROUTINE icb_stp  ***
56      !!
57      !! ** Purpose :   iceberg time stepping.
58      !!
59      !! ** Method  : - top level routine to do things in the correct order
60      !!----------------------------------------------------------------------
61      INTEGER, INTENT(in) ::   kt   ! time step index
62      !
63      LOGICAL ::   ll_sample_traj, ll_budget, ll_verbose   ! local logical
64      !!----------------------------------------------------------------------
65      !
66      IF( nn_timing == 1 ) CALL timing_start('icb_stp')
67
68      !! start of timestep housekeeping
69
70      nktberg = kt
71
72      IF( nn_test_icebergs < 0 ) THEN      ! read calving data
73         !
74         CALL fld_read ( kt, 1, sf_icb )
75         src_calving(:,:)      = sf_icb(1)%fnow(:,:,1)    ! calving in km^3/year (water equivalent)
76         src_calving_hflx(:,:) = 0._wp                    ! NO heat flux for now
77         !
78      ENDIF
79
80      berg_grid%floating_melt(:,:) = 0._wp
81
82      ! anything that needs to be reset to zero each timestep for budgets is dealt with here
83      CALL icb_dia_step()
84
85      ll_verbose = .FALSE.
86      IF( nn_verbose_write > 0 .AND. &
87          MOD(kt-1,nn_verbose_write ) == 0 )   ll_verbose = nn_verbose_level >= 0
88
89      ! write out time
90      IF( ll_verbose ) WRITE(numicb,9100) nktberg, ndastp, nsec_day
91 9100 FORMAT('kt= ',i8, ' day= ',i8,' secs=',i8)
92
93      ! copy nemo forcing arrays into iceberg versions with extra halo
94      ! only necessary for variables not on T points
95      CALL icb_utl_copy()
96
97      !!----------------------------------------------------------------------
98      !! process icebergs
99
100                                     CALL icb_clv_flx( kt )   ! Accumulate ice from calving
101
102                                     CALL icb_clv()           ! Calve excess stored ice into icebergs
103
104
105!                               !==  For each berg, evolve  ==!
106      !
107      IF( ASSOCIATED(first_berg) )   CALL icb_dyn( kt )       ! ice berg dynamics
108
109      IF( lk_mpp ) THEN          ;   CALL icb_lbc_mpp()       ! Send bergs to other PEs
110      ELSE                       ;   CALL icb_lbc()           ! Deal with any cyclic boundaries in non-mpp case
111      ENDIF
112
113      IF( ASSOCIATED(first_berg) )   CALL icb_thm( kt )       ! Ice berg thermodynamics (melting) + rolling
114
115      !!----------------------------------------------------------------------
116      !! end of timestep housekeeping
117
118      ll_sample_traj = .FALSE.
119      IF( nn_sample_rate > 0 .AND. MOD(kt-1,nn_sample_rate) == 0 )   ll_sample_traj = .TRUE.
120      IF( ll_sample_traj .AND.   &
121          ASSOCIATED(first_berg) )   CALL icb_trj_write( kt )  ! For each berg, record trajectory
122
123      ! Gridded diagnostics
124      ! To get these iom_put's and those preceding to actually do something
125      ! use key_iomput in cpp file and create content for XML file
126
127      CALL iom_put( "calving"           , berg_grid%calving      (:,:)   )  ! 'calving mass input'
128      CALL iom_put( "berg_floating_melt", berg_grid%floating_melt(:,:)   )  ! 'Melt rate of icebergs + bits' , 'kg/m2/s'
129      CALL iom_put( "berg_stored_ice"   , berg_grid%stored_ice   (:,:,:) )  ! 'Accumulated ice mass by class', 'kg'
130
131      ! store mean budgets
132      CALL icb_dia_put()
133
134      ! Dump icebergs to screen
135      if ( nn_verbose_level >= 2 )   CALL icb_utl_print( 'icb_stp, status', kt )
136
137      ! Diagnose budgets
138      ll_budget = .FALSE.
139      IF( nn_verbose_write > 0 .AND. MOD(kt-1,nn_verbose_write) == 0 )   ll_budget = ln_bergdia
140      CALL icb_dia( ll_budget )
141
142      IF( MOD(kt,nn_stock) == 0 ) THEN
143         CALL icb_rst_write( kt )
144         IF( nn_sample_rate > 0 )   CALL icb_trj_sync()
145      ENDIF
146
147      IF( nn_timing == 1 ) CALL timing_stop('icb_stp')
148      !
149   END SUBROUTINE icb_stp
150
151
152   SUBROUTINE icb_end( kt )
153      !!----------------------------------------------------------------------
154      !!                  ***  ROUTINE icb_end  ***
155      !!
156      !! ** Purpose :   close iceberg files
157      !!
158      !!----------------------------------------------------------------------
159      INTEGER, INTENT( in )  :: kt
160      !!----------------------------------------------------------------------
161
162      ! only write a restart if not done in icb_stp
163      IF( MOD(kt,nn_stock) .NE. 0 ) CALL icb_rst_write( kt )
164
165      ! finish with trajectories if they were written
166      IF( nn_sample_rate .GT. 0 ) CALL icb_trj_end()
167
168      IF(lwp)   WRITE(numout,'(a,i6)') 'icebergs: icb_end complete', narea
169      CALL flush( numicb )
170      CLOSE( numicb )
171      !
172   END SUBROUTINE icb_end
173
174   !!-------------------------------------------------------------------------
175
176END MODULE icbstp
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