1 | MODULE limitd_me |
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2 | !!====================================================================== |
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3 | !! *** MODULE limitd_me *** |
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4 | !! LIM-3 : Mechanical impact on ice thickness distribution |
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5 | !!====================================================================== |
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6 | !! History : LIM ! 2006-02 (M. Vancoppenolle) Original code |
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7 | !! 3.2 ! 2009-07 (M. Vancoppenolle, Y. Aksenov, G. Madec) bug correction in smsw & fsalt_rpo |
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8 | !! 4.0 ! 2011-02 (G. Madec) dynamical allocation |
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9 | !!---------------------------------------------------------------------- |
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10 | #if defined key_lim3 |
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11 | !!---------------------------------------------------------------------- |
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12 | !! 'key_lim3' LIM-3 sea-ice model |
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13 | !!---------------------------------------------------------------------- |
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14 | USE par_oce ! ocean parameters |
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15 | USE dom_oce ! ocean domain |
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16 | USE phycst ! physical constants (ocean directory) |
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17 | USE sbc_oce ! surface boundary condition: ocean fields |
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18 | USE thd_ice ! LIM thermodynamics |
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19 | USE ice ! LIM variables |
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20 | USE par_ice ! LIM parameters |
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21 | USE dom_ice ! LIM domain |
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22 | USE limthd_lac ! LIM |
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23 | USE limvar ! LIM |
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24 | USE limcons ! LIM |
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25 | USE in_out_manager ! I/O manager |
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26 | USE lbclnk ! lateral boundary condition - MPP exchanges |
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27 | USE lib_mpp ! MPP library |
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28 | USE wrk_nemo ! work arrays |
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29 | USE prtctl ! Print control |
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30 | USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) |
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31 | |
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32 | IMPLICIT NONE |
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33 | PRIVATE |
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34 | |
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35 | PUBLIC lim_itd_me ! called by ice_stp |
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36 | PUBLIC lim_itd_me_icestrength |
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37 | PUBLIC lim_itd_me_init |
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38 | PUBLIC lim_itd_me_zapsmall |
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39 | PUBLIC lim_itd_me_alloc ! called by iceini.F90 |
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40 | |
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41 | REAL(wp) :: epsi11 = 1.e-11_wp ! constant values |
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42 | REAL(wp) :: epsi10 = 1.e-10_wp ! constant values |
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43 | REAL(wp) :: epsi06 = 1.e-06_wp ! constant values |
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44 | |
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45 | !----------------------------------------------------------------------- |
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46 | ! Variables shared among ridging subroutines |
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47 | !----------------------------------------------------------------------- |
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48 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: asum ! sum of total ice and open water area |
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49 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: aksum ! ratio of area removed to area ridged |
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50 | ! |
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51 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: athorn ! participation function; fraction of ridging/ |
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52 | ! ! closing associated w/ category n |
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53 | ! |
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54 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: hrmin ! minimum ridge thickness |
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55 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: hrmax ! maximum ridge thickness |
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56 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: hraft ! thickness of rafted ice |
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57 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: krdg ! mean ridge thickness/thickness of ridging ice |
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58 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: aridge ! participating ice ridging |
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59 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: araft ! participating ice rafting |
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60 | |
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61 | REAL(wp), PARAMETER :: krdgmin = 1.1_wp ! min ridge thickness multiplier |
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62 | REAL(wp), PARAMETER :: kraft = 2.0_wp ! rafting multipliyer |
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63 | |
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64 | REAL(wp) :: Cp ! |
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65 | ! |
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66 | !----------------------------------------------------------------------- |
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67 | ! Ridging diagnostic arrays for history files |
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68 | !----------------------------------------------------------------------- |
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69 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: dardg1dt ! rate of fractional area loss by ridging ice (1/s) |
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70 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: dardg2dt ! rate of fractional area gain by new ridges (1/s) |
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71 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: dvirdgdt ! rate of ice volume ridged (m/s) |
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72 | REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: opening ! rate of opening due to divergence/shear (1/s) |
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73 | ! |
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74 | !!---------------------------------------------------------------------- |
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75 | !! NEMO/LIM3 3.3 , UCL - NEMO Consortium (2010) |
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76 | !! $Id$ |
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77 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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78 | !!---------------------------------------------------------------------- |
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79 | CONTAINS |
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80 | |
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81 | INTEGER FUNCTION lim_itd_me_alloc() |
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82 | !!---------------------------------------------------------------------! |
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83 | !! *** ROUTINE lim_itd_me_alloc *** |
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84 | !!---------------------------------------------------------------------! |
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85 | ALLOCATE( & |
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86 | !* Variables shared among ridging subroutines |
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87 | & asum (jpi,jpj) , athorn(jpi,jpj,0:jpl) , & |
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88 | & aksum(jpi,jpj) , & |
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89 | ! |
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90 | & hrmin(jpi,jpj,jpl) , hraft(jpi,jpj,jpl) , aridge(jpi,jpj,jpl) , & |
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91 | & hrmax(jpi,jpj,jpl) , krdg (jpi,jpj,jpl) , araft (jpi,jpj,jpl) , & |
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92 | ! |
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93 | !* Ridging diagnostic arrays for history files |
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94 | & dardg1dt(jpi,jpj) , dardg2dt(jpi,jpj) , & |
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95 | & dvirdgdt(jpi,jpj) , opening(jpi,jpj) , STAT=lim_itd_me_alloc ) |
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96 | ! |
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97 | IF( lim_itd_me_alloc /= 0 ) CALL ctl_warn( 'lim_itd_me_alloc: failed to allocate arrays' ) |
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98 | ! |
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99 | END FUNCTION lim_itd_me_alloc |
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100 | |
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101 | |
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102 | SUBROUTINE lim_itd_me |
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103 | !!---------------------------------------------------------------------! |
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104 | !! *** ROUTINE lim_itd_me *** |
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105 | !! |
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106 | !! ** Purpose : computes the mechanical redistribution of ice thickness |
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107 | !! |
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108 | !! ** Method : Steps : |
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109 | !! 1) Thickness categories boundaries, ice / o.w. concentrations |
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110 | !! Ridge preparation |
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111 | !! 2) Dynamical inputs (closing rate, divu_adv, opning) |
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112 | !! 3) Ridging iteration |
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113 | !! 4) Ridging diagnostics |
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114 | !! 5) Heat, salt and freshwater fluxes |
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115 | !! 6) Compute increments of tate variables and come back to old values |
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116 | !! |
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117 | !! References : Flato, G. M., and W. D. Hibler III, 1995, JGR, 100, 18,611-18,626. |
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118 | !! Hibler, W. D. III, 1980, MWR, 108, 1943-1973, 1980. |
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119 | !! Rothrock, D. A., 1975: JGR, 80, 4514-4519. |
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120 | !! Thorndike et al., 1975, JGR, 80, 4501-4513. |
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121 | !! Bitz et al., JGR, 2001 |
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122 | !! Amundrud and Melling, JGR 2005 |
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123 | !! Babko et al., JGR 2002 |
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124 | !! |
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125 | !! This routine is based on CICE code and authors William H. Lipscomb, |
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126 | !! and Elizabeth C. Hunke, LANL are gratefully acknowledged |
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127 | !!--------------------------------------------------------------------! |
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128 | INTEGER :: ji, jj, jk, jl ! dummy loop index |
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129 | INTEGER :: niter, nitermax = 20 ! local integer |
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130 | LOGICAL :: asum_error ! flag for asum .ne. 1 |
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131 | INTEGER :: iterate_ridging ! if true, repeat the ridging |
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132 | REAL(wp) :: w1, tmpfac ! local scalar |
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133 | CHARACTER (len = 15) :: fieldid |
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134 | REAL(wp), POINTER, DIMENSION(:,:) :: closing_net ! net rate at which area is removed (1/s) |
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135 | ! (ridging ice area - area of new ridges) / dt |
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136 | REAL(wp), POINTER, DIMENSION(:,:) :: divu_adv ! divu as implied by transport scheme (1/s) |
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137 | REAL(wp), POINTER, DIMENSION(:,:) :: opning ! rate of opening due to divergence/shear |
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138 | REAL(wp), POINTER, DIMENSION(:,:) :: closing_gross ! rate at which area removed, not counting area of new ridges |
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139 | REAL(wp), POINTER, DIMENSION(:,:) :: msnow_mlt ! mass of snow added to ocean (kg m-2) |
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140 | REAL(wp), POINTER, DIMENSION(:,:) :: esnow_mlt ! energy needed to melt snow in ocean (J m-2) |
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141 | REAL(wp), POINTER, DIMENSION(:,:) :: vt_i_init, vt_i_final ! ice volume summed over categories |
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142 | !!----------------------------------------------------------------------------- |
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143 | |
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144 | CALL wrk_alloc( jpi, jpj, closing_net, divu_adv, opning, closing_gross, msnow_mlt, esnow_mlt, vt_i_init, vt_i_final ) |
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145 | |
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146 | IF( numit == nstart ) CALL lim_itd_me_init ! Initialization (first time-step only) |
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147 | |
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148 | IF(ln_ctl) THEN |
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149 | CALL prt_ctl(tab2d_1=ato_i , clinfo1=' lim_itd_me: ato_i : ', tab2d_2=at_i , clinfo2=' at_i : ') |
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150 | CALL prt_ctl(tab2d_1=divu_i, clinfo1=' lim_itd_me: divu_i : ', tab2d_2=delta_i, clinfo2=' delta_i : ') |
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151 | ENDIF |
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152 | |
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153 | !-----------------------------------------------------------------------------! |
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154 | ! 1) Thickness categories boundaries, ice / o.w. concentrations, init_ons |
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155 | !-----------------------------------------------------------------------------! |
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156 | ! Set hi_max(ncat) to a big value to ensure that all ridged ice is thinner than hi_max(ncat). |
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157 | |
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158 | hi_max(jpl) = 999.99 |
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159 | |
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160 | Cp = 0.5 * grav * (rau0-rhoic) * rhoic / rau0 ! proport const for PE |
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161 | ! |
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162 | CALL lim_itd_me_ridgeprep ! prepare ridging |
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163 | ! |
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164 | IF( con_i) CALL lim_column_sum( jpl, v_i, vt_i_init ) ! conservation check |
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165 | |
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166 | DO jj = 1, jpj ! Initialize arrays. |
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167 | DO ji = 1, jpi |
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168 | msnow_mlt(ji,jj) = 0._wp |
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169 | esnow_mlt(ji,jj) = 0._wp |
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170 | dardg1dt (ji,jj) = 0._wp |
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171 | dardg2dt (ji,jj) = 0._wp |
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172 | dvirdgdt (ji,jj) = 0._wp |
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173 | opening (ji,jj) = 0._wp |
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174 | |
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175 | !-----------------------------------------------------------------------------! |
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176 | ! 2) Dynamical inputs (closing rate, divu_adv, opning) |
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177 | !-----------------------------------------------------------------------------! |
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178 | ! |
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179 | ! 2.1 closing_net |
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180 | !----------------- |
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181 | ! Compute the net rate of closing due to convergence |
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182 | ! and shear, based on Flato and Hibler (1995). |
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183 | ! |
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184 | ! The energy dissipation rate is equal to the net closing rate |
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185 | ! times the ice strength. |
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186 | ! |
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187 | ! NOTE: The NET closing rate is equal to the rate that open water |
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188 | ! area is removed, plus the rate at which ice area is removed by |
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189 | ! ridging, minus the rate at which area is added in new ridges. |
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190 | ! The GROSS closing rate is equal to the first two terms (open |
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191 | ! water closing and thin ice ridging) without the third term |
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192 | ! (thick, newly ridged ice). |
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193 | |
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194 | closing_net(ji,jj) = Cs * 0.5 * ( Delta_i(ji,jj) - ABS( divu_i(ji,jj) ) ) - MIN( divu_i(ji,jj), 0._wp ) |
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195 | |
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196 | ! 2.2 divu_adv |
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197 | !-------------- |
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198 | ! Compute divu_adv, the divergence rate given by the transport/ |
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199 | ! advection scheme, which may not be equal to divu as computed |
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200 | ! from the velocity field. |
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201 | ! |
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202 | ! If divu_adv < 0, make sure the closing rate is large enough |
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203 | ! to give asum = 1.0 after ridging. |
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204 | |
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205 | divu_adv(ji,jj) = ( 1._wp - asum(ji,jj) ) * r1_rdtice ! asum found in ridgeprep |
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206 | |
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207 | IF( divu_adv(ji,jj) < 0._wp ) closing_net(ji,jj) = MAX( closing_net(ji,jj), -divu_adv(ji,jj) ) |
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208 | |
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209 | ! 2.3 opning |
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210 | !------------ |
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211 | ! Compute the (non-negative) opening rate that will give asum = 1.0 after ridging. |
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212 | opning(ji,jj) = closing_net(ji,jj) + divu_adv(ji,jj) |
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213 | END DO |
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214 | END DO |
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215 | |
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216 | !-----------------------------------------------------------------------------! |
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217 | ! 3) Ridging iteration |
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218 | !-----------------------------------------------------------------------------! |
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219 | niter = 1 ! iteration counter |
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220 | iterate_ridging = 1 |
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221 | |
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222 | DO WHILE ( iterate_ridging > 0 .AND. niter < nitermax ) |
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223 | |
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224 | DO jj = 1, jpj |
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225 | DO ji = 1, jpi |
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226 | |
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227 | ! 3.2 closing_gross |
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228 | !-----------------------------------------------------------------------------! |
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229 | ! Based on the ITD of ridging and ridged ice, convert the net |
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230 | ! closing rate to a gross closing rate. |
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231 | ! NOTE: 0 < aksum <= 1 |
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232 | closing_gross(ji,jj) = closing_net(ji,jj) / aksum(ji,jj) |
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233 | |
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234 | ! correction to closing rate and opening if closing rate is excessive |
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235 | !--------------------------------------------------------------------- |
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236 | ! Reduce the closing rate if more than 100% of the open water |
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237 | ! would be removed. Reduce the opening rate proportionately. |
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238 | IF ( ato_i(ji,jj) .GT. epsi11 .AND. athorn(ji,jj,0) .GT. 0.0 ) THEN |
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239 | w1 = athorn(ji,jj,0) * closing_gross(ji,jj) * rdt_ice |
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240 | IF ( w1 .GT. ato_i(ji,jj)) THEN |
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241 | tmpfac = ato_i(ji,jj) / w1 |
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242 | closing_gross(ji,jj) = closing_gross(ji,jj) * tmpfac |
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243 | opning(ji,jj) = opning(ji,jj) * tmpfac |
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244 | ENDIF !w1 |
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245 | ENDIF !at0i and athorn |
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246 | |
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247 | END DO ! ji |
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248 | END DO ! jj |
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249 | |
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250 | ! correction to closing rate / opening if excessive ice removal |
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251 | !--------------------------------------------------------------- |
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252 | ! Reduce the closing rate if more than 100% of any ice category |
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253 | ! would be removed. Reduce the opening rate proportionately. |
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254 | |
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255 | DO jl = 1, jpl |
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256 | DO jj = 1, jpj |
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257 | DO ji = 1, jpi |
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258 | IF ( a_i(ji,jj,jl) > epsi11 .AND. athorn(ji,jj,jl) > 0._wp )THEN |
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259 | w1 = athorn(ji,jj,jl) * closing_gross(ji,jj) * rdt_ice |
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260 | IF ( w1 > a_i(ji,jj,jl) ) THEN |
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261 | tmpfac = a_i(ji,jj,jl) / w1 |
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262 | closing_gross(ji,jj) = closing_gross(ji,jj) * tmpfac |
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263 | opning (ji,jj) = opning (ji,jj) * tmpfac |
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264 | ENDIF |
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265 | ENDIF |
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266 | END DO !ji |
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267 | END DO ! jj |
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268 | END DO !jl |
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269 | |
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270 | ! 3.3 Redistribute area, volume, and energy. |
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271 | !-----------------------------------------------------------------------------! |
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272 | |
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273 | CALL lim_itd_me_ridgeshift( opning, closing_gross, msnow_mlt, esnow_mlt ) |
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274 | |
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275 | ! 3.4 Compute total area of ice plus open water after ridging. |
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276 | !-----------------------------------------------------------------------------! |
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277 | |
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278 | CALL lim_itd_me_asumr |
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279 | |
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280 | ! 3.5 Do we keep on iterating ??? |
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281 | !-----------------------------------------------------------------------------! |
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282 | ! Check whether asum = 1. If not (because the closing and opening |
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283 | ! rates were reduced above), ridge again with new rates. |
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284 | |
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285 | iterate_ridging = 0 |
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286 | |
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287 | DO jj = 1, jpj |
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288 | DO ji = 1, jpi |
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289 | IF (ABS(asum(ji,jj) - 1.0) .LT. epsi11) THEN |
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290 | closing_net(ji,jj) = 0._wp |
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291 | opning (ji,jj) = 0._wp |
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292 | ELSE |
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293 | iterate_ridging = 1 |
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294 | divu_adv (ji,jj) = (1._wp - asum(ji,jj)) * r1_rdtice |
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295 | closing_net(ji,jj) = MAX( 0._wp, -divu_adv(ji,jj) ) |
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296 | opning (ji,jj) = MAX( 0._wp, divu_adv(ji,jj) ) |
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297 | ENDIF |
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298 | END DO |
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299 | END DO |
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300 | |
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301 | IF( lk_mpp ) CALL mpp_max( iterate_ridging ) |
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302 | |
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303 | ! Repeat if necessary. |
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304 | ! NOTE: If strength smoothing is turned on, the ridging must be |
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305 | ! iterated globally because of the boundary update in the |
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306 | ! smoothing. |
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307 | |
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308 | niter = niter + 1 |
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309 | |
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310 | IF( iterate_ridging == 1 ) THEN |
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311 | IF( niter > nitermax ) THEN |
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312 | WRITE(numout,*) ' ALERTE : non-converging ridging scheme ' |
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313 | WRITE(numout,*) ' niter, iterate_ridging ', niter, iterate_ridging |
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314 | ENDIF |
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315 | CALL lim_itd_me_ridgeprep |
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316 | ENDIF |
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317 | |
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318 | END DO !! on the do while over iter |
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319 | |
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320 | !-----------------------------------------------------------------------------! |
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321 | ! 4) Ridging diagnostics |
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322 | !-----------------------------------------------------------------------------! |
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323 | ! Convert ridging rate diagnostics to correct units. |
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324 | ! Update fresh water and heat fluxes due to snow melt. |
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325 | |
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326 | asum_error = .false. |
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327 | |
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328 | DO jj = 1, jpj |
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329 | DO ji = 1, jpi |
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330 | |
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331 | IF( ABS( asum(ji,jj) - 1.0 ) > epsi11 ) asum_error = .true. |
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332 | |
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333 | dardg1dt(ji,jj) = dardg1dt(ji,jj) * r1_rdtice |
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334 | dardg2dt(ji,jj) = dardg2dt(ji,jj) * r1_rdtice |
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335 | dvirdgdt(ji,jj) = dvirdgdt(ji,jj) * r1_rdtice |
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336 | opening (ji,jj) = opening (ji,jj) * r1_rdtice |
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337 | |
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338 | !-----------------------------------------------------------------------------! |
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339 | ! 5) Heat, salt and freshwater fluxes |
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340 | !-----------------------------------------------------------------------------! |
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341 | fmmec(ji,jj) = fmmec(ji,jj) + msnow_mlt(ji,jj) * r1_rdtice ! fresh water source for ocean |
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342 | fhmec(ji,jj) = fhmec(ji,jj) + esnow_mlt(ji,jj) * r1_rdtice ! heat sink for ocean |
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343 | |
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344 | END DO |
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345 | END DO |
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346 | |
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347 | ! Check if there is a ridging error |
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348 | DO jj = 1, jpj |
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349 | DO ji = 1, jpi |
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350 | IF( ABS( asum(ji,jj) - 1._wp ) > epsi11 ) THEN ! there is a bug |
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351 | WRITE(numout,*) ' ' |
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352 | WRITE(numout,*) ' ALERTE : Ridging error: total area = ', asum(ji,jj) |
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353 | WRITE(numout,*) ' limitd_me ' |
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354 | WRITE(numout,*) ' POINT : ', ji, jj |
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355 | WRITE(numout,*) ' jpl, a_i, athorn ' |
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356 | WRITE(numout,*) 0, ato_i(ji,jj), athorn(ji,jj,0) |
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357 | DO jl = 1, jpl |
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358 | WRITE(numout,*) jl, a_i(ji,jj,jl), athorn(ji,jj,jl) |
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359 | END DO |
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360 | ENDIF ! asum |
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361 | |
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362 | END DO !ji |
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363 | END DO !jj |
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364 | |
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365 | ! Conservation check |
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366 | IF ( con_i ) THEN |
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367 | CALL lim_column_sum (jpl, v_i, vt_i_final) |
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368 | fieldid = ' v_i : limitd_me ' |
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369 | CALL lim_cons_check (vt_i_init, vt_i_final, 1.0e-6, fieldid) |
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370 | ENDIF |
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371 | |
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372 | !-----------------------------------------------------------------------------! |
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373 | ! 6) Updating state variables and trend terms |
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374 | !-----------------------------------------------------------------------------! |
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375 | |
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376 | CALL lim_var_glo2eqv |
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377 | CALL lim_itd_me_zapsmall |
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378 | |
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379 | !----------------- |
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380 | ! Trend terms |
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381 | !----------------- |
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382 | |
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383 | d_u_ice_dyn(:,:) = u_ice(:,:) - old_u_ice(:,:) |
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384 | d_v_ice_dyn(:,:) = v_ice(:,:) - old_v_ice(:,:) |
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385 | d_a_i_trp (:,:,:) = a_i (:,:,:) - old_a_i (:,:,:) |
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386 | d_v_s_trp (:,:,:) = v_s (:,:,:) - old_v_s (:,:,:) |
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387 | d_v_i_trp (:,:,:) = v_i (:,:,:) - old_v_i (:,:,:) |
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388 | d_e_s_trp (:,:,:,:) = e_s (:,:,:,:) - old_e_s (:,:,:,:) |
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389 | d_e_i_trp (:,:,:,:) = e_i (:,:,:,:) - old_e_i (:,:,:,:) |
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390 | d_oa_i_trp (:,:,:) = oa_i (:,:,:) - old_oa_i (:,:,:) |
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391 | d_smv_i_trp(:,:,:) = 0._wp |
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392 | IF( num_sal == 2 ) d_smv_i_trp(:,:,:) = smv_i(:,:,:) - old_smv_i(:,:,:) |
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393 | |
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394 | IF(ln_ctl) THEN ! Control print |
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395 | CALL prt_ctl_info(' ') |
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396 | CALL prt_ctl_info(' - Cell values : ') |
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397 | CALL prt_ctl_info(' ~~~~~~~~~~~~~ ') |
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398 | CALL prt_ctl(tab2d_1=area , clinfo1=' lim_itd_me : cell area :') |
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399 | CALL prt_ctl(tab2d_1=at_i , clinfo1=' lim_itd_me : at_i :') |
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400 | CALL prt_ctl(tab2d_1=vt_i , clinfo1=' lim_itd_me : vt_i :') |
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401 | CALL prt_ctl(tab2d_1=vt_s , clinfo1=' lim_itd_me : vt_s :') |
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402 | DO jl = 1, jpl |
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403 | CALL prt_ctl_info(' ') |
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404 | CALL prt_ctl_info(' - Category : ', ivar1=jl) |
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405 | CALL prt_ctl_info(' ~~~~~~~~~~') |
---|
406 | CALL prt_ctl(tab2d_1=a_i (:,:,jl) , clinfo1= ' lim_itd_me : a_i : ') |
---|
407 | CALL prt_ctl(tab2d_1=ht_i (:,:,jl) , clinfo1= ' lim_itd_me : ht_i : ') |
---|
408 | CALL prt_ctl(tab2d_1=ht_s (:,:,jl) , clinfo1= ' lim_itd_me : ht_s : ') |
---|
409 | CALL prt_ctl(tab2d_1=v_i (:,:,jl) , clinfo1= ' lim_itd_me : v_i : ') |
---|
410 | CALL prt_ctl(tab2d_1=v_s (:,:,jl) , clinfo1= ' lim_itd_me : v_s : ') |
---|
411 | CALL prt_ctl(tab2d_1=e_s (:,:,1,jl) , clinfo1= ' lim_itd_me : e_s : ') |
---|
412 | CALL prt_ctl(tab2d_1=t_su (:,:,jl) , clinfo1= ' lim_itd_me : t_su : ') |
---|
413 | CALL prt_ctl(tab2d_1=t_s (:,:,1,jl) , clinfo1= ' lim_itd_me : t_snow : ') |
---|
414 | CALL prt_ctl(tab2d_1=sm_i (:,:,jl) , clinfo1= ' lim_itd_me : sm_i : ') |
---|
415 | CALL prt_ctl(tab2d_1=smv_i (:,:,jl) , clinfo1= ' lim_itd_me : smv_i : ') |
---|
416 | DO jk = 1, nlay_i |
---|
417 | CALL prt_ctl_info(' ') |
---|
418 | CALL prt_ctl_info(' - Layer : ', ivar1=jk) |
---|
419 | CALL prt_ctl_info(' ~~~~~~~') |
---|
420 | CALL prt_ctl(tab2d_1=t_i(:,:,jk,jl) , clinfo1= ' lim_itd_me : t_i : ') |
---|
421 | CALL prt_ctl(tab2d_1=e_i(:,:,jk,jl) , clinfo1= ' lim_itd_me : e_i : ') |
---|
422 | END DO |
---|
423 | END DO |
---|
424 | ENDIF |
---|
425 | |
---|
426 | !-------------------------! |
---|
427 | ! Back to initial values |
---|
428 | !-------------------------! |
---|
429 | |
---|
430 | ! update of fields will be made later in lim update |
---|
431 | u_ice(:,:) = old_u_ice(:,:) |
---|
432 | v_ice(:,:) = old_v_ice(:,:) |
---|
433 | a_i(:,:,:) = old_a_i(:,:,:) |
---|
434 | v_s(:,:,:) = old_v_s(:,:,:) |
---|
435 | v_i(:,:,:) = old_v_i(:,:,:) |
---|
436 | e_s(:,:,:,:) = old_e_s(:,:,:,:) |
---|
437 | e_i(:,:,:,:) = old_e_i(:,:,:,:) |
---|
438 | oa_i(:,:,:) = old_oa_i(:,:,:) |
---|
439 | IF( num_sal == 2 ) smv_i(:,:,:) = old_smv_i(:,:,:) |
---|
440 | |
---|
441 | !----------------------------------------------------! |
---|
442 | ! Advection of ice in a free cell, newly ridged ice |
---|
443 | !----------------------------------------------------! |
---|
444 | |
---|
445 | ! to allow for thermodynamics to melt new ice |
---|
446 | ! we immediately advect ice in free cells |
---|
447 | |
---|
448 | ! heat content has to be corrected before ice volume |
---|
449 | DO jl = 1, jpl |
---|
450 | DO jk = 1, nlay_i |
---|
451 | DO jj = 1, jpj |
---|
452 | DO ji = 1, jpi |
---|
453 | IF ( ( old_v_i(ji,jj,jl) < epsi06 ) .AND. & |
---|
454 | ( d_v_i_trp(ji,jj,jl) > epsi06 ) ) THEN |
---|
455 | old_e_i(ji,jj,jk,jl) = d_e_i_trp(ji,jj,jk,jl) |
---|
456 | d_e_i_trp(ji,jj,jk,jl) = 0._wp |
---|
457 | ENDIF |
---|
458 | END DO |
---|
459 | END DO |
---|
460 | END DO |
---|
461 | END DO |
---|
462 | |
---|
463 | DO jl = 1, jpl |
---|
464 | DO jj = 1, jpj |
---|
465 | DO ji = 1, jpi |
---|
466 | IF( old_v_i (ji,jj,jl) < epsi06 .AND. & |
---|
467 | d_v_i_trp(ji,jj,jl) > epsi06 ) THEN |
---|
468 | old_v_i (ji,jj,jl) = d_v_i_trp(ji,jj,jl) |
---|
469 | d_v_i_trp (ji,jj,jl) = 0._wp |
---|
470 | old_a_i (ji,jj,jl) = d_a_i_trp(ji,jj,jl) |
---|
471 | d_a_i_trp (ji,jj,jl) = 0._wp |
---|
472 | old_v_s (ji,jj,jl) = d_v_s_trp(ji,jj,jl) |
---|
473 | d_v_s_trp (ji,jj,jl) = 0._wp |
---|
474 | old_e_s (ji,jj,1,jl) = d_e_s_trp(ji,jj,1,jl) |
---|
475 | d_e_s_trp (ji,jj,1,jl) = 0._wp |
---|
476 | old_oa_i (ji,jj,jl) = d_oa_i_trp(ji,jj,jl) |
---|
477 | d_oa_i_trp(ji,jj,jl) = 0._wp |
---|
478 | IF( num_sal == 2 ) old_smv_i(ji,jj,jl) = d_smv_i_trp(ji,jj,jl) |
---|
479 | d_smv_i_trp(ji,jj,jl) = 0._wp |
---|
480 | ENDIF |
---|
481 | END DO |
---|
482 | END DO |
---|
483 | END DO |
---|
484 | ! |
---|
485 | CALL wrk_dealloc( jpi, jpj, closing_net, divu_adv, opning, closing_gross, msnow_mlt, esnow_mlt, vt_i_init, vt_i_final ) |
---|
486 | ! |
---|
487 | END SUBROUTINE lim_itd_me |
---|
488 | |
---|
489 | |
---|
490 | SUBROUTINE lim_itd_me_icestrength( kstrngth ) |
---|
491 | !!---------------------------------------------------------------------- |
---|
492 | !! *** ROUTINE lim_itd_me_icestrength *** |
---|
493 | !! |
---|
494 | !! ** Purpose : computes ice strength used in dynamics routines of ice thickness |
---|
495 | !! |
---|
496 | !! ** Method : Compute the strength of the ice pack, defined as the energy (J m-2) |
---|
497 | !! dissipated per unit area removed from the ice pack under compression, |
---|
498 | !! and assumed proportional to the change in potential energy caused |
---|
499 | !! by ridging. Note that only Hibler's formulation is stable and that |
---|
500 | !! ice strength has to be smoothed |
---|
501 | !! |
---|
502 | !! ** Inputs / Ouputs : kstrngth (what kind of ice strength we are using) |
---|
503 | !!---------------------------------------------------------------------- |
---|
504 | INTEGER, INTENT(in) :: kstrngth ! = 1 for Rothrock formulation, 0 for Hibler (1979) |
---|
505 | |
---|
506 | INTEGER :: ji,jj, jl ! dummy loop indices |
---|
507 | INTEGER :: ksmooth ! smoothing the resistance to deformation |
---|
508 | INTEGER :: numts_rm ! number of time steps for the P smoothing |
---|
509 | REAL(wp) :: hi, zw1, zp, zdummy, zzc, z1_3 ! local scalars |
---|
510 | REAL(wp), POINTER, DIMENSION(:,:) :: zworka ! temporary array used here |
---|
511 | !!---------------------------------------------------------------------- |
---|
512 | |
---|
513 | CALL wrk_alloc( jpi, jpj, zworka ) |
---|
514 | |
---|
515 | !------------------------------------------------------------------------------! |
---|
516 | ! 1) Initialize |
---|
517 | !------------------------------------------------------------------------------! |
---|
518 | strength(:,:) = 0._wp |
---|
519 | |
---|
520 | !------------------------------------------------------------------------------! |
---|
521 | ! 2) Compute thickness distribution of ridging and ridged ice |
---|
522 | !------------------------------------------------------------------------------! |
---|
523 | CALL lim_itd_me_ridgeprep |
---|
524 | |
---|
525 | !------------------------------------------------------------------------------! |
---|
526 | ! 3) Rothrock(1975)'s method |
---|
527 | !------------------------------------------------------------------------------! |
---|
528 | IF( kstrngth == 1 ) THEN |
---|
529 | z1_3 = 1._wp / 3._wp |
---|
530 | DO jl = 1, jpl |
---|
531 | DO jj= 1, jpj |
---|
532 | DO ji = 1, jpi |
---|
533 | ! |
---|
534 | IF( a_i(ji,jj,jl) > epsi11 .AND. & |
---|
535 | athorn(ji,jj,jl) > 0._wp ) THEN |
---|
536 | hi = v_i(ji,jj,jl) / a_i(ji,jj,jl) |
---|
537 | !---------------------------- |
---|
538 | ! PE loss from deforming ice |
---|
539 | !---------------------------- |
---|
540 | strength(ji,jj) = strength(ji,jj) - athorn(ji,jj,jl) * hi * hi |
---|
541 | |
---|
542 | !-------------------------- |
---|
543 | ! PE gain from rafting ice |
---|
544 | !-------------------------- |
---|
545 | strength(ji,jj) = strength(ji,jj) + 2._wp * araft(ji,jj,jl) * hi * hi |
---|
546 | |
---|
547 | !---------------------------- |
---|
548 | ! PE gain from ridging ice |
---|
549 | !---------------------------- |
---|
550 | strength(ji,jj) = strength(ji,jj) + aridge(ji,jj,jl)/krdg(ji,jj,jl) & |
---|
551 | * z1_3 * (hrmax(ji,jj,jl)**3 - hrmin(ji,jj,jl)**3) / ( hrmax(ji,jj,jl)-hrmin(ji,jj,jl) ) |
---|
552 | !!gm Optimization: (a**3-b**3)/(a-b) = a*a+ab+b*b ==> less costly operations even if a**3 is replaced by a*a*a... |
---|
553 | ENDIF ! aicen > epsi11 |
---|
554 | ! |
---|
555 | END DO ! ji |
---|
556 | END DO !jj |
---|
557 | END DO !jl |
---|
558 | |
---|
559 | zzc = Cf * Cp ! where Cp = (g/2)*(rhow-rhoi)*(rhoi/rhow) and Cf accounts for frictional dissipation |
---|
560 | strength(:,:) = zzc * strength(:,:) / aksum(:,:) |
---|
561 | |
---|
562 | ksmooth = 1 |
---|
563 | |
---|
564 | !------------------------------------------------------------------------------! |
---|
565 | ! 4) Hibler (1979)' method |
---|
566 | !------------------------------------------------------------------------------! |
---|
567 | ELSE ! kstrngth ne 1: Hibler (1979) form |
---|
568 | ! |
---|
569 | strength(:,:) = Pstar * vt_i(:,:) * EXP( - C_rhg * ( 1._wp - at_i(:,:) ) ) |
---|
570 | ! |
---|
571 | ksmooth = 1 |
---|
572 | ! |
---|
573 | ENDIF ! kstrngth |
---|
574 | |
---|
575 | ! |
---|
576 | !------------------------------------------------------------------------------! |
---|
577 | ! 5) Impact of brine volume |
---|
578 | !------------------------------------------------------------------------------! |
---|
579 | ! CAN BE REMOVED |
---|
580 | ! |
---|
581 | IF ( brinstren_swi == 1 ) THEN |
---|
582 | |
---|
583 | DO jj = 1, jpj |
---|
584 | DO ji = 1, jpi |
---|
585 | IF ( bv_i(ji,jj) .GT. 0.0 ) THEN |
---|
586 | zdummy = MIN ( bv_i(ji,jj), 0.10 ) * MIN( bv_i(ji,jj), 0.10 ) |
---|
587 | ELSE |
---|
588 | zdummy = 0.0 |
---|
589 | ENDIF |
---|
590 | strength(ji,jj) = strength(ji,jj) * exp(-5.88*SQRT(MAX(bv_i(ji,jj),0.0))) |
---|
591 | END DO ! j |
---|
592 | END DO ! i |
---|
593 | |
---|
594 | ENDIF |
---|
595 | |
---|
596 | ! |
---|
597 | !------------------------------------------------------------------------------! |
---|
598 | ! 6) Smoothing ice strength |
---|
599 | !------------------------------------------------------------------------------! |
---|
600 | ! |
---|
601 | !------------------- |
---|
602 | ! Spatial smoothing |
---|
603 | !------------------- |
---|
604 | IF ( ksmooth == 1 ) THEN |
---|
605 | |
---|
606 | CALL lbc_lnk( strength, 'T', 1. ) |
---|
607 | |
---|
608 | DO jj = 2, jpj - 1 |
---|
609 | DO ji = 2, jpi - 1 |
---|
610 | IF ( ( asum(ji,jj) - ato_i(ji,jj) ) .GT. epsi11) THEN ! ice is |
---|
611 | ! present |
---|
612 | zworka(ji,jj) = 4.0 * strength(ji,jj) & |
---|
613 | & + strength(ji-1,jj) * tms(ji-1,jj) & |
---|
614 | & + strength(ji+1,jj) * tms(ji+1,jj) & |
---|
615 | & + strength(ji,jj-1) * tms(ji,jj-1) & |
---|
616 | & + strength(ji,jj+1) * tms(ji,jj+1) |
---|
617 | |
---|
618 | zw1 = 4.0 + tms(ji-1,jj) + tms(ji+1,jj) + tms(ji,jj-1) + tms(ji,jj+1) |
---|
619 | zworka(ji,jj) = zworka(ji,jj) / zw1 |
---|
620 | ELSE |
---|
621 | zworka(ji,jj) = 0._wp |
---|
622 | ENDIF |
---|
623 | END DO |
---|
624 | END DO |
---|
625 | |
---|
626 | DO jj = 2, jpj - 1 |
---|
627 | DO ji = 2, jpi - 1 |
---|
628 | strength(ji,jj) = zworka(ji,jj) |
---|
629 | END DO |
---|
630 | END DO |
---|
631 | CALL lbc_lnk( strength, 'T', 1. ) |
---|
632 | |
---|
633 | ENDIF ! ksmooth |
---|
634 | |
---|
635 | !-------------------- |
---|
636 | ! Temporal smoothing |
---|
637 | !-------------------- |
---|
638 | IF ( numit == nit000 + nn_fsbc - 1 ) THEN |
---|
639 | strp1(:,:) = 0.0 |
---|
640 | strp2(:,:) = 0.0 |
---|
641 | ENDIF |
---|
642 | |
---|
643 | IF ( ksmooth == 2 ) THEN |
---|
644 | |
---|
645 | |
---|
646 | CALL lbc_lnk( strength, 'T', 1. ) |
---|
647 | |
---|
648 | DO jj = 1, jpj - 1 |
---|
649 | DO ji = 1, jpi - 1 |
---|
650 | IF ( ( asum(ji,jj) - ato_i(ji,jj) ) .GT. epsi11) THEN ! ice is present |
---|
651 | numts_rm = 1 ! number of time steps for the running mean |
---|
652 | IF ( strp1(ji,jj) .GT. 0.0 ) numts_rm = numts_rm + 1 |
---|
653 | IF ( strp2(ji,jj) .GT. 0.0 ) numts_rm = numts_rm + 1 |
---|
654 | zp = ( strength(ji,jj) + strp1(ji,jj) + strp2(ji,jj) ) / numts_rm |
---|
655 | strp2(ji,jj) = strp1(ji,jj) |
---|
656 | strp1(ji,jj) = strength(ji,jj) |
---|
657 | strength(ji,jj) = zp |
---|
658 | |
---|
659 | ENDIF |
---|
660 | END DO |
---|
661 | END DO |
---|
662 | |
---|
663 | ENDIF ! ksmooth |
---|
664 | |
---|
665 | CALL lbc_lnk( strength, 'T', 1. ) ! Boundary conditions |
---|
666 | |
---|
667 | CALL wrk_dealloc( jpi, jpj, zworka ) |
---|
668 | ! |
---|
669 | END SUBROUTINE lim_itd_me_icestrength |
---|
670 | |
---|
671 | |
---|
672 | SUBROUTINE lim_itd_me_ridgeprep |
---|
673 | !!---------------------------------------------------------------------! |
---|
674 | !! *** ROUTINE lim_itd_me_ridgeprep *** |
---|
675 | !! |
---|
676 | !! ** Purpose : preparation for ridging and strength calculations |
---|
677 | !! |
---|
678 | !! ** Method : Compute the thickness distribution of the ice and open water |
---|
679 | !! participating in ridging and of the resulting ridges. |
---|
680 | !!---------------------------------------------------------------------! |
---|
681 | INTEGER :: ji,jj, jl ! dummy loop indices |
---|
682 | INTEGER :: krdg_index ! |
---|
683 | REAL(wp) :: Gstari, astari, hi, hrmean, zdummy ! local scalar |
---|
684 | REAL(wp), POINTER, DIMENSION(:,:) :: zworka ! temporary array used here |
---|
685 | REAL(wp), POINTER, DIMENSION(:,:,:) :: Gsum ! Gsum(n) = sum of areas in categories 0 to n |
---|
686 | !------------------------------------------------------------------------------! |
---|
687 | |
---|
688 | CALL wrk_alloc( jpi,jpj, zworka ) |
---|
689 | CALL wrk_alloc( jpi,jpj,jpl+2, Gsum, kkstart = -1 ) |
---|
690 | |
---|
691 | Gstari = 1.0/Gstar |
---|
692 | astari = 1.0/astar |
---|
693 | aksum(:,:) = 0.0 |
---|
694 | athorn(:,:,:) = 0.0 |
---|
695 | aridge(:,:,:) = 0.0 |
---|
696 | araft (:,:,:) = 0.0 |
---|
697 | hrmin(:,:,:) = 0.0 |
---|
698 | hrmax(:,:,:) = 0.0 |
---|
699 | hraft(:,:,:) = 0.0 |
---|
700 | krdg (:,:,:) = 1.0 |
---|
701 | |
---|
702 | ! ! Zero out categories with very small areas |
---|
703 | CALL lim_itd_me_zapsmall |
---|
704 | |
---|
705 | !------------------------------------------------------------------------------! |
---|
706 | ! 1) Participation function |
---|
707 | !------------------------------------------------------------------------------! |
---|
708 | |
---|
709 | ! Compute total area of ice plus open water. |
---|
710 | CALL lim_itd_me_asumr |
---|
711 | ! This is in general not equal to one |
---|
712 | ! because of divergence during transport |
---|
713 | |
---|
714 | ! Compute cumulative thickness distribution function |
---|
715 | ! Compute the cumulative thickness distribution function Gsum, |
---|
716 | ! where Gsum(n) is the fractional area in categories 0 to n. |
---|
717 | ! initial value (in h = 0) equals open water area |
---|
718 | |
---|
719 | Gsum(:,:,-1) = 0._wp |
---|
720 | |
---|
721 | DO jj = 1, jpj |
---|
722 | DO ji = 1, jpi |
---|
723 | IF( ato_i(ji,jj) > epsi11 ) THEN ; Gsum(ji,jj,0) = ato_i(ji,jj) |
---|
724 | ELSE ; Gsum(ji,jj,0) = 0._wp |
---|
725 | ENDIF |
---|
726 | END DO |
---|
727 | END DO |
---|
728 | |
---|
729 | ! for each value of h, you have to add ice concentration then |
---|
730 | DO jl = 1, jpl |
---|
731 | DO jj = 1, jpj |
---|
732 | DO ji = 1, jpi |
---|
733 | IF( a_i(ji,jj,jl) .GT. epsi11 ) THEN ; Gsum(ji,jj,jl) = Gsum(ji,jj,jl-1) + a_i(ji,jj,jl) |
---|
734 | ELSE ; Gsum(ji,jj,jl) = Gsum(ji,jj,jl-1) |
---|
735 | ENDIF |
---|
736 | END DO |
---|
737 | END DO |
---|
738 | END DO |
---|
739 | |
---|
740 | ! Normalize the cumulative distribution to 1 |
---|
741 | zworka(:,:) = 1._wp / Gsum(:,:,jpl) |
---|
742 | DO jl = 0, jpl |
---|
743 | Gsum(:,:,jl) = Gsum(:,:,jl) * zworka(:,:) |
---|
744 | END DO |
---|
745 | |
---|
746 | ! 1.3 Compute participation function a(h) = b(h).g(h) (athorn) |
---|
747 | !-------------------------------------------------------------------------------------------------- |
---|
748 | ! Compute the participation function athorn; this is analogous to |
---|
749 | ! a(h) = b(h)g(h) as defined in Thorndike et al. (1975). |
---|
750 | ! area lost from category n due to ridging/closing |
---|
751 | ! athorn(n) = total area lost due to ridging/closing |
---|
752 | ! assume b(h) = (2/Gstar) * (1 - G(h)/Gstar). |
---|
753 | ! |
---|
754 | ! The expressions for athorn are found by integrating b(h)g(h) between |
---|
755 | ! the category boundaries. |
---|
756 | !----------------------------------------------------------------- |
---|
757 | |
---|
758 | krdg_index = 1 |
---|
759 | |
---|
760 | IF( krdg_index == 0 ) THEN !--- Linear formulation (Thorndike et al., 1975) |
---|
761 | DO jl = 0, ice_cat_bounds(1,2) ! only undeformed ice participates |
---|
762 | DO jj = 1, jpj |
---|
763 | DO ji = 1, jpi |
---|
764 | IF( Gsum(ji,jj,jl) < Gstar) THEN |
---|
765 | athorn(ji,jj,jl) = Gstari * (Gsum(ji,jj,jl)-Gsum(ji,jj,jl-1)) * & |
---|
766 | (2.0 - (Gsum(ji,jj,jl-1)+Gsum(ji,jj,jl))*Gstari) |
---|
767 | ELSEIF (Gsum(ji,jj,jl-1) < Gstar) THEN |
---|
768 | athorn(ji,jj,jl) = Gstari * (Gstar-Gsum(ji,jj,jl-1)) * & |
---|
769 | (2.0 - (Gsum(ji,jj,jl-1)+Gstar)*Gstari) |
---|
770 | ELSE |
---|
771 | athorn(ji,jj,jl) = 0.0 |
---|
772 | ENDIF |
---|
773 | END DO ! ji |
---|
774 | END DO ! jj |
---|
775 | END DO ! jl |
---|
776 | |
---|
777 | ELSE !--- Exponential, more stable formulation (Lipscomb et al, 2007) |
---|
778 | ! |
---|
779 | zdummy = 1._wp / ( 1._wp - EXP(-astari) ) ! precompute exponential terms using Gsum as a work array |
---|
780 | |
---|
781 | DO jl = -1, jpl |
---|
782 | Gsum(:,:,jl) = EXP( -Gsum(:,:,jl) * astari ) * zdummy |
---|
783 | END DO !jl |
---|
784 | DO jl = 0, ice_cat_bounds(1,2) |
---|
785 | athorn(:,:,jl) = Gsum(:,:,jl-1) - Gsum(:,:,jl) |
---|
786 | END DO |
---|
787 | ! |
---|
788 | ENDIF ! krdg_index |
---|
789 | |
---|
790 | IF( raftswi == 1 ) THEN ! Ridging and rafting ice participation functions |
---|
791 | ! |
---|
792 | DO jl = 1, jpl |
---|
793 | DO jj = 1, jpj |
---|
794 | DO ji = 1, jpi |
---|
795 | IF ( athorn(ji,jj,jl) .GT. 0._wp ) THEN |
---|
796 | !!gm TANH( -X ) = - TANH( X ) so can be computed only 1 time.... |
---|
797 | aridge(ji,jj,jl) = ( TANH ( Craft * ( ht_i(ji,jj,jl) - hparmeter ) ) + 1.0 ) * 0.5 * athorn(ji,jj,jl) |
---|
798 | araft (ji,jj,jl) = ( TANH ( -Craft * ( ht_i(ji,jj,jl) - hparmeter ) ) + 1.0 ) * 0.5 * athorn(ji,jj,jl) |
---|
799 | IF ( araft(ji,jj,jl) < epsi06 ) araft(ji,jj,jl) = 0._wp |
---|
800 | aridge(ji,jj,jl) = MAX( athorn(ji,jj,jl) - araft(ji,jj,jl), 0.0 ) |
---|
801 | ENDIF ! athorn |
---|
802 | END DO ! ji |
---|
803 | END DO ! jj |
---|
804 | END DO ! jl |
---|
805 | |
---|
806 | ELSE ! raftswi = 0 |
---|
807 | ! |
---|
808 | DO jl = 1, jpl |
---|
809 | aridge(:,:,jl) = athorn(:,:,jl) |
---|
810 | END DO |
---|
811 | ! |
---|
812 | ENDIF |
---|
813 | |
---|
814 | IF ( raftswi == 1 ) THEN |
---|
815 | |
---|
816 | IF( MAXVAL(aridge + araft - athorn(:,:,1:jpl)) .GT. epsi11 ) THEN |
---|
817 | DO jl = 1, jpl |
---|
818 | DO jj = 1, jpj |
---|
819 | DO ji = 1, jpi |
---|
820 | IF ( aridge(ji,jj,jl) + araft(ji,jj,jl) - athorn(ji,jj,jl) .GT. & |
---|
821 | epsi11 ) THEN |
---|
822 | WRITE(numout,*) ' ALERTE 96 : wrong participation function ... ' |
---|
823 | WRITE(numout,*) ' ji, jj, jl : ', ji, jj, jl |
---|
824 | WRITE(numout,*) ' lat, lon : ', gphit(ji,jj), glamt(ji,jj) |
---|
825 | WRITE(numout,*) ' aridge : ', aridge(ji,jj,1:jpl) |
---|
826 | WRITE(numout,*) ' araft : ', araft(ji,jj,1:jpl) |
---|
827 | WRITE(numout,*) ' athorn : ', athorn(ji,jj,1:jpl) |
---|
828 | ENDIF |
---|
829 | END DO |
---|
830 | END DO |
---|
831 | END DO |
---|
832 | ENDIF |
---|
833 | |
---|
834 | ENDIF |
---|
835 | |
---|
836 | !----------------------------------------------------------------- |
---|
837 | ! 2) Transfer function |
---|
838 | !----------------------------------------------------------------- |
---|
839 | ! Compute max and min ridged ice thickness for each ridging category. |
---|
840 | ! Assume ridged ice is uniformly distributed between hrmin and hrmax. |
---|
841 | ! |
---|
842 | ! This parameterization is a modified version of Hibler (1980). |
---|
843 | ! The mean ridging thickness, hrmean, is proportional to hi^(0.5) |
---|
844 | ! and for very thick ridging ice must be >= krdgmin*hi |
---|
845 | ! |
---|
846 | ! The minimum ridging thickness, hrmin, is equal to 2*hi |
---|
847 | ! (i.e., rafting) and for very thick ridging ice is |
---|
848 | ! constrained by hrmin <= (hrmean + hi)/2. |
---|
849 | ! |
---|
850 | ! The maximum ridging thickness, hrmax, is determined by |
---|
851 | ! hrmean and hrmin. |
---|
852 | ! |
---|
853 | ! These modifications have the effect of reducing the ice strength |
---|
854 | ! (relative to the Hibler formulation) when very thick ice is |
---|
855 | ! ridging. |
---|
856 | ! |
---|
857 | ! aksum = net area removed/ total area removed |
---|
858 | ! where total area removed = area of ice that ridges |
---|
859 | ! net area removed = total area removed - area of new ridges |
---|
860 | !----------------------------------------------------------------- |
---|
861 | |
---|
862 | ! Transfer function |
---|
863 | DO jl = 1, jpl !all categories have a specific transfer function |
---|
864 | DO jj = 1, jpj |
---|
865 | DO ji = 1, jpi |
---|
866 | |
---|
867 | IF (a_i(ji,jj,jl) .GT. epsi11 .AND. athorn(ji,jj,jl) .GT. 0.0 ) THEN |
---|
868 | hi = v_i(ji,jj,jl) / a_i(ji,jj,jl) |
---|
869 | hrmean = MAX(SQRT(Hstar*hi), hi*krdgmin) |
---|
870 | hrmin(ji,jj,jl) = MIN(2.0*hi, 0.5*(hrmean + hi)) |
---|
871 | hrmax(ji,jj,jl) = 2.0*hrmean - hrmin(ji,jj,jl) |
---|
872 | hraft(ji,jj,jl) = kraft*hi |
---|
873 | krdg(ji,jj,jl) = hrmean / hi |
---|
874 | ELSE |
---|
875 | hraft(ji,jj,jl) = 0.0 |
---|
876 | hrmin(ji,jj,jl) = 0.0 |
---|
877 | hrmax(ji,jj,jl) = 0.0 |
---|
878 | krdg (ji,jj,jl) = 1.0 |
---|
879 | ENDIF |
---|
880 | |
---|
881 | END DO ! ji |
---|
882 | END DO ! jj |
---|
883 | END DO ! jl |
---|
884 | |
---|
885 | ! Normalization factor : aksum, ensures mass conservation |
---|
886 | aksum(:,:) = athorn(:,:,0) |
---|
887 | DO jl = 1, jpl |
---|
888 | aksum(:,:) = aksum(:,:) + aridge(:,:,jl) * ( 1._wp - 1._wp / krdg(:,:,jl) ) & |
---|
889 | & + araft (:,:,jl) * ( 1._wp - 1._wp / kraft ) |
---|
890 | END DO |
---|
891 | ! |
---|
892 | CALL wrk_dealloc( jpi,jpj, zworka ) |
---|
893 | CALL wrk_dealloc( jpi,jpj,jpl+2, Gsum, kkstart = -1 ) |
---|
894 | ! |
---|
895 | END SUBROUTINE lim_itd_me_ridgeprep |
---|
896 | |
---|
897 | |
---|
898 | SUBROUTINE lim_itd_me_ridgeshift( opning, closing_gross, msnow_mlt, esnow_mlt ) |
---|
899 | !!---------------------------------------------------------------------- |
---|
900 | !! *** ROUTINE lim_itd_me_icestrength *** |
---|
901 | !! |
---|
902 | !! ** Purpose : shift ridging ice among thickness categories of ice thickness |
---|
903 | !! |
---|
904 | !! ** Method : Remove area, volume, and energy from each ridging category |
---|
905 | !! and add to thicker ice categories. |
---|
906 | !!---------------------------------------------------------------------- |
---|
907 | REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: opning ! rate of opening due to divergence/shear |
---|
908 | REAL(wp), DIMENSION(jpi,jpj), INTENT(in ) :: closing_gross ! rate at which area removed, excluding area of new ridges |
---|
909 | REAL(wp), DIMENSION(jpi,jpj), INTENT(inout) :: msnow_mlt ! mass of snow added to ocean (kg m-2) |
---|
910 | REAL(wp), DIMENSION(jpi,jpj), INTENT(inout) :: esnow_mlt ! energy needed to melt snow in ocean (J m-2) |
---|
911 | ! |
---|
912 | CHARACTER (len=80) :: fieldid ! field identifier |
---|
913 | LOGICAL, PARAMETER :: l_conservation_check = .true. ! if true, check conservation (useful for debugging) |
---|
914 | ! |
---|
915 | LOGICAL :: neg_ato_i ! flag for ato_i(i,j) < -puny |
---|
916 | LOGICAL :: large_afrac ! flag for afrac > 1 |
---|
917 | LOGICAL :: large_afrft ! flag for afrac > 1 |
---|
918 | INTEGER :: ji, jj, jl, jl1, jl2, jk ! dummy loop indices |
---|
919 | INTEGER :: ij ! horizontal index, combines i and j loops |
---|
920 | INTEGER :: icells ! number of cells with aicen > puny |
---|
921 | REAL(wp) :: zeps, zindb, zsrdg2 ! local scalar |
---|
922 | REAL(wp) :: hL, hR, farea, zdummy, zdummy0, ztmelts ! left and right limits of integration |
---|
923 | |
---|
924 | INTEGER , POINTER, DIMENSION(:) :: indxi, indxj ! compressed indices |
---|
925 | |
---|
926 | REAL(wp), POINTER, DIMENSION(:,:) :: vice_init, vice_final ! ice volume summed over categories |
---|
927 | REAL(wp), POINTER, DIMENSION(:,:) :: eice_init, eice_final ! ice energy summed over layers |
---|
928 | |
---|
929 | REAL(wp), POINTER, DIMENSION(:,:,:) :: aicen_init, vicen_init ! ice area & volume before ridging |
---|
930 | REAL(wp), POINTER, DIMENSION(:,:,:) :: vsnon_init, esnon_init ! snow volume & energy before ridging |
---|
931 | REAL(wp), POINTER, DIMENSION(:,:,:) :: smv_i_init, oa_i_init ! ice salinity & age before ridging |
---|
932 | |
---|
933 | REAL(wp), POINTER, DIMENSION(:,:,:,:) :: eicen_init ! ice energy before ridging |
---|
934 | |
---|
935 | REAL(wp), POINTER, DIMENSION(:,:) :: afrac , fvol ! fraction of category area ridged & new ridge volume going to n2 |
---|
936 | REAL(wp), POINTER, DIMENSION(:,:) :: ardg1 , ardg2 ! area of ice ridged & new ridges |
---|
937 | REAL(wp), POINTER, DIMENSION(:,:) :: vsrdg , esrdg ! snow volume & energy of ridging ice |
---|
938 | REAL(wp), POINTER, DIMENSION(:,:) :: oirdg1, oirdg2 ! areal age content of ridged & rifging ice |
---|
939 | REAL(wp), POINTER, DIMENSION(:,:) :: dhr , dhr2 ! hrmax - hrmin & hrmax^2 - hrmin^2 |
---|
940 | |
---|
941 | REAL(wp), POINTER, DIMENSION(:,:) :: vrdg1 ! volume of ice ridged |
---|
942 | REAL(wp), POINTER, DIMENSION(:,:) :: vrdg2 ! volume of new ridges |
---|
943 | REAL(wp), POINTER, DIMENSION(:,:) :: vsw ! volume of seawater trapped into ridges |
---|
944 | REAL(wp), POINTER, DIMENSION(:,:) :: srdg1 ! sal*volume of ice ridged |
---|
945 | REAL(wp), POINTER, DIMENSION(:,:) :: srdg2 ! sal*volume of new ridges |
---|
946 | REAL(wp), POINTER, DIMENSION(:,:) :: smsw ! sal*volume of water trapped into ridges |
---|
947 | |
---|
948 | REAL(wp), POINTER, DIMENSION(:,:) :: afrft ! fraction of category area rafted |
---|
949 | REAL(wp), POINTER, DIMENSION(:,:) :: arft1 , arft2 ! area of ice rafted and new rafted zone |
---|
950 | REAL(wp), POINTER, DIMENSION(:,:) :: virft , vsrft ! ice & snow volume of rafting ice |
---|
951 | REAL(wp), POINTER, DIMENSION(:,:) :: esrft , smrft ! snow energy & salinity of rafting ice |
---|
952 | REAL(wp), POINTER, DIMENSION(:,:) :: oirft1, oirft2 ! areal age content of rafted ice & rafting ice |
---|
953 | |
---|
954 | REAL(wp), POINTER, DIMENSION(:,:,:) :: eirft ! ice energy of rafting ice |
---|
955 | REAL(wp), POINTER, DIMENSION(:,:,:) :: erdg1 ! enth*volume of ice ridged |
---|
956 | REAL(wp), POINTER, DIMENSION(:,:,:) :: erdg2 ! enth*volume of new ridges |
---|
957 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ersw ! enth of water trapped into ridges |
---|
958 | !!---------------------------------------------------------------------- |
---|
959 | |
---|
960 | CALL wrk_alloc( (jpi+1)*(jpj+1), indxi, indxj ) |
---|
961 | CALL wrk_alloc( jpi, jpj, vice_init, vice_final, eice_init, eice_final ) |
---|
962 | CALL wrk_alloc( jpi, jpj, afrac, fvol , ardg1, ardg2, vsrdg, esrdg, oirdg1, oirdg2, dhr, dhr2 ) |
---|
963 | CALL wrk_alloc( jpi, jpj, vrdg1, vrdg2, vsw , srdg1, srdg2, smsw ) |
---|
964 | CALL wrk_alloc( jpi, jpj, afrft, arft1, arft2, virft, vsrft, esrft, smrft, oirft1, oirft2 ) |
---|
965 | CALL wrk_alloc( jpi, jpj, jpl, aicen_init, vicen_init, vsnon_init, esnon_init, smv_i_init, oa_i_init ) |
---|
966 | CALL wrk_alloc( jpi, jpj, jkmax, eirft, erdg1, erdg2, ersw ) |
---|
967 | CALL wrk_alloc( jpi, jpj, jkmax, jpl, eicen_init ) |
---|
968 | |
---|
969 | ! Conservation check |
---|
970 | eice_init(:,:) = 0._wp |
---|
971 | |
---|
972 | IF( con_i ) THEN |
---|
973 | CALL lim_column_sum (jpl, v_i, vice_init ) |
---|
974 | WRITE(numout,*) ' vice_init : ', vice_init(jiindx,jjindx) |
---|
975 | CALL lim_column_sum_energy (jpl, nlay_i, e_i, eice_init ) |
---|
976 | WRITE(numout,*) ' eice_init : ', eice_init(jiindx,jjindx) |
---|
977 | ENDIF |
---|
978 | |
---|
979 | zeps = 1.e-20_wp |
---|
980 | |
---|
981 | !------------------------------------------------------------------------------- |
---|
982 | ! 1) Compute change in open water area due to closing and opening. |
---|
983 | !------------------------------------------------------------------------------- |
---|
984 | |
---|
985 | neg_ato_i = .false. |
---|
986 | |
---|
987 | DO jj = 1, jpj |
---|
988 | DO ji = 1, jpi |
---|
989 | ato_i(ji,jj) = ato_i(ji,jj) - athorn(ji,jj,0) * closing_gross(ji,jj) * rdt_ice & |
---|
990 | & + opning(ji,jj) * rdt_ice |
---|
991 | IF( ato_i(ji,jj) < -epsi11 ) THEN |
---|
992 | neg_ato_i = .TRUE. |
---|
993 | ELSEIF( ato_i(ji,jj) < 0._wp ) THEN ! roundoff error |
---|
994 | ato_i(ji,jj) = 0._wp |
---|
995 | ENDIF |
---|
996 | END DO !jj |
---|
997 | END DO !ji |
---|
998 | |
---|
999 | ! if negative open water area alert it |
---|
1000 | IF( neg_ato_i ) THEN ! there is a bug |
---|
1001 | DO jj = 1, jpj |
---|
1002 | DO ji = 1, jpi |
---|
1003 | IF( ato_i(ji,jj) < -epsi11 ) THEN |
---|
1004 | WRITE(numout,*) '' |
---|
1005 | WRITE(numout,*) 'Ridging error: ato_i < 0' |
---|
1006 | WRITE(numout,*) 'ato_i : ', ato_i(ji,jj) |
---|
1007 | ENDIF ! ato_i < -epsi11 |
---|
1008 | END DO |
---|
1009 | END DO |
---|
1010 | ENDIF |
---|
1011 | |
---|
1012 | !----------------------------------------------------------------- |
---|
1013 | ! 2) Save initial state variables |
---|
1014 | !----------------------------------------------------------------- |
---|
1015 | |
---|
1016 | DO jl = 1, jpl |
---|
1017 | aicen_init(:,:,jl) = a_i(:,:,jl) |
---|
1018 | vicen_init(:,:,jl) = v_i(:,:,jl) |
---|
1019 | vsnon_init(:,:,jl) = v_s(:,:,jl) |
---|
1020 | ! |
---|
1021 | smv_i_init(:,:,jl) = smv_i(:,:,jl) |
---|
1022 | oa_i_init (:,:,jl) = oa_i (:,:,jl) |
---|
1023 | END DO !jl |
---|
1024 | |
---|
1025 | esnon_init(:,:,:) = e_s(:,:,1,:) |
---|
1026 | |
---|
1027 | DO jl = 1, jpl |
---|
1028 | DO jk = 1, nlay_i |
---|
1029 | eicen_init(:,:,jk,jl) = e_i(:,:,jk,jl) |
---|
1030 | END DO |
---|
1031 | END DO |
---|
1032 | |
---|
1033 | ! |
---|
1034 | !----------------------------------------------------------------- |
---|
1035 | ! 3) Pump everything from ice which is being ridged / rafted |
---|
1036 | !----------------------------------------------------------------- |
---|
1037 | ! Compute the area, volume, and energy of ice ridging in each |
---|
1038 | ! category, along with the area of the resulting ridge. |
---|
1039 | |
---|
1040 | DO jl1 = 1, jpl !jl1 describes the ridging category |
---|
1041 | |
---|
1042 | !------------------------------------------------ |
---|
1043 | ! 3.1) Identify grid cells with nonzero ridging |
---|
1044 | !------------------------------------------------ |
---|
1045 | |
---|
1046 | icells = 0 |
---|
1047 | DO jj = 1, jpj |
---|
1048 | DO ji = 1, jpi |
---|
1049 | IF( aicen_init(ji,jj,jl1) > epsi11 .AND. athorn(ji,jj,jl1) > 0._wp & |
---|
1050 | .AND. closing_gross(ji,jj) > 0._wp ) THEN |
---|
1051 | icells = icells + 1 |
---|
1052 | indxi(icells) = ji |
---|
1053 | indxj(icells) = jj |
---|
1054 | ENDIF ! test on a_icen_init |
---|
1055 | END DO ! ji |
---|
1056 | END DO ! jj |
---|
1057 | |
---|
1058 | large_afrac = .false. |
---|
1059 | large_afrft = .false. |
---|
1060 | |
---|
1061 | !CDIR NODEP |
---|
1062 | DO ij = 1, icells |
---|
1063 | ji = indxi(ij) |
---|
1064 | jj = indxj(ij) |
---|
1065 | |
---|
1066 | !-------------------------------------------------------------------- |
---|
1067 | ! 3.2) Compute area of ridging ice (ardg1) and of new ridge (ardg2) |
---|
1068 | !-------------------------------------------------------------------- |
---|
1069 | |
---|
1070 | ardg1(ji,jj) = aridge(ji,jj,jl1)*closing_gross(ji,jj)*rdt_ice |
---|
1071 | arft1(ji,jj) = araft (ji,jj,jl1)*closing_gross(ji,jj)*rdt_ice |
---|
1072 | ardg2(ji,jj) = ardg1(ji,jj) / krdg(ji,jj,jl1) |
---|
1073 | arft2(ji,jj) = arft1(ji,jj) / kraft |
---|
1074 | |
---|
1075 | oirdg1(ji,jj)= aridge(ji,jj,jl1)*closing_gross(ji,jj)*rdt_ice |
---|
1076 | oirft1(ji,jj)= araft (ji,jj,jl1)*closing_gross(ji,jj)*rdt_ice |
---|
1077 | oirdg2(ji,jj)= oirdg1(ji,jj) / krdg(ji,jj,jl1) |
---|
1078 | oirft2(ji,jj)= oirft1(ji,jj) / kraft |
---|
1079 | |
---|
1080 | !--------------------------------------------------------------- |
---|
1081 | ! 3.3) Compute ridging /rafting fractions, make sure afrac <=1 |
---|
1082 | !--------------------------------------------------------------- |
---|
1083 | |
---|
1084 | afrac(ji,jj) = ardg1(ji,jj) / aicen_init(ji,jj,jl1) !ridging |
---|
1085 | afrft(ji,jj) = arft1(ji,jj) / aicen_init(ji,jj,jl1) !rafting |
---|
1086 | |
---|
1087 | IF (afrac(ji,jj) > 1.0 + epsi11) THEN !riging |
---|
1088 | large_afrac = .true. |
---|
1089 | ELSEIF (afrac(ji,jj) > 1.0) THEN ! roundoff error |
---|
1090 | afrac(ji,jj) = 1.0 |
---|
1091 | ENDIF |
---|
1092 | IF (afrft(ji,jj) > 1.0 + epsi11) THEN !rafting |
---|
1093 | large_afrft = .true. |
---|
1094 | ELSEIF (afrft(ji,jj) > 1.0) THEN ! roundoff error |
---|
1095 | afrft(ji,jj) = 1.0 |
---|
1096 | ENDIF |
---|
1097 | |
---|
1098 | !-------------------------------------------------------------------------- |
---|
1099 | ! 3.4) Subtract area, volume, and energy from ridging |
---|
1100 | ! / rafting category n1. |
---|
1101 | !-------------------------------------------------------------------------- |
---|
1102 | vrdg1(ji,jj) = vicen_init(ji,jj,jl1) * afrac(ji,jj) / ( 1._wp + ridge_por ) |
---|
1103 | vrdg2(ji,jj) = vrdg1(ji,jj) * ( 1. + ridge_por ) |
---|
1104 | vsw (ji,jj) = vrdg1(ji,jj) * ridge_por |
---|
1105 | |
---|
1106 | vsrdg(ji,jj) = vsnon_init(ji,jj,jl1) * afrac(ji,jj) |
---|
1107 | esrdg(ji,jj) = esnon_init(ji,jj,jl1) * afrac(ji,jj) |
---|
1108 | srdg1(ji,jj) = smv_i_init(ji,jj,jl1) * afrac(ji,jj) / ( 1._wp + ridge_por ) |
---|
1109 | srdg2(ji,jj) = smv_i_init(ji,jj,jl1) * afrac(ji,jj) |
---|
1110 | |
---|
1111 | ! rafting volumes, heat contents ... |
---|
1112 | virft(ji,jj) = vicen_init(ji,jj,jl1) * afrft(ji,jj) |
---|
1113 | vsrft(ji,jj) = vsnon_init(ji,jj,jl1) * afrft(ji,jj) |
---|
1114 | esrft(ji,jj) = esnon_init(ji,jj,jl1) * afrft(ji,jj) |
---|
1115 | smrft(ji,jj) = smv_i_init(ji,jj,jl1) * afrft(ji,jj) |
---|
1116 | |
---|
1117 | ! substract everything |
---|
1118 | a_i(ji,jj,jl1) = a_i(ji,jj,jl1) - ardg1(ji,jj) - arft1(ji,jj) |
---|
1119 | v_i(ji,jj,jl1) = v_i(ji,jj,jl1) - vrdg1(ji,jj) - virft(ji,jj) |
---|
1120 | v_s(ji,jj,jl1) = v_s(ji,jj,jl1) - vsrdg(ji,jj) - vsrft(ji,jj) |
---|
1121 | e_s(ji,jj,1,jl1) = e_s(ji,jj,1,jl1) - esrdg(ji,jj) - esrft(ji,jj) |
---|
1122 | oa_i(ji,jj,jl1) = oa_i(ji,jj,jl1) - oirdg1(ji,jj) - oirft1(ji,jj) |
---|
1123 | smv_i(ji,jj,jl1) = smv_i(ji,jj,jl1) - srdg1(ji,jj) - smrft(ji,jj) |
---|
1124 | |
---|
1125 | !----------------------------------------------------------------- |
---|
1126 | ! 3.5) Compute properties of new ridges |
---|
1127 | !----------------------------------------------------------------- |
---|
1128 | !------------- |
---|
1129 | ! Salinity |
---|
1130 | !------------- |
---|
1131 | smsw(ji,jj) = sss_m(ji,jj) * vsw(ji,jj) * rhoic / rau0 ! salt content of seawater frozen in voids |
---|
1132 | |
---|
1133 | zsrdg2 = srdg1(ji,jj) + smsw(ji,jj) ! salt content of new ridge |
---|
1134 | |
---|
1135 | srdg2(ji,jj) = MIN( s_i_max * vrdg2(ji,jj) , zsrdg2 ) ! impose a maximum salinity |
---|
1136 | |
---|
1137 | ! ! excess of salt is flushed into the ocean |
---|
1138 | sfx_mec(ji,jj) = sfx_mec(ji,jj) + ( zsrdg2 - srdg2(ji,jj) ) * rhoic * r1_rdtice |
---|
1139 | |
---|
1140 | rdm_ice(ji,jj) = rdm_ice(ji,jj) + vsw(ji,jj) * rhoic / rau0 ! increase in ice volume du to seawater frozen in voids |
---|
1141 | |
---|
1142 | !------------------------------------ |
---|
1143 | ! 3.6 Increment ridging diagnostics |
---|
1144 | !------------------------------------ |
---|
1145 | |
---|
1146 | ! jl1 looping 1-jpl |
---|
1147 | ! ij looping 1-icells |
---|
1148 | |
---|
1149 | dardg1dt (ji,jj) = dardg1dt(ji,jj) + ardg1(ji,jj) + arft1(ji,jj) |
---|
1150 | dardg2dt (ji,jj) = dardg2dt(ji,jj) + ardg2(ji,jj) + arft2(ji,jj) |
---|
1151 | diag_dyn_gr(ji,jj) = diag_dyn_gr(ji,jj) + ( vrdg2(ji,jj) + virft(ji,jj) ) * r1_rdtice |
---|
1152 | opening (ji,jj) = opening (ji,jj) + opning(ji,jj) * rdt_ice |
---|
1153 | |
---|
1154 | IF( con_i ) vice_init(ji,jj) = vice_init(ji,jj) + vrdg2(ji,jj) - vrdg1(ji,jj) |
---|
1155 | |
---|
1156 | !------------------------------------------ |
---|
1157 | ! 3.7 Put the snow somewhere in the ocean |
---|
1158 | !------------------------------------------ |
---|
1159 | ! Place part of the snow lost by ridging into the ocean. |
---|
1160 | ! Note that esnow_mlt < 0; the ocean must cool to melt snow. |
---|
1161 | ! If the ocean temp = Tf already, new ice must grow. |
---|
1162 | ! During the next time step, thermo_rates will determine whether |
---|
1163 | ! the ocean cools or new ice grows. |
---|
1164 | ! jl1 looping 1-jpl |
---|
1165 | ! ij looping 1-icells |
---|
1166 | |
---|
1167 | msnow_mlt(ji,jj) = msnow_mlt(ji,jj) + rhosn*vsrdg(ji,jj)*(1.0-fsnowrdg) & ! rafting included |
---|
1168 | & + rhosn*vsrft(ji,jj)*(1.0-fsnowrft) |
---|
1169 | |
---|
1170 | esnow_mlt(ji,jj) = esnow_mlt(ji,jj) + esrdg(ji,jj)*(1.0-fsnowrdg) & !rafting included |
---|
1171 | & + esrft(ji,jj)*(1.0-fsnowrft) |
---|
1172 | |
---|
1173 | !----------------------------------------------------------------- |
---|
1174 | ! 3.8 Compute quantities used to apportion ice among categories |
---|
1175 | ! in the n2 loop below |
---|
1176 | !----------------------------------------------------------------- |
---|
1177 | |
---|
1178 | ! jl1 looping 1-jpl |
---|
1179 | ! ij looping 1-icells |
---|
1180 | |
---|
1181 | dhr (ji,jj) = hrmax(ji,jj,jl1) - hrmin(ji,jj,jl1) |
---|
1182 | dhr2(ji,jj) = hrmax(ji,jj,jl1) * hrmax(ji,jj,jl1) - hrmin(ji,jj,jl1) * hrmin(ji,jj,jl1) |
---|
1183 | |
---|
1184 | END DO ! ij |
---|
1185 | |
---|
1186 | !-------------------------------------------------------------------- |
---|
1187 | ! 3.9 Compute ridging ice enthalpy, remove it from ridging ice and |
---|
1188 | ! compute ridged ice enthalpy |
---|
1189 | !-------------------------------------------------------------------- |
---|
1190 | DO jk = 1, nlay_i |
---|
1191 | !CDIR NODEP |
---|
1192 | DO ij = 1, icells |
---|
1193 | ji = indxi(ij) |
---|
1194 | jj = indxj(ij) |
---|
1195 | ! heat content of ridged ice |
---|
1196 | erdg1(ji,jj,jk) = eicen_init(ji,jj,jk,jl1) * afrac(ji,jj) / ( 1._wp + ridge_por ) |
---|
1197 | eirft(ji,jj,jk) = eicen_init(ji,jj,jk,jl1) * afrft(ji,jj) |
---|
1198 | e_i (ji,jj,jk,jl1) = e_i(ji,jj,jk,jl1) - erdg1(ji,jj,jk) - eirft(ji,jj,jk) |
---|
1199 | ! sea water heat content |
---|
1200 | ztmelts = - tmut * sss_m(ji,jj) + rtt |
---|
1201 | ! heat content per unit volume |
---|
1202 | zdummy0 = - rcp * ( sst_m(ji,jj) + rt0 - rtt ) * vsw(ji,jj) |
---|
1203 | |
---|
1204 | ! corrected sea water salinity |
---|
1205 | zindb = MAX( 0._wp , SIGN( 1._wp , vsw(ji,jj) - zeps ) ) |
---|
1206 | zdummy = zindb * ( srdg1(ji,jj) - srdg2(ji,jj) ) / MAX( ridge_por * vsw(ji,jj), zeps ) |
---|
1207 | |
---|
1208 | ztmelts = - tmut * zdummy + rtt |
---|
1209 | ersw(ji,jj,jk) = - rcp * ( ztmelts - rtt ) * vsw(ji,jj) |
---|
1210 | |
---|
1211 | ! heat flux |
---|
1212 | fheat_mec(ji,jj) = fheat_mec(ji,jj) + ( ersw(ji,jj,jk) - zdummy0 ) * r1_rdtice |
---|
1213 | |
---|
1214 | ! Correct dimensions to avoid big values |
---|
1215 | ersw(ji,jj,jk) = ersw(ji,jj,jk) * 1.e-09 |
---|
1216 | |
---|
1217 | ! Mutliply by ice volume, and divide by number of layers to get heat content in 10^9 J |
---|
1218 | ersw (ji,jj,jk) = ersw(ji,jj,jk) * area(ji,jj) * vsw(ji,jj) / nlay_i |
---|
1219 | |
---|
1220 | erdg2(ji,jj,jk) = erdg1(ji,jj,jk) + ersw(ji,jj,jk) |
---|
1221 | END DO ! ij |
---|
1222 | END DO !jk |
---|
1223 | |
---|
1224 | |
---|
1225 | IF( con_i ) THEN |
---|
1226 | DO jk = 1, nlay_i |
---|
1227 | !CDIR NODEP |
---|
1228 | DO ij = 1, icells |
---|
1229 | ji = indxi(ij) |
---|
1230 | jj = indxj(ij) |
---|
1231 | eice_init(ji,jj) = eice_init(ji,jj) + erdg2(ji,jj,jk) - erdg1(ji,jj,jk) |
---|
1232 | END DO ! ij |
---|
1233 | END DO !jk |
---|
1234 | ENDIF |
---|
1235 | |
---|
1236 | IF( large_afrac ) THEN ! there is a bug |
---|
1237 | !CDIR NODEP |
---|
1238 | DO ij = 1, icells |
---|
1239 | ji = indxi(ij) |
---|
1240 | jj = indxj(ij) |
---|
1241 | IF( afrac(ji,jj) > 1.0 + epsi11 ) THEN |
---|
1242 | WRITE(numout,*) '' |
---|
1243 | WRITE(numout,*) ' ardg > a_i' |
---|
1244 | WRITE(numout,*) ' ardg, aicen_init : ', ardg1(ji,jj), aicen_init(ji,jj,jl1) |
---|
1245 | ENDIF |
---|
1246 | END DO |
---|
1247 | ENDIF |
---|
1248 | IF( large_afrft ) THEN ! there is a bug |
---|
1249 | !CDIR NODEP |
---|
1250 | DO ij = 1, icells |
---|
1251 | ji = indxi(ij) |
---|
1252 | jj = indxj(ij) |
---|
1253 | IF( afrft(ji,jj) > 1.0 + epsi11 ) THEN |
---|
1254 | WRITE(numout,*) '' |
---|
1255 | WRITE(numout,*) ' arft > a_i' |
---|
1256 | WRITE(numout,*) ' arft, aicen_init : ', arft1(ji,jj), aicen_init(ji,jj,jl1) |
---|
1257 | ENDIF |
---|
1258 | END DO |
---|
1259 | ENDIF |
---|
1260 | |
---|
1261 | !------------------------------------------------------------------------------- |
---|
1262 | ! 4) Add area, volume, and energy of new ridge to each category jl2 |
---|
1263 | !------------------------------------------------------------------------------- |
---|
1264 | ! jl1 looping 1-jpl |
---|
1265 | DO jl2 = ice_cat_bounds(1,1), ice_cat_bounds(1,2) |
---|
1266 | ! over categories to which ridged ice is transferred |
---|
1267 | !CDIR NODEP |
---|
1268 | DO ij = 1, icells |
---|
1269 | ji = indxi(ij) |
---|
1270 | jj = indxj(ij) |
---|
1271 | |
---|
1272 | ! Compute the fraction of ridged ice area and volume going to |
---|
1273 | ! thickness category jl2. |
---|
1274 | ! Transfer area, volume, and energy accordingly. |
---|
1275 | |
---|
1276 | IF( hrmin(ji,jj,jl1) >= hi_max(jl2) .OR. & |
---|
1277 | hrmax(ji,jj,jl1) <= hi_max(jl2-1) ) THEN |
---|
1278 | hL = 0._wp |
---|
1279 | hR = 0._wp |
---|
1280 | ELSE |
---|
1281 | hL = MAX( hrmin(ji,jj,jl1), hi_max(jl2-1) ) |
---|
1282 | hR = MIN( hrmax(ji,jj,jl1), hi_max(jl2) ) |
---|
1283 | ENDIF |
---|
1284 | |
---|
1285 | ! fraction of ridged ice area and volume going to n2 |
---|
1286 | farea = ( hR - hL ) / dhr(ji,jj) |
---|
1287 | fvol(ji,jj) = ( hR*hR - hL*hL ) / dhr2(ji,jj) |
---|
1288 | |
---|
1289 | a_i (ji,jj ,jl2) = a_i (ji,jj ,jl2) + ardg2 (ji,jj) * farea |
---|
1290 | v_i (ji,jj ,jl2) = v_i (ji,jj ,jl2) + vrdg2 (ji,jj) * fvol(ji,jj) |
---|
1291 | v_s (ji,jj ,jl2) = v_s (ji,jj ,jl2) + vsrdg (ji,jj) * fvol(ji,jj) * fsnowrdg |
---|
1292 | e_s (ji,jj,1,jl2) = e_s (ji,jj,1,jl2) + esrdg (ji,jj) * fvol(ji,jj) * fsnowrdg |
---|
1293 | smv_i(ji,jj ,jl2) = smv_i(ji,jj ,jl2) + srdg2 (ji,jj) * fvol(ji,jj) |
---|
1294 | oa_i (ji,jj ,jl2) = oa_i (ji,jj ,jl2) + oirdg2(ji,jj) * farea |
---|
1295 | |
---|
1296 | END DO ! ij |
---|
1297 | |
---|
1298 | ! Transfer ice energy to category jl2 by ridging |
---|
1299 | DO jk = 1, nlay_i |
---|
1300 | !CDIR NODEP |
---|
1301 | DO ij = 1, icells |
---|
1302 | ji = indxi(ij) |
---|
1303 | jj = indxj(ij) |
---|
1304 | e_i(ji,jj,jk,jl2) = e_i(ji,jj,jk,jl2) + fvol(ji,jj)*erdg2(ji,jj,jk) |
---|
1305 | END DO |
---|
1306 | END DO |
---|
1307 | ! |
---|
1308 | END DO ! jl2 (new ridges) |
---|
1309 | |
---|
1310 | DO jl2 = ice_cat_bounds(1,1), ice_cat_bounds(1,2) |
---|
1311 | |
---|
1312 | !CDIR NODEP |
---|
1313 | DO ij = 1, icells |
---|
1314 | ji = indxi(ij) |
---|
1315 | jj = indxj(ij) |
---|
1316 | ! Compute the fraction of rafted ice area and volume going to |
---|
1317 | ! thickness category jl2, transfer area, volume, and energy accordingly. |
---|
1318 | ! |
---|
1319 | IF( hraft(ji,jj,jl1) <= hi_max(jl2) .AND. & |
---|
1320 | hraft(ji,jj,jl1) > hi_max(jl2-1) ) THEN |
---|
1321 | a_i (ji,jj ,jl2) = a_i (ji,jj ,jl2) + arft2 (ji,jj) |
---|
1322 | v_i (ji,jj ,jl2) = v_i (ji,jj ,jl2) + virft (ji,jj) |
---|
1323 | v_s (ji,jj ,jl2) = v_s (ji,jj ,jl2) + vsrft (ji,jj) * fsnowrft |
---|
1324 | e_s (ji,jj,1,jl2) = e_s (ji,jj,1,jl2) + esrft (ji,jj) * fsnowrft |
---|
1325 | smv_i(ji,jj ,jl2) = smv_i(ji,jj ,jl2) + smrft (ji,jj) |
---|
1326 | oa_i (ji,jj ,jl2) = oa_i (ji,jj ,jl2) + oirft2(ji,jj) |
---|
1327 | ENDIF ! hraft |
---|
1328 | ! |
---|
1329 | END DO ! ij |
---|
1330 | |
---|
1331 | ! Transfer rafted ice energy to category jl2 |
---|
1332 | DO jk = 1, nlay_i |
---|
1333 | !CDIR NODEP |
---|
1334 | DO ij = 1, icells |
---|
1335 | ji = indxi(ij) |
---|
1336 | jj = indxj(ij) |
---|
1337 | IF( hraft(ji,jj,jl1) <= hi_max(jl2) .AND. & |
---|
1338 | hraft(ji,jj,jl1) > hi_max(jl2-1) ) THEN |
---|
1339 | e_i(ji,jj,jk,jl2) = e_i(ji,jj,jk,jl2) + eirft(ji,jj,jk) |
---|
1340 | ENDIF |
---|
1341 | END DO ! ij |
---|
1342 | END DO !jk |
---|
1343 | |
---|
1344 | END DO ! jl2 |
---|
1345 | |
---|
1346 | END DO ! jl1 (deforming categories) |
---|
1347 | |
---|
1348 | ! Conservation check |
---|
1349 | IF ( con_i ) THEN |
---|
1350 | CALL lim_column_sum (jpl, v_i, vice_final) |
---|
1351 | fieldid = ' v_i : limitd_me ' |
---|
1352 | CALL lim_cons_check (vice_init, vice_final, 1.0e-6, fieldid) |
---|
1353 | WRITE(numout,*) ' vice_init : ', vice_init(jiindx,jjindx) |
---|
1354 | WRITE(numout,*) ' vice_final : ', vice_final(jiindx,jjindx) |
---|
1355 | |
---|
1356 | CALL lim_column_sum_energy (jpl, nlay_i, e_i, eice_final ) |
---|
1357 | fieldid = ' e_i : limitd_me ' |
---|
1358 | CALL lim_cons_check (eice_init, eice_final, 1.0e-2, fieldid) |
---|
1359 | WRITE(numout,*) ' eice_init : ', eice_init(jiindx,jjindx) |
---|
1360 | WRITE(numout,*) ' eice_final : ', eice_final(jiindx,jjindx) |
---|
1361 | ENDIF |
---|
1362 | ! |
---|
1363 | CALL wrk_dealloc( (jpi+1)*(jpj+1), indxi, indxj ) |
---|
1364 | CALL wrk_dealloc( jpi, jpj, vice_init, vice_final, eice_init, eice_final ) |
---|
1365 | CALL wrk_dealloc( jpi, jpj, afrac, fvol , ardg1, ardg2, vsrdg, esrdg, oirdg1, oirdg2, dhr, dhr2 ) |
---|
1366 | CALL wrk_dealloc( jpi, jpj, vrdg1, vrdg2, vsw , srdg1, srdg2, smsw ) |
---|
1367 | CALL wrk_dealloc( jpi, jpj, afrft, arft1, arft2, virft, vsrft, esrft, smrft, oirft1, oirft2 ) |
---|
1368 | CALL wrk_dealloc( jpi, jpj, jpl, aicen_init, vicen_init, vsnon_init, esnon_init, smv_i_init, oa_i_init ) |
---|
1369 | CALL wrk_dealloc( jpi, jpj, jkmax, eirft, erdg1, erdg2, ersw ) |
---|
1370 | CALL wrk_dealloc( jpi, jpj, jkmax, jpl, eicen_init ) |
---|
1371 | ! |
---|
1372 | END SUBROUTINE lim_itd_me_ridgeshift |
---|
1373 | |
---|
1374 | |
---|
1375 | SUBROUTINE lim_itd_me_asumr |
---|
1376 | !!----------------------------------------------------------------------------- |
---|
1377 | !! *** ROUTINE lim_itd_me_asumr *** |
---|
1378 | !! |
---|
1379 | !! ** Purpose : finds total fractional area |
---|
1380 | !! |
---|
1381 | !! ** Method : Find the total area of ice plus open water in each grid cell. |
---|
1382 | !! This is similar to the aggregate_area subroutine except that the |
---|
1383 | !! total area can be greater than 1, so the open water area is |
---|
1384 | !! included in the sum instead of being computed as a residual. |
---|
1385 | !!----------------------------------------------------------------------------- |
---|
1386 | INTEGER :: jl ! dummy loop index |
---|
1387 | !!----------------------------------------------------------------------------- |
---|
1388 | ! |
---|
1389 | asum(:,:) = ato_i(:,:) ! open water |
---|
1390 | DO jl = 1, jpl ! ice categories |
---|
1391 | asum(:,:) = asum(:,:) + a_i(:,:,jl) |
---|
1392 | END DO |
---|
1393 | ! |
---|
1394 | END SUBROUTINE lim_itd_me_asumr |
---|
1395 | |
---|
1396 | |
---|
1397 | SUBROUTINE lim_itd_me_init |
---|
1398 | !!------------------------------------------------------------------- |
---|
1399 | !! *** ROUTINE lim_itd_me_init *** |
---|
1400 | !! |
---|
1401 | !! ** Purpose : Physical constants and parameters linked |
---|
1402 | !! to the mechanical ice redistribution |
---|
1403 | !! |
---|
1404 | !! ** Method : Read the namiceitdme namelist |
---|
1405 | !! and check the parameters values |
---|
1406 | !! called at the first timestep (nit000) |
---|
1407 | !! |
---|
1408 | !! ** input : Namelist namiceitdme |
---|
1409 | !!------------------------------------------------------------------- |
---|
1410 | NAMELIST/namiceitdme/ ridge_scheme_swi, Cs, Cf, fsnowrdg, fsnowrft,& |
---|
1411 | Gstar, astar, & |
---|
1412 | Hstar, raftswi, hparmeter, Craft, ridge_por, & |
---|
1413 | sal_max_ridge, partfun_swi, transfun_swi, & |
---|
1414 | brinstren_swi |
---|
1415 | !!------------------------------------------------------------------- |
---|
1416 | ! |
---|
1417 | REWIND( numnam_ice ) ! read namiceitdme namelist |
---|
1418 | READ ( numnam_ice , namiceitdme) |
---|
1419 | ! |
---|
1420 | IF (lwp) THEN ! control print |
---|
1421 | WRITE(numout,*) |
---|
1422 | WRITE(numout,*)' lim_itd_me_init : ice parameters for mechanical ice redistribution ' |
---|
1423 | WRITE(numout,*)' ~~~~~~~~~~~~~~~' |
---|
1424 | WRITE(numout,*)' Switch choosing the ice redistribution scheme ridge_scheme_swi', ridge_scheme_swi |
---|
1425 | WRITE(numout,*)' Fraction of shear energy contributing to ridging Cs ', Cs |
---|
1426 | WRITE(numout,*)' Ratio of ridging work to PotEner change in ridging Cf ', Cf |
---|
1427 | WRITE(numout,*)' Fraction of snow volume conserved during ridging fsnowrdg ', fsnowrdg |
---|
1428 | WRITE(numout,*)' Fraction of snow volume conserved during ridging fsnowrft ', fsnowrft |
---|
1429 | WRITE(numout,*)' Fraction of total ice coverage contributing to ridging Gstar ', Gstar |
---|
1430 | WRITE(numout,*)' Equivalent to G* for an exponential part function astar ', astar |
---|
1431 | WRITE(numout,*)' Quantity playing a role in max ridged ice thickness Hstar ', Hstar |
---|
1432 | WRITE(numout,*)' Rafting of ice sheets or not raftswi ', raftswi |
---|
1433 | WRITE(numout,*)' Parmeter thickness (threshold between ridge-raft) hparmeter ', hparmeter |
---|
1434 | WRITE(numout,*)' Rafting hyperbolic tangent coefficient Craft ', Craft |
---|
1435 | WRITE(numout,*)' Initial porosity of ridges ridge_por ', ridge_por |
---|
1436 | WRITE(numout,*)' Maximum salinity of ridging ice sal_max_ridge ', sal_max_ridge |
---|
1437 | WRITE(numout,*)' Switch for part. function (0) linear (1) exponential partfun_swi ', partfun_swi |
---|
1438 | WRITE(numout,*)' Switch for tran. function (0) linear (1) exponential transfun_swi ', transfun_swi |
---|
1439 | WRITE(numout,*)' Switch for including brine volume in ice strength comp. brinstren_swi ', brinstren_swi |
---|
1440 | ENDIF |
---|
1441 | ! |
---|
1442 | END SUBROUTINE lim_itd_me_init |
---|
1443 | |
---|
1444 | |
---|
1445 | SUBROUTINE lim_itd_me_zapsmall |
---|
1446 | !!------------------------------------------------------------------- |
---|
1447 | !! *** ROUTINE lim_itd_me_zapsmall *** |
---|
1448 | !! |
---|
1449 | !! ** Purpose : Remove too small sea ice areas and correct salt fluxes |
---|
1450 | !! |
---|
1451 | !! history : |
---|
1452 | !! author: William H. Lipscomb, LANL |
---|
1453 | !! Nov 2003: Modified by Julie Schramm to conserve volume and energy |
---|
1454 | !! Sept 2004: Modified by William Lipscomb; replaced normalize_state with |
---|
1455 | !! additions to local freshwater, salt, and heat fluxes |
---|
1456 | !! 9.0, LIM3.0 - 02-2006 (M. Vancoppenolle) original code |
---|
1457 | !!------------------------------------------------------------------- |
---|
1458 | INTEGER :: ji, jj, jl, jk ! dummy loop indices |
---|
1459 | INTEGER :: icells ! number of cells with ice to zap |
---|
1460 | |
---|
1461 | REAL(wp), POINTER, DIMENSION(:,:) :: zmask ! 2D workspace |
---|
1462 | |
---|
1463 | !!gm REAL(wp) :: xtmp ! temporary variable |
---|
1464 | !!------------------------------------------------------------------- |
---|
1465 | |
---|
1466 | CALL wrk_alloc( jpi, jpj, zmask ) |
---|
1467 | |
---|
1468 | DO jl = 1, jpl |
---|
1469 | |
---|
1470 | !----------------------------------------------------------------- |
---|
1471 | ! Count categories to be zapped. |
---|
1472 | ! Abort model in case of negative area. |
---|
1473 | !----------------------------------------------------------------- |
---|
1474 | IF( MINVAL(a_i(:,:,jl)) .LT. -epsi11 .AND. ln_nicep ) THEN |
---|
1475 | DO jj = 1, jpj |
---|
1476 | DO ji = 1, jpi |
---|
1477 | IF ( a_i(ji,jj,jl) .LT. -epsi11 ) THEN |
---|
1478 | WRITE (numout,*) ' ALERTE 98 ' |
---|
1479 | WRITE (numout,*) ' Negative ice area: ji, jj, jl: ', ji, jj,jl |
---|
1480 | WRITE (numout,*) ' a_i ', a_i(ji,jj,jl) |
---|
1481 | ENDIF |
---|
1482 | END DO |
---|
1483 | END DO |
---|
1484 | ENDIF |
---|
1485 | |
---|
1486 | icells = 0 |
---|
1487 | zmask = 0._wp |
---|
1488 | DO jj = 1, jpj |
---|
1489 | DO ji = 1, jpi |
---|
1490 | IF( ( a_i(ji,jj,jl) .GE. -epsi11 .AND. a_i(ji,jj,jl) .LT. 0._wp ) .OR. & |
---|
1491 | & ( a_i(ji,jj,jl) .GT. 0._wp .AND. a_i(ji,jj,jl) .LE. 1.0e-11 ) .OR. & |
---|
1492 | & ( v_i(ji,jj,jl) == 0._wp .AND. a_i(ji,jj,jl) .GT. 0._wp ) .OR. & |
---|
1493 | & ( v_i(ji,jj,jl) .GT. 0._wp .AND. v_i(ji,jj,jl) .LT. 1.e-12 ) ) zmask(ji,jj) = 1._wp |
---|
1494 | END DO |
---|
1495 | END DO |
---|
1496 | IF( ln_nicep ) WRITE(numout,*) SUM(zmask), ' cells of ice zapped in the ocean ' |
---|
1497 | |
---|
1498 | !----------------------------------------------------------------- |
---|
1499 | ! Zap ice energy and use ocean heat to melt ice |
---|
1500 | !----------------------------------------------------------------- |
---|
1501 | |
---|
1502 | DO jk = 1, nlay_i |
---|
1503 | DO jj = 1 , jpj |
---|
1504 | DO ji = 1 , jpi |
---|
1505 | !!gm xtmp = e_i(ji,jj,jk,jl) / area(ji,jj) * r1_rdtice |
---|
1506 | !!gm xtmp = xtmp * unit_fac |
---|
1507 | ! fheat_res(ji,jj) = fheat_res(ji,jj) - xtmp |
---|
1508 | e_i(ji,jj,jk,jl) = e_i(ji,jj,jk,jl) * ( 1 - zmask(ji,jj) ) |
---|
1509 | END DO |
---|
1510 | END DO |
---|
1511 | END DO |
---|
1512 | |
---|
1513 | DO jj = 1 , jpj |
---|
1514 | DO ji = 1 , jpi |
---|
1515 | |
---|
1516 | !----------------------------------------------------------------- |
---|
1517 | ! Zap snow energy and use ocean heat to melt snow |
---|
1518 | !----------------------------------------------------------------- |
---|
1519 | ! xtmp = esnon(i,j,n) / dt ! < 0 |
---|
1520 | ! fhnet(i,j) = fhnet(i,j) + xtmp |
---|
1521 | ! fhnet_hist(i,j) = fhnet_hist(i,j) + xtmp |
---|
1522 | ! xtmp is greater than 0 |
---|
1523 | ! fluxes are positive to the ocean |
---|
1524 | ! here the flux has to be negative for the ocean |
---|
1525 | !!gm xtmp = ( rhosn*cpic*( rtt-t_s(ji,jj,1,jl) ) + rhosn*lfus ) * r1_rdtice |
---|
1526 | ! fheat_res(ji,jj) = fheat_res(ji,jj) - xtmp |
---|
1527 | |
---|
1528 | !!gm xtmp = ( rhosn*cpic*( rtt-t_s(ji,jj,1,jl) ) + rhosn*lfus ) * r1_rdtice !RB ??????? |
---|
1529 | |
---|
1530 | t_s(ji,jj,1,jl) = rtt * zmask(ji,jj) + t_s(ji,jj,1,jl) * ( 1 - zmask(ji,jj) ) |
---|
1531 | |
---|
1532 | !----------------------------------------------------------------- |
---|
1533 | ! zap ice and snow volume, add water and salt to ocean |
---|
1534 | !----------------------------------------------------------------- |
---|
1535 | |
---|
1536 | ! xtmp = (rhoi*vicen(i,j,n) + rhos*vsnon(i,j,n)) / dt |
---|
1537 | ! sfx_res(ji,jj) = sfx_res(ji,jj) + ( sss_m(ji,jj) ) & |
---|
1538 | ! * rhosn * v_s(ji,jj,jl) * r1_rdtice |
---|
1539 | ! sfx_res(ji,jj) = sfx_res(ji,jj) + ( sss_m(ji,jj) - sm_i(ji,jj,jl) ) & |
---|
1540 | ! * rhoic * v_i(ji,jj,jl) * r1_rdtice |
---|
1541 | ! sfx (i,j) = sfx (i,j) + xtmp |
---|
1542 | |
---|
1543 | ato_i(ji,jj) = a_i (ji,jj,jl) * zmask(ji,jj) + ato_i(ji,jj) |
---|
1544 | a_i (ji,jj,jl) = a_i (ji,jj,jl) * ( 1 - zmask(ji,jj) ) |
---|
1545 | v_i (ji,jj,jl) = v_i (ji,jj,jl) * ( 1 - zmask(ji,jj) ) |
---|
1546 | v_s (ji,jj,jl) = v_s (ji,jj,jl) * ( 1 - zmask(ji,jj) ) |
---|
1547 | t_su (ji,jj,jl) = t_su (ji,jj,jl) * ( 1 - zmask(ji,jj) ) + t_bo(ji,jj) * zmask(ji,jj) |
---|
1548 | oa_i (ji,jj,jl) = oa_i (ji,jj,jl) * ( 1 - zmask(ji,jj) ) |
---|
1549 | smv_i(ji,jj,jl) = smv_i(ji,jj,jl) * ( 1 - zmask(ji,jj) ) |
---|
1550 | ! |
---|
1551 | END DO |
---|
1552 | END DO |
---|
1553 | ! |
---|
1554 | END DO ! jl |
---|
1555 | ! |
---|
1556 | CALL wrk_dealloc( jpi, jpj, zmask ) |
---|
1557 | ! |
---|
1558 | END SUBROUTINE lim_itd_me_zapsmall |
---|
1559 | |
---|
1560 | #else |
---|
1561 | !!---------------------------------------------------------------------- |
---|
1562 | !! Default option Empty module NO LIM-3 sea-ice model |
---|
1563 | !!---------------------------------------------------------------------- |
---|
1564 | CONTAINS |
---|
1565 | SUBROUTINE lim_itd_me ! Empty routines |
---|
1566 | END SUBROUTINE lim_itd_me |
---|
1567 | SUBROUTINE lim_itd_me_icestrength |
---|
1568 | END SUBROUTINE lim_itd_me_icestrength |
---|
1569 | SUBROUTINE lim_itd_me_sort |
---|
1570 | END SUBROUTINE lim_itd_me_sort |
---|
1571 | SUBROUTINE lim_itd_me_init |
---|
1572 | END SUBROUTINE lim_itd_me_init |
---|
1573 | SUBROUTINE lim_itd_me_zapsmall |
---|
1574 | END SUBROUTINE lim_itd_me_zapsmall |
---|
1575 | #endif |
---|
1576 | !!====================================================================== |
---|
1577 | END MODULE limitd_me |
---|