| 1 | MODULE icbini |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE icbini *** |
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| 4 | !! Icebergs: initialise variables for iceberg tracking |
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| 5 | !!====================================================================== |
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| 6 | !! History : - ! 2010-01 (T. Martin & A. Adcroft) Original code |
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| 7 | !! 3.3 ! 2011-03 (G. Madec) Part conversion to NEMO form ; Removal of mapping from another grid |
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| 8 | !! - ! 2011-04 (S. Alderson) Split into separate modules ; Restore restart routines |
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| 9 | !! - ! 2011-05 (S. Alderson) generate_test_icebergs restored ; new forcing arrays with extra halo ; |
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| 10 | !! - ! north fold exchange arrays added |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! icb_init : initialise icebergs |
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| 14 | !! icb_ini_gen : generate test icebergs |
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| 15 | !! icb_nam : read iceberg namelist |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | USE dom_oce ! ocean domain |
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| 18 | USE in_out_manager ! IO routines and numout in particular |
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| 19 | USE lib_mpp ! mpi library and lk_mpp in particular |
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| 20 | USE sbc_oce ! ocean : surface boundary condition |
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| 21 | USE sbc_ice ! sea-ice: surface boundary condition |
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| 22 | USE iom ! IOM library |
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| 23 | USE fldread ! field read |
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| 24 | USE lbclnk ! lateral boundary condition - MPP link |
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| 25 | ! |
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| 26 | USE icb_oce ! define iceberg arrays |
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| 27 | USE icbutl ! iceberg utility routines |
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| 28 | USE icbrst ! iceberg restart routines |
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| 29 | USE icbtrj ! iceberg trajectory I/O routines |
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| 30 | USE icbdia ! iceberg budget routines |
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| 31 | |
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| 32 | IMPLICIT NONE |
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| 33 | PRIVATE |
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| 34 | |
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| 35 | PUBLIC icb_init ! routine called in nemogcm.F90 module |
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| 36 | |
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| 37 | CHARACTER(len=100) :: cn_dir = './' !: Root directory for location of icb files |
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| 38 | TYPE(FLD_N) :: sn_icb !: information about the calving file to be read |
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| 39 | TYPE(FLD), PUBLIC, ALLOCATABLE , DIMENSION(:) :: sf_icb !: structure: file information, fields read |
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| 40 | !: used in icbini and icbstp |
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| 41 | !!---------------------------------------------------------------------- |
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| 42 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 43 | !! $Id$ |
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| 44 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 45 | !!---------------------------------------------------------------------- |
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| 46 | CONTAINS |
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| 47 | |
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| 48 | SUBROUTINE icb_init( pdt, kt ) |
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| 49 | !!---------------------------------------------------------------------- |
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| 50 | !! *** ROUTINE dom_init *** |
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| 51 | !! |
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| 52 | !! ** Purpose : iceberg initialization. |
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| 53 | !! |
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| 54 | !! ** Method : - read the iceberg namelist |
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| 55 | !! - find non-overlapping processor interior since we can only |
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| 56 | !! have one instance of a particular iceberg |
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| 57 | !! - calculate the destinations for north fold exchanges |
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| 58 | !! - setup either test icebergs or calving file |
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| 59 | !!---------------------------------------------------------------------- |
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| 60 | REAL(wp), INTENT(in) :: pdt ! iceberg time-step (rdt*nn_fsbc) |
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| 61 | INTEGER , INTENT(in) :: kt ! time step number |
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| 62 | ! |
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| 63 | INTEGER :: ji, jj, jn ! dummy loop indices |
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| 64 | INTEGER :: i1, i2, i3 ! local integers |
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| 65 | INTEGER :: ii, inum, ivar ! - - |
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| 66 | INTEGER :: istat1, istat2, istat3 ! - - |
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| 67 | CHARACTER(len=300) :: cl_sdist ! local character |
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| 68 | !!---------------------------------------------------------------------- |
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| 69 | ! |
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| 70 | CALL icb_nam ! Read and print namelist parameters |
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| 71 | ! |
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| 72 | IF( .NOT. ln_icebergs ) RETURN |
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| 73 | |
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| 74 | ! ! allocate gridded fields |
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| 75 | IF( icb_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'icb_alloc : unable to allocate arrays' ) |
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| 76 | ! |
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| 77 | ! ! initialised variable with extra haloes to zero |
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| 78 | uo_e(:,:) = 0._wp ; vo_e(:,:) = 0._wp ; |
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| 79 | ua_e(:,:) = 0._wp ; va_e(:,:) = 0._wp ; |
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| 80 | ff_e(:,:) = 0._wp ; tt_e(:,:) = 0._wp ; |
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| 81 | fr_e(:,:) = 0._wp ; |
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| 82 | #if defined key_si3 |
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| 83 | hi_e(:,:) = 0._wp ; |
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| 84 | ui_e(:,:) = 0._wp ; vi_e(:,:) = 0._wp ; |
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| 85 | #endif |
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| 86 | ssh_e(:,:) = 0._wp ; |
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| 87 | ! |
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| 88 | ! ! open ascii output file or files for iceberg status information |
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| 89 | ! ! note that we choose to do this on all processors since we cannot |
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| 90 | ! ! predict where icebergs will be ahead of time |
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| 91 | numicb=-1 |
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| 92 | IF( nn_verbose_level > 0 .AND. nprint>0) THEN |
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| 93 | CALL ctl_opn( numicb, 'icebergs.stat', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp, narea ) |
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| 94 | ELSE |
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| 95 | IF(lwp) CALL ctl_opn( numicb, 'icebergs.stat', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp, narea ) |
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| 96 | ENDIF |
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| 97 | |
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| 98 | ! set parameters (mostly from namelist) |
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| 99 | ! |
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| 100 | berg_dt = pdt |
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| 101 | first_width (:) = SQRT( rn_initial_mass(:) / ( rn_LoW_ratio * rn_rho_bergs * rn_initial_thickness(:) ) ) |
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| 102 | first_length(:) = rn_LoW_ratio * first_width(:) |
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| 103 | |
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| 104 | berg_grid%calving (:,:) = 0._wp |
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| 105 | berg_grid%calving_hflx (:,:) = 0._wp |
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| 106 | berg_grid%stored_heat (:,:) = 0._wp |
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| 107 | berg_grid%floating_melt(:,:) = 0._wp |
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| 108 | berg_grid%maxclass (:,:) = nclasses |
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| 109 | berg_grid%stored_ice (:,:,:) = 0._wp |
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| 110 | berg_grid%tmp (:,:) = 0._wp |
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| 111 | src_calving (:,:) = 0._wp |
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| 112 | src_calving_hflx (:,:) = 0._wp |
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| 113 | |
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| 114 | ! ! domain for icebergs |
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| 115 | IF( lk_mpp .AND. jpni == 1 ) CALL ctl_stop( 'icbinit: having ONE processor in x currently does not work' ) |
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| 116 | ! NB: the issue here is simply that cyclic east-west boundary condition have not been coded in mpp case |
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| 117 | ! for the north fold we work out which points communicate by asking |
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| 118 | ! lbc_lnk to pass processor number (valid even in single processor case) |
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| 119 | ! borrow src_calving arrays for this |
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| 120 | ! |
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| 121 | ! pack i and j together using a scaling of a power of 10 |
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| 122 | nicbpack = 10000 |
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| 123 | IF( jpiglo >= nicbpack ) CALL ctl_stop( 'icbini: processor index packing failure' ) |
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| 124 | nicbfldproc(:) = -1 |
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| 125 | |
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| 126 | DO jj = 1, jpj |
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| 127 | DO ji = 1, jpi |
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| 128 | src_calving_hflx(ji,jj) = narea |
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| 129 | src_calving (ji,jj) = nicbpack * mjg(jj) + mig(ji) |
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| 130 | END DO |
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| 131 | END DO |
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| 132 | CALL lbc_lnk( 'icbini', src_calving_hflx, 'T', 1._wp ) |
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| 133 | CALL lbc_lnk( 'icbini', src_calving , 'T', 1._wp ) |
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| 134 | |
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| 135 | ! work out interior of processor from exchange array |
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| 136 | ! first entry with narea for this processor is left hand interior index |
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| 137 | ! last entry is right hand interior index |
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| 138 | jj = nlcj/2 |
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| 139 | nicbdi = -1 |
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| 140 | nicbei = -1 |
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| 141 | DO ji = 1, jpi |
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| 142 | i3 = INT( src_calving(ji,jj) ) |
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| 143 | i2 = INT( i3/nicbpack ) |
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| 144 | i1 = i3 - i2*nicbpack |
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| 145 | i3 = INT( src_calving_hflx(ji,jj) ) |
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| 146 | IF( i1 == mig(ji) .AND. i3 == narea ) THEN |
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| 147 | IF( nicbdi < 0 ) THEN ; nicbdi = ji |
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| 148 | ELSE ; nicbei = ji |
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| 149 | ENDIF |
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| 150 | ENDIF |
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| 151 | END DO |
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| 152 | ! |
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| 153 | ! repeat for j direction |
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| 154 | ji = nlci/2 |
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| 155 | nicbdj = -1 |
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| 156 | nicbej = -1 |
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| 157 | DO jj = 1, jpj |
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| 158 | i3 = INT( src_calving(ji,jj) ) |
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| 159 | i2 = INT( i3/nicbpack ) |
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| 160 | i1 = i3 - i2*nicbpack |
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| 161 | i3 = INT( src_calving_hflx(ji,jj) ) |
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| 162 | IF( i2 == mjg(jj) .AND. i3 == narea ) THEN |
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| 163 | IF( nicbdj < 0 ) THEN ; nicbdj = jj |
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| 164 | ELSE ; nicbej = jj |
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| 165 | ENDIF |
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| 166 | ENDIF |
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| 167 | END DO |
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| 168 | ! |
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| 169 | ! special for east-west boundary exchange we save the destination index |
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| 170 | i1 = MAX( nicbdi-1, 1) |
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| 171 | i3 = INT( src_calving(i1,nlcj/2) ) |
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| 172 | jj = INT( i3/nicbpack ) |
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| 173 | ricb_left = REAL( i3 - nicbpack*jj, wp ) |
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| 174 | i1 = MIN( nicbei+1, jpi ) |
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| 175 | i3 = INT( src_calving(i1,nlcj/2) ) |
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| 176 | jj = INT( i3/nicbpack ) |
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| 177 | ricb_right = REAL( i3 - nicbpack*jj, wp ) |
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| 178 | |
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| 179 | ! north fold |
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| 180 | IF( npolj > 0 ) THEN |
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| 181 | ! |
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| 182 | ! icebergs in row nicbej+1 get passed across fold |
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| 183 | nicbfldpts(:) = INT( src_calving(:,nicbej+1) ) |
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| 184 | nicbflddest(:) = INT( src_calving_hflx(:,nicbej+1) ) |
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| 185 | ! |
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| 186 | ! work out list of unique processors to talk to |
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| 187 | ! pack them into a fixed size array where empty slots are marked by a -1 |
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| 188 | DO ji = nicbdi, nicbei |
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| 189 | ii = nicbflddest(ji) |
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| 190 | IF( ii .GT. 0 ) THEN ! Needed because land suppression can mean |
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| 191 | ! that unused points are not set in edge haloes |
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| 192 | DO jn = 1, jpni |
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| 193 | ! work along array until we find an empty slot |
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| 194 | IF( nicbfldproc(jn) == -1 ) THEN |
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| 195 | nicbfldproc(jn) = ii |
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| 196 | EXIT !!gm EXIT should be avoided: use DO WHILE expression instead |
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| 197 | ENDIF |
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| 198 | ! before we find an empty slot, we may find processor number is already here so we exit |
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| 199 | IF( nicbfldproc(jn) == ii ) EXIT |
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| 200 | END DO |
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| 201 | ENDIF |
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| 202 | END DO |
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| 203 | ENDIF |
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| 204 | ! |
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| 205 | IF( nn_verbose_level > 0 .AND. numicb.NE.-1 ) THEN |
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| 206 | WRITE(numicb,*) 'processor ', narea |
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| 207 | WRITE(numicb,*) 'jpi, jpj ', jpi, jpj |
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| 208 | WRITE(numicb,*) 'nldi, nlei ', nldi, nlei |
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| 209 | WRITE(numicb,*) 'nldj, nlej ', nldj, nlej |
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| 210 | WRITE(numicb,*) 'berg i interior ', nicbdi, nicbei |
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| 211 | WRITE(numicb,*) 'berg j interior ', nicbdj, nicbej |
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| 212 | WRITE(numicb,*) 'berg left ', ricb_left |
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| 213 | WRITE(numicb,*) 'berg right ', ricb_right |
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| 214 | jj = nlcj/2 |
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| 215 | WRITE(numicb,*) "central j line:" |
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| 216 | WRITE(numicb,*) "i processor" |
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| 217 | WRITE(numicb,*) (INT(src_calving_hflx(ji,jj)), ji=1,jpi) |
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| 218 | WRITE(numicb,*) "i point" |
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| 219 | WRITE(numicb,*) (INT(src_calving(ji,jj)), ji=1,jpi) |
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| 220 | ji = nlci/2 |
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| 221 | WRITE(numicb,*) "central i line:" |
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| 222 | WRITE(numicb,*) "j processor" |
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| 223 | WRITE(numicb,*) (INT(src_calving_hflx(ji,jj)), jj=1,jpj) |
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| 224 | WRITE(numicb,*) "j point" |
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| 225 | WRITE(numicb,*) (INT(src_calving(ji,jj)), jj=1,jpj) |
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| 226 | IF( npolj > 0 ) THEN |
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| 227 | WRITE(numicb,*) 'north fold destination points ' |
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| 228 | WRITE(numicb,*) nicbfldpts |
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| 229 | WRITE(numicb,*) 'north fold destination procs ' |
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| 230 | WRITE(numicb,*) nicbflddest |
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| 231 | WRITE(numicb,*) 'north fold destination proclist ' |
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| 232 | WRITE(numicb,*) nicbfldproc |
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| 233 | ENDIF |
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| 234 | CALL flush(numicb) |
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| 235 | ENDIF |
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| 236 | |
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| 237 | src_calving (:,:) = 0._wp |
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| 238 | src_calving_hflx(:,:) = 0._wp |
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| 239 | |
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| 240 | ! definition of extended surface masked needed by icb_bilin_h |
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| 241 | tmask_e(:,:) = 0._wp ; tmask_e(1:jpi,1:jpj) = tmask(:,:,1) |
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| 242 | umask_e(:,:) = 0._wp ; umask_e(1:jpi,1:jpj) = umask(:,:,1) |
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| 243 | vmask_e(:,:) = 0._wp ; vmask_e(1:jpi,1:jpj) = vmask(:,:,1) |
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| 244 | CALL lbc_lnk_icb( 'icbini', tmask_e, 'T', +1._wp, 1, 1 ) |
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| 245 | CALL lbc_lnk_icb( 'icbini', umask_e, 'T', +1._wp, 1, 1 ) |
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| 246 | CALL lbc_lnk_icb( 'icbini', vmask_e, 'T', +1._wp, 1, 1 ) |
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| 247 | ! |
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| 248 | ! assign each new iceberg with a unique number constructed from the processor number |
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| 249 | ! and incremented by the total number of processors |
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| 250 | num_bergs(:) = 0 |
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| 251 | num_bergs(1) = narea - jpnij |
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| 252 | |
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| 253 | ! when not generating test icebergs we need to setup calving file |
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| 254 | IF( nn_test_icebergs < 0 .OR. ln_use_calving ) THEN |
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| 255 | ! |
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| 256 | ! maximum distribution class array does not change in time so read it once |
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| 257 | cl_sdist = TRIM( cn_dir )//TRIM( sn_icb%clname ) |
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| 258 | CALL iom_open ( cl_sdist, inum ) ! open file |
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| 259 | ivar = iom_varid( inum, 'maxclass', ldstop=.FALSE. ) |
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| 260 | IF( ivar > 0 ) THEN |
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| 261 | CALL iom_get ( inum, jpdom_data, 'maxclass', src_calving ) ! read the max distribution array |
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| 262 | berg_grid%maxclass(:,:) = INT( src_calving ) |
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| 263 | src_calving(:,:) = 0._wp |
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| 264 | ENDIF |
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| 265 | CALL iom_close( inum ) ! close file |
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| 266 | ! |
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| 267 | IF( nn_verbose_level > 0 .AND. numicb.NE.-1 ) THEN |
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| 268 | WRITE(numicb,*) |
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| 269 | WRITE(numicb,*) ' calving read in a file' |
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| 270 | ENDIF |
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| 271 | ALLOCATE( sf_icb(1), STAT=istat1 ) ! Create sf_icb structure (calving) |
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| 272 | ALLOCATE( sf_icb(1)%fnow(jpi,jpj,1), STAT=istat2 ) |
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| 273 | ALLOCATE( sf_icb(1)%fdta(jpi,jpj,1,2), STAT=istat3 ) |
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| 274 | IF( istat1+istat2+istat3 > 0 ) THEN |
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| 275 | CALL ctl_stop( 'sbc_icb: unable to allocate sf_icb structure' ) ; RETURN |
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| 276 | ENDIF |
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| 277 | ! ! fill sf_icb with the namelist (sn_icb) and control print |
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| 278 | CALL fld_fill( sf_icb, (/ sn_icb /), cn_dir, 'icb_init', 'read calving data', 'namicb' ) |
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| 279 | ! |
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| 280 | ENDIF |
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| 281 | |
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| 282 | IF( .NOT.ln_rstart ) THEN |
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| 283 | IF( nn_test_icebergs > 0 ) CALL icb_ini_gen() |
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| 284 | ELSE |
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| 285 | IF( nn_test_icebergs > 0 ) THEN |
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| 286 | CALL icb_ini_gen() |
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| 287 | ELSE |
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| 288 | CALL icb_rst_read() |
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| 289 | l_restarted_bergs = .TRUE. |
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| 290 | ENDIF |
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| 291 | ENDIF |
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| 292 | ! |
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| 293 | IF( nn_sample_rate .GT. 0 ) CALL icb_trj_init( nitend ) |
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| 294 | ! |
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| 295 | CALL icb_dia_init() |
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| 296 | ! |
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| 297 | IF( nn_verbose_level >= 2 ) CALL icb_utl_print('icb_init, initial status', nit000-1) |
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| 298 | ! |
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| 299 | END SUBROUTINE icb_init |
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| 300 | |
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| 301 | |
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| 302 | SUBROUTINE icb_ini_gen() |
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| 303 | !!---------------------------------------------------------------------- |
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| 304 | !! *** ROUTINE icb_ini_gen *** |
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| 305 | !! |
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| 306 | !! ** Purpose : iceberg generation |
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| 307 | !! |
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| 308 | !! ** Method : - at each grid point of the test box supplied in the namelist |
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| 309 | !! generate an iceberg in one class determined by the value of |
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| 310 | !! parameter nn_test_icebergs |
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| 311 | !!---------------------------------------------------------------------- |
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| 312 | INTEGER :: ji, jj, ibergs |
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| 313 | TYPE(iceberg) :: localberg ! NOT a pointer but an actual local variable |
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| 314 | TYPE(point) :: localpt |
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| 315 | INTEGER :: iyr, imon, iday, ihr, imin, isec |
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| 316 | INTEGER :: iberg |
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| 317 | !!---------------------------------------------------------------------- |
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| 318 | |
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| 319 | ! For convenience |
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| 320 | iberg = nn_test_icebergs |
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| 321 | |
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| 322 | ! call get_date(Time, iyr, imon, iday, ihr, imin, isec) |
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| 323 | ! Convert nemo time variables from dom_oce into local versions |
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| 324 | iyr = nyear |
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| 325 | imon = nmonth |
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| 326 | iday = nday |
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| 327 | ihr = INT(nsec_day/3600) |
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| 328 | imin = INT((nsec_day-ihr*3600)/60) |
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| 329 | isec = nsec_day - ihr*3600 - imin*60 |
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| 330 | |
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| 331 | ! no overlap for icebergs since we want only one instance of each across the whole domain |
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| 332 | ! so restrict area of interest |
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| 333 | ! use tmask here because tmask_i has been doctored on one side of the north fold line |
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| 334 | |
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| 335 | DO jj = nicbdj, nicbej |
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| 336 | DO ji = nicbdi, nicbei |
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| 337 | IF( tmask(ji,jj,1) > 0._wp .AND. & |
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| 338 | rn_test_box(1) < glamt(ji,jj) .AND. glamt(ji,jj) < rn_test_box(2) .AND. & |
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| 339 | rn_test_box(3) < gphit(ji,jj) .AND. gphit(ji,jj) < rn_test_box(4) ) THEN |
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| 340 | localberg%mass_scaling = rn_mass_scaling(iberg) |
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| 341 | localpt%xi = REAL( mig(ji), wp ) |
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| 342 | localpt%yj = REAL( mjg(jj), wp ) |
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| 343 | localpt%lon = icb_utl_bilin(glamt, localpt%xi, localpt%yj, 'T' ) |
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| 344 | localpt%lat = icb_utl_bilin(gphit, localpt%xi, localpt%yj, 'T' ) |
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| 345 | localpt%mass = rn_initial_mass (iberg) |
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| 346 | localpt%thickness = rn_initial_thickness(iberg) |
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| 347 | localpt%width = first_width (iberg) |
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| 348 | localpt%length = first_length(iberg) |
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| 349 | localpt%year = iyr |
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| 350 | localpt%day = REAL(iday,wp)+(REAL(ihr,wp)+REAL(imin,wp)/60._wp)/24._wp |
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| 351 | localpt%mass_of_bits = 0._wp |
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| 352 | localpt%heat_density = 0._wp |
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| 353 | localpt%uvel = 0._wp |
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| 354 | localpt%vvel = 0._wp |
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| 355 | CALL icb_utl_incr() |
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| 356 | localberg%number(:) = num_bergs(:) |
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| 357 | call icb_utl_add(localberg, localpt) |
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| 358 | ENDIF |
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| 359 | END DO |
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| 360 | END DO |
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| 361 | ! |
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| 362 | ibergs = icb_utl_count() |
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| 363 | CALL mpp_sum('icbini', ibergs) |
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| 364 | IF( nn_verbose_level > 0 .AND. numicb.NE.-1 ) THEN |
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| 365 | WRITE(numicb,'(a,i6,a)') 'diamonds, icb_ini_gen: ',ibergs,' were generated' |
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| 366 | ENDIF |
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| 367 | ! |
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| 368 | END SUBROUTINE icb_ini_gen |
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| 369 | |
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| 370 | |
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| 371 | SUBROUTINE icb_nam |
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| 372 | !!---------------------------------------------------------------------- |
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| 373 | !! *** ROUTINE icb_nam *** |
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| 374 | !! |
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| 375 | !! ** Purpose : read iceberg namelist and print the variables. |
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| 376 | !! |
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| 377 | !! ** input : - namberg namelist |
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| 378 | !!---------------------------------------------------------------------- |
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| 379 | INTEGER :: jn ! dummy loop indices |
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| 380 | INTEGER :: ios ! Local integer output status for namelist read |
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| 381 | REAL(wp) :: zfact ! local scalar |
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| 382 | ! |
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| 383 | NAMELIST/namberg/ ln_icebergs , ln_bergdia , nn_sample_rate , rn_initial_mass , & |
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| 384 | & rn_distribution, rn_mass_scaling, rn_initial_thickness, nn_verbose_write , & |
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| 385 | & rn_rho_bergs , rn_LoW_ratio , nn_verbose_level , ln_operator_splitting, & |
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| 386 | & rn_bits_erosion_fraction , rn_sicn_shift , ln_passive_mode , & |
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| 387 | & ln_time_average_weight , nn_test_icebergs , rn_test_box , & |
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| 388 | & ln_use_calving , rn_speed_limit , cn_dir, sn_icb |
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| 389 | !!---------------------------------------------------------------------- |
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| 390 | |
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| 391 | #if defined key_agrif |
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| 392 | IF(lwp) THEN |
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| 393 | WRITE(numout,*) |
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| 394 | WRITE(numout,*) 'icb_nam : AGRIF is not compatible with namelist namberg : ' |
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| 395 | WRITE(numout,*) '~~~~~~~ definition of rn_initial_mass(nclasses) with nclasses as PARAMETER ' |
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| 396 | WRITE(numout,*) |
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| 397 | WRITE(numout,*) ' ==>>> force NO icebergs used. The namelist namberg is not read' |
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| 398 | ENDIF |
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| 399 | ln_icebergs = .false. |
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| 400 | RETURN |
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| 401 | #else |
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| 402 | IF(lwp) THEN |
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| 403 | WRITE(numout,*) |
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| 404 | WRITE(numout,*) 'icb_nam : iceberg initialization through namberg namelist read' |
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| 405 | WRITE(numout,*) '~~~~~~~~ ' |
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| 406 | ENDIF |
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| 407 | #endif |
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| 408 | ! !== read namelist ==! |
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| 409 | REWIND( numnam_ref ) ! Namelist namberg in reference namelist : Iceberg parameters |
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| 410 | READ ( numnam_ref, namberg, IOSTAT = ios, ERR = 901) |
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| 411 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namberg in reference namelist', lwp ) |
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| 412 | REWIND( numnam_cfg ) ! Namelist namberg in configuration namelist : Iceberg parameters |
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| 413 | READ ( numnam_cfg, namberg, IOSTAT = ios, ERR = 902 ) |
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| 414 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namberg in configuration namelist', lwp ) |
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| 415 | IF(lwm) WRITE ( numond, namberg ) |
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| 416 | ! |
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| 417 | IF(lwp) WRITE(numout,*) |
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| 418 | IF( ln_icebergs ) THEN |
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| 419 | IF(lwp) WRITE(numout,*) ' ==>>> icebergs are used' |
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| 420 | ELSE |
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| 421 | IF(lwp) WRITE(numout,*) ' ==>>> No icebergs used' |
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| 422 | RETURN |
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| 423 | ENDIF |
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| 424 | ! |
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| 425 | IF( nn_test_icebergs > nclasses ) THEN |
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| 426 | IF(lwp) WRITE(numout,*) |
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| 427 | IF(lwp) WRITE(numout,*) ' ==>>> Resetting of nn_test_icebergs to ', nclasses |
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| 428 | nn_test_icebergs = nclasses |
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| 429 | ENDIF |
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| 430 | ! |
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| 431 | IF( nn_test_icebergs < 0 .AND. .NOT. ln_use_calving ) THEN |
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| 432 | IF(lwp) WRITE(numout,*) |
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| 433 | IF(lwp) WRITE(numout,*) ' ==>>> Resetting ln_use_calving to .true. since we are not using test icebergs' |
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| 434 | ln_use_calving = .true. |
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| 435 | ENDIF |
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| 436 | ! |
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| 437 | IF(lwp) THEN ! control print |
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| 438 | WRITE(numout,*) |
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| 439 | WRITE(numout,*) 'icb_nam : iceberg initialization through namberg namelist read' |
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| 440 | WRITE(numout,*) '~~~~~~~~ ' |
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| 441 | WRITE(numout,*) ' Calculate budgets ln_bergdia = ', ln_bergdia |
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| 442 | WRITE(numout,*) ' Period between sampling of position for trajectory storage nn_sample_rate = ', nn_sample_rate |
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| 443 | WRITE(numout,*) ' Mass thresholds between iceberg classes (kg) rn_initial_mass =' |
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| 444 | DO jn = 1, nclasses |
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| 445 | WRITE(numout,'(a,f15.2)') ' ', rn_initial_mass(jn) |
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| 446 | ENDDO |
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| 447 | WRITE(numout,*) ' Fraction of calving to apply to this class (non-dim) rn_distribution =' |
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| 448 | DO jn = 1, nclasses |
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| 449 | WRITE(numout,'(a,f10.4)') ' ', rn_distribution(jn) |
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| 450 | END DO |
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| 451 | WRITE(numout,*) ' Ratio between effective and real iceberg mass (non-dim) rn_mass_scaling = ' |
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| 452 | DO jn = 1, nclasses |
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| 453 | WRITE(numout,'(a,f10.2)') ' ', rn_mass_scaling(jn) |
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| 454 | END DO |
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| 455 | WRITE(numout,*) ' Total thickness of newly calved bergs (m) rn_initial_thickness = ' |
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| 456 | DO jn = 1, nclasses |
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| 457 | WRITE(numout,'(a,f10.2)') ' ', rn_initial_thickness(jn) |
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| 458 | END DO |
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| 459 | WRITE(numout,*) ' Timesteps between verbose messages nn_verbose_write = ', nn_verbose_write |
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| 460 | |
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| 461 | WRITE(numout,*) ' Density of icebergs rn_rho_bergs = ', rn_rho_bergs |
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| 462 | WRITE(numout,*) ' Initial ratio L/W for newly calved icebergs rn_LoW_ratio = ', rn_LoW_ratio |
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| 463 | WRITE(numout,*) ' Turn on more verbose output level = ', nn_verbose_level |
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| 464 | WRITE(numout,*) ' Use first order operator splitting for thermodynamics ', & |
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| 465 | & 'use_operator_splitting = ', ln_operator_splitting |
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| 466 | WRITE(numout,*) ' Fraction of erosion melt flux to divert to bergy bits ', & |
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| 467 | & 'bits_erosion_fraction = ', rn_bits_erosion_fraction |
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| 468 | |
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| 469 | WRITE(numout,*) ' Shift of sea-ice concentration in erosion flux modulation ', & |
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| 470 | & '(0<sicn_shift<1) rn_sicn_shift = ', rn_sicn_shift |
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| 471 | WRITE(numout,*) ' Do not add freshwater flux from icebergs to ocean ', & |
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| 472 | & ' passive_mode = ', ln_passive_mode |
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| 473 | WRITE(numout,*) ' Time average the weight on the ocean time_average_weight = ', ln_time_average_weight |
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| 474 | WRITE(numout,*) ' Create icebergs in absence of a restart file nn_test_icebergs = ', nn_test_icebergs |
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| 475 | WRITE(numout,*) ' in lon/lat box = ', rn_test_box |
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| 476 | WRITE(numout,*) ' Use calving data even if nn_test_icebergs > 0 ln_use_calving = ', ln_use_calving |
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| 477 | WRITE(numout,*) ' CFL speed limit for a berg speed_limit = ', rn_speed_limit |
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| 478 | WRITE(numout,*) ' Writing Iceberg status information to icebergs.stat file ' |
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| 479 | ENDIF |
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| 480 | ! |
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| 481 | ! ensure that the sum of berg input distribution is equal to one |
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| 482 | zfact = SUM( rn_distribution ) |
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| 483 | IF( zfact /= 1._wp .AND. 0_wp /= zfact ) THEN |
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| 484 | rn_distribution(:) = rn_distribution(:) / zfact |
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| 485 | IF(lwp) THEN |
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| 486 | WRITE(numout,*) |
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| 487 | WRITE(numout,*) ' ==>>> CAUTION: sum of berg input distribution = ', zfact |
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| 488 | WRITE(numout,*) ' ******* redistribution has been rescaled' |
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| 489 | WRITE(numout,*) ' updated berg distribution is :' |
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| 490 | DO jn = 1, nclasses |
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| 491 | WRITE(numout,'(a,f10.4)') ' ',rn_distribution(jn) |
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| 492 | END DO |
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| 493 | ENDIF |
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| 494 | ENDIF |
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| 495 | IF( MINVAL( rn_distribution(:) ) < 0._wp ) THEN |
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| 496 | CALL ctl_stop( 'icb_nam: a negative rn_distribution value encountered ==>> change your namelist namberg' ) |
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| 497 | ENDIF |
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| 498 | ! |
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| 499 | END SUBROUTINE icb_nam |
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| 500 | |
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| 501 | !!====================================================================== |
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| 502 | END MODULE icbini |
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