1 | SUBROUTINE swap_timelevel |
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2 | |
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3 | !-------------------------------------------------------------------------------! |
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4 | ! Actual revisions: |
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5 | ! ----------------- |
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6 | ! |
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7 | ! |
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8 | ! Former revisions: |
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9 | ! ----------------- |
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10 | ! $Log: swap_timelevel.f90,v $ |
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11 | ! Revision 1.8 2004/01/28 15:28:18 raasch |
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12 | ! Swaping for Runge-Kutta schemes implemented |
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13 | ! |
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14 | ! Revision 1.7 2002/05/02 18:58:36 raasch |
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15 | ! Swaping of prognostic quantities re-changed to three timelevels |
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16 | ! |
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17 | ! Revision 1.6 2001/08/21 10:01:58 10:01:58 raasch (Siegfried Raasch) |
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18 | ! Surface momentum fluxes are swapped also when they are prescribed |
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19 | ! |
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20 | ! Revision 1.5 2001/03/30 07:54:39 raasch |
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21 | ! Swaping of prognostic quantities changed over from three to two timelevels, |
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22 | ! Translation of remaining German identifiers (variables, subroutines, etc.) |
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23 | ! |
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24 | ! Revision 1.4 2001/01/29 12:36:03 raasch |
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25 | ! Passive scalar is considered |
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26 | ! |
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27 | ! Revision 1.3 2001/01/25 07:26:48 raasch |
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28 | ! Sensible and latent heat fluxes are swaped, when use_surface_fluxes = .TRUE., |
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29 | ! module test_variables removed |
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30 | ! |
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31 | ! Revision 1.2 2000/04/13 13:59:26 schroeter |
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32 | ! + swapping timelevels of moisture variables |
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33 | ! |
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34 | ! Revision 1.1 2000/01/10 10:08:58 10:08:58 raasch (Siegfried Raasch) |
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35 | ! Initial revision |
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36 | ! |
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37 | ! |
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38 | ! Description: |
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39 | ! ------------ |
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40 | ! Swap of timelevels of variables after each timestep |
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41 | !-------------------------------------------------------------------------------! |
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42 | |
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43 | USE arrays_3d |
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44 | USE cpulog |
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45 | USE interfaces |
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46 | USE control_parameters |
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47 | |
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48 | IMPLICIT NONE |
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49 | |
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50 | |
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51 | CALL cpu_log( log_point(28), 'swap_timelevel', 'start' ) |
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52 | |
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53 | ! |
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54 | !-- Incrementing timestep counter |
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55 | timestep_count = timestep_count + 1 |
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56 | |
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57 | ! |
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58 | !-- Swap of 3-level variables |
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59 | IF ( timestep_scheme(1:5) /= 'runge' ) THEN |
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60 | |
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61 | SELECT CASE ( MOD( timestep_count, 3 ) ) |
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62 | |
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63 | CASE ( 0 ) |
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64 | |
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65 | u_m => u_1; u => u_2; u_p => u_3 |
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66 | v_m => v_1; v => v_2; v_p => v_3 |
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67 | w_m => w_1; w => w_2; w_p => w_3 |
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68 | pt_m => pt_1; pt => pt_2; pt_p => pt_3 |
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69 | IF ( .NOT. constant_diffusion ) THEN |
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70 | e_m => e_1; e => e_2; e_p => e_3 |
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71 | ENDIF |
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72 | IF ( moisture .OR. passive_scalar ) THEN |
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73 | q_m => q_1; q => q_2; q_p => q_3 |
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74 | ENDIF |
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75 | |
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76 | CASE ( 1 ) |
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77 | |
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78 | u_m => u_2; u => u_3; u_p => u_1 |
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79 | v_m => v_2; v => v_3; v_p => v_1 |
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80 | w_m => w_2; w => w_3; w_p => w_1 |
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81 | pt_m => pt_2; pt => pt_3; pt_p => pt_1 |
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82 | IF ( .NOT. constant_diffusion ) THEN |
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83 | e_m => e_2; e => e_3; e_p => e_1 |
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84 | ENDIF |
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85 | IF ( moisture .OR. passive_scalar ) THEN |
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86 | q_m => q_2; q => q_3; q_p => q_1 |
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87 | ENDIF |
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88 | |
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89 | CASE ( 2 ) |
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90 | |
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91 | u_m => u_3; u => u_1; u_p => u_2 |
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92 | v_m => v_3; v => v_1; v_p => v_2 |
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93 | w_m => w_3; w => w_1; w_p => w_2 |
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94 | pt_m => pt_3; pt => pt_1; pt_p => pt_2 |
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95 | IF ( .NOT. constant_diffusion ) THEN |
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96 | e_m => e_3; e => e_1; e_p => e_2 |
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97 | ENDIF |
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98 | IF ( moisture .OR. passive_scalar ) THEN |
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99 | q_m => q_3; q => q_1; q_p => q_2 |
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100 | ENDIF |
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101 | |
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102 | END SELECT |
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103 | |
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104 | ENDIF |
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105 | |
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106 | ! |
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107 | !-- Swap of 2-level variables |
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108 | SELECT CASE ( MOD( timestep_count, 2 ) ) |
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109 | |
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110 | CASE ( 0 ) |
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111 | |
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112 | IF ( timestep_scheme(1:5) == 'runge' ) THEN |
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113 | |
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114 | u => u_1; u_p => u_2 |
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115 | v => v_1; v_p => v_2 |
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116 | w => w_1; w_p => w_2 |
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117 | pt => pt_1; pt_p => pt_2 |
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118 | IF ( .NOT. constant_diffusion ) THEN |
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119 | e => e_1; e_p => e_2 |
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120 | ENDIF |
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121 | IF ( moisture .OR. passive_scalar ) THEN |
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122 | q => q_1; q_p => q_2 |
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123 | ENDIF |
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124 | |
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125 | ELSE |
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126 | ! |
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127 | !-- Old timelevels are needed for explicit diffusion within leapfrog |
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128 | IF ( .NOT. constant_diffusion ) THEN |
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129 | kh_m => kh_1; kh => kh_2 |
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130 | km_m => km_1; km => km_2 |
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131 | IF ( use_surface_fluxes ) THEN |
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132 | usws_m => usws_1; usws => usws_2 |
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133 | vsws_m => vsws_1; vsws => vsws_2 |
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134 | shf_m => shf_1; shf => shf_2 |
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135 | IF ( moisture .OR. passive_scalar ) THEN |
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136 | qsws_m => qsws_1; qsws => qsws_2 |
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137 | ENDIF |
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138 | ENDIF |
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139 | IF ( prandtl_layer ) THEN |
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140 | rif_m => rif_1; rif => rif_2 |
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141 | ENDIF |
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142 | ENDIF |
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143 | |
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144 | IF ( moisture ) THEN |
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145 | vpt_m => vpt_1; vpt => vpt_2 |
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146 | ENDIF |
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147 | |
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148 | ENDIF |
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149 | |
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150 | CASE ( 1 ) |
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151 | |
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152 | IF ( timestep_scheme(1:5) == 'runge' ) THEN |
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153 | |
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154 | u => u_2; u_p => u_1 |
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155 | v => v_2; v_p => v_1 |
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156 | w => w_2; w_p => w_1 |
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157 | pt => pt_2; pt_p => pt_1 |
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158 | IF ( .NOT. constant_diffusion ) THEN |
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159 | e => e_2; e_p => e_1 |
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160 | ENDIF |
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161 | IF ( moisture .OR. passive_scalar ) THEN |
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162 | q => q_2; q_p => q_1 |
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163 | ENDIF |
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164 | |
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165 | ELSE |
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166 | |
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167 | IF ( .NOT. constant_diffusion ) THEN |
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168 | kh_m => kh_2; kh => kh_1 |
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169 | km_m => km_2; km => km_1 |
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170 | IF ( use_surface_fluxes ) THEN |
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171 | usws_m => usws_2; usws => usws_1 |
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172 | vsws_m => vsws_2; vsws => vsws_1 |
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173 | shf_m => shf_2; shf => shf_1 |
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174 | IF ( moisture .OR. passive_scalar ) THEN |
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175 | qsws_m => qsws_2; qsws => qsws_1 |
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176 | ENDIF |
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177 | ENDIF |
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178 | IF ( prandtl_layer ) THEN |
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179 | rif_m => rif_2; rif => rif_1 |
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180 | ENDIF |
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181 | ENDIF |
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182 | |
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183 | IF ( moisture ) THEN |
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184 | vpt_m => vpt_2; vpt => vpt_1 |
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185 | ENDIF |
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186 | |
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187 | ENDIF |
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188 | |
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189 | END SELECT |
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190 | |
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191 | CALL cpu_log( log_point(28), 'swap_timelevel', 'stop' ) |
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192 | |
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193 | END SUBROUTINE swap_timelevel |
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194 | |
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195 | |
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