1 | MODULE obcfla |
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2 | #if defined key_obc && defined key_dynspg_ts |
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3 | !!================================================================================= |
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4 | !! *** MODULE obcfla *** |
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5 | !! Ocean dynamics: Flather's algorithm at open boundaries for the time-splitting |
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6 | !!================================================================================= |
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7 | |
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8 | !!--------------------------------------------------------------------------------- |
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9 | !! obc_fla_ts : call the subroutine for each open boundary |
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10 | !! obc_fla_ts_east : Flather on the east open boundary velocities & ssh |
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11 | !! obc_fla_ts_west : Flather on the west open boundary velocities & ssh |
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12 | !! obc_fla_ts_north : Flather on the north open boundary velocities & ssh |
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13 | !! obc_fla_ts_south : Flather on the south open boundary velocities & ssh |
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14 | !!---------------------------------------------------------------------------------- |
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15 | |
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16 | !!---------------------------------------------------------------------------------- |
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17 | !! * Modules used |
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18 | USE oce ! ocean dynamics and tracers |
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19 | USE dom_oce ! ocean space and time domain |
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20 | USE dynspg_oce ! surface pressure gradient variables |
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21 | USE phycst ! physical constants |
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22 | USE obc_oce ! ocean open boundary conditions |
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23 | USE obcdta ! ocean open boundary conditions: climatology |
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24 | |
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25 | IMPLICIT NONE |
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26 | PRIVATE |
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27 | |
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28 | !! * Accessibility |
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29 | PUBLIC obc_fla_ts ! routine called in dynspg_ts (free surface time splitting case) |
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30 | |
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31 | !!--------------------------------------------------------------------------------- |
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32 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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33 | !! $Header$ |
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34 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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35 | !!--------------------------------------------------------------------------------- |
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36 | |
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37 | CONTAINS |
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38 | |
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39 | SUBROUTINE obc_fla_ts |
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40 | !!------------------------------------------------------------------------------ |
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41 | !! SUBROUTINE obc_fla_ts |
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42 | !! ********************** |
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43 | !! ** Purpose : |
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44 | !! Apply Flather's algorithm at open boundaries for the time-splitting |
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45 | !! free surface case (barotropic variables) |
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46 | !! |
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47 | !! This routine is called in dynspg_ts.F90 routine |
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48 | !! |
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49 | !! The logical variable lp_obc_east, and/or lp_obc_west, and/or lp_obc_north, |
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50 | !! and/or lp_obc_south allow the user to determine which boundary is an |
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51 | !! open one (must be done in the obc_par.F90 file). |
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52 | !! |
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53 | !! ** Reference : |
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54 | !! Flather, R. A., 1976, Mem. Soc. R. Sci. Liege, Ser. 6, 10, 141-164 |
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55 | !! |
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56 | !! History : |
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57 | !! 9.0 ! 05-12 (V. Garnier) original |
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58 | !!------------------------------------------------------------------------------ |
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59 | |
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60 | IF( lp_obc_east ) CALL obc_fla_ts_east |
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61 | IF( lp_obc_west ) CALL obc_fla_ts_west |
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62 | IF( lp_obc_north ) CALL obc_fla_ts_north |
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63 | IF( lp_obc_south ) CALL obc_fla_ts_south |
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64 | |
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65 | END SUBROUTINE obc_fla_ts |
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66 | |
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67 | |
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68 | SUBROUTINE obc_fla_ts_east |
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69 | !!------------------------------------------------------------------------------ |
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70 | !! *** SUBROUTINE obc_fla_ts_east *** |
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71 | !! |
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72 | !! ** Purpose : |
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73 | !! Apply Flather's algorithm on east OBC velocities ua, va |
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74 | !! Fix sea surface height (sshn_e) on east open boundary |
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75 | !! |
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76 | !! History : |
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77 | !! 9.0 ! 05-12 (V. Garnier) original |
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78 | !!------------------------------------------------------------------------------ |
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79 | !! * Local declaration |
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80 | INTEGER :: ji, jj, jk ! dummy loop indices |
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81 | !!------------------------------------------------------------------------------ |
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82 | |
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83 | DO ji = nie0, nie1 |
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84 | DO jk = 1, jpkm1 |
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85 | DO jj = 1, jpj |
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86 | ua_e(ji,jj) = ( ubtfoe(jj) + sqrt( grav*hu(ji,jj) ) & |
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87 | & * ( ( sshn_e(ji,jj) + sshn_e(ji+1,jj) ) * 0.5 & |
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88 | & - sshfoe(jj) ) ) * uemsk(jj,jk) |
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89 | END DO |
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90 | END DO |
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91 | END DO |
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92 | DO ji = nie0p1, nie1p1 |
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93 | DO jj = 1, jpj |
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94 | sshfoe_b(ji,jj) = sshfoe_b(ji,jj) + sqrt( grav*hur(ji,jj) ) & |
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95 | & * ( ( sshn_e(ji,jj) + sshn_e(ji+1,jj) ) * 0.5 & |
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96 | & - sshfoe(jj) ) * uemsk(jj,1) |
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97 | ssha_e(ji,jj) = ssha_e(ji,jj) * ( 1. - temsk(jj,1) ) & |
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98 | & + temsk(jj,1) * sshfoe(jj) |
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99 | va_e(ji,jj) = vbtfoe(jj) * uemsk(jj,jk) |
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100 | END DO |
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101 | END DO |
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102 | |
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103 | END SUBROUTINE obc_fla_ts_east |
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104 | |
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105 | |
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106 | SUBROUTINE obc_fla_ts_west |
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107 | !!------------------------------------------------------------------------------ |
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108 | !! *** SUBROUTINE obc_fla_ts_west *** |
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109 | !! |
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110 | !! ** Purpose : |
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111 | !! Apply Flather's algorithm on west OBC velocities ua, va |
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112 | !! Fix sea surface height (sshn_e) on west open boundary |
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113 | !! |
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114 | !! History : |
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115 | !! 9.0 ! 05-12 (V. Garnier) original |
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116 | !!------------------------------------------------------------------------------ |
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117 | !! * Local declaration |
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118 | INTEGER :: ji, jj, jk ! dummy loop indices |
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119 | !!------------------------------------------------------------------------------ |
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120 | |
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121 | DO ji = niw0, niw1 |
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122 | DO jk = 1, jpkm1 |
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123 | DO jj = 1, jpj |
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124 | ua_e(ji,jj) = ( ubtfow(jj) - sqrt( grav * hu(ji,jj) ) & |
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125 | & * ( ( sshn_e(ji,jj) + sshn_e(ji+1,jj) ) * 0.5 & |
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126 | & - sshfow(jj) ) ) * uwmsk(jj,jk) |
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127 | va_e(ji,jj) = vbtfow(jj) * uwmsk(jj,jk) |
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128 | END DO |
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129 | END DO |
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130 | DO jj = 1, jpj |
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131 | sshfow_b(ji,jj) = sshfow_b(ji,jj) - sqrt( grav * hur(ji,jj) ) & |
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132 | * ( ( sshn_e(ji,jj) + sshn_e(ji+1,jj) ) * 0.5 & |
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133 | - sshfow(jj) ) * uwmsk(jj,1) |
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134 | ssha_e(ji,jj) = ssha_e(ji,jj) * ( 1. - twmsk(jj,1) ) & |
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135 | & + twmsk(jj,1)*sshfow(jj) |
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136 | END DO |
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137 | END DO |
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138 | |
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139 | END SUBROUTINE obc_fla_ts_west |
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140 | |
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141 | SUBROUTINE obc_fla_ts_north |
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142 | !!------------------------------------------------------------------------------ |
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143 | !! SUBROUTINE obc_fla_ts_north |
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144 | !! ************************* |
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145 | !! ** Purpose : |
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146 | !! Apply Flather's algorithm on north OBC velocities ua, va |
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147 | !! Fix sea surface height (sshn_e) on north open boundary |
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148 | !! |
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149 | !! History : |
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150 | !! 9.0 ! 05-12 (V. Garnier) original |
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151 | !!------------------------------------------------------------------------------ |
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152 | !! * Local declaration |
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153 | INTEGER :: ji, jj, jk ! dummy loop indices |
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154 | !!------------------------------------------------------------------------------ |
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155 | |
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156 | DO jj = njn0, njn1 |
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157 | DO jk = 1, jpkm1 |
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158 | DO ji = 1, jpi |
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159 | va_e(ji,jj) = ( vbtfon(ji) + sqrt( grav * hv(ji,jj) ) & |
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160 | & * ( ( sshn_e(ji,jj) + sshn_e(ji,jj+1) ) * 0.5 & |
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161 | & - sshfon(ji) ) ) * vnmsk(ji,jk) |
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162 | END DO |
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163 | END DO |
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164 | END DO |
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165 | DO jj = njn0p1, njn1p1 |
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166 | DO ji = 1, jpi |
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167 | sshfon_b(ji,jj) = sshfon_b(ji,jj) + sqrt( grav * hvr(ji,jj) ) & |
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168 | & * ( ( sshn_e(ji,jj) + sshn_e(ji,jj+1) ) * 0.5 & |
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169 | & - sshfon(ji) ) * vnmsk(ji,1) |
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170 | ssha_e(ji,jj) = ssha_e(ji,jj) * ( 1. - tnmsk(ji,1) ) & |
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171 | & + sshfon(ji) * tnmsk(ji,1) |
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172 | ua_e(ji,jj) = ubtfon(ji) * vnmsk(ji,jk) |
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173 | END DO |
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174 | END DO |
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175 | |
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176 | END SUBROUTINE obc_fla_ts_north |
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177 | |
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178 | SUBROUTINE obc_fla_ts_south |
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179 | !!------------------------------------------------------------------------------ |
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180 | !! SUBROUTINE obc_fla_ts_south |
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181 | !! ************************* |
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182 | !! ** Purpose : |
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183 | !! Apply Flather's algorithm on south OBC velocities ua, va |
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184 | !! Fix sea surface height (sshn_e) on south open boundary |
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185 | !! |
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186 | !! History : |
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187 | !! 9.0 ! 05-12 (V. Garnier) original |
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188 | !!------------------------------------------------------------------------------ |
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189 | !! * Local declaration |
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190 | INTEGER :: ji, jj, jk ! dummy loop indices |
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191 | |
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192 | !!------------------------------------------------------------------------------ |
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193 | |
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194 | DO jj = njs0, njs1 |
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195 | DO jk = 1, jpkm1 |
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196 | DO ji = 1, jpi |
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197 | va_e(ji,jj) = ( vbtfos(ji) - sqrt( grav * hv(ji,jj) ) & |
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198 | & * ( ( sshn_e(ji,jj) + sshn_e(ji,jj+1) ) * 0.5 & |
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199 | & - sshfos(ji) ) ) * vsmsk(ji,jk) |
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200 | ua_e(ji,jj) = ubtfos(ji) * vsmsk(ji,jk) |
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201 | END DO |
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202 | END DO |
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203 | DO ji = 1, jpi |
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204 | sshfos_b(ji,jj) = sshfos_b(ji,jj) - sqrt( grav * hvr(ji,jj) ) & |
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205 | & * ( ( sshn_e(ji,jj) + sshn_e(ji,jj+1) ) * 0.5 & |
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206 | & - sshfos(ji) ) * vsmsk(ji,1) |
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207 | ssha_e(ji,jj) = ssha_e(ji,jj) * (1. - tsmsk(ji,1) ) & |
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208 | & + tsmsk(ji,1) * sshfos(ji) |
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209 | END DO |
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210 | END DO |
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211 | |
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212 | END SUBROUTINE obc_fla_ts_south |
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213 | #else |
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214 | !!================================================================================= |
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215 | !! *** MODULE obcfla *** |
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216 | !! Ocean dynamics: Flather's algorithm at open boundaries for the time-splitting |
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217 | !!================================================================================= |
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218 | CONTAINS |
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219 | |
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220 | SUBROUTINE obc_fla_ts |
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221 | WRITE(*,*) 'obc_fla_ts: You should not have seen this print! error?' |
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222 | END SUBROUTINE obc_fla_ts |
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223 | #endif |
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224 | |
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225 | END MODULE obcfla |
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