1 | MODULE icestp1d |
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2 | !!====================================================================== |
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3 | !! *** MODULE icestp1d *** |
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4 | !! Sea-Ice model : 1D LIM Sea ice model time-stepping |
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5 | !!====================================================================== |
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6 | !! History : 9.0 ! 04-10 (C. Ethe) from icestp, 1D configuration |
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7 | !!---------------------------------------------------------------------- |
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8 | #if defined key_cfg_1d && defined key_lim2 |
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9 | !!---------------------------------------------------------------------- |
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10 | !! 'key_cfg_1d' .AND. 1D Configuration |
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11 | !! 'key_lim2' Lim sea-ice model |
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12 | !!---------------------------------------------------------------------- |
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13 | !!---------------------------------------------------------------------- |
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14 | !! ice_stp_1d : sea-ice model time-stepping |
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15 | !!---------------------------------------------------------------------- |
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16 | USE dom_oce ! ocean space and time domain |
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17 | USE oce ! dynamics and tracers variables |
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18 | USE in_out_manager ! I/O manager |
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19 | USE ice_oce ! ice variables |
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20 | USE dom_ice_2 ! LIM sea-ice domain |
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21 | USE sbc_oce ! surface boundary condition: ocean |
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22 | USE sbc_ice ! surface boundary condition: ice |
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23 | USE daymod ! calendar |
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24 | USE phycst ! Define parameters for the routines |
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25 | USE ice_2 ! ice variables |
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26 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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27 | USE limthd_2 |
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28 | USE limwri_2 |
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29 | USE limrst_2 |
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30 | |
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31 | USE tradmp ! damping salinity trend |
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32 | USE dtatem ! ocean temperature data |
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33 | USE dtasal ! ocean salinity data |
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34 | USE ocfzpt ! surface ocean freezing point |
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35 | USE prtctl ! Print control |
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36 | |
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37 | |
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38 | IMPLICIT NONE |
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39 | PRIVATE |
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40 | |
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41 | PUBLIC ice_stp_1d ! called by step.F90 |
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42 | |
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43 | !! * Substitutions |
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44 | # include "domzgr_substitute.h90" |
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45 | # include "vectopt_loop_substitute.h90" |
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46 | !!---------------------------------------------------------------------- |
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47 | !! LIM 2.0 , UCL-LOCEAN-IPSL (2006) |
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48 | !! $Id$ |
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49 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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50 | !!---------------------------------------------------------------------- |
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51 | |
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52 | CONTAINS |
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53 | |
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54 | SUBROUTINE ice_stp_1d ( kt ) |
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55 | !!--------------------------------------------------------------------- |
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56 | !! *** ROUTINE ice_stp_1d *** |
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57 | !! |
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58 | !! ** Purpose : Louvain la Neuve Sea Ice Model time stepping |
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59 | !! |
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60 | !! ** Action : - call the ice dynamics routine |
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61 | !! - call the ice advection/diffusion routine |
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62 | !! - call the ice thermodynamics routine |
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63 | !! - call the routine that computes mass and |
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64 | !! heat fluxes at the ice/ocean interface |
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65 | !! - save the outputs |
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66 | !! - save the outputs for restart when necessary |
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67 | !!---------------------------------------------------------------------- |
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68 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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69 | |
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70 | INTEGER :: ji, jj ! dummy loop indices |
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71 | REAL(wp) :: ztair2 ! temporary scalar |
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72 | REAL(wp), DIMENSION(jpi,jpj) :: zsss_io, zsss2_io, zsss3_io ! tempory workspaces |
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73 | !!---------------------------------------------------------------------- |
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74 | |
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75 | IF( kt == nit000 ) THEN |
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76 | IF(lwp) WRITE(numout,*) |
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77 | IF(lwp) WRITE(numout,*) 'ice_stp_1d : Louvain la Neuve Ice Model (LIM)' |
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78 | IF(lwp) WRITE(numout,*) '~~~~~~~ forced case using bulk formulea' |
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79 | ! Initialize fluxes fields |
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80 | gtaux(:,:) = 0.e0 |
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81 | gtauy(:,:) = 0.e0 |
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82 | ENDIF |
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83 | |
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84 | ! Temperature , salinity and horizonta wind |
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85 | ! sst_io and sss_io, u_io and v_io are initialized at nit000 in limistate.F90 (or limrst.F90) with : |
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86 | ! sst_io = sst_io + (nfice - 1) * (tn(:,:,1)+rt0 ) |
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87 | ! sss_io = sss_io + (nfice - 1) * sn(:,:,1) |
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88 | ! u_io = u_io + (nfice - 1) * un(:,:,1) |
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89 | ! v_io = v_io + (nfice - 1) * vn(:,:,1) |
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90 | ! cumulate fields |
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91 | ! |
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92 | sst_io(:,:) = sst_io(:,:) + tn(:,:,1) + rt0 |
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93 | sss_io(:,:) = sss_io(:,:) + sn(:,:,1) |
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94 | u_io (:,:) = u_io (:,:) + un(:,:,1) |
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95 | v_io (:,:) = v_io (:,:) + vn(:,:,1) |
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96 | |
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97 | |
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98 | IF( MOD( kt-1, nfice ) == 0 ) THEN |
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99 | |
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100 | ! The LIM model is going to be call |
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101 | sst_io(:,:) = sst_io(:,:) / FLOAT( nfice ) * tmask(:,:,1) |
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102 | sss_io(:,:) = sss_io(:,:) / FLOAT( nfice ) |
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103 | u_io (:,:) = u_io (:,:) / FLOAT( nfice ) |
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104 | v_io (:,:) = v_io (:,:) / FLOAT( nfice ) |
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105 | gtaux (:,:) = utau (:,:) |
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106 | gtauy (:,:) = vtau (:,:) |
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107 | |
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108 | zsss_io (:,:) = SQRT( sss_io(:,:) ) |
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109 | zsss2_io(:,:) = sss_io(:,:) * sss_io(:,:) |
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110 | zsss3_io(:,:) = zsss_io(:,:) * zsss_io(:,:) * zsss_io(:,:) |
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111 | |
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112 | DO jj = 1, jpj |
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113 | DO ji = 1, jpi |
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114 | tfu(ji,jj) = ABS ( rt0 - 0.0575 * sss_io(ji,jj) & |
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115 | & + 1.710523e-03 * zsss3_io(ji,jj) & |
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116 | & - 2.154996e-04 * zsss2_io(ji,jj) ) * tms(ji,jj) |
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117 | END DO |
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118 | END DO |
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119 | |
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120 | |
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121 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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122 | CALL prt_ctl_info('Ice Forcings ') |
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123 | CALL prt_ctl(tab2d_1=qsr_oce ,clinfo1=' qsr_oce : ', tab2d_2=qsr_ice , clinfo2=' qsr_ice : ') |
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124 | CALL prt_ctl(tab2d_1=qnsr_oce,clinfo1=' qnsr_oce : ', tab2d_2=qnsr_ice, clinfo2=' qnsr_ice : ') |
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125 | CALL prt_ctl(tab2d_1=evap ,clinfo1=' evap : ') |
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126 | CALL prt_ctl(tab2d_1=tprecip ,clinfo1=' precip : ', tab2d_2=sprecip , clinfo2=' Snow : ') |
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127 | CALL prt_ctl(tab2d_1=gtaux ,clinfo1=' u-stress : ', tab2d_2=gtauy , clinfo2=' v-stress : ') |
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128 | CALL prt_ctl(tab2d_1=sst_io ,clinfo1=' sst : ', tab2d_2=sss_io , clinfo2=' sss : ') |
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129 | CALL prt_ctl(tab2d_1=u_io ,clinfo1=' u_io : ', tab2d_2=v_io , clinfo2=' v_io : ') |
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130 | CALL prt_ctl(tab2d_1=hsnif ,clinfo1=' hsnif 1 : ', tab2d_2=hicif , clinfo2=' hicif : ') |
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131 | CALL prt_ctl(tab2d_1=frld ,clinfo1=' frld 1 : ', tab2d_2=sist , clinfo2=' sist : ') |
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132 | ENDIF |
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133 | |
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134 | DO jj = 1, jpj |
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135 | DO ji = 1, jpi |
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136 | tio_u(ji,jj) = - gtaux(ji,jj) / rau0 |
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137 | tio_v(ji,jj) = - gtauy(ji,jj) / rau0 |
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138 | ztair2 = gtaux(ji,jj) * gtaux(ji,jj) + gtauy(ji,jj) * gtauy(ji,jj) |
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139 | ust2s(ji,jj) = ( SQRT( ztair2 ) / rau0 ) * tms(ji,jj) |
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140 | END DO |
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141 | END DO |
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142 | |
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143 | ! !-----------------------! |
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144 | CALL lim_rst_opn( kt ) ! Open Ice restart file ! |
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145 | ! !-----------------------! |
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146 | |
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147 | ! !--------------------! |
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148 | CALL lim_thd( kt ) ! Ice thermodynamics ! |
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149 | ! !--------------------! |
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150 | IF(ln_ctl) THEN |
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151 | CALL prt_ctl(tab2d_1=hsnif ,clinfo1=' hsnif 2 : ', tab2d_2=hicif , clinfo2=' hicif : ') |
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152 | CALL prt_ctl(tab2d_1=frld ,clinfo1=' frld 2 : ', tab2d_2=sist , clinfo2=' sist : ') |
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153 | CALL prt_ctl(tab2d_1=u_io ,clinfo1=' u_io 4 : ', tab2d_2=v_io , clinfo2=' v_io : ') |
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154 | CALL prt_ctl(tab2d_1=tio_u ,clinfo1=' tio_u 4 : ', tab2d_2=tio_v , clinfo2=' tio_v : ') |
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155 | ENDIF |
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156 | |
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157 | |
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158 | |
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159 | ! Mass and heat fluxes from ice to ocean |
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160 | ! !------------------------------! |
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161 | CALL lim_flx ! Ice/Ocean Mass & Heat fluxes ! |
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162 | ! !------------------------------! |
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163 | |
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164 | IF(ln_ctl) THEN |
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165 | CALL prt_ctl(tab2d_1=hsnif ,clinfo1=' hsnif 7 : ', tab2d_2=hicif , clinfo2=' hicif : ') |
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166 | CALL prt_ctl(tab2d_1=frld ,clinfo1=' frld 7 : ', tab2d_2=sist , clinfo2=' sist : ') |
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167 | CALL prt_ctl(tab2d_1=tio_u ,clinfo1=' tio_u 7 : ', tab2d_2=tio_v , clinfo2=' tio_v : ') |
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168 | ENDIF |
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169 | ! !-------------! |
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170 | CALL lim_wri( kt ) ! Ice outputs ! |
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171 | ! !-------------! |
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172 | |
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173 | ! !------------------------! |
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174 | IF( lrst_ice ) CALL lim_rst_write( kt ) ! Write Ice restart file ! |
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175 | ! !------------------------! |
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176 | |
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177 | ! Re-initialization of forcings |
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178 | qsr_oce (:,:) = 0.e0 |
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179 | qsr_ice (:,:) = 0.e0 |
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180 | qnsr_oce(:,:) = 0.e0 |
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181 | qnsr_ice(:,:) = 0.e0 |
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182 | dqns_ice(:,:) = 0.e0 |
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183 | tprecip (:,:) = 0.e0 |
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184 | sprecip (:,:) = 0.e0 |
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185 | qla_ice (:,:) = 0.e0 |
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186 | dqla_ice(:,:) = 0.e0 |
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187 | fr1_i0 (:,:) = 0.e0 |
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188 | fr2_i0 (:,:) = 0.e0 |
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189 | evap (:,:) = 0.e0 |
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190 | |
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191 | CALL oce_sbc_1d ( kt ) |
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192 | |
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193 | ENDIF |
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194 | |
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195 | END SUBROUTINE ice_stp_1d |
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196 | |
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197 | |
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198 | SUBROUTINE oce_sbc_1d( kt ) |
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199 | !!--------------------------------------------------------------------- |
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200 | !! *** ROUTINE oce_sbc_1d *** |
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201 | !! |
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202 | !! ** Purpose : - Ocean surface boundary conditions with LIM sea-ice |
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203 | !! model in forced mode using bulk formulea |
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204 | !!---------------------------------------------------------------------- |
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205 | INTEGER, INTENT(in) :: kt ! ocean time step |
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206 | ! |
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207 | INTEGER :: ji, jj ! dummy loop indices |
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208 | REAL(wp) :: ztxy |
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209 | !!---------------------------------------------------------------------- |
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210 | |
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211 | ! 1. initialization to zero at kt = nit000 |
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212 | ! --------------------------------------- |
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213 | |
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214 | IF( kt == nit000 ) THEN |
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215 | qsr (:,:) = 0.e0 |
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216 | qns (:,:) = 0.e0 |
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217 | qrp (:,:) = 0.e0 |
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218 | emp (:,:) = 0.e0 |
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219 | emps (:,:) = 0.e0 |
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220 | erp (:,:) = 0.e0 |
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221 | #if ! defined key_dynspg_rl |
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222 | dmp (:,:) = 0.e0 |
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223 | #endif |
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224 | ENDIF |
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225 | |
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226 | CALL oce_sbc_dmp ! Computation of internal and evaporation damping terms |
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227 | |
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228 | ! Surface Ocean fluxes |
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229 | ! ==================== |
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230 | |
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231 | ! Surface heat flux (W/m2) |
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232 | ! ----------------- |
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233 | |
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234 | qns (:,:) = fnsolar(:,:) ! non solar heat flux |
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235 | qsr (:,:) = fsolar(:,:) ! solar flux |
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236 | |
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237 | #if ! defined key_dynspg_rl |
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238 | ! total concentration/dilution effect (use on SSS) |
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239 | emps(:,:) = fmass(:,:) + fsalt(:,:) + runoff(:,:) + erp(:,:) + empold |
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240 | |
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241 | ! total volume flux (use on sea-surface height) |
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242 | emp (:,:) = fmass(:,:) - dmp(:,:) + runoff(:,:) + erp(:,:) + empold |
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243 | #else |
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244 | ! Rigid-lid (emp=emps=E-P-R+Erp) |
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245 | emps(:,:) = fmass(:,:) + fsalt(:,:) + runoff(:,:) + erp(:,:) ! freshwater flux |
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246 | emp (:,:) = emps(:,:) |
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247 | |
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248 | #endif |
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249 | |
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250 | ! Surface stress |
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251 | ! -------------- |
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252 | |
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253 | ! update the stress beloww sea-ice area |
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254 | DO jj = 1, jpjm1 |
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255 | DO ji = 1, fs_jpim1 ! vertor opt. |
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256 | ztxy = freezn(ji,jj) ! ice/ocean indicator at T-points |
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257 | utau(ji,jj) = (1.-ztxy) * utau(ji,jj) + ztxy * ftaux(ji,jj) ! stress at the ocean surface |
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258 | vtau(ji,jj) = (1.-ztxy) * vtau(ji,jj) + ztxy * ftauy(ji,jj) |
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259 | END DO |
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260 | END DO |
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261 | |
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262 | ! boundary condition on the stress (utau,vtau) |
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263 | CALL lbc_lnk( utau, 'U', -1. ) |
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264 | CALL lbc_lnk( vtau, 'V', -1. ) |
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265 | |
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266 | ! Re-initialization of fluxes |
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267 | sst_io(:,:) = 0.e0 |
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268 | sss_io(:,:) = 0.e0 |
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269 | u_io (:,:) = 0.e0 |
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270 | v_io (:,:) = 0.e0 |
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271 | ! |
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272 | END SUBROUTINE oce_sbc_1d |
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273 | |
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274 | #if defined key_dtasal |
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275 | !!---------------------------------------------------------------------- |
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276 | !! 'key_dtasal' salinity data |
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277 | !!---------------------------------------------------------------------- |
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278 | SUBROUTINE oce_sbc_dmp |
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279 | !!--------------------------------------------------------------------- |
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280 | !! *** ROUTINE oce_sbc_dmp *** |
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281 | !! |
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282 | !! ** Purpose : Computation of internal and evaporation damping terms |
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283 | !! for ocean surface boundary conditions |
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284 | !!---------------------------------------------------------------------- |
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285 | INTEGER :: ji, jj ! dummy loop indices |
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286 | REAL(wp) :: zerp, zsrp |
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287 | #if ! defined key_dynspg_rl |
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288 | REAL(wp) :: zwei |
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289 | REAL(wp) :: zerpplus(jpi,jpj), zerpminus(jpi,jpj) |
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290 | REAL(wp) :: zplus, zminus, zadefi |
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291 | # if defined key_tradmp |
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292 | INTEGER jk |
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293 | REAL(wp), DIMENSION(jpi,jpj) :: zstrdmp |
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294 | # endif |
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295 | #endif |
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296 | !!---------------------------------------------------------------------- |
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297 | |
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298 | ! sea ice indicator (1 or 0) |
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299 | DO jj = 1, jpj |
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300 | DO ji = 1, jpi |
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301 | freezn(ji,jj) = MAX(0., SIGN(1., freeze(ji,jj)-rsmall) ) |
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302 | END DO |
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303 | END DO |
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304 | |
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305 | ! Initialisation |
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306 | ! -------------- |
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307 | ! Restoring coefficients on SST and SSS |
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308 | zsrp = dqdt0 * ro0cpr * rauw ! (Kg/m2/s) |
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309 | |
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310 | #if ! defined key_dynspg_rl |
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311 | ! Free-surface |
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312 | |
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313 | ! Internal damping |
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314 | # if defined key_tradmp |
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315 | ! Vertical mean of dampind trend (computed in tradmp module) |
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316 | zstrdmp(:,:) = 0.e0 |
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317 | DO jk = 1, jpk |
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318 | zstrdmp(:,:) = zstrdmp(:,:) + strdmp(:,:,jk) * fse3t(:,:,jk) |
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319 | END DO |
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320 | ! volume flux associated to internal damping to climatology |
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321 | dmp(:,:) = zstrdmp(:,:) * rauw / ( sss_io(:,:) + 1.e-20 ) |
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322 | # else |
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323 | dmp(:,:) = 0.e0 ! No internal damping |
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324 | # endif |
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325 | |
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326 | ! evaporation damping term ( Surface restoring ) |
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327 | zerpplus (:,:) = 0.e0 |
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328 | zerpminus(:,:) = 0.e0 |
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329 | zplus = 15. / rday |
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330 | zminus = -15. / rday |
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331 | |
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332 | DO jj = 1, jpj |
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333 | DO ji = 1, jpi |
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334 | zerp = ( 1. - 2.*upsrnfh(ji,jj) ) * zsrp & |
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335 | & * ( sss_io(ji,jj) - s_dta(ji,jj,1) ) & |
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336 | & / ( sss_io(ji,jj) + 1.e-20 ) |
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337 | erp(ji,jj) = zerp |
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338 | zerpplus (ji,jj) = MAX( erp(ji,jj), 0.e0 ) |
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339 | zerpminus(ji,jj) = MIN( erp(ji,jj), 0.e0 ) |
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340 | END DO |
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341 | END DO |
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342 | |
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343 | aplus = 0.e0 |
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344 | aminus = 0.e0 |
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345 | DO jj = 1, jpj |
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346 | DO ji = 1, jpi |
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347 | zwei = e1t(ji,jj) * e2t(ji,jj) * tmask_i(ji,jj) |
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348 | aplus = aplus + zerpplus (ji,jj) * zwei |
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349 | aminus = aminus - zerpminus(ji,jj) * zwei |
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350 | END DO |
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351 | END DO |
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352 | |
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353 | IF(ln_ctl) WRITE(numout,*) ' oce_sbc_dmp : a+ = ', aplus, ' a- = ', aminus |
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354 | #else |
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355 | ! Rigid-lid (emp=emps=E-P-R+Erp) |
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356 | |
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357 | erp(:,:) = ( 1. - freezn(:,:) ) * zsrp & ! surface restoring term |
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358 | & * ( sss_io(:,:) - s_dta(:,:,1) ) & |
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359 | & / ( sss_io(:,:) + 1.e-20 ) |
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360 | #endif |
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361 | |
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362 | END SUBROUTINE oce_sbc_dmp |
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363 | |
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364 | #else |
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365 | !!---------------------------------------------------------------------- |
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366 | !! Dummy routine NO salinity data |
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367 | !!---------------------------------------------------------------------- |
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368 | SUBROUTINE oce_sbc_dmp ! Dummy routine |
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369 | WRITE(*,*) 'oce_sbc_dmp: you should not have seen that print! error?' |
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370 | END SUBROUTINE oce_sbc_dmp |
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371 | #endif |
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372 | #else |
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373 | !!---------------------------------------------------------------------- |
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374 | !! Default option Dummy module NO 1D && NO LIM sea-ice model |
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375 | !!---------------------------------------------------------------------- |
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376 | CONTAINS |
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377 | SUBROUTINE ice_stp_1d ( kt ) ! Dummy routine |
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378 | WRITE(*,*) 'ice_stp_1d: You should not have seen this print! error?', kt |
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379 | END SUBROUTINE ice_stp_1d |
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380 | SUBROUTINE oce_sbc_1d ( kt ) ! Dummy routine |
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381 | WRITE(*,*) 'oce_sbc_1d: You should not have seen this print! error?', kt |
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382 | END SUBROUTINE oce_sbc_1d |
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383 | #endif |
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384 | |
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385 | !!====================================================================== |
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386 | END MODULE icestp1d |
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