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 1997-2020 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 4630 2020-07-30 14:54:34Z suehring $ |
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27 | ! In case of ASCII topography input flag grid points as terrain and building. |
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28 | ! |
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29 | ! 4601 2020-07-14 12:06:09Z suehring |
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30 | ! Minor formatting adjustments |
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31 | ! |
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32 | ! 4564 2020-06-12 14:03:36Z raasch |
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33 | ! Vertical nesting method of Huq et al. (2019) removed |
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34 | ! |
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35 | ! 4543 2020-05-20 14:12:22Z gronemeier |
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36 | ! Remove non-required check for canyon height |
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37 | ! |
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38 | ! 4507 2020-04-22 18:21:45Z gronemeier |
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39 | ! update origin_z with shifting height of orography (oro_min) |
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40 | ! |
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41 | ! 4457 2020-03-11 14:20:43Z raasch |
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42 | ! use statement for exchange horiz added, |
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43 | ! bugfix for call of exchange horiz 2d |
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44 | ! |
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45 | ! 4444 2020-03-05 15:59:50Z raasch |
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46 | ! bugfix: cpp-directives for serial mode added |
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47 | ! |
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48 | ! 4414 2020-02-19 20:16:04Z suehring |
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49 | ! - Remove deprecated topography arrays nzb_s_inner, nzb_u_inner, etc. |
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50 | ! - Move initialization of boundary conditions and multigrid into an extra |
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51 | ! module interface. |
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52 | ! |
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53 | ! 4386 2020-01-27 15:07:30Z Giersch |
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54 | ! Allocation statements, comments, naming of variables revised and _wp added to |
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55 | ! real type values |
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56 | ! |
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57 | ! 4360 2020-01-07 11:25:50Z suehring |
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58 | ! Revise error messages for generic tunnel setup. |
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59 | ! |
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60 | ! 4346 2019-12-18 11:55:56Z motisi |
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61 | ! Introduction of wall_flags_total_0, which currently sets bits based on static |
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62 | ! topography information used in wall_flags_static_0 |
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63 | ! |
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64 | ! 4340 2019-12-16 08:17:03Z Giersch |
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65 | ! Topography closed channel flow with symmetric boundaries implemented |
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66 | ! |
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67 | ! 4329 2019-12-10 15:46:36Z motisi |
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68 | ! Renamed wall_flags_0 to wall_flags_static_0 |
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69 | ! |
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70 | ! 4328 2019-12-09 18:53:04Z suehring |
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71 | ! Minor change in nzb_max computation. Commentation added. |
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72 | ! |
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73 | ! 4314 2019-11-29 10:29:20Z suehring |
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74 | ! Set additional topography flag 4 to mark topography grid points emerged |
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75 | ! from the filtering process. |
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76 | ! |
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77 | ! 4294 2019-11-13 18:34:16Z suehring |
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78 | ! Bugfix, always set bit 5 and 6 of wall_flags, indicating terrain- and |
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79 | ! building surfaces in all cases, in order to enable terrain-following output |
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80 | ! also when no land- or urban-surface model is applied. |
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81 | ! |
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82 | ! 4265 2019-10-15 16:16:24Z suehring |
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83 | ! Bugfix for last commit, exchange oro_max variable only when it is allocated |
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84 | ! (not necessarily the case when topography is input from ASCII file). |
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85 | ! |
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86 | ! 4245 2019-09-30 08:40:37Z pavelkrc |
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87 | ! Store oro_max (building z-offset) in 2D for building surfaces |
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88 | ! |
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89 | ! 4189 2019-08-26 16:19:38Z suehring |
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90 | ! - Add check for proper setting of namelist parameter topography |
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91 | ! - Set flag to indicate land surfaces in case no topography is provided |
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92 | ! |
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93 | ! 4182 2019-08-22 15:20:23Z scharf |
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94 | ! Corrected "Former revisions" section |
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95 | ! |
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96 | ! 4168 2019-08-16 13:50:17Z suehring |
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97 | ! Pre-calculate topography top index and store it on an array (replaces former |
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98 | ! functions get_topography_top_index) |
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99 | ! |
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100 | ! 4159 2019-08-15 13:31:35Z suehring |
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101 | ! Revision of topography processing. This was not consistent between 2D and 3D |
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102 | ! buildings. |
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103 | ! |
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104 | ! 4144 2019-08-06 09:11:47Z raasch |
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105 | ! relational operators .EQ., .NE., etc. replaced by ==, /=, etc. |
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106 | ! |
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107 | ! 4115 2019-07-24 12:50:49Z suehring |
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108 | ! Bugfix in setting near-surface flag 24, inidicating wall-bounded grid points |
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109 | ! |
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110 | ! 4110 2019-07-22 17:05:21Z suehring |
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111 | ! - Separate initialization of advection flags for momentum and scalars. |
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112 | ! - Change subroutine interface for ws_init_flags_scalar to pass boundary flags |
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113 | ! |
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114 | ! 4109 2019-07-22 17:00:34Z suehring |
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115 | ! Fix bad commit |
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116 | ! |
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117 | ! 3926 2019-04-23 12:56:42Z suehring |
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118 | ! Minor bugfix in building mapping when all building IDs in the model domain |
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119 | ! are missing |
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120 | ! |
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121 | ! 3857 2019-04-03 13:00:16Z knoop |
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122 | ! In projection of non-building 3D objects onto numerical grid remove |
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123 | ! dependency on building_type |
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124 | ! |
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125 | ! 3763 2019-02-25 17:33:49Z suehring |
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126 | ! Replace work-around for ghost point exchange of 1-byte arrays with specific |
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127 | ! routine as already done in other routines |
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128 | ! |
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129 | ! 3761 2019-02-25 15:31:42Z raasch |
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130 | ! unused variables removed |
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131 | ! |
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132 | ! 3661 2019-01-08 18:22:50Z suehring |
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133 | ! Remove setting of nzb_max to nzt at non-cyclic boundary PEs, instead, |
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134 | ! order degradation of advection scheme is handeled directly in advec_ws |
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135 | ! |
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136 | ! 3655 2019-01-07 16:51:22Z knoop |
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137 | ! Comment added |
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138 | ! |
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139 | ! Revision 1.1 1997/08/11 06:17:45 raasch |
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140 | ! Initial revision (Testversion) |
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141 | ! |
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142 | ! |
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143 | ! Description: |
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144 | ! -----------------------------------------------------------------------------! |
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145 | !> Creating grid depending constants |
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146 | !> @todo: Rearrange topo flag list |
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147 | !> @todo: reference 3D buildings on top of orography is not tested and may need |
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148 | !> further improvement for steep slopes |
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149 | !> @todo: Use more advanced setting of building type at filled holes |
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150 | !------------------------------------------------------------------------------! |
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151 | SUBROUTINE init_grid |
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152 | |
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153 | USE arrays_3d, & |
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154 | ONLY: dd2zu, ddzu, ddzu_pres, ddzw, dzu, dzw, x, xu, y, yv, zu, zw |
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155 | |
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156 | USE control_parameters, & |
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157 | ONLY: constant_flux_layer, dz, dz_max, dz_stretch_factor, & |
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158 | dz_stretch_factor_array, dz_stretch_level, dz_stretch_level_end,& |
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159 | dz_stretch_level_end_index, dz_stretch_level_start_index, & |
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160 | dz_stretch_level_start, ibc_uv_b, message_string, & |
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161 | number_stretch_level_end, & |
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162 | number_stretch_level_start, & |
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163 | ocean_mode, & |
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164 | psolver, & |
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165 | symmetry_flag, & |
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166 | topography, & |
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167 | use_surface_fluxes |
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168 | |
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169 | USE grid_variables, & |
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170 | ONLY: ddx, ddx2, ddy, ddy2, dx, dx2, dy, dy2, zu_s_inner, zw_w_inner |
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171 | |
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172 | USE indices, & |
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173 | ONLY: nbgp, & |
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174 | nx, & |
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175 | nxl, & |
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176 | nxlg, & |
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177 | nxr, & |
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178 | nxrg, & |
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179 | ny, & |
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180 | nyn, & |
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181 | nyng, & |
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182 | nys, & |
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183 | nysg, & |
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184 | nz, & |
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185 | nzb, & |
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186 | nzb_diff, & |
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187 | nzb_max, & |
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188 | nzt, & |
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189 | topo_top_ind, & |
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190 | topo_min_level |
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191 | |
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192 | USE kinds |
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193 | |
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194 | USE pegrid |
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195 | |
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196 | IMPLICIT NONE |
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197 | |
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198 | INTEGER(iwp) :: i !< index variable along x |
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199 | INTEGER(iwp) :: j !< index variable along y |
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200 | INTEGER(iwp) :: k !< index variable along z |
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201 | INTEGER(iwp) :: k_top !< topography top index on local PE |
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202 | INTEGER(iwp) :: n !< loop variable for stretching |
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203 | INTEGER(iwp) :: number_dz !< number of user-specified dz values |
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204 | INTEGER(iwp) :: nzb_local_max !< vertical grid index of maximum topography height |
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205 | INTEGER(iwp) :: nzb_local_min !< vertical grid index of minimum topography height |
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206 | |
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207 | INTEGER(iwp), DIMENSION(:,:,:), ALLOCATABLE :: topo !< input array for 3D topography and dummy array for setting "outer"-flags |
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208 | |
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209 | 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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210 | REAL(wp) :: dz_stretched !< stretched vertical grid spacing |
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211 | |
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212 | REAL(wp), DIMENSION(:), ALLOCATABLE :: min_dz_stretch_level_end !< Array that contains all minimum heights where the stretching can end |
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213 | |
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214 | |
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215 | ! |
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216 | !-- Calculation of horizontal array bounds including ghost layers |
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217 | nxlg = nxl - nbgp |
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218 | nxrg = nxr + nbgp |
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219 | nysg = nys - nbgp |
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220 | nyng = nyn + nbgp |
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221 | |
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222 | ! |
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223 | !-- Allocate grid arrays |
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224 | ALLOCATE( x(0:nx) ) |
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225 | ALLOCATE( xu(0:nx) ) |
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226 | |
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227 | DO i = 0, nx |
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228 | xu(i) = i * dx |
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229 | x(i) = i * dx + 0.5_wp * dx |
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230 | ENDDO |
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231 | |
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232 | ALLOCATE( y(0:ny) ) |
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233 | ALLOCATE( yv(0:ny) ) |
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234 | |
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235 | DO j = 0, ny |
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236 | yv(j) = j * dy |
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237 | y(j) = j * dy + 0.5_wp * dy |
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238 | ENDDO |
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239 | |
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240 | ALLOCATE( ddzu(1:nzt+1) ) |
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241 | ALLOCATE( ddzw(1:nzt+1) ) |
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242 | ALLOCATE( dd2zu(1:nzt) ) |
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243 | ALLOCATE( dzu(1:nzt+1) ) |
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244 | ALLOCATE( dzw(1:nzt+1) ) |
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245 | ALLOCATE( zu(nzb:nzt+1) ) |
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246 | ALLOCATE( zw(nzb:nzt+1) ) |
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247 | |
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248 | ! |
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249 | !-- For constructing an appropriate grid, the vertical grid spacing dz has to |
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250 | !-- be specified with a non-negative value in the parameter file |
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251 | IF ( dz(1) == -1.0_wp ) THEN |
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252 | message_string = 'missing dz' |
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253 | CALL message( 'init_grid', 'PA0200', 1, 2, 0, 6, 0 ) |
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254 | ELSEIF ( dz(1) <= 0.0_wp ) THEN |
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255 | WRITE( message_string, * ) 'dz=',dz(1),' <= 0.0' |
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256 | CALL message( 'init_grid', 'PA0201', 1, 2, 0, 6, 0 ) |
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257 | ENDIF |
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258 | |
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259 | ! |
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260 | !-- Initialize dz_stretch_level_start with the value of dz_stretch_level |
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261 | !-- if it was set by the user |
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262 | IF ( dz_stretch_level /= -9999999.9_wp ) THEN |
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263 | dz_stretch_level_start(1) = dz_stretch_level |
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264 | ENDIF |
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265 | |
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266 | ! |
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267 | !-- Determine number of dz values and stretching levels specified by the |
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268 | !-- user to allow right controlling of the stretching mechanism and to |
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269 | !-- perform error checks. The additional requirement that dz /= dz_max |
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270 | !-- for counting number of user-specified dz values is necessary. Otherwise |
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271 | !-- restarts would abort if the old stretching mechanism with dz_stretch_level |
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272 | !-- is used (Attention: The user is not allowed to specify a dz value equal |
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273 | !-- to the default of dz_max = 999.0). |
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274 | number_dz = COUNT( dz /= -1.0_wp .AND. dz /= dz_max) |
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275 | number_stretch_level_start = COUNT( dz_stretch_level_start /= & |
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276 | -9999999.9_wp ) |
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277 | number_stretch_level_end = COUNT( dz_stretch_level_end /= & |
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278 | 9999999.9_wp ) |
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279 | |
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280 | ! |
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281 | !-- The number of specified end levels +1 has to be the same as the number |
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282 | !-- of specified dz values |
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283 | IF ( number_dz /= number_stretch_level_end + 1 ) THEN |
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284 | WRITE( message_string, * ) 'The number of values for dz = ', & |
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285 | number_dz, 'has to be the same as& ', & |
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286 | 'the number of values for ', & |
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287 | 'dz_stretch_level_end + 1 = ', & |
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288 | number_stretch_level_end+1 |
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289 | CALL message( 'init_grid', 'PA0156', 1, 2, 0, 6, 0 ) |
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290 | ENDIF |
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291 | |
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292 | ! |
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293 | !-- The number of specified start levels has to be the same or one less than |
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294 | !-- the number of specified dz values |
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295 | IF ( number_dz /= number_stretch_level_start + 1 .AND. & |
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296 | number_dz /= number_stretch_level_start ) THEN |
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297 | WRITE( message_string, * ) 'The number of values for dz = ', & |
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298 | number_dz, 'has to be the same as or one ', & |
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299 | 'more than& the number of values for ', & |
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300 | 'dz_stretch_level_start = ', & |
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301 | number_stretch_level_start |
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302 | CALL message( 'init_grid', 'PA0211', 1, 2, 0, 6, 0 ) |
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303 | ENDIF |
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304 | |
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305 | !-- The number of specified start levels has to be the same or one more than |
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306 | !-- the number of specified end levels |
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307 | IF ( number_stretch_level_start /= number_stretch_level_end + 1 .AND. & |
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308 | number_stretch_level_start /= number_stretch_level_end ) THEN |
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309 | WRITE( message_string, * ) 'The number of values for ', & |
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310 | 'dz_stretch_level_start = ', & |
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311 | dz_stretch_level_start, 'has to be the ', & |
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312 | 'same or one more than& the number of ', & |
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313 | 'values for dz_stretch_level_end = ', & |
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314 | number_stretch_level_end |
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315 | CALL message( 'init_grid', 'PA0216', 1, 2, 0, 6, 0 ) |
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316 | ENDIF |
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317 | |
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318 | ! |
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319 | !-- Initialize dz for the free atmosphere with the value of dz_max |
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320 | IF ( dz(number_stretch_level_start+1) == -1.0_wp .AND. & |
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321 | number_stretch_level_start /= 0 ) THEN |
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322 | dz(number_stretch_level_start+1) = dz_max |
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323 | ENDIF |
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324 | |
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325 | ! |
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326 | !-- Initialize the stretching factor if (infinitely) stretching in the free |
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327 | !-- atmosphere is desired (dz_stretch_level_end was not specified for the |
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328 | !-- free atmosphere) |
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329 | IF ( number_stretch_level_start == number_stretch_level_end + 1 ) THEN |
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330 | dz_stretch_factor_array(number_stretch_level_start) = & |
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331 | dz_stretch_factor |
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332 | ENDIF |
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333 | |
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334 | ! |
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335 | !-- Allocation of arrays for stretching |
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336 | ALLOCATE( min_dz_stretch_level_end(number_stretch_level_start) ) |
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337 | |
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338 | ! |
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339 | !-- Define the vertical grid levels. Start with atmosphere branch |
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340 | IF ( .NOT. ocean_mode ) THEN |
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341 | |
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342 | ! |
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343 | !-- The stretching region has to be large enough to allow for a smooth |
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344 | !-- transition between two different grid spacings. The number 4 is an |
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345 | !-- empirical value |
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346 | DO n = 1, number_stretch_level_start |
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347 | min_dz_stretch_level_end(n) = dz_stretch_level_start(n) + & |
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348 | 4 * MAX( dz(n),dz(n+1) ) |
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349 | ENDDO |
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350 | |
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351 | IF ( ANY( min_dz_stretch_level_end(1:number_stretch_level_start) > & |
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352 | dz_stretch_level_end(1:number_stretch_level_start) ) ) THEN |
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353 | message_string= 'Each dz_stretch_level_end has to be larger ' // & |
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354 | 'than its corresponding value for &' // & |
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355 | 'dz_stretch_level_start + 4*MAX(dz(n),dz(n+1)) '// & |
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356 | 'to allow for smooth grid stretching' |
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357 | CALL message( 'init_grid', 'PA0224', 1, 2, 0, 6, 0 ) |
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358 | ENDIF |
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359 | |
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360 | ! |
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361 | !-- Stretching must not be applied within the surface layer |
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362 | !-- (first two grid points). For the default case dz_stretch_level_start |
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363 | !-- is negative. Therefore the absolut value is checked here. |
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364 | IF ( ANY( ABS( dz_stretch_level_start ) <= dz(1) * 1.5_wp ) ) THEN |
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365 | WRITE( message_string, * ) 'Each dz_stretch_level_start has to be ',& |
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366 | 'larger than ', dz(1) * 1.5 |
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367 | CALL message( 'init_grid', 'PA0226', 1, 2, 0, 6, 0 ) |
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368 | ENDIF |
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369 | |
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370 | ! |
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371 | !-- The stretching has to start and end on a grid level. Therefore |
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372 | !-- user-specified values are mapped to the next lowest level. The |
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373 | !-- calculation of the first level is realized differently just because of |
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374 | !-- historical reasons (the advanced/new stretching mechanism was realized |
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375 | !-- in a way that results don't change if the old parameters |
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376 | !-- dz_stretch_level, dz_stretch_factor and dz_max are used) |
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377 | IF ( number_stretch_level_start /= 0 ) THEN |
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378 | dz_stretch_level_start(1) = INT( (dz_stretch_level_start(1) - & |
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379 | dz(1)/2.0) / dz(1) ) & |
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380 | * dz(1) + dz(1)/2.0 |
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381 | ENDIF |
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382 | |
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383 | IF ( number_stretch_level_start > 1 ) THEN |
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384 | DO n = 2, number_stretch_level_start |
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385 | dz_stretch_level_start(n) = INT( dz_stretch_level_start(n) / & |
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386 | dz(n) ) * dz(n) |
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387 | ENDDO |
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388 | ENDIF |
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389 | |
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390 | IF ( number_stretch_level_end /= 0 ) THEN |
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391 | DO n = 1, number_stretch_level_end |
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392 | dz_stretch_level_end(n) = INT( dz_stretch_level_end(n) / & |
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393 | dz(n+1) ) * dz(n+1) |
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394 | ENDDO |
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395 | ENDIF |
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396 | |
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397 | ! |
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398 | !-- Determine stretching factor if necessary |
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399 | IF ( number_stretch_level_end >= 1 ) THEN |
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400 | CALL calculate_stretching_factor( number_stretch_level_end ) |
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401 | ENDIF |
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402 | |
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403 | ! |
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404 | !-- Grid for atmosphere with surface at z=0 (k=0, w-grid). |
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405 | !-- First compute the u- and v-levels. In case of dirichlet bc for u and v |
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406 | !-- the first u/v- and w-level (k=0) are defined at same height (z=0). |
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407 | !-- The second u-level (k=1) corresponds to the top of the |
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408 | !-- surface layer. In case of symmetric boundaries (closed channel flow), |
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409 | !-- the first grid point is always at z=0. |
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410 | IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 .OR. & |
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411 | topography == 'closed_channel' ) THEN |
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412 | zu(0) = 0.0_wp |
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413 | ELSE |
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414 | zu(0) = - dz(1) * 0.5_wp |
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415 | ENDIF |
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416 | |
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417 | zu(1) = dz(1) * 0.5_wp |
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418 | |
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419 | ! |
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420 | !-- Determine u and v height levels considering the possibility of grid |
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421 | !-- stretching in several heights. |
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422 | n = 1 |
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423 | dz_stretch_level_start_index = nzt+1 |
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424 | dz_stretch_level_end_index = nzt+1 |
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425 | dz_stretched = dz(1) |
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426 | |
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427 | !-- The default value of dz_stretch_level_start is negative, thus the first |
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428 | !-- condition is true even if no stretching shall be applied. Hence, the |
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429 | !-- second condition is also necessary. |
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430 | DO k = 2, nzt+1-symmetry_flag |
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431 | IF ( dz_stretch_level_start(n) <= zu(k-1) .AND. & |
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432 | dz_stretch_level_start(n) /= -9999999.9_wp ) THEN |
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433 | dz_stretched = dz_stretched * dz_stretch_factor_array(n) |
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434 | |
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435 | IF ( dz(n) > dz(n+1) ) THEN |
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436 | dz_stretched = MAX( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (higher) dz |
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437 | ELSE |
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438 | dz_stretched = MIN( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (lower) dz |
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439 | ENDIF |
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440 | |
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441 | IF ( dz_stretch_level_start_index(n) == nzt+1 ) & |
---|
442 | dz_stretch_level_start_index(n) = k-1 |
---|
443 | |
---|
444 | ENDIF |
---|
445 | |
---|
446 | zu(k) = zu(k-1) + dz_stretched |
---|
447 | |
---|
448 | ! |
---|
449 | !-- Make sure that the stretching ends exactly at dz_stretch_level_end |
---|
450 | dz_level_end = ABS( zu(k) - dz_stretch_level_end(n) ) |
---|
451 | |
---|
452 | IF ( dz_level_end < dz(n+1)/3.0 ) THEN |
---|
453 | zu(k) = dz_stretch_level_end(n) |
---|
454 | dz_stretched = dz(n+1) |
---|
455 | dz_stretch_level_end_index(n) = k |
---|
456 | n = n + 1 |
---|
457 | ENDIF |
---|
458 | ENDDO |
---|
459 | |
---|
460 | ! |
---|
461 | !-- If a closed channel flow is simulated, make sure that grid structure is |
---|
462 | !-- the same for both bottom and top boundary. (Hint: Using a different dz |
---|
463 | !-- at the bottom and at the top makes no sense due to symmetric boundaries |
---|
464 | !-- where dz should be equal. Therefore, different dz at the bottom and top |
---|
465 | !-- causes an abort (see check_parameters).) |
---|
466 | IF ( topography == 'closed_channel' ) THEN |
---|
467 | zu(nzt+1) = zu(nzt) + dz(1) * 0.5_wp |
---|
468 | ENDIF |
---|
469 | |
---|
470 | ! |
---|
471 | !-- Compute the w-levels. They are always staggered half-way between the |
---|
472 | !-- corresponding u-levels. In case of dirichlet bc for u and v at the |
---|
473 | !-- ground the first u- and w-level (k=0) are defined at same height (z=0). |
---|
474 | !-- Per default, the top w-level is extrapolated linearly. In case of |
---|
475 | !-- a closed channel flow, zu(nzt+1) and zw(nzt) must be set explicitely. |
---|
476 | !-- (Hint: Using a different dz at the bottom and at the top makes no sense |
---|
477 | !-- due to symmetric boundaries where dz should be equal. Therefore, |
---|
478 | !-- different dz at the bottom and top causes an abort (see |
---|
479 | !-- check_parameters).) |
---|
480 | zw(0) = 0.0_wp |
---|
481 | DO k = 1, nzt-symmetry_flag |
---|
482 | zw(k) = ( zu(k) + zu(k+1) ) * 0.5_wp |
---|
483 | ENDDO |
---|
484 | IF ( topography == 'closed_channel' ) THEN |
---|
485 | zw(nzt) = zw(nzt-1) + dz(1) |
---|
486 | zw(nzt+1) = zw(nzt) + dz(1) |
---|
487 | ELSE |
---|
488 | zw(nzt+1) = zw(nzt) + 2.0_wp * ( zu(nzt+1) - zw(nzt) ) |
---|
489 | ENDIF |
---|
490 | |
---|
491 | ELSE !ocean branch |
---|
492 | |
---|
493 | ! |
---|
494 | !-- The stretching region has to be large enough to allow for a smooth |
---|
495 | !-- transition between two different grid spacings. The number 4 is an |
---|
496 | !-- empirical value |
---|
497 | DO n = 1, number_stretch_level_start |
---|
498 | min_dz_stretch_level_end(n) = dz_stretch_level_start(n) - & |
---|
499 | 4 * MAX( dz(n),dz(n+1) ) |
---|
500 | ENDDO |
---|
501 | |
---|
502 | IF ( ANY( min_dz_stretch_level_end (1:number_stretch_level_start) < & |
---|
503 | dz_stretch_level_end(1:number_stretch_level_start) ) ) THEN |
---|
504 | message_string= 'Each dz_stretch_level_end has to be less ' // & |
---|
505 | 'than its corresponding value for &' // & |
---|
506 | 'dz_stretch_level_start - 4*MAX(dz(n),dz(n+1)) '//& |
---|
507 | 'to allow for smooth grid stretching' |
---|
508 | CALL message( 'init_grid', 'PA0224', 1, 2, 0, 6, 0 ) |
---|
509 | ENDIF |
---|
510 | |
---|
511 | ! |
---|
512 | !-- Stretching must not be applied close to the surface (last two grid |
---|
513 | !-- points). For the default case dz_stretch_level_start is negative. |
---|
514 | IF ( ANY( dz_stretch_level_start >= - dz(1) * 1.5_wp ) ) THEN |
---|
515 | WRITE( message_string, * ) 'Each dz_stretch_level_start has to be ',& |
---|
516 | 'less than ', -dz(1) * 1.5 |
---|
517 | CALL message( 'init_grid', 'PA0226', 1, 2, 0, 6, 0 ) |
---|
518 | ENDIF |
---|
519 | |
---|
520 | ! |
---|
521 | !-- The stretching has to start and end on a grid level. Therefore |
---|
522 | !-- user-specified values are mapped to the next highest level. The |
---|
523 | !-- calculation of the first level is realized differently just because of |
---|
524 | !-- historical reasons (the advanced/new stretching mechanism was realized |
---|
525 | !-- in a way that results don't change if the old parameters |
---|
526 | !-- dz_stretch_level, dz_stretch_factor and dz_max are used) |
---|
527 | IF ( number_stretch_level_start /= 0 ) THEN |
---|
528 | dz_stretch_level_start(1) = INT( (dz_stretch_level_start(1) + & |
---|
529 | dz(1)/2.0) / dz(1) ) & |
---|
530 | * dz(1) - dz(1)/2.0 |
---|
531 | ENDIF |
---|
532 | |
---|
533 | IF ( number_stretch_level_start > 1 ) THEN |
---|
534 | DO n = 2, number_stretch_level_start |
---|
535 | dz_stretch_level_start(n) = INT( dz_stretch_level_start(n) / & |
---|
536 | dz(n) ) * dz(n) |
---|
537 | ENDDO |
---|
538 | ENDIF |
---|
539 | |
---|
540 | IF ( number_stretch_level_end /= 0 ) THEN |
---|
541 | DO n = 1, number_stretch_level_end |
---|
542 | dz_stretch_level_end(n) = INT( dz_stretch_level_end(n) / & |
---|
543 | dz(n+1) ) * dz(n+1) |
---|
544 | ENDDO |
---|
545 | ENDIF |
---|
546 | |
---|
547 | ! |
---|
548 | !-- Determine stretching factor if necessary |
---|
549 | IF ( number_stretch_level_end >= 1 ) THEN |
---|
550 | CALL calculate_stretching_factor( number_stretch_level_end ) |
---|
551 | ENDIF |
---|
552 | |
---|
553 | ! |
---|
554 | !-- Grid for ocean with free water surface is at k=nzt (w-grid). |
---|
555 | !-- In case of neumann bc at the ground the first first u-level (k=0) lies |
---|
556 | !-- below the first w-level (k=0). In case of dirichlet bc the first u- and |
---|
557 | !-- w-level are defined at same height, but staggered from the second level. |
---|
558 | !-- The second u-level (k=1) corresponds to the top of the surface layer. |
---|
559 | !-- z values are negative starting from z=0 (surface) |
---|
560 | zu(nzt+1) = dz(1) * 0.5_wp |
---|
561 | zu(nzt) = - dz(1) * 0.5_wp |
---|
562 | |
---|
563 | ! |
---|
564 | !-- Determine u and v height levels considering the possibility of grid |
---|
565 | !-- stretching in several heights. |
---|
566 | n = 1 |
---|
567 | dz_stretch_level_start_index = 0 |
---|
568 | dz_stretch_level_end_index = 0 |
---|
569 | dz_stretched = dz(1) |
---|
570 | |
---|
571 | DO k = nzt-1, 0, -1 |
---|
572 | |
---|
573 | IF ( dz_stretch_level_start(n) >= zu(k+1) ) THEN |
---|
574 | dz_stretched = dz_stretched * dz_stretch_factor_array(n) |
---|
575 | |
---|
576 | IF ( dz(n) > dz(n+1) ) THEN |
---|
577 | dz_stretched = MAX( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (higher) dz |
---|
578 | ELSE |
---|
579 | dz_stretched = MIN( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (lower) dz |
---|
580 | ENDIF |
---|
581 | |
---|
582 | IF ( dz_stretch_level_start_index(n) == 0 ) & |
---|
583 | dz_stretch_level_start_index(n) = k+1 |
---|
584 | |
---|
585 | ENDIF |
---|
586 | |
---|
587 | zu(k) = zu(k+1) - dz_stretched |
---|
588 | |
---|
589 | ! |
---|
590 | !-- Make sure that the stretching ends exactly at dz_stretch_level_end |
---|
591 | dz_level_end = ABS( zu(k) - dz_stretch_level_end(n) ) |
---|
592 | |
---|
593 | IF ( dz_level_end < dz(n+1)/3.0 ) THEN |
---|
594 | zu(k) = dz_stretch_level_end(n) |
---|
595 | dz_stretched = dz(n+1) |
---|
596 | dz_stretch_level_end_index(n) = k |
---|
597 | n = n + 1 |
---|
598 | ENDIF |
---|
599 | ENDDO |
---|
600 | |
---|
601 | ! |
---|
602 | !-- Compute the w-levels. They are always staggered half-way between the |
---|
603 | !-- corresponding u-levels, except in case of dirichlet bc for u and v |
---|
604 | !-- at the ground. In this case the first u- and w-level are defined at |
---|
605 | !-- same height. The top w-level (nzt+1) is not used but set for |
---|
606 | !-- consistency, since w and all scalar variables are defined up tp nzt+1. |
---|
607 | zw(nzt+1) = dz(1) |
---|
608 | zw(nzt) = 0.0_wp |
---|
609 | DO k = 0, nzt |
---|
610 | zw(k) = ( zu(k) + zu(k+1) ) * 0.5_wp |
---|
611 | ENDDO |
---|
612 | |
---|
613 | ! |
---|
614 | !-- In case of dirichlet bc for u and v the first u- and w-level are defined |
---|
615 | !-- at same height. |
---|
616 | IF ( ibc_uv_b == 0 ) THEN |
---|
617 | zu(0) = zw(0) |
---|
618 | ENDIF |
---|
619 | |
---|
620 | ENDIF !End of defining the vertical grid levels |
---|
621 | |
---|
622 | ! |
---|
623 | !-- Compute grid lengths. |
---|
624 | DO k = 1, nzt+1 |
---|
625 | dzu(k) = zu(k) - zu(k-1) |
---|
626 | ddzu(k) = 1.0_wp / dzu(k) |
---|
627 | dzw(k) = zw(k) - zw(k-1) |
---|
628 | ddzw(k) = 1.0_wp / dzw(k) |
---|
629 | ENDDO |
---|
630 | |
---|
631 | DO k = 1, nzt |
---|
632 | dd2zu(k) = 1.0_wp / ( dzu(k) + dzu(k+1) ) |
---|
633 | ENDDO |
---|
634 | |
---|
635 | ! |
---|
636 | !-- The FFT- SOR-pressure solvers assume grid spacings of a staggered grid |
---|
637 | !-- everywhere. For the actual grid, the grid spacing at the lowest level |
---|
638 | !-- is only dz/2, but should be dz. Therefore, an additional array |
---|
639 | !-- containing with appropriate grid information is created for these |
---|
640 | !-- solvers. |
---|
641 | IF ( psolver(1:9) /= 'multigrid' ) THEN |
---|
642 | ALLOCATE( ddzu_pres(1:nzt+1) ) |
---|
643 | ddzu_pres = ddzu |
---|
644 | ddzu_pres(1) = ddzu_pres(2) ! change for lowest level |
---|
645 | ENDIF |
---|
646 | |
---|
647 | ! |
---|
648 | !-- Compute the reciprocal values of the horizontal grid lengths. |
---|
649 | ddx = 1.0_wp / dx |
---|
650 | ddy = 1.0_wp / dy |
---|
651 | dx2 = dx * dx |
---|
652 | dy2 = dy * dy |
---|
653 | ddx2 = 1.0_wp / dx2 |
---|
654 | ddy2 = 1.0_wp / dy2 |
---|
655 | |
---|
656 | ! |
---|
657 | !-- Allocate 3D array to set topography |
---|
658 | ALLOCATE( topo(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
659 | topo = 0 |
---|
660 | ! |
---|
661 | !-- Initialize topography by generic topography or read topography from file. |
---|
662 | CALL init_topo( topo ) |
---|
663 | ! |
---|
664 | !-- Set flags to mask topography on the grid. |
---|
665 | CALL set_topo_flags( topo ) |
---|
666 | |
---|
667 | ! |
---|
668 | !-- Determine the maximum level of topography. It is used for |
---|
669 | !-- steering the degradation of order of the applied advection scheme, |
---|
670 | !-- as well in the lpm. |
---|
671 | k_top = 0 |
---|
672 | DO i = nxl, nxr |
---|
673 | DO j = nys, nyn |
---|
674 | DO k = nzb, nzt + 1 |
---|
675 | k_top = MAX( k_top, MERGE( k, 0, .NOT. BTEST( topo(k,j,i), 0 ) ) ) |
---|
676 | ENDDO |
---|
677 | ENDDO |
---|
678 | ENDDO |
---|
679 | #if defined( __parallel ) |
---|
680 | CALL MPI_ALLREDUCE( k_top, nzb_max, 1, MPI_INTEGER, & |
---|
681 | MPI_MAX, comm2d, ierr ) |
---|
682 | #else |
---|
683 | nzb_max = k_top |
---|
684 | #endif |
---|
685 | ! |
---|
686 | !-- Increment nzb_max by 1 in order to allow for proper diverengence correction. |
---|
687 | !-- Further, in case topography extents up to the model top, limit to nzt. |
---|
688 | nzb_max = MIN( nzb_max+1, nzt ) |
---|
689 | ! |
---|
690 | !-- Determine minimum index of topography. Usually, this will be nzb. In case |
---|
691 | !-- there is elevated topography, however, the lowest topography will be higher. |
---|
692 | !-- This index is e.g. used to calculate mean first-grid point atmosphere |
---|
693 | !-- temperature, surface pressure and density, etc. . |
---|
694 | topo_min_level = 0 |
---|
695 | #if defined( __parallel ) |
---|
696 | CALL MPI_ALLREDUCE( MINVAL( topo_top_ind(nys:nyn,nxl:nxr,0) ), & |
---|
697 | topo_min_level, 1, MPI_INTEGER, MPI_MIN, comm2d, ierr ) |
---|
698 | #else |
---|
699 | topo_min_level = MINVAL( topo_top_ind(nys:nyn,nxl:nxr,0) ) |
---|
700 | #endif |
---|
701 | |
---|
702 | ! |
---|
703 | !-- Check topography for consistency with model domain. Therefore, use |
---|
704 | !-- maximum and minium topography-top indices. Note, minimum topography top |
---|
705 | !-- index is already calculated. |
---|
706 | IF ( TRIM( topography ) /= 'flat' ) THEN |
---|
707 | #if defined( __parallel ) |
---|
708 | CALL MPI_ALLREDUCE( MAXVAL( topo_top_ind(nys:nyn,nxl:nxr,0) ), & |
---|
709 | nzb_local_max, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr ) |
---|
710 | #else |
---|
711 | nzb_local_max = MAXVAL( topo_top_ind(nys:nyn,nxl:nxr,0) ) |
---|
712 | #endif |
---|
713 | nzb_local_min = topo_min_level |
---|
714 | ! |
---|
715 | !-- Consistency checks |
---|
716 | IF ( nzb_local_min < 0 .OR. nzb_local_max > nz + 1 ) THEN |
---|
717 | WRITE( message_string, * ) 'nzb_local values are outside the', & |
---|
718 | ' model domain', & |
---|
719 | '&MINVAL( nzb_local ) = ', nzb_local_min, & |
---|
720 | '&MAXVAL( nzb_local ) = ', nzb_local_max |
---|
721 | CALL message( 'init_grid', 'PA0210', 1, 2, 0, 6, 0 ) |
---|
722 | ENDIF |
---|
723 | ENDIF |
---|
724 | ! |
---|
725 | !-- Define vertical gridpoint from (or to) which on the usual finite difference |
---|
726 | !-- form (which does not use surface fluxes) is applied |
---|
727 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
728 | nzb_diff = nzb + 2 |
---|
729 | ELSE |
---|
730 | nzb_diff = nzb + 1 |
---|
731 | ENDIF |
---|
732 | |
---|
733 | IF ( TRIM( topography ) /= 'flat' ) THEN |
---|
734 | ! |
---|
735 | !-- Allocate and set the arrays containing the topography height (for output |
---|
736 | !-- reasons only). |
---|
737 | IF ( nxr == nx .AND. nyn /= ny ) THEN |
---|
738 | ALLOCATE( zu_s_inner(nxl:nxr+1,nys:nyn), & |
---|
739 | zw_w_inner(nxl:nxr+1,nys:nyn) ) |
---|
740 | ELSEIF ( nxr /= nx .AND. nyn == ny ) THEN |
---|
741 | ALLOCATE( zu_s_inner(nxl:nxr,nys:nyn+1), & |
---|
742 | zw_w_inner(nxl:nxr,nys:nyn+1) ) |
---|
743 | ELSEIF ( nxr == nx .AND. nyn == ny ) THEN |
---|
744 | ALLOCATE( zu_s_inner(nxl:nxr+1,nys:nyn+1), & |
---|
745 | zw_w_inner(nxl:nxr+1,nys:nyn+1) ) |
---|
746 | ELSE |
---|
747 | ALLOCATE( zu_s_inner(nxl:nxr,nys:nyn), & |
---|
748 | zw_w_inner(nxl:nxr,nys:nyn) ) |
---|
749 | ENDIF |
---|
750 | |
---|
751 | zu_s_inner = 0.0_wp |
---|
752 | zw_w_inner = 0.0_wp |
---|
753 | ! |
---|
754 | !-- Determine local topography height on scalar and w-grid. Note, setting |
---|
755 | !-- lateral boundary values is not necessary, realized via wall_flags_static_0 |
---|
756 | !-- array. Further, please note that loop bounds are different from |
---|
757 | !-- nxl to nxr and nys to nyn on south and right model boundary, hence, |
---|
758 | !-- use intrinsic lbound and ubound functions to infer array bounds. |
---|
759 | DO i = LBOUND(zu_s_inner, 1), UBOUND(zu_s_inner, 1) |
---|
760 | DO j = LBOUND(zu_s_inner, 2), UBOUND(zu_s_inner, 2) |
---|
761 | ! |
---|
762 | !-- Topography height on scalar grid. Therefore, determine index of |
---|
763 | !-- upward-facing surface element on scalar grid. |
---|
764 | zu_s_inner(i,j) = zu(topo_top_ind(j,i,0)) |
---|
765 | ! |
---|
766 | !-- Topography height on w grid. Therefore, determine index of |
---|
767 | !-- upward-facing surface element on w grid. |
---|
768 | zw_w_inner(i,j) = zw(topo_top_ind(j,i,3)) |
---|
769 | ENDDO |
---|
770 | ENDDO |
---|
771 | ENDIF |
---|
772 | |
---|
773 | END SUBROUTINE init_grid |
---|
774 | |
---|
775 | |
---|
776 | ! Description: |
---|
777 | ! -----------------------------------------------------------------------------! |
---|
778 | !> Calculation of the stretching factor through an iterative method. Ideas were |
---|
779 | !> taken from the paper "Regional stretched grid generation and its application |
---|
780 | !> to the NCAR RegCM (1999)". Normally, no analytic solution exists because the |
---|
781 | !> system of equations has two variables (r,l) but four requirements |
---|
782 | !> (l=integer, r=[0,88;1,2], Eq(6), Eq(5) starting from index j=1) which |
---|
783 | !> results into an overdetermined system. |
---|
784 | !------------------------------------------------------------------------------! |
---|
785 | SUBROUTINE calculate_stretching_factor( number_end ) |
---|
786 | |
---|
787 | USE control_parameters, & |
---|
788 | ONLY: dz, dz_stretch_factor_array, & |
---|
789 | dz_stretch_level_end, dz_stretch_level_start, message_string |
---|
790 | |
---|
791 | USE kinds |
---|
792 | |
---|
793 | IMPLICIT NONE |
---|
794 | |
---|
795 | INTEGER(iwp) :: iterations !< number of iterations until stretch_factor_lower/upper_limit is reached |
---|
796 | INTEGER(iwp) :: l_rounded !< after l_rounded grid levels dz(n) is strechted to dz(n+1) with stretch_factor_2 |
---|
797 | INTEGER(iwp) :: n !< loop variable for stretching |
---|
798 | |
---|
799 | INTEGER(iwp), INTENT(IN) :: number_end !< number of user-specified end levels for stretching |
---|
800 | |
---|
801 | REAL(wp) :: delta_l !< absolute difference between l and l_rounded |
---|
802 | REAL(wp) :: delta_stretch_factor !< absolute difference between stretch_factor_1 and stretch_factor_2 |
---|
803 | REAL(wp) :: delta_total_new !< sum of delta_l and delta_stretch_factor for the next iteration (should be as small as possible) |
---|
804 | REAL(wp) :: delta_total_old !< sum of delta_l and delta_stretch_factor for the last iteration |
---|
805 | REAL(wp) :: distance !< distance between dz_stretch_level_start and dz_stretch_level_end (stretching region) |
---|
806 | REAL(wp) :: l !< value that fulfil Eq. (5) in the paper mentioned above together with stretch_factor_1 exactly |
---|
807 | REAL(wp) :: numerator !< numerator of the quotient |
---|
808 | REAL(wp) :: stretch_factor_1 !< stretching factor that fulfil Eq. (5) togehter with l exactly |
---|
809 | REAL(wp) :: stretch_factor_2 !< stretching factor that fulfil Eq. (6) togehter with l_rounded exactly |
---|
810 | |
---|
811 | REAL(wp) :: dz_stretch_factor_array_2(9) = 1.08_wp !< Array that contains all stretch_factor_2 that belongs to stretch_factor_1 |
---|
812 | |
---|
813 | REAL(wp), PARAMETER :: stretch_factor_interval = 1.0E-06_wp !< interval for sampling possible stretching factors |
---|
814 | REAL(wp), PARAMETER :: stretch_factor_lower_limit = 0.88_wp !< lowest possible stretching factor |
---|
815 | REAL(wp), PARAMETER :: stretch_factor_upper_limit = 1.12_wp !< highest possible stretching factor |
---|
816 | |
---|
817 | |
---|
818 | l = 0 |
---|
819 | DO n = 1, number_end |
---|
820 | |
---|
821 | iterations = 1 |
---|
822 | stretch_factor_1 = 1.0_wp |
---|
823 | stretch_factor_2 = 1.0_wp |
---|
824 | delta_total_old = 1.0_wp |
---|
825 | |
---|
826 | ! |
---|
827 | !-- First branch for stretching from rough to fine |
---|
828 | IF ( dz(n) > dz(n+1) ) THEN |
---|
829 | DO WHILE ( stretch_factor_1 >= stretch_factor_lower_limit ) |
---|
830 | |
---|
831 | stretch_factor_1 = 1.0_wp - iterations * stretch_factor_interval |
---|
832 | distance = ABS( dz_stretch_level_end(n) - & |
---|
833 | dz_stretch_level_start(n) ) |
---|
834 | numerator = distance*stretch_factor_1/dz(n) + & |
---|
835 | stretch_factor_1 - distance/dz(n) |
---|
836 | |
---|
837 | IF ( numerator > 0.0_wp ) THEN |
---|
838 | l = LOG( numerator ) / LOG( stretch_factor_1 ) - 1.0_wp |
---|
839 | l_rounded = NINT( l ) |
---|
840 | delta_l = ABS( l_rounded - l ) / l |
---|
841 | ENDIF |
---|
842 | |
---|
843 | stretch_factor_2 = EXP( LOG( dz(n+1)/dz(n) ) / (l_rounded) ) |
---|
844 | |
---|
845 | delta_stretch_factor = ABS( stretch_factor_1 - & |
---|
846 | stretch_factor_2 ) / & |
---|
847 | stretch_factor_2 |
---|
848 | |
---|
849 | delta_total_new = delta_l + delta_stretch_factor |
---|
850 | |
---|
851 | ! |
---|
852 | !-- stretch_factor_1 is taken to guarantee that the stretching |
---|
853 | !-- procedure ends as close as possible to dz_stretch_level_end. |
---|
854 | !-- stretch_factor_2 would guarantee that the stretched dz(n) is |
---|
855 | !-- equal to dz(n+1) after l_rounded grid levels. |
---|
856 | IF (delta_total_new < delta_total_old) THEN |
---|
857 | dz_stretch_factor_array(n) = stretch_factor_1 |
---|
858 | dz_stretch_factor_array_2(n) = stretch_factor_2 |
---|
859 | delta_total_old = delta_total_new |
---|
860 | ENDIF |
---|
861 | |
---|
862 | iterations = iterations + 1 |
---|
863 | |
---|
864 | ENDDO |
---|
865 | |
---|
866 | ! |
---|
867 | !-- Second branch for stretching from fine to rough |
---|
868 | ELSEIF ( dz(n) < dz(n+1) ) THEN |
---|
869 | DO WHILE ( stretch_factor_1 <= stretch_factor_upper_limit ) |
---|
870 | |
---|
871 | stretch_factor_1 = 1.0_wp + iterations * stretch_factor_interval |
---|
872 | distance = ABS( dz_stretch_level_end(n) - & |
---|
873 | dz_stretch_level_start(n) ) |
---|
874 | numerator = distance*stretch_factor_1/dz(n) + & |
---|
875 | stretch_factor_1 - distance/dz(n) |
---|
876 | |
---|
877 | l = LOG( numerator ) / LOG( stretch_factor_1 ) - 1.0_wp |
---|
878 | l_rounded = NINT( l ) |
---|
879 | delta_l = ABS( l_rounded - l ) / l |
---|
880 | |
---|
881 | stretch_factor_2 = EXP( LOG( dz(n+1)/dz(n) ) / (l_rounded) ) |
---|
882 | |
---|
883 | delta_stretch_factor = ABS( stretch_factor_1 - & |
---|
884 | stretch_factor_2 ) / & |
---|
885 | stretch_factor_2 |
---|
886 | |
---|
887 | delta_total_new = delta_l + delta_stretch_factor |
---|
888 | |
---|
889 | ! |
---|
890 | !-- stretch_factor_1 is taken to guarantee that the stretching |
---|
891 | !-- procedure ends as close as possible to dz_stretch_level_end. |
---|
892 | !-- stretch_factor_2 would guarantee that the stretched dz(n) is |
---|
893 | !-- equal to dz(n+1) after l_rounded grid levels. |
---|
894 | IF (delta_total_new < delta_total_old) THEN |
---|
895 | dz_stretch_factor_array(n) = stretch_factor_1 |
---|
896 | dz_stretch_factor_array_2(n) = stretch_factor_2 |
---|
897 | delta_total_old = delta_total_new |
---|
898 | ENDIF |
---|
899 | |
---|
900 | iterations = iterations + 1 |
---|
901 | ENDDO |
---|
902 | |
---|
903 | ELSE |
---|
904 | message_string= 'Two adjacent values of dz must be different' |
---|
905 | CALL message( 'init_grid', 'PA0228', 1, 2, 0, 6, 0 ) |
---|
906 | |
---|
907 | ENDIF |
---|
908 | |
---|
909 | ! |
---|
910 | !-- Check if also the second stretching factor fits into the allowed |
---|
911 | !-- interval. If not, print a warning for the user. |
---|
912 | IF ( dz_stretch_factor_array_2(n) < stretch_factor_lower_limit .OR. & |
---|
913 | dz_stretch_factor_array_2(n) > stretch_factor_upper_limit ) THEN |
---|
914 | WRITE( message_string, * ) 'stretch_factor_2 = ', & |
---|
915 | dz_stretch_factor_array_2(n), ' which is',& |
---|
916 | ' responsible for exactly reaching& dz =',& |
---|
917 | dz(n+1), 'after a specific amount of', & |
---|
918 | ' grid levels& exceeds the upper', & |
---|
919 | ' limit =', stretch_factor_upper_limit, & |
---|
920 | ' &or lower limit = ', & |
---|
921 | stretch_factor_lower_limit |
---|
922 | CALL message( 'init_grid', 'PA0499', 0, 1, 0, 6, 0 ) |
---|
923 | |
---|
924 | ENDIF |
---|
925 | ENDDO |
---|
926 | |
---|
927 | END SUBROUTINE calculate_stretching_factor |
---|
928 | |
---|
929 | |
---|
930 | ! Description: |
---|
931 | ! -----------------------------------------------------------------------------! |
---|
932 | !> Set temporary topography flags and reference buildings on top of underlying |
---|
933 | !> orography. |
---|
934 | !------------------------------------------------------------------------------! |
---|
935 | SUBROUTINE process_topography( topo_3d ) |
---|
936 | |
---|
937 | USE arrays_3d, & |
---|
938 | ONLY: zu, zw |
---|
939 | |
---|
940 | USE control_parameters, & |
---|
941 | ONLY: bc_lr_cyc, bc_ns_cyc, ocean_mode |
---|
942 | |
---|
943 | USE exchange_horiz_mod, & |
---|
944 | ONLY: exchange_horiz_int, exchange_horiz_2d |
---|
945 | |
---|
946 | USE indices, & |
---|
947 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nzb, & |
---|
948 | nzt |
---|
949 | |
---|
950 | USE netcdf_data_input_mod, & |
---|
951 | ONLY: buildings_f, building_id_f, building_type_f, & |
---|
952 | init_model, & |
---|
953 | input_pids_static, & |
---|
954 | terrain_height_f |
---|
955 | |
---|
956 | USE kinds |
---|
957 | |
---|
958 | USE pegrid |
---|
959 | |
---|
960 | IMPLICIT NONE |
---|
961 | |
---|
962 | INTEGER(iwp) :: i !< running index along x-direction |
---|
963 | INTEGER(iwp) :: j !< running index along y-direction |
---|
964 | INTEGER(iwp) :: k !< running index along z-direction with respect to numeric grid |
---|
965 | INTEGER(iwp) :: k2 !< running index along z-direction with respect to netcdf grid |
---|
966 | INTEGER(iwp) :: nr !< index variable indication maximum terrain height for respective building ID |
---|
967 | INTEGER(iwp) :: num_build !< counter for number of buildings |
---|
968 | INTEGER(iwp) :: topo_top_index !< orography top index, used to map 3D buildings onto terrain |
---|
969 | |
---|
970 | #if defined( __parallel ) |
---|
971 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: displace_dum !< displacements of start addresses, used for MPI_ALLGATHERV |
---|
972 | #endif |
---|
973 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids !< building IDs on entire model domain |
---|
974 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_final !< building IDs on entire model domain, multiple occurences are sorted out |
---|
975 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_final_tmp !< temporary array used for resizing |
---|
976 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_l !< building IDs on local subdomain |
---|
977 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_l_tmp !< temporary array used to resize array of building IDs |
---|
978 | |
---|
979 | INTEGER(iwp), DIMENSION(0:numprocs-1) :: num_buildings !< number of buildings with different ID on entire model domain |
---|
980 | INTEGER(iwp), DIMENSION(0:numprocs-1) :: num_buildings_l !< number of buildings with different ID on local subdomain |
---|
981 | |
---|
982 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo_3d !< input array for 3D topography and dummy array for setting "outer"-flags |
---|
983 | |
---|
984 | REAL(wp) :: ocean_offset !< offset to consider inverse vertical coordinate at topography definition |
---|
985 | REAL(wp) :: oro_min = 0.0_wp !< minimum terrain height in entire model domain, used to reference terrain to zero |
---|
986 | REAL(wp), DIMENSION(:), ALLOCATABLE :: oro_max !< maximum terrain height occupied by an building with certain id |
---|
987 | REAL(wp), DIMENSION(:), ALLOCATABLE :: oro_max_l !< maximum terrain height occupied by an building with certain id, on local subdomain |
---|
988 | |
---|
989 | ! |
---|
990 | !-- Reference lowest terrain height to zero. This ensures that first, |
---|
991 | !-- non-required gird levels (those which lie entirely below the minimum |
---|
992 | !-- orography) are avoided, and second, that also negative orography can be used |
---|
993 | !-- within the input file. |
---|
994 | !-- Please note, in case of a nested run, the global minimum from all parent and |
---|
995 | !-- childs need to be remove to avoid steep edges at the child-domain boundaries. |
---|
996 | IF ( input_pids_static ) THEN |
---|
997 | |
---|
998 | #if defined( __parallel ) |
---|
999 | CALL MPI_ALLREDUCE( MINVAL( terrain_height_f%var ), oro_min, 1, & |
---|
1000 | MPI_REAL, MPI_MIN, MPI_COMM_WORLD, ierr ) |
---|
1001 | #else |
---|
1002 | oro_min = MINVAL( terrain_height_f%var ) |
---|
1003 | #endif |
---|
1004 | terrain_height_f%var = terrain_height_f%var - oro_min |
---|
1005 | ! |
---|
1006 | !-- Update reference height used within output files |
---|
1007 | init_model%origin_z = init_model%origin_z + oro_min |
---|
1008 | |
---|
1009 | ENDIF |
---|
1010 | |
---|
1011 | ! |
---|
1012 | !-- In the following, buildings and orography are further preprocessed |
---|
1013 | !-- before they are mapped on the LES grid. |
---|
1014 | !-- Buildings are mapped on top of the orography by maintaining the roof |
---|
1015 | !-- shape of the building. This can be achieved by referencing building on |
---|
1016 | !-- top of the maximum terrain height within the area occupied by the |
---|
1017 | !-- respective building. As buildings and terrain height are defined PE-wise, |
---|
1018 | !-- parallelization of this referencing is required (a building can be |
---|
1019 | !-- distributed between different PEs). |
---|
1020 | !-- In a first step, determine the number of buildings with different |
---|
1021 | !-- building id on each PE. In a next step, all building ids are gathered |
---|
1022 | !-- into one array which is present to all PEs. For each building ID, |
---|
1023 | !-- the maximum terrain height occupied by the respective building is |
---|
1024 | !-- computed and distributed to each PE. |
---|
1025 | !-- Finally, for each building id and its respective reference orography, |
---|
1026 | !-- builidings are mapped on top. |
---|
1027 | !-- |
---|
1028 | !-- First, pre-set topography flags, bit 1 indicates orography, bit 2 |
---|
1029 | !-- buildings |
---|
1030 | !-- classify the respective surfaces. |
---|
1031 | topo_3d = IBSET( topo_3d, 0 ) |
---|
1032 | topo_3d(nzb,:,:) = IBCLR( topo_3d(nzb,:,:), 0 ) |
---|
1033 | ! |
---|
1034 | !-- In order to map topography on PALM grid also in case of ocean simulations, |
---|
1035 | !-- pre-calculate an offset value. |
---|
1036 | ocean_offset = MERGE( zw(0), 0.0_wp, ocean_mode ) |
---|
1037 | ! |
---|
1038 | !-- Reference buildings on top of orography. This is not necessary |
---|
1039 | !-- if topography is read from ASCII file as no distinction between buildings |
---|
1040 | !-- and terrain height can be made. Moreover, this is also not necessary if |
---|
1041 | !-- urban-surface and land-surface model are used at the same time. |
---|
1042 | IF ( input_pids_static ) THEN |
---|
1043 | |
---|
1044 | IF ( buildings_f%from_file ) THEN |
---|
1045 | num_buildings_l = 0 |
---|
1046 | num_buildings = 0 |
---|
1047 | ! |
---|
1048 | !-- Allocate at least one element for building ids and give it an inital |
---|
1049 | !-- negative value that will be overwritten later. This, however, is |
---|
1050 | !-- necessary in case there all IDs in the model domain are fill values. |
---|
1051 | ALLOCATE( build_ids_l(1) ) |
---|
1052 | build_ids_l = -1 |
---|
1053 | DO i = nxl, nxr |
---|
1054 | DO j = nys, nyn |
---|
1055 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
1056 | IF ( num_buildings_l(myid) > 0 ) THEN |
---|
1057 | IF ( ANY( building_id_f%var(j,i) == build_ids_l ) ) & |
---|
1058 | THEN |
---|
1059 | CYCLE |
---|
1060 | ELSE |
---|
1061 | num_buildings_l(myid) = num_buildings_l(myid) + 1 |
---|
1062 | ! |
---|
1063 | !-- Resize array with different local building ids |
---|
1064 | ALLOCATE( build_ids_l_tmp(1:SIZE(build_ids_l)) ) |
---|
1065 | build_ids_l_tmp = build_ids_l |
---|
1066 | DEALLOCATE( build_ids_l ) |
---|
1067 | ALLOCATE( build_ids_l(1:num_buildings_l(myid)) ) |
---|
1068 | build_ids_l(1:num_buildings_l(myid)-1) = & |
---|
1069 | build_ids_l_tmp(1:num_buildings_l(myid)-1) |
---|
1070 | build_ids_l(num_buildings_l(myid)) = building_id_f%var(j,i) |
---|
1071 | DEALLOCATE( build_ids_l_tmp ) |
---|
1072 | ENDIF |
---|
1073 | ! |
---|
1074 | !-- First occuring building id on PE |
---|
1075 | ELSE |
---|
1076 | num_buildings_l(myid) = num_buildings_l(myid) + 1 |
---|
1077 | build_ids_l(1) = building_id_f%var(j,i) |
---|
1078 | ENDIF |
---|
1079 | ENDIF |
---|
1080 | ENDDO |
---|
1081 | ENDDO |
---|
1082 | ! |
---|
1083 | !-- Determine number of different building ids for the entire domain |
---|
1084 | #if defined( __parallel ) |
---|
1085 | CALL MPI_ALLREDUCE( num_buildings_l, num_buildings, numprocs, & |
---|
1086 | MPI_INTEGER, MPI_SUM, comm2d, ierr ) |
---|
1087 | #else |
---|
1088 | num_buildings = num_buildings_l |
---|
1089 | #endif |
---|
1090 | ! |
---|
1091 | !-- Gather all buildings ids on each PEs. |
---|
1092 | !-- First, allocate array encompassing all building ids in model domain. |
---|
1093 | ALLOCATE( build_ids(1:SUM(num_buildings)) ) |
---|
1094 | #if defined( __parallel ) |
---|
1095 | ! |
---|
1096 | !-- Allocate array for displacements. |
---|
1097 | !-- As each PE may has a different number of buildings, so that |
---|
1098 | !-- the block sizes send by each PE may not be equal. Hence, |
---|
1099 | !-- information about the respective displacement is required, indicating |
---|
1100 | !-- the respective adress where each MPI-task writes into the receive |
---|
1101 | !-- buffer array |
---|
1102 | ALLOCATE( displace_dum(0:numprocs-1) ) |
---|
1103 | displace_dum(0) = 0 |
---|
1104 | DO i = 1, numprocs-1 |
---|
1105 | displace_dum(i) = displace_dum(i-1) + num_buildings(i-1) |
---|
1106 | ENDDO |
---|
1107 | |
---|
1108 | CALL MPI_ALLGATHERV( build_ids_l(1:num_buildings_l(myid)), & |
---|
1109 | num_buildings(myid), & |
---|
1110 | MPI_INTEGER, & |
---|
1111 | build_ids, & |
---|
1112 | num_buildings, & |
---|
1113 | displace_dum, & |
---|
1114 | MPI_INTEGER, & |
---|
1115 | comm2d, ierr ) |
---|
1116 | |
---|
1117 | DEALLOCATE( displace_dum ) |
---|
1118 | |
---|
1119 | #else |
---|
1120 | build_ids = build_ids_l |
---|
1121 | #endif |
---|
1122 | |
---|
1123 | ! |
---|
1124 | !-- Note, in parallel mode building ids can occure mutliple times, as |
---|
1125 | !-- each PE has send its own ids. Therefore, sort out building ids which |
---|
1126 | !-- appear more than one time. |
---|
1127 | num_build = 0 |
---|
1128 | DO nr = 1, SIZE(build_ids) |
---|
1129 | |
---|
1130 | IF ( ALLOCATED(build_ids_final) ) THEN |
---|
1131 | IF ( ANY( build_ids(nr) == build_ids_final ) ) THEN |
---|
1132 | CYCLE |
---|
1133 | ELSE |
---|
1134 | num_build = num_build + 1 |
---|
1135 | ! |
---|
1136 | !-- Resize |
---|
1137 | ALLOCATE( build_ids_final_tmp(1:num_build) ) |
---|
1138 | build_ids_final_tmp(1:num_build-1) = build_ids_final(1:num_build-1) |
---|
1139 | DEALLOCATE( build_ids_final ) |
---|
1140 | ALLOCATE( build_ids_final(1:num_build) ) |
---|
1141 | build_ids_final(1:num_build-1) = build_ids_final_tmp(1:num_build-1) |
---|
1142 | build_ids_final(num_build) = build_ids(nr) |
---|
1143 | DEALLOCATE( build_ids_final_tmp ) |
---|
1144 | ENDIF |
---|
1145 | ELSE |
---|
1146 | num_build = num_build + 1 |
---|
1147 | ALLOCATE( build_ids_final(1:num_build) ) |
---|
1148 | build_ids_final(num_build) = build_ids(nr) |
---|
1149 | ENDIF |
---|
1150 | ENDDO |
---|
1151 | |
---|
1152 | ! |
---|
1153 | !-- Determine maximumum terrain height occupied by the respective |
---|
1154 | !-- building and temporalily store on oro_max |
---|
1155 | ALLOCATE( oro_max_l(1:SIZE(build_ids_final)) ) |
---|
1156 | ALLOCATE( oro_max(1:SIZE(build_ids_final)) ) |
---|
1157 | oro_max_l = 0.0_wp |
---|
1158 | |
---|
1159 | DO nr = 1, SIZE(build_ids_final) |
---|
1160 | oro_max_l(nr) = MAXVAL( & |
---|
1161 | MERGE( terrain_height_f%var(nys:nyn,nxl:nxr), & |
---|
1162 | 0.0_wp, & |
---|
1163 | building_id_f%var(nys:nyn,nxl:nxr) == & |
---|
1164 | build_ids_final(nr) ) ) |
---|
1165 | ENDDO |
---|
1166 | |
---|
1167 | #if defined( __parallel ) |
---|
1168 | IF ( SIZE(build_ids_final) >= 1 ) THEN |
---|
1169 | CALL MPI_ALLREDUCE( oro_max_l, oro_max, SIZE( oro_max ), MPI_REAL,& |
---|
1170 | MPI_MAX, comm2d, ierr ) |
---|
1171 | ENDIF |
---|
1172 | #else |
---|
1173 | oro_max = oro_max_l |
---|
1174 | #endif |
---|
1175 | ! |
---|
1176 | !-- Finally, determine discrete grid height of maximum orography occupied |
---|
1177 | !-- by a building. Use all-or-nothing approach, i.e. if terrain |
---|
1178 | !-- exceeds the scalar level the grid box is fully terrain and the |
---|
1179 | !-- maximum terrain is set to the zw level. |
---|
1180 | !-- terrain or |
---|
1181 | oro_max_l = 0.0 |
---|
1182 | DO nr = 1, SIZE(build_ids_final) |
---|
1183 | DO k = nzb, nzt |
---|
1184 | IF ( zu(k) - ocean_offset <= oro_max(nr) ) & |
---|
1185 | oro_max_l(nr) = zw(k) - ocean_offset |
---|
1186 | ENDDO |
---|
1187 | oro_max(nr) = oro_max_l(nr) |
---|
1188 | ENDDO |
---|
1189 | ENDIF |
---|
1190 | ! |
---|
1191 | !-- Allocate array for storing terrain height under buildings |
---|
1192 | IF ( buildings_f%from_file ) THEN |
---|
1193 | ALLOCATE( buildings_f%oro_max(nysg:nyng,nxlg:nxrg) ) |
---|
1194 | buildings_f%oro_max = buildings_f%fill1 |
---|
1195 | END IF |
---|
1196 | ! |
---|
1197 | !-- Map orography as well as buildings onto grid. |
---|
1198 | DO i = nxl, nxr |
---|
1199 | DO j = nys, nyn |
---|
1200 | topo_top_index = 0 |
---|
1201 | ! |
---|
1202 | !-- Obtain index in global building_id array |
---|
1203 | IF ( buildings_f%from_file ) THEN |
---|
1204 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
1205 | ! |
---|
1206 | !-- Determine index where maximum terrain height occupied by |
---|
1207 | !-- the respective building height is stored. |
---|
1208 | nr = MINLOC( ABS( build_ids_final - & |
---|
1209 | building_id_f%var(j,i) ), DIM = 1 ) |
---|
1210 | ! |
---|
1211 | !-- Save grid-indexed oro_max |
---|
1212 | buildings_f%oro_max(j,i) = oro_max(nr) |
---|
1213 | ENDIF |
---|
1214 | ENDIF |
---|
1215 | DO k = nzb, nzt |
---|
1216 | ! |
---|
1217 | !-- In a first step, if grid point is below or equal the given |
---|
1218 | !-- terrain height, grid point is flagged to be of type natural. |
---|
1219 | !-- Please note, in case there is also a building which is lower |
---|
1220 | !-- than the vertical grid spacing, initialization of surface |
---|
1221 | !-- attributes will not be correct as given surface information |
---|
1222 | !-- will not be in accordance to the classified grid points. |
---|
1223 | !-- Hence, in this case, also a building flag. |
---|
1224 | IF ( zu(k) - ocean_offset <= terrain_height_f%var(j,i) ) THEN |
---|
1225 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1226 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 1 ) |
---|
1227 | topo_top_index = k ! topo_top_index + 1 |
---|
1228 | ENDIF |
---|
1229 | ! |
---|
1230 | !-- Set building grid points. Here, only consider 2D buildings. |
---|
1231 | !-- 3D buildings require separate treatment. |
---|
1232 | IF ( buildings_f%from_file .AND. buildings_f%lod == 1 ) THEN |
---|
1233 | ! |
---|
1234 | !-- Fill-up the terrain to the level of maximum orography |
---|
1235 | !-- within the building-covered area. |
---|
1236 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
1237 | ! |
---|
1238 | !-- Note, oro_max is always on zw level |
---|
1239 | IF ( zu(k) - ocean_offset < oro_max(nr) ) THEN |
---|
1240 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1241 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 1 ) |
---|
1242 | ELSEIF ( zu(k) - ocean_offset <= & |
---|
1243 | oro_max(nr) + buildings_f%var_2d(j,i) ) THEN |
---|
1244 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1245 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
1246 | ENDIF |
---|
1247 | ENDIF |
---|
1248 | ENDIF |
---|
1249 | ENDDO |
---|
1250 | ! |
---|
1251 | !-- Special treatment for non grid-resolved buildings. This case, |
---|
1252 | !-- the uppermost terrain grid point is flagged as building as well |
---|
1253 | !-- well, even though no building exists at all. However, the |
---|
1254 | !-- surface element will be identified as urban-surface and the |
---|
1255 | !-- input data provided by the drivers is consistent to the surface |
---|
1256 | !-- classification. Else, all non grid-resolved buildings would vanish |
---|
1257 | !-- and identified as terrain grid points, which, however, won't be |
---|
1258 | !-- consistent with the input data. |
---|
1259 | IF ( buildings_f%from_file .AND. buildings_f%lod == 1 ) THEN |
---|
1260 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
1261 | DO k = nzb, nzt |
---|
1262 | IF( zw(k) - ocean_offset == oro_max(nr) ) THEN |
---|
1263 | IF ( buildings_f%var_2d(j,i) <= zu(k+1) - zw(k) ) THEN |
---|
1264 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
1265 | ENDIF |
---|
1266 | ENDIF |
---|
1267 | ENDDO |
---|
1268 | ENDIF |
---|
1269 | ENDIF |
---|
1270 | ! |
---|
1271 | !-- Map 3D buildings onto terrain height. |
---|
1272 | !-- In case of any slopes, map building on top of maximum terrain |
---|
1273 | !-- height covered by the building. In other words, extend |
---|
1274 | !-- building down to the respective local terrain-surface height. |
---|
1275 | IF ( buildings_f%from_file .AND. buildings_f%lod == 2 ) THEN |
---|
1276 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
1277 | ! |
---|
1278 | !-- Extend building down to the terrain surface, i.e. fill-up |
---|
1279 | !-- surface irregularities below a building. Note, oro_max |
---|
1280 | !-- is already a discrete height according to the all-or-nothing |
---|
1281 | !-- approach, i.e. grid box is either topography or atmosphere, |
---|
1282 | !-- terrain top is defined at upper bound of the grid box. |
---|
1283 | !-- Hence, check for zw in this case. |
---|
1284 | !-- Note, do this only for buildings which are surface mounted, |
---|
1285 | !-- i.e. building types 1-6. Below bridges, which are represented |
---|
1286 | !-- exclusively by building type 7, terrain shape should be |
---|
1287 | !-- maintained. |
---|
1288 | IF ( building_type_f%from_file ) THEN |
---|
1289 | IF ( building_type_f%var(j,i) /= 7 ) THEN |
---|
1290 | DO k = topo_top_index + 1, nzt + 1 |
---|
1291 | IF ( zu(k) - ocean_offset <= oro_max(nr) ) THEN |
---|
1292 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1293 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 1 ) |
---|
1294 | ENDIF |
---|
1295 | ENDDO |
---|
1296 | ! |
---|
1297 | !-- After surface irregularities are smoothen, determine |
---|
1298 | !-- lower start index where building starts. |
---|
1299 | DO k = nzb, nzt |
---|
1300 | IF ( zu(k) - ocean_offset <= oro_max(nr) ) & |
---|
1301 | topo_top_index = k |
---|
1302 | ENDDO |
---|
1303 | ENDIF |
---|
1304 | ENDIF |
---|
1305 | ! |
---|
1306 | !-- Finally, map building on top. |
---|
1307 | k2 = 0 |
---|
1308 | DO k = topo_top_index, nzt + 1 |
---|
1309 | IF ( k2 <= buildings_f%nz-1 ) THEN |
---|
1310 | IF ( buildings_f%var_3d(k2,j,i) == 1 ) THEN |
---|
1311 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1312 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
1313 | ENDIF |
---|
1314 | ENDIF |
---|
1315 | k2 = k2 + 1 |
---|
1316 | ENDDO |
---|
1317 | ENDIF |
---|
1318 | ENDIF |
---|
1319 | ENDDO |
---|
1320 | ENDDO |
---|
1321 | ! |
---|
1322 | !-- Horizontal exchange the oro_max array, which is required to for |
---|
1323 | !-- initialization of building-surface properties. |
---|
1324 | IF ( ALLOCATED( buildings_f%oro_max ) ) THEN |
---|
1325 | CALL exchange_horiz_2d( buildings_f%oro_max(:,:) ) |
---|
1326 | ENDIF |
---|
1327 | ! |
---|
1328 | !-- Deallocate temporary arrays required for processing and reading data |
---|
1329 | IF ( ALLOCATED( oro_max ) ) DEALLOCATE( oro_max ) |
---|
1330 | IF ( ALLOCATED( oro_max_l ) ) DEALLOCATE( oro_max_l ) |
---|
1331 | IF ( ALLOCATED( build_ids_final ) ) DEALLOCATE( build_ids_final ) |
---|
1332 | ! |
---|
1333 | !-- Topography input via ASCII format. |
---|
1334 | ELSE |
---|
1335 | ocean_offset = MERGE( zw(0), 0.0_wp, ocean_mode ) |
---|
1336 | ! |
---|
1337 | !-- Initialize topography bit 0 (indicates obstacle) everywhere to zero |
---|
1338 | !-- and clear all grid points at nzb, where alway a surface is defined. |
---|
1339 | !-- Further, set also bit 1 (indicates terrain) at nzb, which is further |
---|
1340 | !-- used for masked data output and further processing. Note, in the |
---|
1341 | !-- ASCII case no distinction is made between buildings and terrain, |
---|
1342 | !-- so that setting of bit 1 and 2 at the same time has no effect. |
---|
1343 | topo_3d = IBSET( topo_3d, 0 ) |
---|
1344 | topo_3d(nzb,:,:) = IBCLR( topo_3d(nzb,:,:), 0 ) |
---|
1345 | topo_3d(nzb,:,:) = IBSET( topo_3d(nzb,:,:), 1 ) |
---|
1346 | DO i = nxl, nxr |
---|
1347 | DO j = nys, nyn |
---|
1348 | DO k = nzb, nzt |
---|
1349 | ! |
---|
1350 | !-- Flag topography for all grid points which are below |
---|
1351 | !-- the local topography height. |
---|
1352 | !-- Note, each topography is flagged as building (bit 2) as well as |
---|
1353 | !-- terrain (bit 1) in order to employ urban-surface as well as |
---|
1354 | !-- land-surface model. |
---|
1355 | IF ( zu(k) - ocean_offset <= buildings_f%var_2d(j,i) ) THEN |
---|
1356 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1357 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 1 ) |
---|
1358 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
1359 | ENDIF |
---|
1360 | ENDDO |
---|
1361 | ENDDO |
---|
1362 | ENDDO |
---|
1363 | ENDIF |
---|
1364 | |
---|
1365 | CALL exchange_horiz_int( topo_3d, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
1366 | |
---|
1367 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
1368 | IF ( nys == 0 ) topo_3d(:,-1,:) = topo_3d(:,0,:) |
---|
1369 | IF ( nyn == ny ) topo_3d(:,ny+1,:) = topo_3d(:,ny,:) |
---|
1370 | ENDIF |
---|
1371 | |
---|
1372 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
1373 | IF ( nxl == 0 ) topo_3d(:,:,-1) = topo_3d(:,:,0) |
---|
1374 | IF ( nxr == nx ) topo_3d(:,:,nx+1) = topo_3d(:,:,nx) |
---|
1375 | ENDIF |
---|
1376 | |
---|
1377 | END SUBROUTINE process_topography |
---|
1378 | |
---|
1379 | |
---|
1380 | ! Description: |
---|
1381 | ! -----------------------------------------------------------------------------! |
---|
1382 | !> Filter topography, i.e. fill holes resolved by only one grid point. |
---|
1383 | !> Such holes are suspected to lead to velocity blow-ups as continuity |
---|
1384 | !> equation on discrete grid cannot be fulfilled in such case. |
---|
1385 | !------------------------------------------------------------------------------! |
---|
1386 | SUBROUTINE filter_topography( topo_3d ) |
---|
1387 | |
---|
1388 | USE control_parameters, & |
---|
1389 | ONLY: bc_lr_cyc, bc_ns_cyc, message_string |
---|
1390 | |
---|
1391 | USE exchange_horiz_mod, & |
---|
1392 | ONLY: exchange_horiz_int, exchange_horiz_2d_byte, exchange_horiz_2d_int |
---|
1393 | |
---|
1394 | USE indices, & |
---|
1395 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nzb, nzt |
---|
1396 | |
---|
1397 | USE netcdf_data_input_mod, & |
---|
1398 | ONLY: building_id_f, building_type_f |
---|
1399 | |
---|
1400 | USE pegrid |
---|
1401 | |
---|
1402 | IMPLICIT NONE |
---|
1403 | |
---|
1404 | LOGICAL :: filled = .FALSE. !< flag indicating if holes were filled |
---|
1405 | |
---|
1406 | INTEGER(iwp) :: i !< running index along x-direction |
---|
1407 | INTEGER(iwp) :: j !< running index along y-direction |
---|
1408 | INTEGER(iwp) :: k !< running index along z-direction |
---|
1409 | INTEGER(iwp) :: num_hole !< number of holes (in topography) resolved by only one grid point |
---|
1410 | INTEGER(iwp) :: num_hole_l !< number of holes (in topography) resolved by only one grid point on local PE |
---|
1411 | INTEGER(iwp) :: num_wall !< number of surrounding vertical walls for a single grid point |
---|
1412 | |
---|
1413 | INTEGER(iwp), DIMENSION(:,:,:), ALLOCATABLE :: topo_tmp !< temporary 3D-topography used to fill holes |
---|
1414 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo_3d !< 3D-topography array merging buildings and orography |
---|
1415 | ! |
---|
1416 | !-- Before checking for holes, set lateral boundary conditions for |
---|
1417 | !-- topography. After hole-filling, boundary conditions must be set again. |
---|
1418 | !-- Several iterations are performed, in order to fill holes which might |
---|
1419 | !-- emerge by the filling-algorithm itself. |
---|
1420 | ALLOCATE( topo_tmp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
1421 | topo_tmp = 0 |
---|
1422 | |
---|
1423 | num_hole = 99999 |
---|
1424 | DO WHILE ( num_hole > 0 ) |
---|
1425 | |
---|
1426 | num_hole = 0 |
---|
1427 | CALL exchange_horiz_int( topo_3d, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
1428 | ! |
---|
1429 | !-- Exchange also building ID and type. Note, building_type is an one-byte |
---|
1430 | !-- variable. |
---|
1431 | IF ( building_id_f%from_file ) & |
---|
1432 | CALL exchange_horiz_2d_int( building_id_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
1433 | IF ( building_type_f%from_file ) & |
---|
1434 | CALL exchange_horiz_2d_byte( building_type_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
1435 | |
---|
1436 | topo_tmp = topo_3d |
---|
1437 | ! |
---|
1438 | !-- In case of non-cyclic lateral boundaries, assume lateral boundary to be |
---|
1439 | !-- a solid wall. Thus, intermediate spaces of one grid point between |
---|
1440 | !-- boundary and some topographic structure will be filled. |
---|
1441 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
1442 | IF ( nys == 0 ) topo_tmp(:,-1,:) = IBCLR( topo_tmp(:,0,:), 0 ) |
---|
1443 | IF ( nyn == ny ) topo_tmp(:,ny+1,:) = IBCLR( topo_tmp(:,ny,:), 0 ) |
---|
1444 | ENDIF |
---|
1445 | |
---|
1446 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
1447 | IF ( nxl == 0 ) topo_tmp(:,:,-1) = IBCLR( topo_tmp(:,:,0), 0 ) |
---|
1448 | IF ( nxr == nx ) topo_tmp(:,:,nx+1) = IBCLR( topo_tmp(:,:,nx), 0 ) |
---|
1449 | ENDIF |
---|
1450 | |
---|
1451 | num_hole_l = 0 |
---|
1452 | DO i = nxl, nxr |
---|
1453 | DO j = nys, nyn |
---|
1454 | DO k = nzb+1, nzt |
---|
1455 | IF ( BTEST( topo_tmp(k,j,i), 0 ) ) THEN |
---|
1456 | num_wall = 0 |
---|
1457 | IF ( .NOT. BTEST( topo_tmp(k,j-1,i), 0 ) ) & |
---|
1458 | num_wall = num_wall + 1 |
---|
1459 | IF ( .NOT. BTEST( topo_tmp(k,j+1,i), 0 ) ) & |
---|
1460 | num_wall = num_wall + 1 |
---|
1461 | IF ( .NOT. BTEST( topo_tmp(k,j,i-1), 0 ) ) & |
---|
1462 | num_wall = num_wall + 1 |
---|
1463 | IF ( .NOT. BTEST( topo_tmp(k,j,i+1), 0 ) ) & |
---|
1464 | num_wall = num_wall + 1 |
---|
1465 | IF ( .NOT. BTEST( topo_tmp(k-1,j,i), 0 ) ) & |
---|
1466 | num_wall = num_wall + 1 |
---|
1467 | IF ( .NOT. BTEST( topo_tmp(k+1,j,i), 0 ) ) & |
---|
1468 | num_wall = num_wall + 1 |
---|
1469 | |
---|
1470 | IF ( num_wall >= 4 ) THEN |
---|
1471 | num_hole_l = num_hole_l + 1 |
---|
1472 | ! |
---|
1473 | !-- Clear flag 0 and set special flag ( bit 4) to indicate |
---|
1474 | !-- that new topography point is a result of filtering process. |
---|
1475 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
1476 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 4 ) |
---|
1477 | ! |
---|
1478 | !-- If filled grid point is occupied by a building, classify |
---|
1479 | !-- it as building grid point. |
---|
1480 | IF ( building_type_f%from_file ) THEN |
---|
1481 | IF ( building_type_f%var(j,i) /= & |
---|
1482 | building_type_f%fill .OR. & |
---|
1483 | building_type_f%var(j+1,i) /= & |
---|
1484 | building_type_f%fill .OR. & |
---|
1485 | building_type_f%var(j-1,i) /= & |
---|
1486 | building_type_f%fill .OR. & |
---|
1487 | building_type_f%var(j,i+1) /= & |
---|
1488 | building_type_f%fill .OR. & |
---|
1489 | building_type_f%var(j,i-1) /= & |
---|
1490 | building_type_f%fill ) THEN |
---|
1491 | ! |
---|
1492 | !-- Set flag indicating building surfaces |
---|
1493 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
1494 | ! |
---|
1495 | !-- Set building_type and ID at this position if not |
---|
1496 | !-- already set. This is required for proper |
---|
1497 | !-- initialization of urban-surface energy balance |
---|
1498 | !-- solver. |
---|
1499 | IF ( building_type_f%var(j,i) == & |
---|
1500 | building_type_f%fill ) THEN |
---|
1501 | |
---|
1502 | IF ( building_type_f%var(j+1,i) /= & |
---|
1503 | building_type_f%fill ) THEN |
---|
1504 | building_type_f%var(j,i) = & |
---|
1505 | building_type_f%var(j+1,i) |
---|
1506 | building_id_f%var(j,i) = & |
---|
1507 | building_id_f%var(j+1,i) |
---|
1508 | ELSEIF ( building_type_f%var(j-1,i) /= & |
---|
1509 | building_type_f%fill ) THEN |
---|
1510 | building_type_f%var(j,i) = & |
---|
1511 | building_type_f%var(j-1,i) |
---|
1512 | building_id_f%var(j,i) = & |
---|
1513 | building_id_f%var(j-1,i) |
---|
1514 | ELSEIF ( building_type_f%var(j,i+1) /= & |
---|
1515 | building_type_f%fill ) THEN |
---|
1516 | building_type_f%var(j,i) = & |
---|
1517 | building_type_f%var(j,i+1) |
---|
1518 | building_id_f%var(j,i) = & |
---|
1519 | building_id_f%var(j,i+1) |
---|
1520 | ELSEIF ( building_type_f%var(j,i-1) /= & |
---|
1521 | building_type_f%fill ) THEN |
---|
1522 | building_type_f%var(j,i) = & |
---|
1523 | building_type_f%var(j,i-1) |
---|
1524 | building_id_f%var(j,i) = & |
---|
1525 | building_id_f%var(j,i-1) |
---|
1526 | ENDIF |
---|
1527 | ENDIF |
---|
1528 | ENDIF |
---|
1529 | ENDIF |
---|
1530 | ! |
---|
1531 | !-- If filled grid point is already classified as building |
---|
1532 | !-- everything is fine, else classify this grid point as |
---|
1533 | !-- natural type grid point. This case, values for the |
---|
1534 | !-- surface type are already set. |
---|
1535 | IF ( .NOT. BTEST( topo_3d(k,j,i), 2 ) ) THEN |
---|
1536 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 1 ) |
---|
1537 | ENDIF |
---|
1538 | ENDIF |
---|
1539 | ENDIF |
---|
1540 | ENDDO |
---|
1541 | ENDDO |
---|
1542 | ENDDO |
---|
1543 | ! |
---|
1544 | !-- Count the total number of holes, required for informative message. |
---|
1545 | #if defined( __parallel ) |
---|
1546 | CALL MPI_ALLREDUCE( num_hole_l, num_hole, 1, MPI_INTEGER, MPI_SUM, & |
---|
1547 | comm2d, ierr ) |
---|
1548 | #else |
---|
1549 | num_hole = num_hole_l |
---|
1550 | #endif |
---|
1551 | IF ( num_hole > 0 .AND. .NOT. filled ) filled = .TRUE. |
---|
1552 | |
---|
1553 | ENDDO |
---|
1554 | ! |
---|
1555 | !-- Create an informative message if any holes were filled. |
---|
1556 | IF ( filled ) THEN |
---|
1557 | WRITE( message_string, * ) 'Topography was filtered, i.e. holes ' // & |
---|
1558 | 'resolved by only one grid point ' // & |
---|
1559 | 'were filled during initialization.' |
---|
1560 | CALL message( 'init_grid', 'PA0430', 0, 0, 0, 6, 0 ) |
---|
1561 | ENDIF |
---|
1562 | |
---|
1563 | DEALLOCATE( topo_tmp ) |
---|
1564 | ! |
---|
1565 | !-- Finally, exchange topo_3d array again and if necessary set Neumann boundary |
---|
1566 | !-- condition in case of non-cyclic lateral boundaries. |
---|
1567 | CALL exchange_horiz_int( topo_3d, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
1568 | |
---|
1569 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
1570 | IF ( nys == 0 ) topo_3d(:,-1,:) = topo_3d(:,0,:) |
---|
1571 | IF ( nyn == ny ) topo_3d(:,ny+1,:) = topo_3d(:,ny,:) |
---|
1572 | ENDIF |
---|
1573 | |
---|
1574 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
1575 | IF ( nxl == 0 ) topo_3d(:,:,-1) = topo_3d(:,:,0) |
---|
1576 | IF ( nxr == nx ) topo_3d(:,:,nx+1) = topo_3d(:,:,nx) |
---|
1577 | ENDIF |
---|
1578 | ! |
---|
1579 | !-- Exchange building ID and type. Note, building_type is an one-byte variable. |
---|
1580 | IF ( building_id_f%from_file ) & |
---|
1581 | CALL exchange_horiz_2d_int( building_id_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
1582 | IF ( building_type_f%from_file ) & |
---|
1583 | CALL exchange_horiz_2d_byte( building_type_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
1584 | |
---|
1585 | END SUBROUTINE filter_topography |
---|
1586 | |
---|
1587 | |
---|
1588 | ! Description: |
---|
1589 | ! -----------------------------------------------------------------------------! |
---|
1590 | !> Reads topography information from file or sets generic topography. Moreover, |
---|
1591 | !> all topography-relevant topography arrays are initialized, and grid flags |
---|
1592 | !> are set. |
---|
1593 | !------------------------------------------------------------------------------! |
---|
1594 | SUBROUTINE init_topo( topo ) |
---|
1595 | |
---|
1596 | USE arrays_3d, & |
---|
1597 | ONLY: zw |
---|
1598 | |
---|
1599 | USE control_parameters, & |
---|
1600 | ONLY: bc_lr_cyc, bc_ns_cyc, building_height, building_length_x, & |
---|
1601 | building_length_y, building_wall_left, building_wall_south, & |
---|
1602 | canyon_height, canyon_wall_left, canyon_wall_south, & |
---|
1603 | canyon_width_x, canyon_width_y, dp_level_ind_b, dz, & |
---|
1604 | message_string, topography, topography_grid_convention, & |
---|
1605 | tunnel_height, tunnel_length, tunnel_width_x, tunnel_width_y, & |
---|
1606 | tunnel_wall_depth |
---|
1607 | |
---|
1608 | USE exchange_horiz_mod, & |
---|
1609 | ONLY: exchange_horiz_int |
---|
1610 | |
---|
1611 | USE grid_variables, & |
---|
1612 | ONLY: dx, dy |
---|
1613 | |
---|
1614 | USE indices, & |
---|
1615 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nz, & |
---|
1616 | nzb, nzt |
---|
1617 | |
---|
1618 | USE kinds |
---|
1619 | |
---|
1620 | USE netcdf_data_input_mod, & |
---|
1621 | ONLY: buildings_f, terrain_height_f |
---|
1622 | |
---|
1623 | USE pegrid |
---|
1624 | |
---|
1625 | IMPLICIT NONE |
---|
1626 | |
---|
1627 | INTEGER(iwp) :: bh !< temporary vertical index of building height |
---|
1628 | INTEGER(iwp) :: ngp_bx !< grid point number of building size along x |
---|
1629 | INTEGER(iwp) :: ngp_by !< grid point number of building size along y |
---|
1630 | INTEGER(iwp) :: index_left_bwall !< index for left building wall |
---|
1631 | INTEGER(iwp) :: index_right_bwall !< index for right building wall |
---|
1632 | INTEGER(iwp) :: index_north_bwall !< index for north building wall |
---|
1633 | INTEGER(iwp) :: index_south_bwall !< index for south building wall |
---|
1634 | INTEGER(iwp) :: ch !< temporary vertical index for canyon height |
---|
1635 | INTEGER(iwp) :: ngp_cx !< grid point number of canyon size along x |
---|
1636 | INTEGER(iwp) :: ngp_cy !< grid point number of canyon size along y |
---|
1637 | INTEGER(iwp) :: index_left_cwall !< index for left canyon wall |
---|
1638 | INTEGER(iwp) :: index_right_cwall !< index for right canyon wall |
---|
1639 | INTEGER(iwp) :: index_north_cwall !< index for north canyon wall |
---|
1640 | INTEGER(iwp) :: index_south_cwall !< index for south canyon wall |
---|
1641 | INTEGER(iwp) :: i !< index variable along x |
---|
1642 | INTEGER(iwp) :: j !< index variable along y |
---|
1643 | INTEGER(iwp) :: k !< index variable along z |
---|
1644 | INTEGER(iwp) :: hv_in !< heavyside function to model inner tunnel surface |
---|
1645 | INTEGER(iwp) :: hv_out !< heavyside function to model outer tunnel surface |
---|
1646 | INTEGER(iwp) :: txe_out !< end position of outer tunnel wall in x |
---|
1647 | INTEGER(iwp) :: txs_out !< start position of outer tunnel wall in x |
---|
1648 | INTEGER(iwp) :: tye_out !< end position of outer tunnel wall in y |
---|
1649 | INTEGER(iwp) :: tys_out !< start position of outer tunnel wall in y |
---|
1650 | INTEGER(iwp) :: txe_in !< end position of inner tunnel wall in x |
---|
1651 | INTEGER(iwp) :: txs_in !< start position of inner tunnel wall in x |
---|
1652 | INTEGER(iwp) :: tye_in !< end position of inner tunnel wall in y |
---|
1653 | INTEGER(iwp) :: tys_in !< start position of inner tunnel wall in y |
---|
1654 | INTEGER(iwp) :: td !< tunnel wall depth |
---|
1655 | INTEGER(iwp) :: th !< height of outer tunnel wall |
---|
1656 | |
---|
1657 | INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: nzb_local !< index for topography top at cell-center |
---|
1658 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo !< input array for 3D topography and dummy array for setting "outer"-flags |
---|
1659 | ! |
---|
1660 | !-- Check for correct setting of the namelist parameter topography. If |
---|
1661 | !-- topography information is read from file but topography = 'flat', |
---|
1662 | !-- initialization does not work properly. |
---|
1663 | IF ( ( buildings_f%from_file .OR. terrain_height_f%from_file ) .AND. & |
---|
1664 | TRIM( topography ) /= 'read_from_file' ) THEN |
---|
1665 | message_string = 'If topography information is provided (via ' // & |
---|
1666 | 'Netcdf or ASCII input) topography = ' // & |
---|
1667 | '"read_from_file" is required.' |
---|
1668 | CALL message( 'init_grid', 'PA0437', 1, 2, 0, 6, 0 ) |
---|
1669 | ENDIF |
---|
1670 | ! |
---|
1671 | !-- Set outer and inner index arrays for non-flat topography. |
---|
1672 | !-- Here consistency checks concerning domain size and periodicity are |
---|
1673 | !-- necessary. |
---|
1674 | !-- Within this SELECT CASE structure only nzb_local is initialized |
---|
1675 | !-- individually depending on the chosen topography type, all other index |
---|
1676 | !-- arrays are initialized further below. |
---|
1677 | SELECT CASE ( TRIM( topography ) ) |
---|
1678 | |
---|
1679 | CASE ( 'flat' ) |
---|
1680 | ! |
---|
1681 | !-- Initialilize 3D topography array, used later for initializing flags |
---|
1682 | topo(nzb+1:nzt+1,:,:) = IBSET( topo(nzb+1:nzt+1,:,:), 0 ) |
---|
1683 | |
---|
1684 | CASE ( 'closed_channel' ) |
---|
1685 | ! |
---|
1686 | !-- Initialilize 3D topography array, used later for initializing flags |
---|
1687 | topo(nzb+1:nzt,:,:) = IBSET( topo(nzb+1:nzt,:,:), 0 ) |
---|
1688 | |
---|
1689 | CASE ( 'single_building' ) |
---|
1690 | ! |
---|
1691 | !-- Single rectangular building, by default centered in the middle of the |
---|
1692 | !-- total domain |
---|
1693 | ngp_bx = NINT( building_length_x / dx ) |
---|
1694 | ngp_by = NINT( building_length_y / dy ) |
---|
1695 | bh = MINLOC( ABS( zw - building_height ), 1 ) - 1 |
---|
1696 | IF ( ABS( zw(bh) - building_height ) == & |
---|
1697 | ABS( zw(bh+1) - building_height ) ) bh = bh + 1 |
---|
1698 | IF ( building_wall_left == 9999999.9_wp ) THEN |
---|
1699 | building_wall_left = ( nx + 1 - ngp_bx ) / 2 * dx |
---|
1700 | ENDIF |
---|
1701 | index_left_bwall = NINT( building_wall_left / dx ) |
---|
1702 | index_right_bwall = index_left_bwall + ngp_bx |
---|
1703 | |
---|
1704 | IF ( building_wall_south == 9999999.9_wp ) THEN |
---|
1705 | building_wall_south = ( ny + 1 - ngp_by ) / 2 * dy |
---|
1706 | ENDIF |
---|
1707 | index_south_bwall = NINT( building_wall_south / dy ) |
---|
1708 | index_north_bwall = index_south_bwall + ngp_by |
---|
1709 | |
---|
1710 | ! |
---|
1711 | !-- Building size has to meet some requirements |
---|
1712 | IF ( ( index_left_bwall < 1 ) .OR. ( index_right_bwall > nx-1 ) .OR. & |
---|
1713 | ( index_right_bwall < index_left_bwall+3 ) .OR. & |
---|
1714 | ( index_south_bwall < 1 ) .OR. ( index_north_bwall > ny-1 ) .OR.& |
---|
1715 | ( index_north_bwall < index_south_bwall+3 ) ) THEN |
---|
1716 | WRITE( message_string, * ) 'inconsistent building parameters:', & |
---|
1717 | '&index_left_bwall=', index_left_bwall, & |
---|
1718 | 'index_right_bwall=', index_right_bwall, & |
---|
1719 | 'index_south_bwall=', index_south_bwall, & |
---|
1720 | 'index_north_bwall=', index_north_bwall, & |
---|
1721 | 'nx=', nx, 'ny=', ny |
---|
1722 | CALL message( 'init_grid', 'PA0203', 1, 2, 0, 6, 0 ) |
---|
1723 | ENDIF |
---|
1724 | |
---|
1725 | ALLOCATE( nzb_local(nysg:nyng,nxlg:nxrg) ) |
---|
1726 | nzb_local = 0 |
---|
1727 | ! |
---|
1728 | !-- Define the building. |
---|
1729 | IF ( index_left_bwall <= nxr .AND. index_right_bwall >= nxl .AND. & |
---|
1730 | index_south_bwall <= nyn .AND. index_north_bwall >= nys ) & |
---|
1731 | nzb_local(MAX(nys,index_south_bwall):MIN(nyn,index_north_bwall), & |
---|
1732 | MAX(nxl,index_left_bwall):MIN(nxr,index_right_bwall)) = bh |
---|
1733 | ! |
---|
1734 | !-- Set bit array on basis of nzb_local |
---|
1735 | DO i = nxl, nxr |
---|
1736 | DO j = nys, nyn |
---|
1737 | topo(nzb_local(j,i)+1:nzt+1,j,i) = & |
---|
1738 | IBSET( topo(nzb_local(j,i)+1:nzt+1,j,i), 0 ) |
---|
1739 | ENDDO |
---|
1740 | ENDDO |
---|
1741 | |
---|
1742 | DEALLOCATE( nzb_local ) |
---|
1743 | |
---|
1744 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
1745 | ! |
---|
1746 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
1747 | !-- boundary conditions for topography. |
---|
1748 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
1749 | IF ( nys == 0 ) THEN |
---|
1750 | DO i = 1, nbgp |
---|
1751 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
1752 | ENDDO |
---|
1753 | ENDIF |
---|
1754 | IF ( nyn == ny ) THEN |
---|
1755 | DO i = 1, nbgp |
---|
1756 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
1757 | ENDDO |
---|
1758 | ENDIF |
---|
1759 | ENDIF |
---|
1760 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
1761 | IF ( nxl == 0 ) THEN |
---|
1762 | DO i = 1, nbgp |
---|
1763 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
1764 | ENDDO |
---|
1765 | ENDIF |
---|
1766 | IF ( nxr == nx ) THEN |
---|
1767 | DO i = 1, nbgp |
---|
1768 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
1769 | ENDDO |
---|
1770 | ENDIF |
---|
1771 | ENDIF |
---|
1772 | |
---|
1773 | CASE ( 'single_street_canyon' ) |
---|
1774 | ! |
---|
1775 | !-- Single quasi-2D street canyon of infinite length in x or y direction. |
---|
1776 | !-- The canyon is centered in the other direction by default. |
---|
1777 | IF ( canyon_width_x /= 9999999.9_wp ) THEN |
---|
1778 | ! |
---|
1779 | !-- Street canyon in y direction |
---|
1780 | ngp_cx = NINT( canyon_width_x / dx ) |
---|
1781 | IF ( canyon_wall_left == 9999999.9_wp ) THEN |
---|
1782 | canyon_wall_left = ( nx + 1 - ngp_cx ) / 2 * dx |
---|
1783 | ENDIF |
---|
1784 | index_left_cwall= NINT( canyon_wall_left / dx ) |
---|
1785 | index_right_cwall= index_left_cwall+ ngp_cx |
---|
1786 | ELSEIF ( canyon_width_y /= 9999999.9_wp ) THEN |
---|
1787 | ! |
---|
1788 | !-- Street canyon in x direction |
---|
1789 | ngp_cy = NINT( canyon_width_y / dy ) |
---|
1790 | IF ( canyon_wall_south == 9999999.9_wp ) THEN |
---|
1791 | canyon_wall_south = ( ny + 1 - ngp_cy ) / 2 * dy |
---|
1792 | ENDIF |
---|
1793 | index_south_cwall = NINT( canyon_wall_south / dy ) |
---|
1794 | index_north_cwall = index_south_cwall + ngp_cy |
---|
1795 | |
---|
1796 | ELSE |
---|
1797 | |
---|
1798 | message_string = 'no street canyon width given' |
---|
1799 | CALL message( 'init_grid', 'PA0204', 1, 2, 0, 6, 0 ) |
---|
1800 | |
---|
1801 | ENDIF |
---|
1802 | |
---|
1803 | ch = MINLOC( ABS( zw - canyon_height ), 1 ) - 1 |
---|
1804 | IF ( ABS( zw(ch) - canyon_height ) == & |
---|
1805 | ABS( zw(ch+1) - canyon_height ) ) ch = ch + 1 |
---|
1806 | dp_level_ind_b = ch |
---|
1807 | ! |
---|
1808 | !-- Street canyon size has to meet some requirements |
---|
1809 | IF ( canyon_width_x /= 9999999.9_wp ) THEN |
---|
1810 | IF ( ( index_left_cwall< 1 ) .OR. ( index_right_cwall> nx-1 ) .OR.& |
---|
1811 | ( ngp_cx < 3 ) ) THEN |
---|
1812 | WRITE( message_string, * ) 'inconsistent canyon parameters:', & |
---|
1813 | '&index_left_cwall=', index_left_cwall, & |
---|
1814 | ' index_right_cwall=', index_right_cwall, & |
---|
1815 | ' ngp_cx=', ngp_cx, & |
---|
1816 | ' ch=', ch, ' nx=', nx, ' ny=', ny |
---|
1817 | CALL message( 'init_grid', 'PA0205', 1, 2, 0, 6, 0 ) |
---|
1818 | ENDIF |
---|
1819 | ELSEIF ( canyon_width_y /= 9999999.9_wp ) THEN |
---|
1820 | IF ( ( index_south_cwall < 1 ) .OR. & |
---|
1821 | ( index_north_cwall > ny-1 ) .OR. ( ngp_cy < 3 ) ) THEN |
---|
1822 | WRITE( message_string, * ) 'inconsistent canyon parameters:', & |
---|
1823 | '&index_south_cwall=', index_south_cwall, & |
---|
1824 | ' index_north_cwall=', index_north_cwall, & |
---|
1825 | ' ngp_cy=', ngp_cy, & |
---|
1826 | ' ch=', ch, ' nx=', nx, ' ny=', ny |
---|
1827 | CALL message( 'init_grid', 'PA0206', 1, 2, 0, 6, 0 ) |
---|
1828 | ENDIF |
---|
1829 | ENDIF |
---|
1830 | IF ( canyon_width_x /= 9999999.9_wp .AND. & |
---|
1831 | canyon_width_y /= 9999999.9_wp ) THEN |
---|
1832 | message_string = 'inconsistent canyon parameters:' // & |
---|
1833 | '&street canyon can only be oriented' // & |
---|
1834 | ' either in x- or in y-direction' |
---|
1835 | CALL message( 'init_grid', 'PA0207', 1, 2, 0, 6, 0 ) |
---|
1836 | ENDIF |
---|
1837 | |
---|
1838 | ALLOCATE( nzb_local(nysg:nyng,nxlg:nxrg) ) |
---|
1839 | nzb_local = ch |
---|
1840 | IF ( canyon_width_x /= 9999999.9_wp ) THEN |
---|
1841 | IF ( index_left_cwall<= nxr .AND. index_right_cwall>= nxl ) & |
---|
1842 | nzb_local(:,MAX(nxl,index_left_cwall+1):MIN(nxr,index_right_cwall-1)) = 0 |
---|
1843 | ELSEIF ( canyon_width_y /= 9999999.9_wp ) THEN |
---|
1844 | IF ( index_south_cwall <= nyn .AND. index_north_cwall >= nys ) & |
---|
1845 | nzb_local(MAX(nys,index_south_cwall+1):MIN(nyn,index_north_cwall-1),:) = 0 |
---|
1846 | ENDIF |
---|
1847 | ! |
---|
1848 | !-- Set bit array on basis of nzb_local |
---|
1849 | DO i = nxl, nxr |
---|
1850 | DO j = nys, nyn |
---|
1851 | topo(nzb_local(j,i)+1:nzt+1,j,i) = & |
---|
1852 | IBSET( topo(nzb_local(j,i)+1:nzt+1,j,i), 0 ) |
---|
1853 | ENDDO |
---|
1854 | ENDDO |
---|
1855 | DEALLOCATE( nzb_local ) |
---|
1856 | |
---|
1857 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
1858 | ! |
---|
1859 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
1860 | !-- boundary conditions for topography. |
---|
1861 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
1862 | IF ( nys == 0 ) THEN |
---|
1863 | DO i = 1, nbgp |
---|
1864 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
1865 | ENDDO |
---|
1866 | ENDIF |
---|
1867 | IF ( nyn == ny ) THEN |
---|
1868 | DO i = 1, nbgp |
---|
1869 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
1870 | ENDDO |
---|
1871 | ENDIF |
---|
1872 | ENDIF |
---|
1873 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
1874 | IF ( nxl == 0 ) THEN |
---|
1875 | DO i = 1, nbgp |
---|
1876 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
1877 | ENDDO |
---|
1878 | ENDIF |
---|
1879 | IF ( nxr == nx ) THEN |
---|
1880 | DO i = 1, nbgp |
---|
1881 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
1882 | ENDDO |
---|
1883 | ENDIF |
---|
1884 | ENDIF |
---|
1885 | |
---|
1886 | CASE ( 'tunnel' ) |
---|
1887 | |
---|
1888 | ! |
---|
1889 | !-- Tunnel height |
---|
1890 | IF ( tunnel_height == 9999999.9_wp ) THEN |
---|
1891 | th = zw( INT( 0.2 * nz) ) |
---|
1892 | ELSE |
---|
1893 | th = tunnel_height |
---|
1894 | ENDIF |
---|
1895 | ! |
---|
1896 | !-- Tunnel-wall depth |
---|
1897 | IF ( tunnel_wall_depth == 9999999.9_wp ) THEN |
---|
1898 | td = MAX ( dx, dy, dz(1) ) |
---|
1899 | ELSE |
---|
1900 | td = tunnel_wall_depth |
---|
1901 | ENDIF |
---|
1902 | ! |
---|
1903 | !-- Check for tunnel width |
---|
1904 | IF ( tunnel_width_x == 9999999.9_wp .AND. & |
---|
1905 | tunnel_width_y == 9999999.9_wp ) THEN |
---|
1906 | message_string = 'No tunnel width is given. ' |
---|
1907 | CALL message( 'init_grid', 'PA0280', 1, 2, 0, 6, 0 ) |
---|
1908 | ENDIF |
---|
1909 | IF ( tunnel_width_x /= 9999999.9_wp .AND. & |
---|
1910 | tunnel_width_y /= 9999999.9_wp ) THEN |
---|
1911 | message_string = 'Inconsistent tunnel parameters:' // & |
---|
1912 | 'tunnel can only be oriented' // & |
---|
1913 | 'either in x- or in y-direction.' |
---|
1914 | CALL message( 'init_grid', 'PA0281', 1, 2, 0, 6, 0 ) |
---|
1915 | ENDIF |
---|
1916 | ! |
---|
1917 | !-- Check for too small tunnel width in x- and y-direction |
---|
1918 | IF ( tunnel_width_x /= 9999999.9_wp .AND. & |
---|
1919 | tunnel_width_x - 2.0_wp * td <= 2.0_wp * dx ) THEN |
---|
1920 | message_string = 'tunnel_width_x too small' |
---|
1921 | CALL message( 'init_grid', 'PA0175', 1, 2, 0, 6, 0 ) |
---|
1922 | ENDIF |
---|
1923 | IF ( tunnel_width_y /= 9999999.9_wp .AND. & |
---|
1924 | tunnel_width_y - 2.0_wp * td <= 2.0_wp * dy ) THEN |
---|
1925 | message_string = 'tunnel_width_y too small' |
---|
1926 | CALL message( 'init_grid', 'PA0455', 1, 2, 0, 6, 0 ) |
---|
1927 | ENDIF |
---|
1928 | ! |
---|
1929 | !-- Check for too large tunnel width. |
---|
1930 | !-- Tunnel axis along y. |
---|
1931 | IF ( tunnel_width_x /= 9999999.9_wp ) THEN |
---|
1932 | IF ( tunnel_width_x > ( nx + 1 ) * dx ) THEN |
---|
1933 | message_string = 'tunnel_width_x too large' |
---|
1934 | CALL message( 'init_grid', 'PA0282', 1, 2, 0, 6, 0 ) |
---|
1935 | ENDIF |
---|
1936 | |
---|
1937 | txs_out = INT( ( nx + 1 ) * 0.5_wp * dx - tunnel_width_x * 0.5_wp ) |
---|
1938 | txe_out = INT( ( nx + 1 ) * 0.5_wp * dx + tunnel_width_x * 0.5_wp ) |
---|
1939 | txs_in = INT( ( nx + 1 ) * 0.5_wp * dx - & |
---|
1940 | ( tunnel_width_x * 0.5_wp - td ) ) |
---|
1941 | txe_in = INT( ( nx + 1 ) * 0.5_wp * dx + & |
---|
1942 | ( tunnel_width_x * 0.5_wp - td ) ) |
---|
1943 | |
---|
1944 | tys_out = INT( ( ny + 1 ) * 0.5_wp * dy - tunnel_length * 0.5_wp ) |
---|
1945 | tye_out = INT( ( ny + 1 ) * 0.5_wp * dy + tunnel_length * 0.5_wp ) |
---|
1946 | tys_in = tys_out |
---|
1947 | tye_in = tye_out |
---|
1948 | ENDIF |
---|
1949 | ! |
---|
1950 | !-- Tunnel axis along x. |
---|
1951 | IF ( tunnel_width_y /= 9999999.9_wp ) THEN |
---|
1952 | IF ( tunnel_width_y > ( ny + 1 ) * dy ) THEN |
---|
1953 | message_string = 'tunnel_width_y too large' |
---|
1954 | CALL message( 'init_grid', 'PA0456', 1, 2, 0, 6, 0 ) |
---|
1955 | ENDIF |
---|
1956 | |
---|
1957 | txs_out = INT( ( nx + 1 ) * 0.5_wp * dx - tunnel_length * 0.5_wp ) |
---|
1958 | txe_out = INT( ( nx + 1 ) * 0.5_wp * dx + tunnel_length * 0.5_wp ) |
---|
1959 | txs_in = txs_out |
---|
1960 | txe_in = txe_out |
---|
1961 | |
---|
1962 | tys_out = INT( ( ny + 1 ) * 0.5_wp * dy - tunnel_width_y * 0.5_wp ) |
---|
1963 | tye_out = INT( ( ny + 1 ) * 0.5_wp * dy + tunnel_width_y * 0.5_wp ) |
---|
1964 | tys_in = INT( ( ny + 1 ) * 0.5_wp * dy - & |
---|
1965 | ( tunnel_width_y * 0.5_wp - td ) ) |
---|
1966 | tye_in = INT( ( ny + 1 ) * 0.5_wp * dy + & |
---|
1967 | ( tunnel_width_y * 0.5_wp - td ) ) |
---|
1968 | ENDIF |
---|
1969 | |
---|
1970 | topo = 0 |
---|
1971 | DO i = nxl, nxr |
---|
1972 | DO j = nys, nyn |
---|
1973 | ! |
---|
1974 | !-- Use heaviside function to model outer tunnel surface |
---|
1975 | hv_out = th * 0.5_wp * & |
---|
1976 | ( ( SIGN( 1.0_wp, i * dx - txs_out ) + 1.0_wp ) & |
---|
1977 | - ( SIGN( 1.0_wp, i * dx - txe_out ) + 1.0_wp ) ) |
---|
1978 | |
---|
1979 | hv_out = hv_out * 0.5_wp * & |
---|
1980 | ( ( SIGN( 1.0_wp, j * dy - tys_out ) + 1.0_wp ) & |
---|
1981 | - ( SIGN( 1.0_wp, j * dy - tye_out ) + 1.0_wp ) ) |
---|
1982 | ! |
---|
1983 | !-- Use heaviside function to model inner tunnel surface |
---|
1984 | hv_in = ( th - td ) * 0.5_wp * & |
---|
1985 | ( ( SIGN( 1.0_wp, i * dx - txs_in ) + 1.0_wp ) & |
---|
1986 | - ( SIGN( 1.0_wp, i * dx - txe_in ) + 1.0_wp ) ) |
---|
1987 | |
---|
1988 | hv_in = hv_in * 0.5_wp * & |
---|
1989 | ( ( SIGN( 1.0_wp, j * dy - tys_in ) + 1.0_wp ) & |
---|
1990 | - ( SIGN( 1.0_wp, j * dy - tye_in ) + 1.0_wp ) ) |
---|
1991 | ! |
---|
1992 | !-- Set flags at x-y-positions without any tunnel surface |
---|
1993 | IF ( hv_out - hv_in == 0.0_wp ) THEN |
---|
1994 | topo(nzb+1:nzt+1,j,i) = IBSET( topo(nzb+1:nzt+1,j,i), 0 ) |
---|
1995 | ! |
---|
1996 | !-- Set flags at x-y-positions with tunnel surfaces |
---|
1997 | ELSE |
---|
1998 | DO k = nzb + 1, nzt + 1 |
---|
1999 | ! |
---|
2000 | !-- Inner tunnel |
---|
2001 | IF ( hv_out - hv_in == th ) THEN |
---|
2002 | IF ( zw(k) <= hv_out ) THEN |
---|
2003 | topo(k,j,i) = IBCLR( topo(k,j,i), 0 ) |
---|
2004 | ELSE |
---|
2005 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
2006 | ENDIF |
---|
2007 | ENDIF |
---|
2008 | ! |
---|
2009 | !-- Lateral tunnel walls |
---|
2010 | IF ( hv_out - hv_in == td ) THEN |
---|
2011 | IF ( zw(k) <= hv_in ) THEN |
---|
2012 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
2013 | ELSEIF ( zw(k) > hv_in .AND. zw(k) <= hv_out ) THEN |
---|
2014 | topo(k,j,i) = IBCLR( topo(k,j,i), 0 ) |
---|
2015 | ELSEIF ( zw(k) > hv_out ) THEN |
---|
2016 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
2017 | ENDIF |
---|
2018 | ENDIF |
---|
2019 | ENDDO |
---|
2020 | ENDIF |
---|
2021 | ENDDO |
---|
2022 | ENDDO |
---|
2023 | |
---|
2024 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2025 | ! |
---|
2026 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
2027 | !-- boundary conditions for topography. |
---|
2028 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
2029 | IF ( nys == 0 ) THEN |
---|
2030 | DO i = 1, nbgp |
---|
2031 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
2032 | ENDDO |
---|
2033 | ENDIF |
---|
2034 | IF ( nyn == ny ) THEN |
---|
2035 | DO i = 1, nbgp |
---|
2036 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
2037 | ENDDO |
---|
2038 | ENDIF |
---|
2039 | ENDIF |
---|
2040 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
2041 | IF ( nxl == 0 ) THEN |
---|
2042 | DO i = 1, nbgp |
---|
2043 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
2044 | ENDDO |
---|
2045 | ENDIF |
---|
2046 | IF ( nxr == nx ) THEN |
---|
2047 | DO i = 1, nbgp |
---|
2048 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
2049 | ENDDO |
---|
2050 | ENDIF |
---|
2051 | ENDIF |
---|
2052 | |
---|
2053 | CASE ( 'read_from_file' ) |
---|
2054 | ! |
---|
2055 | !-- Note, topography information have been already read. |
---|
2056 | !-- If required, further process topography, i.e. reference buildings on |
---|
2057 | !-- top of orography and set temporary 3D topography array, which is |
---|
2058 | !-- used later to set grid flags. Calling of this rouinte is also |
---|
2059 | !-- required in case of ASCII input, even though no distinction between |
---|
2060 | !-- terrain- and building height is made in this case. |
---|
2061 | CALL process_topography( topo ) |
---|
2062 | ! |
---|
2063 | !-- Filter holes resolved by only one grid-point |
---|
2064 | CALL filter_topography( topo ) |
---|
2065 | ! |
---|
2066 | !-- Exchange ghost-points, as well as add cyclic or Neumann boundary |
---|
2067 | !-- conditions. |
---|
2068 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2069 | ! |
---|
2070 | !-- Set lateral boundary conditions for topography on all ghost layers |
---|
2071 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
2072 | IF ( nys == 0 ) THEN |
---|
2073 | DO i = 1, nbgp |
---|
2074 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
2075 | ENDDO |
---|
2076 | ENDIF |
---|
2077 | IF ( nyn == ny ) THEN |
---|
2078 | DO i = 1, nbgp |
---|
2079 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
2080 | ENDDO |
---|
2081 | ENDIF |
---|
2082 | ENDIF |
---|
2083 | |
---|
2084 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
2085 | IF ( nxl == 0 ) THEN |
---|
2086 | DO i = 1, nbgp |
---|
2087 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
2088 | ENDDO |
---|
2089 | ENDIF |
---|
2090 | IF ( nxr == nx ) THEN |
---|
2091 | DO i = 1, nbgp |
---|
2092 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
2093 | ENDDO |
---|
2094 | ENDIF |
---|
2095 | ENDIF |
---|
2096 | |
---|
2097 | |
---|
2098 | CASE DEFAULT |
---|
2099 | ! |
---|
2100 | !-- The DEFAULT case is reached either if the parameter topography |
---|
2101 | !-- contains a wrong character string or if the user has defined a special |
---|
2102 | !-- case in the user interface. There, the subroutine user_init_grid |
---|
2103 | !-- checks which of these two conditions applies. |
---|
2104 | CALL user_init_grid( topo ) |
---|
2105 | CALL filter_topography( topo ) |
---|
2106 | |
---|
2107 | END SELECT |
---|
2108 | ! |
---|
2109 | !-- Consistency checks and index array initialization are only required for |
---|
2110 | !-- non-flat topography. |
---|
2111 | IF ( TRIM( topography ) /= 'flat' ) THEN |
---|
2112 | ! |
---|
2113 | !-- In case of non-flat topography, check whether the convention how to |
---|
2114 | !-- define the topography grid has been set correctly, or whether the default |
---|
2115 | !-- is applicable. If this is not possible, abort. |
---|
2116 | IF ( TRIM( topography_grid_convention ) == ' ' ) THEN |
---|
2117 | IF ( TRIM( topography ) /= 'closed_channel' .AND. & |
---|
2118 | TRIM( topography ) /= 'single_building' .AND. & |
---|
2119 | TRIM( topography ) /= 'single_street_canyon' .AND. & |
---|
2120 | TRIM( topography ) /= 'tunnel' .AND. & |
---|
2121 | TRIM( topography ) /= 'read_from_file') THEN |
---|
2122 | !-- The default value is not applicable here, because it is only valid |
---|
2123 | !-- for the four standard cases 'single_building', |
---|
2124 | !-- 'single_street_canyon', 'tunnel' and 'read_from_file' |
---|
2125 | !-- defined in init_grid. |
---|
2126 | WRITE( message_string, * ) & |
---|
2127 | 'The value for "topography_grid_convention" ', & |
---|
2128 | 'is not set. Its default value is & only valid for ', & |
---|
2129 | '"topography" = ''single_building'', ''tunnel'' ', & |
---|
2130 | '''single_street_canyon'', ''closed_channel'' & or ', & |
---|
2131 | '''read_from_file''.', & |
---|
2132 | '& Choose ''cell_edge'' or ''cell_center''.' |
---|
2133 | CALL message( 'init_grid', 'PA0239', 1, 2, 0, 6, 0 ) |
---|
2134 | ELSE |
---|
2135 | !-- The default value is applicable here. |
---|
2136 | !-- Set convention according to topography. |
---|
2137 | IF ( TRIM( topography ) == 'single_building' .OR. & |
---|
2138 | TRIM( topography ) == 'single_street_canyon' ) THEN |
---|
2139 | topography_grid_convention = 'cell_edge' |
---|
2140 | ELSEIF ( TRIM( topography ) == 'read_from_file' .OR. & |
---|
2141 | TRIM( topography ) == 'tunnel') THEN |
---|
2142 | topography_grid_convention = 'cell_center' |
---|
2143 | ENDIF |
---|
2144 | ENDIF |
---|
2145 | ELSEIF ( TRIM( topography_grid_convention ) /= 'cell_edge' .AND. & |
---|
2146 | TRIM( topography_grid_convention ) /= 'cell_center' ) THEN |
---|
2147 | WRITE( message_string, * ) & |
---|
2148 | 'The value for "topography_grid_convention" is ', & |
---|
2149 | 'not recognized.& Choose ''cell_edge'' or ''cell_center''.' |
---|
2150 | CALL message( 'init_grid', 'PA0240', 1, 2, 0, 6, 0 ) |
---|
2151 | ENDIF |
---|
2152 | |
---|
2153 | |
---|
2154 | IF ( topography_grid_convention == 'cell_edge' ) THEN |
---|
2155 | ! |
---|
2156 | !-- The array nzb_local as defined using the 'cell_edge' convention |
---|
2157 | !-- describes the actual total size of topography which is defined at the |
---|
2158 | !-- cell edges where u=0 on the topography walls in x-direction and v=0 |
---|
2159 | !-- on the topography walls in y-direction. However, PALM uses individual |
---|
2160 | !-- arrays nzb_u|v|w|s_inner|outer that are based on nzb_s_inner. |
---|
2161 | !-- Therefore, the extent of topography in nzb_local is now reduced by |
---|
2162 | !-- 1dx at the E topography walls and by 1dy at the N topography walls |
---|
2163 | !-- to form the basis for nzb_s_inner. |
---|
2164 | !-- Note, the reverse memory access (i-j instead of j-i) is absolutely |
---|
2165 | !-- required at this point. |
---|
2166 | DO j = nys+1, nyn+1 |
---|
2167 | DO i = nxl-1, nxr |
---|
2168 | DO k = nzb, nzt+1 |
---|
2169 | IF ( BTEST( topo(k,j,i), 0 ) .OR. & |
---|
2170 | BTEST( topo(k,j,i+1), 0 ) ) & |
---|
2171 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
2172 | ENDDO |
---|
2173 | ENDDO |
---|
2174 | ENDDO |
---|
2175 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2176 | |
---|
2177 | DO i = nxl, nxr+1 |
---|
2178 | DO j = nys-1, nyn |
---|
2179 | DO k = nzb, nzt+1 |
---|
2180 | IF ( BTEST( topo(k,j,i), 0 ) .OR. & |
---|
2181 | BTEST( topo(k,j+1,i), 0 ) ) & |
---|
2182 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
2183 | ENDDO |
---|
2184 | ENDDO |
---|
2185 | ENDDO |
---|
2186 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2187 | |
---|
2188 | ENDIF |
---|
2189 | ENDIF |
---|
2190 | |
---|
2191 | |
---|
2192 | END SUBROUTINE init_topo |
---|
2193 | |
---|
2194 | SUBROUTINE set_topo_flags(topo) |
---|
2195 | |
---|
2196 | USE control_parameters, & |
---|
2197 | ONLY: bc_lr_cyc, bc_ns_cyc, constant_flux_layer, & |
---|
2198 | scalar_advec, topography, use_surface_fluxes, use_top_fluxes |
---|
2199 | |
---|
2200 | USE exchange_horiz_mod, & |
---|
2201 | ONLY: exchange_horiz_int |
---|
2202 | |
---|
2203 | USE indices, & |
---|
2204 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nzb, & |
---|
2205 | nzt, topo_top_ind, wall_flags_static_0, wall_flags_total_0 |
---|
2206 | |
---|
2207 | USE kinds |
---|
2208 | |
---|
2209 | IMPLICIT NONE |
---|
2210 | |
---|
2211 | INTEGER(iwp) :: i !< index variable along x |
---|
2212 | INTEGER(iwp) :: ibit !< integer bit position of topgraphy masking array |
---|
2213 | INTEGER(iwp) :: j !< index variable along y |
---|
2214 | INTEGER(iwp) :: k !< index variable along z |
---|
2215 | |
---|
2216 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo !< input array for 3D topography and dummy array for setting "outer"-flags |
---|
2217 | |
---|
2218 | ALLOCATE( wall_flags_static_0(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
2219 | wall_flags_static_0 = 0 |
---|
2220 | ! |
---|
2221 | !-- Set-up topography flags. First, set flags only for s, u, v and w-grid. |
---|
2222 | !-- Further special flags will be set in following loops. |
---|
2223 | DO i = nxl, nxr |
---|
2224 | DO j = nys, nyn |
---|
2225 | DO k = nzb, nzt+1 |
---|
2226 | ! |
---|
2227 | !-- scalar grid |
---|
2228 | IF ( BTEST( topo(k,j,i), 0 ) ) & |
---|
2229 | wall_flags_static_0(k,j,i) = IBSET( wall_flags_static_0(k,j,i), 0 ) |
---|
2230 | ! |
---|
2231 | !-- u grid |
---|
2232 | IF ( BTEST( topo(k,j,i), 0 ) .AND. & |
---|
2233 | BTEST( topo(k,j,i-1), 0 ) ) & |
---|
2234 | wall_flags_static_0(k,j,i) = IBSET( wall_flags_static_0(k,j,i), 1 ) |
---|
2235 | ! |
---|
2236 | !-- v grid |
---|
2237 | IF ( BTEST( topo(k,j,i), 0 ) .AND. & |
---|
2238 | BTEST( topo(k,j-1,i), 0 ) ) & |
---|
2239 | wall_flags_static_0(k,j,i) = IBSET( wall_flags_static_0(k,j,i), 2 ) |
---|
2240 | |
---|
2241 | ENDDO |
---|
2242 | |
---|
2243 | DO k = nzb, nzt |
---|
2244 | ! |
---|
2245 | !-- w grid |
---|
2246 | IF ( BTEST( topo(k,j,i), 0 ) .AND. & |
---|
2247 | BTEST( topo(k+1,j,i), 0 ) ) & |
---|
2248 | wall_flags_static_0(k,j,i) = IBSET( wall_flags_static_0(k,j,i), 3 ) |
---|
2249 | ENDDO |
---|
2250 | |
---|
2251 | IF ( topography /= 'closed_channel' ) THEN |
---|
2252 | wall_flags_static_0(nzt+1,j,i) = IBSET( wall_flags_static_0(nzt+1,j,i), 3 ) |
---|
2253 | ENDIF |
---|
2254 | |
---|
2255 | ENDDO |
---|
2256 | ENDDO |
---|
2257 | |
---|
2258 | CALL exchange_horiz_int( wall_flags_static_0, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2259 | |
---|
2260 | ! |
---|
2261 | !-- Set outer array for scalars to mask near-surface grid points. Note, on |
---|
2262 | !-- basis of flag 24 futher flags will be derived which are used to control |
---|
2263 | !-- production of subgrid TKE production near walls. |
---|
2264 | |
---|
2265 | ALLOCATE( wall_flags_total_0(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
2266 | wall_flags_total_0 = 0 |
---|
2267 | |
---|
2268 | DO i = nxl, nxr |
---|
2269 | DO j = nys, nyn |
---|
2270 | DO k = nzb, nzt+1 |
---|
2271 | wall_flags_total_0(k,j,i) = IOR( wall_flags_total_0(k,j,i), wall_flags_static_0(k,j,i) ) |
---|
2272 | ENDDO |
---|
2273 | ENDDO |
---|
2274 | ENDDO |
---|
2275 | |
---|
2276 | CALL exchange_horiz_int( wall_flags_total_0, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2277 | |
---|
2278 | DO i = nxl, nxr |
---|
2279 | DO j = nys, nyn |
---|
2280 | DO k = nzb, nzt+1 |
---|
2281 | IF ( BTEST( wall_flags_total_0(k,j-1,i), 0 ) .AND. & |
---|
2282 | BTEST( wall_flags_total_0(k,j+1,i), 0 ) .AND. & |
---|
2283 | BTEST( wall_flags_total_0(k,j,i-1), 0 ) .AND. & |
---|
2284 | BTEST( wall_flags_total_0(k,j,i+1), 0 ) .AND. & |
---|
2285 | BTEST( wall_flags_total_0(k,j-1,i-1), 0 ) .AND. & |
---|
2286 | BTEST( wall_flags_total_0(k,j+1,i-1), 0 ) .AND. & |
---|
2287 | BTEST( wall_flags_total_0(k,j-1,i+1), 0 ) .AND. & |
---|
2288 | BTEST( wall_flags_total_0(k,j+1,i+1), 0 ) ) & |
---|
2289 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 24 ) |
---|
2290 | ENDDO |
---|
2291 | ENDDO |
---|
2292 | ENDDO |
---|
2293 | ! |
---|
2294 | !-- Set further special flags |
---|
2295 | DO i = nxl, nxr |
---|
2296 | DO j = nys, nyn |
---|
2297 | DO k = nzb, nzt+1 |
---|
2298 | ! |
---|
2299 | !-- scalar grid, former nzb_diff_s_inner. |
---|
2300 | !-- Note, use this flag also to mask topography in diffusion_u and |
---|
2301 | !-- diffusion_v along the vertical direction. In case of |
---|
2302 | !-- use_surface_fluxes, fluxes are calculated via MOST, else, simple |
---|
2303 | !-- gradient approach is applied. Please note, in case of u- and v- |
---|
2304 | !-- diffuison, a small error is made at edges (on the east side for u, |
---|
2305 | !-- at the north side for v), since topography on scalar grid point |
---|
2306 | !-- is used instead of topography on u/v-grid. As number of topography grid |
---|
2307 | !-- points on uv-grid is different than s-grid, different number of |
---|
2308 | !-- surface elements would be required. In order to avoid this, |
---|
2309 | !-- treat edges (u(k,j,i+1)) simply by a gradient approach, i.e. these |
---|
2310 | !-- points are not masked within diffusion_u. Tests had shown that the |
---|
2311 | !-- effect on the flow is negligible. |
---|
2312 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
2313 | IF ( BTEST( wall_flags_total_0(k,j,i), 0 ) ) & |
---|
2314 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 8 ) |
---|
2315 | ELSE |
---|
2316 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 8 ) |
---|
2317 | ENDIF |
---|
2318 | |
---|
2319 | ENDDO |
---|
2320 | ! |
---|
2321 | !-- Special flag to control vertical diffusion at model top - former |
---|
2322 | !-- nzt_diff |
---|
2323 | wall_flags_total_0(:,j,i) = IBSET( wall_flags_total_0(:,j,i), 9 ) |
---|
2324 | IF ( use_top_fluxes ) & |
---|
2325 | wall_flags_total_0(nzt+1,j,i) = IBCLR( wall_flags_total_0(nzt+1,j,i), 9 ) |
---|
2326 | |
---|
2327 | |
---|
2328 | DO k = nzb+1, nzt |
---|
2329 | ! |
---|
2330 | !-- Special flag on u grid, former nzb_u_inner + 1, required |
---|
2331 | !-- for disturb_field and initialization. Do not disturb directly at |
---|
2332 | !-- topography, as well as initialize u with zero one grid point outside |
---|
2333 | !-- of topography. |
---|
2334 | IF ( BTEST( wall_flags_total_0(k-1,j,i), 1 ) .AND. & |
---|
2335 | BTEST( wall_flags_total_0(k,j,i), 1 ) .AND. & |
---|
2336 | BTEST( wall_flags_total_0(k+1,j,i), 1 ) ) & |
---|
2337 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 20 ) |
---|
2338 | ! |
---|
2339 | !-- Special flag on v grid, former nzb_v_inner + 1, required |
---|
2340 | !-- for disturb_field and initialization. Do not disturb directly at |
---|
2341 | !-- topography, as well as initialize v with zero one grid point outside |
---|
2342 | !-- of topography. |
---|
2343 | IF ( BTEST( wall_flags_total_0(k-1,j,i), 2 ) .AND. & |
---|
2344 | BTEST( wall_flags_total_0(k,j,i), 2 ) .AND. & |
---|
2345 | BTEST( wall_flags_total_0(k+1,j,i), 2 ) ) & |
---|
2346 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 21 ) |
---|
2347 | ! |
---|
2348 | !-- Special flag on scalar grid, former nzb_s_inner+1. Used for |
---|
2349 | !-- lpm_sgs_tke |
---|
2350 | IF ( BTEST( wall_flags_total_0(k,j,i), 0 ) .AND. & |
---|
2351 | BTEST( wall_flags_total_0(k-1,j,i), 0 ) .AND. & |
---|
2352 | BTEST( wall_flags_total_0(k+1,j,i), 0 ) ) & |
---|
2353 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 25 ) |
---|
2354 | ! |
---|
2355 | !-- Special flag on scalar grid, nzb_diff_s_outer - 1, required in |
---|
2356 | !-- in production_e |
---|
2357 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
2358 | IF ( BTEST( wall_flags_total_0(k,j,i), 24 ) .AND. & |
---|
2359 | BTEST( wall_flags_total_0(k-1,j,i), 24 ) .AND. & |
---|
2360 | BTEST( wall_flags_total_0(k+1,j,i), 0 ) ) & |
---|
2361 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 29 ) |
---|
2362 | ELSE |
---|
2363 | IF ( BTEST( wall_flags_total_0(k,j,i), 0 ) ) & |
---|
2364 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 29 ) |
---|
2365 | ENDIF |
---|
2366 | ! |
---|
2367 | !-- Special flag on scalar grid, nzb_diff_s_outer - 1, required in |
---|
2368 | !-- in production_e |
---|
2369 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
2370 | IF ( BTEST( wall_flags_total_0(k,j,i), 0 ) .AND. & |
---|
2371 | BTEST( wall_flags_total_0(k-1,j,i), 0 ) .AND. & |
---|
2372 | BTEST( wall_flags_total_0(k+1,j,i), 0 ) ) & |
---|
2373 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 30 ) |
---|
2374 | ELSE |
---|
2375 | IF ( BTEST( wall_flags_total_0(k,j,i), 0 ) ) & |
---|
2376 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 30 ) |
---|
2377 | ENDIF |
---|
2378 | ENDDO |
---|
2379 | ! |
---|
2380 | !-- Flags indicating downward facing walls |
---|
2381 | DO k = nzb+1, nzt+1 |
---|
2382 | ! |
---|
2383 | !-- Scalar grid |
---|
2384 | IF ( BTEST( wall_flags_total_0(k-1,j,i), 0 ) .AND. & |
---|
2385 | .NOT. BTEST( wall_flags_total_0(k,j,i), 0 ) ) & |
---|
2386 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 13 ) |
---|
2387 | ! |
---|
2388 | !-- Downward facing wall on u grid |
---|
2389 | IF ( BTEST( wall_flags_total_0(k-1,j,i), 1 ) .AND. & |
---|
2390 | .NOT. BTEST( wall_flags_total_0(k,j,i), 1 ) ) & |
---|
2391 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 15 ) |
---|
2392 | ! |
---|
2393 | !-- Downward facing wall on v grid |
---|
2394 | IF ( BTEST( wall_flags_total_0(k-1,j,i), 2 ) .AND. & |
---|
2395 | .NOT. BTEST( wall_flags_total_0(k,j,i), 2 ) ) & |
---|
2396 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 17 ) |
---|
2397 | ! |
---|
2398 | !-- Downward facing wall on w grid |
---|
2399 | IF ( BTEST( wall_flags_total_0(k-1,j,i), 3 ) .AND. & |
---|
2400 | .NOT. BTEST( wall_flags_total_0(k,j,i), 3 ) ) & |
---|
2401 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 19 ) |
---|
2402 | ENDDO |
---|
2403 | ! |
---|
2404 | !-- Flags indicating upward facing walls |
---|
2405 | DO k = nzb, nzt |
---|
2406 | ! |
---|
2407 | !-- Upward facing wall on scalar grid |
---|
2408 | IF ( .NOT. BTEST( wall_flags_total_0(k,j,i), 0 ) .AND. & |
---|
2409 | BTEST( wall_flags_total_0(k+1,j,i), 0 ) ) & |
---|
2410 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 12 ) |
---|
2411 | ! |
---|
2412 | !-- Upward facing wall on u grid |
---|
2413 | IF ( .NOT. BTEST( wall_flags_total_0(k,j,i), 1 ) .AND. & |
---|
2414 | BTEST( wall_flags_total_0(k+1,j,i), 1 ) ) & |
---|
2415 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 14 ) |
---|
2416 | |
---|
2417 | ! |
---|
2418 | !-- Upward facing wall on v grid |
---|
2419 | IF ( .NOT. BTEST( wall_flags_total_0(k,j,i), 2 ) .AND. & |
---|
2420 | BTEST( wall_flags_total_0(k+1,j,i), 2 ) ) & |
---|
2421 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 16 ) |
---|
2422 | |
---|
2423 | ! |
---|
2424 | !-- Upward facing wall on w grid |
---|
2425 | IF ( .NOT. BTEST( wall_flags_total_0(k,j,i), 3 ) .AND. & |
---|
2426 | BTEST( wall_flags_total_0(k+1,j,i), 3 ) ) & |
---|
2427 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 18 ) |
---|
2428 | ! |
---|
2429 | !-- Special flag on scalar grid, former nzb_s_inner |
---|
2430 | IF ( BTEST( wall_flags_total_0(k,j,i), 0 ) .OR. & |
---|
2431 | BTEST( wall_flags_total_0(k,j,i), 12 ) .OR. & |
---|
2432 | BTEST( wall_flags_total_0(k,j,i), 13 ) ) & |
---|
2433 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 22 ) |
---|
2434 | ! |
---|
2435 | !-- Special flag on scalar grid, nzb_diff_s_inner - 1, required for |
---|
2436 | !-- flow_statistics |
---|
2437 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
2438 | IF ( BTEST( wall_flags_total_0(k,j,i), 0 ) .AND. & |
---|
2439 | BTEST( wall_flags_total_0(k+1,j,i), 0 ) ) & |
---|
2440 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 23 ) |
---|
2441 | ELSE |
---|
2442 | IF ( BTEST( wall_flags_total_0(k,j,i), 22 ) ) & |
---|
2443 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 23 ) |
---|
2444 | ENDIF |
---|
2445 | |
---|
2446 | |
---|
2447 | ENDDO |
---|
2448 | wall_flags_total_0(nzt+1,j,i) = IBSET( wall_flags_total_0(nzt+1,j,i), 22 ) |
---|
2449 | wall_flags_total_0(nzt+1,j,i) = IBSET( wall_flags_total_0(nzt+1,j,i), 23 ) |
---|
2450 | ! |
---|
2451 | !-- Set flags indicating that topography is close by in horizontal |
---|
2452 | !-- direction, i.e. flags that infold the topography. These will be used |
---|
2453 | !-- to set advection flags for passive scalars, where due to large |
---|
2454 | !-- gradients near buildings stationary numerical oscillations can produce |
---|
2455 | !-- unrealistically high concentrations. This is only necessary if |
---|
2456 | !-- WS-scheme is applied for scalar advection. Note, these flags will be |
---|
2457 | !-- only used for passive scalars such as chemical species or aerosols. |
---|
2458 | IF ( scalar_advec == 'ws-scheme' ) THEN |
---|
2459 | DO k = nzb, nzt |
---|
2460 | IF ( BTEST( wall_flags_total_0(k,j,i), 0 ) .AND. ( & |
---|
2461 | ANY( .NOT. BTEST( wall_flags_total_0(k,j-3:j+3,i-1), 0 ) ) .OR.& |
---|
2462 | ANY( .NOT. BTEST( wall_flags_total_0(k,j-3:j+3,i-2), 0 ) ) .OR.& |
---|
2463 | ANY( .NOT. BTEST( wall_flags_total_0(k,j-3:j+3,i-3), 0 ) ) .OR.& |
---|
2464 | ANY( .NOT. BTEST( wall_flags_total_0(k,j-3:j+3,i+1), 0 ) ) .OR.& |
---|
2465 | ANY( .NOT. BTEST( wall_flags_total_0(k,j-3:j+3,i+2), 0 ) ) .OR.& |
---|
2466 | ANY( .NOT. BTEST( wall_flags_total_0(k,j-3:j+3,i+3), 0 ) ) .OR.& |
---|
2467 | ANY( .NOT. BTEST( wall_flags_total_0(k,j-1,i-3:i+3), 0 ) ) .OR.& |
---|
2468 | ANY( .NOT. BTEST( wall_flags_total_0(k,j-2,i-3:i+3), 0 ) ) .OR.& |
---|
2469 | ANY( .NOT. BTEST( wall_flags_total_0(k,j-3,i-3:i+3), 0 ) ) .OR.& |
---|
2470 | ANY( .NOT. BTEST( wall_flags_total_0(k,j+1,i-3:i+3), 0 ) ) .OR.& |
---|
2471 | ANY( .NOT. BTEST( wall_flags_total_0(k,j+2,i-3:i+3), 0 ) ) .OR.& |
---|
2472 | ANY( .NOT. BTEST( wall_flags_total_0(k,j+3,i-3:i+3), 0 ) ) & |
---|
2473 | ) ) & |
---|
2474 | wall_flags_total_0(k,j,i) = IBSET( wall_flags_total_0(k,j,i), 31 ) |
---|
2475 | |
---|
2476 | ENDDO |
---|
2477 | ENDIF |
---|
2478 | ENDDO |
---|
2479 | ENDDO |
---|
2480 | ! |
---|
2481 | !-- Finally, set identification flags indicating natural terrain or buildings. |
---|
2482 | !-- Natural terrain grid points. Information on the type of the surface is |
---|
2483 | !-- stored in bit 1 of 3D Integer array topo. However, this bit is only set |
---|
2484 | !-- when topography is read from file. In order to run the land-surface model |
---|
2485 | !-- also without topography information, set bit 1 explicitely in this case. |
---|
2486 | !-- |
---|
2487 | !-- Natural terrain grid points |
---|
2488 | !-- If no topography is initialized, the land-surface is at k = nzb. |
---|
2489 | IF ( TRIM( topography ) /= 'read_from_file' ) THEN |
---|
2490 | wall_flags_static_0(nzb,:,:) = IBSET( wall_flags_static_0(nzb,:,:), 5 ) |
---|
2491 | ELSE |
---|
2492 | DO i = nxl, nxr |
---|
2493 | DO j = nys, nyn |
---|
2494 | DO k = nzb, nzt+1 |
---|
2495 | ! |
---|
2496 | !-- Natural terrain grid point |
---|
2497 | IF ( BTEST( topo(k,j,i), 1 ) ) & |
---|
2498 | wall_flags_static_0(k,j,i) = IBSET( wall_flags_static_0(k,j,i), 5 ) |
---|
2499 | ENDDO |
---|
2500 | ENDDO |
---|
2501 | ENDDO |
---|
2502 | ENDIF |
---|
2503 | ! |
---|
2504 | !-- Building grid points. |
---|
2505 | DO i = nxl, nxr |
---|
2506 | DO j = nys, nyn |
---|
2507 | DO k = nzb, nzt+1 |
---|
2508 | IF ( BTEST( topo(k,j,i), 2 ) ) & |
---|
2509 | wall_flags_static_0(k,j,i) = IBSET( wall_flags_static_0(k,j,i), 6 ) |
---|
2510 | ENDDO |
---|
2511 | ENDDO |
---|
2512 | ENDDO |
---|
2513 | ! |
---|
2514 | !-- Set flag 4, indicating new topography grid points due to filtering. |
---|
2515 | DO i = nxl, nxr |
---|
2516 | DO j = nys, nyn |
---|
2517 | DO k = nzb, nzt+1 |
---|
2518 | IF ( BTEST( topo(k,j,i), 4 ) ) & |
---|
2519 | wall_flags_static_0(k,j,i) = IBSET( wall_flags_static_0(k,j,i), 4 ) |
---|
2520 | ENDDO |
---|
2521 | ENDDO |
---|
2522 | ENDDO |
---|
2523 | |
---|
2524 | CALL exchange_horiz_int( wall_flags_static_0, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2525 | |
---|
2526 | DO i = nxl, nxr |
---|
2527 | DO j = nys, nyn |
---|
2528 | DO k = nzb, nzt+1 |
---|
2529 | wall_flags_total_0(k,j,i) = IOR( wall_flags_total_0(k,j,i), wall_flags_static_0(k,j,i) ) |
---|
2530 | ENDDO |
---|
2531 | ENDDO |
---|
2532 | ENDDO |
---|
2533 | ! |
---|
2534 | !-- Exchange ghost points for wall flags |
---|
2535 | CALL exchange_horiz_int( wall_flags_total_0, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
2536 | ! |
---|
2537 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
2538 | !-- boundary conditions for topography. |
---|
2539 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
2540 | IF ( nys == 0 ) THEN |
---|
2541 | DO i = 1, nbgp |
---|
2542 | wall_flags_total_0(:,nys-i,:) = wall_flags_total_0(:,nys,:) |
---|
2543 | ENDDO |
---|
2544 | ENDIF |
---|
2545 | IF ( nyn == ny ) THEN |
---|
2546 | DO i = 1, nbgp |
---|
2547 | wall_flags_total_0(:,nyn+i,:) = wall_flags_total_0(:,nyn,:) |
---|
2548 | ENDDO |
---|
2549 | ENDIF |
---|
2550 | ENDIF |
---|
2551 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
2552 | IF ( nxl == 0 ) THEN |
---|
2553 | DO i = 1, nbgp |
---|
2554 | wall_flags_total_0(:,:,nxl-i) = wall_flags_total_0(:,:,nxl) |
---|
2555 | ENDDO |
---|
2556 | ENDIF |
---|
2557 | IF ( nxr == nx ) THEN |
---|
2558 | DO i = 1, nbgp |
---|
2559 | wall_flags_total_0(:,:,nxr+i) = wall_flags_total_0(:,:,nxr) |
---|
2560 | ENDDO |
---|
2561 | ENDIF |
---|
2562 | ENDIF |
---|
2563 | ! |
---|
2564 | !-- Pre-calculate topography top indices (former get_topography_top_index |
---|
2565 | !-- function) |
---|
2566 | ALLOCATE( topo_top_ind(nysg:nyng,nxlg:nxrg,0:4) ) |
---|
2567 | ! |
---|
2568 | !-- Uppermost topography index on scalar grid |
---|
2569 | ibit = 12 |
---|
2570 | topo_top_ind(:,:,0) = MAXLOC( & |
---|
2571 | MERGE( 1, 0, & |
---|
2572 | BTEST( wall_flags_total_0(:,:,:), ibit ) & |
---|
2573 | ), DIM = 1 & |
---|
2574 | ) - 1 |
---|
2575 | ! |
---|
2576 | !-- Uppermost topography index on u grid |
---|
2577 | ibit = 14 |
---|
2578 | topo_top_ind(:,:,1) = MAXLOC( & |
---|
2579 | MERGE( 1, 0, & |
---|
2580 | BTEST( wall_flags_total_0(:,:,:), ibit ) & |
---|
2581 | ), DIM = 1 & |
---|
2582 | ) - 1 |
---|
2583 | ! |
---|
2584 | !-- Uppermost topography index on v grid |
---|
2585 | ibit = 16 |
---|
2586 | topo_top_ind(:,:,2) = MAXLOC( & |
---|
2587 | MERGE( 1, 0, & |
---|
2588 | BTEST( wall_flags_total_0(:,:,:), ibit ) & |
---|
2589 | ), DIM = 1 & |
---|
2590 | ) - 1 |
---|
2591 | ! |
---|
2592 | !-- Uppermost topography index on w grid |
---|
2593 | ibit = 18 |
---|
2594 | topo_top_ind(:,:,3) = MAXLOC( & |
---|
2595 | MERGE( 1, 0, & |
---|
2596 | BTEST( wall_flags_total_0(:,:,:), ibit ) & |
---|
2597 | ), DIM = 1 & |
---|
2598 | ) - 1 |
---|
2599 | ! |
---|
2600 | !-- Uppermost topography index on scalar outer grid |
---|
2601 | ibit = 24 |
---|
2602 | topo_top_ind(:,:,4) = MAXLOC( & |
---|
2603 | MERGE( 1, 0, & |
---|
2604 | BTEST( wall_flags_total_0(:,:,:), ibit ) & |
---|
2605 | ), DIM = 1 & |
---|
2606 | ) - 1 |
---|
2607 | |
---|
2608 | END SUBROUTINE set_topo_flags |
---|