[825] | 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 | #if defined key_lim3 |
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| 7 | !!---------------------------------------------------------------------- |
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[834] | 8 | !! 'key_lim3' : LIM3 sea-ice model |
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[825] | 9 | !!---------------------------------------------------------------------- |
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| 10 | !! lim_istate : Initialisation of diagnostics ice variables |
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| 11 | !! lim_istate_init : initialization of ice state and namelist read |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! * Modules used |
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| 14 | USE phycst |
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| 15 | USE oce ! dynamics and tracers variables |
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| 16 | USE dom_oce |
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[888] | 17 | USE sbc_oce ! Surface boundary condition: ocean fields |
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[825] | 18 | USE par_ice ! ice parameters |
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| 19 | USE ice_oce ! ice variables |
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[1037] | 20 | USE eosbn2 ! equation of state |
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[825] | 21 | USE in_out_manager |
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| 22 | USE dom_ice |
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| 23 | USE ice |
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| 24 | USE lbclnk |
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| 25 | |
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| 26 | IMPLICIT NONE |
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| 27 | PRIVATE |
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| 28 | |
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| 29 | !! * Accessibility |
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| 30 | PUBLIC lim_istate ! routine called by lim_init.F90 |
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| 31 | |
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| 32 | !! * Module variables |
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| 33 | REAL(wp) :: & !!! ** init namelist (namiceini) ** |
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| 34 | ttest = 2.0 , & ! threshold water temperature for initial sea ice |
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| 35 | hninn = 0.5 , & ! initial snow thickness in the north |
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| 36 | hginn_u = 2.5 , & ! initial ice thickness in the north |
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| 37 | aginn_u = 0.7 , & ! initial leads area in the north |
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| 38 | hginn_d = 5.0 , & ! initial ice thickness in the north |
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| 39 | aginn_d = 0.25 , & ! initial leads area in the north |
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| 40 | hnins = 0.1 , & ! initial snow thickness in the south |
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| 41 | hgins_u = 1.0 , & ! initial ice thickness in the south |
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| 42 | agins_u = 0.7 , & ! initial leads area in the south |
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| 43 | hgins_d = 2.0 , & ! initial ice thickness in the south |
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| 44 | agins_d = 0.2 , & ! initial leads area in the south |
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| 45 | sinn = 6.301 , & ! initial salinity |
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| 46 | sins = 6.301 |
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| 47 | |
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| 48 | REAL(wp) :: & ! constant values |
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| 49 | zzero = 0.0 , & |
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| 50 | zone = 1.0 |
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| 51 | |
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| 52 | !!---------------------------------------------------------------------- |
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| 53 | !! LIM 2.0, UCL-LOCEAN-IPSL (2005) |
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[888] | 54 | !! $ Id: $ |
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| 55 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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[825] | 56 | !!---------------------------------------------------------------------- |
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| 57 | |
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| 58 | CONTAINS |
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| 59 | |
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| 60 | SUBROUTINE lim_istate |
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| 61 | !!------------------------------------------------------------------- |
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| 62 | !! *** ROUTINE lim_istate *** |
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| 63 | !! |
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| 64 | !! ** Purpose : defined the sea-ice initial state |
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| 65 | !! |
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| 66 | !! ** Method : restart from a state defined in a binary file |
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| 67 | !! or from arbitrary sea-ice conditions |
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| 68 | !! |
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| 69 | !! History : |
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| 70 | !! 2.0 ! 01-04 (C. Ethe, G. Madec) Original code |
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| 71 | !!-------------------------------------------------------------------- |
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| 72 | |
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| 73 | !! * Local variables |
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[834] | 74 | INTEGER :: ji, jj, jk, jl ! dummy loop indices |
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[825] | 75 | |
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[1037] | 76 | REAL(wp) :: & ! temporary scalar |
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[825] | 77 | zeps6, zeps, ztmelts, & |
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| 78 | epsi06 |
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| 79 | REAL(wp), DIMENSION(jpm) :: & |
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| 80 | zgfactorn, zhin, & |
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| 81 | zgfactors, zhis |
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| 82 | REAL(wp) :: & |
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| 83 | zvol, zare, zh, zh1, zh2, zh3, zan, zbn, zas, zbs |
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[1037] | 84 | REAL(wp), DIMENSION(jpi,jpj) :: zidto ! ice indicator |
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[825] | 85 | !-------------------------------------------------------------------- |
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[921] | 86 | |
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[825] | 87 | !-------------------------------------------------------------------- |
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| 88 | ! 1) Preliminary things |
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| 89 | !-------------------------------------------------------------------- |
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| 90 | epsi06 = 1.0e-6 |
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| 91 | |
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| 92 | CALL lim_istate_init ! reading the initials parameters of the ice |
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| 93 | |
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[1037] | 94 | !!gm in lim2 the initialisation if only done if required in the namelist : |
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| 95 | !!gm IF( .NOT. ln_limini ) THEN |
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| 96 | !!gm this should be added in lim3 namelist... |
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[825] | 97 | |
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| 98 | !-------------------------------------------------------------------- |
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| 99 | ! 2) Ice initialization (hi,hs,frld,t_su,sm_i,t_i,t_s) | |
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| 100 | !-------------------------------------------------------------------- |
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| 101 | |
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[1037] | 102 | IF(lwp) WRITE(numout,*) |
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| 103 | IF(lwp) WRITE(numout,*) 'lim_istate : Ice initialization ' |
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| 104 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ' |
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[825] | 105 | |
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[1037] | 106 | t_bo(:,:) = tfreez( sn(:,:,1) ) * tmask(:,:,1) ! freezing/melting point of sea water [Celcius] |
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[825] | 107 | |
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[1037] | 108 | DO jj = 1, jpj ! ice if sst <= t-freez + ttest |
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| 109 | DO ji = 1, jpi |
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| 110 | IF( tn(ji,jj,1) - t_bo(ji,jj) >= ttest ) THEN ; zidto(ji,jj) = 0.e0 ! no ice |
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| 111 | ELSE ; zidto(ji,jj) = 1.e0 ! ice |
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| 112 | ENDIF |
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| 113 | END DO |
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| 114 | END DO |
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| 115 | |
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| 116 | t_bo(:,:) = t_bo(:,:) + rt0 ! t_bo converted from Celsius to Kelvin (rt0 over land) |
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| 117 | |
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[825] | 118 | ! constants for heat contents |
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| 119 | zeps = 1.0d-20 |
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| 120 | zeps6 = 1.0d-06 |
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| 121 | |
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| 122 | ! zgfactor for initial ice distribution |
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| 123 | zgfactorn(:) = 0.0 |
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| 124 | zgfactors(:) = 0.0 |
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| 125 | |
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| 126 | ! first ice type |
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| 127 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) |
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| 128 | zhin (1) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 129 | zgfactorn(1) = zgfactorn(1) + exp(-(zhin(1)-hginn_u)*(zhin(1)-hginn_u)/2.0) |
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| 130 | zhis (1) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 131 | zgfactors(1) = zgfactors(1) + exp(-(zhis(1)-hgins_u)*(zhis(1)-hgins_u)/2.0) |
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| 132 | END DO ! jl |
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| 133 | zgfactorn(1) = aginn_u / zgfactorn(1) |
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| 134 | zgfactors(1) = agins_u / zgfactors(1) |
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| 135 | |
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| 136 | ! ------------- |
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| 137 | ! new distribution, polynom of second order, conserving area and volume |
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| 138 | zh1 = 0.0 |
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| 139 | zh2 = 0.0 |
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| 140 | zh3 = 0.0 |
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| 141 | DO jl = 1, jpl |
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| 142 | zh = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 143 | zh1 = zh1 + zh |
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| 144 | zh2 = zh2 + zh*zh |
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| 145 | zh3 = zh3 + zh*zh*zh |
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| 146 | END DO |
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[1037] | 147 | IF(lwp) WRITE(numout,*) ' zh1 : ', zh1 |
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| 148 | IF(lwp) WRITE(numout,*) ' zh2 : ', zh2 |
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| 149 | IF(lwp) WRITE(numout,*) ' zh3 : ', zh3 |
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[825] | 150 | |
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| 151 | zvol = aginn_u*hginn_u |
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| 152 | zare = aginn_u |
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| 153 | IF ( jpl .GE. 2 ) THEN |
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| 154 | zbn = ( zvol*zh2 - zare*zh3 ) / ( zh2*zh2 - zh1*zh3) |
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| 155 | zan = ( zare - zbn*zh1 ) / zh2 |
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| 156 | ENDIF |
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| 157 | |
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[1037] | 158 | IF(lwp) WRITE(numout,*) ' zvol: ', zvol |
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| 159 | IF(lwp) WRITE(numout,*) ' zare: ', zare |
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| 160 | IF(lwp) WRITE(numout,*) ' zbn : ', zbn |
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| 161 | IF(lwp) WRITE(numout,*) ' zan : ', zan |
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[825] | 162 | |
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| 163 | zvol = agins_u*hgins_u |
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| 164 | zare = agins_u |
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| 165 | IF ( jpl .GE. 2 ) THEN |
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| 166 | zbs = ( zvol*zh2 - zare*zh3 ) / ( zh2*zh2 - zh1*zh3) |
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| 167 | zas = ( zare - zbs*zh1 ) / zh2 |
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| 168 | ENDIF |
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| 169 | |
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[1037] | 170 | IF(lwp) WRITE(numout,*) ' zvol: ', zvol |
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| 171 | IF(lwp) WRITE(numout,*) ' zare: ', zare |
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| 172 | IF(lwp) WRITE(numout,*) ' zbn : ', zbn |
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| 173 | IF(lwp) WRITE(numout,*) ' zan : ', zan |
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[825] | 174 | |
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| 175 | !end of new lines |
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| 176 | ! ------------- |
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| 177 | !!! |
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[921] | 178 | ! retour a LIMA_MEC |
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| 179 | ! ! second ice type |
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| 180 | ! zdummy = hi_max(ice_cat_bounds(2,1)-1) |
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| 181 | ! hi_max(ice_cat_bounds(2,1)-1) = 0.0 |
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[825] | 182 | |
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[921] | 183 | ! ! here to change !!!! |
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| 184 | ! jm = 2 |
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| 185 | ! DO jl = ice_cat_bounds(jm,1), ice_cat_bounds(jm,2) |
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| 186 | ! zhin (2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 187 | ! zhin (2) = ( hi_max_typ(jl-ice_cat_bounds(2,1),jm ) + & |
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| 188 | ! hi_max_typ(jl-ice_cat_bounds(2,1) + 1,jm) ) / 2.0 |
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| 189 | ! zgfactorn(2) = zgfactorn(2) + exp(-(zhin(2)-hginn_d)*(zhin(2)-hginn_d)/2.0) |
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| 190 | ! zhis (2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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| 191 | ! zhis (2) = ( hi_max_typ(jl-ice_cat_bounds(2,1),jm ) + & |
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| 192 | ! hi_max_typ(jl-ice_cat_bounds(2,1) + 1,jm) ) / 2.0 |
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| 193 | ! zgfactors(2) = zgfactors(2) + exp(-(zhis(2)-hgins_d)*(zhis(2)-hgins_d)/2.0) |
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| 194 | ! END DO ! jl |
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| 195 | ! zgfactorn(2) = aginn_d / zgfactorn(2) |
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| 196 | ! zgfactors(2) = agins_d / zgfactors(2) |
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| 197 | ! hi_max(ice_cat_bounds(2,1)-1) = zdummy |
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| 198 | ! END retour a LIMA_MEC |
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[825] | 199 | !!! |
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[1037] | 200 | |
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| 201 | !!gm optimisation : loop over the ice categories inside the ji, jj loop !!! |
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| 202 | |
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[825] | 203 | DO jj = 1, jpj |
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| 204 | DO ji = 1, jpi |
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| 205 | |
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| 206 | !--- Northern hemisphere |
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| 207 | !---------------------------------------------------------------- |
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| 208 | IF( fcor(ji,jj) >= 0.e0 ) THEN |
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| 209 | |
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| 210 | !----------------------- |
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| 211 | ! Ice area / thickness |
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| 212 | !----------------------- |
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| 213 | |
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| 214 | IF ( jpl .EQ. 1) THEN ! one category |
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| 215 | |
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| 216 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) ! loop over ice thickness categories |
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[1037] | 217 | a_i(ji,jj,jl) = zidto(ji,jj) * aginn_u |
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| 218 | ht_i(ji,jj,jl) = zidto(ji,jj) * hginn_u |
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[825] | 219 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 220 | END DO |
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| 221 | |
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| 222 | ELSE ! several categories |
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| 223 | |
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| 224 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) ! loop over ice thickness categories |
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| 225 | zhin(1) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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[1037] | 226 | a_i(ji,jj,jl) = zidto(ji,jj) * MAX( zgfactorn(1) * exp(-(zhin(1)-hginn_u)* & |
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[921] | 227 | (zhin(1)-hginn_u)/2.0) , epsi06) |
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[825] | 228 | ! new line |
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[1037] | 229 | a_i(ji,jj,jl) = zidto(ji,jj) * ( zan * zhin(1) * zhin(1) + zbn * zhin(1) ) |
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| 230 | ht_i(ji,jj,jl) = zidto(ji,jj) * zhin(1) |
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[825] | 231 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 232 | END DO |
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| 233 | |
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| 234 | ENDIF |
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| 235 | |
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| 236 | |
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| 237 | !!! |
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[921] | 238 | ! retour a LIMA_MEC |
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| 239 | ! !ridged ice |
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| 240 | ! zdummy = hi_max(ice_cat_bounds(2,1)-1) |
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| 241 | ! hi_max(ice_cat_bounds(2,1)-1) = 0.0 |
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| 242 | ! DO jl = ice_cat_bounds(2,1), ice_cat_bounds(2,2) ! loop over ice thickness categories |
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| 243 | ! zhin(2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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[1037] | 244 | ! a_i(ji,jj,jl) = zidto(ji,jj) * MAX( zgfactorn(2) * exp(-(zhin(2)-hginn_d)* & |
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[921] | 245 | ! (zhin(2)-hginn_d)/2.0) , epsi06) |
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[1037] | 246 | ! ht_i(ji,jj,jl) = zidto(ji,jj) * zhin(2) |
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[921] | 247 | ! v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 248 | ! END DO |
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| 249 | ! hi_max(ice_cat_bounds(2,1)-1) = zdummy |
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[825] | 250 | |
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[921] | 251 | ! !rafted ice |
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| 252 | ! jl = 6 |
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| 253 | ! a_i(ji,jj,jl) = 0.0 |
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| 254 | ! ht_i(ji,jj,jl) = 0.0 |
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| 255 | ! v_i(ji,jj,jl) = 0.0 |
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| 256 | ! END retour a LIMA_MEC |
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[825] | 257 | !!! |
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| 258 | |
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| 259 | DO jl = 1, jpl |
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| 260 | |
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| 261 | !------------- |
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| 262 | ! Snow depth |
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| 263 | !------------- |
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[1037] | 264 | ht_s(ji,jj,jl) = zidto(ji,jj) * hninn |
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[825] | 265 | v_s(ji,jj,jl) = ht_s(ji,jj,jl)*a_i(ji,jj,jl) |
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| 266 | |
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| 267 | !--------------- |
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| 268 | ! Ice salinity |
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| 269 | !--------------- |
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[1037] | 270 | sm_i(ji,jj,jl) = zidto(ji,jj) * sinn + ( 1.0 - zidto(ji,jj) ) * 0.1 |
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[888] | 271 | smv_i(ji,jj,jl) = MIN( sm_i(ji,jj,jl) , sss_m(ji,jj) ) * v_i(ji,jj,jl) |
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[825] | 272 | |
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| 273 | !---------- |
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| 274 | ! Ice age |
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| 275 | !---------- |
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[1037] | 276 | o_i(ji,jj,jl) = zidto(ji,jj) * 1.0 + ( 1.0 - zidto(ji,jj) ) |
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[825] | 277 | oa_i(ji,jj,jl) = o_i(ji,jj,jl) * a_i(ji,jj,jl) |
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[921] | 278 | |
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[825] | 279 | !------------------------------ |
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| 280 | ! Sea ice surface temperature |
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| 281 | !------------------------------ |
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| 282 | |
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[1037] | 283 | t_su(ji,jj,jl) = zidto(ji,jj) * 270.0 + ( 1.0 - zidto(ji,jj) ) * t_bo(ji,jj) |
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[825] | 284 | |
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| 285 | !------------------------------------ |
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| 286 | ! Snow temperature and heat content |
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| 287 | !------------------------------------ |
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| 288 | |
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| 289 | DO jk = 1, nlay_s |
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[1037] | 290 | t_s(ji,jj,jk,jl) = zidto(ji,jj) * 270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
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[825] | 291 | ! Snow energy of melting |
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[1037] | 292 | e_s(ji,jk,jk,jl) = zidto(ji,jj) * rhosn * ( cpic * ( rtt - t_s(ji,jj,jk,jl) ) + lfus ) |
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[825] | 293 | ! Change dimensions |
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| 294 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) / unit_fac |
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| 295 | ! Multiply by volume, so that heat content in 10^9 Joules |
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| 296 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) * area(ji,jj) * & |
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[921] | 297 | v_s(ji,jj,jl) / nlay_s |
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[825] | 298 | END DO !jk |
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| 299 | |
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| 300 | !----------------------------------------------- |
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| 301 | ! Ice salinities, temperature and heat content |
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| 302 | !----------------------------------------------- |
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| 303 | |
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| 304 | DO jk = 1, nlay_i |
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[1037] | 305 | t_i(ji,jj,jk,jl) = zidto(ji,jj)*270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
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| 306 | s_i(ji,jj,jk,jl) = zidto(ji,jj) * sinn + ( 1.0 - zidto(ji,jj) ) * 0.1 |
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[825] | 307 | ztmelts = - tmut * s_i(ji,jj,jk,jl) + rtt !Melting temperature in K |
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[921] | 308 | |
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| 309 | ! heat content per unit volume |
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[1037] | 310 | e_i(ji,jj,jk,jl) = zidto(ji,jj) * rhoic * & |
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[921] | 311 | ( cpic * ( ztmelts - t_i(ji,jj,jk,jl) ) & |
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| 312 | + lfus * ( 1.0 - (ztmelts-rtt) / MIN((t_i(ji,jj,jk,jl)-rtt),-zeps) ) & |
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| 313 | - rcp * ( ztmelts - rtt ) & |
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| 314 | ) |
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[825] | 315 | |
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[921] | 316 | ! Correct dimensions to avoid big values |
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[825] | 317 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) / unit_fac |
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| 318 | |
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[921] | 319 | ! Mutliply by ice volume, and divide by number of layers to get heat content in 10^9 J |
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[825] | 320 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * & |
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[921] | 321 | area(ji,jj) * a_i(ji,jj,jl) * ht_i(ji,jj,jl) / & |
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| 322 | nlay_i |
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[825] | 323 | END DO ! jk |
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| 324 | |
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| 325 | END DO ! jl |
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| 326 | |
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| 327 | ELSE ! on fcor |
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| 328 | |
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[921] | 329 | !--- Southern hemisphere |
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| 330 | !---------------------------------------------------------------- |
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[825] | 331 | |
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| 332 | !----------------------- |
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| 333 | ! Ice area / thickness |
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| 334 | !----------------------- |
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| 335 | |
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| 336 | IF ( jpl .EQ. 1) THEN ! one category |
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| 337 | |
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| 338 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) ! loop over ice thickness categories |
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[1037] | 339 | a_i(ji,jj,jl) = zidto(ji,jj) * agins_u |
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| 340 | ht_i(ji,jj,jl) = zidto(ji,jj) * hgins_u |
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[825] | 341 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 342 | END DO |
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| 343 | |
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| 344 | ELSE ! several categories |
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[921] | 345 | |
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| 346 | !level ice |
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[825] | 347 | DO jl = ice_cat_bounds(1,1), ice_cat_bounds(1,2) !over thickness categories |
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| 348 | |
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| 349 | zhis(1) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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[1037] | 350 | a_i(ji,jj,jl) = zidto(ji,jj) * MAX( zgfactors(1) * exp(-(zhis(1)-hgins_u) * & |
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[921] | 351 | (zhis(1)-hgins_u)/2.0) , epsi06 ) |
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[825] | 352 | ! new line square distribution volume conserving |
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[1037] | 353 | a_i(ji,jj,jl) = zidto(ji,jj) * ( zas * zhis(1) * zhis(1) + zbs * zhis(1) ) |
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| 354 | ht_i(ji,jj,jl) = zidto(ji,jj) * zhis(1) |
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[825] | 355 | v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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[921] | 356 | |
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[825] | 357 | END DO ! jl |
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| 358 | |
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| 359 | ENDIF |
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| 360 | |
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| 361 | !!! |
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[921] | 362 | ! retour a LIMA_MEC |
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| 363 | ! !ridged ice |
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| 364 | ! zdummy = hi_max(ice_cat_bounds(2,1)-1) |
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| 365 | ! hi_max(ice_cat_bounds(2,1)-1) = 0.0 |
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| 366 | ! DO jl = ice_cat_bounds(2,1), ice_cat_bounds(2,2) !over thickness categories |
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| 367 | ! zhis(2) = ( hi_max(jl-1) + hi_max(jl) ) / 2.0 |
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[1037] | 368 | ! a_i(ji,jj,jl) = zidto(ji,jj)*MAX( zgfactors(2) & |
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| 369 | ! & * exp(-(zhis(2)-hgins_d)*(zhis(2)-hgins_d)/2.0), epsi06 ) |
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| 370 | ! ht_i(ji,jj,jl) = zidto(ji,jj) * zhis(2) |
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[921] | 371 | ! v_i(ji,jj,jl) = ht_i(ji,jj,jl)*a_i(ji,jj,jl) |
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| 372 | ! END DO |
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| 373 | ! hi_max(ice_cat_bounds(2,1)-1) = zdummy |
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[825] | 374 | |
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[921] | 375 | ! !rafted ice |
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| 376 | ! jl = 6 |
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| 377 | ! a_i(ji,jj,jl) = 0.0 |
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| 378 | ! ht_i(ji,jj,jl) = 0.0 |
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| 379 | ! v_i(ji,jj,jl) = 0.0 |
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| 380 | ! END retour a LIMA_MEC |
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[825] | 381 | !!! |
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| 382 | |
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| 383 | DO jl = 1, jpl !over thickness categories |
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| 384 | |
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| 385 | !--------------- |
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| 386 | ! Snow depth |
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| 387 | !--------------- |
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| 388 | |
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[1037] | 389 | ht_s(ji,jj,jl) = zidto(ji,jj) * hnins |
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[825] | 390 | v_s(ji,jj,jl) = ht_s(ji,jj,jl)*a_i(ji,jj,jl) |
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| 391 | |
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| 392 | !--------------- |
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| 393 | ! Ice salinity |
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| 394 | !--------------- |
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| 395 | |
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[1037] | 396 | sm_i(ji,jj,jl) = zidto(ji,jj) * sins + ( 1.0 - zidto(ji,jj) ) * 0.1 |
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[888] | 397 | smv_i(ji,jj,jl) = MIN( sm_i(ji,jj,jl) , sss_m(ji,jj) ) * v_i(ji,jj,jl) |
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[825] | 398 | |
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| 399 | !---------- |
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| 400 | ! Ice age |
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| 401 | !---------- |
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| 402 | |
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[1037] | 403 | o_i(ji,jj,jl) = zidto(ji,jj) * 1.0 + ( 1.0 - zidto(ji,jj) ) |
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[825] | 404 | oa_i(ji,jj,jl) = o_i(ji,jj,jl) * a_i(ji,jj,jl) |
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| 405 | |
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| 406 | !------------------------------ |
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| 407 | ! Sea ice surface temperature |
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| 408 | !------------------------------ |
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| 409 | |
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[1037] | 410 | t_su(ji,jj,jl) = zidto(ji,jj) * 270.0 + ( 1.0 - zidto(ji,jj) ) * t_bo(ji,jj) |
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[825] | 411 | |
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| 412 | !---------------------------------- |
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| 413 | ! Snow temperature / heat content |
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| 414 | !---------------------------------- |
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| 415 | |
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| 416 | DO jk = 1, nlay_s |
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[1037] | 417 | t_s(ji,jj,jk,jl) = zidto(ji,jj) * 270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
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[825] | 418 | ! Snow energy of melting |
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[1037] | 419 | e_s(ji,jj,jk,jl) = zidto(ji,jj) * rhosn * ( cpic * ( rtt - t_s(ji,jj,jk,jl) ) + lfus ) |
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[825] | 420 | ! Change dimensions |
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| 421 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) / unit_fac |
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| 422 | ! Multiply by volume, so that heat content in 10^9 Joules |
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| 423 | e_s(ji,jj,jk,jl) = e_s(ji,jj,jk,jl) * area(ji,jj) * & |
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[921] | 424 | v_s(ji,jj,jl) / nlay_s |
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[825] | 425 | END DO |
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| 426 | |
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| 427 | !--------------------------------------------- |
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| 428 | ! Ice temperature, salinity and heat content |
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| 429 | !--------------------------------------------- |
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| 430 | |
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| 431 | DO jk = 1, nlay_i |
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[1037] | 432 | t_i(ji,jj,jk,jl) = zidto(ji,jj)*270.00 + ( 1.0 - zidto(ji,jj) ) * rtt |
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| 433 | s_i(ji,jj,jk,jl) = zidto(ji,jj) * sins + ( 1.0 - zidto(ji,jj) ) * 0.1 |
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[825] | 434 | ztmelts = - tmut * s_i(ji,jj,jk,jl) + rtt !Melting temperature in K |
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[921] | 435 | |
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| 436 | ! heat content per unit volume |
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[1037] | 437 | e_i(ji,jj,jk,jl) = zidto(ji,jj) * rhoic * & |
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[921] | 438 | ( cpic * ( ztmelts - t_i(ji,jj,jk,jl) ) & |
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| 439 | + lfus * ( 1.0 - (ztmelts-rtt) / MIN((t_i(ji,jj,jk,jl)-rtt),-zeps) ) & |
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| 440 | - rcp * ( ztmelts - rtt ) & |
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| 441 | ) |
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[825] | 442 | |
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[921] | 443 | ! Correct dimensions to avoid big values |
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[825] | 444 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) / unit_fac |
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| 445 | |
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[921] | 446 | ! Mutliply by ice volume, and divide by number of layers to get heat content in 10^9 J |
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[825] | 447 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * & |
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[921] | 448 | area(ji,jj) * a_i(ji,jj,jl) * ht_i(ji,jj,jl) / & |
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| 449 | nlay_i |
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[825] | 450 | END DO !jk |
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| 451 | |
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| 452 | END DO ! jl |
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| 453 | |
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| 454 | ENDIF ! on fcor |
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| 455 | |
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| 456 | ENDDO |
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| 457 | ENDDO |
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| 458 | |
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| 459 | !-------------------------------------------------------------------- |
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| 460 | ! 3) Global ice variables for output diagnostics | |
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| 461 | !-------------------------------------------------------------------- |
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| 462 | |
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| 463 | fsbbq (:,:) = 0.e0 |
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| 464 | u_ice (:,:) = 0.e0 |
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| 465 | v_ice (:,:) = 0.e0 |
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| 466 | stress1_i(:,:) = 0.0 |
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| 467 | stress2_i(:,:) = 0.0 |
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| 468 | stress12_i(:,:) = 0.0 |
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| 469 | |
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| 470 | # if defined key_coupled |
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| 471 | albege(:,:) = 0.8 * tms(:,:) |
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| 472 | # endif |
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| 473 | |
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| 474 | !-------------------------------------------------------------------- |
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| 475 | ! 4) Moments for advection |
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| 476 | !-------------------------------------------------------------------- |
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| 477 | |
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| 478 | sxice (:,:,:) = 0.e0 ; sxsn (:,:,:) = 0.e0 ; sxa (:,:,:) = 0.e0 |
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| 479 | syice (:,:,:) = 0.e0 ; sysn (:,:,:) = 0.e0 ; sya (:,:,:) = 0.e0 |
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| 480 | sxxice(:,:,:) = 0.e0 ; sxxsn(:,:,:) = 0.e0 ; sxxa (:,:,:) = 0.e0 |
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| 481 | syyice(:,:,:) = 0.e0 ; syysn(:,:,:) = 0.e0 ; syya (:,:,:) = 0.e0 |
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| 482 | sxyice(:,:,:) = 0.e0 ; sxysn(:,:,:) = 0.e0 ; sxya (:,:,:) = 0.e0 |
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| 483 | |
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| 484 | sxc0 (:,:,:) = 0.e0 ; sxe (:,:,:,:)= 0.e0 |
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| 485 | syc0 (:,:,:) = 0.e0 ; sye (:,:,:,:)= 0.e0 |
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| 486 | sxxc0 (:,:,:) = 0.e0 ; sxxe (:,:,:,:)= 0.e0 |
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| 487 | syyc0 (:,:,:) = 0.e0 ; syye (:,:,:,:)= 0.e0 |
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| 488 | sxyc0 (:,:,:) = 0.e0 ; sxye (:,:,:,:)= 0.e0 |
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| 489 | |
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| 490 | sxsal (:,:,:) = 0.e0 |
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| 491 | sysal (:,:,:) = 0.e0 |
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| 492 | sxxsal (:,:,:) = 0.e0 |
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| 493 | syysal (:,:,:) = 0.e0 |
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| 494 | sxysal (:,:,:) = 0.e0 |
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| 495 | |
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| 496 | !-------------------------------------------------------------------- |
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| 497 | ! 5) Lateral boundary conditions | |
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| 498 | !-------------------------------------------------------------------- |
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| 499 | |
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| 500 | DO jl = 1, jpl |
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| 501 | |
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| 502 | CALL lbc_lnk( a_i(:,:,jl) , 'T', 1. ) |
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| 503 | CALL lbc_lnk( v_i(:,:,jl) , 'T', 1. ) |
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| 504 | CALL lbc_lnk( v_s(:,:,jl) , 'T', 1. ) |
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| 505 | CALL lbc_lnk( smv_i(:,:,jl), 'T', 1. ) |
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| 506 | CALL lbc_lnk( oa_i(:,:,jl) , 'T', 1. ) |
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| 507 | |
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| 508 | CALL lbc_lnk( ht_i(:,:,jl) , 'T', 1. ) |
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| 509 | CALL lbc_lnk( ht_s(:,:,jl) , 'T', 1. ) |
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| 510 | CALL lbc_lnk( sm_i(:,:,jl) , 'T', 1. ) |
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| 511 | CALL lbc_lnk( o_i(:,:,jl) , 'T', 1. ) |
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| 512 | CALL lbc_lnk( t_su(:,:,jl) , 'T', 1. ) |
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| 513 | DO jk = 1, nlay_s |
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| 514 | CALL lbc_lnk(t_s(:,:,jk,jl), 'T', 1. ) |
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[869] | 515 | CALL lbc_lnk(e_s(:,:,jk,jl), 'T', 1. ) |
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[825] | 516 | END DO |
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| 517 | DO jk = 1, nlay_i |
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| 518 | CALL lbc_lnk(t_i(:,:,jk,jl), 'T', 1. ) |
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| 519 | CALL lbc_lnk(e_i(:,:,jk,jl), 'T', 1. ) |
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| 520 | END DO |
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| 521 | |
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| 522 | a_i (:,:,jl) = tms(:,:) * a_i(:,:,jl) |
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| 523 | |
---|
| 524 | END DO |
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| 525 | |
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| 526 | CALL lbc_lnk( at_i , 'T', 1. ) |
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| 527 | at_i(:,:) = tms(:,:) * at_i(:,:) ! put 0 over land |
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| 528 | |
---|
| 529 | CALL lbc_lnk( fsbbq , 'T', 1. ) |
---|
| 530 | |
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| 531 | END SUBROUTINE lim_istate |
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| 532 | |
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| 533 | SUBROUTINE lim_istate_init |
---|
| 534 | !!------------------------------------------------------------------- |
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| 535 | !! *** ROUTINE lim_istate_init *** |
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| 536 | !! |
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| 537 | !! ** Purpose : Definition of initial state of the ice |
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| 538 | !! |
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| 539 | !! ** Method : Read the namiceini namelist and check the parameter |
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| 540 | !! values called at the first timestep (nit000) |
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| 541 | !! |
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| 542 | !! ** input : |
---|
| 543 | !! Namelist namiceini |
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| 544 | !! |
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| 545 | !! history : |
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| 546 | !! 8.5 ! 03-08 (C. Ethe) original code |
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| 547 | !!----------------------------------------------------------------------------- |
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| 548 | NAMELIST/namiceini/ ttest, hninn, hginn_u, aginn_u, hginn_d, aginn_d, hnins, & |
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[921] | 549 | hgins_u, agins_u, hgins_d, agins_d, sinn, sins |
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[825] | 550 | !!----------------------------------------------------------------------------- |
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| 551 | |
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| 552 | ! Define the initial parameters |
---|
| 553 | ! ------------------------- |
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| 554 | |
---|
| 555 | ! Read Namelist namiceini |
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| 556 | REWIND ( numnam_ice ) |
---|
| 557 | READ ( numnam_ice , namiceini ) |
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| 558 | IF(lwp) THEN |
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| 559 | WRITE(numout,*) |
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| 560 | WRITE(numout,*) 'lim_istate_init : ice parameters inititialisation ' |
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| 561 | WRITE(numout,*) '~~~~~~~~~~~~~~~' |
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| 562 | WRITE(numout,*) ' threshold water temp. for initial sea-ice ttest = ', ttest |
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| 563 | WRITE(numout,*) ' initial snow thickness in the north hninn = ', hninn |
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| 564 | WRITE(numout,*) ' initial undef ice thickness in the north hginn_u = ', hginn_u |
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| 565 | WRITE(numout,*) ' initial undef ice concentr. in the north aginn_u = ', aginn_u |
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| 566 | WRITE(numout,*) ' initial def ice thickness in the north hginn_d = ', hginn_d |
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| 567 | WRITE(numout,*) ' initial def ice concentr. in the north aginn_d = ', aginn_d |
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| 568 | WRITE(numout,*) ' initial snow thickness in the south hnins = ', hnins |
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| 569 | WRITE(numout,*) ' initial undef ice thickness in the north hgins_u = ', hgins_u |
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| 570 | WRITE(numout,*) ' initial undef ice concentr. in the north agins_u = ', agins_u |
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| 571 | WRITE(numout,*) ' initial def ice thickness in the north hgins_d = ', hgins_d |
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| 572 | WRITE(numout,*) ' initial def ice concentr. in the north agins_d = ', agins_d |
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| 573 | WRITE(numout,*) ' initial ice salinity in the north sinn = ', sinn |
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| 574 | WRITE(numout,*) ' initial ice salinity in the south sins = ', sins |
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| 575 | ENDIF |
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[921] | 576 | |
---|
[825] | 577 | END SUBROUTINE lim_istate_init |
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| 578 | |
---|
| 579 | #else |
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| 580 | !!---------------------------------------------------------------------- |
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| 581 | !! Default option : Empty module NO LIM sea-ice model |
---|
| 582 | !!---------------------------------------------------------------------- |
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| 583 | CONTAINS |
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| 584 | SUBROUTINE lim_istate ! Empty routine |
---|
| 585 | END SUBROUTINE lim_istate |
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| 586 | #endif |
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| 587 | |
---|
| 588 | !!====================================================================== |
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| 589 | END MODULE limistate |
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