| 1 | MODULE icbstp |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE icbstp *** |
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| 4 | !! Icebergs: initialise variables for iceberg tracking |
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| 5 | !!====================================================================== |
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| 6 | !! History : 3.3.1 ! 2010-01 (Martin&Adcroft) Original code |
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| 7 | !! - ! 2011-03 (Madec) Part conversion to NEMO form |
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| 8 | !! - ! Removal of mapping from another grid |
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| 9 | !! - ! 2011-04 (Alderson) Split into separate modules |
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| 10 | !! - ! Move budgets to icbdia routine |
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| 11 | !! - ! 2011-05 (Alderson) Add call to copy forcing arrays |
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| 12 | !! - ! into icb copies with haloes |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | !! icb_stp : start iceberg tracking |
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| 17 | !! icb_end : end iceberg tracking |
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| 18 | !!---------------------------------------------------------------------- |
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| 19 | USE par_oce ! nemo parameters |
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| 20 | USE dom_oce ! ocean domain |
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| 21 | USE sbc_oce ! ocean surface forcing |
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| 22 | USE phycst ! physical constants |
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| 23 | ! |
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| 24 | USE icb_oce ! iceberg: define arrays |
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| 25 | USE icbini ! iceberg: initialisation routines |
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| 26 | USE icbutl ! iceberg: utility routines |
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| 27 | USE icbrst ! iceberg: restart routines |
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| 28 | USE icbdyn ! iceberg: dynamics (ie advection) routines |
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| 29 | USE icbclv ! iceberg: calving routines |
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| 30 | USE icbthm ! iceberg: thermodynamics routines |
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| 31 | USE icblbc ! iceberg: lateral boundary routines (including mpp) |
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| 32 | USE icbtrj ! iceberg: trajectory I/O routines |
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| 33 | USE icbdia ! iceberg: budget |
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| 34 | ! |
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| 35 | USE in_out_manager ! nemo IO |
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| 36 | USE lib_mpp ! massively parallel library |
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| 37 | USE iom ! I/O manager |
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| 38 | USE fldread ! field read |
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| 39 | USE timing ! timing |
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| 40 | |
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| 41 | IMPLICIT NONE |
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| 42 | PRIVATE |
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| 43 | |
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| 44 | PUBLIC icb_stp ! routine called in sbcmod.F90 module |
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| 45 | PUBLIC icb_end ! routine called in nemogcm.F90 module |
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| 46 | |
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| 47 | !!---------------------------------------------------------------------- |
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| 48 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 49 | !! $Id$ |
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| 50 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 51 | !!---------------------------------------------------------------------- |
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| 52 | CONTAINS |
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| 53 | |
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| 54 | SUBROUTINE icb_stp( kt, Kmm ) |
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| 55 | !!---------------------------------------------------------------------- |
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| 56 | !! *** ROUTINE icb_stp *** |
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| 57 | !! |
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| 58 | !! ** Purpose : iceberg time stepping. |
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| 59 | !! |
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| 60 | !! ** Method : - top level routine to do things in the correct order |
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| 61 | !!---------------------------------------------------------------------- |
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| 62 | INTEGER, INTENT(in) :: kt ! time step index |
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| 63 | INTEGER, INTENT(in) :: Kmm ! ocean time level index |
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| 64 | ! |
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| 65 | LOGICAL :: ll_sample_traj, ll_budget, ll_verbose ! local logical |
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| 66 | !!---------------------------------------------------------------------- |
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| 67 | ! |
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| 68 | IF( ln_timing ) CALL timing_start('icb_stp') |
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| 69 | |
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| 70 | ! !== start of timestep housekeeping ==! |
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| 71 | ! |
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| 72 | nktberg = kt |
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| 73 | ! |
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| 74 | !CALL test_icb_utl_getkb |
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| 75 | !CALL ctl_stop('end test icb') |
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| 76 | ! |
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| 77 | IF( nn_test_icebergs < 0 .OR. ln_use_calving ) THEN !* read calving data |
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| 78 | ! |
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| 79 | CALL fld_read ( kt, 1, sf_icb ) |
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| 80 | src_calving (:,:) = sf_icb(1)%fnow(:,:,1) ! calving in km^3/year (water equivalent) |
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| 81 | src_calving_hflx(:,:) = 0._wp ! NO heat flux for now |
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| 82 | ! |
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| 83 | ENDIF |
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| 84 | ! |
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| 85 | berg_grid%floating_melt(:,:) = 0._wp |
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| 86 | ! |
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| 87 | ! !* anything that needs to be reset to zero each timestep |
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| 88 | CALL icb_dia_step() ! for budgets is dealt with here |
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| 89 | ! |
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| 90 | ! !* write out time |
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| 91 | ll_verbose = .FALSE. |
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| 92 | IF( nn_verbose_write > 0 .AND. MOD( kt-1 , nn_verbose_write ) == 0 ) ll_verbose = ( nn_verbose_level > 0 ) |
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| 93 | ! |
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| 94 | IF( ll_verbose ) WRITE(numicb,9100) nktberg, ndastp, nsec_day |
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| 95 | 9100 FORMAT('kt= ',i8, ' day= ',i8,' secs=',i8) |
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| 96 | ! |
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| 97 | ! !* copy nemo forcing arrays into iceberg versions with extra halo |
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| 98 | CALL icb_utl_copy( Kmm ) ! only necessary for variables not on T points |
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| 99 | ! |
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| 100 | ! |
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| 101 | ! !== process icebergs ==! |
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| 102 | ! ! |
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| 103 | CALL icb_clv_flx( kt ) ! Accumulate ice from calving |
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| 104 | ! ! |
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| 105 | CALL icb_clv( kt ) ! Calve excess stored ice into icebergs |
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| 106 | ! ! |
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| 107 | ! |
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| 108 | ! !== For each berg, evolve ==! |
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| 109 | ! |
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| 110 | IF( ASSOCIATED(first_berg) ) CALL icb_dyn( kt ) ! ice berg dynamics |
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| 111 | |
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| 112 | IF( lk_mpp ) THEN ; CALL icb_lbc_mpp() ! Send bergs to other PEs |
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| 113 | ELSE ; CALL icb_lbc() ! Deal with any cyclic boundaries in non-mpp case |
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| 114 | ENDIF |
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| 115 | |
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| 116 | IF( ASSOCIATED(first_berg) ) CALL icb_thm( kt ) ! Ice berg thermodynamics (melting) + rolling |
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| 117 | ! |
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| 118 | ! |
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| 119 | ! !== diagnostics and output ==! |
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| 120 | ! |
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| 121 | ! !* For each berg, record trajectory (when needed) |
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| 122 | ll_sample_traj = .FALSE. |
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| 123 | IF( nn_sample_rate > 0 .AND. MOD(kt-1,nn_sample_rate) == 0 ) ll_sample_traj = .TRUE. |
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| 124 | IF( ll_sample_traj .AND. ASSOCIATED(first_berg) ) CALL icb_trj_write( kt ) |
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| 125 | |
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| 126 | ! !* Gridded diagnostics |
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| 127 | ! ! To get these iom_put's and those preceding to actually do something |
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| 128 | ! ! use key_iomput in cpp file and create content for XML file |
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| 129 | ! |
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| 130 | CALL iom_put( "calving" , berg_grid%calving (:,:) ) ! 'calving mass input' |
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| 131 | CALL iom_put( "berg_floating_melt", berg_grid%floating_melt(:,:) ) ! 'Melt rate of icebergs + bits' , 'kg/m2/s' |
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| 132 | CALL iom_put( "berg_stored_ice" , berg_grid%stored_ice (:,:,:) ) ! 'Accumulated ice mass by class', 'kg' |
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| 133 | ! |
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| 134 | CALL icb_dia_put() !* store mean budgets |
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| 135 | ! |
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| 136 | ! !* Dump icebergs to screen |
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| 137 | IF( nn_verbose_level >= 2 ) CALL icb_utl_print( 'icb_stp, status', kt ) |
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| 138 | ! |
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| 139 | ! !* Diagnose budgets |
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| 140 | ll_budget = .FALSE. |
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| 141 | IF( nn_verbose_write > 0 .AND. MOD(kt-1,nn_verbose_write) == 0 ) ll_budget = ln_bergdia |
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| 142 | CALL icb_dia( ll_budget ) |
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| 143 | ! |
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| 144 | IF( lrst_oce ) THEN !* restart |
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| 145 | CALL icb_rst_write( kt ) |
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| 146 | IF( nn_sample_rate > 0 ) CALL icb_trj_sync() |
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| 147 | ENDIF |
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| 148 | ! |
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| 149 | IF( ln_timing ) CALL timing_stop('icb_stp') |
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| 150 | ! |
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| 151 | END SUBROUTINE icb_stp |
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| 152 | |
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| 153 | |
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| 154 | SUBROUTINE icb_end( kt ) |
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| 155 | !!---------------------------------------------------------------------- |
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| 156 | !! *** ROUTINE icb_end *** |
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| 157 | !! |
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| 158 | !! ** Purpose : close iceberg files |
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| 159 | !! |
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| 160 | !!---------------------------------------------------------------------- |
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| 161 | INTEGER, INTENT( in ) :: kt ! model time-step index |
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| 162 | !!---------------------------------------------------------------------- |
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| 163 | ! |
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| 164 | ! finish with trajectories if they were written |
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| 165 | IF( nn_sample_rate > 0 ) CALL icb_trj_end() |
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| 166 | |
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| 167 | IF(lwp) WRITE(numout,'(a,i6)') 'icebergs: icb_end complete', narea |
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| 168 | ! |
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| 169 | IF( nn_verbose_level > 0 ) THEN |
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| 170 | CALL flush( numicb ) |
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| 171 | CLOSE( numicb ) |
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| 172 | ENDIF |
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| 173 | ! |
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| 174 | END SUBROUTINE icb_end |
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| 175 | |
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| 176 | !!====================================================================== |
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| 177 | END MODULE icbstp |
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