[825] | 1 | MODULE limvar |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE limvar *** |
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| 4 | !! Different sets of ice model variables |
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| 5 | !! how to switch from one to another |
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| 6 | !! |
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| 7 | !! There are three sets of variables |
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| 8 | !! VGLO : global variables of the model |
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| 9 | !! - v_i (jpi,jpj,jpl) |
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| 10 | !! - v_s (jpi,jpj,jpl) |
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| 11 | !! - a_i (jpi,jpj,jpl) |
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| 12 | !! - t_s (jpi,jpj,jpl) |
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| 13 | !! - e_i (jpi,jpj,nlay_i,jpl) |
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| 14 | !! - smv_i(jpi,jpj,jpl) |
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| 15 | !! - oa_i (jpi,jpj,jpl) |
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| 16 | !! VEQV : equivalent variables sometimes used in the model |
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| 17 | !! - ht_i(jpi,jpj,jpl) |
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| 18 | !! - ht_s(jpi,jpj,jpl) |
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| 19 | !! - t_i (jpi,jpj,nlay_i,jpl) |
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| 20 | !! ... |
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| 21 | !! VAGG : aggregate variables, averaged/summed over all |
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| 22 | !! thickness categories |
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| 23 | !! - vt_i(jpi,jpj) |
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| 24 | !! - vt_s(jpi,jpj) |
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| 25 | !! - at_i(jpi,jpj) |
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| 26 | !! - et_s(jpi,jpj) !total snow heat content |
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| 27 | !! - et_i(jpi,jpj) !total ice thermal content |
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| 28 | !! - smt_i(jpi,jpj) !mean ice salinity |
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[7646] | 29 | !! - tm_i (jpi,jpj) !mean ice temperature |
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[825] | 30 | !!====================================================================== |
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[2715] | 31 | !! History : - ! 2006-01 (M. Vancoppenolle) Original code |
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[5123] | 32 | !! 3.4 ! 2011-02 (G. Madec) dynamical allocation |
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[2715] | 33 | !!---------------------------------------------------------------------- |
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[888] | 34 | #if defined key_lim3 |
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[825] | 35 | !!---------------------------------------------------------------------- |
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[2715] | 36 | !! 'key_lim3' LIM3 sea-ice model |
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| 37 | !!---------------------------------------------------------------------- |
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[3625] | 38 | USE par_oce ! ocean parameters |
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| 39 | USE phycst ! physical constants (ocean directory) |
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| 40 | USE sbc_oce ! Surface boundary condition: ocean fields |
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| 41 | USE ice ! ice variables |
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| 42 | USE thd_ice ! ice variables (thermodynamics) |
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| 43 | USE in_out_manager ! I/O manager |
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| 44 | USE lib_mpp ! MPP library |
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| 45 | USE wrk_nemo ! work arrays |
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| 46 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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[921] | 47 | |
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[825] | 48 | IMPLICIT NONE |
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| 49 | PRIVATE |
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| 50 | |
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[5123] | 51 | PUBLIC lim_var_agg |
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| 52 | PUBLIC lim_var_glo2eqv |
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| 53 | PUBLIC lim_var_eqv2glo |
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| 54 | PUBLIC lim_var_salprof |
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| 55 | PUBLIC lim_var_bv |
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| 56 | PUBLIC lim_var_salprof1d |
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| 57 | PUBLIC lim_var_zapsmall |
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| 58 | PUBLIC lim_var_itd |
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[825] | 59 | |
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| 60 | !!---------------------------------------------------------------------- |
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[5123] | 61 | !! NEMO/LIM3 3.5 , UCL - NEMO Consortium (2011) |
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[1156] | 62 | !! $Id$ |
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[2715] | 63 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[825] | 64 | !!---------------------------------------------------------------------- |
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| 65 | CONTAINS |
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| 66 | |
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[2715] | 67 | SUBROUTINE lim_var_agg( kn ) |
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[921] | 68 | !!------------------------------------------------------------------ |
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| 69 | !! *** ROUTINE lim_var_agg *** |
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[2715] | 70 | !! |
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| 71 | !! ** Purpose : aggregates ice-thickness-category variables to all-ice variables |
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| 72 | !! i.e. it turns VGLO into VAGG |
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[921] | 73 | !! ** Method : |
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| 74 | !! |
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| 75 | !! ** Arguments : n = 1, at_i vt_i only |
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| 76 | !! n = 2 everything |
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| 77 | !! |
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| 78 | !! note : you could add an argument when you need only at_i, vt_i |
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| 79 | !! and when you need everything |
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| 80 | !!------------------------------------------------------------------ |
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[2715] | 81 | INTEGER, INTENT( in ) :: kn ! =1 at_i & vt only ; = what is needed |
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| 82 | ! |
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| 83 | INTEGER :: ji, jj, jk, jl ! dummy loop indices |
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| 84 | !!------------------------------------------------------------------ |
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[825] | 85 | |
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[7646] | 86 | ! integrated values |
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[7753] | 87 | vt_i (:,:) = SUM( v_i, dim=3 ) |
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| 88 | vt_s (:,:) = SUM( v_s, dim=3 ) |
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| 89 | at_i (:,:) = SUM( a_i, dim=3 ) |
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| 90 | et_s(:,:) = SUM( SUM( e_s(:,:,:,:), dim=4 ), dim=3 ) |
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| 91 | et_i(:,:) = SUM( SUM( e_i(:,:,:,:), dim=4 ), dim=3 ) |
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[825] | 92 | |
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[7646] | 93 | ! open water fraction |
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[921] | 94 | DO jj = 1, jpj |
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| 95 | DO ji = 1, jpi |
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[7646] | 96 | ato_i(ji,jj) = MAX( 1._wp - at_i(ji,jj), 0._wp ) |
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[921] | 97 | END DO |
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| 98 | END DO |
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[825] | 99 | |
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[2715] | 100 | IF( kn > 1 ) THEN |
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[7646] | 101 | |
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| 102 | ! mean ice/snow thickness |
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| 103 | DO jj = 1, jpj |
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| 104 | DO ji = 1, jpi |
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| 105 | rswitch = MAX( 0._wp , SIGN( 1._wp , at_i(ji,jj) - epsi10 ) ) |
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| 106 | htm_i(ji,jj) = vt_i(ji,jj) / MAX( at_i(ji,jj) , epsi10 ) * rswitch |
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| 107 | htm_s(ji,jj) = vt_s(ji,jj) / MAX( at_i(ji,jj) , epsi10 ) * rswitch |
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| 108 | ENDDO |
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| 109 | ENDDO |
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| 110 | |
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| 111 | ! mean temperature (K), salinity and age |
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[7753] | 112 | smt_i(:,:) = 0._wp |
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| 113 | tm_i(:,:) = 0._wp |
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| 114 | tm_su(:,:) = 0._wp |
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| 115 | om_i (:,:) = 0._wp |
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[921] | 116 | DO jl = 1, jpl |
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[7646] | 117 | |
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[921] | 118 | DO jj = 1, jpj |
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| 119 | DO ji = 1, jpi |
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[7646] | 120 | rswitch = MAX( 0._wp , SIGN( 1._wp , at_i(ji,jj) - epsi10 ) ) |
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| 121 | tm_su(ji,jj) = tm_su(ji,jj) + rswitch * ( t_su(ji,jj,jl) - rt0 ) * a_i(ji,jj,jl) / MAX( at_i(ji,jj) , epsi10 ) |
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| 122 | om_i (ji,jj) = om_i (ji,jj) + rswitch * oa_i(ji,jj,jl) / MAX( at_i(ji,jj) , epsi10 ) |
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[921] | 123 | END DO |
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| 124 | END DO |
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[7646] | 125 | |
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[921] | 126 | DO jk = 1, nlay_i |
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[7646] | 127 | DO jj = 1, jpj |
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| 128 | DO ji = 1, jpi |
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| 129 | rswitch = MAX( 0._wp , SIGN( 1._wp , vt_i(ji,jj) - epsi10 ) ) |
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| 130 | tm_i(ji,jj) = tm_i(ji,jj) + r1_nlay_i * rswitch * ( t_i(ji,jj,jk,jl) - rt0 ) * v_i(ji,jj,jl) & |
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| 131 | & / MAX( vt_i(ji,jj) , epsi10 ) |
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| 132 | smt_i(ji,jj) = smt_i(ji,jj) + r1_nlay_i * rswitch * s_i(ji,jj,jk,jl) * v_i(ji,jj,jl) & |
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| 133 | & / MAX( vt_i(ji,jj) , epsi10 ) |
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| 134 | END DO |
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| 135 | END DO |
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[921] | 136 | END DO |
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| 137 | END DO |
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[7646] | 138 | tm_i = tm_i + rt0 |
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| 139 | tm_su = tm_su + rt0 |
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[2715] | 140 | ! |
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| 141 | ENDIF |
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| 142 | ! |
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[921] | 143 | END SUBROUTINE lim_var_agg |
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[825] | 144 | |
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| 145 | |
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[921] | 146 | SUBROUTINE lim_var_glo2eqv |
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| 147 | !!------------------------------------------------------------------ |
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[2715] | 148 | !! *** ROUTINE lim_var_glo2eqv *** |
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[921] | 149 | !! |
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[2715] | 150 | !! ** Purpose : computes equivalent variables as function of global variables |
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| 151 | !! i.e. it turns VGLO into VEQV |
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[921] | 152 | !!------------------------------------------------------------------ |
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[2715] | 153 | INTEGER :: ji, jj, jk, jl ! dummy loop indices |
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| 154 | REAL(wp) :: zq_i, zaaa, zbbb, zccc, zdiscrim ! local scalars |
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[4990] | 155 | REAL(wp) :: ztmelts, zq_s, zfac1, zfac2 ! - - |
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[2715] | 156 | !!------------------------------------------------------------------ |
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[825] | 157 | |
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| 158 | !------------------------------------------------------- |
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| 159 | ! Ice thickness, snow thickness, ice salinity, ice age |
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| 160 | !------------------------------------------------------- |
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| 161 | DO jl = 1, jpl |
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| 162 | DO jj = 1, jpj |
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| 163 | DO ji = 1, jpi |
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[5167] | 164 | rswitch = MAX( 0._wp , SIGN( 1._wp, a_i(ji,jj,jl) - epsi20 ) ) !0 if no ice and 1 if yes |
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| 165 | ht_i(ji,jj,jl) = v_i (ji,jj,jl) / MAX( a_i(ji,jj,jl) , epsi20 ) * rswitch |
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[6416] | 166 | END DO |
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| 167 | END DO |
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| 168 | END DO |
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| 169 | ! Force the upper limit of ht_i to always be < hi_max (99 m). |
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| 170 | DO jj = 1, jpj |
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| 171 | DO ji = 1, jpi |
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| 172 | rswitch = MAX( 0._wp , SIGN( 1._wp, ht_i(ji,jj,jpl) - epsi20 ) ) |
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| 173 | ht_i(ji,jj,jpl) = MIN( ht_i(ji,jj,jpl) , hi_max(jpl) ) |
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| 174 | a_i (ji,jj,jpl) = v_i(ji,jj,jpl) / MAX( ht_i(ji,jj,jpl) , epsi20 ) * rswitch |
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| 175 | END DO |
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| 176 | END DO |
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| 177 | |
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| 178 | DO jl = 1, jpl |
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| 179 | DO jj = 1, jpj |
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| 180 | DO ji = 1, jpi |
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| 181 | rswitch = MAX( 0._wp , SIGN( 1._wp, a_i(ji,jj,jl) - epsi20 ) ) !0 if no ice and 1 if yes |
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[5167] | 182 | ht_s(ji,jj,jl) = v_s (ji,jj,jl) / MAX( a_i(ji,jj,jl) , epsi20 ) * rswitch |
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| 183 | o_i(ji,jj,jl) = oa_i(ji,jj,jl) / MAX( a_i(ji,jj,jl) , epsi20 ) * rswitch |
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[825] | 184 | END DO |
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| 185 | END DO |
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| 186 | END DO |
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[6416] | 187 | |
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[5123] | 188 | IF( nn_icesal == 2 )THEN |
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[921] | 189 | DO jl = 1, jpl |
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| 190 | DO jj = 1, jpj |
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| 191 | DO ji = 1, jpi |
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[5167] | 192 | rswitch = MAX( 0._wp , SIGN( 1._wp, v_i(ji,jj,jl) - epsi20 ) ) !0 if no ice and 1 if yes |
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| 193 | sm_i(ji,jj,jl) = smv_i(ji,jj,jl) / MAX( v_i(ji,jj,jl) , epsi20 ) * rswitch |
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[5202] | 194 | ! ! bounding salinity |
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| 195 | sm_i(ji,jj,jl) = MAX( sm_i(ji,jj,jl), rn_simin ) |
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[921] | 196 | END DO |
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[825] | 197 | END DO |
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| 198 | END DO |
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| 199 | ENDIF |
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| 200 | |
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[2715] | 201 | CALL lim_var_salprof ! salinity profile |
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[825] | 202 | |
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| 203 | !------------------- |
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| 204 | ! Ice temperatures |
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| 205 | !------------------- |
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| 206 | DO jl = 1, jpl |
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[921] | 207 | DO jk = 1, nlay_i |
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| 208 | DO jj = 1, jpj |
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| 209 | DO ji = 1, jpi |
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[2715] | 210 | ! ! Energy of melting q(S,T) [J.m-3] |
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[5134] | 211 | rswitch = MAX( 0.0 , SIGN( 1.0 , v_i(ji,jj,jl) - epsi20 ) ) ! rswitch = 0 if no ice and 1 if yes |
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[5123] | 212 | zq_i = rswitch * e_i(ji,jj,jk,jl) / MAX( v_i(ji,jj,jl) , epsi20 ) * REAL(nlay_i,wp) |
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| 213 | ztmelts = -tmut * s_i(ji,jj,jk,jl) + rt0 ! Ice layer melt temperature |
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[2715] | 214 | ! |
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| 215 | zaaa = cpic ! Conversion q(S,T) -> T (second order equation) |
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[5123] | 216 | zbbb = ( rcp - cpic ) * ( ztmelts - rt0 ) + zq_i * r1_rhoic - lfus |
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| 217 | zccc = lfus * (ztmelts-rt0) |
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[2715] | 218 | zdiscrim = SQRT( MAX(zbbb*zbbb - 4._wp*zaaa*zccc , 0._wp) ) |
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[5123] | 219 | t_i(ji,jj,jk,jl) = rt0 + rswitch *( - zbbb - zdiscrim ) / ( 2.0 *zaaa ) |
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[5202] | 220 | t_i(ji,jj,jk,jl) = MIN( ztmelts, MAX( rt0 - 100._wp, t_i(ji,jj,jk,jl) ) ) ! -100 < t_i < ztmelts |
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[921] | 221 | END DO |
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[825] | 222 | END DO |
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[921] | 223 | END DO |
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[825] | 224 | END DO |
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| 225 | |
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| 226 | !-------------------- |
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| 227 | ! Snow temperatures |
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| 228 | !-------------------- |
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[2715] | 229 | zfac1 = 1._wp / ( rhosn * cpic ) |
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[825] | 230 | zfac2 = lfus / cpic |
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| 231 | DO jl = 1, jpl |
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[921] | 232 | DO jk = 1, nlay_s |
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| 233 | DO jj = 1, jpj |
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| 234 | DO ji = 1, jpi |
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| 235 | !Energy of melting q(S,T) [J.m-3] |
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[5134] | 236 | rswitch = MAX( 0._wp , SIGN( 1._wp , v_s(ji,jj,jl) - epsi20 ) ) ! rswitch = 0 if no ice and 1 if yes |
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[5123] | 237 | zq_s = rswitch * e_s(ji,jj,jk,jl) / MAX( v_s(ji,jj,jl) , epsi20 ) * REAL(nlay_s,wp) |
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[2715] | 238 | ! |
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[5123] | 239 | t_s(ji,jj,jk,jl) = rt0 + rswitch * ( - zfac1 * zq_s + zfac2 ) |
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[5202] | 240 | t_s(ji,jj,jk,jl) = MIN( rt0, MAX( rt0 - 100._wp , t_s(ji,jj,jk,jl) ) ) ! -100 < t_s < rt0 |
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[921] | 241 | END DO |
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[825] | 242 | END DO |
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[921] | 243 | END DO |
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[825] | 244 | END DO |
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| 245 | |
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[7646] | 246 | ! integrated values |
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[7753] | 247 | vt_i (:,:) = SUM( v_i, dim=3 ) |
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| 248 | vt_s (:,:) = SUM( v_s, dim=3 ) |
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| 249 | at_i (:,:) = SUM( a_i, dim=3 ) |
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| 250 | |
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[2715] | 251 | ! |
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[825] | 252 | END SUBROUTINE lim_var_glo2eqv |
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| 253 | |
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| 254 | |
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| 255 | SUBROUTINE lim_var_eqv2glo |
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[921] | 256 | !!------------------------------------------------------------------ |
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[2715] | 257 | !! *** ROUTINE lim_var_eqv2glo *** |
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| 258 | !! |
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| 259 | !! ** Purpose : computes global variables as function of equivalent variables |
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| 260 | !! i.e. it turns VEQV into VGLO |
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[921] | 261 | !! ** Method : |
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| 262 | !! |
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[2715] | 263 | !! ** History : (01-2006) Martin Vancoppenolle, UCL-ASTR |
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[921] | 264 | !!------------------------------------------------------------------ |
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[2715] | 265 | ! |
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[921] | 266 | v_i(:,:,:) = ht_i(:,:,:) * a_i(:,:,:) |
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| 267 | v_s(:,:,:) = ht_s(:,:,:) * a_i(:,:,:) |
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| 268 | smv_i(:,:,:) = sm_i(:,:,:) * v_i(:,:,:) |
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[2715] | 269 | ! |
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[921] | 270 | END SUBROUTINE lim_var_eqv2glo |
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[825] | 271 | |
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| 272 | |
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[921] | 273 | SUBROUTINE lim_var_salprof |
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| 274 | !!------------------------------------------------------------------ |
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[2715] | 275 | !! *** ROUTINE lim_var_salprof *** |
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[921] | 276 | !! |
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[2715] | 277 | !! ** Purpose : computes salinity profile in function of bulk salinity |
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| 278 | !! |
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[5123] | 279 | !! ** Method : If bulk salinity greater than zsi1, |
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[921] | 280 | !! the profile is assumed to be constant (S_inf) |
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[5123] | 281 | !! If bulk salinity lower than zsi0, |
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[921] | 282 | !! the profile is linear with 0 at the surface (S_zero) |
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[5123] | 283 | !! If it is between zsi0 and zsi1, it is a |
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[921] | 284 | !! alpha-weighted linear combination of s_inf and s_zero |
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| 285 | !! |
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[5123] | 286 | !! ** References : Vancoppenolle et al., 2007 |
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[921] | 287 | !!------------------------------------------------------------------ |
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[2715] | 288 | INTEGER :: ji, jj, jk, jl ! dummy loop index |
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[5123] | 289 | REAL(wp) :: zfac0, zfac1, zsal |
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| 290 | REAL(wp) :: zswi0, zswi01, zargtemp , zs_zero |
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| 291 | REAL(wp), POINTER, DIMENSION(:,:,:) :: z_slope_s, zalpha |
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| 292 | REAL(wp), PARAMETER :: zsi0 = 3.5_wp |
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| 293 | REAL(wp), PARAMETER :: zsi1 = 4.5_wp |
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[2715] | 294 | !!------------------------------------------------------------------ |
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[825] | 295 | |
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[3294] | 296 | CALL wrk_alloc( jpi, jpj, jpl, z_slope_s, zalpha ) |
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[825] | 297 | |
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| 298 | !--------------------------------------- |
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| 299 | ! Vertically constant, constant in time |
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| 300 | !--------------------------------------- |
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[6470] | 301 | IF( nn_icesal == 1 ) THEN |
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[7753] | 302 | s_i (:,:,:,:) = rn_icesal |
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| 303 | sm_i(:,:,:) = rn_icesal |
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[6470] | 304 | ENDIF |
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[825] | 305 | |
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| 306 | !----------------------------------- |
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| 307 | ! Salinity profile, varying in time |
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| 308 | !----------------------------------- |
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[5123] | 309 | IF( nn_icesal == 2 ) THEN |
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[2715] | 310 | ! |
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[7753] | 311 | DO jk = 1, nlay_i |
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| 312 | s_i(:,:,jk,:) = sm_i(:,:,:) |
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[2715] | 313 | END DO |
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| 314 | ! |
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| 315 | DO jl = 1, jpl ! Slope of the linear profile |
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[825] | 316 | DO jj = 1, jpj |
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| 317 | DO ji = 1, jpi |
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[5167] | 318 | rswitch = MAX( 0._wp , SIGN( 1._wp , ht_i(ji,jj,jl) - epsi20 ) ) |
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| 319 | z_slope_s(ji,jj,jl) = rswitch * 2._wp * sm_i(ji,jj,jl) / MAX( epsi20 , ht_i(ji,jj,jl) ) |
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[2715] | 320 | END DO |
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| 321 | END DO |
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| 322 | END DO |
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| 323 | ! |
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[5123] | 324 | zfac0 = 1._wp / ( zsi0 - zsi1 ) ! Weighting factor between zs_zero and zs_inf |
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| 325 | zfac1 = zsi1 / ( zsi1 - zsi0 ) |
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[3625] | 326 | ! |
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[7753] | 327 | zalpha(:,:,:) = 0._wp |
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[825] | 328 | DO jl = 1, jpl |
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| 329 | DO jj = 1, jpj |
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| 330 | DO ji = 1, jpi |
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[5123] | 331 | ! zswi0 = 1 if sm_i le zsi0 and 0 otherwise |
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| 332 | zswi0 = MAX( 0._wp , SIGN( 1._wp , zsi0 - sm_i(ji,jj,jl) ) ) |
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| 333 | ! zswi01 = 1 if sm_i is between zsi0 and zsi1 and 0 othws |
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| 334 | zswi01 = ( 1._wp - zswi0 ) * MAX( 0._wp , SIGN( 1._wp , zsi1 - sm_i(ji,jj,jl) ) ) |
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| 335 | ! If 2.sm_i GE sss_m then rswitch = 1 |
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[4333] | 336 | ! this is to force a constant salinity profile in the Baltic Sea |
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[5123] | 337 | rswitch = MAX( 0._wp , SIGN( 1._wp , 2._wp * sm_i(ji,jj,jl) - sss_m(ji,jj) ) ) |
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| 338 | zalpha(ji,jj,jl) = zswi0 + zswi01 * ( sm_i(ji,jj,jl) * zfac0 + zfac1 ) |
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| 339 | zalpha(ji,jj,jl) = zalpha(ji,jj,jl) * ( 1._wp - rswitch ) |
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[825] | 340 | END DO |
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| 341 | END DO |
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| 342 | END DO |
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[4161] | 343 | |
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[5123] | 344 | ! Computation of the profile |
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[825] | 345 | DO jl = 1, jpl |
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| 346 | DO jk = 1, nlay_i |
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| 347 | DO jj = 1, jpj |
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| 348 | DO ji = 1, jpi |
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[2715] | 349 | ! ! linear profile with 0 at the surface |
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[5123] | 350 | zs_zero = z_slope_s(ji,jj,jl) * ( REAL(jk,wp) - 0.5_wp ) * ht_i(ji,jj,jl) * r1_nlay_i |
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[2715] | 351 | ! ! weighting the profile |
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| 352 | s_i(ji,jj,jk,jl) = zalpha(ji,jj,jl) * zs_zero + ( 1._wp - zalpha(ji,jj,jl) ) * sm_i(ji,jj,jl) |
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[5202] | 353 | ! ! bounding salinity |
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| 354 | s_i(ji,jj,jk,jl) = MIN( rn_simax, MAX( s_i(ji,jj,jk,jl), rn_simin ) ) |
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[5134] | 355 | END DO |
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| 356 | END DO |
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| 357 | END DO |
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| 358 | END DO |
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[3625] | 359 | ! |
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[5123] | 360 | ENDIF ! nn_icesal |
---|
[825] | 361 | |
---|
| 362 | !------------------------------------------------------- |
---|
| 363 | ! Vertically varying salinity profile, constant in time |
---|
| 364 | !------------------------------------------------------- |
---|
[921] | 365 | |
---|
[5123] | 366 | IF( nn_icesal == 3 ) THEN ! Schwarzacher (1959) multiyear salinity profile (mean = 2.30) |
---|
[2715] | 367 | ! |
---|
[7753] | 368 | sm_i(:,:,:) = 2.30_wp |
---|
[2715] | 369 | ! |
---|
[825] | 370 | DO jl = 1, jpl |
---|
| 371 | DO jk = 1, nlay_i |
---|
[5123] | 372 | zargtemp = ( REAL(jk,wp) - 0.5_wp ) * r1_nlay_i |
---|
[2715] | 373 | zsal = 1.6_wp * ( 1._wp - COS( rpi * zargtemp**(0.407_wp/(0.573_wp+zargtemp)) ) ) |
---|
[7753] | 374 | s_i(:,:,jk,jl) = zsal |
---|
[2715] | 375 | END DO |
---|
| 376 | END DO |
---|
[3625] | 377 | ! |
---|
[5123] | 378 | ENDIF ! nn_icesal |
---|
[2715] | 379 | ! |
---|
[3294] | 380 | CALL wrk_dealloc( jpi, jpj, jpl, z_slope_s, zalpha ) |
---|
[2715] | 381 | ! |
---|
[825] | 382 | END SUBROUTINE lim_var_salprof |
---|
| 383 | |
---|
| 384 | |
---|
| 385 | SUBROUTINE lim_var_bv |
---|
[921] | 386 | !!------------------------------------------------------------------ |
---|
[2715] | 387 | !! *** ROUTINE lim_var_bv *** |
---|
[921] | 388 | !! |
---|
[2715] | 389 | !! ** Purpose : computes mean brine volume (%) in sea ice |
---|
| 390 | !! |
---|
[921] | 391 | !! ** Method : e = - 0.054 * S (ppt) / T (C) |
---|
| 392 | !! |
---|
[2715] | 393 | !! References : Vancoppenolle et al., JGR, 2007 |
---|
[921] | 394 | !!------------------------------------------------------------------ |
---|
[2715] | 395 | INTEGER :: ji, jj, jk, jl ! dummy loop indices |
---|
| 396 | !!------------------------------------------------------------------ |
---|
| 397 | ! |
---|
[7753] | 398 | bvm_i(:,:) = 0._wp |
---|
| 399 | bv_i (:,:,:) = 0._wp |
---|
[5167] | 400 | DO jl = 1, jpl |
---|
[921] | 401 | DO jk = 1, nlay_i |
---|
| 402 | DO jj = 1, jpj |
---|
| 403 | DO ji = 1, jpi |
---|
[7646] | 404 | rswitch = ( 1._wp - MAX( 0._wp , SIGN( 1._wp , (t_i(ji,jj,jk,jl) - rt0) + epsi10 ) ) ) |
---|
| 405 | bv_i(ji,jj,jl) = bv_i(ji,jj,jl) - rswitch * tmut * s_i(ji,jj,jk,jl) * r1_nlay_i & |
---|
| 406 | & / MIN( t_i(ji,jj,jk,jl) - rt0, - epsi10 ) |
---|
[921] | 407 | END DO |
---|
| 408 | END DO |
---|
| 409 | END DO |
---|
[7646] | 410 | |
---|
| 411 | DO jj = 1, jpj |
---|
| 412 | DO ji = 1, jpi |
---|
| 413 | rswitch = MAX( 0._wp , SIGN( 1._wp , vt_i(ji,jj) - epsi10 ) ) |
---|
| 414 | bvm_i(ji,jj) = bvm_i(ji,jj) + rswitch * bv_i(ji,jj,jl) * v_i(ji,jj,jl) / MAX( vt_i(ji,jj), epsi10 ) |
---|
| 415 | END DO |
---|
| 416 | END DO |
---|
[921] | 417 | END DO |
---|
[2715] | 418 | ! |
---|
[921] | 419 | END SUBROUTINE lim_var_bv |
---|
[825] | 420 | |
---|
| 421 | |
---|
[2715] | 422 | SUBROUTINE lim_var_salprof1d( kideb, kiut ) |
---|
[825] | 423 | !!------------------------------------------------------------------- |
---|
| 424 | !! *** ROUTINE lim_thd_salprof1d *** |
---|
| 425 | !! |
---|
| 426 | !! ** Purpose : 1d computation of the sea ice salinity profile |
---|
[2715] | 427 | !! Works with 1d vectors and is used by thermodynamic modules |
---|
[825] | 428 | !!------------------------------------------------------------------- |
---|
[2715] | 429 | INTEGER, INTENT(in) :: kideb, kiut ! thickness category index |
---|
| 430 | ! |
---|
| 431 | INTEGER :: ji, jk ! dummy loop indices |
---|
[5123] | 432 | INTEGER :: ii, ij ! local integers |
---|
| 433 | REAL(wp) :: zfac0, zfac1, zargtemp, zsal ! local scalars |
---|
| 434 | REAL(wp) :: zalpha, zswi0, zswi01, zs_zero ! - - |
---|
[2715] | 435 | ! |
---|
| 436 | REAL(wp), POINTER, DIMENSION(:) :: z_slope_s |
---|
[5123] | 437 | REAL(wp), PARAMETER :: zsi0 = 3.5_wp |
---|
| 438 | REAL(wp), PARAMETER :: zsi1 = 4.5_wp |
---|
[2715] | 439 | !!--------------------------------------------------------------------- |
---|
[825] | 440 | |
---|
[3294] | 441 | CALL wrk_alloc( jpij, z_slope_s ) |
---|
[825] | 442 | |
---|
| 443 | !--------------------------------------- |
---|
| 444 | ! Vertically constant, constant in time |
---|
| 445 | !--------------------------------------- |
---|
[5123] | 446 | IF( nn_icesal == 1 ) s_i_1d(:,:) = rn_icesal |
---|
[825] | 447 | |
---|
| 448 | !------------------------------------------------------ |
---|
| 449 | ! Vertically varying salinity profile, varying in time |
---|
| 450 | !------------------------------------------------------ |
---|
| 451 | |
---|
[5123] | 452 | IF( nn_icesal == 2 ) THEN |
---|
[2715] | 453 | ! |
---|
| 454 | DO ji = kideb, kiut ! Slope of the linear profile zs_zero |
---|
[5167] | 455 | rswitch = MAX( 0._wp , SIGN( 1._wp , ht_i_1d(ji) - epsi20 ) ) |
---|
| 456 | z_slope_s(ji) = rswitch * 2._wp * sm_i_1d(ji) / MAX( epsi20 , ht_i_1d(ji) ) |
---|
[2715] | 457 | END DO |
---|
[825] | 458 | |
---|
| 459 | ! Weighting factor between zs_zero and zs_inf |
---|
| 460 | !--------------------------------------------- |
---|
[5123] | 461 | zfac0 = 1._wp / ( zsi0 - zsi1 ) |
---|
| 462 | zfac1 = zsi1 / ( zsi1 - zsi0 ) |
---|
[825] | 463 | DO jk = 1, nlay_i |
---|
| 464 | DO ji = kideb, kiut |
---|
[4161] | 465 | ii = MOD( npb(ji) - 1 , jpi ) + 1 |
---|
| 466 | ij = ( npb(ji) - 1 ) / jpi + 1 |
---|
[5123] | 467 | ! zswi0 = 1 if sm_i le zsi0 and 0 otherwise |
---|
| 468 | zswi0 = MAX( 0._wp , SIGN( 1._wp , zsi0 - sm_i_1d(ji) ) ) |
---|
| 469 | ! zswi01 = 1 if sm_i is between zsi0 and zsi1 and 0 othws |
---|
| 470 | zswi01 = ( 1._wp - zswi0 ) * MAX( 0._wp , SIGN( 1._wp , zsi1 - sm_i_1d(ji) ) ) |
---|
| 471 | ! if 2.sm_i GE sss_m then rswitch = 1 |
---|
[4333] | 472 | ! this is to force a constant salinity profile in the Baltic Sea |
---|
[5123] | 473 | rswitch = MAX( 0._wp , SIGN( 1._wp , 2._wp * sm_i_1d(ji) - sss_m(ii,ij) ) ) |
---|
[2715] | 474 | ! |
---|
[5123] | 475 | zalpha = ( zswi0 + zswi01 * ( sm_i_1d(ji) * zfac0 + zfac1 ) ) * ( 1._wp - rswitch ) |
---|
[2715] | 476 | ! |
---|
[5123] | 477 | zs_zero = z_slope_s(ji) * ( REAL(jk,wp) - 0.5_wp ) * ht_i_1d(ji) * r1_nlay_i |
---|
[825] | 478 | ! weighting the profile |
---|
[4872] | 479 | s_i_1d(ji,jk) = zalpha * zs_zero + ( 1._wp - zalpha ) * sm_i_1d(ji) |
---|
[5202] | 480 | ! bounding salinity |
---|
| 481 | s_i_1d(ji,jk) = MIN( rn_simax, MAX( s_i_1d(ji,jk), rn_simin ) ) |
---|
[5123] | 482 | END DO |
---|
| 483 | END DO |
---|
[825] | 484 | |
---|
[5123] | 485 | ENDIF |
---|
[825] | 486 | |
---|
| 487 | !------------------------------------------------------- |
---|
| 488 | ! Vertically varying salinity profile, constant in time |
---|
| 489 | !------------------------------------------------------- |
---|
| 490 | |
---|
[5123] | 491 | IF( nn_icesal == 3 ) THEN ! Schwarzacher (1959) multiyear salinity profile (mean = 2.30) |
---|
[2715] | 492 | ! |
---|
[4872] | 493 | sm_i_1d(:) = 2.30_wp |
---|
[2715] | 494 | ! |
---|
| 495 | DO jk = 1, nlay_i |
---|
[5123] | 496 | zargtemp = ( REAL(jk,wp) - 0.5_wp ) * r1_nlay_i |
---|
| 497 | zsal = 1.6_wp * ( 1._wp - COS( rpi * zargtemp**( 0.407_wp / ( 0.573_wp + zargtemp ) ) ) ) |
---|
[2715] | 498 | DO ji = kideb, kiut |
---|
[4872] | 499 | s_i_1d(ji,jk) = zsal |
---|
[2715] | 500 | END DO |
---|
| 501 | END DO |
---|
| 502 | ! |
---|
| 503 | ENDIF |
---|
| 504 | ! |
---|
[3294] | 505 | CALL wrk_dealloc( jpij, z_slope_s ) |
---|
[2715] | 506 | ! |
---|
[825] | 507 | END SUBROUTINE lim_var_salprof1d |
---|
| 508 | |
---|
[5123] | 509 | SUBROUTINE lim_var_zapsmall |
---|
| 510 | !!------------------------------------------------------------------- |
---|
| 511 | !! *** ROUTINE lim_var_zapsmall *** |
---|
| 512 | !! |
---|
| 513 | !! ** Purpose : Remove too small sea ice areas and correct fluxes |
---|
| 514 | !! |
---|
| 515 | !! history : LIM3.5 - 01-2014 (C. Rousset) original code |
---|
| 516 | !!------------------------------------------------------------------- |
---|
| 517 | INTEGER :: ji, jj, jl, jk ! dummy loop indices |
---|
| 518 | REAL(wp) :: zsal, zvi, zvs, zei, zes |
---|
| 519 | !!------------------------------------------------------------------- |
---|
[7753] | 520 | at_i (:,:) = 0._wp |
---|
[5123] | 521 | DO jl = 1, jpl |
---|
[7753] | 522 | at_i(:,:) = at_i(:,:) + a_i(:,:,jl) |
---|
[5123] | 523 | END DO |
---|
| 524 | |
---|
| 525 | DO jl = 1, jpl |
---|
| 526 | |
---|
| 527 | !----------------------------------------------------------------- |
---|
| 528 | ! Zap ice energy and use ocean heat to melt ice |
---|
| 529 | !----------------------------------------------------------------- |
---|
| 530 | DO jk = 1, nlay_i |
---|
| 531 | DO jj = 1 , jpj |
---|
| 532 | DO ji = 1 , jpi |
---|
| 533 | rswitch = MAX( 0._wp , SIGN( 1._wp, a_i(ji,jj,jl) - epsi10 ) ) |
---|
| 534 | rswitch = MAX( 0._wp , SIGN( 1._wp, at_i(ji,jj ) - epsi10 ) ) * rswitch |
---|
[5202] | 535 | rswitch = MAX( 0._wp , SIGN( 1._wp, v_i(ji,jj,jl) - epsi10 ) ) * rswitch |
---|
| 536 | rswitch = MAX( 0._wp , SIGN( 1._wp, v_i(ji,jj,jl) * rswitch & |
---|
| 537 | & / MAX( a_i(ji,jj,jl), epsi10 ) - epsi10 ) ) * rswitch |
---|
[5123] | 538 | zei = e_i(ji,jj,jk,jl) |
---|
| 539 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * rswitch |
---|
| 540 | t_i(ji,jj,jk,jl) = t_i(ji,jj,jk,jl) * rswitch + rt0 * ( 1._wp - rswitch ) |
---|
| 541 | ! update exchanges with ocean |
---|
| 542 | hfx_res(ji,jj) = hfx_res(ji,jj) + ( e_i(ji,jj,jk,jl) - zei ) * r1_rdtice ! W.m-2 <0 |
---|
| 543 | END DO |
---|
| 544 | END DO |
---|
| 545 | END DO |
---|
| 546 | |
---|
| 547 | DO jj = 1 , jpj |
---|
| 548 | DO ji = 1 , jpi |
---|
| 549 | rswitch = MAX( 0._wp , SIGN( 1._wp, a_i(ji,jj,jl) - epsi10 ) ) |
---|
| 550 | rswitch = MAX( 0._wp , SIGN( 1._wp, at_i(ji,jj ) - epsi10 ) ) * rswitch |
---|
[5202] | 551 | rswitch = MAX( 0._wp , SIGN( 1._wp, v_i(ji,jj,jl) - epsi10 ) ) * rswitch |
---|
| 552 | rswitch = MAX( 0._wp , SIGN( 1._wp, v_i(ji,jj,jl) * rswitch & |
---|
| 553 | & / MAX( a_i(ji,jj,jl), epsi10 ) - epsi10 ) ) * rswitch |
---|
[5123] | 554 | zsal = smv_i(ji,jj, jl) |
---|
| 555 | zvi = v_i (ji,jj, jl) |
---|
| 556 | zvs = v_s (ji,jj, jl) |
---|
| 557 | zes = e_s (ji,jj,1,jl) |
---|
| 558 | !----------------------------------------------------------------- |
---|
| 559 | ! Zap snow energy |
---|
| 560 | !----------------------------------------------------------------- |
---|
| 561 | t_s(ji,jj,1,jl) = t_s(ji,jj,1,jl) * rswitch + rt0 * ( 1._wp - rswitch ) |
---|
| 562 | e_s(ji,jj,1,jl) = e_s(ji,jj,1,jl) * rswitch |
---|
| 563 | |
---|
| 564 | !----------------------------------------------------------------- |
---|
| 565 | ! zap ice and snow volume, add water and salt to ocean |
---|
| 566 | !----------------------------------------------------------------- |
---|
| 567 | ato_i(ji,jj) = a_i (ji,jj,jl) * ( 1._wp - rswitch ) + ato_i(ji,jj) |
---|
| 568 | a_i (ji,jj,jl) = a_i (ji,jj,jl) * rswitch |
---|
| 569 | v_i (ji,jj,jl) = v_i (ji,jj,jl) * rswitch |
---|
| 570 | v_s (ji,jj,jl) = v_s (ji,jj,jl) * rswitch |
---|
| 571 | t_su (ji,jj,jl) = t_su (ji,jj,jl) * rswitch + t_bo(ji,jj) * ( 1._wp - rswitch ) |
---|
| 572 | oa_i (ji,jj,jl) = oa_i (ji,jj,jl) * rswitch |
---|
| 573 | smv_i(ji,jj,jl) = smv_i(ji,jj,jl) * rswitch |
---|
| 574 | |
---|
| 575 | ! update exchanges with ocean |
---|
| 576 | sfx_res(ji,jj) = sfx_res(ji,jj) - ( smv_i(ji,jj,jl) - zsal ) * rhoic * r1_rdtice |
---|
| 577 | wfx_res(ji,jj) = wfx_res(ji,jj) - ( v_i(ji,jj,jl) - zvi ) * rhoic * r1_rdtice |
---|
| 578 | wfx_snw(ji,jj) = wfx_snw(ji,jj) - ( v_s(ji,jj,jl) - zvs ) * rhosn * r1_rdtice |
---|
| 579 | hfx_res(ji,jj) = hfx_res(ji,jj) + ( e_s(ji,jj,1,jl) - zes ) * r1_rdtice ! W.m-2 <0 |
---|
| 580 | END DO |
---|
| 581 | END DO |
---|
| 582 | END DO |
---|
| 583 | |
---|
| 584 | ! to be sure that at_i is the sum of a_i(jl) |
---|
[7753] | 585 | at_i (:,:) = 0._wp |
---|
[5123] | 586 | DO jl = 1, jpl |
---|
[7753] | 587 | at_i(:,:) = at_i(:,:) + a_i(:,:,jl) |
---|
[5123] | 588 | END DO |
---|
| 589 | |
---|
| 590 | ! open water = 1 if at_i=0 |
---|
| 591 | DO jj = 1, jpj |
---|
| 592 | DO ji = 1, jpi |
---|
| 593 | rswitch = MAX( 0._wp , SIGN( 1._wp, - at_i(ji,jj) ) ) |
---|
| 594 | ato_i(ji,jj) = rswitch + (1._wp - rswitch ) * ato_i(ji,jj) |
---|
| 595 | END DO |
---|
| 596 | END DO |
---|
| 597 | |
---|
| 598 | ! |
---|
| 599 | END SUBROUTINE lim_var_zapsmall |
---|
| 600 | |
---|
| 601 | SUBROUTINE lim_var_itd( zhti, zhts, zai, zht_i, zht_s, za_i ) |
---|
| 602 | !!------------------------------------------------------------------ |
---|
| 603 | !! *** ROUTINE lim_var_itd *** |
---|
| 604 | !! |
---|
| 605 | !! ** Purpose : converting 1-cat ice to multiple ice categories |
---|
| 606 | !! |
---|
| 607 | !! ice thickness distribution follows a gaussian law |
---|
| 608 | !! around the concentration of the most likely ice thickness |
---|
| 609 | !! (similar as limistate.F90) |
---|
| 610 | !! |
---|
| 611 | !! ** Method: Iterative procedure |
---|
| 612 | !! |
---|
| 613 | !! 1) Try to fill the jpl ice categories (bounds hi_max(0:jpl)) with a gaussian |
---|
| 614 | !! |
---|
| 615 | !! 2) Check whether the distribution conserves area and volume, positivity and |
---|
| 616 | !! category boundaries |
---|
| 617 | !! |
---|
| 618 | !! 3) If not (input ice is too thin), the last category is empty and |
---|
| 619 | !! the number of categories is reduced (jpl-1) |
---|
| 620 | !! |
---|
| 621 | !! 4) Iterate until ok (SUM(itest(:) = 4) |
---|
| 622 | !! |
---|
| 623 | !! ** Arguments : zhti: 1-cat ice thickness |
---|
| 624 | !! zhts: 1-cat snow depth |
---|
| 625 | !! zai : 1-cat ice concentration |
---|
| 626 | !! |
---|
| 627 | !! ** Output : jpl-cat |
---|
| 628 | !! |
---|
| 629 | !! (Example of application: BDY forcings when input are cell averaged) |
---|
| 630 | !! |
---|
| 631 | !!------------------------------------------------------------------- |
---|
| 632 | !! History : LIM3.5 - 2012 (M. Vancoppenolle) Original code |
---|
| 633 | !! 2014 (C. Rousset) Rewriting |
---|
| 634 | !!------------------------------------------------------------------- |
---|
| 635 | !! Local variables |
---|
| 636 | INTEGER :: ji, jk, jl ! dummy loop indices |
---|
| 637 | INTEGER :: ijpij, i_fill, jl0 |
---|
[7646] | 638 | REAL(wp) :: zarg, zV, zconv, zdh, zdv |
---|
[5123] | 639 | REAL(wp), DIMENSION(:), INTENT(in) :: zhti, zhts, zai ! input ice/snow variables |
---|
| 640 | REAL(wp), DIMENSION(:,:), INTENT(inout) :: zht_i, zht_s, za_i ! output ice/snow variables |
---|
| 641 | INTEGER , POINTER, DIMENSION(:) :: itest |
---|
| 642 | |
---|
| 643 | CALL wrk_alloc( 4, itest ) |
---|
| 644 | !-------------------------------------------------------------------- |
---|
| 645 | ! initialisation of variables |
---|
| 646 | !-------------------------------------------------------------------- |
---|
| 647 | ijpij = SIZE(zhti,1) |
---|
| 648 | zht_i(1:ijpij,1:jpl) = 0._wp |
---|
| 649 | zht_s(1:ijpij,1:jpl) = 0._wp |
---|
| 650 | za_i (1:ijpij,1:jpl) = 0._wp |
---|
| 651 | |
---|
| 652 | ! ---------------------------------------- |
---|
| 653 | ! distribution over the jpl ice categories |
---|
| 654 | ! ---------------------------------------- |
---|
| 655 | DO ji = 1, ijpij |
---|
| 656 | |
---|
| 657 | IF( zhti(ji) > 0._wp ) THEN |
---|
| 658 | |
---|
[7646] | 659 | ! find which category (jl0) the input ice thickness falls into |
---|
| 660 | jl0 = jpl |
---|
| 661 | DO jl = 1, jpl |
---|
| 662 | IF ( ( zhti(ji) >= hi_max(jl-1) ) .AND. ( zhti(ji) < hi_max(jl) ) ) THEN |
---|
| 663 | jl0 = jl |
---|
| 664 | CYCLE |
---|
| 665 | ENDIF |
---|
| 666 | END DO |
---|
| 667 | |
---|
| 668 | ! initialisation of tests |
---|
| 669 | itest(:) = 0 |
---|
[5123] | 670 | |
---|
[7646] | 671 | i_fill = jpl + 1 !==================================== |
---|
| 672 | DO WHILE ( ( SUM( itest(:) ) /= 4 ) .AND. ( i_fill >= 2 ) ) ! iterative loop on i_fill categories |
---|
| 673 | ! iteration !==================================== |
---|
| 674 | i_fill = i_fill - 1 |
---|
| 675 | |
---|
| 676 | ! initialisation of ice variables for each try |
---|
| 677 | zht_i(ji,1:jpl) = 0._wp |
---|
| 678 | za_i (ji,1:jpl) = 0._wp |
---|
[7813] | 679 | itest(:) = 0 |
---|
[7646] | 680 | |
---|
| 681 | ! *** case very thin ice: fill only category 1 |
---|
| 682 | IF ( i_fill == 1 ) THEN |
---|
| 683 | zht_i(ji,1) = zhti(ji) |
---|
| 684 | za_i (ji,1) = zai (ji) |
---|
| 685 | |
---|
| 686 | ! *** case ice is thicker: fill categories >1 |
---|
| 687 | ELSE |
---|
[5123] | 688 | |
---|
[7646] | 689 | ! Fill ice thicknesses in the (i_fill-1) cat by hmean |
---|
| 690 | DO jl = 1, i_fill - 1 |
---|
| 691 | zht_i(ji,jl) = hi_mean(jl) |
---|
| 692 | END DO |
---|
| 693 | |
---|
| 694 | ! Concentrations in the (i_fill-1) categories |
---|
| 695 | za_i(ji,jl0) = zai(ji) / SQRT(REAL(jpl)) |
---|
| 696 | DO jl = 1, i_fill - 1 |
---|
| 697 | IF ( jl /= jl0 ) THEN |
---|
| 698 | zarg = ( zht_i(ji,jl) - zhti(ji) ) / ( zhti(ji) * 0.5_wp ) |
---|
| 699 | za_i(ji,jl) = za_i (ji,jl0) * EXP(-zarg**2) |
---|
| 700 | ENDIF |
---|
| 701 | END DO |
---|
| 702 | |
---|
| 703 | ! Concentration in the last (i_fill) category |
---|
| 704 | za_i(ji,i_fill) = zai(ji) - SUM( za_i(ji,1:i_fill-1) ) |
---|
| 705 | |
---|
| 706 | ! Ice thickness in the last (i_fill) category |
---|
| 707 | zV = SUM( za_i(ji,1:i_fill-1) * zht_i(ji,1:i_fill-1) ) |
---|
| 708 | zht_i(ji,i_fill) = ( zhti(ji) * zai(ji) - zV ) / MAX( za_i(ji,i_fill), epsi10 ) |
---|
| 709 | |
---|
| 710 | ! clem: correction if concentration of upper cat is greater than lower cat |
---|
| 711 | ! (it should be a gaussian around jl0 but sometimes it is not) |
---|
| 712 | IF ( jl0 /= jpl ) THEN |
---|
| 713 | DO jl = jpl, jl0+1, -1 |
---|
| 714 | IF ( za_i(ji,jl) > za_i(ji,jl-1) ) THEN |
---|
| 715 | zdv = zht_i(ji,jl) * za_i(ji,jl) |
---|
| 716 | zht_i(ji,jl ) = 0._wp |
---|
| 717 | za_i (ji,jl ) = 0._wp |
---|
| 718 | za_i (ji,1:jl-1) = za_i(ji,1:jl-1) + zdv / MAX( REAL(jl-1) * zhti(ji), epsi10 ) |
---|
| 719 | END IF |
---|
| 720 | ENDDO |
---|
[5123] | 721 | ENDIF |
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| 722 | |
---|
[7646] | 723 | ENDIF ! case ice is thick or thin |
---|
[7813] | 724 | |
---|
[7646] | 725 | !--------------------- |
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| 726 | ! Compatibility tests |
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| 727 | !--------------------- |
---|
| 728 | ! Test 1: area conservation |
---|
| 729 | zconv = ABS( zai(ji) - SUM( za_i(ji,1:jpl) ) ) |
---|
| 730 | IF ( zconv < epsi06 ) itest(1) = 1 |
---|
| 731 | |
---|
| 732 | ! Test 2: volume conservation |
---|
| 733 | zconv = ABS( zhti(ji)*zai(ji) - SUM( za_i(ji,1:jpl)*zht_i(ji,1:jpl) ) ) |
---|
| 734 | IF ( zconv < epsi06 ) itest(2) = 1 |
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[5123] | 735 | |
---|
[7646] | 736 | ! Test 3: thickness of the last category is in-bounds ? |
---|
| 737 | IF ( zht_i(ji,i_fill) >= hi_max(i_fill-1) ) itest(3) = 1 |
---|
[5123] | 738 | |
---|
[7646] | 739 | ! Test 4: positivity of ice concentrations |
---|
| 740 | itest(4) = 1 |
---|
| 741 | DO jl = 1, i_fill |
---|
| 742 | IF ( za_i(ji,jl) < 0._wp ) itest(4) = 0 |
---|
| 743 | END DO |
---|
| 744 | ! !============================ |
---|
| 745 | END DO ! end iteration on categories |
---|
| 746 | ! !============================ |
---|
[5123] | 747 | ENDIF ! if zhti > 0 |
---|
| 748 | END DO ! i loop |
---|
[7813] | 749 | |
---|
[5123] | 750 | ! ------------------------------------------------ |
---|
| 751 | ! Adding Snow in each category where za_i is not 0 |
---|
| 752 | ! ------------------------------------------------ |
---|
| 753 | DO jl = 1, jpl |
---|
| 754 | DO ji = 1, ijpij |
---|
| 755 | IF( za_i(ji,jl) > 0._wp ) THEN |
---|
| 756 | zht_s(ji,jl) = zht_i(ji,jl) * ( zhts(ji) / zhti(ji) ) |
---|
| 757 | ! In case snow load is in excess that would lead to transformation from snow to ice |
---|
| 758 | ! Then, transfer the snow excess into the ice (different from limthd_dh) |
---|
| 759 | zdh = MAX( 0._wp, ( rhosn * zht_s(ji,jl) + ( rhoic - rau0 ) * zht_i(ji,jl) ) * r1_rau0 ) |
---|
| 760 | ! recompute ht_i, ht_s avoiding out of bounds values |
---|
| 761 | zht_i(ji,jl) = MIN( hi_max(jl), zht_i(ji,jl) + zdh ) |
---|
| 762 | zht_s(ji,jl) = MAX( 0._wp, zht_s(ji,jl) - zdh * rhoic * r1_rhosn ) |
---|
| 763 | ENDIF |
---|
| 764 | ENDDO |
---|
| 765 | ENDDO |
---|
| 766 | |
---|
| 767 | CALL wrk_dealloc( 4, itest ) |
---|
| 768 | ! |
---|
| 769 | END SUBROUTINE lim_var_itd |
---|
| 770 | |
---|
| 771 | |
---|
[825] | 772 | #else |
---|
[2715] | 773 | !!---------------------------------------------------------------------- |
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| 774 | !! Default option Dummy module NO LIM3 sea-ice model |
---|
| 775 | !!---------------------------------------------------------------------- |
---|
[825] | 776 | CONTAINS |
---|
| 777 | SUBROUTINE lim_var_agg ! Empty routines |
---|
| 778 | END SUBROUTINE lim_var_agg |
---|
| 779 | SUBROUTINE lim_var_glo2eqv ! Empty routines |
---|
| 780 | END SUBROUTINE lim_var_glo2eqv |
---|
| 781 | SUBROUTINE lim_var_eqv2glo ! Empty routines |
---|
| 782 | END SUBROUTINE lim_var_eqv2glo |
---|
| 783 | SUBROUTINE lim_var_salprof ! Empty routines |
---|
| 784 | END SUBROUTINE lim_var_salprof |
---|
| 785 | SUBROUTINE lim_var_bv ! Emtpy routines |
---|
[921] | 786 | END SUBROUTINE lim_var_bv |
---|
[825] | 787 | SUBROUTINE lim_var_salprof1d ! Emtpy routines |
---|
| 788 | END SUBROUTINE lim_var_salprof1d |
---|
[5123] | 789 | SUBROUTINE lim_var_zapsmall |
---|
| 790 | END SUBROUTINE lim_var_zapsmall |
---|
| 791 | SUBROUTINE lim_var_itd |
---|
| 792 | END SUBROUTINE lim_var_itd |
---|
[2715] | 793 | #endif |
---|
[825] | 794 | |
---|
[2715] | 795 | !!====================================================================== |
---|
[834] | 796 | END MODULE limvar |
---|