1 | !> @file init_grid.f90 |
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2 | !------------------------------------------------------------------------------! |
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3 | ! This file is part of the PALM model system. |
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4 | ! |
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5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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6 | ! terms of the GNU General Public License as published by the Free Software |
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7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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8 | ! version. |
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9 | ! |
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10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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13 | ! |
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14 | ! You should have received a copy of the GNU General Public License along with |
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15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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16 | ! |
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17 | ! Copyright 1997-2019 Leibniz Universitaet Hannover |
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18 | !------------------------------------------------------------------------------! |
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19 | ! |
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20 | ! Current revisions: |
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21 | ! ----------------- |
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22 | ! |
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23 | ! |
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24 | ! Former revisions: |
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25 | ! ----------------- |
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26 | ! $Id: init_grid.f90 3857 2019-04-03 13:00:16Z knoop $ |
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27 | ! In projection of non-building 3D objects onto numerical grid remove |
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28 | ! dependency on building_type |
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29 | ! |
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30 | ! 3763 2019-02-25 17:33:49Z suehring |
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31 | ! Replace work-around for ghost point exchange of 1-byte arrays with specific |
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32 | ! routine as already done in other routines |
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33 | ! |
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34 | ! 3761 2019-02-25 15:31:42Z raasch |
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35 | ! unused variables removed |
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36 | ! |
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37 | ! 3661 2019-01-08 18:22:50Z suehring |
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38 | ! Remove setting of nzb_max to nzt at non-cyclic boundary PEs, instead, |
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39 | ! order degradation of advection scheme is handeled directly in advec_ws |
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40 | ! |
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41 | ! 3655 2019-01-07 16:51:22Z knoop |
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42 | ! Comment added |
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43 | ! |
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44 | ! 3294 2018-10-01 02:37:10Z raasch |
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45 | ! ocean renamed ocean_mode |
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46 | ! |
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47 | ! 3241 2018-09-12 15:02:00Z raasch |
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48 | ! unused variables removed |
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49 | ! |
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50 | ! 3200 2018-08-17 14:46:36Z suehring |
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51 | ! Bugfix, missing pre-processor directive |
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52 | ! |
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53 | ! 3183 2018-07-27 14:25:55Z suehring |
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54 | ! Rename variables in mesoscale-offline nesting mode |
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55 | ! |
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56 | ! 3182 2018-07-27 13:36:03Z suehring |
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57 | ! Bugfix in referencing buildings on orography top |
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58 | ! |
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59 | ! 3139 2018-07-17 11:30:10Z Giersch |
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60 | ! Bugfix in case of restarts and grid stretching |
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61 | ! |
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62 | ! 3115 2018-07-10 12:49:26Z suehring |
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63 | ! Referencing of buildings onto top of terrain - special treatment for bridges. |
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64 | ! |
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65 | ! 3103 2018-07-04 17:30:52Z suehring |
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66 | ! Reference lowest terrain height to zero level |
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67 | ! |
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68 | ! 3068 2018-06-12 14:49:41Z Giersch |
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69 | ! New warning message concerning grid stretching has been introduced |
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70 | ! |
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71 | ! 3066 2018-06-12 08:55:55Z Giersch |
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72 | ! Bugfix in IF statement before error message |
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73 | ! |
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74 | ! 3065 2018-06-12 07:03:02Z Giersch |
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75 | ! New vertical stretching mechanism introduced |
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76 | ! |
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77 | ! 3051 2018-05-30 17:43:55Z suehring |
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78 | ! Minor bugfix concerning mapping 3D buildings on top of terrain |
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79 | ! |
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80 | ! 3045 2018-05-28 07:55:41Z Giersch |
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81 | ! Error messages revised |
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82 | ! |
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83 | ! 3045 2018-05-28 07:55:41Z Giersch |
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84 | ! Error messages revised |
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85 | ! |
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86 | ! 2968 2018-04-13 11:52:24Z suehring |
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87 | ! Bugfix in initialization in case of elevated model surface. Introduce |
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88 | ! index for minimum topography-top. |
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89 | ! |
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90 | ! 2955 2018-04-09 15:14:01Z suehring |
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91 | ! Improve topography filter routine and add ghost-point exchange for building |
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92 | ! ID and building type. |
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93 | ! |
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94 | ! 2927 2018-03-23 15:13:00Z suehring |
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95 | ! Bugfix, setting boundary conditions for topography index array. |
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96 | ! |
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97 | ! 2918 2018-03-21 15:52:14Z gronemeier |
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98 | ! Moved init_mixing_length to turbulence_closure_mod.f90 |
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99 | ! |
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100 | ! 2897 2018-03-15 11:47:16Z suehring |
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101 | ! Relax restrictions for topography input, terrain and building heights can be |
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102 | ! input separately and are not mandatory any more. |
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103 | ! |
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104 | ! 2893 2018-03-14 16:20:52Z suehring |
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105 | ! Revise informative message concerning filtered topography (1 grid-point |
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106 | ! holes). |
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107 | ! |
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108 | ! 2892 2018-03-14 15:06:29Z suehring |
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109 | ! Bugfix, uninitialized array in case of single_building. |
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110 | ! |
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111 | ! 2867 2018-03-09 09:40:23Z suehring |
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112 | ! Revise mapping of 3D buildings onto onto orography. |
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113 | ! |
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114 | ! 2823 2018-02-20 15:31:45Z Giersch |
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115 | ! Set boundary conditions for 3D topography in case of non-cyclic boundary |
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116 | ! conditions |
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117 | ! |
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118 | ! 2796 2018-02-08 12:25:39Z suehring |
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119 | ! Bugfix in 3D building initialization |
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120 | ! |
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121 | ! 2747 2018-01-15 12:44:17Z suehring |
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122 | ! Bugfix, topography height is rounded to the nearest discrete grid level |
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123 | ! |
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124 | ! 2718 2018-01-02 08:49:38Z maronga |
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125 | ! Corrected "Former revisions" section |
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126 | ! |
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127 | ! 2701 2017-12-15 15:40:50Z suehring |
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128 | ! Changes from last commit documented |
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129 | ! |
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130 | ! 2698 2017-12-14 18:46:24Z suehring |
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131 | ! Bugfix in get_topography_top_index |
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132 | ! |
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133 | ! 2696 2017-12-14 17:12:51Z kanani |
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134 | ! Change in file header (GPL part) |
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135 | ! Revised topography input |
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136 | ! Set nzb_max not for the entire nest domain, only for boundary PEs |
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137 | ! Re-organize routine, split-up into several subroutines |
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138 | ! Modularize poismg_noopt |
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139 | ! Remove setting bit 26, 27, 28 in wall_flags_0, indicating former '_outer' |
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140 | ! arrays (not required any more). |
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141 | ! Bugfix in generic tunnel setup (MS) |
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142 | ! |
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143 | ! 2550 2017-10-16 17:12:01Z boeske |
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144 | ! Set lateral boundary conditions for topography on all three ghost layers |
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145 | ! |
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146 | ! 2478 2017-09-18 13:37:24Z suehring |
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147 | ! Bugfix, correct flag for use_top |
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148 | ! |
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149 | ! 2365 2017-08-21 14:59:59Z kanani |
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150 | ! Vertical nesting implemented (SadiqHuq) |
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151 | ! |
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152 | ! 2319 2017-07-20 17:33:17Z suehring |
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153 | ! Remove print statements |
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154 | ! |
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155 | ! 2318 2017-07-20 17:27:44Z suehring |
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156 | ! Get topography top index via Function call |
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157 | ! |
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158 | ! 2317 2017-07-20 17:27:19Z suehring |
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159 | ! Bugfixes in reading 3D topography from file |
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160 | ! |
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161 | ! 2274 2017-06-09 13:27:48Z Giersch |
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162 | ! Changed error messages |
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163 | ! |
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164 | ! 2233 2017-05-30 18:08:54Z suehring |
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165 | ! |
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166 | ! 2232 2017-05-30 17:47:52Z suehring |
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167 | ! - Adjustments according to new topography representation |
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168 | ! - Bugfix: Move determination of nzb_max behind topography modification in |
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169 | ! cell-edge case |
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170 | ! - Get rid off global arrays required for topography output |
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171 | ! - Enable topography input via netcdf |
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172 | ! - Generic tunnel set-up added |
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173 | ! |
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174 | ! 2200 2017-04-11 11:37:51Z suehring |
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175 | ! monotonic_adjustment removed |
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176 | ! |
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177 | ! 2169 2017-03-06 18:16:35Z suehring |
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178 | ! Bugfix, move setting for topography grid convention to init_grid, else, if no |
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179 | ! value is set, the simulation may abort in case of restarts |
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180 | ! |
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181 | ! 2128 2017-01-23 15:00:03Z suehring |
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182 | ! Bugfix in setting topography from file in case of ocean simulations |
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183 | ! |
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184 | ! 2088 2016-12-19 16:30:25Z suehring |
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185 | ! Bugfix in generic topography in case of ocean simulations |
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186 | ! |
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187 | ! 2037 2016-10-26 11:15:40Z knoop |
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188 | ! Anelastic approximation implemented |
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189 | ! |
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190 | ! 2021 2016-10-07 14:08:57Z suehring |
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191 | ! Bugfix: setting Neumann boundary conditions for topography required for |
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192 | ! topography flags in multigrid_noopt solver |
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193 | ! |
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194 | ! 2000 2016-08-20 18:09:15Z knoop |
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195 | ! Forced header and separation lines into 80 columns |
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196 | ! |
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197 | ! 1994 2016-08-15 09:52:21Z suehring |
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198 | ! Bugfix in definition of generic topography |
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199 | ! |
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200 | ! 1982 2016-08-01 11:04:48Z suehring |
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201 | ! Bugfix concering consistency check for topography |
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202 | ! |
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203 | ! 1968 2016-07-18 12:01:49Z suehring |
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204 | ! Changed: PE-wise reading of topography file in order to avoid global definition |
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205 | ! of arrays nzb_local and nzb_tmp. Thereby, topography definition for single |
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206 | ! buildings and street canyons has changed, as well as flag setting for |
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207 | ! multigrid scheme. |
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208 | ! |
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209 | ! Bugfix in checking l_grid anisotropy. |
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210 | ! Simplify initial computation of lwall and vertical_influence, i.e. remove |
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211 | ! nzb_s_inner as it is still zero at this point. |
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212 | ! |
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213 | ! 1942 2016-06-14 12:18:18Z suehring |
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214 | ! Topography filter implemented to fill holes resolved by only one grid point. |
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215 | ! Initialization of flags for ws-scheme moved to advec_ws. |
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216 | ! |
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217 | ! 1931 2016-06-10 12:06:59Z suehring |
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218 | ! Rename multigrid into multigrid_noopt and multigrid_fast into multigrid |
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219 | ! |
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220 | ! 1910 2016-05-26 06:49:46Z raasch |
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221 | ! Bugfix: if topography is read from file, Neumann conditions are used for the |
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222 | ! nzb_local array (instead of cyclic conditions) in case that non-cyclic |
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223 | ! boundary conditions are switched on for the run |
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224 | ! |
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225 | ! 1902 2016-05-09 11:18:56Z suehring |
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226 | ! Set topography flags for multigrid solver only (not for multigrid_fast) |
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227 | ! |
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228 | ! 1886 2016-04-21 11:20:47Z suehring |
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229 | ! Bugfix: setting advection flags near walls |
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230 | ! reformulated index values for nzb_v_inner |
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231 | ! variable discriptions added in declaration block |
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232 | ! |
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233 | ! 1845 2016-04-08 08:29:13Z raasch |
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234 | ! nzb_2d removed |
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235 | ! |
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236 | ! 1804 2016-04-05 16:30:18Z maronga |
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237 | ! Removed code for parameter file check (__check) |
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238 | ! |
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239 | ! 1779 2016-03-03 08:01:28Z raasch |
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240 | ! coupling_char is trimmed at every place it occurs, because it can have |
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241 | ! different length now |
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242 | ! |
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243 | ! 1762 2016-02-25 12:31:13Z hellstea |
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244 | ! Introduction of nested domain feature |
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245 | ! |
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246 | ! 1743 2016-01-13 10:23:51Z raasch |
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247 | ! Bugfix for calculation of nzb_s_outer and nzb_u_outer at north boundary of |
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248 | ! total domain |
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249 | ! |
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250 | ! 1691 2015-10-26 16:17:44Z maronga |
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251 | ! Renamed prandtl_layer to constant_flux_layer. |
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252 | ! |
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253 | ! 1682 2015-10-07 23:56:08Z knoop |
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254 | ! Code annotations made doxygen readable |
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255 | ! |
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256 | ! 1677 2015-10-02 13:25:23Z boeske |
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257 | ! Bugfix: Ghost points are included in wall_flags_0 and wall_flags_00 |
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258 | ! |
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259 | ! 1675 2015-10-02 08:28:59Z gronemeier |
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260 | ! Bugfix: Definition of topography grid levels |
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261 | ! |
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262 | ! 1660 2015-09-21 08:15:16Z gronemeier |
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263 | ! Bugfix: Definition of topography grid levels if vertical grid stretching |
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264 | ! starts below the maximum topography height. |
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265 | ! |
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266 | ! 1580 2015-04-10 13:43:49Z suehring |
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267 | ! Bugfix: setting flags for 5th order scheme near buildings |
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268 | ! |
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269 | ! 1575 2015-03-27 09:56:27Z raasch |
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270 | ! adjustments for psolver-queries |
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271 | ! |
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272 | ! 1557 2015-03-05 16:43:04Z suehring |
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273 | ! Adjustment for monotoinic limiter |
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274 | ! |
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275 | ! 1418 2014-06-06 13:05:08Z fricke |
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276 | ! Bugfix: Change if-condition for stretched grid in the ocean, with the old |
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277 | ! condition and a negative value for dz_stretch_level the condition |
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278 | ! was always true for the whole model domain |
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279 | ! |
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280 | ! 1409 2014-05-23 12:11:32Z suehring |
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281 | ! Bugfix: set wall_flags_0 at inflow and outflow boundary also for i <= nxlu |
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282 | ! j <= nysv |
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283 | ! |
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284 | ! 1353 2014-04-08 15:21:23Z heinze |
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285 | ! REAL constants provided with KIND-attribute |
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286 | ! |
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287 | ! 1322 2014-03-20 16:38:49Z raasch |
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288 | ! REAL constants defined as wp-kind |
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289 | ! |
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290 | ! 1320 2014-03-20 08:40:49Z raasch |
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291 | ! ONLY-attribute added to USE-statements, |
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292 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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293 | ! kinds are defined in new module kinds, |
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294 | ! revision history before 2012 removed, |
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295 | ! comment fields (!:) to be used for variable explanations added to |
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296 | ! all variable declaration statements |
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297 | ! |
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298 | ! 1221 2013-09-10 08:59:13Z raasch |
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299 | ! wall_flags_00 introduced to hold bits 32-63, |
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300 | ! additional 3D-flag arrays for replacing the 2D-index array nzb_s_inner in |
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301 | ! loops optimized for openACC (pres + flow_statistics) |
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302 | ! |
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303 | ! 1092 2013-02-02 11:24:22Z raasch |
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304 | ! unused variables removed |
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305 | ! |
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306 | ! 1069 2012-11-28 16:18:43Z maronga |
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307 | ! bugfix: added coupling_char to TOPOGRAPHY_DATA to allow topography in the |
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308 | ! ocean model in case of coupled runs |
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309 | ! |
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310 | ! 1036 2012-10-22 13:43:42Z raasch |
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311 | ! code put under GPL (PALM 3.9) |
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312 | ! |
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313 | ! 1015 2012-09-27 09:23:24Z raasch |
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314 | ! lower index for calculating wall_flags_0 set to nzb_w_inner instead of |
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315 | ! nzb_w_inner+1 |
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316 | ! |
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317 | ! 996 2012-09-07 10:41:47Z raasch |
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318 | ! little reformatting |
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319 | ! |
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320 | ! 978 2012-08-09 08:28:32Z fricke |
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321 | ! Bugfix: nzb_max is set to nzt at non-cyclic lateral boundaries |
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322 | ! Bugfix: Set wall_flags_0 for inflow boundary |
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323 | ! |
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324 | ! 927 2012-06-06 19:15:04Z raasch |
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325 | ! Wall flags are not set for multigrid method in case of masking method |
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326 | ! |
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327 | ! 864 2012-03-27 15:10:33Z gryschka |
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328 | ! In case of ocean and Dirichlet bottom bc for u and v dzu_mg and ddzu_pres |
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329 | ! were not correctly defined for k=1. |
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330 | ! |
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331 | ! 861 2012-03-26 14:18:34Z suehring |
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332 | ! Set wall_flags_0. The array is needed for degradation in ws-scheme near walls, |
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333 | ! inflow and outflow boundaries as well as near the bottom and the top of the |
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334 | ! model domain.! |
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335 | ! Initialization of nzb_s_inner and nzb_w_inner. |
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336 | ! gls has to be at least nbgp to do not exceed the array bounds of nzb_local |
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337 | ! while setting wall_flags_0 |
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338 | ! |
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339 | ! 843 2012-02-29 15:16:21Z gryschka |
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340 | ! In case of ocean and dirichlet bc for u and v at the bottom |
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341 | ! the first u-level ist defined at same height as the first w-level |
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342 | ! |
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343 | ! 818 2012-02-08 16:11:23Z maronga |
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344 | ! Bugfix: topo_height is only required if topography is used. It is thus now |
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345 | ! allocated in the topography branch |
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346 | ! |
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347 | ! 809 2012-01-30 13:32:58Z maronga |
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348 | ! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives |
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349 | ! |
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350 | ! 807 2012-01-25 11:53:51Z maronga |
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351 | ! New cpp directive "__check" implemented which is used by check_namelist_files |
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352 | ! |
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353 | ! Revision 1.1 1997/08/11 06:17:45 raasch |
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354 | ! Initial revision (Testversion) |
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355 | ! |
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356 | ! |
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357 | ! Description: |
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358 | ! -----------------------------------------------------------------------------! |
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359 | !> Creating grid depending constants |
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360 | !> @todo: Rearrange topo flag list |
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361 | !> @todo: reference 3D buildings on top of orography is not tested and may need |
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362 | !> further improvement for steep slopes |
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363 | !> @todo: Use more advanced setting of building type at filled holes |
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364 | !------------------------------------------------------------------------------! |
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365 | SUBROUTINE init_grid |
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366 | |
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367 | USE advec_ws, & |
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368 | ONLY: ws_init_flags |
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369 | |
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370 | USE arrays_3d, & |
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371 | ONLY: dd2zu, ddzu, ddzu_pres, ddzw, dzu, dzw, x, xu, y, yv, zu, zw |
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372 | |
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373 | USE control_parameters, & |
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374 | ONLY: bc_lr_cyc, bc_ns_cyc, & |
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375 | constant_flux_layer, dz, dz_max, dz_stretch_factor, & |
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376 | dz_stretch_factor_array, dz_stretch_level, dz_stretch_level_end,& |
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377 | dz_stretch_level_end_index, dz_stretch_level_start_index, & |
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378 | dz_stretch_level_start, ibc_uv_b, message_string, & |
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379 | momentum_advec, number_stretch_level_end, & |
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380 | number_stretch_level_start, ocean_mode, psolver, scalar_advec, & |
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381 | topography, use_surface_fluxes |
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382 | |
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383 | USE grid_variables, & |
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384 | ONLY: ddx, ddx2, ddy, ddy2, dx, dx2, dy, dy2, zu_s_inner, zw_w_inner |
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385 | |
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386 | USE indices, & |
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387 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nz, & |
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388 | nzb, nzb_diff, nzb_diff_s_inner, nzb_diff_s_outer, & |
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389 | nzb_max, nzb_s_inner, nzb_s_outer, nzb_u_inner, & |
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390 | nzb_u_outer, nzb_v_inner, nzb_v_outer, nzb_w_inner, & |
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391 | nzb_w_outer, nzt, topo_min_level |
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392 | |
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393 | USE kinds |
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394 | |
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395 | USE pegrid |
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396 | |
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397 | USE poismg_noopt_mod |
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398 | |
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399 | USE surface_mod, & |
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400 | ONLY: get_topography_top_index, get_topography_top_index_ji, init_bc |
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401 | |
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402 | USE vertical_nesting_mod, & |
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403 | ONLY: vnested, vnest_init_grid |
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404 | |
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405 | IMPLICIT NONE |
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406 | |
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407 | INTEGER(iwp) :: i !< index variable along x |
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408 | INTEGER(iwp) :: j !< index variable along y |
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409 | INTEGER(iwp) :: k !< index variable along z |
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410 | INTEGER(iwp) :: k_top !< topography top index on local PE |
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411 | INTEGER(iwp) :: n !< loop variable for stretching |
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412 | INTEGER(iwp) :: number_dz !< number of user-specified dz values |
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413 | INTEGER(iwp) :: nzb_local_max !< vertical grid index of maximum topography height |
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414 | INTEGER(iwp) :: nzb_local_min !< vertical grid index of minimum topography height |
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415 | |
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416 | INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: nzb_local !< index for topography top at cell-center |
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417 | INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: nzb_tmp !< dummy to calculate topography indices on u- and v-grid |
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418 | |
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419 | INTEGER(iwp), DIMENSION(:,:,:), ALLOCATABLE :: topo !< input array for 3D topography and dummy array for setting "outer"-flags |
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420 | |
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421 | REAL(wp) :: dz_level_end !< distance between calculated height level for u/v-grid and user-specified end level for stretching |
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422 | REAL(wp) :: dz_stretched !< stretched vertical grid spacing |
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423 | |
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424 | REAL(wp), DIMENSION(:), ALLOCATABLE :: min_dz_stretch_level_end !< Array that contains all minimum heights where the stretching can end |
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425 | |
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426 | |
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427 | ! |
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428 | !-- Calculation of horizontal array bounds including ghost layers |
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429 | nxlg = nxl - nbgp |
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430 | nxrg = nxr + nbgp |
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431 | nysg = nys - nbgp |
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432 | nyng = nyn + nbgp |
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433 | |
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434 | ! |
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435 | !-- Allocate grid arrays |
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436 | ALLOCATE( x(0:nx), xu(0:nx) ) |
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437 | DO i = 0, nx |
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438 | xu(i) = i * dx |
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439 | x(i) = i * dx + 0.5_wp * dx |
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440 | ENDDO |
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441 | |
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442 | ALLOCATE( y(0:ny), yv(0:ny) ) |
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443 | DO j = 0, ny |
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444 | yv(j) = j * dy |
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445 | y(j) = j * dy + 0.5_wp * dy |
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446 | ENDDO |
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447 | |
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448 | ! |
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449 | !-- Allocate grid arrays |
---|
450 | ALLOCATE( ddzu(1:nzt+1), ddzw(1:nzt+1), dd2zu(1:nzt), dzu(1:nzt+1), & |
---|
451 | dzw(1:nzt+1), zu(nzb:nzt+1), zw(nzb:nzt+1) ) |
---|
452 | |
---|
453 | ! |
---|
454 | !-- Compute height of u-levels from constant grid length and dz stretch factors |
---|
455 | IF ( dz(1) == -1.0_wp ) THEN |
---|
456 | message_string = 'missing dz' |
---|
457 | CALL message( 'init_grid', 'PA0200', 1, 2, 0, 6, 0 ) |
---|
458 | ELSEIF ( dz(1) <= 0.0_wp ) THEN |
---|
459 | WRITE( message_string, * ) 'dz=',dz(1),' <= 0.0' |
---|
460 | CALL message( 'init_grid', 'PA0201', 1, 2, 0, 6, 0 ) |
---|
461 | ENDIF |
---|
462 | |
---|
463 | ! |
---|
464 | !-- Initialize dz_stretch_level_start with the value of dz_stretch_level |
---|
465 | !-- if it was set by the user |
---|
466 | IF ( dz_stretch_level /= -9999999.9_wp ) THEN |
---|
467 | dz_stretch_level_start(1) = dz_stretch_level |
---|
468 | ENDIF |
---|
469 | |
---|
470 | ! |
---|
471 | !-- Determine number of dz values and stretching levels specified by the |
---|
472 | !-- user to allow right controlling of the stretching mechanism and to |
---|
473 | !-- perform error checks. The additional requirement that dz /= dz_max |
---|
474 | !-- for counting number of user-specified dz values is necessary. Otherwise |
---|
475 | !-- restarts would abort if the old stretching mechanism with dz_stretch_level |
---|
476 | !-- is used (Attention: The user is not allowed to specify a dz value equal |
---|
477 | !-- to the default of dz_max = 999.0). |
---|
478 | number_dz = COUNT( dz /= -1.0_wp .AND. dz /= dz_max) |
---|
479 | number_stretch_level_start = COUNT( dz_stretch_level_start /= & |
---|
480 | -9999999.9_wp ) |
---|
481 | number_stretch_level_end = COUNT( dz_stretch_level_end /= & |
---|
482 | 9999999.9_wp ) |
---|
483 | |
---|
484 | ! |
---|
485 | !-- The number of specified end levels +1 has to be the same than the number |
---|
486 | !-- of specified dz values |
---|
487 | IF ( number_dz /= number_stretch_level_end + 1 ) THEN |
---|
488 | WRITE( message_string, * ) 'The number of values for dz = ', & |
---|
489 | number_dz, 'has to be the same than& ', & |
---|
490 | 'the number of values for ', & |
---|
491 | 'dz_stretch_level_end + 1 = ', & |
---|
492 | number_stretch_level_end+1 |
---|
493 | CALL message( 'init_grid', 'PA0156', 1, 2, 0, 6, 0 ) |
---|
494 | ENDIF |
---|
495 | |
---|
496 | ! |
---|
497 | !-- The number of specified start levels has to be the same or one less than |
---|
498 | !-- the number of specified dz values |
---|
499 | IF ( number_dz /= number_stretch_level_start + 1 .AND. & |
---|
500 | number_dz /= number_stretch_level_start ) THEN |
---|
501 | WRITE( message_string, * ) 'The number of values for dz = ', & |
---|
502 | number_dz, 'has to be the same or one ', & |
---|
503 | 'more than& the number of values for ', & |
---|
504 | 'dz_stretch_level_start = ', & |
---|
505 | number_stretch_level_start |
---|
506 | CALL message( 'init_grid', 'PA0211', 1, 2, 0, 6, 0 ) |
---|
507 | ENDIF |
---|
508 | |
---|
509 | !-- The number of specified start levels has to be the same or one more than |
---|
510 | !-- the number of specified end levels |
---|
511 | IF ( number_stretch_level_start /= number_stretch_level_end + 1 .AND. & |
---|
512 | number_stretch_level_start /= number_stretch_level_end ) THEN |
---|
513 | WRITE( message_string, * ) 'The number of values for ', & |
---|
514 | 'dz_stretch_level_start = ', & |
---|
515 | dz_stretch_level_start, 'has to be the ',& |
---|
516 | 'same or one more than& the number of ', & |
---|
517 | 'values for dz_stretch_level_end = ', & |
---|
518 | number_stretch_level_end |
---|
519 | CALL message( 'init_grid', 'PA0216', 1, 2, 0, 6, 0 ) |
---|
520 | ENDIF |
---|
521 | |
---|
522 | ! |
---|
523 | !-- Initialize dz for the free atmosphere with the value of dz_max |
---|
524 | IF ( dz(number_stretch_level_start+1) == -1.0_wp .AND. & |
---|
525 | number_stretch_level_start /= 0 ) THEN |
---|
526 | dz(number_stretch_level_start+1) = dz_max |
---|
527 | ENDIF |
---|
528 | |
---|
529 | ! |
---|
530 | !-- Initialize the stretching factor if (infinitely) stretching in the free |
---|
531 | !-- atmosphere is desired (dz_stretch_level_end was not specified for the |
---|
532 | !-- free atmosphere) |
---|
533 | IF ( number_stretch_level_start == number_stretch_level_end + 1 ) THEN |
---|
534 | dz_stretch_factor_array(number_stretch_level_start) = & |
---|
535 | dz_stretch_factor |
---|
536 | ENDIF |
---|
537 | |
---|
538 | ! |
---|
539 | !-- Allocation of arrays for stretching |
---|
540 | ALLOCATE( min_dz_stretch_level_end(number_stretch_level_start) ) |
---|
541 | |
---|
542 | ! |
---|
543 | !-- Define the vertical grid levels |
---|
544 | IF ( .NOT. ocean_mode ) THEN |
---|
545 | |
---|
546 | ! |
---|
547 | !-- The stretching region has to be large enough to allow for a smooth |
---|
548 | !-- transition between two different grid spacings |
---|
549 | DO n = 1, number_stretch_level_start |
---|
550 | min_dz_stretch_level_end(n) = dz_stretch_level_start(n) + & |
---|
551 | 4 * MAX( dz(n),dz(n+1) ) |
---|
552 | ENDDO |
---|
553 | |
---|
554 | IF ( ANY( min_dz_stretch_level_end(1:number_stretch_level_start) > & |
---|
555 | dz_stretch_level_end(1:number_stretch_level_start) ) ) THEN |
---|
556 | message_string= 'Eeach dz_stretch_level_end has to be larger ' // & |
---|
557 | 'than its corresponding value for &' // & |
---|
558 | 'dz_stretch_level_start + 4*MAX(dz(n),dz(n+1)) '//& |
---|
559 | 'to allow for smooth grid stretching' |
---|
560 | CALL message( 'init_grid', 'PA0224', 1, 2, 0, 6, 0 ) |
---|
561 | ENDIF |
---|
562 | |
---|
563 | ! |
---|
564 | !-- Stretching must not be applied within the prandtl_layer |
---|
565 | !-- (first two grid points). For the default case dz_stretch_level_start |
---|
566 | !-- is negative. Therefore the absolut value is checked here. |
---|
567 | IF ( ANY( ABS( dz_stretch_level_start ) < dz(1) * 1.5_wp ) ) THEN |
---|
568 | WRITE( message_string, * ) 'Eeach dz_stretch_level_start has to be ',& |
---|
569 | 'larger than ', dz(1) * 1.5 |
---|
570 | CALL message( 'init_grid', 'PA0226', 1, 2, 0, 6, 0 ) |
---|
571 | ENDIF |
---|
572 | |
---|
573 | ! |
---|
574 | !-- The stretching has to start and end on a grid level. Therefore |
---|
575 | !-- user-specified values have to ''interpolate'' to the next lowest level |
---|
576 | IF ( number_stretch_level_start /= 0 ) THEN |
---|
577 | dz_stretch_level_start(1) = INT( (dz_stretch_level_start(1) - & |
---|
578 | dz(1)/2.0) / dz(1) ) & |
---|
579 | * dz(1) + dz(1)/2.0 |
---|
580 | ENDIF |
---|
581 | |
---|
582 | IF ( number_stretch_level_start > 1 ) THEN |
---|
583 | DO n = 2, number_stretch_level_start |
---|
584 | dz_stretch_level_start(n) = INT( dz_stretch_level_start(n) / & |
---|
585 | dz(n) ) * dz(n) |
---|
586 | ENDDO |
---|
587 | ENDIF |
---|
588 | |
---|
589 | IF ( number_stretch_level_end /= 0 ) THEN |
---|
590 | DO n = 1, number_stretch_level_end |
---|
591 | dz_stretch_level_end(n) = INT( dz_stretch_level_end(n) / & |
---|
592 | dz(n+1) ) * dz(n+1) |
---|
593 | ENDDO |
---|
594 | ENDIF |
---|
595 | |
---|
596 | ! |
---|
597 | !-- Determine stretching factor if necessary |
---|
598 | IF ( number_stretch_level_end >= 1 ) THEN |
---|
599 | CALL calculate_stretching_factor( number_stretch_level_end ) |
---|
600 | ENDIF |
---|
601 | |
---|
602 | ! |
---|
603 | !-- Grid for atmosphere with surface at z=0 (k=0, w-grid). |
---|
604 | !-- First compute the u- and v-levels. In case of dirichlet bc for u and v |
---|
605 | !-- the first u/v- and w-level (k=0) are defined at same height (z=0). |
---|
606 | !-- The second u-level (k=1) corresponds to the top of the |
---|
607 | !-- Prandtl-layer. |
---|
608 | IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN |
---|
609 | zu(0) = 0.0_wp |
---|
610 | ELSE |
---|
611 | zu(0) = - dz(1) * 0.5_wp |
---|
612 | ENDIF |
---|
613 | |
---|
614 | zu(1) = dz(1) * 0.5_wp |
---|
615 | |
---|
616 | ! |
---|
617 | !-- Determine u and v height levels considering the possibility of grid |
---|
618 | !-- stretching in several heights. |
---|
619 | n = 1 |
---|
620 | dz_stretch_level_start_index = nzt+1 |
---|
621 | dz_stretch_level_end_index = nzt+1 |
---|
622 | dz_stretched = dz(1) |
---|
623 | |
---|
624 | !-- The default value of dz_stretch_level_start is negative, thus the first |
---|
625 | !-- condition is always true. Hence, the second condition is necessary. |
---|
626 | DO k = 2, nzt+1 |
---|
627 | IF ( dz_stretch_level_start(n) <= zu(k-1) .AND. & |
---|
628 | dz_stretch_level_start(n) /= -9999999.9_wp ) THEN |
---|
629 | dz_stretched = dz_stretched * dz_stretch_factor_array(n) |
---|
630 | |
---|
631 | IF ( dz(n) > dz(n+1) ) THEN |
---|
632 | dz_stretched = MAX( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (higher) dz |
---|
633 | ELSE |
---|
634 | dz_stretched = MIN( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (lower) dz |
---|
635 | ENDIF |
---|
636 | |
---|
637 | IF ( dz_stretch_level_start_index(n) == nzt+1 ) & |
---|
638 | dz_stretch_level_start_index(n) = k-1 |
---|
639 | |
---|
640 | ENDIF |
---|
641 | |
---|
642 | zu(k) = zu(k-1) + dz_stretched |
---|
643 | |
---|
644 | ! |
---|
645 | !-- Make sure that the stretching ends exactly at dz_stretch_level_end |
---|
646 | dz_level_end = ABS( zu(k) - dz_stretch_level_end(n) ) |
---|
647 | |
---|
648 | IF ( dz_level_end < dz(n+1)/3.0 ) THEN |
---|
649 | zu(k) = dz_stretch_level_end(n) |
---|
650 | dz_stretched = dz(n+1) |
---|
651 | dz_stretch_level_end_index(n) = k |
---|
652 | n = n + 1 |
---|
653 | ENDIF |
---|
654 | ENDDO |
---|
655 | |
---|
656 | ! |
---|
657 | !-- Compute the w-levels. They are always staggered half-way between the |
---|
658 | !-- corresponding u-levels. In case of dirichlet bc for u and v at the |
---|
659 | !-- ground the first u- and w-level (k=0) are defined at same height (z=0). |
---|
660 | !-- The top w-level is extrapolated linearly. |
---|
661 | zw(0) = 0.0_wp |
---|
662 | DO k = 1, nzt |
---|
663 | zw(k) = ( zu(k) + zu(k+1) ) * 0.5_wp |
---|
664 | ENDDO |
---|
665 | zw(nzt+1) = zw(nzt) + 2.0_wp * ( zu(nzt+1) - zw(nzt) ) |
---|
666 | |
---|
667 | ELSE |
---|
668 | |
---|
669 | ! |
---|
670 | !-- The stretching region has to be large enough to allow for a smooth |
---|
671 | !-- transition between two different grid spacings |
---|
672 | DO n = 1, number_stretch_level_start |
---|
673 | min_dz_stretch_level_end(n) = dz_stretch_level_start(n) - & |
---|
674 | 4 * MAX( dz(n),dz(n+1) ) |
---|
675 | ENDDO |
---|
676 | |
---|
677 | IF ( ANY( min_dz_stretch_level_end (1:number_stretch_level_start) < & |
---|
678 | dz_stretch_level_end(1:number_stretch_level_start) ) ) THEN |
---|
679 | message_string= 'Eeach dz_stretch_level_end has to be less ' // & |
---|
680 | 'than its corresponding value for &' // & |
---|
681 | 'dz_stretch_level_start - 4*MAX(dz(n),dz(n+1)) '//& |
---|
682 | 'to allow for smooth grid stretching' |
---|
683 | CALL message( 'init_grid', 'PA0224', 1, 2, 0, 6, 0 ) |
---|
684 | ENDIF |
---|
685 | |
---|
686 | ! |
---|
687 | !-- Stretching must not be applied close to the surface (last two grid |
---|
688 | !-- points). For the default case dz_stretch_level_start is negative. |
---|
689 | IF ( ANY( dz_stretch_level_start > - dz(1) * 1.5_wp ) ) THEN |
---|
690 | WRITE( message_string, * ) 'Eeach dz_stretch_level_start has to be ',& |
---|
691 | 'less than ', dz(1) * 1.5 |
---|
692 | CALL message( 'init_grid', 'PA0226', 1, 2, 0, 6, 0 ) |
---|
693 | ENDIF |
---|
694 | |
---|
695 | ! |
---|
696 | !-- The stretching has to start and end on a grid level. Therefore |
---|
697 | !-- user-specified values have to ''interpolate'' to the next highest level |
---|
698 | IF ( number_stretch_level_start /= 0 ) THEN |
---|
699 | dz_stretch_level_start(1) = INT( (dz_stretch_level_start(1) + & |
---|
700 | dz(1)/2.0) / dz(1) ) & |
---|
701 | * dz(1) - dz(1)/2.0 |
---|
702 | ENDIF |
---|
703 | |
---|
704 | IF ( number_stretch_level_start > 1 ) THEN |
---|
705 | DO n = 2, number_stretch_level_start |
---|
706 | dz_stretch_level_start(n) = INT( dz_stretch_level_start(n) / & |
---|
707 | dz(n) ) * dz(n) |
---|
708 | ENDDO |
---|
709 | ENDIF |
---|
710 | |
---|
711 | IF ( number_stretch_level_end /= 0 ) THEN |
---|
712 | DO n = 1, number_stretch_level_end |
---|
713 | dz_stretch_level_end(n) = INT( dz_stretch_level_end(n) / & |
---|
714 | dz(n+1) ) * dz(n+1) |
---|
715 | ENDDO |
---|
716 | ENDIF |
---|
717 | |
---|
718 | ! |
---|
719 | !-- Determine stretching factor if necessary |
---|
720 | IF ( number_stretch_level_end >= 1 ) THEN |
---|
721 | CALL calculate_stretching_factor( number_stretch_level_end ) |
---|
722 | ENDIF |
---|
723 | |
---|
724 | ! |
---|
725 | !-- Grid for ocean with free water surface is at k=nzt (w-grid). |
---|
726 | !-- In case of neumann bc at the ground the first first u-level (k=0) lies |
---|
727 | !-- below the first w-level (k=0). In case of dirichlet bc the first u- and |
---|
728 | !-- w-level are defined at same height, but staggered from the second level. |
---|
729 | !-- The second u-level (k=1) corresponds to the top of the Prandtl-layer. |
---|
730 | !-- z values are negative starting from z=0 (surface) |
---|
731 | zu(nzt+1) = dz(1) * 0.5_wp |
---|
732 | zu(nzt) = - dz(1) * 0.5_wp |
---|
733 | |
---|
734 | ! |
---|
735 | !-- Determine u and v height levels considering the possibility of grid |
---|
736 | !-- stretching in several heights. |
---|
737 | n = 1 |
---|
738 | dz_stretch_level_start_index = 0 |
---|
739 | dz_stretch_level_end_index = 0 |
---|
740 | dz_stretched = dz(1) |
---|
741 | |
---|
742 | DO k = nzt-1, 0, -1 |
---|
743 | |
---|
744 | IF ( dz_stretch_level_start(n) >= zu(k+1) ) THEN |
---|
745 | dz_stretched = dz_stretched * dz_stretch_factor_array(n) |
---|
746 | |
---|
747 | IF ( dz(n) > dz(n+1) ) THEN |
---|
748 | dz_stretched = MAX( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (higher) dz |
---|
749 | ELSE |
---|
750 | dz_stretched = MIN( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (lower) dz |
---|
751 | ENDIF |
---|
752 | |
---|
753 | IF ( dz_stretch_level_start_index(n) == 0 ) & |
---|
754 | dz_stretch_level_start_index(n) = k+1 |
---|
755 | |
---|
756 | ENDIF |
---|
757 | |
---|
758 | zu(k) = zu(k+1) - dz_stretched |
---|
759 | |
---|
760 | ! |
---|
761 | !-- Make sure that the stretching ends exactly at dz_stretch_level_end |
---|
762 | dz_level_end = ABS( zu(k) - dz_stretch_level_end(n) ) |
---|
763 | |
---|
764 | IF ( dz_level_end < dz(n+1)/3.0 ) THEN |
---|
765 | zu(k) = dz_stretch_level_end(n) |
---|
766 | dz_stretched = dz(n+1) |
---|
767 | dz_stretch_level_end_index(n) = k |
---|
768 | n = n + 1 |
---|
769 | ENDIF |
---|
770 | ENDDO |
---|
771 | |
---|
772 | ! |
---|
773 | !-- Compute the w-levels. They are always staggered half-way between the |
---|
774 | !-- corresponding u-levels, except in case of dirichlet bc for u and v |
---|
775 | !-- at the ground. In this case the first u- and w-level are defined at |
---|
776 | !-- same height. The top w-level (nzt+1) is not used but set for |
---|
777 | !-- consistency, since w and all scalar variables are defined up tp nzt+1. |
---|
778 | zw(nzt+1) = dz(1) |
---|
779 | zw(nzt) = 0.0_wp |
---|
780 | DO k = 0, nzt |
---|
781 | zw(k) = ( zu(k) + zu(k+1) ) * 0.5_wp |
---|
782 | ENDDO |
---|
783 | |
---|
784 | ! |
---|
785 | !-- In case of dirichlet bc for u and v the first u- and w-level are defined |
---|
786 | !-- at same height. |
---|
787 | IF ( ibc_uv_b == 0 ) THEN |
---|
788 | zu(0) = zw(0) |
---|
789 | ENDIF |
---|
790 | |
---|
791 | ENDIF |
---|
792 | |
---|
793 | ! |
---|
794 | !-- Compute grid lengths. |
---|
795 | DO k = 1, nzt+1 |
---|
796 | dzu(k) = zu(k) - zu(k-1) |
---|
797 | ddzu(k) = 1.0_wp / dzu(k) |
---|
798 | dzw(k) = zw(k) - zw(k-1) |
---|
799 | ddzw(k) = 1.0_wp / dzw(k) |
---|
800 | ENDDO |
---|
801 | |
---|
802 | DO k = 1, nzt |
---|
803 | dd2zu(k) = 1.0_wp / ( dzu(k) + dzu(k+1) ) |
---|
804 | ENDDO |
---|
805 | |
---|
806 | ! |
---|
807 | !-- The FFT- SOR-pressure solvers assume grid spacings of a staggered grid |
---|
808 | !-- everywhere. For the actual grid, the grid spacing at the lowest level |
---|
809 | !-- is only dz/2, but should be dz. Therefore, an additional array |
---|
810 | !-- containing with appropriate grid information is created for these |
---|
811 | !-- solvers. |
---|
812 | IF ( psolver(1:9) /= 'multigrid' ) THEN |
---|
813 | ALLOCATE( ddzu_pres(1:nzt+1) ) |
---|
814 | ddzu_pres = ddzu |
---|
815 | ddzu_pres(1) = ddzu_pres(2) ! change for lowest level |
---|
816 | ENDIF |
---|
817 | |
---|
818 | ! |
---|
819 | !-- Compute the reciprocal values of the horizontal grid lengths. |
---|
820 | ddx = 1.0_wp / dx |
---|
821 | ddy = 1.0_wp / dy |
---|
822 | dx2 = dx * dx |
---|
823 | dy2 = dy * dy |
---|
824 | ddx2 = 1.0_wp / dx2 |
---|
825 | ddy2 = 1.0_wp / dy2 |
---|
826 | |
---|
827 | ! |
---|
828 | !-- Allocate 3D array to set topography |
---|
829 | ALLOCATE( topo(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
830 | topo = 0 |
---|
831 | ! |
---|
832 | !-- Initialize topography by generic topography or read from topography from file. |
---|
833 | CALL init_topo( topo ) |
---|
834 | ! |
---|
835 | !-- Set flags to mask topography on the grid. |
---|
836 | CALL set_topo_flags( topo ) |
---|
837 | ! |
---|
838 | !-- Calculate wall flag arrays for the multigrid method. |
---|
839 | !-- Please note, wall flags are only applied in the non-optimized version. |
---|
840 | IF ( psolver == 'multigrid_noopt' ) CALL poismg_noopt_init |
---|
841 | |
---|
842 | ! |
---|
843 | !-- Init flags for ws-scheme to degrade order of the numerics near walls, i.e. |
---|
844 | !-- to decrease the numerical stencil appropriately. |
---|
845 | IF ( momentum_advec == 'ws-scheme' .OR. scalar_advec == 'ws-scheme' ) & |
---|
846 | CALL ws_init_flags |
---|
847 | |
---|
848 | ! |
---|
849 | !-- Determine the maximum level of topography. It is used for |
---|
850 | !-- steering the degradation of order of the applied advection scheme, |
---|
851 | !-- as well in the lpm. |
---|
852 | k_top = 0 |
---|
853 | DO i = nxl, nxr |
---|
854 | DO j = nys, nyn |
---|
855 | DO k = nzb, nzt + 1 |
---|
856 | k_top = MAX( k_top, MERGE( k, 0, & |
---|
857 | .NOT. BTEST( topo(k,j,i), 0 ) ) ) |
---|
858 | ENDDO |
---|
859 | ENDDO |
---|
860 | ENDDO |
---|
861 | #if defined( __parallel ) |
---|
862 | CALL MPI_ALLREDUCE( k_top + 1, nzb_max, 1, MPI_INTEGER, & !is +1 really necessary here? |
---|
863 | MPI_MAX, comm2d, ierr ) |
---|
864 | #else |
---|
865 | nzb_max = k_top + 1 |
---|
866 | #endif |
---|
867 | ! |
---|
868 | !-- If topography extents up to the model top, limit nzb_max to nzt. |
---|
869 | nzb_max = MIN( nzb_max, nzt ) |
---|
870 | ! |
---|
871 | !-- Determine minimum index of topography. Usually, this will be nzb. In case |
---|
872 | !-- there is elevated topography, however, the lowest topography will be higher. |
---|
873 | !-- This index is e.g. used to calculate mean first-grid point atmosphere |
---|
874 | !-- temperature, surface pressure and density, etc. . |
---|
875 | topo_min_level = 0 |
---|
876 | #if defined( __parallel ) |
---|
877 | CALL MPI_ALLREDUCE( MINVAL( get_topography_top_index( 's' ) ), & |
---|
878 | topo_min_level, 1, MPI_INTEGER, MPI_MIN, comm2d, ierr ) |
---|
879 | #else |
---|
880 | topo_min_level = MINVAL( get_topography_top_index( 's' ) ) |
---|
881 | #endif |
---|
882 | ! |
---|
883 | !-- Initialize boundary conditions via surface type |
---|
884 | CALL init_bc |
---|
885 | |
---|
886 | ! |
---|
887 | !-- Allocate and set topography height arrays required for data output |
---|
888 | IF ( TRIM( topography ) /= 'flat' ) THEN |
---|
889 | ! |
---|
890 | !-- Allocate and set the arrays containing the topography height |
---|
891 | IF ( nxr == nx .AND. nyn /= ny ) THEN |
---|
892 | ALLOCATE( zu_s_inner(nxl:nxr+1,nys:nyn), & |
---|
893 | zw_w_inner(nxl:nxr+1,nys:nyn) ) |
---|
894 | ELSEIF ( nxr /= nx .AND. nyn == ny ) THEN |
---|
895 | ALLOCATE( zu_s_inner(nxl:nxr,nys:nyn+1), & |
---|
896 | zw_w_inner(nxl:nxr,nys:nyn+1) ) |
---|
897 | ELSEIF ( nxr == nx .AND. nyn == ny ) THEN |
---|
898 | ALLOCATE( zu_s_inner(nxl:nxr+1,nys:nyn+1), & |
---|
899 | zw_w_inner(nxl:nxr+1,nys:nyn+1) ) |
---|
900 | ELSE |
---|
901 | ALLOCATE( zu_s_inner(nxl:nxr,nys:nyn), & |
---|
902 | zw_w_inner(nxl:nxr,nys:nyn) ) |
---|
903 | ENDIF |
---|
904 | |
---|
905 | zu_s_inner = 0.0_wp |
---|
906 | zw_w_inner = 0.0_wp |
---|
907 | ! |
---|
908 | !-- Determine local topography height on scalar and w-grid. Note, setting |
---|
909 | !-- lateral boundary values is not necessary, realized via wall_flags_0 |
---|
910 | !-- array. Further, please note that loop bounds are different from |
---|
911 | !-- nxl to nxr and nys to nyn on south and right model boundary, hence, |
---|
912 | !-- use intrinsic lbound and ubound functions to infer array bounds. |
---|
913 | DO i = LBOUND(zu_s_inner, 1), UBOUND(zu_s_inner, 1) |
---|
914 | DO j = LBOUND(zu_s_inner, 2), UBOUND(zu_s_inner, 2) |
---|
915 | ! |
---|
916 | !-- Topography height on scalar grid. Therefore, determine index of |
---|
917 | !-- upward-facing surface element on scalar grid. |
---|
918 | zu_s_inner(i,j) = zu( get_topography_top_index_ji( j, i, 's' ) ) |
---|
919 | ! |
---|
920 | !-- Topography height on w grid. Therefore, determine index of |
---|
921 | !-- upward-facing surface element on w grid. |
---|
922 | zw_w_inner(i,j) = zw( get_topography_top_index_ji( j, i, 's' ) ) |
---|
923 | ENDDO |
---|
924 | ENDDO |
---|
925 | ENDIF |
---|
926 | |
---|
927 | ! |
---|
928 | !-- In the following, calculate 2D index arrays. Note, these will be removed |
---|
929 | !-- soon. |
---|
930 | !-- Allocate outer and inner index arrays for topography and set |
---|
931 | !-- defaults. |
---|
932 | ALLOCATE( nzb_s_inner(nysg:nyng,nxlg:nxrg), & |
---|
933 | nzb_s_outer(nysg:nyng,nxlg:nxrg), & |
---|
934 | nzb_u_inner(nysg:nyng,nxlg:nxrg), & |
---|
935 | nzb_u_outer(nysg:nyng,nxlg:nxrg), & |
---|
936 | nzb_v_inner(nysg:nyng,nxlg:nxrg), & |
---|
937 | nzb_v_outer(nysg:nyng,nxlg:nxrg), & |
---|
938 | nzb_w_inner(nysg:nyng,nxlg:nxrg), & |
---|
939 | nzb_w_outer(nysg:nyng,nxlg:nxrg), & |
---|
940 | nzb_diff_s_inner(nysg:nyng,nxlg:nxrg), & |
---|
941 | nzb_diff_s_outer(nysg:nyng,nxlg:nxrg), & |
---|
942 | nzb_local(nysg:nyng,nxlg:nxrg), & |
---|
943 | nzb_tmp(nysg:nyng,nxlg:nxrg) ) |
---|
944 | ! |
---|
945 | !-- Initialize 2D-index arrays. Note, these will be removed soon! |
---|
946 | nzb_local(nys:nyn,nxl:nxr) = get_topography_top_index( 's' ) |
---|
947 | CALL exchange_horiz_2d_int( nzb_local, nys, nyn, nxl, nxr, nbgp ) |
---|
948 | ! |
---|
949 | !-- Check topography for consistency with model domain. Therefore, use |
---|
950 | !-- maximum and minium topography-top indices. Note, minimum topography top |
---|
951 | !-- index is already calculated. |
---|
952 | IF ( TRIM( topography ) /= 'flat' ) THEN |
---|
953 | #if defined( __parallel ) |
---|
954 | CALL MPI_ALLREDUCE( MAXVAL( get_topography_top_index( 's' ) ), & |
---|
955 | nzb_local_max, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr ) |
---|
956 | #else |
---|
957 | nzb_local_max = MAXVAL( get_topography_top_index( 's' ) ) |
---|
958 | #endif |
---|
959 | nzb_local_min = topo_min_level |
---|
960 | ! |
---|
961 | !-- Consistency checks |
---|
962 | IF ( nzb_local_min < 0 .OR. nzb_local_max > nz + 1 ) THEN |
---|
963 | WRITE( message_string, * ) 'nzb_local values are outside the', & |
---|
964 | ' model domain', & |
---|
965 | '&MINVAL( nzb_local ) = ', nzb_local_min, & |
---|
966 | '&MAXVAL( nzb_local ) = ', nzb_local_max |
---|
967 | CALL message( 'init_grid', 'PA0210', 1, 2, 0, 6, 0 ) |
---|
968 | ENDIF |
---|
969 | ENDIF |
---|
970 | |
---|
971 | nzb_s_inner = nzb; nzb_s_outer = nzb |
---|
972 | nzb_u_inner = nzb; nzb_u_outer = nzb |
---|
973 | nzb_v_inner = nzb; nzb_v_outer = nzb |
---|
974 | nzb_w_inner = nzb; nzb_w_outer = nzb |
---|
975 | |
---|
976 | ! |
---|
977 | !-- Define vertical gridpoint from (or to) which on the usual finite difference |
---|
978 | !-- form (which does not use surface fluxes) is applied |
---|
979 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
980 | nzb_diff = nzb + 2 |
---|
981 | ELSE |
---|
982 | nzb_diff = nzb + 1 |
---|
983 | ENDIF |
---|
984 | |
---|
985 | nzb_diff_s_inner = nzb_diff; nzb_diff_s_outer = nzb_diff |
---|
986 | ! |
---|
987 | !-- Set Neumann conditions for topography. Will be removed soon. |
---|
988 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
989 | IF ( nys == 0 ) THEN |
---|
990 | DO i = 1, nbgp |
---|
991 | nzb_local(nys-i,:) = nzb_local(nys,:) |
---|
992 | ENDDO |
---|
993 | ELSEIF ( nyn == ny ) THEN |
---|
994 | DO i = 1, nbgp |
---|
995 | nzb_local(ny+i,:) = nzb_local(ny,:) |
---|
996 | ENDDO |
---|
997 | ENDIF |
---|
998 | ENDIF |
---|
999 | |
---|
1000 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
1001 | IF ( nxl == 0 ) THEN |
---|
1002 | DO i = 1, nbgp |
---|
1003 | nzb_local(:,nxl-i) = nzb_local(:,nxl) |
---|
1004 | ENDDO |
---|
1005 | ELSEIF ( nxr == nx ) THEN |
---|
1006 | DO i = 1, nbgp |
---|
1007 | nzb_local(:,nx+i) = nzb_local(:,nx) |
---|
1008 | ENDDO |
---|
1009 | ENDIF |
---|
1010 | ENDIF |
---|
1011 | ! |
---|
1012 | !-- Initialization of 2D index arrays, will be removed soon! |
---|
1013 | !-- Initialize nzb_s_inner and nzb_w_inner |
---|
1014 | nzb_s_inner = nzb_local |
---|
1015 | nzb_w_inner = nzb_local |
---|
1016 | |
---|
1017 | ! |
---|
1018 | !-- Initialize remaining index arrays: |
---|
1019 | !-- first pre-initialize them with nzb_s_inner... |
---|
1020 | nzb_u_inner = nzb_s_inner |
---|
1021 | nzb_u_outer = nzb_s_inner |
---|
1022 | nzb_v_inner = nzb_s_inner |
---|
1023 | nzb_v_outer = nzb_s_inner |
---|
1024 | nzb_w_outer = nzb_s_inner |
---|
1025 | nzb_s_outer = nzb_s_inner |
---|
1026 | |
---|
1027 | ! |
---|
1028 | !-- nzb_s_outer: |
---|
1029 | !-- extend nzb_local east-/westwards first, then north-/southwards |
---|
1030 | nzb_tmp = nzb_local |
---|
1031 | DO j = nys, nyn |
---|
1032 | DO i = nxl, nxr |
---|
1033 | nzb_tmp(j,i) = MAX( nzb_local(j,i-1), nzb_local(j,i), & |
---|
1034 | nzb_local(j,i+1) ) |
---|
1035 | ENDDO |
---|
1036 | ENDDO |
---|
1037 | |
---|
1038 | CALL exchange_horiz_2d_int( nzb_tmp, nys, nyn, nxl, nxr, nbgp ) |
---|
1039 | |
---|
1040 | DO i = nxl, nxr |
---|
1041 | DO j = nys, nyn |
---|
1042 | nzb_s_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i), & |
---|
1043 | nzb_tmp(j+1,i) ) |
---|
1044 | ENDDO |
---|
1045 | ! |
---|
1046 | !-- non-cyclic boundary conditions (overwritten by call of |
---|
1047 | !-- exchange_horiz_2d_int below in case of cyclic boundary conditions) |
---|
1048 | IF ( nys == 0 ) THEN |
---|
1049 | j = -1 |
---|
1050 | nzb_s_outer(j,i) = MAX( nzb_tmp(j+1,i), nzb_tmp(j,i) ) |
---|
1051 | ENDIF |
---|
1052 | IF ( nyn == ny ) THEN |
---|
1053 | j = ny + 1 |
---|
1054 | nzb_s_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i) ) |
---|
1055 | ENDIF |
---|
1056 | ENDDO |
---|
1057 | ! |
---|
1058 | !-- nzb_w_outer: |
---|
1059 | !-- identical to nzb_s_outer |
---|
1060 | nzb_w_outer = nzb_s_outer |
---|
1061 | ! |
---|
1062 | !-- nzb_u_inner: |
---|
1063 | !-- extend nzb_local rightwards only |
---|
1064 | nzb_tmp = nzb_local |
---|
1065 | DO j = nys, nyn |
---|
1066 | DO i = nxl, nxr |
---|
1067 | nzb_tmp(j,i) = MAX( nzb_local(j,i-1), nzb_local(j,i) ) |
---|
1068 | ENDDO |
---|
1069 | ENDDO |
---|
1070 | |
---|
1071 | CALL exchange_horiz_2d_int( nzb_tmp, nys, nyn, nxl, nxr, nbgp ) |
---|
1072 | |
---|
1073 | nzb_u_inner = nzb_tmp |
---|
1074 | ! |
---|
1075 | !-- nzb_u_outer: |
---|
1076 | !-- extend current nzb_tmp (nzb_u_inner) north-/southwards |
---|
1077 | DO i = nxl, nxr |
---|
1078 | DO j = nys, nyn |
---|
1079 | nzb_u_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i), & |
---|
1080 | nzb_tmp(j+1,i) ) |
---|
1081 | ENDDO |
---|
1082 | ! |
---|
1083 | !-- non-cyclic boundary conditions (overwritten by call of |
---|
1084 | !-- exchange_horiz_2d_int below in case of cyclic boundary conditions) |
---|
1085 | IF ( nys == 0 ) THEN |
---|
1086 | j = -1 |
---|
1087 | nzb_u_outer(j,i) = MAX( nzb_tmp(j+1,i), nzb_tmp(j,i) ) |
---|
1088 | ENDIF |
---|
1089 | IF ( nyn == ny ) THEN |
---|
1090 | j = ny + 1 |
---|
1091 | nzb_u_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i) ) |
---|
1092 | ENDIF |
---|
1093 | ENDDO |
---|
1094 | |
---|
1095 | ! |
---|
1096 | !-- nzb_v_inner: |
---|
1097 | !-- extend nzb_local northwards only |
---|
1098 | nzb_tmp = nzb_local |
---|
1099 | DO i = nxl, nxr |
---|
1100 | DO j = nys, nyn |
---|
1101 | nzb_tmp(j,i) = MAX( nzb_local(j-1,i), nzb_local(j,i) ) |
---|
1102 | ENDDO |
---|
1103 | ENDDO |
---|
1104 | |
---|
1105 | CALL exchange_horiz_2d_int( nzb_tmp, nys, nyn, nxl, nxr, nbgp ) |
---|
1106 | nzb_v_inner = nzb_tmp |
---|
1107 | |
---|
1108 | ! |
---|
1109 | !-- nzb_v_outer: |
---|
1110 | !-- extend current nzb_tmp (nzb_v_inner) right-/leftwards |
---|
1111 | DO j = nys, nyn |
---|
1112 | DO i = nxl, nxr |
---|
1113 | nzb_v_outer(j,i) = MAX( nzb_tmp(j,i-1), nzb_tmp(j,i), & |
---|
1114 | nzb_tmp(j,i+1) ) |
---|
1115 | ENDDO |
---|
1116 | ! |
---|
1117 | !-- non-cyclic boundary conditions (overwritten by call of |
---|
1118 | !-- exchange_horiz_2d_int below in case of cyclic boundary conditions) |
---|
1119 | IF ( nxl == 0 ) THEN |
---|
1120 | i = -1 |
---|
1121 | nzb_v_outer(j,i) = MAX( nzb_tmp(j,i+1), nzb_tmp(j,i) ) |
---|
1122 | ENDIF |
---|
1123 | IF ( nxr == nx ) THEN |
---|
1124 | i = nx + 1 |
---|
1125 | nzb_v_outer(j,i) = MAX( nzb_tmp(j,i-1), nzb_tmp(j,i) ) |
---|
1126 | ENDIF |
---|
1127 | ENDDO |
---|
1128 | |
---|
1129 | ! |
---|
1130 | !-- Exchange of lateral boundary values (parallel computers) and cyclic |
---|
1131 | !-- boundary conditions, if applicable. |
---|
1132 | !-- Since nzb_s_inner and nzb_w_inner are derived directly from nzb_local |
---|
1133 | !-- they do not require exchange and are not included here. |
---|
1134 | CALL exchange_horiz_2d_int( nzb_u_inner, nys, nyn, nxl, nxr, nbgp ) |
---|
1135 | CALL exchange_horiz_2d_int( nzb_u_outer, nys, nyn, nxl, nxr, nbgp ) |
---|
1136 | CALL exchange_horiz_2d_int( nzb_v_inner, nys, nyn, nxl, nxr, nbgp ) |
---|
1137 | CALL exchange_horiz_2d_int( nzb_v_outer, nys, nyn, nxl, nxr, nbgp ) |
---|
1138 | CALL exchange_horiz_2d_int( nzb_w_outer, nys, nyn, nxl, nxr, nbgp ) |
---|
1139 | CALL exchange_horiz_2d_int( nzb_s_outer, nys, nyn, nxl, nxr, nbgp ) |
---|
1140 | |
---|
1141 | ! |
---|
1142 | !-- Set the individual index arrays which define the k index from which on |
---|
1143 | !-- the usual finite difference form (which does not use surface fluxes) is |
---|
1144 | !-- applied |
---|
1145 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
1146 | nzb_diff_s_inner = nzb_s_inner + 2 |
---|
1147 | nzb_diff_s_outer = nzb_s_outer + 2 |
---|
1148 | ELSE |
---|
1149 | nzb_diff_s_inner = nzb_s_inner + 1 |
---|
1150 | nzb_diff_s_outer = nzb_s_outer + 1 |
---|
1151 | ENDIF |
---|
1152 | ! |
---|
1153 | !-- Vertical nesting: communicate vertical grid level arrays between fine and |
---|
1154 | !-- coarse grid |
---|
1155 | IF ( vnested ) CALL vnest_init_grid |
---|
1156 | |
---|
1157 | END SUBROUTINE init_grid |
---|
1158 | |
---|
1159 | |
---|
1160 | ! Description: |
---|
1161 | ! -----------------------------------------------------------------------------! |
---|
1162 | !> Calculation of the stretching factor through an iterative method. Ideas were |
---|
1163 | !> taken from the paper "Regional stretched grid generation and its application |
---|
1164 | !> to the NCAR RegCM (1999)". Normally, no analytic solution exists because the |
---|
1165 | !> system of equations has two variables (r,l) but four requirements |
---|
1166 | !> (l=integer, r=[0,88;1,2], Eq(6), Eq(5) starting from index j=1) which |
---|
1167 | !> results into an overdetermined system. |
---|
1168 | !------------------------------------------------------------------------------! |
---|
1169 | SUBROUTINE calculate_stretching_factor( number_end ) |
---|
1170 | |
---|
1171 | USE control_parameters, & |
---|
1172 | ONLY: dz, dz_stretch_factor_array, & |
---|
1173 | dz_stretch_level_end, dz_stretch_level_start, message_string |
---|
1174 | |
---|
1175 | USE kinds |
---|
1176 | |
---|
1177 | IMPLICIT NONE |
---|
1178 | |
---|
1179 | INTEGER(iwp) :: iterations !< number of iterations until stretch_factor_lower/upper_limit is reached |
---|
1180 | INTEGER(iwp) :: l_rounded !< after l_rounded grid levels dz(n) is strechted to dz(n+1) with stretch_factor_2 |
---|
1181 | INTEGER(iwp) :: n !< loop variable for stretching |
---|
1182 | |
---|
1183 | INTEGER(iwp), INTENT(IN) :: number_end !< number of user-specified end levels for stretching |
---|
1184 | |
---|
1185 | REAL(wp) :: delta_l !< absolute difference between l and l_rounded |
---|
1186 | REAL(wp) :: delta_stretch_factor !< absolute difference between stretch_factor_1 and stretch_factor_2 |
---|
1187 | REAL(wp) :: delta_total_new !< sum of delta_l and delta_stretch_factor for the next iteration (should be as small as possible) |
---|
1188 | REAL(wp) :: delta_total_old !< sum of delta_l and delta_stretch_factor for the last iteration |
---|
1189 | REAL(wp) :: distance !< distance between dz_stretch_level_start and dz_stretch_level_end (stretching region) |
---|
1190 | REAL(wp) :: l !< value that fulfil Eq. (5) in the paper mentioned above together with stretch_factor_1 exactly |
---|
1191 | REAL(wp) :: numerator !< numerator of the quotient |
---|
1192 | REAL(wp) :: stretch_factor_1 !< stretching factor that fulfil Eq. (5) togehter with l exactly |
---|
1193 | REAL(wp) :: stretch_factor_2 !< stretching factor that fulfil Eq. (6) togehter with l_rounded exactly |
---|
1194 | |
---|
1195 | REAL(wp) :: dz_stretch_factor_array_2(9) = 1.08_wp !< Array that contains all stretch_factor_2 that belongs to stretch_factor_1 |
---|
1196 | |
---|
1197 | REAL(wp), PARAMETER :: stretch_factor_interval = 1.0E-06 !< interval for sampling possible stretching factors |
---|
1198 | REAL(wp), PARAMETER :: stretch_factor_lower_limit = 0.88 !< lowest possible stretching factor |
---|
1199 | REAL(wp), PARAMETER :: stretch_factor_upper_limit = 1.12 !< highest possible stretching factor |
---|
1200 | |
---|
1201 | |
---|
1202 | l = 0 |
---|
1203 | DO n = 1, number_end |
---|
1204 | |
---|
1205 | iterations = 1 |
---|
1206 | stretch_factor_1 = 1.0 |
---|
1207 | stretch_factor_2 = 1.0 |
---|
1208 | delta_total_old = 1.0 |
---|
1209 | |
---|
1210 | IF ( dz(n) > dz(n+1) ) THEN |
---|
1211 | DO WHILE ( stretch_factor_1 >= stretch_factor_lower_limit ) |
---|
1212 | |
---|
1213 | stretch_factor_1 = 1.0 - iterations * stretch_factor_interval |
---|
1214 | distance = ABS( dz_stretch_level_end(n) - & |
---|
1215 | dz_stretch_level_start(n) ) |
---|
1216 | numerator = distance*stretch_factor_1/dz(n) + & |
---|
1217 | stretch_factor_1 - distance/dz(n) |
---|
1218 | |
---|
1219 | IF ( numerator > 0.0 ) THEN |
---|
1220 | l = LOG( numerator ) / LOG( stretch_factor_1 ) - 1.0 |
---|
1221 | l_rounded = NINT( l ) |
---|
1222 | delta_l = ABS( l_rounded - l ) / l |
---|
1223 | ENDIF |
---|
1224 | |
---|
1225 | stretch_factor_2 = EXP( LOG( dz(n+1)/dz(n) ) / (l_rounded) ) |
---|
1226 | |
---|
1227 | delta_stretch_factor = ABS( stretch_factor_1 - & |
---|
1228 | stretch_factor_2 ) / & |
---|
1229 | stretch_factor_2 |
---|
1230 | |
---|
1231 | delta_total_new = delta_l + delta_stretch_factor |
---|
1232 | |
---|
1233 | ! |
---|
1234 | !-- stretch_factor_1 is taken to guarantee that the stretching |
---|
1235 | !-- procedure ends as close as possible to dz_stretch_level_end. |
---|
1236 | !-- stretch_factor_2 would guarantee that the stretched dz(n) is |
---|
1237 | !-- equal to dz(n+1) after l_rounded grid levels. |
---|
1238 | IF (delta_total_new < delta_total_old) THEN |
---|
1239 | dz_stretch_factor_array(n) = stretch_factor_1 |
---|
1240 | dz_stretch_factor_array_2(n) = stretch_factor_2 |
---|
1241 | delta_total_old = delta_total_new |
---|
1242 | ENDIF |
---|
1243 | |
---|
1244 | iterations = iterations + 1 |
---|
1245 | |
---|
1246 | ENDDO |
---|
1247 | |
---|
1248 | ELSEIF ( dz(n) < dz(n+1) ) THEN |
---|
1249 | DO WHILE ( stretch_factor_1 <= stretch_factor_upper_limit ) |
---|
1250 | |
---|
1251 | stretch_factor_1 = 1.0 + iterations * stretch_factor_interval |
---|
1252 | distance = ABS( dz_stretch_level_end(n) - & |
---|
1253 | dz_stretch_level_start(n) ) |
---|
1254 | numerator = distance*stretch_factor_1/dz(n) + & |
---|
1255 | stretch_factor_1 - distance/dz(n) |
---|
1256 | |
---|
1257 | l = LOG( numerator ) / LOG( stretch_factor_1 ) - 1.0 |
---|
1258 | l_rounded = NINT( l ) |
---|
1259 | delta_l = ABS( l_rounded - l ) / l |
---|
1260 | |
---|
1261 | stretch_factor_2 = EXP( LOG( dz(n+1)/dz(n) ) / (l_rounded) ) |
---|
1262 | |
---|
1263 | delta_stretch_factor = ABS( stretch_factor_1 - & |
---|
1264 | stretch_factor_2 ) / & |
---|
1265 | stretch_factor_2 |
---|
1266 | |
---|
1267 | delta_total_new = delta_l + delta_stretch_factor |
---|
1268 | |
---|
1269 | ! |
---|
1270 | !-- stretch_factor_1 is taken to guarantee that the stretching |
---|
1271 | !-- procedure ends as close as possible to dz_stretch_level_end. |
---|
1272 | !-- stretch_factor_2 would guarantee that the stretched dz(n) is |
---|
1273 | !-- equal to dz(n+1) after l_rounded grid levels. |
---|
1274 | IF (delta_total_new < delta_total_old) THEN |
---|
1275 | dz_stretch_factor_array(n) = stretch_factor_1 |
---|
1276 | dz_stretch_factor_array_2(n) = stretch_factor_2 |
---|
1277 | delta_total_old = delta_total_new |
---|
1278 | ENDIF |
---|
1279 | |
---|
1280 | iterations = iterations + 1 |
---|
1281 | ENDDO |
---|
1282 | |
---|
1283 | ELSE |
---|
1284 | message_string= 'Two adjacent values of dz must be different' |
---|
1285 | CALL message( 'init_grid', 'PA0228', 1, 2, 0, 6, 0 ) |
---|
1286 | |
---|
1287 | ENDIF |
---|
1288 | |
---|
1289 | ! |
---|
1290 | !-- Check if also the second stretching factor fits into the allowed |
---|
1291 | !-- interval. If not, print a warning for the user. |
---|
1292 | IF ( dz_stretch_factor_array_2(n) < stretch_factor_lower_limit .OR. & |
---|
1293 | dz_stretch_factor_array_2(n) > stretch_factor_upper_limit ) THEN |
---|
1294 | WRITE( message_string, * ) 'stretch_factor_2 = ', & |
---|
1295 | dz_stretch_factor_array_2(n), ' which is',& |
---|
1296 | ' responsible for exactly reaching& dz =',& |
---|
1297 | dz(n+1), 'after a specific amount of', & |
---|
1298 | ' grid levels& exceeds the upper', & |
---|
1299 | ' limit =', stretch_factor_upper_limit, & |
---|
1300 | ' &or lower limit = ', & |
---|
1301 | stretch_factor_lower_limit |
---|
1302 | CALL message( 'init_grid', 'PA0499', 0, 1, 0, 6, 0 ) |
---|
1303 | |
---|
1304 | ENDIF |
---|
1305 | ENDDO |
---|
1306 | |
---|
1307 | END SUBROUTINE calculate_stretching_factor |
---|
1308 | |
---|
1309 | |
---|
1310 | ! Description: |
---|
1311 | ! -----------------------------------------------------------------------------! |
---|
1312 | !> Set temporary topography flags and reference buildings on top of underlying |
---|
1313 | !> orography. |
---|
1314 | !------------------------------------------------------------------------------! |
---|
1315 | SUBROUTINE process_topography( topo_3d ) |
---|
1316 | |
---|
1317 | USE arrays_3d, & |
---|
1318 | ONLY: zu, zw |
---|
1319 | |
---|
1320 | USE control_parameters, & |
---|
1321 | ONLY: bc_lr_cyc, bc_ns_cyc, message_string, ocean_mode |
---|
1322 | |
---|
1323 | USE indices, & |
---|
1324 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nzb, & |
---|
1325 | nzt |
---|
1326 | |
---|
1327 | USE netcdf_data_input_mod, & |
---|
1328 | ONLY: buildings_f, building_id_f, building_type_f, input_pids_static, & |
---|
1329 | terrain_height_f |
---|
1330 | |
---|
1331 | USE kinds |
---|
1332 | |
---|
1333 | USE pegrid |
---|
1334 | |
---|
1335 | IMPLICIT NONE |
---|
1336 | |
---|
1337 | INTEGER(iwp) :: i !< running index along x-direction |
---|
1338 | INTEGER(iwp) :: j !< running index along y-direction |
---|
1339 | INTEGER(iwp) :: k !< running index along z-direction with respect to numeric grid |
---|
1340 | INTEGER(iwp) :: k2 !< running index along z-direction with respect to netcdf grid |
---|
1341 | INTEGER(iwp) :: nr !< index variable indication maximum terrain height for respective building ID |
---|
1342 | INTEGER(iwp) :: num_build !< counter for number of buildings |
---|
1343 | INTEGER(iwp) :: topo_top_index !< orography top index, used to map 3D buildings onto terrain |
---|
1344 | |
---|
1345 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: displace_dum !< displacements of start addresses, used for MPI_ALLGATHERV |
---|
1346 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids !< building IDs on entire model domain |
---|
1347 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_final !< building IDs on entire model domain, multiple occurences are sorted out |
---|
1348 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_final_tmp !< temporary array used for resizing |
---|
1349 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_l !< building IDs on local subdomain |
---|
1350 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_l_tmp !< temporary array used to resize array of building IDs |
---|
1351 | |
---|
1352 | INTEGER(iwp), DIMENSION(0:numprocs-1) :: num_buildings !< number of buildings with different ID on entire model domain |
---|
1353 | INTEGER(iwp), DIMENSION(0:numprocs-1) :: num_buildings_l !< number of buildings with different ID on local subdomain |
---|
1354 | |
---|
1355 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo_3d !< input array for 3D topography and dummy array for setting "outer"-flags |
---|
1356 | |
---|
1357 | REAL(wp) :: ocean_offset !< offset to consider inverse vertical coordinate at topography definition |
---|
1358 | REAL(wp) :: oro_min = 0.0_wp !< minimum terrain height in entire model domain, used to reference terrain to zero |
---|
1359 | REAL(wp), DIMENSION(:), ALLOCATABLE :: oro_max !< maximum terrain height occupied by an building with certain id |
---|
1360 | REAL(wp), DIMENSION(:), ALLOCATABLE :: oro_max_l !< maximum terrain height occupied by an building with certain id, on local subdomain |
---|
1361 | |
---|
1362 | |
---|
1363 | ! |
---|
1364 | !-- Reference lowest terrain height to zero. In case the minimum terrain height |
---|
1365 | !-- is non-zero, all grid points of the lower vertical grid levels might be |
---|
1366 | !-- entirely below the surface, meaning a waste of computational resources. |
---|
1367 | !-- In order to avoid this, remove the lowest terrain height. Please note, |
---|
1368 | !-- in case of a nested run, the global minimum from all parent and childs |
---|
1369 | !-- need to be remove to avoid steep edges at the child-domain boundaries. |
---|
1370 | IF ( input_pids_static ) THEN |
---|
1371 | #if defined( __parallel ) |
---|
1372 | CALL MPI_ALLREDUCE( MINVAL( terrain_height_f%var ), oro_min, 1, & |
---|
1373 | MPI_REAL, MPI_MIN, MPI_COMM_WORLD, ierr ) |
---|
1374 | #else |
---|
1375 | oro_min = MINVAL( terrain_height_f%var ) |
---|
1376 | #endif |
---|
1377 | |
---|
1378 | terrain_height_f%var = terrain_height_f%var - oro_min |
---|
1379 | ! |
---|
1380 | !-- Give an informative message that terrain height is referenced to zero |
---|
1381 | IF ( oro_min > 0.0_wp ) THEN |
---|
1382 | WRITE( message_string, * ) 'Terrain height was internally shifted '//& |
---|
1383 | 'downwards by ', oro_min, 'meter(s) to save ' // & |
---|
1384 | 'computational resources.' |
---|
1385 | CALL message( 'init_grid', 'PA0505', 0, 0, 0, 6, 0 ) |
---|
1386 | ENDIF |
---|
1387 | ENDIF |
---|
1388 | |
---|
1389 | ! |
---|
1390 | !-- In the following, buildings and orography are further preprocessed |
---|
1391 | !-- before they are mapped on the LES grid. |
---|
1392 | !-- Buildings are mapped on top of the orography by maintaining the roof |
---|
1393 | !-- shape of the building. This can be achieved by referencing building on |
---|
1394 | !-- top of the maximum terrain height within the area occupied by the |
---|
1395 | !-- respective building. As buildings and terrain height are defined PE-wise, |
---|
1396 | !-- parallelization of this referencing is required (a building can be |
---|
1397 | !-- distributed between different PEs). |
---|
1398 | !-- In a first step, determine the number of buildings with different |
---|
1399 | !-- building id on each PE. In a next step, all building ids are gathered |
---|
1400 | !-- into one array which is present to all PEs. For each building ID, |
---|
1401 | !-- the maximum terrain height occupied by the respective building is |
---|
1402 | !-- computed and distributed to each PE. |
---|
1403 | !-- Finally, for each building id and its respective reference orography, |
---|
1404 | !-- builidings are mapped on top. |
---|
1405 | !-- |
---|
1406 | !-- First, pre-set topography flags, bit 1 indicates orography, bit 2 |
---|
1407 | !-- buildings |
---|
1408 | !-- classify the respective surfaces. |
---|
1409 | topo_3d = IBSET( topo_3d, 0 ) |
---|
1410 | topo_3d(nzb,:,:) = IBCLR( topo_3d(nzb,:,:), 0 ) |
---|
1411 | ! |
---|
1412 | !-- In order to map topography on PALM grid also in case of ocean simulations, |
---|
1413 | !-- pre-calculate an offset value. |
---|
1414 | ocean_offset = MERGE( zw(0), 0.0_wp, ocean_mode ) |
---|
1415 | ! |
---|
1416 | !-- Reference buildings on top of orography. This is not necessary |
---|
1417 | !-- if topography is read from ASCII file as no distinction between buildings |
---|
1418 | !-- and terrain height can be made. Moreover, this is also not necessary if |
---|
1419 | !-- urban-surface and land-surface model are used at the same time. |
---|
1420 | IF ( input_pids_static ) THEN |
---|
1421 | |
---|
1422 | IF ( buildings_f%from_file ) THEN |
---|
1423 | num_buildings_l = 0 |
---|
1424 | num_buildings = 0 |
---|
1425 | ! |
---|
1426 | !-- Allocate at least one element for building ids, |
---|
1427 | ALLOCATE( build_ids_l(1) ) |
---|
1428 | DO i = nxl, nxr |
---|
1429 | DO j = nys, nyn |
---|
1430 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
1431 | IF ( num_buildings_l(myid) > 0 ) THEN |
---|
1432 | IF ( ANY( building_id_f%var(j,i) .EQ. build_ids_l ) ) & |
---|
1433 | THEN |
---|
1434 | CYCLE |
---|
1435 | ELSE |
---|
1436 | num_buildings_l(myid) = num_buildings_l(myid) + 1 |
---|
1437 | ! |
---|
1438 | !-- Resize array with different local building ids |
---|
1439 | ALLOCATE( build_ids_l_tmp(1:SIZE(build_ids_l)) ) |
---|
1440 | build_ids_l_tmp = build_ids_l |
---|
1441 | DEALLOCATE( build_ids_l ) |
---|
1442 | ALLOCATE( build_ids_l(1:num_buildings_l(myid)) ) |
---|
1443 | build_ids_l(1:num_buildings_l(myid)-1) = & |
---|
1444 | build_ids_l_tmp(1:num_buildings_l(myid)-1) |
---|
1445 | build_ids_l(num_buildings_l(myid)) = building_id_f%var(j,i) |
---|
1446 | DEALLOCATE( build_ids_l_tmp ) |
---|
1447 | ENDIF |
---|
1448 | ! |
---|
1449 | !-- First occuring building id on PE |
---|
1450 | ELSE |
---|
1451 | num_buildings_l(myid) = num_buildings_l(myid) + 1 |
---|
1452 | build_ids_l(1) = building_id_f%var(j,i) |
---|
1453 | ENDIF |
---|
1454 | ENDIF |
---|
1455 | ENDDO |
---|
1456 | ENDDO |
---|
1457 | ! |
---|
1458 | !-- Determine number of different building ids for the entire domain |
---|
1459 | #if defined( __parallel ) |
---|
1460 | CALL MPI_ALLREDUCE( num_buildings_l, num_buildings, numprocs, & |
---|
1461 | MPI_INTEGER, MPI_SUM, comm2d, ierr ) |
---|
1462 | #else |
---|
1463 | num_buildings = num_buildings_l |
---|
1464 | #endif |
---|
1465 | ! |
---|
1466 | !-- Gather all buildings ids on each PEs. |
---|
1467 | !-- First, allocate array encompassing all building ids in model domain. |
---|
1468 | ALLOCATE( build_ids(1:SUM(num_buildings)) ) |
---|
1469 | #if defined( __parallel ) |
---|
1470 | ! |
---|
1471 | !-- Allocate array for displacements. |
---|
1472 | !-- As each PE may has a different number of buildings, so that |
---|
1473 | !-- the block sizes send by each PE may not be equal. Hence, |
---|
1474 | !-- information about the respective displacement is required, indicating |
---|
1475 | !-- the respective adress where each MPI-task writes into the receive |
---|
1476 | !-- buffer array |
---|
1477 | ALLOCATE( displace_dum(0:numprocs-1) ) |
---|
1478 | displace_dum(0) = 0 |
---|
1479 | DO i = 1, numprocs-1 |
---|
1480 | displace_dum(i) = displace_dum(i-1) + num_buildings(i-1) |
---|
1481 | ENDDO |
---|
1482 | |
---|
1483 | CALL MPI_ALLGATHERV( build_ids_l(1:num_buildings_l(myid)), & |
---|
1484 | num_buildings(myid), & |
---|
1485 | MPI_INTEGER, & |
---|
1486 | build_ids, & |
---|
1487 | num_buildings, & |
---|
1488 | displace_dum, & |
---|
1489 | MPI_INTEGER, & |
---|
1490 | comm2d, ierr ) |
---|
1491 | |
---|
1492 | DEALLOCATE( displace_dum ) |
---|
1493 | |
---|
1494 | #else |
---|
1495 | build_ids = build_ids_l |
---|
1496 | #endif |
---|
1497 | |
---|
1498 | ! |
---|
1499 | !-- Note, in parallel mode building ids can occure mutliple times, as |
---|
1500 | !-- each PE has send its own ids. Therefore, sort out building ids which |
---|
1501 | !-- appear more than one time. |
---|
1502 | num_build = 0 |
---|
1503 | DO nr = 1, SIZE(build_ids) |
---|
1504 | |
---|
1505 | IF ( ALLOCATED(build_ids_final) ) THEN |
---|
1506 | IF ( ANY( build_ids(nr) .EQ. build_ids_final ) ) THEN |
---|
1507 | CYCLE |
---|
1508 | ELSE |
---|
1509 | num_build = num_build + 1 |
---|
1510 | ! |
---|
1511 | !-- Resize |
---|
1512 | ALLOCATE( build_ids_final_tmp(1:num_build) ) |
---|
1513 | build_ids_final_tmp(1:num_build-1) = build_ids_final(1:num_build-1) |
---|
1514 | DEALLOCATE( build_ids_final ) |
---|
1515 | ALLOCATE( build_ids_final(1:num_build) ) |
---|
1516 | build_ids_final(1:num_build-1) = build_ids_final_tmp(1:num_build-1) |
---|
1517 | build_ids_final(num_build) = build_ids(nr) |
---|
1518 | DEALLOCATE( build_ids_final_tmp ) |
---|
1519 | ENDIF |
---|
1520 | ELSE |
---|
1521 | num_build = num_build + 1 |
---|
1522 | ALLOCATE( build_ids_final(1:num_build) ) |
---|
1523 | build_ids_final(num_build) = build_ids(nr) |
---|
1524 | ENDIF |
---|
1525 | ENDDO |
---|
1526 | |
---|
1527 | ! |
---|
1528 | !-- Determine maximumum terrain height occupied by the respective |
---|
1529 | !-- building and temporalily store on oro_max |
---|
1530 | ALLOCATE( oro_max_l(1:SIZE(build_ids_final)) ) |
---|
1531 | ALLOCATE( oro_max(1:SIZE(build_ids_final)) ) |
---|
1532 | oro_max_l = 0.0_wp |
---|
1533 | |
---|
1534 | DO nr = 1, SIZE(build_ids_final) |
---|
1535 | oro_max_l(nr) = MAXVAL( & |
---|
1536 | MERGE( terrain_height_f%var, 0.0_wp, & |
---|
1537 | building_id_f%var(nys:nyn,nxl:nxr) .EQ. & |
---|
1538 | build_ids_final(nr) ) ) |
---|
1539 | ENDDO |
---|
1540 | |
---|
1541 | #if defined( __parallel ) |
---|
1542 | IF ( SIZE(build_ids_final) >= 1 ) THEN |
---|
1543 | CALL MPI_ALLREDUCE( oro_max_l, oro_max, SIZE( oro_max ), MPI_REAL, & |
---|
1544 | MPI_MAX, comm2d, ierr ) |
---|
1545 | ENDIF |
---|
1546 | #else |
---|
1547 | oro_max = oro_max_l |
---|
1548 | #endif |
---|
1549 | ! |
---|
1550 | !-- Finally, determine discrete grid height of maximum orography occupied |
---|
1551 | !-- by a building. Use all-or-nothing approach, i.e. a grid box is either |
---|
1552 | oro_max_l = 0.0 |
---|
1553 | DO nr = 1, SIZE(build_ids_final) |
---|
1554 | DO k = nzb, nzt |
---|
1555 | IF ( zu(k) - ocean_offset <= oro_max(nr) ) & |
---|
1556 | oro_max_l(nr) = zw(k) - ocean_offset |
---|
1557 | ENDDO |
---|
1558 | oro_max(nr) = oro_max_l(nr) |
---|
1559 | ENDDO |
---|
1560 | ENDIF |
---|
1561 | ! |
---|
1562 | !-- Map orography as well as buildings onto grid. |
---|
1563 | DO i = nxl, nxr |
---|
1564 | DO j = nys, nyn |
---|
1565 | topo_top_index = 0 |
---|
1566 | ! |
---|
1567 | !-- Obtain index in global building_id array |
---|
1568 | IF ( buildings_f%from_file ) THEN |
---|
1569 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
1570 | ! |
---|
1571 | !-- Determine index where maximum terrain height occupied by |
---|
1572 | !-- the respective building height is stored. |
---|
1573 | nr = MINLOC( ABS( build_ids_final - & |
---|
1574 | building_id_f%var(j,i) ), DIM = 1 ) |
---|
1575 | ENDIF |
---|
1576 | ENDIF |
---|
1577 | DO k = nzb, nzt |
---|
1578 | ! |
---|
1579 | !-- In a first step, if grid point is below or equal the given |
---|
1580 | !-- terrain height, grid point is flagged to be of type natural. |
---|
1581 | !-- Please note, in case there is also a building which is lower |
---|
1582 | !-- than the vertical grid spacing, initialization of surface |
---|
1583 | !-- attributes will not be correct as given surface information |
---|
1584 | !-- will not be in accordance to the classified grid points. |
---|
1585 | !-- Hence, in this case, de-flag the grid point and give it |
---|
1586 | !-- urban type instead. |
---|
1587 | IF ( zu(k) - ocean_offset <= terrain_height_f%var(j,i) ) THEN |
---|
1588 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1589 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 1 ) |
---|
1590 | topo_top_index = k ! topo_top_index + 1 |
---|
1591 | ENDIF |
---|
1592 | ! |
---|
1593 | !-- Set building grid points. Here, only consider 2D buildings. |
---|
1594 | !-- 3D buildings require separate treatment. |
---|
1595 | IF ( buildings_f%from_file .AND. buildings_f%lod == 1 ) THEN |
---|
1596 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
1597 | IF ( zu(k) - ocean_offset <= & |
---|
1598 | oro_max(nr) + buildings_f%var_2d(j,i) ) THEN |
---|
1599 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1600 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
1601 | ! |
---|
1602 | !-- De-flag grid point of type natural. See comment above. |
---|
1603 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 1 ) |
---|
1604 | ENDIF |
---|
1605 | ENDIF |
---|
1606 | ENDIF |
---|
1607 | ENDDO |
---|
1608 | ! |
---|
1609 | !-- Map 3D buildings onto terrain height. |
---|
1610 | !-- In case of any slopes, map building on top of maximum terrain |
---|
1611 | !-- height covered by the building. In other words, extend |
---|
1612 | !-- building down to the respective local terrain-surface height. |
---|
1613 | IF ( buildings_f%from_file .AND. buildings_f%lod == 2 ) THEN |
---|
1614 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
1615 | ! |
---|
1616 | !-- Extend building down to the terrain surface, i.e. fill-up |
---|
1617 | !-- surface irregularities below a building. Note, oro_max |
---|
1618 | !-- is already a discrete height according to the all-or-nothing |
---|
1619 | !-- approach, i.e. grid box is either topography or atmosphere, |
---|
1620 | !-- terrain top is defined at upper bound of the grid box. |
---|
1621 | !-- Hence, check for zw in this case. |
---|
1622 | !-- Note, do this only for buildings which are surface mounted, |
---|
1623 | !-- i.e. building types 1-6. Below bridges, which are represented |
---|
1624 | !-- exclusively by building type 7, terrain shape should be |
---|
1625 | !-- maintained. |
---|
1626 | IF ( building_type_f%from_file ) THEN |
---|
1627 | IF ( building_type_f%var(j,i) /= 7 ) THEN |
---|
1628 | DO k = topo_top_index + 1, nzt + 1 |
---|
1629 | IF ( zw(k) - ocean_offset <= oro_max(nr) ) THEN |
---|
1630 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1631 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
1632 | ENDIF |
---|
1633 | ENDDO |
---|
1634 | ! |
---|
1635 | !-- After surface irregularities are smoothen, determine |
---|
1636 | !-- lower start index where building starts. |
---|
1637 | DO k = nzb, nzt |
---|
1638 | IF ( zw(k) - ocean_offset <= oro_max(nr) ) & |
---|
1639 | topo_top_index = k |
---|
1640 | ENDDO |
---|
1641 | ENDIF |
---|
1642 | ENDIF |
---|
1643 | ! |
---|
1644 | !-- Finally, map building on top. |
---|
1645 | k2 = 0 |
---|
1646 | DO k = topo_top_index, nzt + 1 |
---|
1647 | IF ( k2 <= buildings_f%nz-1 ) THEN |
---|
1648 | IF ( buildings_f%var_3d(k2,j,i) == 1 ) THEN |
---|
1649 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1650 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 1 ) |
---|
1651 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
1652 | ENDIF |
---|
1653 | ENDIF |
---|
1654 | k2 = k2 + 1 |
---|
1655 | ENDDO |
---|
1656 | ENDIF |
---|
1657 | ENDIF |
---|
1658 | ENDDO |
---|
1659 | ENDDO |
---|
1660 | ! |
---|
1661 | !-- Deallocate temporary arrays required for processing and reading data |
---|
1662 | IF ( ALLOCATED( oro_max ) ) DEALLOCATE( oro_max ) |
---|
1663 | IF ( ALLOCATED( oro_max_l ) ) DEALLOCATE( oro_max_l ) |
---|
1664 | IF ( ALLOCATED( build_ids_final ) ) DEALLOCATE( build_ids_final ) |
---|
1665 | ! |
---|
1666 | !-- Topography input via ASCII format. |
---|
1667 | ELSE |
---|
1668 | ocean_offset = MERGE( zw(0), 0.0_wp, ocean_mode ) |
---|
1669 | topo_3d = IBSET( topo_3d, 0 ) |
---|
1670 | topo_3d(nzb,:,:) = IBCLR( topo_3d(nzb,:,:), 0 ) |
---|
1671 | DO i = nxl, nxr |
---|
1672 | DO j = nys, nyn |
---|
1673 | DO k = nzb, nzt |
---|
1674 | ! |
---|
1675 | !-- Flag topography for all grid points which are below |
---|
1676 | !-- the local topography height. |
---|
1677 | !-- Note, each topography is flagged as building. |
---|
1678 | IF ( zu(k) - ocean_offset <= buildings_f%var_2d(j,i) ) THEN |
---|
1679 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1680 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) !indicates building |
---|
1681 | ENDIF |
---|
1682 | ENDDO |
---|
1683 | ENDDO |
---|
1684 | ENDDO |
---|
1685 | ENDIF |
---|
1686 | |
---|
1687 | CALL exchange_horiz_int( topo_3d, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
1688 | |
---|
1689 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
1690 | IF ( nys == 0 ) topo_3d(:,-1,:) = topo_3d(:,0,:) |
---|
1691 | IF ( nyn == ny ) topo_3d(:,ny+1,:) = topo_3d(:,ny,:) |
---|
1692 | ENDIF |
---|
1693 | |
---|
1694 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
1695 | IF ( nxl == 0 ) topo_3d(:,:,-1) = topo_3d(:,:,0) |
---|
1696 | IF ( nxr == nx ) topo_3d(:,:,nx+1) = topo_3d(:,:,nx) |
---|
1697 | ENDIF |
---|
1698 | |
---|
1699 | END SUBROUTINE process_topography |
---|
1700 | |
---|
1701 | |
---|
1702 | ! Description: |
---|
1703 | ! -----------------------------------------------------------------------------! |
---|
1704 | !> Filter topography, i.e. fill holes resolved by only one grid point. |
---|
1705 | !> Such holes are suspected to lead to velocity blow-ups as continuity |
---|
1706 | !> equation on discrete grid cannot be fulfilled in such case. |
---|
1707 | !------------------------------------------------------------------------------! |
---|
1708 | SUBROUTINE filter_topography( topo_3d ) |
---|
1709 | |
---|
1710 | USE control_parameters, & |
---|
1711 | ONLY: bc_lr_cyc, bc_ns_cyc, message_string |
---|
1712 | |
---|
1713 | USE indices, & |
---|
1714 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nzb, nzt |
---|
1715 | |
---|
1716 | USE netcdf_data_input_mod, & |
---|
1717 | ONLY: building_id_f, building_type_f |
---|
1718 | |
---|
1719 | USE pegrid |
---|
1720 | |
---|
1721 | IMPLICIT NONE |
---|
1722 | |
---|
1723 | LOGICAL :: filled = .FALSE. !< flag indicating if holes were filled |
---|
1724 | |
---|
1725 | INTEGER(iwp) :: i !< running index along x-direction |
---|
1726 | INTEGER(iwp) :: j !< running index along y-direction |
---|
1727 | INTEGER(iwp) :: k !< running index along z-direction |
---|
1728 | INTEGER(iwp) :: num_hole !< number of holes (in topography) resolved by only one grid point |
---|
1729 | INTEGER(iwp) :: num_hole_l !< number of holes (in topography) resolved by only one grid point on local PE |
---|
1730 | INTEGER(iwp) :: num_wall !< number of surrounding vertical walls for a single grid point |
---|
1731 | |
---|
1732 | INTEGER(iwp), DIMENSION(:,:,:), ALLOCATABLE :: topo_tmp !< temporary 3D-topography used to fill holes |
---|
1733 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo_3d !< 3D-topography array merging buildings and orography |
---|
1734 | ! |
---|
1735 | !-- Before checking for holes, set lateral boundary conditions for |
---|
1736 | !-- topography. After hole-filling, boundary conditions must be set again. |
---|
1737 | !-- Several iterations are performed, in order to fill holes which might |
---|
1738 | !-- emerge by the filling-algorithm itself. |
---|
1739 | ALLOCATE( topo_tmp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
1740 | topo_tmp = 0 |
---|
1741 | |
---|
1742 | num_hole = 99999 |
---|
1743 | DO WHILE ( num_hole > 0 ) |
---|
1744 | |
---|
1745 | num_hole = 0 |
---|
1746 | CALL exchange_horiz_int( topo_3d, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
1747 | ! |
---|
1748 | !-- Exchange also building ID and type. Note, building_type is an one-byte |
---|
1749 | !-- variable. |
---|
1750 | IF ( building_id_f%from_file ) & |
---|
1751 | CALL exchange_horiz_2d_int( building_id_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
1752 | IF ( building_type_f%from_file ) & |
---|
1753 | CALL exchange_horiz_2d_byte( building_type_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
1754 | |
---|
1755 | topo_tmp = topo_3d |
---|
1756 | ! |
---|
1757 | !-- In case of non-cyclic lateral boundaries, assume lateral boundary to be |
---|
1758 | !-- a solid wall. Thus, intermediate spaces of one grid point between |
---|
1759 | !-- boundary and some topographic structure will be filled. |
---|
1760 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
1761 | IF ( nys == 0 ) topo_tmp(:,-1,:) = IBCLR( topo_tmp(:,0,:), 0 ) |
---|
1762 | IF ( nyn == ny ) topo_tmp(:,ny+1,:) = IBCLR( topo_tmp(:,ny,:), 0 ) |
---|
1763 | ENDIF |
---|
1764 | |
---|
1765 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
1766 | IF ( nxl == 0 ) topo_tmp(:,:,-1) = IBCLR( topo_tmp(:,:,0), 0 ) |
---|
1767 | IF ( nxr == nx ) topo_tmp(:,:,nx+1) = IBCLR( topo_tmp(:,:,nx), 0 ) |
---|
1768 | ENDIF |
---|
1769 | |
---|
1770 | num_hole_l = 0 |
---|
1771 | DO i = nxl, nxr |
---|
1772 | DO j = nys, nyn |
---|
1773 | DO k = nzb+1, nzt |
---|
1774 | IF ( BTEST( topo_tmp(k,j,i), 0 ) ) THEN |
---|
1775 | num_wall = 0 |
---|
1776 | IF ( .NOT. BTEST( topo_tmp(k,j-1,i), 0 ) ) & |
---|
1777 | num_wall = num_wall + 1 |
---|
1778 | IF ( .NOT. BTEST( topo_tmp(k,j+1,i), 0 ) ) & |
---|
1779 | num_wall = num_wall + 1 |
---|
1780 | IF ( .NOT. BTEST( topo_tmp(k,j,i-1), 0 ) ) & |
---|
1781 | num_wall = num_wall + 1 |
---|
1782 | IF ( .NOT. BTEST( topo_tmp(k,j,i+1), 0 ) ) & |
---|
1783 | num_wall = num_wall + 1 |
---|
1784 | IF ( .NOT. BTEST( topo_tmp(k-1,j,i), 0 ) ) & |
---|
1785 | num_wall = num_wall + 1 |
---|
1786 | IF ( .NOT. BTEST( topo_tmp(k+1,j,i), 0 ) ) & |
---|
1787 | num_wall = num_wall + 1 |
---|
1788 | |
---|
1789 | IF ( num_wall >= 4 ) THEN |
---|
1790 | num_hole_l = num_hole_l + 1 |
---|
1791 | ! |
---|
1792 | !-- Clear flag 0 and set special flag ( bit 3) to indicate |
---|
1793 | !-- that new topography point is a result of filtering process. |
---|
1794 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1795 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 3 ) |
---|
1796 | ! |
---|
1797 | !-- If filled grid point is occupied by a building, classify |
---|
1798 | !-- it as building grid point. |
---|
1799 | IF ( building_type_f%from_file ) THEN |
---|
1800 | IF ( building_type_f%var(j,i) /= & |
---|
1801 | building_type_f%fill .OR. & |
---|
1802 | building_type_f%var(j+1,i) /= & |
---|
1803 | building_type_f%fill .OR. & |
---|
1804 | building_type_f%var(j-1,i) /= & |
---|
1805 | building_type_f%fill .OR. & |
---|
1806 | building_type_f%var(j,i+1) /= & |
---|
1807 | building_type_f%fill .OR. & |
---|
1808 | building_type_f%var(j,i-1) /= & |
---|
1809 | building_type_f%fill ) THEN |
---|
1810 | ! |
---|
1811 | !-- Set flag indicating building surfaces |
---|
1812 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
1813 | ! |
---|
1814 | !-- Set building_type and ID at this position if not |
---|
1815 | !-- already set. This is required for proper |
---|
1816 | !-- initialization of urban-surface energy balance |
---|
1817 | !-- solver. |
---|
1818 | IF ( building_type_f%var(j,i) == & |
---|
1819 | building_type_f%fill ) THEN |
---|
1820 | |
---|
1821 | IF ( building_type_f%var(j+1,i) /= & |
---|
1822 | building_type_f%fill ) THEN |
---|
1823 | building_type_f%var(j,i) = & |
---|
1824 | building_type_f%var(j+1,i) |
---|
1825 | building_id_f%var(j,i) = & |
---|
1826 | building_id_f%var(j+1,i) |
---|
1827 | ELSEIF ( building_type_f%var(j-1,i) /= & |
---|
1828 | building_type_f%fill ) THEN |
---|
1829 | building_type_f%var(j,i) = & |
---|
1830 | building_type_f%var(j-1,i) |
---|
1831 | building_id_f%var(j,i) = & |
---|
1832 | building_id_f%var(j-1,i) |
---|
1833 | ELSEIF ( building_type_f%var(j,i+1) /= & |
---|
1834 | building_type_f%fill ) THEN |
---|
1835 | building_type_f%var(j,i) = & |
---|
1836 | building_type_f%var(j,i+1) |
---|
1837 | building_id_f%var(j,i) = & |
---|
1838 | building_id_f%var(j,i+1) |
---|
1839 | ELSEIF ( building_type_f%var(j,i-1) /= & |
---|
1840 | building_type_f%fill ) THEN |
---|
1841 | building_type_f%var(j,i) = & |
---|
1842 | building_type_f%var(j,i-1) |
---|
1843 | building_id_f%var(j,i) = & |
---|
1844 | building_id_f%var(j,i-1) |
---|
1845 | ENDIF |
---|
1846 | ENDIF |
---|
1847 | ENDIF |
---|
1848 | ENDIF |
---|
1849 | ! |
---|
1850 | !-- If filled grid point is already classified as building |
---|
1851 | !-- everything is fine, else classify this grid point as |
---|
1852 | !-- natural type grid point. This case, values for the |
---|
1853 | !-- surface type are already set. |
---|
1854 | IF ( .NOT. BTEST( topo_3d(k,j,i), 2 ) ) THEN |
---|
1855 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 1 ) |
---|
1856 | ENDIF |
---|
1857 | ENDIF |
---|
1858 | ENDIF |
---|
1859 | ENDDO |
---|
1860 | ENDDO |
---|
1861 | ENDDO |
---|
1862 | ! |
---|
1863 | !-- Count the total number of holes, required for informative message. |
---|
1864 | #if defined( __parallel ) |
---|
1865 | CALL MPI_ALLREDUCE( num_hole_l, num_hole, 1, MPI_INTEGER, MPI_SUM, & |
---|
1866 | comm2d, ierr ) |
---|
1867 | #else |
---|
1868 | num_hole = num_hole_l |
---|
1869 | #endif |
---|
1870 | IF ( num_hole > 0 .AND. .NOT. filled ) filled = .TRUE. |
---|
1871 | |
---|
1872 | ENDDO |
---|
1873 | ! |
---|
1874 | !-- Create an informative message if any holes were filled. |
---|
1875 | IF ( filled ) THEN |
---|
1876 | WRITE( message_string, * ) 'Topography was filtered, i.e. holes ' // & |
---|
1877 | 'resolved by only one grid point ' // & |
---|
1878 | 'were filled during initialization.' |
---|
1879 | CALL message( 'init_grid', 'PA0430', 0, 0, 0, 6, 0 ) |
---|
1880 | ENDIF |
---|
1881 | |
---|
1882 | DEALLOCATE( topo_tmp ) |
---|
1883 | ! |
---|
1884 | !-- Finally, exchange topo_3d array again and if necessary set Neumann boundary |
---|
1885 | !-- condition in case of non-cyclic lateral boundaries. |
---|
1886 | CALL exchange_horiz_int( topo_3d, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
1887 | |
---|
1888 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
1889 | IF ( nys == 0 ) topo_3d(:,-1,:) = topo_3d(:,0,:) |
---|
1890 | IF ( nyn == ny ) topo_3d(:,ny+1,:) = topo_3d(:,ny,:) |
---|
1891 | ENDIF |
---|
1892 | |
---|
1893 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
1894 | IF ( nxl == 0 ) topo_3d(:,:,-1) = topo_3d(:,:,0) |
---|
1895 | IF ( nxr == nx ) topo_3d(:,:,nx+1) = topo_3d(:,:,nx) |
---|
1896 | ENDIF |
---|
1897 | ! |
---|
1898 | !-- Exchange building ID and type. Note, building_type is an one-byte variable. |
---|
1899 | IF ( building_id_f%from_file ) & |
---|
1900 | CALL exchange_horiz_2d_int( building_id_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
1901 | IF ( building_type_f%from_file ) & |
---|
1902 | CALL exchange_horiz_2d_byte( building_type_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
1903 | |
---|
1904 | END SUBROUTINE filter_topography |
---|
1905 | |
---|
1906 | |
---|
1907 | ! Description: |
---|
1908 | ! -----------------------------------------------------------------------------! |
---|
1909 | !> Reads topography information from file or sets generic topography. Moreover, |
---|
1910 | !> all topography-relevant topography arrays are initialized, and grid flags |
---|
1911 | !> are set. |
---|
1912 | !------------------------------------------------------------------------------! |
---|
1913 | SUBROUTINE init_topo( topo ) |
---|
1914 | |
---|
1915 | USE arrays_3d, & |
---|
1916 | ONLY: zw |
---|
1917 | |
---|
1918 | USE control_parameters, & |
---|
1919 | ONLY: bc_lr_cyc, bc_ns_cyc, building_height, building_length_x, & |
---|
1920 | building_length_y, building_wall_left, building_wall_south, & |
---|
1921 | canyon_height, canyon_wall_left, canyon_wall_south, & |
---|
1922 | canyon_width_x, canyon_width_y, dp_level_ind_b, dz, & |
---|
1923 | message_string, topography, topography_grid_convention, & |
---|
1924 | tunnel_height, tunnel_length, tunnel_width_x, tunnel_width_y, & |
---|
1925 | tunnel_wall_depth |
---|
1926 | |
---|
1927 | USE grid_variables, & |
---|
1928 | ONLY: dx, dy |
---|
1929 | |
---|
1930 | USE indices, & |
---|
1931 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nz, & |
---|
1932 | nzb, nzt |
---|
1933 | |
---|
1934 | USE kinds |
---|
1935 | |
---|
1936 | USE pegrid |
---|
1937 | |
---|
1938 | USE surface_mod, & |
---|
1939 | ONLY: get_topography_top_index, get_topography_top_index_ji |
---|
1940 | |
---|
1941 | IMPLICIT NONE |
---|
1942 | |
---|
1943 | INTEGER(iwp) :: bh !< temporary vertical index of building height |
---|
1944 | INTEGER(iwp) :: blx !< grid point number of building size along x |
---|
1945 | INTEGER(iwp) :: bly !< grid point number of building size along y |
---|
1946 | INTEGER(iwp) :: bxl !< index for left building wall |
---|
1947 | INTEGER(iwp) :: bxr !< index for right building wall |
---|
1948 | INTEGER(iwp) :: byn !< index for north building wall |
---|
1949 | INTEGER(iwp) :: bys !< index for south building wall |
---|
1950 | INTEGER(iwp) :: ch !< temporary vertical index for canyon height |
---|
1951 | INTEGER(iwp) :: cwx !< grid point number of canyon size along x |
---|
1952 | INTEGER(iwp) :: cwy !< grid point number of canyon size along y |
---|
1953 | INTEGER(iwp) :: cxl !< index for left canyon wall |
---|
1954 | INTEGER(iwp) :: cxr !< index for right canyon wall |
---|
1955 | INTEGER(iwp) :: cyn !< index for north canyon wall |
---|
1956 | INTEGER(iwp) :: cys !< index for south canyon wall |
---|
1957 | INTEGER(iwp) :: i !< index variable along x |
---|
1958 | INTEGER(iwp) :: j !< index variable along y |
---|
1959 | INTEGER(iwp) :: k !< index variable along z |
---|
1960 | INTEGER(iwp) :: hv_in !< heavyside function to model inner tunnel surface |
---|
1961 | INTEGER(iwp) :: hv_out !< heavyside function to model outer tunnel surface |
---|
1962 | INTEGER(iwp) :: txe_out !< end position of outer tunnel wall in x |
---|
1963 | INTEGER(iwp) :: txs_out !< start position of outer tunnel wall in x |
---|
1964 | INTEGER(iwp) :: tye_out !< end position of outer tunnel wall in y |
---|
1965 | INTEGER(iwp) :: tys_out !< start position of outer tunnel wall in y |
---|
1966 | INTEGER(iwp) :: txe_in !< end position of inner tunnel wall in x |
---|
1967 | INTEGER(iwp) :: txs_in !< start position of inner tunnel wall in x |
---|
1968 | INTEGER(iwp) :: tye_in !< end position of inner tunnel wall in y |
---|
1969 | INTEGER(iwp) :: tys_in !< start position of inner tunnel wall in y |
---|
1970 | INTEGER(iwp) :: td !< tunnel wall depth |
---|
1971 | INTEGER(iwp) :: th !< height of outer tunnel wall |
---|
1972 | |
---|
1973 | INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: nzb_local !< index for topography top at cell-center |
---|
1974 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo !< input array for 3D topography and dummy array for setting "outer"-flags |
---|
1975 | |
---|
1976 | |
---|
1977 | ! |
---|
1978 | !-- Set outer and inner index arrays for non-flat topography. |
---|
1979 | !-- Here consistency checks concerning domain size and periodicity are |
---|
1980 | !-- necessary. |
---|
1981 | !-- Within this SELECT CASE structure only nzb_local is initialized |
---|
1982 | !-- individually depending on the chosen topography type, all other index |
---|
1983 | !-- arrays are initialized further below. |
---|
1984 | SELECT CASE ( TRIM( topography ) ) |
---|
1985 | |
---|
1986 | CASE ( 'flat' ) |
---|
1987 | ! |
---|
1988 | !-- Initialilize 3D topography array, used later for initializing flags |
---|
1989 | topo(nzb+1:nzt+1,:,:) = IBSET( topo(nzb+1:nzt+1,:,:), 0 ) |
---|
1990 | |
---|
1991 | CASE ( 'single_building' ) |
---|
1992 | ! |
---|
1993 | !-- Single rectangular building, by default centered in the middle of the |
---|
1994 | !-- total domain |
---|
1995 | blx = NINT( building_length_x / dx ) |
---|
1996 | bly = NINT( building_length_y / dy ) |
---|
1997 | bh = MINLOC( ABS( zw - building_height ), 1 ) - 1 |
---|
1998 | IF ( ABS( zw(bh) - building_height ) == & |
---|
1999 | ABS( zw(bh+1) - building_height ) ) bh = bh + 1 |
---|
2000 | IF ( building_wall_left == 9999999.9_wp ) THEN |
---|
2001 | building_wall_left = ( nx + 1 - blx ) / 2 * dx |
---|
2002 | ENDIF |
---|
2003 | bxl = NINT( building_wall_left / dx ) |
---|
2004 | bxr = bxl + blx |
---|
2005 | |
---|
2006 | IF ( building_wall_south == 9999999.9_wp ) THEN |
---|
2007 | building_wall_south = ( ny + 1 - bly ) / 2 * dy |
---|
2008 | ENDIF |
---|
2009 | bys = NINT( building_wall_south / dy ) |
---|
2010 | byn = bys + bly |
---|
2011 | |
---|
2012 | ! |
---|
2013 | !-- Building size has to meet some requirements |
---|
2014 | IF ( ( bxl < 1 ) .OR. ( bxr > nx-1 ) .OR. ( bxr < bxl+3 ) .OR. & |
---|
2015 | ( bys < 1 ) .OR. ( byn > ny-1 ) .OR. ( byn < bys+3 ) ) THEN |
---|
2016 | WRITE( message_string, * ) 'inconsistent building parameters:', & |
---|
2017 | '&bxl=', bxl, 'bxr=', bxr, 'bys=', bys, & |
---|
2018 | 'byn=', byn, 'nx=', nx, 'ny=', ny |
---|
2019 | CALL message( 'init_grid', 'PA0203', 1, 2, 0, 6, 0 ) |
---|
2020 | ENDIF |
---|
2021 | |
---|
2022 | ALLOCATE( nzb_local(nysg:nyng,nxlg:nxrg) ) |
---|
2023 | nzb_local = 0 |
---|
2024 | ! |
---|
2025 | !-- Define the building. |
---|
2026 | IF ( bxl <= nxr .AND. bxr >= nxl .AND. & |
---|
2027 | bys <= nyn .AND. byn >= nys ) & |
---|
2028 | nzb_local(MAX(nys,bys):MIN(nyn,byn),MAX(nxl,bxl):MIN(nxr,bxr)) = bh |
---|
2029 | ! |
---|
2030 | !-- Set bit array on basis of nzb_local |
---|
2031 | DO i = nxl, nxr |
---|
2032 | DO j = nys, nyn |
---|
2033 | topo(nzb_local(j,i)+1:nzt+1,j,i) = & |
---|
2034 | IBSET( topo(nzb_local(j,i)+1:nzt+1,j,i), 0 ) |
---|
2035 | ENDDO |
---|
2036 | ENDDO |
---|
2037 | |
---|
2038 | DEALLOCATE( nzb_local ) |
---|
2039 | |
---|
2040 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2041 | ! |
---|
2042 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
2043 | !-- boundary conditions for topography. |
---|
2044 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
2045 | IF ( nys == 0 ) THEN |
---|
2046 | DO i = 1, nbgp |
---|
2047 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
2048 | ENDDO |
---|
2049 | ENDIF |
---|
2050 | IF ( nyn == ny ) THEN |
---|
2051 | DO i = 1, nbgp |
---|
2052 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
2053 | ENDDO |
---|
2054 | ENDIF |
---|
2055 | ENDIF |
---|
2056 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
2057 | IF ( nxl == 0 ) THEN |
---|
2058 | DO i = 1, nbgp |
---|
2059 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
2060 | ENDDO |
---|
2061 | ENDIF |
---|
2062 | IF ( nxr == nx ) THEN |
---|
2063 | DO i = 1, nbgp |
---|
2064 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
2065 | ENDDO |
---|
2066 | ENDIF |
---|
2067 | ENDIF |
---|
2068 | |
---|
2069 | CASE ( 'single_street_canyon' ) |
---|
2070 | ! |
---|
2071 | !-- Single quasi-2D street canyon of infinite length in x or y direction. |
---|
2072 | !-- The canyon is centered in the other direction by default. |
---|
2073 | IF ( canyon_width_x /= 9999999.9_wp ) THEN |
---|
2074 | ! |
---|
2075 | !-- Street canyon in y direction |
---|
2076 | cwx = NINT( canyon_width_x / dx ) |
---|
2077 | IF ( canyon_wall_left == 9999999.9_wp ) THEN |
---|
2078 | canyon_wall_left = ( nx + 1 - cwx ) / 2 * dx |
---|
2079 | ENDIF |
---|
2080 | cxl = NINT( canyon_wall_left / dx ) |
---|
2081 | cxr = cxl + cwx |
---|
2082 | ELSEIF ( canyon_width_y /= 9999999.9_wp ) THEN |
---|
2083 | ! |
---|
2084 | !-- Street canyon in x direction |
---|
2085 | cwy = NINT( canyon_width_y / dy ) |
---|
2086 | IF ( canyon_wall_south == 9999999.9_wp ) THEN |
---|
2087 | canyon_wall_south = ( ny + 1 - cwy ) / 2 * dy |
---|
2088 | ENDIF |
---|
2089 | cys = NINT( canyon_wall_south / dy ) |
---|
2090 | cyn = cys + cwy |
---|
2091 | |
---|
2092 | ELSE |
---|
2093 | |
---|
2094 | message_string = 'no street canyon width given' |
---|
2095 | CALL message( 'init_grid', 'PA0204', 1, 2, 0, 6, 0 ) |
---|
2096 | |
---|
2097 | ENDIF |
---|
2098 | |
---|
2099 | ch = MINLOC( ABS( zw - canyon_height ), 1 ) - 1 |
---|
2100 | IF ( ABS( zw(ch) - canyon_height ) == & |
---|
2101 | ABS( zw(ch+1) - canyon_height ) ) ch = ch + 1 |
---|
2102 | dp_level_ind_b = ch |
---|
2103 | ! |
---|
2104 | !-- Street canyon size has to meet some requirements |
---|
2105 | IF ( canyon_width_x /= 9999999.9_wp ) THEN |
---|
2106 | IF ( ( cxl < 1 ) .OR. ( cxr > nx-1 ) .OR. ( cwx < 3 ) .OR. & |
---|
2107 | ( ch < 3 ) ) THEN |
---|
2108 | WRITE( message_string, * ) 'inconsistent canyon parameters:', & |
---|
2109 | '&cxl=', cxl, ' cxr=', cxr, & |
---|
2110 | ' cwx=', cwx, & |
---|
2111 | ' ch=', ch, ' nx=', nx, ' ny=', ny |
---|
2112 | CALL message( 'init_grid', 'PA0205', 1, 2, 0, 6, 0 ) |
---|
2113 | ENDIF |
---|
2114 | ELSEIF ( canyon_width_y /= 9999999.9_wp ) THEN |
---|
2115 | IF ( ( cys < 1 ) .OR. ( cyn > ny-1 ) .OR. ( cwy < 3 ) .OR. & |
---|
2116 | ( ch < 3 ) ) THEN |
---|
2117 | WRITE( message_string, * ) 'inconsistent canyon parameters:', & |
---|
2118 | '&cys=', cys, ' cyn=', cyn, & |
---|
2119 | ' cwy=', cwy, & |
---|
2120 | ' ch=', ch, ' nx=', nx, ' ny=', ny |
---|
2121 | CALL message( 'init_grid', 'PA0206', 1, 2, 0, 6, 0 ) |
---|
2122 | ENDIF |
---|
2123 | ENDIF |
---|
2124 | IF ( canyon_width_x /= 9999999.9_wp .AND. & |
---|
2125 | canyon_width_y /= 9999999.9_wp ) THEN |
---|
2126 | message_string = 'inconsistent canyon parameters:' // & |
---|
2127 | '&street canyon can only be oriented' // & |
---|
2128 | ' either in x- or in y-direction' |
---|
2129 | CALL message( 'init_grid', 'PA0207', 1, 2, 0, 6, 0 ) |
---|
2130 | ENDIF |
---|
2131 | |
---|
2132 | ALLOCATE( nzb_local(nysg:nyng,nxlg:nxrg) ) |
---|
2133 | nzb_local = ch |
---|
2134 | IF ( canyon_width_x /= 9999999.9_wp ) THEN |
---|
2135 | IF ( cxl <= nxr .AND. cxr >= nxl ) & |
---|
2136 | nzb_local(:,MAX(nxl,cxl+1):MIN(nxr,cxr-1)) = 0 |
---|
2137 | ELSEIF ( canyon_width_y /= 9999999.9_wp ) THEN |
---|
2138 | IF ( cys <= nyn .AND. cyn >= nys ) & |
---|
2139 | nzb_local(MAX(nys,cys+1):MIN(nyn,cyn-1),:) = 0 |
---|
2140 | ENDIF |
---|
2141 | ! |
---|
2142 | !-- Set bit array on basis of nzb_local |
---|
2143 | DO i = nxl, nxr |
---|
2144 | DO j = nys, nyn |
---|
2145 | topo(nzb_local(j,i)+1:nzt+1,j,i) = & |
---|
2146 | IBSET( topo(nzb_local(j,i)+1:nzt+1,j,i), 0 ) |
---|
2147 | ENDDO |
---|
2148 | ENDDO |
---|
2149 | DEALLOCATE( nzb_local ) |
---|
2150 | |
---|
2151 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2152 | ! |
---|
2153 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
2154 | !-- boundary conditions for topography. |
---|
2155 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
2156 | IF ( nys == 0 ) THEN |
---|
2157 | DO i = 1, nbgp |
---|
2158 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
2159 | ENDDO |
---|
2160 | ENDIF |
---|
2161 | IF ( nyn == ny ) THEN |
---|
2162 | DO i = 1, nbgp |
---|
2163 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
2164 | ENDDO |
---|
2165 | ENDIF |
---|
2166 | ENDIF |
---|
2167 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
2168 | IF ( nxl == 0 ) THEN |
---|
2169 | DO i = 1, nbgp |
---|
2170 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
2171 | ENDDO |
---|
2172 | ENDIF |
---|
2173 | IF ( nxr == nx ) THEN |
---|
2174 | DO i = 1, nbgp |
---|
2175 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
2176 | ENDDO |
---|
2177 | ENDIF |
---|
2178 | ENDIF |
---|
2179 | |
---|
2180 | CASE ( 'tunnel' ) |
---|
2181 | |
---|
2182 | ! |
---|
2183 | !-- Tunnel height |
---|
2184 | IF ( tunnel_height == 9999999.9_wp ) THEN |
---|
2185 | th = zw( INT( 0.2 * nz) ) |
---|
2186 | ELSE |
---|
2187 | th = tunnel_height |
---|
2188 | ENDIF |
---|
2189 | ! |
---|
2190 | !-- Tunnel-wall depth |
---|
2191 | IF ( tunnel_wall_depth == 9999999.9_wp ) THEN |
---|
2192 | td = MAX ( dx, dy, dz(1) ) |
---|
2193 | ELSE |
---|
2194 | td = tunnel_wall_depth |
---|
2195 | ENDIF |
---|
2196 | ! |
---|
2197 | !-- Check for tunnel width |
---|
2198 | IF ( tunnel_width_x == 9999999.9_wp .AND. & |
---|
2199 | tunnel_width_y == 9999999.9_wp ) THEN |
---|
2200 | message_string = 'No tunnel width is given. ' |
---|
2201 | CALL message( 'init_grid', 'PA0280', 1, 2, 0, 6, 0 ) |
---|
2202 | ENDIF |
---|
2203 | IF ( tunnel_width_x /= 9999999.9_wp .AND. & |
---|
2204 | tunnel_width_y /= 9999999.9_wp ) THEN |
---|
2205 | message_string = 'Inconsistent tunnel parameters:' // & |
---|
2206 | 'tunnel can only be oriented' // & |
---|
2207 | 'either in x- or in y-direction.' |
---|
2208 | CALL message( 'init_grid', 'PA0281', 1, 2, 0, 6, 0 ) |
---|
2209 | ENDIF |
---|
2210 | ! |
---|
2211 | !-- Tunnel axis along y |
---|
2212 | IF ( tunnel_width_x /= 9999999.9_wp ) THEN |
---|
2213 | IF ( tunnel_width_x > ( nx + 1 ) * dx ) THEN |
---|
2214 | message_string = 'Tunnel width too large' |
---|
2215 | CALL message( 'init_grid', 'PA0282', 1, 2, 0, 6, 0 ) |
---|
2216 | ENDIF |
---|
2217 | |
---|
2218 | txs_out = INT( ( nx + 1 ) * 0.5_wp * dx - tunnel_width_x * 0.5_wp ) |
---|
2219 | txe_out = INT( ( nx + 1 ) * 0.5_wp * dx + tunnel_width_x * 0.5_wp ) |
---|
2220 | txs_in = INT( ( nx + 1 ) * 0.5_wp * dx - & |
---|
2221 | ( tunnel_width_x * 0.5_wp - td ) ) |
---|
2222 | txe_in = INT( ( nx + 1 ) * 0.5_wp * dx + & |
---|
2223 | ( tunnel_width_x * 0.5_wp - td ) ) |
---|
2224 | |
---|
2225 | tys_out = INT( ( ny + 1 ) * 0.5_wp * dy - tunnel_length * 0.5_wp ) |
---|
2226 | tye_out = INT( ( ny + 1 ) * 0.5_wp * dy + tunnel_length * 0.5_wp ) |
---|
2227 | tys_in = tys_out |
---|
2228 | tye_in = tye_out |
---|
2229 | ENDIF |
---|
2230 | IF ( tunnel_width_x /= 9999999.9_wp .AND. & |
---|
2231 | tunnel_width_x - 2.0_wp * td <= 2.0_wp * dx ) & |
---|
2232 | THEN |
---|
2233 | message_string = 'Tunnel width too small' |
---|
2234 | CALL message( 'init_grid', 'PA0175', 1, 2, 0, 6, 0 ) |
---|
2235 | ENDIF |
---|
2236 | IF ( tunnel_width_y /= 9999999.9_wp .AND. & |
---|
2237 | tunnel_width_y - 2.0_wp * td <= 2.0_wp * dy ) & |
---|
2238 | THEN |
---|
2239 | message_string = 'Tunnel width too small' |
---|
2240 | CALL message( 'init_grid', 'PA0455', 1, 2, 0, 6, 0 ) |
---|
2241 | ENDIF |
---|
2242 | ! |
---|
2243 | !-- Tunnel axis along x |
---|
2244 | IF ( tunnel_width_y /= 9999999.9_wp ) THEN |
---|
2245 | IF ( tunnel_width_y > ( ny + 1 ) * dy ) THEN |
---|
2246 | message_string = 'Tunnel width too large' |
---|
2247 | CALL message( 'init_grid', 'PA0456', 1, 2, 0, 6, 0 ) |
---|
2248 | ENDIF |
---|
2249 | |
---|
2250 | txs_out = INT( ( nx + 1 ) * 0.5_wp * dx - tunnel_length * 0.5_wp ) |
---|
2251 | txe_out = INT( ( nx + 1 ) * 0.5_wp * dx + tunnel_length * 0.5_wp ) |
---|
2252 | txs_in = txs_out |
---|
2253 | txe_in = txe_out |
---|
2254 | |
---|
2255 | tys_out = INT( ( ny + 1 ) * 0.5_wp * dy - tunnel_width_y * 0.5_wp ) |
---|
2256 | tye_out = INT( ( ny + 1 ) * 0.5_wp * dy + tunnel_width_y * 0.5_wp ) |
---|
2257 | tys_in = INT( ( ny + 1 ) * 0.5_wp * dy - & |
---|
2258 | ( tunnel_width_y * 0.5_wp - td ) ) |
---|
2259 | tye_in = INT( ( ny + 1 ) * 0.5_wp * dy + & |
---|
2260 | ( tunnel_width_y * 0.5_wp - td ) ) |
---|
2261 | ENDIF |
---|
2262 | |
---|
2263 | topo = 0 |
---|
2264 | DO i = nxl, nxr |
---|
2265 | DO j = nys, nyn |
---|
2266 | ! |
---|
2267 | !-- Use heaviside function to model outer tunnel surface |
---|
2268 | hv_out = th * 0.5_wp * & |
---|
2269 | ( ( SIGN( 1.0_wp, i * dx - txs_out ) + 1.0_wp ) & |
---|
2270 | - ( SIGN( 1.0_wp, i * dx - txe_out ) + 1.0_wp ) ) |
---|
2271 | |
---|
2272 | hv_out = hv_out * 0.5_wp * & |
---|
2273 | ( ( SIGN( 1.0_wp, j * dy - tys_out ) + 1.0_wp ) & |
---|
2274 | - ( SIGN( 1.0_wp, j * dy - tye_out ) + 1.0_wp ) ) |
---|
2275 | ! |
---|
2276 | !-- Use heaviside function to model inner tunnel surface |
---|
2277 | hv_in = ( th - td ) * 0.5_wp * & |
---|
2278 | ( ( SIGN( 1.0_wp, i * dx - txs_in ) + 1.0_wp ) & |
---|
2279 | - ( SIGN( 1.0_wp, i * dx - txe_in ) + 1.0_wp ) ) |
---|
2280 | |
---|
2281 | hv_in = hv_in * 0.5_wp * & |
---|
2282 | ( ( SIGN( 1.0_wp, j * dy - tys_in ) + 1.0_wp ) & |
---|
2283 | - ( SIGN( 1.0_wp, j * dy - tye_in ) + 1.0_wp ) ) |
---|
2284 | ! |
---|
2285 | !-- Set flags at x-y-positions without any tunnel surface |
---|
2286 | IF ( hv_out - hv_in == 0.0_wp ) THEN |
---|
2287 | topo(nzb+1:nzt+1,j,i) = IBSET( topo(nzb+1:nzt+1,j,i), 0 ) |
---|
2288 | ! |
---|
2289 | !-- Set flags at x-y-positions with tunnel surfaces |
---|
2290 | ELSE |
---|
2291 | DO k = nzb + 1, nzt + 1 |
---|
2292 | ! |
---|
2293 | !-- Inner tunnel |
---|
2294 | IF ( hv_out - hv_in == th ) THEN |
---|
2295 | IF ( zw(k) <= hv_out ) THEN |
---|
2296 | topo(k,j,i) = IBCLR( topo(k,j,i), 0 ) |
---|
2297 | ELSE |
---|
2298 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
2299 | ENDIF |
---|
2300 | ENDIF |
---|
2301 | ! |
---|
2302 | !-- Lateral tunnel walls |
---|
2303 | IF ( hv_out - hv_in == td ) THEN |
---|
2304 | IF ( zw(k) <= hv_in ) THEN |
---|
2305 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
2306 | ELSEIF ( zw(k) > hv_in .AND. zw(k) <= hv_out ) THEN |
---|
2307 | topo(k,j,i) = IBCLR( topo(k,j,i), 0 ) |
---|
2308 | ELSEIF ( zw(k) > hv_out ) THEN |
---|
2309 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
2310 | ENDIF |
---|
2311 | ENDIF |
---|
2312 | ENDDO |
---|
2313 | ENDIF |
---|
2314 | ENDDO |
---|
2315 | ENDDO |
---|
2316 | |
---|
2317 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2318 | ! |
---|
2319 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
2320 | !-- boundary conditions for topography. |
---|
2321 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
2322 | IF ( nys == 0 ) THEN |
---|
2323 | DO i = 1, nbgp |
---|
2324 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
2325 | ENDDO |
---|
2326 | ENDIF |
---|
2327 | IF ( nyn == ny ) THEN |
---|
2328 | DO i = 1, nbgp |
---|
2329 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
2330 | ENDDO |
---|
2331 | ENDIF |
---|
2332 | ENDIF |
---|
2333 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
2334 | IF ( nxl == 0 ) THEN |
---|
2335 | DO i = 1, nbgp |
---|
2336 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
2337 | ENDDO |
---|
2338 | ENDIF |
---|
2339 | IF ( nxr == nx ) THEN |
---|
2340 | DO i = 1, nbgp |
---|
2341 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
2342 | ENDDO |
---|
2343 | ENDIF |
---|
2344 | ENDIF |
---|
2345 | |
---|
2346 | CASE ( 'read_from_file' ) |
---|
2347 | ! |
---|
2348 | !-- Note, topography information have been already read. |
---|
2349 | !-- If required, further process topography, i.e. reference buildings on |
---|
2350 | !-- top of orography and set temporary 3D topography array, which is |
---|
2351 | !-- used later to set grid flags. Calling of this rouinte is also |
---|
2352 | !-- required in case of ASCII input, even though no distinction between |
---|
2353 | !-- terrain- and building height is made in this case. |
---|
2354 | CALL process_topography( topo ) |
---|
2355 | ! |
---|
2356 | !-- Filter holes resolved by only one grid-point |
---|
2357 | CALL filter_topography( topo ) |
---|
2358 | ! |
---|
2359 | !-- Exchange ghost-points, as well as add cyclic or Neumann boundary |
---|
2360 | !-- conditions. |
---|
2361 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2362 | ! |
---|
2363 | !-- Set lateral boundary conditions for topography on all ghost layers |
---|
2364 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
2365 | IF ( nys == 0 ) THEN |
---|
2366 | DO i = 1, nbgp |
---|
2367 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
2368 | ENDDO |
---|
2369 | ENDIF |
---|
2370 | IF ( nyn == ny ) THEN |
---|
2371 | DO i = 1, nbgp |
---|
2372 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
2373 | ENDDO |
---|
2374 | ENDIF |
---|
2375 | ENDIF |
---|
2376 | |
---|
2377 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
2378 | IF ( nxl == 0 ) THEN |
---|
2379 | DO i = 1, nbgp |
---|
2380 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
2381 | ENDDO |
---|
2382 | ENDIF |
---|
2383 | IF ( nxr == nx ) THEN |
---|
2384 | DO i = 1, nbgp |
---|
2385 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
2386 | ENDDO |
---|
2387 | ENDIF |
---|
2388 | ENDIF |
---|
2389 | |
---|
2390 | |
---|
2391 | CASE DEFAULT |
---|
2392 | ! |
---|
2393 | !-- The DEFAULT case is reached either if the parameter topography |
---|
2394 | !-- contains a wrong character string or if the user has defined a special |
---|
2395 | !-- case in the user interface. There, the subroutine user_init_grid |
---|
2396 | !-- checks which of these two conditions applies. |
---|
2397 | CALL user_init_grid( topo ) |
---|
2398 | CALL filter_topography( topo ) |
---|
2399 | |
---|
2400 | END SELECT |
---|
2401 | ! |
---|
2402 | !-- Consistency checks and index array initialization are only required for |
---|
2403 | !-- non-flat topography. |
---|
2404 | IF ( TRIM( topography ) /= 'flat' ) THEN |
---|
2405 | ! |
---|
2406 | !-- In case of non-flat topography, check whether the convention how to |
---|
2407 | !-- define the topography grid has been set correctly, or whether the default |
---|
2408 | !-- is applicable. If this is not possible, abort. |
---|
2409 | IF ( TRIM( topography_grid_convention ) == ' ' ) THEN |
---|
2410 | IF ( TRIM( topography ) /= 'single_building' .AND. & |
---|
2411 | TRIM( topography ) /= 'single_street_canyon' .AND. & |
---|
2412 | TRIM( topography ) /= 'tunnel' .AND. & |
---|
2413 | TRIM( topography ) /= 'read_from_file') THEN |
---|
2414 | !-- The default value is not applicable here, because it is only valid |
---|
2415 | !-- for the four standard cases 'single_building', |
---|
2416 | !-- 'single_street_canyon', 'tunnel' and 'read_from_file' |
---|
2417 | !-- defined in init_grid. |
---|
2418 | WRITE( message_string, * ) & |
---|
2419 | 'The value for "topography_grid_convention" ', & |
---|
2420 | 'is not set. Its default value is & only valid for ', & |
---|
2421 | '"topography" = ''single_building'', ''tunnel'' ', & |
---|
2422 | '''single_street_canyon'' & or ''read_from_file''.', & |
---|
2423 | '& Choose ''cell_edge'' or ''cell_center''.' |
---|
2424 | CALL message( 'init_grid', 'PA0239', 1, 2, 0, 6, 0 ) |
---|
2425 | ELSE |
---|
2426 | !-- The default value is applicable here. |
---|
2427 | !-- Set convention according to topography. |
---|
2428 | IF ( TRIM( topography ) == 'single_building' .OR. & |
---|
2429 | TRIM( topography ) == 'single_street_canyon' ) THEN |
---|
2430 | topography_grid_convention = 'cell_edge' |
---|
2431 | ELSEIF ( TRIM( topography ) == 'read_from_file' .OR. & |
---|
2432 | TRIM( topography ) == 'tunnel') THEN |
---|
2433 | topography_grid_convention = 'cell_center' |
---|
2434 | ENDIF |
---|
2435 | ENDIF |
---|
2436 | ELSEIF ( TRIM( topography_grid_convention ) /= 'cell_edge' .AND. & |
---|
2437 | TRIM( topography_grid_convention ) /= 'cell_center' ) THEN |
---|
2438 | WRITE( message_string, * ) & |
---|
2439 | 'The value for "topography_grid_convention" is ', & |
---|
2440 | 'not recognized.& Choose ''cell_edge'' or ''cell_center''.' |
---|
2441 | CALL message( 'init_grid', 'PA0240', 1, 2, 0, 6, 0 ) |
---|
2442 | ENDIF |
---|
2443 | |
---|
2444 | |
---|
2445 | IF ( topography_grid_convention == 'cell_edge' ) THEN |
---|
2446 | ! |
---|
2447 | !-- The array nzb_local as defined using the 'cell_edge' convention |
---|
2448 | !-- describes the actual total size of topography which is defined at the |
---|
2449 | !-- cell edges where u=0 on the topography walls in x-direction and v=0 |
---|
2450 | !-- on the topography walls in y-direction. However, PALM uses individual |
---|
2451 | !-- arrays nzb_u|v|w|s_inner|outer that are based on nzb_s_inner. |
---|
2452 | !-- Therefore, the extent of topography in nzb_local is now reduced by |
---|
2453 | !-- 1dx at the E topography walls and by 1dy at the N topography walls |
---|
2454 | !-- to form the basis for nzb_s_inner. |
---|
2455 | !-- Note, the reverse memory access (i-j instead of j-i) is absolutely |
---|
2456 | !-- required at this point. |
---|
2457 | DO j = nys+1, nyn+1 |
---|
2458 | DO i = nxl-1, nxr |
---|
2459 | DO k = nzb, nzt+1 |
---|
2460 | IF ( BTEST( topo(k,j,i), 0 ) .OR. & |
---|
2461 | BTEST( topo(k,j,i+1), 0 ) ) & |
---|
2462 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
2463 | ENDDO |
---|
2464 | ENDDO |
---|
2465 | ENDDO |
---|
2466 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2467 | |
---|
2468 | DO i = nxl, nxr+1 |
---|
2469 | DO j = nys-1, nyn |
---|
2470 | DO k = nzb, nzt+1 |
---|
2471 | IF ( BTEST( topo(k,j,i), 0 ) .OR. & |
---|
2472 | BTEST( topo(k,j+1,i), 0 ) ) & |
---|
2473 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
2474 | ENDDO |
---|
2475 | ENDDO |
---|
2476 | ENDDO |
---|
2477 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2478 | |
---|
2479 | ENDIF |
---|
2480 | ENDIF |
---|
2481 | |
---|
2482 | |
---|
2483 | END SUBROUTINE init_topo |
---|
2484 | |
---|
2485 | SUBROUTINE set_topo_flags(topo) |
---|
2486 | |
---|
2487 | USE control_parameters, & |
---|
2488 | ONLY: bc_lr_cyc, bc_ns_cyc, constant_flux_layer, land_surface, & |
---|
2489 | use_surface_fluxes, use_top_fluxes, urban_surface |
---|
2490 | |
---|
2491 | USE indices, & |
---|
2492 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nzb, & |
---|
2493 | nzt, wall_flags_0 |
---|
2494 | |
---|
2495 | USE kinds |
---|
2496 | |
---|
2497 | IMPLICIT NONE |
---|
2498 | |
---|
2499 | INTEGER(iwp) :: i !< index variable along x |
---|
2500 | INTEGER(iwp) :: j !< index variable along y |
---|
2501 | INTEGER(iwp) :: k !< index variable along z |
---|
2502 | |
---|
2503 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo !< input array for 3D topography and dummy array for setting "outer"-flags |
---|
2504 | |
---|
2505 | ALLOCATE( wall_flags_0(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
2506 | wall_flags_0 = 0 |
---|
2507 | ! |
---|
2508 | !-- Set-up topography flags. First, set flags only for s, u, v and w-grid. |
---|
2509 | !-- Further special flags will be set in following loops. |
---|
2510 | DO i = nxl, nxr |
---|
2511 | DO j = nys, nyn |
---|
2512 | DO k = nzb, nzt+1 |
---|
2513 | ! |
---|
2514 | !-- scalar grid |
---|
2515 | IF ( BTEST( topo(k,j,i), 0 ) ) & |
---|
2516 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 0 ) |
---|
2517 | ! |
---|
2518 | !-- u grid |
---|
2519 | IF ( BTEST( topo(k,j,i), 0 ) .AND. & |
---|
2520 | BTEST( topo(k,j,i-1), 0 ) ) & |
---|
2521 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 1 ) |
---|
2522 | ! |
---|
2523 | !-- v grid |
---|
2524 | IF ( BTEST( topo(k,j,i), 0 ) .AND. & |
---|
2525 | BTEST( topo(k,j-1,i), 0 ) ) & |
---|
2526 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 2 ) |
---|
2527 | |
---|
2528 | ENDDO |
---|
2529 | |
---|
2530 | DO k = nzb, nzt |
---|
2531 | ! |
---|
2532 | !-- w grid |
---|
2533 | IF ( BTEST( topo(k,j,i), 0 ) .AND. & |
---|
2534 | BTEST( topo(k+1,j,i), 0 ) ) & |
---|
2535 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 3 ) |
---|
2536 | ENDDO |
---|
2537 | wall_flags_0(nzt+1,j,i) = IBSET( wall_flags_0(nzt+1,j,i), 3 ) |
---|
2538 | |
---|
2539 | ENDDO |
---|
2540 | ENDDO |
---|
2541 | |
---|
2542 | CALL exchange_horiz_int( wall_flags_0, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2543 | ! |
---|
2544 | !-- Set outer array for scalars to mask near-surface grid points in |
---|
2545 | !-- production_e |
---|
2546 | DO i = nxl, nxr |
---|
2547 | DO j = nys, nyn |
---|
2548 | DO k = nzb, nzt+1 |
---|
2549 | IF ( BTEST( wall_flags_0(k,j-1,i), 0 ) .AND. & |
---|
2550 | BTEST( wall_flags_0(k,j+1,i), 0 ) .AND. & |
---|
2551 | BTEST( wall_flags_0(k,j,i-1), 0 ) .AND. & |
---|
2552 | BTEST( wall_flags_0(k,j-1,i-1), 0 ) .AND. & |
---|
2553 | BTEST( wall_flags_0(k,j+1,i-1), 0 ) .AND. & |
---|
2554 | BTEST( wall_flags_0(k,j-1,i+1), 0 ) .AND. & |
---|
2555 | BTEST( wall_flags_0(k,j+1,i+1), 0 ) ) & |
---|
2556 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 24 ) |
---|
2557 | ENDDO |
---|
2558 | ENDDO |
---|
2559 | ENDDO |
---|
2560 | ! |
---|
2561 | !-- Set further special flags |
---|
2562 | DO i = nxl, nxr |
---|
2563 | DO j = nys, nyn |
---|
2564 | DO k = nzb, nzt+1 |
---|
2565 | ! |
---|
2566 | !-- scalar grid, former nzb_diff_s_inner. |
---|
2567 | !-- Note, use this flag also to mask topography in diffusion_u and |
---|
2568 | !-- diffusion_v along the vertical direction. In case of |
---|
2569 | !-- use_surface_fluxes, fluxes are calculated via MOST, else, simple |
---|
2570 | !-- gradient approach is applied. Please note, in case of u- and v- |
---|
2571 | !-- diffuison, a small error is made at edges (on the east side for u, |
---|
2572 | !-- at the north side for v), since topography on scalar grid point |
---|
2573 | !-- is used instead of topography on u/v-grid. As number of topography grid |
---|
2574 | !-- points on uv-grid is different than s-grid, different number of |
---|
2575 | !-- surface elements would be required. In order to avoid this, |
---|
2576 | !-- treat edges (u(k,j,i+1)) simply by a gradient approach, i.e. these |
---|
2577 | !-- points are not masked within diffusion_u. Tests had shown that the |
---|
2578 | !-- effect on the flow is negligible. |
---|
2579 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
2580 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) ) & |
---|
2581 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 8 ) |
---|
2582 | ELSE |
---|
2583 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 8 ) |
---|
2584 | ENDIF |
---|
2585 | |
---|
2586 | ENDDO |
---|
2587 | ! |
---|
2588 | !-- Special flag to control vertical diffusion at model top - former |
---|
2589 | !-- nzt_diff |
---|
2590 | wall_flags_0(:,j,i) = IBSET( wall_flags_0(:,j,i), 9 ) |
---|
2591 | IF ( use_top_fluxes ) & |
---|
2592 | wall_flags_0(nzt+1,j,i) = IBCLR( wall_flags_0(nzt+1,j,i), 9 ) |
---|
2593 | |
---|
2594 | |
---|
2595 | DO k = nzb+1, nzt |
---|
2596 | ! |
---|
2597 | !-- Special flag on u grid, former nzb_u_inner + 1, required |
---|
2598 | !-- for disturb_field and initialization. Do not disturb directly at |
---|
2599 | !-- topography, as well as initialize u with zero one grid point outside |
---|
2600 | !-- of topography. |
---|
2601 | IF ( BTEST( wall_flags_0(k-1,j,i), 1 ) .AND. & |
---|
2602 | BTEST( wall_flags_0(k,j,i), 1 ) .AND. & |
---|
2603 | BTEST( wall_flags_0(k+1,j,i), 1 ) ) & |
---|
2604 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 20 ) |
---|
2605 | ! |
---|
2606 | !-- Special flag on v grid, former nzb_v_inner + 1, required |
---|
2607 | !-- for disturb_field and initialization. Do not disturb directly at |
---|
2608 | !-- topography, as well as initialize v with zero one grid point outside |
---|
2609 | !-- of topography. |
---|
2610 | IF ( BTEST( wall_flags_0(k-1,j,i), 2 ) .AND. & |
---|
2611 | BTEST( wall_flags_0(k,j,i), 2 ) .AND. & |
---|
2612 | BTEST( wall_flags_0(k+1,j,i), 2 ) ) & |
---|
2613 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 21 ) |
---|
2614 | ! |
---|
2615 | !-- Special flag on scalar grid, former nzb_s_inner+1. Used for |
---|
2616 | !-- lpm_sgs_tke |
---|
2617 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) .AND. & |
---|
2618 | BTEST( wall_flags_0(k-1,j,i), 0 ) .AND. & |
---|
2619 | BTEST( wall_flags_0(k+1,j,i), 0 ) ) & |
---|
2620 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 25 ) |
---|
2621 | ! |
---|
2622 | !-- Special flag on scalar grid, nzb_diff_s_outer - 1, required in |
---|
2623 | !-- in production_e |
---|
2624 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
2625 | IF ( BTEST( wall_flags_0(k,j,i), 24 ) .AND. & |
---|
2626 | BTEST( wall_flags_0(k-1,j,i), 24 ) .AND. & |
---|
2627 | BTEST( wall_flags_0(k+1,j,i), 0 ) ) & |
---|
2628 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 29 ) |
---|
2629 | ELSE |
---|
2630 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) ) & |
---|
2631 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 29 ) |
---|
2632 | ENDIF |
---|
2633 | ! |
---|
2634 | !-- Special flag on scalar grid, nzb_diff_s_outer - 1, required in |
---|
2635 | !-- in production_e |
---|
2636 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
2637 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) .AND. & |
---|
2638 | BTEST( wall_flags_0(k-1,j,i), 0 ) .AND. & |
---|
2639 | BTEST( wall_flags_0(k+1,j,i), 0 ) ) & |
---|
2640 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 30 ) |
---|
2641 | ELSE |
---|
2642 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) ) & |
---|
2643 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 30 ) |
---|
2644 | ENDIF |
---|
2645 | ENDDO |
---|
2646 | ! |
---|
2647 | !-- Flags indicating downward facing walls |
---|
2648 | DO k = nzb+1, nzt |
---|
2649 | ! |
---|
2650 | !-- Scalar grid |
---|
2651 | IF ( BTEST( wall_flags_0(k-1,j,i), 0 ) .AND. & |
---|
2652 | .NOT. BTEST( wall_flags_0(k,j,i), 0 ) ) & |
---|
2653 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 13 ) |
---|
2654 | ! |
---|
2655 | !-- Downward facing wall on u grid |
---|
2656 | IF ( BTEST( wall_flags_0(k-1,j,i), 1 ) .AND. & |
---|
2657 | .NOT. BTEST( wall_flags_0(k,j,i), 1 ) ) & |
---|
2658 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 15 ) |
---|
2659 | ! |
---|
2660 | !-- Downward facing wall on v grid |
---|
2661 | IF ( BTEST( wall_flags_0(k-1,j,i), 2 ) .AND. & |
---|
2662 | .NOT. BTEST( wall_flags_0(k,j,i), 2 ) ) & |
---|
2663 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 17 ) |
---|
2664 | ! |
---|
2665 | !-- Downward facing wall on w grid |
---|
2666 | IF ( BTEST( wall_flags_0(k-1,j,i), 3 ) .AND. & |
---|
2667 | .NOT. BTEST( wall_flags_0(k,j,i), 3 ) ) & |
---|
2668 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 19 ) |
---|
2669 | ENDDO |
---|
2670 | ! |
---|
2671 | !-- Flags indicating upward facing walls |
---|
2672 | DO k = nzb, nzt |
---|
2673 | ! |
---|
2674 | !-- Upward facing wall on scalar grid |
---|
2675 | IF ( .NOT. BTEST( wall_flags_0(k,j,i), 0 ) .AND. & |
---|
2676 | BTEST( wall_flags_0(k+1,j,i), 0 ) ) & |
---|
2677 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 12 ) |
---|
2678 | ! |
---|
2679 | !-- Upward facing wall on u grid |
---|
2680 | IF ( .NOT. BTEST( wall_flags_0(k,j,i), 1 ) .AND. & |
---|
2681 | BTEST( wall_flags_0(k+1,j,i), 1 ) ) & |
---|
2682 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 14 ) |
---|
2683 | |
---|
2684 | ! |
---|
2685 | !-- Upward facing wall on v grid |
---|
2686 | IF ( .NOT. BTEST( wall_flags_0(k,j,i), 2 ) .AND. & |
---|
2687 | BTEST( wall_flags_0(k+1,j,i), 2 ) ) & |
---|
2688 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 16 ) |
---|
2689 | |
---|
2690 | ! |
---|
2691 | !-- Upward facing wall on w grid |
---|
2692 | IF ( .NOT. BTEST( wall_flags_0(k,j,i), 3 ) .AND. & |
---|
2693 | BTEST( wall_flags_0(k+1,j,i), 3 ) ) & |
---|
2694 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 18 ) |
---|
2695 | ! |
---|
2696 | !-- Special flag on scalar grid, former nzb_s_inner |
---|
2697 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) .OR. & |
---|
2698 | BTEST( wall_flags_0(k,j,i), 12 ) .OR. & |
---|
2699 | BTEST( wall_flags_0(k,j,i), 13 ) ) & |
---|
2700 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 22 ) |
---|
2701 | ! |
---|
2702 | !-- Special flag on scalar grid, nzb_diff_s_inner - 1, required for |
---|
2703 | !-- flow_statistics |
---|
2704 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
2705 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) .AND. & |
---|
2706 | BTEST( wall_flags_0(k+1,j,i), 0 ) ) & |
---|
2707 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 23 ) |
---|
2708 | ELSE |
---|
2709 | IF ( BTEST( wall_flags_0(k,j,i), 22 ) ) & |
---|
2710 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 23 ) |
---|
2711 | ENDIF |
---|
2712 | |
---|
2713 | |
---|
2714 | ENDDO |
---|
2715 | wall_flags_0(nzt+1,j,i) = IBSET( wall_flags_0(nzt+1,j,i), 22 ) |
---|
2716 | wall_flags_0(nzt+1,j,i) = IBSET( wall_flags_0(nzt+1,j,i), 23 ) |
---|
2717 | ENDDO |
---|
2718 | ENDDO |
---|
2719 | ! |
---|
2720 | !-- Finally, set identification flags indicating natural terrain or buildings. |
---|
2721 | !-- Natural terrain grid points. |
---|
2722 | IF ( land_surface ) THEN |
---|
2723 | DO i = nxl, nxr |
---|
2724 | DO j = nys, nyn |
---|
2725 | DO k = nzb, nzt+1 |
---|
2726 | ! |
---|
2727 | !-- Natural terrain grid point |
---|
2728 | IF ( BTEST( topo(k,j,i), 1 ) ) & |
---|
2729 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 5 ) |
---|
2730 | ENDDO |
---|
2731 | ENDDO |
---|
2732 | ENDDO |
---|
2733 | ENDIF |
---|
2734 | ! |
---|
2735 | !-- Building grid points. |
---|
2736 | IF ( urban_surface ) THEN |
---|
2737 | DO i = nxl, nxr |
---|
2738 | DO j = nys, nyn |
---|
2739 | DO k = nzb, nzt+1 |
---|
2740 | IF ( BTEST( topo(k,j,i), 2 ) ) & |
---|
2741 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 6 ) |
---|
2742 | ENDDO |
---|
2743 | ENDDO |
---|
2744 | ENDDO |
---|
2745 | ENDIF |
---|
2746 | ! |
---|
2747 | !-- Exchange ghost points for wall flags |
---|
2748 | CALL exchange_horiz_int( wall_flags_0, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2749 | ! |
---|
2750 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
2751 | !-- boundary conditions for topography. |
---|
2752 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
2753 | IF ( nys == 0 ) THEN |
---|
2754 | DO i = 1, nbgp |
---|
2755 | wall_flags_0(:,nys-i,:) = wall_flags_0(:,nys,:) |
---|
2756 | ENDDO |
---|
2757 | ENDIF |
---|
2758 | IF ( nyn == ny ) THEN |
---|
2759 | DO i = 1, nbgp |
---|
2760 | wall_flags_0(:,nyn+i,:) = wall_flags_0(:,nyn,:) |
---|
2761 | ENDDO |
---|
2762 | ENDIF |
---|
2763 | ENDIF |
---|
2764 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
2765 | IF ( nxl == 0 ) THEN |
---|
2766 | DO i = 1, nbgp |
---|
2767 | wall_flags_0(:,:,nxl-i) = wall_flags_0(:,:,nxl) |
---|
2768 | ENDDO |
---|
2769 | ENDIF |
---|
2770 | IF ( nxr == nx ) THEN |
---|
2771 | DO i = 1, nbgp |
---|
2772 | wall_flags_0(:,:,nxr+i) = wall_flags_0(:,:,nxr) |
---|
2773 | ENDDO |
---|
2774 | ENDIF |
---|
2775 | ENDIF |
---|
2776 | |
---|
2777 | |
---|
2778 | END SUBROUTINE set_topo_flags |
---|
2779 | |
---|
2780 | |
---|
2781 | |
---|