| 1 | MODULE limistate |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE limistate *** |
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| 4 | !! Initialisation of diagnostics ice variables |
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| 5 | !!====================================================================== |
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| 6 | !! History : 2.0 ! 2004-01 (C. Ethe, G. Madec) Original code |
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| 7 | !! 3.0 ! 2011-02 (G. Madec) dynamical allocation |
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| 8 | !! - ! 2014 (C. Rousset) add N/S initializations |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | #if defined key_lim3 |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | !! 'key_lim3' : LIM3 sea-ice model |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! lim_istate : Initialisation of diagnostics ice variables |
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| 15 | !! lim_istate_init : initialization of ice state and namelist read |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | USE phycst ! physical constant |
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| 18 | USE oce ! dynamics and tracers variables |
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| 19 | USE dom_oce ! ocean domain |
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| 20 | USE sbc_oce ! Surface boundary condition: ocean fields |
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| 21 | USE sbc_ice ! Surface boundary condition: ice fields |
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| 22 | USE eosbn2 ! equation of state |
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| 23 | USE ice ! sea-ice variables |
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| 24 | USE par_oce ! ocean parameters |
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| 25 | USE limvar ! lim_var_salprof |
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| 26 | ! |
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| 27 | USE in_out_manager ! I/O manager |
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| 28 | USE lib_mpp ! MPP library |
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| 29 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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| 30 | USE wrk_nemo ! work arrays |
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| 31 | USE fldread ! read input fields |
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| 32 | USE iom |
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| 33 | |
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| 34 | IMPLICIT NONE |
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| 35 | PRIVATE |
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| 36 | |
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| 37 | PUBLIC lim_istate ! routine called by lim_init.F90 |
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| 38 | |
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| 39 | INTEGER , PARAMETER :: jpfldi = 6 ! maximum number of files to read |
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| 40 | INTEGER , PARAMETER :: jp_hti = 1 ! index of ice thickness (m) at T-point |
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| 41 | INTEGER , PARAMETER :: jp_hts = 2 ! index of snow thicknes (m) at T-point |
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| 42 | INTEGER , PARAMETER :: jp_ati = 3 ! index of ice fraction (%) at T-point |
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| 43 | INTEGER , PARAMETER :: jp_tsu = 4 ! index of ice surface temp (K) at T-point |
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| 44 | INTEGER , PARAMETER :: jp_tmi = 5 ! index of ice temp at T-point |
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| 45 | INTEGER , PARAMETER :: jp_smi = 6 ! index of ice sali at T-point |
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| 46 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: si ! structure of input fields (file informations, fields read) |
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| 47 | !!---------------------------------------------------------------------- |
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| 48 | !! LIM 3.0, UCL-LOCEAN-IPSL (2008) |
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| 49 | !! $Id$ |
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| 50 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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| 51 | !!---------------------------------------------------------------------- |
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| 52 | CONTAINS |
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| 53 | |
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| 54 | SUBROUTINE lim_istate |
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| 55 | !!------------------------------------------------------------------- |
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| 56 | !! *** ROUTINE lim_istate *** |
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| 57 | !! |
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| 58 | !! ** Purpose : defined the sea-ice initial state |
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| 59 | !! |
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| 60 | !! ** Method : This routine will put some ice where ocean |
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| 61 | !! is at the freezing point, then fill in ice |
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| 62 | !! state variables using prescribed initial |
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| 63 | !! values in the namelist |
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| 64 | !! |
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| 65 | !! ** Steps : 1) Read namelist |
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| 66 | !! 2) Basal temperature; ice and hemisphere masks |
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| 67 | !! 3) Fill in the ice thickness distribution using gaussian |
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| 68 | !! 4) Fill in space-dependent arrays for state variables |
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| 69 | !! 5) Diagnostic arrays |
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| 70 | !! 6) Lateral boundary conditions |
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| 71 | !! |
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| 72 | !! ** Notes : o_i, t_su, t_s, t_i, s_i must be filled everywhere, even |
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| 73 | !! where there is no ice (clem: I do not know why, is it mandatory?) |
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| 74 | !! |
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| 75 | !! History : |
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| 76 | !! 2.0 ! 01-04 (C. Ethe, G. Madec) Original code |
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| 77 | !! 3.0 ! 2007 (M. Vancoppenolle) Rewrite for ice cats |
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| 78 | !! 4.0 ! 09-11 (M. Vancoppenolle) Enhanced version for ice cats |
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| 79 | !!-------------------------------------------------------------------- |
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| 80 | INTEGER :: ji, jj, jk, jl ! dummy loop indices |
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| 81 | REAL(wp) :: ztmelts, zdh |
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| 82 | INTEGER :: i_hemis, i_fill, jl0 |
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| 83 | REAL(wp) :: zarg, zV, zconv, zdv |
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| 84 | REAL(wp), POINTER, DIMENSION(:,:) :: zswitch ! ice indicator |
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| 85 | REAL(wp), POINTER, DIMENSION(:,:) :: zht_i_ini, zat_i_ini, zvt_i_ini !data from namelist or nc file |
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| 86 | REAL(wp), POINTER, DIMENSION(:,:) :: zts_u_ini, zht_s_ini, zsm_i_ini, ztm_i_ini !data from namelist or nc file |
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| 87 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zh_i_ini, za_i_ini !data by cattegories to fill |
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| 88 | INTEGER , DIMENSION(4) :: itest |
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| 89 | !-------------------------------------------------------------------- |
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| 90 | |
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| 91 | CALL wrk_alloc( jpi, jpj, jpl, zh_i_ini, za_i_ini ) |
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| 92 | CALL wrk_alloc( jpi, jpj, zht_i_ini, zat_i_ini, zvt_i_ini, zts_u_ini, zht_s_ini, zsm_i_ini, ztm_i_ini ) |
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| 93 | CALL wrk_alloc( jpi, jpj, zswitch ) |
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| 94 | |
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| 95 | IF(lwp) WRITE(numout,*) |
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| 96 | IF(lwp) WRITE(numout,*) 'lim_istate : sea-ice initialization ' |
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| 97 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~ ' |
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| 98 | |
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| 99 | !-------------------------------------------------------------------- |
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| 100 | ! 1) Read namelist |
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| 101 | !-------------------------------------------------------------------- |
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| 102 | ! |
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| 103 | CALL lim_istate_init |
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| 104 | |
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| 105 | ! init surface temperature |
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| 106 | DO jl = 1, jpl |
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| 107 | !$OMP PARALLEL DO schedule(static) private(jj,ji) |
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| 108 | DO jj = 1, jpj |
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| 109 | DO ji = 1, jpi |
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| 110 | t_su (ji,jj,jl) = rt0 * tmask(ji,jj,1) |
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| 111 | tn_ice(ji,jj,jl) = rt0 * tmask(ji,jj,1) |
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| 112 | END DO |
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| 113 | END DO |
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| 114 | END DO |
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| 115 | |
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| 116 | ! init basal temperature (considered at freezing point) |
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| 117 | CALL eos_fzp( sss_m(:,:), t_bo(:,:) ) |
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| 118 | !$OMP PARALLEL DO schedule(static) private(jj,ji) |
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| 119 | DO jj = 1, jpj |
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| 120 | DO ji = 1, jpi |
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| 121 | t_bo(ji,jj) = ( t_bo(ji,jj) + rt0 ) * tmask(ji,jj,1) |
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| 122 | END DO |
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| 123 | END DO |
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| 124 | |
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| 125 | |
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| 126 | !-------------------------------------------------------------------- |
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| 127 | ! 2) Initialization of sea ice state variables |
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| 128 | !-------------------------------------------------------------------- |
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| 129 | IF( ln_limini ) THEN |
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| 130 | ! |
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| 131 | IF( ln_limini_file )THEN |
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| 132 | ! |
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| 133 | !$OMP PARALLEL DO schedule(static) private(jj,ji) |
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| 134 | DO jj = 1, jpj |
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| 135 | DO ji = 1, jpi |
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| 136 | zht_i_ini(ji,jj) = si(jp_hti)%fnow(ji,jj,1) |
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| 137 | zht_s_ini(ji,jj) = si(jp_hts)%fnow(ji,jj,1) |
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| 138 | zat_i_ini(ji,jj) = si(jp_ati)%fnow(ji,jj,1) |
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| 139 | zts_u_ini(ji,jj) = si(jp_tsu)%fnow(ji,jj,1) |
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| 140 | ztm_i_ini(ji,jj) = si(jp_tmi)%fnow(ji,jj,1) |
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| 141 | zsm_i_ini(ji,jj) = si(jp_smi)%fnow(ji,jj,1) |
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| 142 | ! |
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| 143 | IF ( zat_i_ini(ji,jj) > 0._wp ) THEN ; zswitch(ji,jj) = tmask(ji,jj,1) |
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| 144 | ELSE ; zswitch(ji,jj) = 0._wp |
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| 145 | END IF |
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| 146 | END DO |
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| 147 | END DO |
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| 148 | ! |
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| 149 | ELSE ! ln_limini_file = F |
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| 150 | |
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| 151 | !-------------------------------------------------------------------- |
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| 152 | ! 3) Basal temperature, ice mask |
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| 153 | !-------------------------------------------------------------------- |
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| 154 | ! no ice if sst <= t-freez + ttest |
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| 155 | !$OMP PARALLEL |
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| 156 | !$OMP DO schedule(static) private(jj,ji) |
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| 157 | DO jj = 1, jpj |
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| 158 | DO ji = 1, jpi |
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| 159 | IF ( ( sst_m(ji,jj) - (t_bo(ji,jj) - rt0) ) * tmask(ji,jj,1) >= rn_thres_sst ) THEN |
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| 160 | zswitch(ji,jj) = 0._wp |
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| 161 | ELSE |
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| 162 | zswitch(ji,jj) = tmask(ji,jj,1) |
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| 163 | END IF |
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| 164 | END DO |
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| 165 | END DO |
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| 166 | |
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| 167 | !----------------------------- |
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| 168 | ! 3.1) Hemisphere-dependent arrays |
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| 169 | !----------------------------- |
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| 170 | ! assign initial thickness, concentration, snow depth and salinity to an hemisphere-dependent array |
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| 171 | !$OMP DO schedule(static) private(jj,ji) |
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| 172 | DO jj = 1, jpj |
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| 173 | DO ji = 1, jpi |
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| 174 | IF( ff_t(ji,jj) >= 0._wp ) THEN |
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| 175 | zht_i_ini(ji,jj) = rn_hti_ini_n * zswitch(ji,jj) |
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| 176 | zht_s_ini(ji,jj) = rn_hts_ini_n * zswitch(ji,jj) |
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| 177 | zat_i_ini(ji,jj) = rn_ati_ini_n * zswitch(ji,jj) |
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| 178 | zts_u_ini(ji,jj) = rn_tmi_ini_n * zswitch(ji,jj) |
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| 179 | zsm_i_ini(ji,jj) = rn_smi_ini_n * zswitch(ji,jj) |
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| 180 | ztm_i_ini(ji,jj) = rn_tmi_ini_n * zswitch(ji,jj) |
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| 181 | ELSE |
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| 182 | zht_i_ini(ji,jj) = rn_hti_ini_s * zswitch(ji,jj) |
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| 183 | zht_s_ini(ji,jj) = rn_hts_ini_s * zswitch(ji,jj) |
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| 184 | zat_i_ini(ji,jj) = rn_ati_ini_s * zswitch(ji,jj) |
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| 185 | zts_u_ini(ji,jj) = rn_tmi_ini_s * zswitch(ji,jj) |
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| 186 | zsm_i_ini(ji,jj) = rn_smi_ini_s * zswitch(ji,jj) |
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| 187 | ztm_i_ini(ji,jj) = rn_tmi_ini_s * zswitch(ji,jj) |
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| 188 | ENDIF |
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| 189 | END DO |
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| 190 | END DO |
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| 191 | !$OMP END PARALLEL |
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| 192 | ! |
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| 193 | ENDIF ! ln_limini_file |
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| 194 | |
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| 195 | !$OMP PARALLEL |
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| 196 | !$OMP DO schedule(static) private(jj,ji) |
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| 197 | DO jj = 1, jpj |
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| 198 | DO ji = 1, jpi |
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| 199 | zvt_i_ini(ji,jj) = zht_i_ini(ji,jj) * zat_i_ini(ji,jj) ! ice volume |
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| 200 | END DO |
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| 201 | END DO |
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| 202 | !--------------------------------------------------------------------- |
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| 203 | ! 3.2) Distribute ice concentration and thickness into the categories |
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| 204 | !--------------------------------------------------------------------- |
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| 205 | ! a gaussian distribution for ice concentration is used |
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| 206 | ! then we check whether the distribution fullfills |
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| 207 | ! volume and area conservation, positivity and ice categories bounds |
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| 208 | DO jl = 1, jpl |
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| 209 | !$OMP DO schedule(static) private(jj,ji) |
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| 210 | DO jj = 1, jpj |
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| 211 | DO ji = 1, jpi |
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| 212 | zh_i_ini(ji,jj,jl) = 0._wp |
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| 213 | za_i_ini(ji,jj,jl) = 0._wp |
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| 214 | END DO |
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| 215 | END DO |
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| 216 | END DO |
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| 217 | ! |
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| 218 | !$OMP DO schedule(static) private(jj,ji,jl0,jl,i_fill,zarg,zV,zdv,zconv,itest) |
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| 219 | DO jj = 1, jpj |
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| 220 | DO ji = 1, jpi |
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| 221 | ! |
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| 222 | IF( zat_i_ini(ji,jj) > 0._wp .AND. zht_i_ini(ji,jj) > 0._wp )THEN |
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| 223 | |
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| 224 | !--- jl0: most likely index where cc will be maximum |
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| 225 | jl0 = jpl |
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| 226 | DO jl = 1, jpl |
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| 227 | IF ( ( zht_i_ini(ji,jj) > hi_max(jl-1) ) .AND. ( zht_i_ini(ji,jj) <= hi_max(jl) ) ) THEN |
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| 228 | jl0 = jl |
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| 229 | CYCLE |
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| 230 | ENDIF |
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| 231 | END DO |
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| 232 | ! |
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| 233 | ! initialisation of tests |
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| 234 | itest(:) = 0 |
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| 235 | |
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| 236 | i_fill = jpl + 1 !==================================== |
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| 237 | DO WHILE ( ( SUM( itest(:) ) /= 4 ) .AND. ( i_fill >= 2 ) ) ! iterative loop on i_fill categories |
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| 238 | ! iteration !==================================== |
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| 239 | i_fill = i_fill - 1 |
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| 240 | |
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| 241 | ! initialisation of ice variables for each try |
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| 242 | zh_i_ini(ji,jj,:) = 0._wp |
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| 243 | za_i_ini(ji,jj,:) = 0._wp |
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| 244 | itest(:) = 0 |
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| 245 | ! |
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| 246 | ! *** case very thin ice: fill only category 1 |
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| 247 | IF ( i_fill == 1 ) THEN |
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| 248 | zh_i_ini(ji,jj,1) = zht_i_ini(ji,jj) |
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| 249 | za_i_ini(ji,jj,1) = zat_i_ini(ji,jj) |
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| 250 | |
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| 251 | ! *** case ice is thicker: fill categories >1 |
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| 252 | ELSE |
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| 253 | |
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| 254 | ! Fill ice thicknesses in the (i_fill-1) cat by hmean |
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| 255 | DO jl = 1, i_fill-1 |
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| 256 | zh_i_ini(ji,jj,jl) = hi_mean(jl) |
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| 257 | END DO |
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| 258 | ! |
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| 259 | !--- Concentrations |
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| 260 | za_i_ini(ji,jj,jl0) = zat_i_ini(ji,jj) / SQRT(REAL(jpl)) |
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| 261 | DO jl = 1, i_fill - 1 |
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| 262 | IF( jl /= jl0 )THEN |
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| 263 | zarg = ( zh_i_ini(ji,jj,jl) - zht_i_ini(ji,jj) ) / ( 0.5_wp * zht_i_ini(ji,jj) ) |
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| 264 | za_i_ini(ji,jj,jl) = za_i_ini(ji,jj,jl0) * EXP(-zarg**2) |
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| 265 | ENDIF |
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| 266 | END DO |
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| 267 | ! |
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| 268 | ! Concentration in the last (i_fill) category |
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| 269 | za_i_ini(ji,jj,i_fill) = zat_i_ini(ji,jj) - SUM( za_i_ini(ji,jj,1:i_fill-1) ) |
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| 270 | |
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| 271 | ! Ice thickness in the last (i_fill) category |
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| 272 | zV = SUM( za_i_ini(ji,jj,1:i_fill-1) * zh_i_ini(ji,jj,1:i_fill-1) ) |
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| 273 | zh_i_ini(ji,jj,i_fill) = ( zvt_i_ini(ji,jj) - zV ) / MAX( za_i_ini(ji,jj,i_fill), epsi10 ) |
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| 274 | |
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| 275 | ! clem: correction if concentration of upper cat is greater than lower cat |
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| 276 | ! (it should be a gaussian around jl0 but sometimes it is not) |
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| 277 | IF ( jl0 /= jpl ) THEN |
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| 278 | DO jl = jpl, jl0+1, -1 |
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| 279 | IF ( za_i_ini(ji,jj,jl) > za_i_ini(ji,jj,jl-1) ) THEN |
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| 280 | zdv = zh_i_ini(ji,jj,jl) * za_i_ini(ji,jj,jl) |
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| 281 | zh_i_ini(ji,jj,jl ) = 0._wp |
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| 282 | za_i_ini(ji,jj,jl ) = 0._wp |
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| 283 | za_i_ini(ji,jj,1:jl-1) = za_i_ini(ji,jj,1:jl-1) & |
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| 284 | & + zdv / MAX( REAL(jl-1) * zht_i_ini(ji,jj), epsi10 ) |
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| 285 | END IF |
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| 286 | ENDDO |
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| 287 | ENDIF |
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| 288 | ! |
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| 289 | ENDIF ! case ice is thick or thin |
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| 290 | |
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| 291 | !--------------------- |
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| 292 | ! Compatibility tests |
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| 293 | !--------------------- |
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| 294 | ! Test 1: area conservation |
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| 295 | zconv = ABS( zat_i_ini(ji,jj) - SUM( za_i_ini(ji,jj,1:jpl) ) ) |
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| 296 | IF ( zconv < epsi06 ) itest(1) = 1 |
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| 297 | |
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| 298 | ! Test 2: volume conservation |
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| 299 | zconv = ABS( zat_i_ini(ji,jj) * zht_i_ini(ji,jj) & |
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| 300 | & - SUM( za_i_ini (ji,jj,1:jpl) * zh_i_ini (ji,jj,1:jpl) ) ) |
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| 301 | IF ( zconv < epsi06 ) itest(2) = 1 |
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| 302 | |
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| 303 | ! Test 3: thickness of the last category is in-bounds ? |
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| 304 | IF ( zh_i_ini(ji,jj,i_fill) >= hi_max(i_fill-1) ) itest(3) = 1 |
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| 305 | |
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| 306 | ! Test 4: positivity of ice concentrations |
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| 307 | itest(4) = 1 |
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| 308 | DO jl = 1, i_fill |
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| 309 | IF ( za_i_ini(ji,jj,jl) < 0._wp ) itest(4) = 0 |
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| 310 | END DO |
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| 311 | ! !============================ |
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| 312 | END DO ! end iteration on categories |
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| 313 | ! !============================ |
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| 314 | ! |
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| 315 | IF( lwp .AND. SUM(itest) /= 4 ) THEN |
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| 316 | WRITE(numout,*) |
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| 317 | WRITE(numout,*) ' !!!! ALERT itest is not equal to 4 !!! ' |
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| 318 | WRITE(numout,*) ' !!!! Something is wrong in the LIM3 initialization procedure ' |
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| 319 | WRITE(numout,*) |
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| 320 | WRITE(numout,*) ' *** itest_i (i=1,4) = ', itest(:) |
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| 321 | WRITE(numout,*) ' zat_i_ini : ', zat_i_ini(ji,jj) |
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| 322 | WRITE(numout,*) ' zht_i_ini : ', zht_i_ini(ji,jj) |
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| 323 | ENDIF |
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| 324 | |
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| 325 | ENDIF ! zat_i_ini(ji,jj) > 0._wp .AND. zht_i_ini(ji,jj) > 0._wp |
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| 326 | ! |
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| 327 | END DO |
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| 328 | END DO |
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| 329 | !$OMP END PARALLEL |
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| 330 | |
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| 331 | !--------------------------------------------------------------------- |
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| 332 | ! 3.3) Space-dependent arrays for ice state variables |
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| 333 | !--------------------------------------------------------------------- |
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| 334 | |
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| 335 | ! Ice concentration, thickness and volume, ice salinity, ice age, surface temperature |
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| 336 | DO jl = 1, jpl ! loop over categories |
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| 337 | !$OMP PARALLEL DO schedule(static) private(jj,ji) |
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| 338 | DO jj = 1, jpj |
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| 339 | DO ji = 1, jpi |
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| 340 | a_i(ji,jj,jl) = zswitch(ji,jj) * za_i_ini(ji,jj,jl) ! concentration |
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| 341 | ht_i(ji,jj,jl) = zswitch(ji,jj) * zh_i_ini(ji,jj,jl) ! ice thickness |
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| 342 | sm_i(ji,jj,jl) = zswitch(ji,jj) * zsm_i_ini(ji,jj) ! salinity |
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| 343 | o_i(ji,jj,jl) = zswitch(ji,jj) * 1._wp ! age (1 day) |
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| 344 | t_su(ji,jj,jl) = zswitch(ji,jj) * zts_u_ini(ji,jj) + ( 1._wp - zswitch(ji,jj) ) * rt0 ! surf temp |
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| 345 | |
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| 346 | IF( zht_i_ini(ji,jj) > 0._wp )THEN |
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| 347 | ht_s(ji,jj,jl)= ht_i(ji,jj,jl) * ( zht_s_ini(ji,jj) / zht_i_ini(ji,jj) ) ! snow depth |
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| 348 | ELSE |
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| 349 | ht_s(ji,jj,jl)= 0._wp |
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| 350 | ENDIF |
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| 351 | |
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| 352 | ! This case below should not be used if (ht_s/ht_i) is ok in namelist |
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| 353 | ! In case snow load is in excess that would lead to transformation from snow to ice |
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| 354 | ! Then, transfer the snow excess into the ice (different from limthd_dh) |
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| 355 | zdh = MAX( 0._wp, ( rhosn * ht_s(ji,jj,jl) + ( rhoic - rau0 ) * ht_i(ji,jj,jl) ) * r1_rau0 ) |
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| 356 | ! recompute ht_i, ht_s avoiding out of bounds values |
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| 357 | ht_i(ji,jj,jl) = MIN( hi_max(jl), ht_i(ji,jj,jl) + zdh ) |
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| 358 | ht_s(ji,jj,jl) = MAX( 0._wp, ht_s(ji,jj,jl) - zdh * rhoic * r1_rhosn ) |
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| 359 | |
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| 360 | ! ice volume, salt content, age content |
|---|
| 361 | v_i(ji,jj,jl) = ht_i(ji,jj,jl) * a_i(ji,jj,jl) ! ice volume |
|---|
| 362 | v_s(ji,jj,jl) = ht_s(ji,jj,jl) * a_i(ji,jj,jl) ! snow volume |
|---|
| 363 | smv_i(ji,jj,jl) = MIN( sm_i(ji,jj,jl) , sss_m(ji,jj) ) * v_i(ji,jj,jl) ! salt content |
|---|
| 364 | oa_i(ji,jj,jl) = o_i(ji,jj,jl) * a_i(ji,jj,jl) ! age content |
|---|
| 365 | END DO |
|---|
| 366 | END DO |
|---|
| 367 | END DO |
|---|
| 368 | |
|---|
| 369 | ! for constant salinity in time |
|---|
| 370 | IF( nn_icesal == 1 .OR. nn_icesal == 3 ) THEN |
|---|
| 371 | CALL lim_var_salprof |
|---|
| 372 | smv_i = sm_i * v_i |
|---|
| 373 | ENDIF |
|---|
| 374 | |
|---|
| 375 | !$OMP PARALLEL |
|---|
| 376 | ! Snow temperature and heat content |
|---|
| 377 | DO jk = 1, nlay_s |
|---|
| 378 | DO jl = 1, jpl ! loop over categories |
|---|
| 379 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 380 | DO jj = 1, jpj |
|---|
| 381 | DO ji = 1, jpi |
|---|
| 382 | t_s(ji,jj,jk,jl) = zswitch(ji,jj) * ztm_i_ini(ji,jj) + ( 1._wp - zswitch(ji,jj) ) * rt0 |
|---|
| 383 | ! Snow energy of melting |
|---|
| 384 | e_s(ji,jj,jk,jl) = zswitch(ji,jj) * rhosn * ( cpic * ( rt0 - t_s(ji,jj,jk,jl) ) + lfus ) |
|---|
| 385 | |
|---|
| 386 | ! Mutliply by volume, and divide by number of layers to get heat content in J/m2 |
|---|
| 387 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) * v_s(ji,jj,jl) * r1_nlay_s |
|---|
| 388 | END DO |
|---|
| 389 | END DO |
|---|
| 390 | END DO |
|---|
| 391 | END DO |
|---|
| 392 | |
|---|
| 393 | ! Ice salinity, temperature and heat content |
|---|
| 394 | DO jk = 1, nlay_i |
|---|
| 395 | DO jl = 1, jpl ! loop over categories |
|---|
| 396 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 397 | DO jj = 1, jpj |
|---|
| 398 | DO ji = 1, jpi |
|---|
| 399 | t_i(ji,jj,jk,jl) = zswitch(ji,jj) * ztm_i_ini(ji,jj) + ( 1._wp - zswitch(ji,jj) ) * rt0 |
|---|
| 400 | s_i(ji,jj,jk,jl) = zswitch(ji,jj) * zsm_i_ini(ji,jj) + ( 1._wp - zswitch(ji,jj) ) * rn_simin |
|---|
| 401 | ztmelts = - tmut * s_i(ji,jj,jk,jl) + rt0 !Melting temperature in K |
|---|
| 402 | |
|---|
| 403 | ! heat content per unit volume |
|---|
| 404 | e_i(ji,jj,jk,jl) = zswitch(ji,jj) * rhoic * ( cpic * ( ztmelts - t_i(ji,jj,jk,jl) ) & |
|---|
| 405 | + lfus * ( 1._wp - (ztmelts-rt0) / MIN((t_i(ji,jj,jk,jl)-rt0),-epsi20) ) & |
|---|
| 406 | - rcp * ( ztmelts - rt0 ) ) |
|---|
| 407 | |
|---|
| 408 | ! Mutliply by ice volume, and divide by number of layers to get heat content in J/m2 |
|---|
| 409 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * v_i(ji,jj,jl) * r1_nlay_i |
|---|
| 410 | END DO |
|---|
| 411 | END DO |
|---|
| 412 | END DO |
|---|
| 413 | END DO |
|---|
| 414 | |
|---|
| 415 | DO jl = 1, jpl |
|---|
| 416 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 417 | DO jj = 1, jpj |
|---|
| 418 | DO ji = 1, jpi |
|---|
| 419 | tn_ice (ji,jj,jl) = t_su (ji,jj,jl) |
|---|
| 420 | END DO |
|---|
| 421 | END DO |
|---|
| 422 | END DO |
|---|
| 423 | !$OMP END PARALLEL |
|---|
| 424 | |
|---|
| 425 | ELSE ! if ln_limini=false |
|---|
| 426 | !$OMP PARALLEL |
|---|
| 427 | DO jl = 1, jpl |
|---|
| 428 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 429 | DO jj = 1, jpj |
|---|
| 430 | DO ji = 1, jpi |
|---|
| 431 | a_i (ji,jj,jl) = 0._wp |
|---|
| 432 | v_i (ji,jj,jl) = 0._wp |
|---|
| 433 | v_s (ji,jj,jl) = 0._wp |
|---|
| 434 | smv_i(ji,jj,jl) = 0._wp |
|---|
| 435 | oa_i (ji,jj,jl) = 0._wp |
|---|
| 436 | ht_i (ji,jj,jl) = 0._wp |
|---|
| 437 | ht_s (ji,jj,jl) = 0._wp |
|---|
| 438 | sm_i (ji,jj,jl) = 0._wp |
|---|
| 439 | o_i (ji,jj,jl) = 0._wp |
|---|
| 440 | END DO |
|---|
| 441 | END DO |
|---|
| 442 | END DO |
|---|
| 443 | |
|---|
| 444 | DO jk = 1, nlay_i |
|---|
| 445 | DO jl = 1, jpl |
|---|
| 446 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 447 | DO jj = 1, jpj |
|---|
| 448 | DO ji = 1, jpi |
|---|
| 449 | e_i(ji,jj,jl,jk) = 0._wp |
|---|
| 450 | END DO |
|---|
| 451 | END DO |
|---|
| 452 | END DO |
|---|
| 453 | END DO |
|---|
| 454 | DO jk = 1, nlay_s |
|---|
| 455 | DO jl = 1, jpl |
|---|
| 456 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 457 | DO jj = 1, jpj |
|---|
| 458 | DO ji = 1, jpi |
|---|
| 459 | e_s(ji,jj,jl,jk) = 0._wp |
|---|
| 460 | END DO |
|---|
| 461 | END DO |
|---|
| 462 | END DO |
|---|
| 463 | END DO |
|---|
| 464 | |
|---|
| 465 | DO jl = 1, jpl |
|---|
| 466 | DO jk = 1, nlay_i |
|---|
| 467 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 468 | DO jj = 1, jpj |
|---|
| 469 | DO ji = 1, jpi |
|---|
| 470 | t_i(ji,jj,jk,jl) = rt0 * tmask(ji,jj,1) |
|---|
| 471 | END DO |
|---|
| 472 | END DO |
|---|
| 473 | END DO |
|---|
| 474 | DO jk = 1, nlay_s |
|---|
| 475 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 476 | DO jj = 1, jpj |
|---|
| 477 | DO ji = 1, jpi |
|---|
| 478 | t_s(ji,jj,jk,jl) = rt0 * tmask(ji,jj,1) |
|---|
| 479 | END DO |
|---|
| 480 | END DO |
|---|
| 481 | END DO |
|---|
| 482 | END DO |
|---|
| 483 | !$OMP END PARALLEL |
|---|
| 484 | |
|---|
| 485 | ENDIF ! ln_limini |
|---|
| 486 | |
|---|
| 487 | !$OMP PARALLEL |
|---|
| 488 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 489 | DO jj = 1, jpj |
|---|
| 490 | DO ji = 1, jpi |
|---|
| 491 | at_i (ji,jj) = 0.0_wp |
|---|
| 492 | END DO |
|---|
| 493 | END DO |
|---|
| 494 | DO jl = 1, jpl |
|---|
| 495 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 496 | DO jj = 1, jpj |
|---|
| 497 | DO ji = 1, jpi |
|---|
| 498 | at_i (ji,jj) = at_i (ji,jj) + a_i (ji,jj,jl) |
|---|
| 499 | END DO |
|---|
| 500 | END DO |
|---|
| 501 | END DO |
|---|
| 502 | ! |
|---|
| 503 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 504 | DO jj = 1, jpj |
|---|
| 505 | DO ji = 1, jpi |
|---|
| 506 | !-------------------------------------------------------------------- |
|---|
| 507 | ! 4) Global ice variables for output diagnostics | |
|---|
| 508 | !-------------------------------------------------------------------- |
|---|
| 509 | u_ice (ji,jj) = 0._wp |
|---|
| 510 | v_ice (ji,jj) = 0._wp |
|---|
| 511 | stress1_i(ji,jj) = 0._wp |
|---|
| 512 | stress2_i(ji,jj) = 0._wp |
|---|
| 513 | stress12_i(ji,jj) = 0._wp |
|---|
| 514 | |
|---|
| 515 | !-------------------------------------------------------------------- |
|---|
| 516 | ! 5) Moments for advection |
|---|
| 517 | !-------------------------------------------------------------------- |
|---|
| 518 | |
|---|
| 519 | sxopw (ji,jj) = 0._wp |
|---|
| 520 | syopw (ji,jj) = 0._wp |
|---|
| 521 | sxxopw(ji,jj) = 0._wp |
|---|
| 522 | syyopw(ji,jj) = 0._wp |
|---|
| 523 | sxyopw(ji,jj) = 0._wp |
|---|
| 524 | END DO |
|---|
| 525 | END DO |
|---|
| 526 | |
|---|
| 527 | DO jl = 1, jpl |
|---|
| 528 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 529 | DO jj = 1, jpj |
|---|
| 530 | DO ji = 1, jpi |
|---|
| 531 | sxice (ji,jj,jl) = 0._wp ; sxsn (ji,jj,jl) = 0._wp ; sxa (ji,jj,jl) = 0._wp |
|---|
| 532 | syice (ji,jj,jl) = 0._wp ; sysn (ji,jj,jl) = 0._wp ; sya (ji,jj,jl) = 0._wp |
|---|
| 533 | sxxice(ji,jj,jl) = 0._wp ; sxxsn(ji,jj,jl) = 0._wp ; sxxa (ji,jj,jl) = 0._wp |
|---|
| 534 | syyice(ji,jj,jl) = 0._wp ; syysn(ji,jj,jl) = 0._wp ; syya (ji,jj,jl) = 0._wp |
|---|
| 535 | sxyice(ji,jj,jl) = 0._wp ; sxysn(ji,jj,jl) = 0._wp ; sxya (ji,jj,jl) = 0._wp |
|---|
| 536 | |
|---|
| 537 | sxc0 (ji,jj,jl) = 0._wp |
|---|
| 538 | syc0 (ji,jj,jl) = 0._wp |
|---|
| 539 | sxxc0 (ji,jj,jl) = 0._wp |
|---|
| 540 | syyc0 (ji,jj,jl) = 0._wp |
|---|
| 541 | sxyc0 (ji,jj,jl) = 0._wp |
|---|
| 542 | |
|---|
| 543 | sxsal (ji,jj,jl) = 0._wp |
|---|
| 544 | sysal (ji,jj,jl) = 0._wp |
|---|
| 545 | sxxsal (ji,jj,jl) = 0._wp |
|---|
| 546 | syysal (ji,jj,jl) = 0._wp |
|---|
| 547 | sxysal (ji,jj,jl) = 0._wp |
|---|
| 548 | |
|---|
| 549 | sxage (ji,jj,jl) = 0._wp |
|---|
| 550 | syage (ji,jj,jl) = 0._wp |
|---|
| 551 | sxxage (ji,jj,jl) = 0._wp |
|---|
| 552 | syyage (ji,jj,jl) = 0._wp |
|---|
| 553 | sxyage (ji,jj,jl) = 0._wp |
|---|
| 554 | END DO |
|---|
| 555 | END DO |
|---|
| 556 | END DO |
|---|
| 557 | |
|---|
| 558 | DO jl = 1, jpl |
|---|
| 559 | DO jk = 1, nlay_i |
|---|
| 560 | !$OMP DO schedule(static) private(jj,ji) |
|---|
| 561 | DO jj = 1, jpj |
|---|
| 562 | DO ji = 1, jpi |
|---|
| 563 | sxe (ji,jj,jk,jl)= 0._wp |
|---|
| 564 | sye (ji,jj,jk,jl)= 0._wp |
|---|
| 565 | sxxe (ji,jj,jk,jl)= 0._wp |
|---|
| 566 | syye (ji,jj,jk,jl)= 0._wp |
|---|
| 567 | sxye (ji,jj,jk,jl)= 0._wp |
|---|
| 568 | END DO |
|---|
| 569 | END DO |
|---|
| 570 | END DO |
|---|
| 571 | END DO |
|---|
| 572 | !$OMP END PARALLEL |
|---|
| 573 | |
|---|
| 574 | |
|---|
| 575 | !!!clem |
|---|
| 576 | !! ! Output the initial state and forcings |
|---|
| 577 | !! CALL dia_wri_state( 'output.init', nit000 ) |
|---|
| 578 | !!! |
|---|
| 579 | |
|---|
| 580 | CALL wrk_dealloc( jpi, jpj, jpl, zh_i_ini, za_i_ini ) |
|---|
| 581 | CALL wrk_dealloc( jpi, jpj, zht_i_ini, zat_i_ini, zvt_i_ini, zts_u_ini, zht_s_ini, zsm_i_ini, ztm_i_ini ) |
|---|
| 582 | CALL wrk_dealloc( jpi, jpj, zswitch ) |
|---|
| 583 | |
|---|
| 584 | END SUBROUTINE lim_istate |
|---|
| 585 | |
|---|
| 586 | SUBROUTINE lim_istate_init |
|---|
| 587 | !!------------------------------------------------------------------- |
|---|
| 588 | !! *** ROUTINE lim_istate_init *** |
|---|
| 589 | !! |
|---|
| 590 | !! ** Purpose : Definition of initial state of the ice |
|---|
| 591 | !! |
|---|
| 592 | !! ** Method : Read the namiceini namelist and check the parameter |
|---|
| 593 | !! values called at the first timestep (nit000) |
|---|
| 594 | !! |
|---|
| 595 | !! ** input : |
|---|
| 596 | !! Namelist namiceini |
|---|
| 597 | !! |
|---|
| 598 | !! history : |
|---|
| 599 | !! 8.5 ! 03-08 (C. Ethe) original code |
|---|
| 600 | !! 8.5 ! 07-11 (M. Vancoppenolle) rewritten initialization |
|---|
| 601 | !!----------------------------------------------------------------------------- |
|---|
| 602 | ! |
|---|
| 603 | INTEGER :: ios,ierr,inum_ice ! Local integer output status for namelist read |
|---|
| 604 | INTEGER :: ji,jj |
|---|
| 605 | INTEGER :: ifpr, ierror |
|---|
| 606 | ! |
|---|
| 607 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ice files |
|---|
| 608 | TYPE(FLD_N) :: sn_hti, sn_hts, sn_ati, sn_tsu, sn_tmi, sn_smi |
|---|
| 609 | TYPE(FLD_N), DIMENSION(jpfldi) :: slf_i ! array of namelist informations on the fields to read |
|---|
| 610 | ! |
|---|
| 611 | NAMELIST/namiceini/ ln_limini, ln_limini_file, rn_thres_sst, rn_hts_ini_n, rn_hts_ini_s, & |
|---|
| 612 | & rn_hti_ini_n, rn_hti_ini_s, rn_ati_ini_n, rn_ati_ini_s, rn_smi_ini_n, & |
|---|
| 613 | & rn_smi_ini_s, rn_tmi_ini_n, rn_tmi_ini_s, & |
|---|
| 614 | & sn_hti, sn_hts, sn_ati, sn_tsu, sn_tmi, sn_smi, cn_dir |
|---|
| 615 | !!----------------------------------------------------------------------------- |
|---|
| 616 | ! |
|---|
| 617 | REWIND( numnam_ice_ref ) ! Namelist namiceini in reference namelist : Ice initial state |
|---|
| 618 | READ ( numnam_ice_ref, namiceini, IOSTAT = ios, ERR = 901) |
|---|
| 619 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namiceini in reference namelist', lwp ) |
|---|
| 620 | |
|---|
| 621 | REWIND( numnam_ice_cfg ) ! Namelist namiceini in configuration namelist : Ice initial state |
|---|
| 622 | READ ( numnam_ice_cfg, namiceini, IOSTAT = ios, ERR = 902 ) |
|---|
| 623 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namiceini in configuration namelist', lwp ) |
|---|
| 624 | IF(lwm) WRITE ( numoni, namiceini ) |
|---|
| 625 | |
|---|
| 626 | slf_i(jp_hti) = sn_hti ; slf_i(jp_hts) = sn_hts |
|---|
| 627 | slf_i(jp_ati) = sn_ati ; slf_i(jp_tsu) = sn_tsu |
|---|
| 628 | slf_i(jp_tmi) = sn_tmi ; slf_i(jp_smi) = sn_smi |
|---|
| 629 | |
|---|
| 630 | ! Define the initial parameters |
|---|
| 631 | ! ------------------------- |
|---|
| 632 | |
|---|
| 633 | IF(lwp) THEN |
|---|
| 634 | WRITE(numout,*) |
|---|
| 635 | WRITE(numout,*) 'lim_istate_init : ice parameters inititialisation ' |
|---|
| 636 | WRITE(numout,*) '~~~~~~~~~~~~~~~' |
|---|
| 637 | WRITE(numout,*) ' initialization with ice (T) or not (F) ln_limini = ', ln_limini |
|---|
| 638 | WRITE(numout,*) ' ice initialization from a netcdf file ln_limini_file = ', ln_limini_file |
|---|
| 639 | WRITE(numout,*) ' threshold water temp. for initial sea-ice rn_thres_sst = ', rn_thres_sst |
|---|
| 640 | WRITE(numout,*) ' initial snow thickness in the north rn_hts_ini_n = ', rn_hts_ini_n |
|---|
| 641 | WRITE(numout,*) ' initial snow thickness in the south rn_hts_ini_s = ', rn_hts_ini_s |
|---|
| 642 | WRITE(numout,*) ' initial ice thickness in the north rn_hti_ini_n = ', rn_hti_ini_n |
|---|
| 643 | WRITE(numout,*) ' initial ice thickness in the south rn_hti_ini_s = ', rn_hti_ini_s |
|---|
| 644 | WRITE(numout,*) ' initial ice concentr. in the north rn_ati_ini_n = ', rn_ati_ini_n |
|---|
| 645 | WRITE(numout,*) ' initial ice concentr. in the north rn_ati_ini_s = ', rn_ati_ini_s |
|---|
| 646 | WRITE(numout,*) ' initial ice salinity in the north rn_smi_ini_n = ', rn_smi_ini_n |
|---|
| 647 | WRITE(numout,*) ' initial ice salinity in the south rn_smi_ini_s = ', rn_smi_ini_s |
|---|
| 648 | WRITE(numout,*) ' initial ice/snw temp in the north rn_tmi_ini_n = ', rn_tmi_ini_n |
|---|
| 649 | WRITE(numout,*) ' initial ice/snw temp in the south rn_tmi_ini_s = ', rn_tmi_ini_s |
|---|
| 650 | ENDIF |
|---|
| 651 | |
|---|
| 652 | IF( ln_limini_file ) THEN ! Ice initialization using input file |
|---|
| 653 | ! |
|---|
| 654 | ! set si structure |
|---|
| 655 | ALLOCATE( si(jpfldi), STAT=ierror ) |
|---|
| 656 | IF( ierror > 0 ) THEN |
|---|
| 657 | CALL ctl_stop( 'Ice_ini in limistate: unable to allocate si structure' ) ; RETURN |
|---|
| 658 | ENDIF |
|---|
| 659 | |
|---|
| 660 | DO ifpr = 1, jpfldi |
|---|
| 661 | ALLOCATE( si(ifpr)%fnow(jpi,jpj,1) ) |
|---|
| 662 | ALLOCATE( si(ifpr)%fdta(jpi,jpj,1,2) ) |
|---|
| 663 | END DO |
|---|
| 664 | |
|---|
| 665 | ! fill si with slf_i and control print |
|---|
| 666 | CALL fld_fill( si, slf_i, cn_dir, 'lim_istate', 'lim istate ini', 'numnam_ice' ) |
|---|
| 667 | |
|---|
| 668 | CALL fld_read( nit000, 1, si ) ! input fields provided at the current time-step |
|---|
| 669 | |
|---|
| 670 | ENDIF |
|---|
| 671 | |
|---|
| 672 | END SUBROUTINE lim_istate_init |
|---|
| 673 | |
|---|
| 674 | #else |
|---|
| 675 | !!---------------------------------------------------------------------- |
|---|
| 676 | !! Default option : Empty module NO LIM sea-ice model |
|---|
| 677 | !!---------------------------------------------------------------------- |
|---|
| 678 | CONTAINS |
|---|
| 679 | SUBROUTINE lim_istate ! Empty routine |
|---|
| 680 | END SUBROUTINE lim_istate |
|---|
| 681 | #endif |
|---|
| 682 | |
|---|
| 683 | !!====================================================================== |
|---|
| 684 | END MODULE limistate |
|---|
