[2113] | 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 | !! 4.0 ! 2011-02 (G. Madec) dynamical allocation |
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| 8 | !!---------------------------------------------------------------------- |
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| 9 | #if defined key_lim3 |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | !! 'key_lim3' : LIM3 sea-ice model |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! lim_istate : Initialisation of diagnostics ice variables |
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| 14 | !! lim_istate_init : initialization of ice state and namelist read |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | USE phycst ! physical constant |
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| 17 | USE oce ! dynamics and tracers variables |
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| 18 | USE dom_oce ! ocean domain |
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| 19 | USE sbc_oce ! Surface boundary condition: ocean fields |
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| 20 | USE sbc_ice ! Surface boundary condition: ice fields |
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| 21 | USE eosbn2 ! equation of state |
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| 22 | USE ice ! sea-ice variables |
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| 23 | USE par_ice ! ice parameters |
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| 24 | USE dom_ice ! sea-ice domain |
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| 25 | USE in_out_manager ! I/O manager |
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| 26 | USE lbclnk ! lateral boundary condition - MPP exchanges |
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| 27 | USE lib_mpp ! MPP library |
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| 28 | USE wrk_nemo ! work arrays |
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| 29 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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| 30 | |
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| 31 | IMPLICIT NONE |
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| 32 | PRIVATE |
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| 33 | |
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| 34 | PUBLIC lim_istate ! routine called by lim_init.F90 |
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| 35 | |
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| 36 | ! !!** init namelist (namiceini) ** |
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| 37 | REAL(wp) :: ttest = 2.0_wp ! threshold water temperature for initial sea ice |
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| 38 | REAL(wp) :: hninn = 0.5_wp ! initial snow thickness in the north |
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| 39 | REAL(wp) :: hginn_u = 2.5_wp ! initial ice thickness in the north |
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| 40 | REAL(wp) :: aginn_u = 0.7_wp ! initial leads area in the north |
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| 41 | REAL(wp) :: hginn_d = 5.0_wp ! initial ice thickness in the north |
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| 42 | REAL(wp) :: aginn_d = 0.25_wp ! initial leads area in the north |
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| 43 | REAL(wp) :: hnins = 0.1_wp ! initial snow thickness in the south |
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| 44 | REAL(wp) :: hgins_u = 1.0_wp ! initial ice thickness in the south |
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| 45 | REAL(wp) :: agins_u = 0.7_wp ! initial leads area in the south |
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| 46 | REAL(wp) :: hgins_d = 2.0_wp ! initial ice thickness in the south |
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| 47 | REAL(wp) :: agins_d = 0.2_wp ! initial leads area in the south |
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| 48 | REAL(wp) :: sinn = 6.301_wp ! initial salinity |
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| 49 | REAL(wp) :: sins = 6.301_wp ! |
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| 50 | |
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| 51 | !!---------------------------------------------------------------------- |
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| 52 | !! NEMO/LIM3 3.4 , UCL - NEMO Consortium (2011) |
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| 53 | !! $Id: limistate.F90 3625 2012-11-21 13:19:18Z acc $ |
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| 54 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 55 | !!---------------------------------------------------------------------- |
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| 56 | CONTAINS |
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| 57 | |
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| 58 | SUBROUTINE lim_istate |
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| 59 | !!------------------------------------------------------------------- |
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| 60 | !! *** ROUTINE lim_istate *** |
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| 61 | !! |
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| 62 | !! ** Purpose : defined the sea-ice initial state |
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| 63 | !! |
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| 64 | !! ** Method : restart from a state defined in a binary file |
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| 65 | !! or from arbitrary sea-ice conditions |
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| 66 | !!------------------------------------------------------------------- |
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| 67 | INTEGER :: ji, jj, jk, jl ! dummy loop indices |
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| 68 | REAL(wp) :: zeps6, zeps, ztmelts, epsi06 ! local scalars |
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| 69 | REAL(wp) :: zvol, zare, zh, zh1, zh2, zh3, zan, zbn, zas, zbs |
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| 70 | REAL(wp), POINTER, DIMENSION(:) :: zgfactorn, zhin |
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| 71 | REAL(wp), POINTER, DIMENSION(:) :: zgfactors, zhis |
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| 72 | REAL(wp), POINTER, DIMENSION(:,:) :: zidto ! ice indicator |
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| 73 | !-------------------------------------------------------------------- |
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| 74 | |
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| 75 | CALL wrk_alloc( jpm, zgfactorn, zgfactors, zhin, zhis ) |
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| 76 | CALL wrk_alloc( jpi, jpj, zidto ) |
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| 77 | |
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| 78 | !-------------------------------------------------------------------- |
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| 79 | ! 1) Preliminary things |
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| 80 | !-------------------------------------------------------------------- |
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| 81 | epsi06 = 1.e-6_wp |
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| 82 | |
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| 83 | CALL lim_istate_init ! reading the initials parameters of the ice |
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| 84 | |
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| 85 | !!gm in lim2 the initialisation if only done if required in the namelist : |
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| 86 | !!gm IF( .NOT. ln_limini ) THEN |
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| 87 | !!gm this should be added in lim3 namelist... |
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| 88 | |
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| 89 | !-------------------------------------------------------------------- |
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| 90 | ! 2) Ice initialization (hi,hs,frld,t_su,sm_i,t_i,t_s) | |
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| 91 | !-------------------------------------------------------------------- |
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| 92 | |
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| 93 | IF(lwp) WRITE(numout,*) |
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| 94 | IF(lwp) WRITE(numout,*) 'lim_istate : Ice initialization ' |
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| 95 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ' |
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| 96 | |
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| 97 | t_bo(:,:) = tfreez( tsn(:,:,1,jp_sal) ) * tmask(:,:,1) ! freezing/melting point of sea water [Celcius] |
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| 98 | |
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| 99 | DO jj = 1, jpj ! ice if sst <= t-freez + ttest |
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| 100 | DO ji = 1, jpi |
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| 101 | IF( tsn(ji,jj,1,jp_tem) - t_bo(ji,jj) >= ttest ) THEN ; zidto(ji,jj) = 0.e0 ! no ice |
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| 102 | ELSE ; zidto(ji,jj) = 1.e0 ! ice |
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| 103 | ENDIF |
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| 104 | END DO |
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| 105 | END DO |
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| 106 | |
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| 107 | t_bo(:,:) = t_bo(:,:) + rt0 ! t_bo converted from Celsius to Kelvin (rt0 over land) |
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| 108 | |
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| 109 | ! constants for heat contents |
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| 110 | zeps = 1.e-20_wp |
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| 111 | zeps6 = 1.e-06_wp |
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| 112 | |
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| 113 | ! zgfactor for initial ice distribution |
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| 114 | zgfactorn(:) = 0._wp |
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| 115 | zgfactors(:) = 0._wp |
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| 116 | |
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| 117 | ! first ice type |
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| 118 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) |
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| 119 | zhin (1) = ( hi_max(jl-1) + hi_max(jl) ) * 0.5_wp |
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| 120 | zgfactorn(1) = zgfactorn(1) + exp(-(zhin(1)-hginn_u)*(zhin(1)-hginn_u) * 0.5_wp ) |
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| 121 | zhis (1) = ( hi_max(jl-1) + hi_max(jl) ) * 0.5_wp |
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| 122 | zgfactors(1) = zgfactors(1) + exp(-(zhis(1)-hgins_u)*(zhis(1)-hgins_u) * 0.5_wp ) |
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| 123 | END DO ! jl |
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| 124 | zgfactorn(1) = aginn_u / zgfactorn(1) |
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| 125 | zgfactors(1) = agins_u / zgfactors(1) |
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| 126 | |
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| 127 | ! ------------- |
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| 128 | ! new distribution, polynom of second order, conserving area and volume |
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| 129 | zh1 = 0._wp |
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| 130 | zh2 = 0._wp |
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| 131 | zh3 = 0._wp |
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| 132 | DO jl = 1, jpl |
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| 133 | zh = ( hi_max(jl-1) + hi_max(jl) ) * 0.5_wp |
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| 134 | zh1 = zh1 + zh |
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| 135 | zh2 = zh2 + zh * zh |
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| 136 | zh3 = zh3 + zh * zh * zh |
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| 137 | END DO |
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| 138 | IF(lwp) WRITE(numout,*) ' zh1 : ', zh1 |
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| 139 | IF(lwp) WRITE(numout,*) ' zh2 : ', zh2 |
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| 140 | IF(lwp) WRITE(numout,*) ' zh3 : ', zh3 |
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| 141 | |
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| 142 | zvol = aginn_u * hginn_u |
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| 143 | zare = aginn_u |
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| 144 | IF( jpl >= 2 ) THEN |
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| 145 | zbn = ( zvol*zh2 - zare*zh3 ) / ( zh2*zh2 - zh1*zh3) |
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| 146 | zan = ( zare - zbn*zh1 ) / zh2 |
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| 147 | ENDIF |
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| 148 | |
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| 149 | IF(lwp) WRITE(numout,*) ' zvol: ', zvol |
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| 150 | IF(lwp) WRITE(numout,*) ' zare: ', zare |
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| 151 | IF(lwp) WRITE(numout,*) ' zbn : ', zbn |
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| 152 | IF(lwp) WRITE(numout,*) ' zan : ', zan |
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| 153 | |
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| 154 | zvol = agins_u * hgins_u |
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| 155 | zare = agins_u |
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| 156 | IF( jpl >= 2 ) THEN |
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| 157 | zbs = ( zvol*zh2 - zare*zh3 ) / ( zh2*zh2 - zh1*zh3) |
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| 158 | zas = ( zare - zbs*zh1 ) / zh2 |
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| 159 | ENDIF |
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| 160 | |
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| 161 | IF(lwp) WRITE(numout,*) ' zvol: ', zvol |
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| 162 | IF(lwp) WRITE(numout,*) ' zare: ', zare |
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| 163 | IF(lwp) WRITE(numout,*) ' zbn : ', zbn |
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| 164 | IF(lwp) WRITE(numout,*) ' zan : ', zan |
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| 165 | |
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| 166 | !end of new lines |
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| 167 | ! ------------- |
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| 168 | !!! |
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| 169 | ! retour a LIMA_MEC |
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| 170 | ! ! second ice type |
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| 171 | ! zdummy = hi_max(ice_cat_bounds(2,1)-1) |
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| 172 | ! hi_max(ice_cat_bounds(2,1)-1) = 0.0 |
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| 173 | |
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| 174 | ! ! here to change !!!! |
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| 175 | ! jm = 2 |
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| 176 | ! DO jl = ice_cat_bounds(jm,1), ice_cat_bounds(jm,2) |
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| 177 | ! zhin (2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 178 | ! zhin (2) = ( hi_max_typ(jl-ice_cat_bounds(2,1),jm ) + & |
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| 179 | ! hi_max_typ(jl-ice_cat_bounds(2,1) + 1,jm) ) / 2.0 |
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| 180 | ! zgfactorn(2) = zgfactorn(2) + exp(-(zhin(2)-hginn_d)*(zhin(2)-hginn_d)/2.0) |
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| 181 | ! zhis (2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 182 | ! zhis (2) = ( hi_max_typ(jl-ice_cat_bounds(2,1),jm ) + & |
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| 183 | ! hi_max_typ(jl-ice_cat_bounds(2,1) + 1,jm) ) / 2.0 |
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| 184 | ! zgfactors(2) = zgfactors(2) + exp(-(zhis(2)-hgins_d)*(zhis(2)-hgins_d)/2.0) |
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| 185 | ! END DO ! jl |
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| 186 | ! zgfactorn(2) = aginn_d / zgfactorn(2) |
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| 187 | ! zgfactors(2) = agins_d / zgfactors(2) |
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| 188 | ! hi_max(ice_cat_bounds(2,1)-1) = zdummy |
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| 189 | ! END retour a LIMA_MEC |
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| 190 | !!! |
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| 191 | |
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| 192 | !!gm optimisation : loop over the ice categories inside the ji, jj loop !!! |
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| 193 | |
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| 194 | DO jj = 1, jpj |
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| 195 | DO ji = 1, jpi |
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| 196 | |
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| 197 | !--- Northern hemisphere |
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| 198 | !---------------------------------------------------------------- |
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| 199 | IF( fcor(ji,jj) >= 0._wp ) THEN |
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| 200 | |
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| 201 | !----------------------- |
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| 202 | ! Ice area / thickness |
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| 203 | !----------------------- |
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| 204 | |
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| 205 | IF ( jpl .EQ. 1) THEN ! one category |
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| 206 | |
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| 207 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) ! loop over ice thickness categories |
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| 208 | a_i(ji,jj,jl) = zidto(ji,jj) * aginn_u |
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| 209 | ht_i(ji,jj,jl) = zidto(ji,jj) * hginn_u |
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| 210 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 211 | END DO |
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| 212 | |
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| 213 | ELSE ! several categories |
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| 214 | |
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| 215 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) ! loop over ice thickness categories |
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| 216 | zhin(1) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 217 | a_i(ji,jj,jl) = zidto(ji,jj) * MAX( zgfactorn(1) * exp(-(zhin(1)-hginn_u)* & |
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| 218 | (zhin(1)-hginn_u)/2.0) , epsi06) |
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| 219 | ! new line |
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| 220 | a_i(ji,jj,jl) = zidto(ji,jj) * ( zan * zhin(1) * zhin(1) + zbn * zhin(1) ) |
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| 221 | ht_i(ji,jj,jl) = zidto(ji,jj) * zhin(1) |
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| 222 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 223 | END DO |
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| 224 | |
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| 225 | ENDIF |
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| 226 | |
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| 227 | |
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| 228 | !!! |
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| 229 | ! retour a LIMA_MEC |
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| 230 | ! !ridged ice |
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| 231 | ! zdummy = hi_max(ice_cat_bounds(2,1)-1) |
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| 232 | ! hi_max(ice_cat_bounds(2,1)-1) = 0.0 |
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| 233 | ! DO jl = ice_cat_bounds(2,1), ice_cat_bounds(2,2) ! loop over ice thickness categories |
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| 234 | ! zhin(2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 235 | ! a_i(ji,jj,jl) = zidto(ji,jj) * MAX( zgfactorn(2) * exp(-(zhin(2)-hginn_d)* & |
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| 236 | ! (zhin(2)-hginn_d)/2.0) , epsi06) |
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| 237 | ! ht_i(ji,jj,jl) = zidto(ji,jj) * zhin(2) |
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| 238 | ! v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 239 | ! END DO |
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| 240 | ! hi_max(ice_cat_bounds(2,1)-1) = zdummy |
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| 241 | |
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| 242 | ! !rafted ice |
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| 243 | ! jl = 6 |
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| 244 | ! a_i(ji,jj,jl) = 0.0 |
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| 245 | ! ht_i(ji,jj,jl) = 0.0 |
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| 246 | ! v_i(ji,jj,jl) = 0.0 |
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| 247 | ! END retour a LIMA_MEC |
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| 248 | !!! |
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| 249 | |
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| 250 | DO jl = 1, jpl |
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| 251 | |
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| 252 | !------------- |
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| 253 | ! Snow depth |
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| 254 | !------------- |
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| 255 | ht_s(ji,jj,jl) = zidto(ji,jj) * hninn |
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| 256 | v_s(ji,jj,jl) = ht_s(ji,jj,jl)*a_i(ji,jj,jl) |
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| 257 | |
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| 258 | !--------------- |
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| 259 | ! Ice salinity |
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| 260 | !--------------- |
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| 261 | sm_i(ji,jj,jl) = zidto(ji,jj) * sinn + ( 1.0 - zidto(ji,jj) ) * 0.1 |
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| 262 | smv_i(ji,jj,jl) = MIN( sm_i(ji,jj,jl) , sss_m(ji,jj) ) * v_i(ji,jj,jl) |
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| 263 | |
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| 264 | !---------- |
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| 265 | ! Ice age |
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| 266 | !---------- |
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| 267 | o_i(ji,jj,jl) = zidto(ji,jj) * 1.0 + ( 1.0 - zidto(ji,jj) ) |
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| 268 | oa_i(ji,jj,jl) = o_i(ji,jj,jl) * a_i(ji,jj,jl) |
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| 269 | |
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| 270 | !------------------------------ |
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| 271 | ! Sea ice surface temperature |
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| 272 | !------------------------------ |
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| 273 | |
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| 274 | t_su(ji,jj,jl) = zidto(ji,jj) * 270.0 + ( 1.0 - zidto(ji,jj) ) * t_bo(ji,jj) |
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| 275 | |
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| 276 | !------------------------------------ |
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| 277 | ! Snow temperature and heat content |
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| 278 | !------------------------------------ |
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| 279 | |
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| 280 | DO jk = 1, nlay_s |
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| 281 | t_s(ji,jj,jk,jl) = zidto(ji,jj) * 270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
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| 282 | ! Snow energy of melting |
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| 283 | e_s(ji,jj,jk,jl) = zidto(ji,jj) * rhosn * ( cpic * ( rtt - t_s(ji,jj,jk,jl) ) + lfus ) |
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| 284 | ! Change dimensions |
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| 285 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) / unit_fac |
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| 286 | ! Multiply by volume, so that heat content in 10^9 Joules |
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| 287 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) * area(ji,jj) * & |
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| 288 | v_s(ji,jj,jl) / nlay_s |
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| 289 | END DO !jk |
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| 290 | |
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| 291 | !----------------------------------------------- |
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| 292 | ! Ice salinities, temperature and heat content |
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| 293 | !----------------------------------------------- |
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| 294 | |
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| 295 | DO jk = 1, nlay_i |
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| 296 | t_i(ji,jj,jk,jl) = zidto(ji,jj)*270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
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| 297 | s_i(ji,jj,jk,jl) = zidto(ji,jj) * sinn + ( 1.0 - zidto(ji,jj) ) * 0.1 |
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| 298 | ztmelts = - tmut * s_i(ji,jj,jk,jl) + rtt !Melting temperature in K |
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| 299 | |
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| 300 | ! heat content per unit volume |
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| 301 | e_i(ji,jj,jk,jl) = zidto(ji,jj) * rhoic * & |
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| 302 | ( cpic * ( ztmelts - t_i(ji,jj,jk,jl) ) & |
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| 303 | + lfus * ( 1.0 - (ztmelts-rtt) / MIN((t_i(ji,jj,jk,jl)-rtt),-zeps) ) & |
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| 304 | - rcp * ( ztmelts - rtt ) & |
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| 305 | ) |
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| 306 | |
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| 307 | ! Correct dimensions to avoid big values |
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| 308 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) / unit_fac |
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| 309 | |
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| 310 | ! Mutliply by ice volume, and divide by number of layers to get heat content in 10^9 J |
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| 311 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * & |
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| 312 | area(ji,jj) * a_i(ji,jj,jl) * ht_i(ji,jj,jl) / & |
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| 313 | nlay_i |
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| 314 | END DO ! jk |
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| 315 | |
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| 316 | END DO ! jl |
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| 317 | |
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| 318 | ELSE ! on fcor |
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| 319 | |
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| 320 | !--- Southern hemisphere |
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| 321 | !---------------------------------------------------------------- |
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| 322 | |
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| 323 | !----------------------- |
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| 324 | ! Ice area / thickness |
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| 325 | !----------------------- |
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| 326 | |
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| 327 | IF ( jpl .EQ. 1) THEN ! one category |
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| 328 | |
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| 329 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) ! loop over ice thickness categories |
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| 330 | a_i(ji,jj,jl) = zidto(ji,jj) * agins_u |
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| 331 | ht_i(ji,jj,jl) = zidto(ji,jj) * hgins_u |
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| 332 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 333 | END DO |
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| 334 | |
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| 335 | ELSE ! several categories |
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| 336 | |
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| 337 | !level ice |
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| 338 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) !over thickness categories |
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| 339 | |
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| 340 | zhis(1) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 341 | a_i(ji,jj,jl) = zidto(ji,jj) * MAX( zgfactors(1) * exp(-(zhis(1)-hgins_u) * & |
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| 342 | (zhis(1)-hgins_u)/2.0) , epsi06 ) |
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| 343 | ! new line square distribution volume conserving |
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| 344 | a_i(ji,jj,jl) = zidto(ji,jj) * ( zas * zhis(1) * zhis(1) + zbs * zhis(1) ) |
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| 345 | ht_i(ji,jj,jl) = zidto(ji,jj) * zhis(1) |
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| 346 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 347 | |
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| 348 | END DO ! jl |
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| 349 | |
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| 350 | ENDIF |
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| 351 | |
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| 352 | !!! |
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| 353 | ! retour a LIMA_MEC |
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| 354 | ! !ridged ice |
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| 355 | ! zdummy = hi_max(ice_cat_bounds(2,1)-1) |
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| 356 | ! hi_max(ice_cat_bounds(2,1)-1) = 0.0 |
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| 357 | ! DO jl = ice_cat_bounds(2,1), ice_cat_bounds(2,2) !over thickness categories |
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| 358 | ! zhis(2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 359 | ! a_i(ji,jj,jl) = zidto(ji,jj)*MAX( zgfactors(2) & |
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| 360 | ! & * exp(-(zhis(2)-hgins_d)*(zhis(2)-hgins_d)/2.0), epsi06 ) |
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| 361 | ! ht_i(ji,jj,jl) = zidto(ji,jj) * zhis(2) |
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| 362 | ! v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 363 | ! END DO |
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| 364 | ! hi_max(ice_cat_bounds(2,1)-1) = zdummy |
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| 365 | |
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| 366 | ! !rafted ice |
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| 367 | ! jl = 6 |
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| 368 | ! a_i(ji,jj,jl) = 0.0 |
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| 369 | ! ht_i(ji,jj,jl) = 0.0 |
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| 370 | ! v_i(ji,jj,jl) = 0.0 |
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| 371 | ! END retour a LIMA_MEC |
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| 372 | !!! |
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| 373 | |
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| 374 | DO jl = 1, jpl !over thickness categories |
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| 375 | |
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| 376 | !--------------- |
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| 377 | ! Snow depth |
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| 378 | !--------------- |
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| 379 | |
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| 380 | ht_s(ji,jj,jl) = zidto(ji,jj) * hnins |
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| 381 | v_s(ji,jj,jl) = ht_s(ji,jj,jl)*a_i(ji,jj,jl) |
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| 382 | |
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| 383 | !--------------- |
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| 384 | ! Ice salinity |
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| 385 | !--------------- |
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| 386 | |
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| 387 | sm_i(ji,jj,jl) = zidto(ji,jj) * sins + ( 1.0 - zidto(ji,jj) ) * 0.1 |
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| 388 | smv_i(ji,jj,jl) = MIN( sm_i(ji,jj,jl) , sss_m(ji,jj) ) * v_i(ji,jj,jl) |
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| 389 | |
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| 390 | !---------- |
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| 391 | ! Ice age |
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| 392 | !---------- |
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| 393 | |
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| 394 | o_i(ji,jj,jl) = zidto(ji,jj) * 1.0 + ( 1.0 - zidto(ji,jj) ) |
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| 395 | oa_i(ji,jj,jl) = o_i(ji,jj,jl) * a_i(ji,jj,jl) |
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| 396 | |
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| 397 | !------------------------------ |
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| 398 | ! Sea ice surface temperature |
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| 399 | !------------------------------ |
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| 400 | |
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| 401 | t_su(ji,jj,jl) = zidto(ji,jj) * 270.0 + ( 1.0 - zidto(ji,jj) ) * t_bo(ji,jj) |
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| 402 | |
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| 403 | !---------------------------------- |
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| 404 | ! Snow temperature / heat content |
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| 405 | !---------------------------------- |
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| 406 | |
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| 407 | DO jk = 1, nlay_s |
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| 408 | t_s(ji,jj,jk,jl) = zidto(ji,jj) * 270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
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| 409 | ! Snow energy of melting |
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| 410 | e_s(ji,jj,jk,jl) = zidto(ji,jj) * rhosn * ( cpic * ( rtt - t_s(ji,jj,jk,jl) ) + lfus ) |
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| 411 | ! Change dimensions |
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| 412 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) / unit_fac |
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| 413 | ! Multiply by volume, so that heat content in 10^9 Joules |
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| 414 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) * area(ji,jj) * & |
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| 415 | v_s(ji,jj,jl) / nlay_s |
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| 416 | END DO |
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| 417 | |
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| 418 | !--------------------------------------------- |
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| 419 | ! Ice temperature, salinity and heat content |
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| 420 | !--------------------------------------------- |
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| 421 | |
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| 422 | DO jk = 1, nlay_i |
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| 423 | t_i(ji,jj,jk,jl) = zidto(ji,jj)*270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
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| 424 | s_i(ji,jj,jk,jl) = zidto(ji,jj) * sins + ( 1.0 - zidto(ji,jj) ) * 0.1 |
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| 425 | ztmelts = - tmut * s_i(ji,jj,jk,jl) + rtt !Melting temperature in K |
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| 426 | |
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| 427 | ! heat content per unit volume |
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| 428 | e_i(ji,jj,jk,jl) = zidto(ji,jj) * rhoic * & |
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| 429 | ( cpic * ( ztmelts - t_i(ji,jj,jk,jl) ) & |
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| 430 | + lfus * ( 1.0 - (ztmelts-rtt) / MIN((t_i(ji,jj,jk,jl)-rtt),-zeps) ) & |
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| 431 | - rcp * ( ztmelts - rtt ) & |
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| 432 | ) |
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| 433 | |
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| 434 | ! Correct dimensions to avoid big values |
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| 435 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) / unit_fac |
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| 436 | |
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| 437 | ! Mutliply by ice volume, and divide by number of layers to get heat content in 10^9 J |
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| 438 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * & |
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| 439 | area(ji,jj) * a_i(ji,jj,jl) * ht_i(ji,jj,jl) / & |
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| 440 | nlay_i |
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| 441 | END DO !jk |
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| 442 | |
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| 443 | END DO ! jl |
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| 444 | |
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| 445 | ENDIF ! on fcor |
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| 446 | |
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| 447 | END DO |
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| 448 | END DO |
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| 449 | |
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| 450 | !-------------------------------------------------------------------- |
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| 451 | ! 3) Global ice variables for output diagnostics | |
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| 452 | !-------------------------------------------------------------------- |
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| 453 | |
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| 454 | fsbbq (:,:) = 0.e0 |
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| 455 | u_ice (:,:) = 0.e0 |
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| 456 | v_ice (:,:) = 0.e0 |
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| 457 | stress1_i(:,:) = 0.0 |
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| 458 | stress2_i(:,:) = 0.0 |
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| 459 | stress12_i(:,:) = 0.0 |
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| 460 | |
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| 461 | !-------------------------------------------------------------------- |
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| 462 | ! 4) Moments for advection |
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| 463 | !-------------------------------------------------------------------- |
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| 464 | |
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| 465 | sxopw (:,:) = 0.e0 |
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| 466 | syopw (:,:) = 0.e0 |
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| 467 | sxxopw(:,:) = 0.e0 |
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| 468 | syyopw(:,:) = 0.e0 |
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| 469 | sxyopw(:,:) = 0.e0 |
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| 470 | |
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| 471 | sxice (:,:,:) = 0.e0 ; sxsn (:,:,:) = 0.e0 ; sxa (:,:,:) = 0.e0 |
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| 472 | syice (:,:,:) = 0.e0 ; sysn (:,:,:) = 0.e0 ; sya (:,:,:) = 0.e0 |
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| 473 | sxxice(:,:,:) = 0.e0 ; sxxsn(:,:,:) = 0.e0 ; sxxa (:,:,:) = 0.e0 |
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| 474 | syyice(:,:,:) = 0.e0 ; syysn(:,:,:) = 0.e0 ; syya (:,:,:) = 0.e0 |
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| 475 | sxyice(:,:,:) = 0.e0 ; sxysn(:,:,:) = 0.e0 ; sxya (:,:,:) = 0.e0 |
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| 476 | |
---|
| 477 | sxc0 (:,:,:) = 0.e0 ; sxe (:,:,:,:)= 0.e0 |
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| 478 | syc0 (:,:,:) = 0.e0 ; sye (:,:,:,:)= 0.e0 |
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| 479 | sxxc0 (:,:,:) = 0.e0 ; sxxe (:,:,:,:)= 0.e0 |
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| 480 | syyc0 (:,:,:) = 0.e0 ; syye (:,:,:,:)= 0.e0 |
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| 481 | sxyc0 (:,:,:) = 0.e0 ; sxye (:,:,:,:)= 0.e0 |
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| 482 | |
---|
| 483 | sxsal (:,:,:) = 0.e0 |
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| 484 | sysal (:,:,:) = 0.e0 |
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| 485 | sxxsal (:,:,:) = 0.e0 |
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| 486 | syysal (:,:,:) = 0.e0 |
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| 487 | sxysal (:,:,:) = 0.e0 |
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| 488 | |
---|
| 489 | !-------------------------------------------------------------------- |
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| 490 | ! 5) Lateral boundary conditions | |
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| 491 | !-------------------------------------------------------------------- |
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| 492 | |
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| 493 | DO jl = 1, jpl |
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| 494 | CALL lbc_lnk( a_i(:,:,jl) , 'T', 1. ) |
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| 495 | CALL lbc_lnk( v_i(:,:,jl) , 'T', 1. ) |
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| 496 | CALL lbc_lnk( v_s(:,:,jl) , 'T', 1. ) |
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| 497 | CALL lbc_lnk( smv_i(:,:,jl), 'T', 1. ) |
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| 498 | CALL lbc_lnk( oa_i(:,:,jl) , 'T', 1. ) |
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| 499 | ! |
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| 500 | CALL lbc_lnk( ht_i(:,:,jl) , 'T', 1. ) |
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| 501 | CALL lbc_lnk( ht_s(:,:,jl) , 'T', 1. ) |
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| 502 | CALL lbc_lnk( sm_i(:,:,jl) , 'T', 1. ) |
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| 503 | CALL lbc_lnk( o_i(:,:,jl) , 'T', 1. ) |
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| 504 | CALL lbc_lnk( t_su(:,:,jl) , 'T', 1. ) |
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| 505 | DO jk = 1, nlay_s |
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| 506 | CALL lbc_lnk(t_s(:,:,jk,jl), 'T', 1. ) |
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| 507 | CALL lbc_lnk(e_s(:,:,jk,jl), 'T', 1. ) |
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| 508 | END DO |
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| 509 | DO jk = 1, nlay_i |
---|
| 510 | CALL lbc_lnk(t_i(:,:,jk,jl), 'T', 1. ) |
---|
| 511 | CALL lbc_lnk(e_i(:,:,jk,jl), 'T', 1. ) |
---|
| 512 | END DO |
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| 513 | ! |
---|
| 514 | a_i(:,:,jl) = tms(:,:) * a_i(:,:,jl) |
---|
| 515 | END DO |
---|
| 516 | |
---|
| 517 | at_i (:,:) = 0.0_wp |
---|
| 518 | DO jl = 1, jpl |
---|
| 519 | at_i (:,:) = at_i (:,:) + a_i (:,:,jl) |
---|
| 520 | END DO |
---|
| 521 | |
---|
| 522 | CALL lbc_lnk( at_i , 'T', 1. ) |
---|
| 523 | at_i(:,:) = tms(:,:) * at_i(:,:) ! put 0 over land |
---|
| 524 | ! |
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| 525 | CALL lbc_lnk( fsbbq , 'T', 1. ) |
---|
| 526 | ! |
---|
| 527 | CALL wrk_dealloc( jpm, zgfactorn, zgfactors, zhin, zhis ) |
---|
| 528 | CALL wrk_dealloc( jpi, jpj, zidto ) |
---|
| 529 | ! |
---|
| 530 | !-------------------------------------------------------------------- |
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| 531 | ! 6) ???? | |
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| 532 | !-------------------------------------------------------------------- |
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| 533 | tn_ice (:,:,:) = t_su (:,:,:) |
---|
| 534 | ! |
---|
| 535 | END SUBROUTINE lim_istate |
---|
| 536 | |
---|
| 537 | |
---|
| 538 | SUBROUTINE lim_istate_init |
---|
| 539 | !!------------------------------------------------------------------- |
---|
| 540 | !! *** ROUTINE lim_istate_init *** |
---|
| 541 | !! |
---|
| 542 | !! ** Purpose : Definition of initial state of the ice |
---|
| 543 | !! |
---|
| 544 | !! ** Method : Read the namiceini namelist and check the parameter |
---|
| 545 | !! values called at the first timestep (nit000) |
---|
| 546 | !! |
---|
| 547 | !! ** input : namelist namiceini |
---|
| 548 | !!----------------------------------------------------------------------------- |
---|
| 549 | NAMELIST/namiceini/ ttest, hninn, hginn_u, aginn_u, hginn_d, aginn_d, hnins, & |
---|
| 550 | & hgins_u, agins_u, hgins_d, agins_d, sinn, sins |
---|
| 551 | !!----------------------------------------------------------------------------- |
---|
| 552 | ! |
---|
| 553 | REWIND ( numnam_ice ) ! Read Namelist namiceini |
---|
| 554 | READ ( numnam_ice , namiceini ) |
---|
| 555 | ! |
---|
| 556 | IF(lwp) THEN ! control print |
---|
| 557 | WRITE(numout,*) |
---|
| 558 | WRITE(numout,*) 'lim_istate_init : ice parameters inititialisation ' |
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| 559 | WRITE(numout,*) '~~~~~~~~~~~~~~~' |
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| 560 | WRITE(numout,*) ' threshold water temp. for initial sea-ice ttest = ', ttest |
---|
| 561 | WRITE(numout,*) ' initial snow thickness in the north hninn = ', hninn |
---|
| 562 | WRITE(numout,*) ' initial undef ice thickness in the north hginn_u = ', hginn_u |
---|
| 563 | WRITE(numout,*) ' initial undef ice concentr. in the north aginn_u = ', aginn_u |
---|
| 564 | WRITE(numout,*) ' initial def ice thickness in the north hginn_d = ', hginn_d |
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| 565 | WRITE(numout,*) ' initial def ice concentr. in the north aginn_d = ', aginn_d |
---|
| 566 | WRITE(numout,*) ' initial snow thickness in the south hnins = ', hnins |
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| 567 | WRITE(numout,*) ' initial undef ice thickness in the north hgins_u = ', hgins_u |
---|
| 568 | WRITE(numout,*) ' initial undef ice concentr. in the north agins_u = ', agins_u |
---|
| 569 | WRITE(numout,*) ' initial def ice thickness in the north hgins_d = ', hgins_d |
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| 570 | WRITE(numout,*) ' initial def ice concentr. in the north agins_d = ', agins_d |
---|
| 571 | WRITE(numout,*) ' initial ice salinity in the north sinn = ', sinn |
---|
| 572 | WRITE(numout,*) ' initial ice salinity in the south sins = ', sins |
---|
| 573 | ENDIF |
---|
| 574 | ! |
---|
| 575 | END SUBROUTINE lim_istate_init |
---|
| 576 | |
---|
| 577 | #else |
---|
| 578 | !!---------------------------------------------------------------------- |
---|
| 579 | !! Default option : Empty module NO LIM sea-ice model |
---|
| 580 | !!---------------------------------------------------------------------- |
---|
| 581 | CONTAINS |
---|
| 582 | SUBROUTINE lim_istate ! Empty routine |
---|
| 583 | END SUBROUTINE lim_istate |
---|
| 584 | #endif |
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| 585 | |
---|
| 586 | !!====================================================================== |
---|
| 587 | END MODULE limistate |
---|