| 1 | MODULE iceini |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE iceini *** |
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| 4 | !! Sea-ice model : LIM Sea ice model Initialization |
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| 5 | !!====================================================================== |
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| 6 | #if defined key_lim3 |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! 'key_lim3' : LIM sea-ice model |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! ice_init : sea-ice model initialization |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | USE dom_oce |
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| 13 | USE in_out_manager |
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| 14 | USE ice_oce ! ice variables |
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| 15 | USE sbc_oce ! Surface boundary condition: ocean fields |
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| 16 | USE sbc_ice ! Surface boundary condition: ice fields |
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| 17 | USE phycst ! Define parameters for the routines |
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| 18 | USE ocfzpt |
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| 19 | USE ice |
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| 20 | USE limmsh |
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| 21 | USE limistate |
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| 22 | USE limrst |
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| 23 | USE par_ice |
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| 24 | USE limvar |
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| 25 | |
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| 26 | IMPLICIT NONE |
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| 27 | PRIVATE |
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| 28 | |
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| 29 | !! * Routine accessibility |
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| 30 | PUBLIC ice_init ! called by opa.F90 |
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| 31 | PUBLIC lim_itd_ini |
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| 32 | |
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| 33 | !! * Share Module variables |
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| 34 | LOGICAL , PUBLIC :: & !!! ** init namelist (namicerun) ** |
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| 35 | ln_limdyn = .TRUE., & !: flag for ice dynamics (T) or not (F) |
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| 36 | ln_nicep = .TRUE. !: flag for sea-ice points output (T) or not (F) |
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| 37 | INTEGER , PUBLIC :: & !: |
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| 38 | nstart , & !: iteration number of the begining of the run |
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| 39 | nlast , & !: iteration number of the end of the run |
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| 40 | nitrun , & !: number of iteration |
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| 41 | numit !: iteration number |
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| 42 | REAL(wp), PUBLIC :: & !: |
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| 43 | hsndif = 0.e0 , & !: computation of temp. in snow (0) or not (9999) |
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| 44 | hicdif = 0.e0 , & !: computation of temp. in ice (0) or not (9999) |
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| 45 | tpstot , & !: time of the run in seconds |
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| 46 | cai = 1.40e-3 , & !: atmospheric drag over sea ice |
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| 47 | cao = 1.00e-3 !: atmospheric drag over ocean |
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| 48 | REAL(wp), PUBLIC, DIMENSION(2) :: & !: |
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| 49 | acrit = (/ 1.e-06 , 1.e-06 /) !: minimum fraction for leads in |
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| 50 | ! ! north and south hemisphere |
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| 51 | !!---------------------------------------------------------------------- |
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| 52 | !! LIM 3.0, UCL-ASTR-LOCEAN-IPSL (2008) |
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| 53 | !! $ Id: $ |
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| 54 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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| 55 | !!---------------------------------------------------------------------- |
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| 56 | |
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| 57 | CONTAINS |
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| 58 | |
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| 59 | SUBROUTINE ice_init |
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| 60 | !!---------------------------------------------------------------------- |
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| 61 | !! *** ROUTINE ice_init *** |
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| 62 | !! |
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| 63 | !! ** purpose : |
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| 64 | !! |
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| 65 | !! History : |
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| 66 | !! 2.0 ! 02-08 (G. Madec) F90: Free form and modules |
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| 67 | !! 3.0 ! 08-03 (M. Vancop) ITD, salinity, EVP-C |
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| 68 | !!---------------------------------------------------------------------- |
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| 69 | |
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| 70 | ! Open the namelist file |
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| 71 | CALL ctlopn(numnam_ice,'namelist_ice','OLD', 'FORMATTED', 'SEQUENTIAL', 1,numout,.FALSE.,1) |
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| 72 | |
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| 73 | CALL ice_run ! read in namelist some run parameters |
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| 74 | |
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| 75 | ! Louvain la Neuve Ice model |
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| 76 | IF( nacc == 1 ) THEN |
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| 77 | dtsd2 = nn_fsbc * rdtmin * 0.5 |
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| 78 | rdt_ice = nn_fsbc * rdtmin |
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| 79 | ELSE |
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| 80 | dtsd2 = nn_fsbc * rdt * 0.5 |
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| 81 | rdt_ice = nn_fsbc * rdt |
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| 82 | ENDIF |
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| 83 | |
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| 84 | CALL lim_msh ! ice mesh initialization |
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| 85 | |
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| 86 | CALL lim_itd_ini ! initialize the ice thickness |
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| 87 | ! distribution |
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| 88 | ! Initial sea-ice state |
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| 89 | IF( .NOT.ln_rstart ) THEN |
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| 90 | numit = 0 |
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| 91 | numit = nit000 - 1 |
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| 92 | CALL lim_istate ! start from rest: sea-ice deduced from sst |
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| 93 | CALL lim_var_agg(1) ! aggregate category variables in |
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| 94 | ! bulk variables |
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| 95 | CALL lim_var_glo2eqv ! convert global variables in equivalent |
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| 96 | ! variables |
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| 97 | ELSE |
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| 98 | CALL lim_rst_read ! start from a restart file |
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| 99 | |
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| 100 | numit = nit000 - 1 |
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| 101 | CALL lim_var_agg(1) ! aggregate ice variables |
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| 102 | CALL lim_var_glo2eqv ! convert global var in equivalent variables |
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| 103 | ENDIF |
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| 104 | |
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| 105 | freeze(:,:) = at_i(:,:) ! initialisation of sea/ice cover |
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| 106 | # if defined key_coupled |
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| 107 | Must be adpated to LIM3 |
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| 108 | alb_ice(:,:,:) = albege(:,:) ! sea-ice albedo |
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| 109 | # endif |
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| 110 | |
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| 111 | nstart = numit + nn_fsbc |
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| 112 | nitrun = nitend - nit000 + 1 |
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| 113 | nlast = numit + nitrun |
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| 114 | |
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| 115 | IF( nstock == 0 ) nstock = nlast + 1 |
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| 116 | |
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| 117 | END SUBROUTINE ice_init |
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| 118 | |
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| 119 | SUBROUTINE ice_run |
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| 120 | !!------------------------------------------------------------------- |
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| 121 | !! *** ROUTINE ice_run *** |
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| 122 | !! |
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| 123 | !! ** Purpose : Definition some run parameter for ice model |
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| 124 | !! |
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| 125 | !! ** Method : Read the namicerun namelist and check the parameter |
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| 126 | !! values called at the first timestep (nit000) |
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| 127 | !! |
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| 128 | !! ** input : Namelist namicerun |
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| 129 | !! |
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| 130 | !! history : |
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| 131 | !! 2.0 ! 03-08 (C. Ethe) Original code |
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| 132 | !! 3.0 ! 08-03 (M. Vancop) LIM3 |
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| 133 | !!------------------------------------------------------------------- |
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| 134 | NAMELIST/namicerun/ ln_limdyn, acrit, hsndif, hicdif, cai, cao, ln_nicep |
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| 135 | !!------------------------------------------------------------------- |
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| 136 | |
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| 137 | ! ! Read Namelist namicerun |
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| 138 | REWIND ( numnam_ice ) |
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| 139 | READ ( numnam_ice , namicerun ) |
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| 140 | IF(lwp) THEN |
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| 141 | WRITE(numout,*) |
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| 142 | WRITE(numout,*) 'ice_run : ice share parameters for dynamics/advection/thermo of sea-ice' |
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| 143 | WRITE(numout,*) ' ~~~~~~' |
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| 144 | WRITE(numout,*) ' switch for ice dynamics (1) or not (0) ln_limdyn = ', ln_limdyn |
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| 145 | WRITE(numout,*) ' minimum fraction for leads in the NH (SH) acrit(1/2) = ', acrit(:) |
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| 146 | WRITE(numout,*) ' computation of temp. in snow (=0) or not (=9999) hsndif = ', hsndif |
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| 147 | WRITE(numout,*) ' computation of temp. in ice (=0) or not (=9999) hicdif = ', hicdif |
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| 148 | WRITE(numout,*) ' atmospheric drag over sea ice = ', cai |
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| 149 | WRITE(numout,*) ' atmospheric drag over ocean = ', cao |
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| 150 | WRITE(numout,*) ' Several ice points in the ice or not in ocean.output = ', ln_nicep |
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| 151 | ENDIF |
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| 152 | |
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| 153 | END SUBROUTINE ice_run |
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| 154 | |
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| 155 | SUBROUTINE lim_itd_ini |
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| 156 | !!------------------------------------------------------------------ |
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| 157 | !! *** ROUTINE lim_itd_ini *** |
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| 158 | !! ** Purpose : |
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| 159 | !! Initializes the ice thickness distribution |
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| 160 | !! ** Method : |
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| 161 | !! Very simple. Currently there are no ice types in the |
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| 162 | !! model... |
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| 163 | !! |
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| 164 | !! ** Arguments : |
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| 165 | !! kideb , kiut : Starting and ending points on which the |
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| 166 | !! the computation is applied |
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| 167 | !! |
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| 168 | !! ** Inputs / Ouputs : (global commons) |
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| 169 | !! |
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| 170 | !! ** External : |
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| 171 | !! |
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| 172 | !! ** References : |
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| 173 | !! |
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| 174 | !! ** History : |
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| 175 | !! (12-2005) Martin Vancoppenolle |
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| 176 | !! |
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| 177 | !!------------------------------------------------------------------ |
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| 178 | !! * Arguments |
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| 179 | |
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| 180 | !! * Local variables |
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| 181 | INTEGER :: jl, & ! ice category dummy loop index |
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| 182 | jm ! ice types dummy loop index |
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| 183 | |
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| 184 | REAL(wp) :: & ! constant values |
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| 185 | zeps = 1.0e-10, & ! |
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| 186 | zc1 , & ! |
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| 187 | zc2 , & ! |
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| 188 | zc3 , & ! |
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| 189 | zx1 |
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| 190 | |
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| 191 | WRITE(numout,*) 'lim_itd_ini : Initialization of ice thickness distribution ' |
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| 192 | WRITE(numout,*) '~~~~~~~~~~~~' |
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| 193 | |
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| 194 | !!-- End of declarations |
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| 195 | !!------------------------------------------------------------------------------ |
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| 196 | |
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| 197 | !------------------------------------------------------------------------------! |
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| 198 | ! 1) Ice thickness distribution parameters initialization |
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| 199 | !------------------------------------------------------------------------------! |
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| 200 | |
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| 201 | !- Types boundaries (integer) |
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| 202 | !---------------------------- |
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| 203 | ice_cat_bounds(1,1) = 1 |
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| 204 | ice_cat_bounds(1,2) = jpl |
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| 205 | |
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| 206 | !- Number of ice thickness categories in each ice type |
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| 207 | DO jm = 1, jpm |
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| 208 | ice_ncat_types(jm) = ice_cat_bounds(jm,2) - ice_cat_bounds(jm,1) + 1 |
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| 209 | END DO |
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| 210 | |
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| 211 | !- Make the correspondence between thickness categories and ice types |
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| 212 | !--------------------------------------------------------------------- |
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| 213 | DO jm = 1, jpm !over types |
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| 214 | DO jl = ice_cat_bounds(jm,1), ice_cat_bounds(jm,2) !over thickness categories |
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| 215 | ice_types(jl) = jm |
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| 216 | END DO |
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| 217 | END DO |
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| 218 | |
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| 219 | WRITE(numout,*) ' Number of ice types jpm = ', jpm |
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| 220 | WRITE(numout,*) ' Number of ice categories jpl = ', jpl |
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| 221 | DO jm = 1, jpm |
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| 222 | WRITE(numout,*) ' Ice type ', jm |
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| 223 | WRITE(numout,*) ' Number of thickness categories ', ice_ncat_types(jm) |
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| 224 | WRITE(numout,*) ' Thickness category boundaries ', ice_cat_bounds(jm,1:2) |
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| 225 | END DO |
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| 226 | WRITE(numout,*) 'Ice type vector', ice_types(1:jpl) |
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| 227 | WRITE(numout,*) |
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| 228 | |
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| 229 | !- Thickness categories boundaries |
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| 230 | !---------------------------------- |
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| 231 | hi_max(:) = 0.0 |
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| 232 | hi_max_typ(:,:) = 0.0 |
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| 233 | |
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| 234 | !- Type 1 - undeformed ice |
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| 235 | zc1 = 3./REAL(ice_cat_bounds(1,2)-ice_cat_bounds(1,1)+1) |
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| 236 | zc2 = 10.0*zc1 |
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| 237 | zc3 = 3.0 |
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| 238 | |
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| 239 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) |
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| 240 | zx1 = REAL(jl-1) / REAL(ice_cat_bounds(1,2)-ice_cat_bounds(1,1)+1) |
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| 241 | hi_max(jl) = hi_max(jl-1) + zc1 + zc2 * (1.0 + TANH ( zc3 * (zx1 - 1.0 ) ) ) |
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| 242 | END DO |
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| 243 | |
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| 244 | !- Fill in the hi_max_typ vector, useful in other circumstances |
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| 245 | ! Tricky trick |
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| 246 | ! hi_max_typ is actually not used in the code and will be removed in a |
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| 247 | ! next flyspray at this time, the tricky trick will also be removed |
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| 248 | ! Martin, march 08 |
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| 249 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) |
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| 250 | hi_max_typ(jl,1) = hi_max(jl) |
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| 251 | END DO |
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| 252 | |
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| 253 | WRITE(numout,*) ' Thickness category boundaries independently of ice type ' |
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| 254 | WRITE(numout,*) ' hi_max ', hi_max(0:jpl) |
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| 255 | |
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| 256 | WRITE(numout,*) ' Thickness category boundaries inside ice types ' |
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| 257 | DO jm = 1, jpm |
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| 258 | WRITE(numout,*) ' Type number ', jm |
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| 259 | WRITE(numout,*) ' hi_max_typ : ', hi_max_typ(0:ice_ncat_types(jm),jm) |
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| 260 | END DO |
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| 261 | |
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| 262 | DO jl = 1, jpl |
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| 263 | hi_mean(jl) = ( hi_max(jl) + hi_max(jl-1) ) / 2.0 |
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| 264 | END DO |
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| 265 | |
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| 266 | tn_ice(:,:,:) = t_su(:,:,:) |
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| 267 | |
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| 268 | END SUBROUTINE lim_itd_ini |
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| 269 | |
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| 270 | #else |
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| 271 | !!---------------------------------------------------------------------- |
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| 272 | !! Default option : Empty module NO LIM sea-ice model |
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| 273 | !!---------------------------------------------------------------------- |
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| 274 | CONTAINS |
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| 275 | SUBROUTINE ice_init ! Empty routine |
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| 276 | END SUBROUTINE ice_init |
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| 277 | |
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| 278 | SUBROUTINE lim_itd_ini |
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| 279 | END SUBROUTINE lim_itd_ini |
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| 280 | #endif |
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| 281 | |
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| 282 | !!====================================================================== |
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| 283 | END MODULE iceini |
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