1 | MODULE lbclnk |
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2 | !!====================================================================== |
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3 | !! *** MODULE zdftke *** |
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4 | !! Ocean : lateral boundary conditions |
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5 | !!===================================================================== |
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6 | #if defined key_mpp_mpi || defined key_mpp_shmem |
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7 | !!---------------------------------------------------------------------- |
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8 | !! 'key_mpp_mpi' OR MPI massively parallel processing library |
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9 | !! 'key_mpp_shmem' SHMEM massively parallel processing library |
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10 | !!---------------------------------------------------------------------- |
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11 | !!---------------------------------------------------------------------- |
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12 | !! lbc_lnk : generic interface for mpp_lnk_3d and mpp_lnk_2d |
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13 | !! routines defined in lib_mpp |
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14 | !!---------------------------------------------------------------------- |
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15 | !! * Modules used |
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16 | USE lib_mpp ! distributed memory computing library |
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17 | |
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18 | INTERFACE lbc_lnk |
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19 | MODULE PROCEDURE mpp_lnk_3d, mpp_lnk_2d |
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20 | END INTERFACE |
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21 | |
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22 | PUBLIC lbc_lnk ! ocean lateral boundary conditions |
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23 | !!---------------------------------------------------------------------- |
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24 | |
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25 | #else |
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26 | !!---------------------------------------------------------------------- |
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27 | !! Default option shared memory computing |
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28 | !!---------------------------------------------------------------------- |
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29 | !! lbc_lnk : generic interface for lbc_lnk_3d and lbc_lnk_2d |
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30 | !! lbc_lnk_3d : set the lateral boundary condition on a 3D variable |
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31 | !! on OPA ocean mesh |
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32 | !! lbc_lnk_2d : set the lateral boundary condition on a 2D variable |
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33 | !! on OPA ocean mesh |
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34 | !!---------------------------------------------------------------------- |
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35 | !! * Modules used |
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36 | USE oce ! ocean dynamics and tracers |
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37 | USE dom_oce ! ocean space and time domain |
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38 | USE in_out_manager ! I/O manager |
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39 | |
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40 | IMPLICIT NONE |
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41 | PRIVATE |
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42 | |
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43 | INTERFACE lbc_lnk |
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44 | MODULE PROCEDURE lbc_lnk_3d, lbc_lnk_2d |
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45 | END INTERFACE |
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46 | |
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47 | PUBLIC lbc_lnk ! ocean/ice lateral boundary conditions |
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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 lbc_lnk_3d( pt3d, cd_type, psgn ) |
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53 | !!--------------------------------------------------------------------- |
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54 | !! *** ROUTINE lbc_lnk_3d *** |
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55 | !! |
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56 | !! ** Purpose : set lateral boundary conditions (non mpp case) |
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57 | !! |
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58 | !! ** Method : |
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59 | !! |
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60 | !! History : |
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61 | !! ! 97-06 (G. Madec) Original code |
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62 | !! 8.5 ! 02-09 (G. Madec) F90: Free form and module |
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63 | !!---------------------------------------------------------------------- |
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64 | !! * Arguments |
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65 | CHARACTER(len=1), INTENT( in ) :: & |
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66 | cd_type ! nature of pt3d grid-points |
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67 | ! ! = T , U , V , F or W gridpoints |
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68 | REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT( inout ) :: & |
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69 | pt3d ! 3D array on which the boundary condition is applied |
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70 | REAL(wp), INTENT( in ) :: & |
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71 | psgn ! control of the sign change |
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72 | ! ! =-1 , the sign is changed if north fold boundary |
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73 | ! ! = 1 , no sign change |
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74 | ! ! = 0 , no sign change and > 0 required (use the inner |
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75 | ! ! row/column if closed boundary) |
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76 | |
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77 | !! * Local declarations |
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78 | INTEGER :: ji, jk |
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79 | INTEGER :: ijt, iju |
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80 | !!---------------------------------------------------------------------- |
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81 | !! OPA 8.5, LODYC-IPSL (2002) |
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82 | !!---------------------------------------------------------------------- |
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83 | |
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84 | ! ! =============== |
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85 | DO jk = 1, jpk ! Horizontal slab |
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86 | ! ! =============== |
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87 | |
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88 | ! ! East-West boundaries |
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89 | ! ! ==================== |
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90 | SELECT CASE ( nperio ) |
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91 | |
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92 | CASE ( 1 , 4 , 6 ) ! * cyclic east-west |
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93 | pt3d( 1 ,:,jk) = pt3d(jpim1,:,jk) ! all points |
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94 | pt3d(jpi,:,jk) = pt3d( 2 ,:,jk) |
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95 | |
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96 | CASE DEFAULT ! * closed |
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97 | SELECT CASE ( cd_type ) |
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98 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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99 | pt3d( 1 ,:,jk) = 0.e0 |
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100 | pt3d(jpi,:,jk) = 0.e0 |
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101 | CASE ( 'F' ) ! F-point |
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102 | pt3d(jpi,:,jk) = 0.e0 |
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103 | END SELECT |
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104 | |
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105 | END SELECT |
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106 | |
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107 | ! ! North-South boundaries |
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108 | ! ! ====================== |
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109 | SELECT CASE ( nperio ) |
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110 | |
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111 | CASE ( 2 ) ! * south symmetric |
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112 | |
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113 | SELECT CASE ( cd_type ) |
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114 | CASE ( 'T' , 'U' , 'W' ) ! T-, U-, W-points |
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115 | pt3d(:, 1 ,jk) = pt3d(:,3,jk) |
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116 | pt3d(:,jpj,jk) = 0.e0 |
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117 | CASE ( 'V' , 'F' ) ! V-, F-points |
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118 | pt3d(:, 1 ,jk) = psgn * pt3d(:,2,jk) |
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119 | pt3d(:,jpj,jk) = 0.e0 |
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120 | END SELECT |
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121 | |
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122 | CASE ( 3 , 4 ) ! * North fold T-point pivot |
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123 | |
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124 | pt3d( 1 ,jpj,jk) = 0.e0 |
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125 | pt3d(jpi,jpj,jk) = 0.e0 |
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126 | |
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127 | SELECT CASE ( cd_type ) |
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128 | CASE ( 'T' , 'W' ) ! T-, W-point |
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129 | DO ji = 2, jpi |
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130 | ijt = jpi-ji+2 |
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131 | pt3d(ji, 1 ,jk) = 0.e0 |
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132 | pt3d(ji,jpj,jk) = psgn * pt3d(ijt,jpj-2,jk) |
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133 | END DO |
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134 | DO ji = jpi/2+1, jpi |
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135 | ijt = jpi-ji+2 |
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136 | pt3d(ji,jpjm1,jk) = psgn * pt3d(ijt,jpjm1,jk) |
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137 | END DO |
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138 | CASE ( 'U' ) ! U-point |
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139 | DO ji = 1, jpi-1 |
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140 | iju = jpi-ji+1 |
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141 | pt3d(ji, 1 ,jk) = 0.e0 |
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142 | pt3d(ji,jpj,jk) = psgn * pt3d(iju,jpj-2,jk) |
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143 | END DO |
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144 | DO ji = jpi/2, jpi-1 |
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145 | iju = jpi-ji+1 |
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146 | pt3d(ji,jpjm1,jk) = psgn * pt3d(iju,jpjm1,jk) |
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147 | END DO |
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148 | CASE ( 'V' ) ! V-point |
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149 | DO ji = 2, jpi |
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150 | ijt = jpi-ji+2 |
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151 | pt3d(ji, 1 ,jk) = 0.e0 |
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152 | pt3d(ji,jpj-1,jk) = psgn * pt3d(ijt,jpj-2,jk) |
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153 | pt3d(ji,jpj ,jk) = psgn * pt3d(ijt,jpj-3,jk) |
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154 | END DO |
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155 | CASE ( 'F' ) ! F-point |
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156 | DO ji = 1, jpi-1 |
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157 | iju = jpi-ji+1 |
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158 | pt3d(ji,jpj-1,jk) = pt3d(iju,jpj-2,jk) |
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159 | pt3d(ji,jpj ,jk) = pt3d(iju,jpj-3,jk) |
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160 | END DO |
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161 | END SELECT |
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162 | |
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163 | CASE ( 5 , 6 ) ! * North fold F-point pivot |
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164 | |
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165 | pt3d( 1 ,jpj,jk) = 0.e0 |
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166 | pt3d(jpi,jpj,jk) = 0.e0 |
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167 | |
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168 | SELECT CASE ( cd_type ) |
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169 | CASE ( 'T' , 'W' ) ! T-, W-point |
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170 | DO ji = 1, jpi |
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171 | ijt = jpi-ji+1 |
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172 | pt3d(ji, 1 ,jk) = 0.e0 |
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173 | pt3d(ji,jpj,jk) = psgn * pt3d(ijt,jpj-1,jk) |
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174 | END DO |
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175 | CASE ( 'U' ) ! U-point |
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176 | DO ji = 1, jpi-1 |
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177 | iju = jpi-ji |
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178 | pt3d(ji, 1 ,jk) = 0.e0 |
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179 | pt3d(ji,jpj,jk) = psgn * pt3d(iju,jpj-1,jk) |
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180 | END DO |
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181 | CASE ( 'V' ) ! V-point |
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182 | DO ji = 1, jpi |
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183 | ijt = jpi-ji+1 |
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184 | pt3d(ji, 1 ,jk) = 0.e0 |
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185 | pt3d(ji,jpj,jk) = psgn * pt3d(ijt,jpj-2,jk) |
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186 | END DO |
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187 | DO ji = jpi/2+1, jpi |
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188 | ijt = jpi-ji+1 |
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189 | pt3d(ji,jpjm1,jk) = psgn * pt3d(ijt,jpjm1,jk) |
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190 | END DO |
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191 | CASE ( 'F' ) ! F-point |
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192 | DO ji = 1, jpi-1 |
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193 | iju = jpi-ji |
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194 | pt3d(ji,jpj ,jk) = pt3d(iju,jpj-2,jk) |
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195 | END DO |
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196 | DO ji = jpi/2+1, jpi-1 |
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197 | iju = jpi-ji |
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198 | pt3d(ji,jpjm1,jk) = pt3d(iju,jpjm1,jk) |
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199 | END DO |
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200 | END SELECT |
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201 | |
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202 | CASE DEFAULT ! * closed |
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203 | |
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204 | SELECT CASE ( cd_type ) |
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205 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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206 | pt3d(:, 1 ,jk) = 0.e0 |
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207 | pt3d(:,jpj,jk) = 0.e0 |
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208 | CASE ( 'F' ) ! F-point |
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209 | pt3d(:,jpj,jk) = 0.e0 |
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210 | END SELECT |
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211 | |
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212 | END SELECT |
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213 | ! ! =============== |
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214 | END DO ! End of slab |
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215 | ! ! =============== |
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216 | END SUBROUTINE lbc_lnk_3d |
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217 | |
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218 | |
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219 | SUBROUTINE lbc_lnk_2d( pt2d, cd_type, psgn ) |
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220 | !!--------------------------------------------------------------------- |
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221 | !! *** ROUTINE lbc_lnk_2d *** |
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222 | !! |
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223 | !! ** Purpose : set lateral boundary conditions (non mpp case) |
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224 | !! |
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225 | !! ** Method : |
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226 | !! |
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227 | !! History : |
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228 | !! ! 97-06 (G. Madec) Original code |
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229 | !! ! 01-05 (E. Durand) correction |
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230 | !! 8.5 ! 02-09 (G. Madec) F90: Free form and module |
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231 | !!---------------------------------------------------------------------- |
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232 | !! * Arguments |
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233 | CHARACTER(len=1), INTENT( in ) :: & |
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234 | cd_type ! nature of pt2d grid-point |
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235 | ! ! = T , U , V , F or W gridpoints |
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236 | ! ! = I sea-ice U-V gridpoint (= F ocean grid point with indice shift) |
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237 | REAL(wp), INTENT( in ) :: & |
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238 | psgn ! control of the sign change |
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239 | ! ! =-1 , the sign is modified following the type of b.c. used |
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240 | ! ! = 1 , no sign change |
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241 | REAL(wp), DIMENSION(jpi,jpj), INTENT( inout ) :: & |
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242 | pt2d ! 2D array on which the boundary condition is applied |
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243 | |
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244 | !! * Local declarations |
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245 | INTEGER :: ji |
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246 | INTEGER :: ijt, iju |
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247 | !!---------------------------------------------------------------------- |
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248 | !! OPA 8.5, LODYC-IPSL (2002) |
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249 | !!---------------------------------------------------------------------- |
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250 | |
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251 | |
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252 | ! ! East-West boundaries |
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253 | ! ! ==================== |
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254 | SELECT CASE ( nperio ) |
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255 | |
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256 | CASE ( 1 , 4 , 6 ) ! * cyclic east-west |
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257 | pt2d( 1 ,:) = pt2d(jpim1,:) |
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258 | pt2d(jpi,:) = pt2d( 2 ,:) |
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259 | |
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260 | CASE DEFAULT ! * closed |
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261 | SELECT CASE ( cd_type ) |
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262 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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263 | pt2d( 1 ,:) = 0.e0 |
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264 | pt2d(jpi,:) = 0.e0 |
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265 | CASE ( 'F' ) ! F-point, ice U-V point |
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266 | pt2d(jpi,:) = 0.e0 |
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267 | CASE ( 'I' ) ! F-point, ice U-V point |
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268 | pt2d( 1 ,:) = 0.e0 |
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269 | pt2d(jpi,:) = 0.e0 |
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270 | END SELECT |
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271 | |
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272 | END SELECT |
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273 | |
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274 | ! ! North-South boundaries |
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275 | ! ! ====================== |
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276 | SELECT CASE ( nperio ) |
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277 | |
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278 | CASE ( 2 ) ! * South symmetric |
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279 | |
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280 | SELECT CASE ( cd_type ) |
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281 | CASE ( 'T' , 'U' , 'W' ) ! T-, U-, W-points |
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282 | pt2d(:, 1 ) = pt2d(:,3) |
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283 | pt2d(:,jpj) = 0.e0 |
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284 | CASE ( 'V' , 'F' , 'I' ) ! V-, F-points, ice U-V point |
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285 | pt2d(:, 1 ) = psgn * pt2d(:,2) |
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286 | pt2d(:,jpj) = 0.e0 |
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287 | END SELECT |
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288 | |
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289 | CASE ( 3 , 4 ) ! * North fold T-point pivot |
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290 | |
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291 | pt2d( 1 , 1 ) = 0.e0 !!!!! bug gm ??? !Edmee |
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292 | pt2d( 1 ,jpj) = 0.e0 |
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293 | pt2d(jpi,jpj) = 0.e0 |
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294 | |
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295 | SELECT CASE ( cd_type ) |
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296 | |
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297 | CASE ( 'T' , 'W' ) ! T-, W-point |
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298 | DO ji = 2, jpi |
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299 | ijt = jpi-ji+2 |
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300 | pt2d(ji, 1 ) = 0.e0 |
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301 | pt2d(ji,jpj) = psgn * pt2d(ijt,jpj-2) |
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302 | END DO |
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303 | DO ji = jpi/2+1, jpi |
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304 | ijt = jpi-ji+2 |
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305 | pt2d(ji,jpjm1) = psgn * pt2d(ijt,jpjm1) |
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306 | END DO |
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307 | |
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308 | CASE ( 'U' ) ! U-point |
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309 | DO ji = 1, jpi-1 |
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310 | iju = jpi-ji+1 |
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311 | pt2d(ji, 1 ) = 0.e0 |
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312 | pt2d(ji,jpj) = psgn * pt2d(iju,jpj-2) |
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313 | END DO |
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314 | DO ji = jpi/2, jpi-1 |
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315 | iju = jpi-ji+1 |
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316 | pt2d(ji,jpjm1) = psgn * pt2d(iju,jpjm1) |
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317 | END DO |
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318 | |
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319 | CASE ( 'V' ) ! V-point |
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320 | DO ji = 2, jpi |
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321 | ijt = jpi-ji+2 |
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322 | pt2d(ji, 1 ) = 0.e0 |
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323 | pt2d(ji,jpj-1) = psgn * pt2d(ijt,jpj-2) |
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324 | pt2d(ji,jpj ) = psgn * pt2d(ijt,jpj-3) |
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325 | END DO |
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326 | |
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327 | CASE ( 'F' ) ! F-point |
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328 | DO ji = 1, jpi-1 |
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329 | iju = jpi - ji + 1 |
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330 | pt2d(ji,jpj-1) = pt2d(iju,jpj-2) |
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331 | pt2d(ji,jpj ) = pt2d(iju,jpj-3) |
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332 | END DO |
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333 | |
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334 | CASE ( 'I' ) ! ice U-V point |
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335 | pt2d(2,jpj) = psgn * pt2d(3,jpj-1) |
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336 | DO ji = 3, jpi |
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337 | iju = jpi - ji + 3 |
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338 | pt2d(ji,jpj) = psgn * pt2d(iju,jpj-1) |
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339 | END DO |
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340 | |
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341 | END SELECT |
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342 | |
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343 | CASE ( 5 , 6 ) ! * North fold F-point pivot |
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344 | |
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345 | pt2d( 1 , 1 ) = 0.e0 !!bug ??? |
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346 | pt2d( 1 ,jpj) = 0.e0 |
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347 | pt2d(jpi,jpj) = 0.e0 |
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348 | |
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349 | SELECT CASE ( cd_type ) |
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350 | |
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351 | CASE ( 'T' , 'W' ) ! T-, W-point |
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352 | DO ji = 1, jpi |
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353 | ijt = jpi-ji+1 |
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354 | pt2d(ji, 1 ) = 0.e0 |
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355 | pt2d(ji,jpj) = psgn * pt2d(ijt,jpj-1) |
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356 | END DO |
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357 | |
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358 | CASE ( 'U' ) ! U-point |
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359 | DO ji = 1, jpi-1 |
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360 | iju = jpi-ji |
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361 | pt2d(ji, 1 ) = 0.e0 |
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362 | pt2d(ji,jpj) = psgn * pt2d(iju,jpj-1) |
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363 | END DO |
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364 | |
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365 | CASE ( 'V' ) ! V-point |
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366 | DO ji = 1, jpi |
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367 | ijt = jpi-ji+1 |
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368 | pt2d(ji, 1 ) = 0.e0 |
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369 | pt2d(ji,jpj) = psgn * pt2d(ijt,jpj-2) |
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370 | END DO |
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371 | DO ji = jpi/2+1, jpi |
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372 | ijt = jpi-ji+1 |
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373 | pt2d(ji,jpjm1) = psgn * pt2d(ijt,jpjm1) |
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374 | END DO |
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375 | |
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376 | CASE ( 'F' ) ! F-point |
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377 | DO ji = 1, jpi-1 |
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378 | iju = jpi-ji |
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379 | pt2d(ji,jpj ) = pt2d(iju,jpj-2) |
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380 | END DO |
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381 | DO ji = jpi/2+1, jpi-1 |
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382 | iju = jpi-ji |
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383 | pt2d(ji,jpjm1) = pt2d(iju,jpjm1) |
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384 | END DO |
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385 | |
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386 | CASE ( 'I' ) ! ice U-V point |
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387 | pt2d( 2 ,jpj) = 0.e0 !!bug ??? |
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388 | DO ji = 1 , jpim1 !!bug rob= 2,jpim1 |
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389 | ijt = jpi - ji !!bug rob= ijt=jpi-ji+2 ??? |
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390 | pt2d(ji,jpj)= 0.5 * ( pt2d(ji,jpjm1) + psgn * pt2d(ijt,jpjm1) ) |
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391 | END DO |
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392 | |
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393 | END SELECT |
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394 | |
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395 | CASE DEFAULT ! * closed |
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396 | |
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397 | SELECT CASE ( cd_type ) |
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398 | CASE ( 'T' , 'U' , 'V' , 'W' ) ! T-, U-, V-, W-points |
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399 | pt2d(:, 1 ) = 0.e0 |
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400 | pt2d(:,jpj) = 0.e0 |
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401 | CASE ( 'F' ) ! F-point |
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402 | pt2d(:,jpj) = 0.e0 |
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403 | CASE ( 'I' ) ! ice U-V point |
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404 | pt2d(:, 1 ) = 0.e0 |
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405 | pt2d(:,jpj) = 0.e0 |
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406 | END SELECT |
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407 | |
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408 | END SELECT |
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409 | |
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410 | END SUBROUTINE lbc_lnk_2d |
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411 | |
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412 | #endif |
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413 | |
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414 | !!====================================================================== |
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415 | END MODULE lbclnk |
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