1 | MODULE obcdyn |
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2 | #if defined key_obc |
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3 | !!================================================================================= |
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4 | !! *** MODULE obcdyn *** |
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5 | !! Ocean dynamics: Radiation of velocities on each open boundary |
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6 | !!================================================================================= |
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7 | |
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8 | !!--------------------------------------------------------------------------------- |
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9 | !! obc_dyn : call the subroutine for each open boundary |
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10 | !! obc_dyn_east : radiation of the east open boundary velocities |
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11 | !! obc_dyn_west : radiation of the west open boundary velocities |
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12 | !! obc_dyn_north : radiation of the north open boundary velocities |
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13 | !! obc_dyn_south : radiation of the south open boundary velocities |
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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 phycst ! physical constants |
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21 | USE obc_oce ! ocean open boundary conditions |
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22 | USE lbclnk ! ??? |
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23 | USE lib_mpp ! ??? |
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24 | USE in_out_manager ! I/O manager |
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25 | USE dynspg_oce |
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26 | |
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27 | IMPLICIT NONE |
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28 | PRIVATE |
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29 | |
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30 | !! * Accessibility |
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31 | PUBLIC obc_dyn ! routine called in dynspg_flt (free surface case) |
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32 | |
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33 | !! * Module variables |
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34 | INTEGER :: ji, jj, jk ! dummy loop indices |
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35 | |
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36 | INTEGER :: & ! ... boundary space indices |
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37 | nib = 1, & ! nib = boundary point |
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38 | nibm = 2, & ! nibm = 1st interior point |
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39 | nibm2 = 3, & ! nibm2 = 2nd interior point |
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40 | ! ... boundary time indices |
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41 | nit = 1, & ! nit = now |
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42 | nitm = 2, & ! nitm = before |
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43 | nitm2 = 3 ! nitm2 = before-before |
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44 | |
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45 | REAL(wp) :: rtaue , rtauw , rtaun , rtaus , & |
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46 | rtauein, rtauwin, rtaunin, rtausin |
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47 | |
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48 | !!--------------------------------------------------------------------------------- |
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49 | |
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50 | CONTAINS |
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51 | |
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52 | SUBROUTINE obc_dyn ( kt ) |
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53 | !!------------------------------------------------------------------------------ |
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54 | !! SUBROUTINE obc_dyn |
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55 | !! ******************** |
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56 | !! ** Purpose : |
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57 | !! Compute dynamics (u,v) at the open boundaries. |
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58 | !! if defined key_dynspg_flt: |
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59 | !! this routine is called by dynspg_flt and updates |
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60 | !! ua, va which are the actual velocities (not trends) |
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61 | !! |
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62 | !! The logical variable lp_obc_east, and/or lp_obc_west, and/or lp_obc_north, |
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63 | !! and/or lp_obc_south allow the user to determine which boundary is an |
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64 | !! open one (must be done in the param_obc.h90 file). |
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65 | !! |
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66 | !! ** Reference : |
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67 | !! Marchesiello P., 1995, these de l'universite J. Fourier, Grenoble, France. |
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68 | !! |
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69 | !! History : |
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70 | !! ! 95-03 (J.-M. Molines) Original, SPEM |
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71 | !! ! 97-07 (G. Madec, J.-M. Molines) addition |
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72 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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73 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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74 | !!---------------------------------------------------------------------- |
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75 | !! * Arguments |
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76 | INTEGER, INTENT( in ) :: kt |
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77 | |
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78 | !!---------------------------------------------------------------------- |
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79 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
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80 | !! $Id: obcdyn.F90 1528 2009-07-23 14:38:47Z rblod $ |
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81 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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82 | !!---------------------------------------------------------------------- |
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83 | |
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84 | ! 0. Local constant initialization |
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85 | ! -------------------------------- |
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86 | |
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87 | IF( kt == nit000 .OR. ln_rstart) THEN |
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88 | ! ... Boundary restoring coefficient |
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89 | rtaue = 2. * rdt / rdpeob |
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90 | rtauw = 2. * rdt / rdpwob |
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91 | rtaun = 2. * rdt / rdpnob |
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92 | rtaus = 2. * rdt / rdpsob |
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93 | ! ... Boundary restoring coefficient for inflow ( all boundaries) |
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94 | rtauein = 2. * rdt / rdpein |
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95 | rtauwin = 2. * rdt / rdpwin |
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96 | rtaunin = 2. * rdt / rdpnin |
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97 | rtausin = 2. * rdt / rdpsin |
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98 | END IF |
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99 | |
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100 | IF( lp_obc_east ) CALL obc_dyn_east ( kt ) |
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101 | IF( lp_obc_west ) CALL obc_dyn_west ( kt ) |
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102 | IF( lp_obc_north ) CALL obc_dyn_north( kt ) |
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103 | IF( lp_obc_south ) CALL obc_dyn_south( kt ) |
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104 | |
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105 | IF( lk_mpp ) THEN |
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106 | IF( kt >= nit000+3 .AND. ln_rstart ) THEN |
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107 | CALL lbc_lnk( ub, 'U', -1. ) |
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108 | CALL lbc_lnk( vb, 'V', -1. ) |
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109 | END IF |
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110 | CALL lbc_lnk( ua, 'U', -1. ) |
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111 | CALL lbc_lnk( va, 'V', -1. ) |
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112 | ENDIF |
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113 | |
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114 | END SUBROUTINE obc_dyn |
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115 | |
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116 | |
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117 | SUBROUTINE obc_dyn_east ( kt ) |
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118 | !!------------------------------------------------------------------------------ |
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119 | !! *** SUBROUTINE obc_dyn_east *** |
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120 | !! |
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121 | !! ** Purpose : |
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122 | !! Apply the radiation algorithm on east OBC velocities ua, va using the |
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123 | !! phase velocities calculated in obc_rad_east subroutine in obcrad.F90 module |
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124 | !! If the logical lfbceast is .TRUE., there is no radiation but only fixed OBC |
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125 | !! |
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126 | !! History : |
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127 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
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128 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
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129 | !! ! 97-12 (M. Imbard) Mpp adaptation |
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130 | !! ! 00-06 (J.-M. Molines) |
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131 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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132 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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133 | !!------------------------------------------------------------------------------ |
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134 | !! * Arguments |
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135 | INTEGER, INTENT( in ) :: kt |
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136 | |
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137 | !! * Local declaration |
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138 | REAL(wp) :: z05cx, ztau, zin |
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139 | !!------------------------------------------------------------------------------ |
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140 | |
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141 | ! 1. First three time steps and more if lfbceast is .TRUE. |
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142 | ! In that case open boundary conditions are FIXED. |
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143 | ! -------------------------------------------------------- |
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144 | |
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145 | IF( ( kt < nit000+3 .AND. .NOT.ln_rstart ) .OR. lfbceast .OR. lk_dynspg_exp ) THEN |
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146 | |
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147 | ! 1.1 U zonal velocity |
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148 | ! -------------------- |
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149 | DO ji = nie0, nie1 |
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150 | DO jk = 1, jpkm1 |
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151 | DO jj = 1, jpj |
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152 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-uemsk(jj,jk)) + & |
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153 | uemsk(jj,jk)*ufoe(jj,jk) |
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154 | END DO |
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155 | END DO |
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156 | END DO |
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157 | |
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158 | ! 1.2 V meridional velocity |
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159 | ! ------------------------- |
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160 | DO ji = nie0+1, nie1+1 |
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161 | DO jk = 1, jpkm1 |
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162 | DO jj = 1, jpj |
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163 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vemsk(jj,jk)) + & |
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164 | vfoe(jj,jk)*vemsk(jj,jk) |
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165 | END DO |
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166 | END DO |
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167 | END DO |
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168 | |
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169 | ELSE |
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170 | |
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171 | ! 2. Beyond the fourth time step if lfbceast is .FALSE. |
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172 | ! ----------------------------------------------------- |
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173 | |
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174 | ! 2.1. u-component of the velocity |
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175 | ! --------------------------------- |
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176 | ! |
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177 | ! nibm2 nibm nib |
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178 | ! | nibm | nib |/// |
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179 | ! | | | | |/// |
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180 | ! jj-line --f----v----f----v----f--- |
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181 | ! | | | | |/// |
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182 | ! | | |/// |
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183 | ! jj-line u T u T u/// |
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184 | ! | | |/// |
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185 | ! | | | | |/// |
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186 | ! jpieob-2 jpieob-1 jpieob |
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187 | ! | | |
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188 | ! jpieob-1 jpieob |
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189 | ! |
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190 | ! ... If free surface formulation: |
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191 | ! ... radiative conditions on the total part + relaxation toward climatology |
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192 | ! ... (jpjedp1, jpjefm1),jpieob |
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193 | DO ji = nie0, nie1 |
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194 | DO jk = 1, jpkm1 |
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195 | DO jj = 1, jpj |
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196 | z05cx = u_cxebnd(jj,jk) |
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197 | z05cx = z05cx / e1t(ji,jj) |
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198 | z05cx = min( z05cx, 1. ) |
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199 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
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200 | ! > 0, outflow zin=1, ztau=rtaue |
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201 | zin = sign( 1., z05cx ) |
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202 | zin = 0.5*( zin + abs(zin) ) |
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203 | ! ... for inflow rtauein is used for relaxation coefficient else rtaue |
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204 | ztau = (1.-zin ) * rtauein + zin * rtaue |
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205 | z05cx = z05cx * zin |
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206 | ! ... update ua with radiative or climatological velocity |
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207 | ua(ji,jj,jk) = ua(ji,jj,jk) * ( 1. - uemsk(jj,jk) ) + & |
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208 | uemsk(jj,jk) * ( ( 1. - z05cx - ztau ) & |
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209 | * uebnd(jj,jk,nib ,nitm) + 2.*z05cx & |
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210 | * uebnd(jj,jk,nibm,nit ) + ztau * ufoe (jj,jk) ) & |
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211 | / (1. + z05cx) |
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212 | END DO |
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213 | END DO |
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214 | END DO |
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215 | |
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216 | ! 2.2 v-component of the velocity |
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217 | ! ------------------------------- |
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218 | ! |
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219 | ! nibm2 nibm nib |
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220 | ! | nibm | nib///|/// |
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221 | ! | | | |////|/// |
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222 | ! jj-line --v----f----v----f----v--- |
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223 | ! | | | |////|/// |
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224 | ! | | | |////|/// |
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225 | ! | jpieob-1 | jpieob /|/// |
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226 | ! | | | |
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227 | ! jpieob-1 jpieob jpieob+1 |
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228 | ! |
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229 | ! ... radiative condition |
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230 | ! ... (jpjedp1, jpjefm1), jpieob+1 |
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231 | DO ji = nie0+1, nie1+1 |
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232 | DO jk = 1, jpkm1 |
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233 | DO jj = 1, jpj |
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234 | z05cx = v_cxebnd(jj,jk) |
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235 | z05cx = z05cx / e1f(ji-1,jj) |
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236 | z05cx = min( z05cx, 1. ) |
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237 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
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238 | ! > 0, outflow zin=1, ztau=rtaue |
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239 | zin = sign( 1., z05cx ) |
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240 | zin = 0.5*( zin + abs(zin) ) |
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241 | ! ... for inflow rtauein is used for relaxation coefficient else rtaue |
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242 | ztau = (1.-zin ) * rtauein + zin * rtaue |
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243 | z05cx = z05cx * zin |
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244 | ! ... update va with radiative or climatological velocity |
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245 | va(ji,jj,jk) = va(ji,jj,jk) * (1. - vemsk(jj,jk) ) + & |
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246 | vemsk(jj,jk) * ( ( 1. - z05cx - ztau ) & |
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247 | * vebnd(jj,jk,nib ,nitm) + 2.*z05cx & |
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248 | * vebnd(jj,jk,nibm,nit ) + ztau * vfoe(jj,jk) ) & |
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249 | / (1. + z05cx) |
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250 | END DO |
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251 | END DO |
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252 | END DO |
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253 | |
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254 | END IF |
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255 | |
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256 | END SUBROUTINE obc_dyn_east |
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257 | |
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258 | |
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259 | SUBROUTINE obc_dyn_west ( kt ) |
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260 | !!------------------------------------------------------------------------------ |
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261 | !! *** SUBROUTINE obc_dyn_west *** |
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262 | !! |
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263 | !! ** Purpose : |
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264 | !! Apply the radiation algorithm on west OBC velocities ua, va using the |
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265 | !! phase velocities calculated in obc_rad_west subroutine in obcrad.F90 module |
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266 | !! If the logical lfbcwest is .TRUE., there is no radiation but only fixed OBC |
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267 | !! |
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268 | !! History : |
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269 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
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270 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
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271 | !! ! 97-12 (M. Imbard) Mpp adaptation |
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272 | !! ! 00-06 (J.-M. Molines) |
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273 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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274 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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275 | !!------------------------------------------------------------------------------ |
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276 | !! * Arguments |
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277 | INTEGER, INTENT( in ) :: kt |
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278 | |
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279 | !! * Local declaration |
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280 | REAL(wp) :: z05cx, ztau, zin |
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281 | !!------------------------------------------------------------------------------ |
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282 | |
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283 | ! 1. First three time steps and more if lfbcwest is .TRUE. |
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284 | ! In that case open boundary conditions are FIXED. |
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285 | ! -------------------------------------------------------- |
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286 | |
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287 | IF( ( kt < nit000+3 .AND. .NOT.ln_rstart ) .OR. lfbcwest .OR. lk_dynspg_exp ) THEN |
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288 | |
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289 | ! 1.1 U zonal velocity |
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290 | ! --------------------- |
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291 | DO ji = niw0, niw1 |
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292 | DO jk = 1, jpkm1 |
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293 | DO jj = 1, jpj |
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294 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-uwmsk(jj,jk)) + & |
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295 | uwmsk(jj,jk)*ufow(jj,jk) |
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296 | END DO |
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297 | END DO |
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298 | END DO |
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299 | |
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300 | ! 1.2 V meridional velocity |
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301 | ! ------------------------- |
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302 | DO ji = niw0, niw1 |
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303 | DO jk = 1, jpkm1 |
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304 | DO jj = 1, jpj |
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305 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vwmsk(jj,jk)) + & |
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306 | vfow(jj,jk)*vwmsk(jj,jk) |
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307 | END DO |
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308 | END DO |
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309 | END DO |
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310 | |
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311 | ELSE |
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312 | |
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313 | ! 2. Beyond the fourth time step if lfbcwest is .FALSE. |
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314 | ! ----------------------------------------------------- |
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315 | |
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316 | ! 2.1. u-component of the velocity |
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317 | ! --------------------------------- |
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318 | ! |
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319 | ! nib nibm nibm2 |
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320 | ! ///| nib | nibm | |
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321 | ! ///| | | | | |
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322 | ! ---f----v----f----v----f-- jj-line |
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323 | ! ///| | | | | |
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324 | ! ///| | | |
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325 | ! ///u T u T u jj-line |
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326 | ! ///| | | |
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327 | ! ///| | | | | |
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328 | ! jpiwob jpiwob+1 jpiwob+2 |
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329 | ! | | |
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330 | ! jpiwob+1 jpiwob+2 |
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331 | ! |
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332 | ! ... If free surface formulation: |
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333 | ! ... radiative conditions on the total part + relaxation toward climatology |
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334 | ! ... (jpjwdp1, jpjwfm1), jpiwob |
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335 | DO ji = niw0, niw1 |
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336 | DO jk = 1, jpkm1 |
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337 | DO jj = 1, jpj |
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338 | z05cx = u_cxwbnd(jj,jk) |
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339 | z05cx = z05cx / e1t(ji+1,jj) |
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340 | z05cx = max( z05cx, -1. ) |
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341 | ! ... z05c > 0, inflow zin=0, ztau=1 |
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342 | ! =< 0, outflow zin=1, ztau=rtauw |
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343 | zin = sign( 1., -1. * z05cx ) |
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344 | zin = 0.5*( zin + abs(zin) ) |
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345 | ztau = (1.-zin )* rtauwin + zin * rtauw |
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346 | z05cx = z05cx * zin |
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347 | ! ... update un with radiative or climatological velocity |
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348 | ua(ji,jj,jk) = ua(ji,jj,jk) * ( 1. - uwmsk(jj,jk) ) + & |
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349 | uwmsk(jj,jk) * ( ( 1. + z05cx - ztau ) & |
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350 | * uwbnd(jj,jk,nib ,nitm) - 2.*z05cx & |
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351 | * uwbnd(jj,jk,nibm,nit ) + ztau * ufow (jj,jk) ) & |
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352 | / (1. - z05cx) |
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353 | END DO |
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354 | END DO |
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355 | END DO |
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356 | |
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357 | ! 2.2 v-component of the velocity |
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358 | ! ------------------------------- |
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359 | ! |
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360 | ! nib nibm nibm2 |
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361 | ! ///|///nib | nibm | nibm2 |
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362 | ! ///|////| | | | | | |
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363 | ! ---v----f----v----f----v----f----v-- jj-line |
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364 | ! ///|////| | | | | | |
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365 | ! ///|////| | | | | | |
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366 | ! jpiwob jpiwob+1 jpiwob+2 |
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367 | ! | | | |
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368 | ! jpiwob jpiwob+1 jpiwob+2 |
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369 | ! |
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370 | ! ... radiative condition plus Raymond-Kuo |
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371 | ! ... (jpjwdp1, jpjwfm1),jpiwob |
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372 | DO ji = niw0, niw1 |
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373 | DO jk = 1, jpkm1 |
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374 | DO jj = 1, jpj |
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375 | z05cx = v_cxwbnd(jj,jk) |
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376 | z05cx = z05cx / e1f(ji,jj) |
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377 | z05cx = max( z05cx, -1. ) |
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378 | ! ... z05cx > 0, inflow zin=0, ztau=1 |
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379 | ! =< 0, outflow zin=1, ztau=rtauw |
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380 | zin = sign( 1., -1. * z05cx ) |
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381 | zin = 0.5*( zin + abs(zin) ) |
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382 | ztau = (1.-zin )*rtauwin + zin * rtauw |
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383 | z05cx = z05cx * zin |
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384 | ! ... update va with radiative or climatological velocity |
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385 | va(ji,jj,jk) = va(ji,jj,jk) * (1. - vwmsk(jj,jk) ) + & |
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386 | vwmsk(jj,jk) * ( ( 1. + z05cx - ztau ) & |
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387 | * vwbnd(jj,jk,nib ,nitm) - 2.*z05cx & |
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388 | * vwbnd(jj,jk,nibm,nit ) + ztau * vfow (jj,jk) ) & |
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389 | / (1. - z05cx) |
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390 | END DO |
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391 | END DO |
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392 | END DO |
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393 | |
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394 | END IF |
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395 | |
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396 | END SUBROUTINE obc_dyn_west |
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397 | |
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398 | SUBROUTINE obc_dyn_north ( kt ) |
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399 | !!------------------------------------------------------------------------------ |
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400 | !! SUBROUTINE obc_dyn_north |
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401 | !! ************************* |
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402 | !! ** Purpose : |
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403 | !! Apply the radiation algorithm on north OBC velocities ua, va using the |
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404 | !! phase velocities calculated in obc_rad_north subroutine in obcrad.F90 module |
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405 | !! If the logical lfbcnorth is .TRUE., there is no radiation but only fixed OBC |
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406 | !! |
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407 | !! History : |
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408 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
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409 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
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410 | !! ! 97-12 (M. Imbard) Mpp adaptation |
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411 | !! ! 00-06 (J.-M. Molines) |
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412 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
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413 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
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414 | !!------------------------------------------------------------------------------ |
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415 | !! * Arguments |
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416 | INTEGER, INTENT( in ) :: kt |
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417 | |
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418 | !! * Local declaration |
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419 | REAL(wp) :: z05cx, ztau, zin |
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420 | !!------------------------------------------------------------------------------ |
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421 | |
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422 | ! 1. First three time steps and more if lfbcnorth is .TRUE. |
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423 | ! In that case open boundary conditions are FIXED. |
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424 | ! --------------------------------------------------------- |
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425 | |
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426 | IF( ( kt < nit000+3 .AND. .NOT.ln_rstart ) .OR. lfbcnorth .OR. lk_dynspg_exp ) THEN |
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427 | |
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428 | ! 1.1 U zonal velocity |
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429 | ! -------------------- |
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430 | DO jj = njn0+1, njn1+1 |
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431 | DO jk = 1, jpkm1 |
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432 | DO ji = 1, jpi |
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433 | ua(ji,jj,jk)= ua(ji,jj,jk) * (1.-unmsk(ji,jk)) + & |
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434 | ufon(ji,jk)*unmsk(ji,jk) |
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435 | END DO |
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436 | END DO |
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437 | END DO |
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438 | |
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439 | ! 1.2 V meridional velocity |
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440 | ! ------------------------- |
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441 | DO jj = njn0, njn1 |
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442 | DO jk = 1, jpkm1 |
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443 | DO ji = 1, jpi |
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444 | va(ji,jj,jk)= va(ji,jj,jk) * (1.-vnmsk(ji,jk)) + & |
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445 | vfon(ji,jk)*vnmsk(ji,jk) |
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446 | END DO |
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447 | END DO |
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448 | END DO |
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449 | |
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450 | ELSE |
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451 | |
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452 | ! 2. Beyond the fourth time step if lfbcnorth is .FALSE. |
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453 | ! ------------------------------------------------------ |
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454 | |
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455 | ! 2.1. u-component of the velocity |
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456 | ! -------------------------------- |
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457 | ! |
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458 | ! ji-row |
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459 | ! | |
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460 | ! nib ///u////// jpjnob + 1 |
---|
461 | ! /////|////// |
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462 | ! nib -----f----- jpjnob |
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463 | ! | |
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464 | ! nibm-- u ---- jpjnob |
---|
465 | ! | |
---|
466 | ! nibm -----f----- jpjnob-1 |
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467 | ! | |
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468 | ! nibm2-- u ---- jpjnob-1 |
---|
469 | ! | |
---|
470 | ! nibm2 -----f----- jpjnob-2 |
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471 | ! | |
---|
472 | ! |
---|
473 | ! ... radiative condition |
---|
474 | ! ... jpjnob+1,(jpindp1, jpinfm1) |
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475 | DO jj = njn0+1, njn1+1 |
---|
476 | DO jk = 1, jpkm1 |
---|
477 | DO ji = 1, jpi |
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478 | z05cx= u_cynbnd(ji,jk) |
---|
479 | z05cx = z05cx / e2f(ji, jj-1) |
---|
480 | z05cx = min( z05cx, 1. ) |
---|
481 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
---|
482 | ! > 0, outflow zin=1, ztau=rtaun |
---|
483 | zin = sign( 1., z05cx ) |
---|
484 | zin = 0.5*( zin + abs(zin) ) |
---|
485 | ! ... for inflow rtaunin is used for relaxation coefficient else rtaun |
---|
486 | ztau = (1.-zin ) * rtaunin + zin * rtaun |
---|
487 | ! ... for u, when inflow, ufon is prescribed |
---|
488 | z05cx = z05cx * zin |
---|
489 | ! ... update un with radiative or climatological velocity |
---|
490 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-unmsk(ji,jk)) + & |
---|
491 | unmsk(ji,jk) * ( ( 1. - z05cx - ztau ) & |
---|
492 | * unbnd(ji,jk,nib ,nitm) + 2.*z05cx & |
---|
493 | * unbnd(ji,jk,nibm,nit ) + ztau * ufon (ji,jk) ) & |
---|
494 | / (1. + z05cx) |
---|
495 | END DO |
---|
496 | END DO |
---|
497 | END DO |
---|
498 | |
---|
499 | ! 2.2 v-component of the velocity |
---|
500 | ! ------------------------------- |
---|
501 | ! |
---|
502 | ! ji-row ji-row |
---|
503 | ! | | |
---|
504 | ! /////|///////////////// |
---|
505 | ! nib -----f----v----f---- jpjnob |
---|
506 | ! | | |
---|
507 | ! nib - u -- T -- u ---- jpjnob |
---|
508 | ! | | |
---|
509 | ! nibm -----f----v----f---- jpjnob-1 |
---|
510 | ! | | |
---|
511 | ! nibm -- u -- T -- u --- jpjnob-1 |
---|
512 | ! | | |
---|
513 | ! nibm2 -----f----v----f---- jpjnob-2 |
---|
514 | ! | | |
---|
515 | ! |
---|
516 | ! ... Free surface formulation: |
---|
517 | ! ... radiative conditions on the total part + relaxation toward climatology |
---|
518 | ! ... jpjnob,(jpindp1, jpinfm1) |
---|
519 | DO jj = njn0, njn1 |
---|
520 | DO jk = 1, jpkm1 |
---|
521 | DO ji = 1, jpi |
---|
522 | ! ... 2* gradj(v) (T-point i=nibm, time mean) |
---|
523 | z05cx = v_cynbnd(ji,jk) |
---|
524 | z05cx = z05cx / e2t(ji,jj) |
---|
525 | z05cx = min( z05cx, 1. ) |
---|
526 | ! ... z05cx=< 0, inflow zin=0, ztau=1 |
---|
527 | ! > 0, outflow zin=1, ztau=rtaun |
---|
528 | zin = sign( 1., z05cx ) |
---|
529 | zin = 0.5*( zin + abs(zin) ) |
---|
530 | ! ... for inflow rtaunin is used for relaxation coefficient else rtaun |
---|
531 | ztau = (1.-zin ) * rtaunin + zin * rtaun |
---|
532 | z05cx = z05cx * zin |
---|
533 | ! ... update va with radiative or climatological velocity |
---|
534 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vnmsk(ji,jk)) + & |
---|
535 | vnmsk(ji,jk) * ( ( 1. - z05cx - ztau ) & |
---|
536 | * vnbnd(ji,jk,nib ,nitm) + 2.*z05cx & |
---|
537 | * vnbnd(ji,jk,nibm,nit ) + ztau * vfon (ji,jk) ) & |
---|
538 | / (1. + z05cx) |
---|
539 | END DO |
---|
540 | END DO |
---|
541 | END DO |
---|
542 | END IF |
---|
543 | |
---|
544 | END SUBROUTINE obc_dyn_north |
---|
545 | |
---|
546 | SUBROUTINE obc_dyn_south ( kt ) |
---|
547 | !!------------------------------------------------------------------------------ |
---|
548 | !! SUBROUTINE obc_dyn_south |
---|
549 | !! ************************* |
---|
550 | !! ** Purpose : |
---|
551 | !! Apply the radiation algorithm on south OBC velocities ua, va using the |
---|
552 | !! phase velocities calculated in obc_rad_south subroutine in obcrad.F90 module |
---|
553 | !! If the logical lfbcsouth is .TRUE., there is no radiation but only fixed OBC |
---|
554 | !! |
---|
555 | !! History : |
---|
556 | !! ! 95-03 (J.-M. Molines) Original from SPEM |
---|
557 | !! ! 97-07 (G. Madec, J.-M. Molines) additions |
---|
558 | !! ! 97-12 (M. Imbard) Mpp adaptation |
---|
559 | !! ! 00-06 (J.-M. Molines) |
---|
560 | !! 8.5 ! 02-10 (C. Talandier, A-M. Treguier) Free surface, F90 |
---|
561 | !! 9.0 ! 05-11 (V. Garnier) Surface pressure gradient organization |
---|
562 | !!------------------------------------------------------------------------------ |
---|
563 | !! * Arguments |
---|
564 | INTEGER, INTENT( in ) :: kt |
---|
565 | |
---|
566 | !! * Local declaration |
---|
567 | REAL(wp) :: z05cx, ztau, zin |
---|
568 | |
---|
569 | !!------------------------------------------------------------------------------ |
---|
570 | !! OPA 8.5, LODYC-IPSL (2002) |
---|
571 | !!------------------------------------------------------------------------------ |
---|
572 | |
---|
573 | ! 1. First three time steps and more if lfbcsouth is .TRUE. |
---|
574 | ! In that case open boundary conditions are FIXED. |
---|
575 | ! --------------------------------------------------------- |
---|
576 | |
---|
577 | IF( ( kt < nit000+3 .AND. .NOT.ln_rstart ) .OR. lfbcsouth .OR. lk_dynspg_exp ) THEN |
---|
578 | |
---|
579 | ! 1.1 U zonal velocity |
---|
580 | ! -------------------- |
---|
581 | DO jj = njs0, njs1 |
---|
582 | DO jk = 1, jpkm1 |
---|
583 | DO ji = 1, jpi |
---|
584 | ua(ji,jj,jk)= ua(ji,jj,jk) * (1.-usmsk(ji,jk)) + & |
---|
585 | usmsk(ji,jk) * ufos(ji,jk) |
---|
586 | END DO |
---|
587 | END DO |
---|
588 | END DO |
---|
589 | |
---|
590 | ! 1.2 V meridional velocity |
---|
591 | ! ------------------------- |
---|
592 | DO jj = njs0, njs1 |
---|
593 | DO jk = 1, jpkm1 |
---|
594 | DO ji = 1, jpi |
---|
595 | va(ji,jj,jk)= va(ji,jj,jk) * (1.-vsmsk(ji,jk)) + & |
---|
596 | vsmsk(ji,jk) * vfos(ji,jk) |
---|
597 | END DO |
---|
598 | END DO |
---|
599 | END DO |
---|
600 | |
---|
601 | ELSE |
---|
602 | |
---|
603 | ! 2. Beyond the fourth time step if lfbcsouth is .FALSE. |
---|
604 | ! ------------------------------------------------------ |
---|
605 | |
---|
606 | ! 2.1. u-component of the velocity |
---|
607 | ! -------------------------------- |
---|
608 | ! |
---|
609 | ! ji-row |
---|
610 | ! | |
---|
611 | ! nibm2 -----f----- jpjsob +2 |
---|
612 | ! | |
---|
613 | ! nibm2 -- u ---- jpjsob +2 |
---|
614 | ! | |
---|
615 | ! nibm -----f----- jpjsob +1 |
---|
616 | ! | |
---|
617 | ! nibm -- u ---- jpjsob +1 |
---|
618 | ! | |
---|
619 | ! nib -----f----- jpjsob |
---|
620 | ! /////|////// |
---|
621 | ! nib ////u///// jpjsob |
---|
622 | ! |
---|
623 | ! ... radiative condition plus Raymond-Kuo |
---|
624 | ! ... jpjsob,(jpisdp1, jpisfm1) |
---|
625 | DO jj = njs0, njs1 |
---|
626 | DO jk = 1, jpkm1 |
---|
627 | DO ji = 1, jpi |
---|
628 | z05cx= u_cysbnd(ji,jk) |
---|
629 | z05cx = z05cx / e2f(ji, jj) |
---|
630 | z05cx = max( z05cx, -1. ) |
---|
631 | ! ... z05cx > 0, inflow zin=0, ztau=1 |
---|
632 | ! =< 0, outflow zin=1, ztau=rtaus |
---|
633 | zin = sign( 1., -1. * z05cx ) |
---|
634 | zin = 0.5*( zin + abs(zin) ) |
---|
635 | ztau = (1.-zin ) * rtausin + zin * rtaus |
---|
636 | z05cx = z05cx * zin |
---|
637 | ! ... update ua with radiative or climatological velocity |
---|
638 | ua(ji,jj,jk) = ua(ji,jj,jk) * (1.-usmsk(ji,jk)) + & |
---|
639 | usmsk(ji,jk) * ( ( 1. + z05cx - ztau ) & |
---|
640 | * usbnd(ji,jk,nib ,nitm) - 2.*z05cx & |
---|
641 | * usbnd(ji,jk,nibm,nit ) + ztau * ufos (ji,jk) ) & |
---|
642 | / (1. - z05cx) |
---|
643 | END DO |
---|
644 | END DO |
---|
645 | END DO |
---|
646 | |
---|
647 | ! 2.2 v-component of the velocity |
---|
648 | ! ------------------------------- |
---|
649 | ! |
---|
650 | ! ji-row ji-row |
---|
651 | ! | | |
---|
652 | ! nibm2 -----f----v----f---- jpjsob+2 |
---|
653 | ! | | |
---|
654 | ! nibm - u -- T -- u ---- jpjsob+2 |
---|
655 | ! | | |
---|
656 | ! nibm -----f----v----f---- jpjsob+1 |
---|
657 | ! | | |
---|
658 | ! nib -- u -- T -- u --- jpjsob+1 |
---|
659 | ! | | |
---|
660 | ! nib -----f----v----f---- jpjsob |
---|
661 | ! ///////////////////// |
---|
662 | ! |
---|
663 | ! ... Free surface formulation: |
---|
664 | ! ... radiative conditions on the total part + relaxation toward climatology |
---|
665 | ! ... jpjsob,(jpisdp1,jpisfm1) |
---|
666 | DO jj = njs0, njs1 |
---|
667 | DO jk = 1, jpkm1 |
---|
668 | DO ji = 1, jpi |
---|
669 | z05cx = v_cysbnd(ji,jk) |
---|
670 | z05cx = z05cx / e2t(ji,jj+1) |
---|
671 | z05cx = max( z05cx, -1. ) |
---|
672 | ! ... z05c > 0, inflow zin=0, ztau=1 |
---|
673 | ! =< 0, outflow zin=1, ztau=rtaus |
---|
674 | zin = sign( 1., -1. * z05cx ) |
---|
675 | zin = 0.5*( zin + abs(zin) ) |
---|
676 | ztau = (1.-zin )*rtausin + zin * rtaus |
---|
677 | z05cx = z05cx * zin |
---|
678 | ! ... update va with radiative or climatological velocity |
---|
679 | va(ji,jj,jk) = va(ji,jj,jk) * (1.-vsmsk(ji,jk)) + & |
---|
680 | vsmsk(ji,jk) * ( ( 1. + z05cx - ztau ) & |
---|
681 | * vsbnd(ji,jk,nib ,nitm) - 2.*z05cx & |
---|
682 | * vsbnd(ji,jk,nibm,nit ) + ztau * vfos (ji,jk) ) & |
---|
683 | / (1. - z05cx) |
---|
684 | END DO |
---|
685 | END DO |
---|
686 | END DO |
---|
687 | END IF |
---|
688 | |
---|
689 | END SUBROUTINE obc_dyn_south |
---|
690 | #else |
---|
691 | !!================================================================================= |
---|
692 | !! *** MODULE obcdyn *** |
---|
693 | !! Ocean dynamics: Radiation of velocities on each open boundary |
---|
694 | !!================================================================================= |
---|
695 | CONTAINS |
---|
696 | |
---|
697 | SUBROUTINE obc_dyn |
---|
698 | ! No open boundaries ==> empty routine |
---|
699 | END SUBROUTINE obc_dyn |
---|
700 | #endif |
---|
701 | |
---|
702 | END MODULE obcdyn |
---|