1 | !> @file surface_layer_fluxes_mod.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 1997-2018 Leibniz Universitaet Hannover |
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18 | ! |
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19 | !------------------------------------------------------------------------------! |
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20 | ! |
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21 | ! Current revisions: |
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22 | ! ------------------ |
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23 | ! |
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24 | ! |
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25 | ! Former revisions: |
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26 | ! ----------------- |
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27 | ! $Id: surface_layer_fluxes_mod.f90 3597 2018-12-04 08:40:18Z eckhard $ |
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28 | ! Added routine for calculating near surface air potential temperature (moved |
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29 | ! from urban_surface_mod) |
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30 | ! |
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31 | ! 3547 2018-11-21 13:21:24Z suehring |
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32 | ! variables documented |
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33 | ! |
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34 | ! 3361 2018-10-16 20:39:37Z knoop |
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35 | ! Modularization of all bulk cloud physics code components |
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36 | ! |
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37 | ! 3271 2018-09-24 08:20:34Z suehring |
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38 | ! Comment revised |
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39 | ! |
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40 | ! 3157 2018-07-19 21:08:49Z maronga |
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41 | ! Added local free convection velocity scale w_lfc in calculation of uvw_abs. |
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42 | ! This can be switche on/off by the user via the flag namelist parameter |
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43 | ! use_free_convection_scaling |
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44 | ! |
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45 | ! 3152 2018-07-19 13:26:52Z suehring |
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46 | ! q_surface is now part of surface structure |
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47 | ! |
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48 | ! 3149 2018-07-19 05:48:09Z maronga |
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49 | ! Correct accidental last commit |
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50 | ! |
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51 | ! 3148 2018-07-19 05:45:25Z maronga |
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52 | ! Major bugfix in calculation of Obukhov length |
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53 | ! |
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54 | ! 3146 2018-07-18 22:36:19Z maronga |
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55 | ! move phi_m from turbulence_closure_mod |
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56 | ! |
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57 | ! 3045 2018-05-28 07:55:41Z Giersch |
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58 | ! Error message revised |
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59 | ! |
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60 | ! 2766 2018-01-22 17:17:47Z kanani |
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61 | ! Removed preprocessor directive __chem |
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62 | ! |
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63 | ! 2718 2018-01-02 08:49:38Z maronga |
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64 | ! Corrected "Former revisions" section |
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65 | ! |
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66 | ! 2696 2017-12-14 17:12:51Z kanani |
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67 | ! - Change in file header (GPL part) |
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68 | ! - Implementation of chemistry module (FK) |
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69 | ! - Added calculation of pt1 and qv1 for all surface types. Added calculation of |
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70 | ! pt_surface for default-type surfaces (BM) |
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71 | ! - Add flag to disable computation of qsws in case of urban surface (MS) |
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72 | ! |
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73 | ! 2547 2017-10-16 12:41:56Z schwenkel |
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74 | ! extended by cloud_droplets option |
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75 | ! |
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76 | ! 2321 2017-07-24 15:57:07Z schwenkel |
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77 | ! Bugfix: Correct index in lookup table for Obukhov length |
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78 | ! |
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79 | ! 2299 2017-06-29 10:14:38Z suehring |
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80 | ! Adjusted for allow separate spinups of LSM and atmosphere code |
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81 | ! |
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82 | ! 2292 2017-06-20 09:51:42Z schwenkel |
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83 | ! Implementation of new microphysic scheme: cloud_scheme = 'morrison' |
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84 | ! includes two more prognostic equations for cloud drop concentration (nc) |
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85 | ! and cloud water content (qc). |
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86 | ! |
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87 | ! 2281 2017-06-13 11:34:50Z suehring |
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88 | ! Clean-up unnecessary index access to surface type |
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89 | ! |
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90 | ! 2233 2017-05-30 18:08:54Z suehring |
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91 | ! |
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92 | ! 2232 2017-05-30 17:47:52Z suehring |
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93 | ! Adjustments to new surface concept |
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94 | ! OpenMP bugfix |
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95 | ! |
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96 | ! 2118 2017-01-17 16:38:49Z raasch |
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97 | ! OpenACC directives and related code removed |
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98 | ! |
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99 | ! 2091 2016-12-21 16:38:18Z suehring |
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100 | ! Bugfix in calculation of vsws ( incorrect linear interpolation of us ) |
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101 | ! |
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102 | ! 2076 2016-12-02 13:54:20Z raasch |
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103 | ! further openmp bugfix for lookup method |
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104 | ! |
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105 | ! 2073 2016-11-30 14:34:05Z raasch |
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106 | ! openmp bugfix for lookup method |
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107 | ! |
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108 | ! 2037 2016-10-26 11:15:40Z knoop |
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109 | ! Anelastic approximation implemented |
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110 | ! |
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111 | ! 2011 2016-09-19 17:29:57Z kanani |
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112 | ! Flag urban_surface is now defined in module control_parameters. |
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113 | ! |
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114 | ! 2007 2016-08-24 15:47:17Z kanani |
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115 | ! Account for urban surface model in computation of vertical kinematic heatflux |
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116 | ! |
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117 | ! 2000 2016-08-20 18:09:15Z knoop |
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118 | ! Forced header and separation lines into 80 columns |
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119 | ! |
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120 | ! 1992 2016-08-12 15:14:59Z suehring |
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121 | ! Minor bug, declaration of look-up index as INTEGER |
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122 | ! |
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123 | ! 1960 2016-07-12 16:34:24Z suehring |
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124 | ! Treat humidity and passive scalar separately |
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125 | ! |
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126 | ! 1929 2016-06-09 16:25:25Z suehring |
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127 | ! Bugfix: avoid segmentation fault in case one grid point is horizontally |
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128 | ! completely surrounded by topography |
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129 | ! |
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130 | ! 1920 2016-05-30 10:50:15Z suehring |
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131 | ! Avoid segmentation fault (see change in 1915) by different initialization of |
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132 | ! us instead of adding a very small number in the denominator |
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133 | ! |
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134 | ! 1915 2016-05-27 11:05:02Z suehring |
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135 | ! Bugfix: avoid segmentation fault in case of most_method = 'circular' at first |
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136 | ! timestep |
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137 | ! |
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138 | ! 1850 2016-04-08 13:29:27Z maronga |
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139 | ! Module renamed |
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140 | ! |
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141 | ! |
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142 | ! 1822 2016-04-07 07:49:42Z hoffmann |
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143 | ! icloud_scheme replaced by microphysics_* |
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144 | ! |
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145 | ! 1788 2016-03-10 11:01:04Z maronga |
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146 | ! Added parameter z0q which replaces z0h in the similarity functions for |
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147 | ! humidity. |
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148 | ! Syntax layout improved. |
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149 | ! |
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150 | ! 1757 2016-02-22 15:49:32Z maronga |
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151 | ! Minor fixes. |
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152 | ! |
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153 | ! 1749 2016-02-09 12:19:56Z raasch |
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154 | ! further OpenACC adjustments |
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155 | ! |
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156 | ! 1747 2016-02-08 12:25:53Z raasch |
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157 | ! adjustments for OpenACC usage |
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158 | ! |
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159 | ! 1709 2015-11-04 14:47:01Z maronga |
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160 | ! Bugfix: division by zero could occur when calculating rib at low wind speeds |
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161 | ! Bugfix: calculation of uv_total for neutral = .T., initial value for ol for |
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162 | ! neutral = .T. |
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163 | ! |
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164 | ! 1705 2015-11-02 14:28:56Z maronga |
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165 | ! Typo removed |
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166 | ! |
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167 | ! 1697 2015-10-28 17:14:10Z raasch |
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168 | ! FORTRAN and OpenMP errors removed |
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169 | ! |
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170 | ! 1696 2015-10-27 10:03:34Z maronga |
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171 | ! Modularized and completely re-written version of prandtl_fluxes.f90. In the |
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172 | ! course of the re-writing two additional methods have been implemented. See |
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173 | ! updated description. |
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174 | ! |
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175 | ! 1551 2015-03-03 14:18:16Z maronga |
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176 | ! Removed land surface model part. The surface fluxes are now always calculated |
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177 | ! within prandtl_fluxes, based on the given surface temperature/humidity (which |
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178 | ! is either provided by the land surface model, by large scale forcing data, or |
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179 | ! directly prescribed by the user. |
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180 | ! |
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181 | ! 1496 2014-12-02 17:25:50Z maronga |
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182 | ! Adapted for land surface model |
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183 | ! |
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184 | ! 1494 2014-11-21 17:14:03Z maronga |
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185 | ! Bugfixes: qs is now calculated before calculation of Rif. calculation of |
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186 | ! buoyancy flux in Rif corrected (added missing humidity term), allow use of |
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187 | ! topography for coupled runs (not tested) |
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188 | ! |
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189 | ! 1361 2014-04-16 15:17:48Z hoffmann |
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190 | ! Bugfix: calculation of turbulent fluxes of rain water content (qrsws) and rain |
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191 | ! drop concentration (nrsws) added |
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192 | ! |
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193 | ! 1340 2014-03-25 19:45:13Z kanani |
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194 | ! REAL constants defined as wp-kind |
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195 | ! |
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196 | ! 1320 2014-03-20 08:40:49Z raasch |
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197 | ! ONLY-attribute added to USE-statements, |
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198 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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199 | ! kinds are defined in new module kinds, |
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200 | ! old module precision_kind is removed, |
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201 | ! revision history before 2012 removed, |
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202 | ! comment fields (!:) to be used for variable explanations added to |
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203 | ! all variable declaration statements |
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204 | ! |
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205 | ! 1276 2014-01-15 13:40:41Z heinze |
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206 | ! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars |
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207 | ! |
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208 | ! 1257 2013-11-08 15:18:40Z raasch |
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209 | ! openACC "kernels do" replaced by "kernels loop", "loop independent" added |
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210 | ! |
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211 | ! 1036 2012-10-22 13:43:42Z raasch |
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212 | ! code put under GPL (PALM 3.9) |
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213 | ! |
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214 | ! 1015 2012-09-27 09:23:24Z raasch |
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215 | ! OpenACC statements added |
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216 | ! |
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217 | ! 978 2012-08-09 08:28:32Z fricke |
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218 | ! roughness length for scalar quantities z0h added |
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219 | ! |
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220 | ! Revision 1.1 1998/01/23 10:06:06 raasch |
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221 | ! Initial revision |
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222 | ! |
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223 | ! |
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224 | ! Description: |
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225 | ! ------------ |
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226 | !> Diagnostic computation of vertical fluxes in the constant flux layer from the |
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227 | !> values of the variables at grid point k=1. Three different methods are |
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228 | !> available: |
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229 | !> 1) the "old" version (most_method = 'circular') which is fast, but inaccurate |
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230 | !> 2) a Newton iteration method (most_method = 'newton'), which is accurate, but |
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231 | !> slower |
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232 | !> 3) a method using a lookup table which is fast and accurate. Note, however, |
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233 | !> that this method cannot be used in case of roughness heterogeneity |
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234 | !> |
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235 | !> @todo (re)move large_scale_forcing actions |
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236 | !> @todo check/optimize OpenMP directives |
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237 | !> @todo simplify if conditions (which flux need to be computed in which case) |
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238 | !------------------------------------------------------------------------------! |
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239 | MODULE surface_layer_fluxes_mod |
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240 | |
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241 | USE arrays_3d, & |
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242 | ONLY: e, kh, nc, nr, pt, q, ql, qc, qr, s, u, v, vpt, w, zu, zw, & |
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243 | drho_air_zw, rho_air_zw, d_exner |
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244 | |
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245 | USE basic_constants_and_equations_mod, & |
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246 | ONLY: g, kappa, lv_d_cp, pi, rd_d_rv |
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247 | |
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248 | USE chem_modules, & |
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249 | ONLY: constant_csflux, nvar |
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250 | |
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251 | USE cpulog |
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252 | |
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253 | USE control_parameters, & |
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254 | ONLY: air_chemistry, cloud_droplets, & |
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255 | constant_heatflux, constant_scalarflux, & |
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256 | constant_waterflux, coupling_mode, do_output_at_2m, humidity, & |
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257 | ibc_e_b, ibc_pt_b, indoor_model, initializing_actions, & |
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258 | intermediate_timestep_count, intermediate_timestep_count_max, & |
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259 | land_surface, large_scale_forcing, lsf_surf, message_string, & |
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260 | most_method, neutral, passive_scalar, pt_surface, q_surface, & |
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261 | run_coupled, surface_pressure, simulated_time, terminate_run, & |
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262 | time_since_reference_point, urban_surface, & |
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263 | use_free_convection_scaling, zeta_max, zeta_min |
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264 | |
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265 | USE grid_variables, & |
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266 | ONLY: dx, dy |
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267 | |
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268 | USE indices, & |
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269 | ONLY: nxl, nxr, nys, nyn, nzb |
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270 | |
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271 | USE kinds |
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272 | |
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273 | USE bulk_cloud_model_mod, & |
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274 | ONLY: bulk_cloud_model, microphysics_morrison, microphysics_seifert |
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275 | |
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276 | USE pegrid |
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277 | |
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278 | USE land_surface_model_mod, & |
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279 | ONLY: aero_resist_kray, skip_time_do_lsm |
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280 | |
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281 | USE surface_mod, & |
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282 | ONLY : surf_def_h, surf_def_v, surf_lsm_h, surf_lsm_v, surf_type, & |
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283 | surf_usm_h, surf_usm_v |
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284 | |
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285 | |
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286 | IMPLICIT NONE |
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287 | |
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288 | INTEGER(iwp) :: i !< loop index x direction |
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289 | INTEGER(iwp) :: j !< loop index y direction |
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290 | INTEGER(iwp) :: k !< loop index z direction |
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291 | INTEGER(iwp) :: l !< loop index for surf type |
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292 | INTEGER(iwp) :: li_bnd = 7500 !< Lookup table index of the last time step |
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293 | |
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294 | INTEGER(iwp), PARAMETER :: num_steps = 15000 !< number of steps in the lookup table |
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295 | |
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296 | LOGICAL :: coupled_run !< Flag for coupled atmosphere-ocean runs |
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297 | LOGICAL :: downward = .FALSE.!< Flag indicating downward-facing horizontal surface |
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298 | LOGICAL :: mom_uv = .FALSE. !< Flag indicating calculation of usvs and vsus at vertical surfaces |
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299 | LOGICAL :: mom_w = .FALSE. !< Flag indicating calculation of wsus and wsvs at vertical surfaces |
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300 | LOGICAL :: mom_tke = .FALSE. !< Flag indicating calculation of momentum fluxes at vertical surfaces used for TKE production |
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301 | LOGICAL :: surf_vertical !< Flag indicating vertical surfaces |
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302 | |
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303 | REAL(wp), DIMENSION(0:num_steps-1) :: rib_tab, & !< Lookup table bulk Richardson number |
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304 | ol_tab !< Lookup table values of L |
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305 | |
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306 | REAL(wp) :: e_s, & !< Saturation water vapor pressure |
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307 | ol_max = 1.0E6_wp, & !< Maximum Obukhov length |
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308 | rib_max, & !< Maximum Richardson number in lookup table |
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309 | rib_min, & !< Minimum Richardson number in lookup table |
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310 | z_mo !< Height of the constant flux layer where MOST is assumed |
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311 | |
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312 | TYPE(surf_type), POINTER :: surf !< surf-type array, used to generalize subroutines |
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313 | |
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314 | |
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315 | SAVE |
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316 | |
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317 | PRIVATE |
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318 | |
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319 | PUBLIC init_surface_layer_fluxes, phi_m, surface_layer_fluxes |
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320 | |
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321 | INTERFACE init_surface_layer_fluxes |
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322 | MODULE PROCEDURE init_surface_layer_fluxes |
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323 | END INTERFACE init_surface_layer_fluxes |
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324 | |
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325 | INTERFACE phi_m |
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326 | MODULE PROCEDURE phi_m |
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327 | END INTERFACE phi_m |
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328 | |
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329 | INTERFACE surface_layer_fluxes |
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330 | MODULE PROCEDURE surface_layer_fluxes |
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331 | END INTERFACE surface_layer_fluxes |
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332 | |
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333 | |
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334 | CONTAINS |
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335 | |
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336 | |
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337 | !------------------------------------------------------------------------------! |
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338 | ! Description: |
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339 | ! ------------ |
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340 | !> Main routine to compute the surface fluxes |
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341 | !------------------------------------------------------------------------------! |
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342 | SUBROUTINE surface_layer_fluxes |
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343 | |
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344 | IMPLICIT NONE |
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345 | |
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346 | surf_vertical = .FALSE. !< flag indicating vertically orientated surface elements |
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347 | downward = .FALSE. !< flag indicating downward-facing surface elements |
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348 | ! |
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349 | !-- Derive potential temperature and specific humidity at first grid level |
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350 | !-- from the fields pt and q |
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351 | ! |
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352 | !-- First call for horizontal default-type surfaces (l=0 - upward facing, |
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353 | !-- l=1 - downward facing) |
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354 | DO l = 0, 1 |
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355 | IF ( surf_def_h(l)%ns >= 1 ) THEN |
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356 | surf => surf_def_h(l) |
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357 | CALL calc_pt_q |
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358 | IF ( .NOT. neutral ) THEN |
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359 | CALL calc_pt_surface |
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360 | IF ( humidity ) THEN |
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361 | CALL calc_q_surface |
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362 | CALL calc_vpt_surface |
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363 | ENDIF |
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364 | ENDIF |
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365 | ENDIF |
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366 | ENDDO |
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367 | ! |
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368 | !-- Call for natural-type horizontal surfaces |
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369 | IF ( surf_lsm_h%ns >= 1 ) THEN |
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370 | surf => surf_lsm_h |
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371 | CALL calc_pt_q |
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372 | ENDIF |
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373 | |
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374 | ! |
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375 | !-- Call for urban-type horizontal surfaces |
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376 | IF ( surf_usm_h%ns >= 1 ) THEN |
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377 | surf => surf_usm_h |
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378 | CALL calc_pt_q |
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379 | ENDIF |
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380 | |
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381 | ! |
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382 | !-- Call for natural-type vertical surfaces |
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383 | DO l = 0, 3 |
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384 | IF ( surf_lsm_v(l)%ns >= 1 ) THEN |
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385 | surf => surf_lsm_v(l) |
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386 | CALL calc_pt_q |
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387 | ENDIF |
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388 | |
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389 | !-- Call for urban-type vertical surfaces |
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390 | IF ( surf_usm_v(l)%ns >= 1 ) THEN |
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391 | surf => surf_usm_v(l) |
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392 | CALL calc_pt_q |
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393 | ENDIF |
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394 | ENDDO |
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395 | |
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396 | ! |
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397 | !-- First, calculate the new Obukhov length, then new friction velocity, |
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398 | !-- followed by the new scaling parameters (th*, q*, etc.), and the new |
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399 | !-- surface fluxes if required. The old routine ("circular") requires a |
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400 | !-- different order of calls as the scaling parameters from the previous time |
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401 | !-- steps are used to calculate the Obukhov length |
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402 | |
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403 | ! |
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404 | !-- Depending on setting of most_method use the "old" routine |
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405 | !-- Note, each routine is called for different surface types. |
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406 | !-- First call for default-type horizontal surfaces, for natural- and |
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407 | !-- urban-type surfaces. Note, at this place only upward-facing horizontal |
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408 | !-- surfaces are treted. |
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409 | IF ( most_method == 'circular' ) THEN |
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410 | ! |
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411 | !-- Default-type upward-facing horizontal surfaces |
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412 | IF ( surf_def_h(0)%ns >= 1 ) THEN |
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413 | surf => surf_def_h(0) |
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414 | CALL calc_scaling_parameters |
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415 | CALL calc_uvw_abs |
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416 | IF ( .NOT. neutral ) CALL calc_ol |
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417 | CALL calc_us |
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418 | CALL calc_surface_fluxes |
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419 | |
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420 | IF ( do_output_at_2m ) THEN |
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421 | CALL calc_pt_near_surface ( '2m' ) |
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422 | ENDIF |
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423 | ENDIF |
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424 | ! |
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425 | !-- Natural-type horizontal surfaces |
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426 | IF ( surf_lsm_h%ns >= 1 ) THEN |
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427 | surf => surf_lsm_h |
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428 | CALL calc_scaling_parameters |
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429 | CALL calc_uvw_abs |
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430 | IF ( .NOT. neutral ) CALL calc_ol |
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431 | CALL calc_us |
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432 | CALL calc_surface_fluxes |
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433 | IF ( do_output_at_2m ) THEN |
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434 | CALL calc_pt_near_surface ( '2m' ) |
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435 | ENDIF |
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436 | ENDIF |
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437 | ! |
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438 | !-- Urban-type horizontal surfaces |
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439 | IF ( surf_usm_h%ns >= 1 ) THEN |
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440 | surf => surf_usm_h |
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441 | CALL calc_scaling_parameters |
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442 | CALL calc_uvw_abs |
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443 | IF ( .NOT. neutral ) CALL calc_ol |
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444 | CALL calc_us |
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445 | CALL calc_surface_fluxes |
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446 | IF ( do_output_at_2m ) THEN |
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447 | CALL calc_pt_near_surface ( '2m' ) |
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448 | ENDIF |
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449 | IF ( indoor_model ) THEN |
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450 | CALL calc_pt_near_surface ( '10cm' ) |
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451 | ENDIF |
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452 | ENDIF |
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453 | ! |
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454 | !-- Use either Newton iteration or a lookup table for the bulk Richardson |
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455 | !-- number to calculate the Obukhov length |
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456 | ELSEIF ( most_method == 'newton' .OR. most_method == 'lookup' ) THEN |
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457 | ! |
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458 | !-- Default-type upward-facing horizontal surfaces |
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459 | IF ( surf_def_h(0)%ns >= 1 ) THEN |
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460 | surf => surf_def_h(0) |
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461 | CALL calc_uvw_abs |
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462 | IF ( .NOT. neutral ) CALL calc_ol |
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463 | CALL calc_us |
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464 | CALL calc_scaling_parameters |
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465 | CALL calc_surface_fluxes |
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466 | IF ( do_output_at_2m ) THEN |
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467 | CALL calc_pt_near_surface ( '2m' ) |
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468 | ENDIF |
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469 | ENDIF |
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470 | ! |
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471 | !-- Natural-type horizontal surfaces |
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472 | IF ( surf_lsm_h%ns >= 1 ) THEN |
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473 | surf => surf_lsm_h |
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474 | CALL calc_uvw_abs |
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475 | IF ( .NOT. neutral ) CALL calc_ol |
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476 | CALL calc_us |
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477 | CALL calc_scaling_parameters |
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478 | CALL calc_surface_fluxes |
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479 | IF ( do_output_at_2m ) THEN |
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480 | CALL calc_pt_near_surface ( '2m' ) |
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481 | ENDIF |
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482 | ENDIF |
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483 | ! |
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484 | !-- Urban-type horizontal surfaces |
---|
485 | IF ( surf_usm_h%ns >= 1 ) THEN |
---|
486 | surf => surf_usm_h |
---|
487 | CALL calc_uvw_abs |
---|
488 | IF ( .NOT. neutral ) CALL calc_ol |
---|
489 | CALL calc_us |
---|
490 | CALL calc_scaling_parameters |
---|
491 | CALL calc_surface_fluxes |
---|
492 | IF ( do_output_at_2m ) THEN |
---|
493 | CALL calc_pt_near_surface ( '2m' ) |
---|
494 | ENDIF |
---|
495 | IF ( indoor_model ) THEN |
---|
496 | CALL calc_pt_near_surface ( '10cm' ) |
---|
497 | ENDIF |
---|
498 | ENDIF |
---|
499 | |
---|
500 | ENDIF |
---|
501 | ! |
---|
502 | !-- Treat downward-facing horizontal surfaces. Note, so far, these are |
---|
503 | !-- always default type. Stratification is not considered |
---|
504 | !-- in this case, hence, no further distinction between different |
---|
505 | !-- most_method is required. |
---|
506 | IF ( surf_def_h(1)%ns >= 1 ) THEN |
---|
507 | downward = .TRUE. |
---|
508 | surf => surf_def_h(1) |
---|
509 | CALL calc_uvw_abs |
---|
510 | CALL calc_us |
---|
511 | CALL calc_surface_fluxes |
---|
512 | downward = .FALSE. |
---|
513 | ENDIF |
---|
514 | ! |
---|
515 | !-- Calculate surfaces fluxes at vertical surfaces for momentum |
---|
516 | !-- and subgrid-scale TKE. |
---|
517 | !-- No stability is considered. Therefore, scaling parameters and Obukhov- |
---|
518 | !-- length do not need to be calculated and no distinction in 'circular', |
---|
519 | !-- 'Newton' or 'lookup' is necessary so far. |
---|
520 | !-- Note, this will change if stability is once considered. |
---|
521 | surf_vertical = .TRUE. |
---|
522 | ! |
---|
523 | !-- Calculate horizontal momentum fluxes at north- and south-facing |
---|
524 | !-- surfaces(usvs). |
---|
525 | !-- For default-type surfaces |
---|
526 | mom_uv = .TRUE. |
---|
527 | DO l = 0, 1 |
---|
528 | IF ( surf_def_v(l)%ns >= 1 ) THEN |
---|
529 | surf => surf_def_v(l) |
---|
530 | ! |
---|
531 | !-- Compute surface-parallel velocity |
---|
532 | CALL calc_uvw_abs_v_ugrid |
---|
533 | ! |
---|
534 | !-- Compute respective friction velocity on staggered grid |
---|
535 | CALL calc_us |
---|
536 | ! |
---|
537 | !-- Compute respective surface fluxes for momentum and TKE |
---|
538 | CALL calc_surface_fluxes |
---|
539 | ENDIF |
---|
540 | ENDDO |
---|
541 | ! |
---|
542 | !-- For natural-type surfaces. Please note, even though stability is not |
---|
543 | !-- considered for the calculation of momentum fluxes at vertical surfaces, |
---|
544 | !-- scaling parameters and Obukov length are calculated nevertheless in this |
---|
545 | !-- case. This is due to the requirement of ts in parameterization of heat |
---|
546 | !-- flux in land-surface model in case of aero_resist_kray is not true. |
---|
547 | IF ( .NOT. aero_resist_kray ) THEN |
---|
548 | IF ( most_method == 'circular' ) THEN |
---|
549 | DO l = 0, 1 |
---|
550 | IF ( surf_lsm_v(l)%ns >= 1 ) THEN |
---|
551 | surf => surf_lsm_v(l) |
---|
552 | ! |
---|
553 | !-- Compute scaling parameters |
---|
554 | CALL calc_scaling_parameters |
---|
555 | ! |
---|
556 | !-- Compute surface-parallel velocity |
---|
557 | CALL calc_uvw_abs_v_ugrid |
---|
558 | ! |
---|
559 | !-- Compute Obukhov length |
---|
560 | IF ( .NOT. neutral ) CALL calc_ol |
---|
561 | ! |
---|
562 | !-- Compute respective friction velocity on staggered grid |
---|
563 | CALL calc_us |
---|
564 | ! |
---|
565 | !-- Compute respective surface fluxes for momentum and TKE |
---|
566 | CALL calc_surface_fluxes |
---|
567 | ENDIF |
---|
568 | ENDDO |
---|
569 | ELSE |
---|
570 | DO l = 0, 1 |
---|
571 | IF ( surf_lsm_v(l)%ns >= 1 ) THEN |
---|
572 | surf => surf_lsm_v(l) |
---|
573 | ! |
---|
574 | !-- Compute surface-parallel velocity |
---|
575 | CALL calc_uvw_abs_v_ugrid |
---|
576 | ! |
---|
577 | !-- Compute Obukhov length |
---|
578 | IF ( .NOT. neutral ) CALL calc_ol |
---|
579 | ! |
---|
580 | !-- Compute respective friction velocity on staggered grid |
---|
581 | CALL calc_us |
---|
582 | ! |
---|
583 | !-- Compute scaling parameters |
---|
584 | CALL calc_scaling_parameters |
---|
585 | ! |
---|
586 | !-- Compute respective surface fluxes for momentum and TKE |
---|
587 | CALL calc_surface_fluxes |
---|
588 | ENDIF |
---|
589 | ENDDO |
---|
590 | ENDIF |
---|
591 | ! |
---|
592 | !-- No ts is required, so scaling parameters and Obukhov length do not need |
---|
593 | !-- to be computed. |
---|
594 | ELSE |
---|
595 | DO l = 0, 1 |
---|
596 | IF ( surf_lsm_v(l)%ns >= 1 ) THEN |
---|
597 | surf => surf_lsm_v(l) |
---|
598 | ! |
---|
599 | !-- Compute surface-parallel velocity |
---|
600 | CALL calc_uvw_abs_v_ugrid |
---|
601 | ! |
---|
602 | !-- Compute respective friction velocity on staggered grid |
---|
603 | CALL calc_us |
---|
604 | ! |
---|
605 | !-- Compute respective surface fluxes for momentum and TKE |
---|
606 | CALL calc_surface_fluxes |
---|
607 | ENDIF |
---|
608 | ENDDO |
---|
609 | ENDIF |
---|
610 | ! |
---|
611 | !-- For urban-type surfaces |
---|
612 | DO l = 0, 1 |
---|
613 | IF ( surf_usm_v(l)%ns >= 1 ) THEN |
---|
614 | surf => surf_usm_v(l) |
---|
615 | ! |
---|
616 | !-- Compute surface-parallel velocity |
---|
617 | CALL calc_uvw_abs_v_ugrid |
---|
618 | ! |
---|
619 | !-- Compute respective friction velocity on staggered grid |
---|
620 | CALL calc_us |
---|
621 | ! |
---|
622 | !-- Compute respective surface fluxes for momentum and TKE |
---|
623 | CALL calc_surface_fluxes |
---|
624 | ENDIF |
---|
625 | ENDDO |
---|
626 | ! |
---|
627 | !-- Calculate horizontal momentum fluxes at east- and west-facing |
---|
628 | !-- surfaces (vsus). |
---|
629 | !-- For default-type surfaces |
---|
630 | DO l = 2, 3 |
---|
631 | IF ( surf_def_v(l)%ns >= 1 ) THEN |
---|
632 | surf => surf_def_v(l) |
---|
633 | ! |
---|
634 | !-- Compute surface-parallel velocity |
---|
635 | CALL calc_uvw_abs_v_vgrid |
---|
636 | ! |
---|
637 | !-- Compute respective friction velocity on staggered grid |
---|
638 | CALL calc_us |
---|
639 | ! |
---|
640 | !-- Compute respective surface fluxes for momentum and TKE |
---|
641 | CALL calc_surface_fluxes |
---|
642 | ENDIF |
---|
643 | ENDDO |
---|
644 | ! |
---|
645 | !-- For natural-type surfaces. Please note, even though stability is not |
---|
646 | !-- considered for the calculation of momentum fluxes at vertical surfaces, |
---|
647 | !-- scaling parameters and Obukov length are calculated nevertheless in this |
---|
648 | !-- case. This is due to the requirement of ts in parameterization of heat |
---|
649 | !-- flux in land-surface model in case of aero_resist_kray is not true. |
---|
650 | IF ( .NOT. aero_resist_kray ) THEN |
---|
651 | IF ( most_method == 'circular' ) THEN |
---|
652 | DO l = 2, 3 |
---|
653 | IF ( surf_lsm_v(l)%ns >= 1 ) THEN |
---|
654 | surf => surf_lsm_v(l) |
---|
655 | ! |
---|
656 | !-- Compute scaling parameters |
---|
657 | CALL calc_scaling_parameters |
---|
658 | ! |
---|
659 | !-- Compute surface-parallel velocity |
---|
660 | CALL calc_uvw_abs_v_vgrid |
---|
661 | ! |
---|
662 | !-- Compute Obukhov length |
---|
663 | IF ( .NOT. neutral ) CALL calc_ol |
---|
664 | ! |
---|
665 | !-- Compute respective friction velocity on staggered grid |
---|
666 | CALL calc_us |
---|
667 | ! |
---|
668 | !-- Compute respective surface fluxes for momentum and TKE |
---|
669 | CALL calc_surface_fluxes |
---|
670 | ENDIF |
---|
671 | ENDDO |
---|
672 | ELSE |
---|
673 | DO l = 2, 3 |
---|
674 | IF ( surf_lsm_v(l)%ns >= 1 ) THEN |
---|
675 | surf => surf_lsm_v(l) |
---|
676 | ! |
---|
677 | !-- Compute surface-parallel velocity |
---|
678 | CALL calc_uvw_abs_v_vgrid |
---|
679 | ! |
---|
680 | !-- Compute Obukhov length |
---|
681 | IF ( .NOT. neutral ) CALL calc_ol |
---|
682 | ! |
---|
683 | !-- Compute respective friction velocity on staggered grid |
---|
684 | CALL calc_us |
---|
685 | ! |
---|
686 | !-- Compute scaling parameters |
---|
687 | CALL calc_scaling_parameters |
---|
688 | ! |
---|
689 | !-- Compute respective surface fluxes for momentum and TKE |
---|
690 | CALL calc_surface_fluxes |
---|
691 | ENDIF |
---|
692 | ENDDO |
---|
693 | ENDIF |
---|
694 | ELSE |
---|
695 | DO l = 2, 3 |
---|
696 | IF ( surf_lsm_v(l)%ns >= 1 ) THEN |
---|
697 | surf => surf_lsm_v(l) |
---|
698 | ! |
---|
699 | !-- Compute surface-parallel velocity |
---|
700 | CALL calc_uvw_abs_v_vgrid |
---|
701 | ! |
---|
702 | !-- Compute respective friction velocity on staggered grid |
---|
703 | CALL calc_us |
---|
704 | ! |
---|
705 | !-- Compute respective surface fluxes for momentum and TKE |
---|
706 | CALL calc_surface_fluxes |
---|
707 | ENDIF |
---|
708 | ENDDO |
---|
709 | ENDIF |
---|
710 | ! |
---|
711 | !-- For urban-type surfaces |
---|
712 | DO l = 2, 3 |
---|
713 | IF ( surf_usm_v(l)%ns >= 1 ) THEN |
---|
714 | surf => surf_usm_v(l) |
---|
715 | ! |
---|
716 | !-- Compute surface-parallel velocity |
---|
717 | CALL calc_uvw_abs_v_vgrid |
---|
718 | ! |
---|
719 | !-- Compute respective friction velocity on staggered grid |
---|
720 | CALL calc_us |
---|
721 | ! |
---|
722 | !-- Compute respective surface fluxes for momentum and TKE |
---|
723 | CALL calc_surface_fluxes |
---|
724 | ENDIF |
---|
725 | ENDDO |
---|
726 | mom_uv = .FALSE. |
---|
727 | ! |
---|
728 | !-- Calculate horizontal momentum fluxes of w (wsus and wsvs) at vertial |
---|
729 | !-- surfaces. |
---|
730 | mom_w = .TRUE. |
---|
731 | ! |
---|
732 | !-- Default-type surfaces |
---|
733 | DO l = 0, 3 |
---|
734 | IF ( surf_def_v(l)%ns >= 1 ) THEN |
---|
735 | surf => surf_def_v(l) |
---|
736 | CALL calc_uvw_abs_v_wgrid |
---|
737 | CALL calc_us |
---|
738 | CALL calc_surface_fluxes |
---|
739 | ENDIF |
---|
740 | ENDDO |
---|
741 | ! |
---|
742 | !-- Natural-type surfaces |
---|
743 | DO l = 0, 3 |
---|
744 | IF ( surf_lsm_v(l)%ns >= 1 ) THEN |
---|
745 | surf => surf_lsm_v(l) |
---|
746 | CALL calc_uvw_abs_v_wgrid |
---|
747 | CALL calc_us |
---|
748 | CALL calc_surface_fluxes |
---|
749 | ENDIF |
---|
750 | ENDDO |
---|
751 | ! |
---|
752 | !-- Urban-type surfaces |
---|
753 | DO l = 0, 3 |
---|
754 | IF ( surf_usm_v(l)%ns >= 1 ) THEN |
---|
755 | surf => surf_usm_v(l) |
---|
756 | CALL calc_uvw_abs_v_wgrid |
---|
757 | CALL calc_us |
---|
758 | CALL calc_surface_fluxes |
---|
759 | ENDIF |
---|
760 | ENDDO |
---|
761 | mom_w = .FALSE. |
---|
762 | ! |
---|
763 | !-- Calculate momentum fluxes usvs, vsus, wsus and wsvs at vertical |
---|
764 | !-- surfaces for TKE production. Note, here, momentum fluxes are defined |
---|
765 | !-- at grid center and are not staggered as before. |
---|
766 | mom_tke = .TRUE. |
---|
767 | ! |
---|
768 | !-- Default-type surfaces |
---|
769 | DO l = 0, 3 |
---|
770 | IF ( surf_def_v(l)%ns >= 1 ) THEN |
---|
771 | surf => surf_def_v(l) |
---|
772 | CALL calc_uvw_abs_v_sgrid |
---|
773 | CALL calc_us |
---|
774 | CALL calc_surface_fluxes |
---|
775 | ENDIF |
---|
776 | ENDDO |
---|
777 | ! |
---|
778 | !-- Natural-type surfaces |
---|
779 | DO l = 0, 3 |
---|
780 | IF ( surf_lsm_v(l)%ns >= 1 ) THEN |
---|
781 | surf => surf_lsm_v(l) |
---|
782 | CALL calc_uvw_abs_v_sgrid |
---|
783 | CALL calc_us |
---|
784 | CALL calc_surface_fluxes |
---|
785 | ENDIF |
---|
786 | ENDDO |
---|
787 | ! |
---|
788 | !-- Urban-type surfaces |
---|
789 | DO l = 0, 3 |
---|
790 | IF ( surf_usm_v(l)%ns >= 1 ) THEN |
---|
791 | surf => surf_usm_v(l) |
---|
792 | CALL calc_uvw_abs_v_sgrid |
---|
793 | CALL calc_us |
---|
794 | CALL calc_surface_fluxes |
---|
795 | ENDIF |
---|
796 | ENDDO |
---|
797 | mom_tke = .FALSE. |
---|
798 | |
---|
799 | |
---|
800 | END SUBROUTINE surface_layer_fluxes |
---|
801 | |
---|
802 | |
---|
803 | !------------------------------------------------------------------------------! |
---|
804 | ! Description: |
---|
805 | ! ------------ |
---|
806 | !> Initializing actions for the surface layer routine. Basically, this involves |
---|
807 | !> the preparation of a lookup table for the the bulk Richardson number vs |
---|
808 | !> Obukhov length L when using the lookup table method. |
---|
809 | !------------------------------------------------------------------------------! |
---|
810 | SUBROUTINE init_surface_layer_fluxes |
---|
811 | |
---|
812 | IMPLICIT NONE |
---|
813 | |
---|
814 | INTEGER(iwp) :: li, & !< Index for loop to create lookup table |
---|
815 | num_steps_n !< Number of non-stretched zeta steps |
---|
816 | |
---|
817 | LOGICAL :: terminate_run_l = .FALSE. !< Flag to terminate run (global) |
---|
818 | |
---|
819 | REAL(wp), PARAMETER :: zeta_stretch = -10.0_wp !< Start of stretching in the free convection limit |
---|
820 | |
---|
821 | REAL(wp), DIMENSION(:), ALLOCATABLE :: zeta_tmp |
---|
822 | |
---|
823 | |
---|
824 | REAL(wp) :: zeta_step, & !< Increment of zeta |
---|
825 | regr = 1.01_wp, & !< Stretching factor of zeta_step in the free convection limit |
---|
826 | regr_old = 1.0E9_wp, & !< Stretching factor of last iteration step |
---|
827 | z0h_min = 0.0_wp, & !< Minimum value of z0h to create table |
---|
828 | z0_min = 0.0_wp !< Minimum value of z0 to create table |
---|
829 | |
---|
830 | |
---|
831 | |
---|
832 | |
---|
833 | ! |
---|
834 | !-- In case of runs with neutral statification, set Obukhov length to a |
---|
835 | !-- large value |
---|
836 | IF ( neutral ) THEN |
---|
837 | IF ( surf_def_h(0)%ns >= 1 ) surf_def_h(0)%ol = 1.0E10_wp |
---|
838 | IF ( surf_lsm_h%ns >= 1 ) surf_lsm_h%ol = 1.0E10_wp |
---|
839 | IF ( surf_usm_h%ns >= 1 ) surf_usm_h%ol = 1.0E10_wp |
---|
840 | ENDIF |
---|
841 | |
---|
842 | IF ( most_method == 'lookup' ) THEN |
---|
843 | |
---|
844 | ! |
---|
845 | !-- Check for roughness heterogeneity. In that case terminate run and |
---|
846 | !-- inform user. Check for both, natural and non-natural walls. |
---|
847 | IF ( surf_def_h(0)%ns >= 1 ) THEN |
---|
848 | IF ( MINVAL( surf_def_h(0)%z0h ) /= MAXVAL( surf_def_h(0)%z0h ) .OR. & |
---|
849 | MINVAL( surf_def_h(0)%z0 ) /= MAXVAL( surf_def_h(0)%z0 ) ) THEN |
---|
850 | terminate_run_l = .TRUE. |
---|
851 | ENDIF |
---|
852 | ENDIF |
---|
853 | IF ( surf_lsm_h%ns >= 1 ) THEN |
---|
854 | IF ( MINVAL( surf_lsm_h%z0h ) /= MAXVAL( surf_lsm_h%z0h ) .OR. & |
---|
855 | MINVAL( surf_lsm_h%z0 ) /= MAXVAL( surf_lsm_h%z0 ) ) THEN |
---|
856 | terminate_run_l = .TRUE. |
---|
857 | ENDIF |
---|
858 | ENDIF |
---|
859 | IF ( surf_usm_h%ns >= 1 ) THEN |
---|
860 | IF ( MINVAL( surf_usm_h%z0h ) /= MAXVAL( surf_usm_h%z0h ) .OR. & |
---|
861 | MINVAL( surf_usm_h%z0 ) /= MAXVAL( surf_usm_h%z0 ) ) THEN |
---|
862 | terminate_run_l = .TRUE. |
---|
863 | ENDIF |
---|
864 | ENDIF |
---|
865 | ! |
---|
866 | !-- Check roughness homogeneity between differt surface types. |
---|
867 | IF ( surf_lsm_h%ns >= 1 .AND. surf_def_h(0)%ns >= 1 ) THEN |
---|
868 | IF ( MINVAL( surf_lsm_h%z0h ) /= MAXVAL( surf_def_h(0)%z0h ) .OR. & |
---|
869 | MINVAL( surf_lsm_h%z0 ) /= MAXVAL( surf_def_h(0)%z0 ) ) THEN |
---|
870 | terminate_run_l = .TRUE. |
---|
871 | ENDIF |
---|
872 | ENDIF |
---|
873 | IF ( surf_usm_h%ns >= 1 .AND. surf_def_h(0)%ns >= 1 ) THEN |
---|
874 | IF ( MINVAL( surf_usm_h%z0h ) /= MAXVAL( surf_def_h(0)%z0h ) .OR. & |
---|
875 | MINVAL( surf_usm_h%z0 ) /= MAXVAL( surf_def_h(0)%z0 ) ) THEN |
---|
876 | terminate_run_l = .TRUE. |
---|
877 | ENDIF |
---|
878 | ENDIF |
---|
879 | IF ( surf_usm_h%ns >= 1 .AND. surf_lsm_h%ns >= 1 ) THEN |
---|
880 | IF ( MINVAL( surf_usm_h%z0h ) /= MAXVAL( surf_lsm_h%z0h ) .OR. & |
---|
881 | MINVAL( surf_usm_h%z0 ) /= MAXVAL( surf_lsm_h%z0 ) ) THEN |
---|
882 | terminate_run_l = .TRUE. |
---|
883 | ENDIF |
---|
884 | ENDIF |
---|
885 | |
---|
886 | |
---|
887 | #if defined( __parallel ) |
---|
888 | ! |
---|
889 | !-- Make a logical OR for all processes. Force termiation of model if result |
---|
890 | !-- is TRUE |
---|
891 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
---|
892 | CALL MPI_ALLREDUCE( terminate_run_l, terminate_run, 1, MPI_LOGICAL, & |
---|
893 | MPI_LOR, comm2d, ierr ) |
---|
894 | #else |
---|
895 | terminate_run = terminate_run_l |
---|
896 | #endif |
---|
897 | |
---|
898 | IF ( terminate_run ) THEN |
---|
899 | message_string = 'most_method = "lookup" cannot be used in ' // & |
---|
900 | 'combination with a prescribed roughness ' // & |
---|
901 | 'heterogeneity' |
---|
902 | CALL message( 'surface_layer_fluxes', 'PA0116', 1, 2, 0, 6, 0 ) |
---|
903 | ENDIF |
---|
904 | |
---|
905 | ALLOCATE( zeta_tmp(0:num_steps-1) ) |
---|
906 | |
---|
907 | ! |
---|
908 | !-- Use the lowest possible value for z_mo |
---|
909 | k = nzb |
---|
910 | z_mo = zu(k+1) - zw(k) |
---|
911 | |
---|
912 | ! |
---|
913 | !-- Calculate z/L range from zeta_stretch to zeta_max using 90% of the |
---|
914 | !-- available steps (num_steps). The calculation is done with negative |
---|
915 | !-- values of zeta in order to simplify the stretching in the free |
---|
916 | !-- convection limit for the remaining 10% of steps. |
---|
917 | zeta_tmp(0) = - zeta_max |
---|
918 | num_steps_n = ( num_steps * 9 / 10 ) - 1 |
---|
919 | zeta_step = (zeta_max - zeta_stretch) / REAL(num_steps_n) |
---|
920 | |
---|
921 | DO li = 1, num_steps_n |
---|
922 | zeta_tmp(li) = zeta_tmp(li-1) + zeta_step |
---|
923 | ENDDO |
---|
924 | |
---|
925 | ! |
---|
926 | !-- Calculate stretching factor for the free convection range |
---|
927 | DO WHILE ( ABS( (regr-regr_old) / regr_old ) > 1.0E-10_wp ) |
---|
928 | regr_old = regr |
---|
929 | regr = ( 1.0_wp - ( -zeta_min / zeta_step ) * ( 1.0_wp - regr ) & |
---|
930 | )**( 10.0_wp / REAL(num_steps) ) |
---|
931 | ENDDO |
---|
932 | |
---|
933 | ! |
---|
934 | !-- Calculate z/L range from zeta_min to zeta_stretch |
---|
935 | DO li = num_steps_n+1, num_steps-1 |
---|
936 | zeta_tmp(li) = zeta_tmp(li-1) + zeta_step |
---|
937 | zeta_step = zeta_step * regr |
---|
938 | ENDDO |
---|
939 | |
---|
940 | ! |
---|
941 | !-- Save roughness lengths to temporary variables |
---|
942 | IF ( surf_def_h(0)%ns >= 1 ) THEN |
---|
943 | z0h_min = surf_def_h(0)%z0h(1) |
---|
944 | z0_min = surf_def_h(0)%z0(1) |
---|
945 | ELSEIF ( surf_lsm_h%ns >= 1 ) THEN |
---|
946 | z0h_min = surf_lsm_h%z0h(1) |
---|
947 | z0_min = surf_lsm_h%z0(1) |
---|
948 | ELSEIF ( surf_usm_h%ns >= 1 ) THEN |
---|
949 | z0h_min = surf_usm_h%z0h(1) |
---|
950 | z0_min = surf_usm_h%z0(1) |
---|
951 | ENDIF |
---|
952 | ! |
---|
953 | !-- Calculate lookup table for the Richardson number versus Obukhov length |
---|
954 | !-- The Richardson number (rib) is defined depending on the choice of |
---|
955 | !-- boundary conditions for temperature |
---|
956 | IF ( ibc_pt_b == 1 ) THEN |
---|
957 | DO li = 0, num_steps-1 |
---|
958 | ol_tab(li) = - z_mo / zeta_tmp(num_steps-1-li) |
---|
959 | rib_tab(li) = z_mo / ol_tab(li) / ( LOG( z_mo / z0_min ) & |
---|
960 | - psi_m( z_mo / ol_tab(li) ) & |
---|
961 | + psi_m( z0_min / ol_tab(li) ) & |
---|
962 | )**3 |
---|
963 | ENDDO |
---|
964 | ELSE |
---|
965 | DO li = 0, num_steps-1 |
---|
966 | ol_tab(li) = - z_mo / zeta_tmp(num_steps-1-li) |
---|
967 | rib_tab(li) = z_mo / ol_tab(li) * ( LOG( z_mo / z0h_min ) & |
---|
968 | - psi_h( z_mo / ol_tab(li) ) & |
---|
969 | + psi_h( z0h_min / ol_tab(li) ) & |
---|
970 | ) & |
---|
971 | / ( LOG( z_mo / z0_min ) & |
---|
972 | - psi_m( z_mo / ol_tab(li) ) & |
---|
973 | + psi_m( z0_min / ol_tab(li) ) & |
---|
974 | )**2 |
---|
975 | ENDDO |
---|
976 | ENDIF |
---|
977 | |
---|
978 | ! |
---|
979 | !-- Determine minimum values of rib in the lookup table. Set upper limit |
---|
980 | !-- to critical Richardson number (0.25) |
---|
981 | rib_min = MINVAL(rib_tab) |
---|
982 | rib_max = 0.25 !MAXVAL(rib_tab) |
---|
983 | |
---|
984 | DEALLOCATE( zeta_tmp ) |
---|
985 | ENDIF |
---|
986 | |
---|
987 | END SUBROUTINE init_surface_layer_fluxes |
---|
988 | |
---|
989 | |
---|
990 | !------------------------------------------------------------------------------! |
---|
991 | ! Description: |
---|
992 | ! ------------ |
---|
993 | !> Compute the absolute value of the horizontal velocity (relative to the |
---|
994 | !> surface) for horizontal surface elements. This is required by all methods. |
---|
995 | !------------------------------------------------------------------------------! |
---|
996 | SUBROUTINE calc_uvw_abs |
---|
997 | |
---|
998 | IMPLICIT NONE |
---|
999 | |
---|
1000 | INTEGER(iwp) :: i !< running index x direction |
---|
1001 | INTEGER(iwp) :: ibit !< flag to mask computation of relative velocity in case of downward-facing surfaces |
---|
1002 | INTEGER(iwp) :: j !< running index y direction |
---|
1003 | INTEGER(iwp) :: k !< running index z direction |
---|
1004 | INTEGER(iwp) :: m !< running index surface elements |
---|
1005 | |
---|
1006 | REAL(wp) :: w_lfc !< local free convection velocity scale |
---|
1007 | ! |
---|
1008 | !-- ibit is 1 for upward-facing surfaces, zero for downward-facing surfaces. |
---|
1009 | ibit = MERGE( 1, 0, .NOT. downward ) |
---|
1010 | |
---|
1011 | DO m = 1, surf%ns |
---|
1012 | |
---|
1013 | i = surf%i(m) |
---|
1014 | j = surf%j(m) |
---|
1015 | k = surf%k(m) |
---|
1016 | |
---|
1017 | ! |
---|
1018 | !-- Calculate free convection velocity scale w_lfc is |
---|
1019 | !-- use_free_convection_scaling = .T.. This will maintain a horizontal |
---|
1020 | !-- velocity even for very weak wind convective conditions. SIGN is used |
---|
1021 | !-- to set w_lfc to zero under stable conditions. |
---|
1022 | IF ( use_free_convection_scaling ) THEN |
---|
1023 | w_lfc = ABS(g / surf%pt1(m) * surf%z_mo(m) * surf%shf(m)) |
---|
1024 | w_lfc = ( 0.5_wp * ( w_lfc + SIGN(w_lfc,surf%shf(m)) ) )**(0.33333_wp) |
---|
1025 | ELSE |
---|
1026 | w_lfc = 0.0_wp |
---|
1027 | ENDIF |
---|
1028 | |
---|
1029 | ! |
---|
1030 | !-- Compute the absolute value of the horizontal velocity. |
---|
1031 | !-- (relative to the surface in case the lower surface is the ocean). |
---|
1032 | !-- Please note, in new surface modelling concept the index values changed, |
---|
1033 | !-- i.e. the reference grid point is not the surface-grid point itself but |
---|
1034 | !-- the first grid point outside of the topography. |
---|
1035 | !-- Note, in case of coupled ocean-atmosphere simulations relative velocity |
---|
1036 | !-- with respect to the ocean surface is used, hence, (k-1,j,i) values |
---|
1037 | !-- are used to calculate the absolute velocity. |
---|
1038 | !-- However, this do not apply for downward-facing walls. To mask this, |
---|
1039 | !-- use ibit, which checks for upward/downward-facing surfaces. |
---|
1040 | surf%uvw_abs(m) = SQRT( & |
---|
1041 | ( 0.5_wp * ( u(k,j,i) + u(k,j,i+1) & |
---|
1042 | - ( u(k-1,j,i) + u(k-1,j,i+1) & |
---|
1043 | ) * ibit & |
---|
1044 | ) & |
---|
1045 | )**2 + & |
---|
1046 | ( 0.5_wp * ( v(k,j,i) + v(k,j+1,i) & |
---|
1047 | - ( v(k-1,j,i) + v(k-1,j+1,i) & |
---|
1048 | ) * ibit & |
---|
1049 | ) & |
---|
1050 | )**2 + w_lfc**2 & |
---|
1051 | ) |
---|
1052 | |
---|
1053 | |
---|
1054 | |
---|
1055 | ENDDO |
---|
1056 | |
---|
1057 | END SUBROUTINE calc_uvw_abs |
---|
1058 | |
---|
1059 | |
---|
1060 | !------------------------------------------------------------------------------! |
---|
1061 | ! Description: |
---|
1062 | ! ------------ |
---|
1063 | !> Compute the absolute value of the horizontal velocity (relative to the |
---|
1064 | !> surface) for horizontal surface elements. This is required by all methods. |
---|
1065 | !------------------------------------------------------------------------------! |
---|
1066 | SUBROUTINE calc_uvw_abs_v_ugrid |
---|
1067 | |
---|
1068 | IMPLICIT NONE |
---|
1069 | |
---|
1070 | INTEGER(iwp) :: i !< running index x direction |
---|
1071 | INTEGER(iwp) :: j !< running index y direction |
---|
1072 | INTEGER(iwp) :: k !< running index z direction |
---|
1073 | INTEGER(iwp) :: m !< running index surface elements |
---|
1074 | |
---|
1075 | REAL(wp) :: u_i !< u-component on xu-grid |
---|
1076 | REAL(wp) :: w_i !< w-component on xu-grid |
---|
1077 | |
---|
1078 | |
---|
1079 | DO m = 1, surf%ns |
---|
1080 | i = surf%i(m) |
---|
1081 | j = surf%j(m) |
---|
1082 | k = surf%k(m) |
---|
1083 | ! |
---|
1084 | !-- Compute the absolute value of the surface parallel velocity on u-grid. |
---|
1085 | u_i = u(k,j,i) |
---|
1086 | w_i = 0.25_wp * ( w(k-1,j,i-1) + w(k-1,j,i) + & |
---|
1087 | w(k,j,i-1) + w(k,j,i) ) |
---|
1088 | |
---|
1089 | surf%uvw_abs(m) = SQRT( u_i**2 + w_i**2 ) |
---|
1090 | |
---|
1091 | ENDDO |
---|
1092 | |
---|
1093 | END SUBROUTINE calc_uvw_abs_v_ugrid |
---|
1094 | |
---|
1095 | !------------------------------------------------------------------------------! |
---|
1096 | ! Description: |
---|
1097 | ! ------------ |
---|
1098 | !> Compute the absolute value of the horizontal velocity (relative to the |
---|
1099 | !> surface) for horizontal surface elements. This is required by all methods. |
---|
1100 | !------------------------------------------------------------------------------! |
---|
1101 | SUBROUTINE calc_uvw_abs_v_vgrid |
---|
1102 | |
---|
1103 | IMPLICIT NONE |
---|
1104 | |
---|
1105 | INTEGER(iwp) :: i !< running index x direction |
---|
1106 | INTEGER(iwp) :: j !< running index y direction |
---|
1107 | INTEGER(iwp) :: k !< running index z direction |
---|
1108 | INTEGER(iwp) :: m !< running index surface elements |
---|
1109 | |
---|
1110 | REAL(wp) :: v_i !< v-component on yv-grid |
---|
1111 | REAL(wp) :: w_i !< w-component on yv-grid |
---|
1112 | |
---|
1113 | |
---|
1114 | DO m = 1, surf%ns |
---|
1115 | i = surf%i(m) |
---|
1116 | j = surf%j(m) |
---|
1117 | k = surf%k(m) |
---|
1118 | |
---|
1119 | v_i = u(k,j,i) |
---|
1120 | w_i = 0.25_wp * ( w(k-1,j-1,i) + w(k-1,j,i) + & |
---|
1121 | w(k,j-1,i) + w(k,j,i) ) |
---|
1122 | |
---|
1123 | surf%uvw_abs(m) = SQRT( v_i**2 + w_i**2 ) |
---|
1124 | |
---|
1125 | ENDDO |
---|
1126 | |
---|
1127 | END SUBROUTINE calc_uvw_abs_v_vgrid |
---|
1128 | |
---|
1129 | !------------------------------------------------------------------------------! |
---|
1130 | ! Description: |
---|
1131 | ! ------------ |
---|
1132 | !> Compute the absolute value of the horizontal velocity (relative to the |
---|
1133 | !> surface) for horizontal surface elements. This is required by all methods. |
---|
1134 | !------------------------------------------------------------------------------! |
---|
1135 | SUBROUTINE calc_uvw_abs_v_wgrid |
---|
1136 | |
---|
1137 | IMPLICIT NONE |
---|
1138 | |
---|
1139 | INTEGER(iwp) :: i !< running index x direction |
---|
1140 | INTEGER(iwp) :: j !< running index y direction |
---|
1141 | INTEGER(iwp) :: k !< running index z direction |
---|
1142 | INTEGER(iwp) :: m !< running index surface elements |
---|
1143 | |
---|
1144 | REAL(wp) :: u_i !< u-component on x-zw-grid |
---|
1145 | REAL(wp) :: v_i !< v-component on y-zw-grid |
---|
1146 | REAL(wp) :: w_i !< w-component on zw-grid |
---|
1147 | ! |
---|
1148 | !-- North- (l=0) and south-facing (l=1) surfaces |
---|
1149 | IF ( l == 0 .OR. l == 1 ) THEN |
---|
1150 | DO m = 1, surf%ns |
---|
1151 | i = surf%i(m) |
---|
1152 | j = surf%j(m) |
---|
1153 | k = surf%k(m) |
---|
1154 | |
---|
1155 | u_i = 0.25_wp * ( u(k+1,j,i+1) + u(k+1,j,i) + & |
---|
1156 | u(k,j,i+1) + u(k,j,i) ) |
---|
1157 | v_i = 0.0_wp |
---|
1158 | w_i = w(k,j,i) |
---|
1159 | |
---|
1160 | surf%uvw_abs(m) = SQRT( u_i**2 + v_i**2 + w_i**2 ) |
---|
1161 | ENDDO |
---|
1162 | ! |
---|
1163 | !-- East- (l=2) and west-facing (l=3) surfaces |
---|
1164 | ELSE |
---|
1165 | DO m = 1, surf%ns |
---|
1166 | i = surf%i(m) |
---|
1167 | j = surf%j(m) |
---|
1168 | k = surf%k(m) |
---|
1169 | |
---|
1170 | u_i = 0.0_wp |
---|
1171 | v_i = 0.25_wp * ( v(k+1,j+1,i) + v(k+1,j,i) + & |
---|
1172 | v(k,j+1,i) + v(k,j,i) ) |
---|
1173 | w_i = w(k,j,i) |
---|
1174 | |
---|
1175 | surf%uvw_abs(m) = SQRT( u_i**2 + v_i**2 + w_i**2 ) |
---|
1176 | ENDDO |
---|
1177 | ENDIF |
---|
1178 | |
---|
1179 | END SUBROUTINE calc_uvw_abs_v_wgrid |
---|
1180 | |
---|
1181 | !------------------------------------------------------------------------------! |
---|
1182 | ! Description: |
---|
1183 | ! ------------ |
---|
1184 | !> Compute the absolute value of the horizontal velocity (relative to the |
---|
1185 | !> surface) for horizontal surface elements. This is required by all methods. |
---|
1186 | !------------------------------------------------------------------------------! |
---|
1187 | SUBROUTINE calc_uvw_abs_v_sgrid |
---|
1188 | |
---|
1189 | IMPLICIT NONE |
---|
1190 | |
---|
1191 | INTEGER(iwp) :: i !< running index x direction |
---|
1192 | INTEGER(iwp) :: j !< running index y direction |
---|
1193 | INTEGER(iwp) :: k !< running index z direction |
---|
1194 | INTEGER(iwp) :: m !< running index surface elements |
---|
1195 | |
---|
1196 | REAL(wp) :: u_i !< u-component on scalar grid |
---|
1197 | REAL(wp) :: v_i !< v-component on scalar grid |
---|
1198 | REAL(wp) :: w_i !< w-component on scalar grid |
---|
1199 | |
---|
1200 | ! |
---|
1201 | !-- North- (l=0) and south-facing (l=1) walls |
---|
1202 | IF ( l == 0 .OR. l == 1 ) THEN |
---|
1203 | DO m = 1, surf%ns |
---|
1204 | i = surf%i(m) |
---|
1205 | j = surf%j(m) |
---|
1206 | k = surf%k(m) |
---|
1207 | |
---|
1208 | u_i = 0.5_wp * ( u(k,j,i) + u(k,j,i+1) ) |
---|
1209 | v_i = 0.0_wp |
---|
1210 | w_i = 0.5_wp * ( w(k,j,i) + w(k-1,j,i) ) |
---|
1211 | |
---|
1212 | surf%uvw_abs(m) = SQRT( u_i**2 + v_i**2 + w_i**2 ) |
---|
1213 | ENDDO |
---|
1214 | ! |
---|
1215 | !-- East- (l=2) and west-facing (l=3) walls |
---|
1216 | ELSE |
---|
1217 | DO m = 1, surf%ns |
---|
1218 | i = surf%i(m) |
---|
1219 | j = surf%j(m) |
---|
1220 | k = surf%k(m) |
---|
1221 | |
---|
1222 | u_i = 0.0_wp |
---|
1223 | v_i = 0.5_wp * ( v(k,j,i) + v(k,j+1,i) ) |
---|
1224 | w_i = 0.5_wp * ( w(k,j,i) + w(k-1,j,i) ) |
---|
1225 | |
---|
1226 | surf%uvw_abs(m) = SQRT( u_i**2 + v_i**2 + w_i**2 ) |
---|
1227 | ENDDO |
---|
1228 | ENDIF |
---|
1229 | |
---|
1230 | END SUBROUTINE calc_uvw_abs_v_sgrid |
---|
1231 | |
---|
1232 | |
---|
1233 | !------------------------------------------------------------------------------! |
---|
1234 | ! Description: |
---|
1235 | ! ------------ |
---|
1236 | !> Calculate the Obukhov length (L) and Richardson flux number (z/L) |
---|
1237 | !------------------------------------------------------------------------------! |
---|
1238 | SUBROUTINE calc_ol |
---|
1239 | |
---|
1240 | IMPLICIT NONE |
---|
1241 | |
---|
1242 | INTEGER(iwp) :: iter !< Newton iteration step |
---|
1243 | INTEGER(iwp) :: li !< look index |
---|
1244 | INTEGER(iwp) :: m !< loop variable over all horizontal wall elements |
---|
1245 | |
---|
1246 | REAL(wp) :: f, & !< Function for Newton iteration: f = Ri - [...]/[...]^2 = 0 |
---|
1247 | f_d_ol, & !< Derivative of f |
---|
1248 | ol_l, & !< Lower bound of L for Newton iteration |
---|
1249 | ol_m, & !< Previous value of L for Newton iteration |
---|
1250 | ol_old, & !< Previous time step value of L |
---|
1251 | ol_u !< Upper bound of L for Newton iteration |
---|
1252 | |
---|
1253 | IF ( TRIM( most_method ) /= 'circular' ) THEN |
---|
1254 | ! |
---|
1255 | !-- Evaluate bulk Richardson number (calculation depends on |
---|
1256 | !-- definition based on setting of boundary conditions |
---|
1257 | IF ( ibc_pt_b /= 1 ) THEN |
---|
1258 | IF ( humidity ) THEN |
---|
1259 | !$OMP PARALLEL DO PRIVATE( z_mo ) |
---|
1260 | DO m = 1, surf%ns |
---|
1261 | |
---|
1262 | z_mo = surf%z_mo(m) |
---|
1263 | |
---|
1264 | surf%rib(m) = g * z_mo & |
---|
1265 | * ( surf%vpt1(m) - surf%vpt_surface(m) ) & |
---|
1266 | / ( surf%uvw_abs(m)**2 * surf%vpt1(m) & |
---|
1267 | + 1.0E-20_wp ) |
---|
1268 | ENDDO |
---|
1269 | ELSE |
---|
1270 | !$OMP PARALLEL DO PRIVATE( z_mo ) |
---|
1271 | DO m = 1, surf%ns |
---|
1272 | |
---|
1273 | z_mo = surf%z_mo(m) |
---|
1274 | |
---|
1275 | surf%rib(m) = g * z_mo & |
---|
1276 | * ( surf%pt1(m) - surf%pt_surface(m) ) & |
---|
1277 | / ( surf%uvw_abs(m)**2 * surf%pt1(m) & |
---|
1278 | + 1.0E-20_wp ) |
---|
1279 | ENDDO |
---|
1280 | ENDIF |
---|
1281 | ELSE |
---|
1282 | IF ( humidity ) THEN |
---|
1283 | !$OMP PARALLEL DO PRIVATE( k, z_mo ) |
---|
1284 | DO m = 1, surf%ns |
---|
1285 | |
---|
1286 | k = surf%k(m) |
---|
1287 | |
---|
1288 | z_mo = surf%z_mo(m) |
---|
1289 | |
---|
1290 | surf%rib(m) = - g * z_mo * ( ( 1.0_wp + 0.61_wp & |
---|
1291 | * surf%qv1(m) ) * surf%shf(m) + 0.61_wp & |
---|
1292 | * surf%pt1(m) * surf%qsws(m) ) * & |
---|
1293 | drho_air_zw(k-1) / & |
---|
1294 | ( surf%uvw_abs(m)**3 * surf%vpt1(m) * kappa**2 & |
---|
1295 | + 1.0E-20_wp ) |
---|
1296 | ENDDO |
---|
1297 | ELSE |
---|
1298 | !$OMP PARALLEL DO PRIVATE( k, z_mo ) |
---|
1299 | DO m = 1, surf%ns |
---|
1300 | |
---|
1301 | k = surf%k(m) |
---|
1302 | |
---|
1303 | z_mo = surf%z_mo(m) |
---|
1304 | |
---|
1305 | surf%rib(m) = - g * z_mo * surf%shf(m) * & |
---|
1306 | drho_air_zw(k-1) / & |
---|
1307 | ( surf%uvw_abs(m)**3 * surf%pt1(m) * kappa**2 & |
---|
1308 | + 1.0E-20_wp ) |
---|
1309 | ENDDO |
---|
1310 | ENDIF |
---|
1311 | ENDIF |
---|
1312 | |
---|
1313 | ENDIF |
---|
1314 | |
---|
1315 | |
---|
1316 | ! |
---|
1317 | !-- Calculate the Obukhov length either using a Newton iteration |
---|
1318 | !-- method, via a lookup table, or using the old circular way |
---|
1319 | IF ( TRIM( most_method ) == 'newton' ) THEN |
---|
1320 | |
---|
1321 | DO m = 1, surf%ns |
---|
1322 | |
---|
1323 | i = surf%i(m) |
---|
1324 | j = surf%j(m) |
---|
1325 | |
---|
1326 | z_mo = surf%z_mo(m) |
---|
1327 | |
---|
1328 | ! |
---|
1329 | !-- Store current value in case the Newton iteration fails |
---|
1330 | ol_old = surf%ol(m) |
---|
1331 | |
---|
1332 | ! |
---|
1333 | !-- Ensure that the bulk Richardson number and the Obukhov |
---|
1334 | !-- length have the same sign |
---|
1335 | IF ( surf%rib(m) * surf%ol(m) < 0.0_wp .OR. & |
---|
1336 | ABS( surf%ol(m) ) == ol_max ) THEN |
---|
1337 | IF ( surf%rib(m) > 1.0_wp ) surf%ol(m) = 0.01_wp |
---|
1338 | IF ( surf%rib(m) < 0.0_wp ) surf%ol(m) = -0.01_wp |
---|
1339 | ENDIF |
---|
1340 | ! |
---|
1341 | !-- Iteration to find Obukhov length |
---|
1342 | iter = 0 |
---|
1343 | DO |
---|
1344 | iter = iter + 1 |
---|
1345 | ! |
---|
1346 | !-- In case of divergence, use the value of the previous time step |
---|
1347 | IF ( iter > 1000 ) THEN |
---|
1348 | surf%ol(m) = ol_old |
---|
1349 | EXIT |
---|
1350 | ENDIF |
---|
1351 | |
---|
1352 | ol_m = surf%ol(m) |
---|
1353 | ol_l = ol_m - 0.001_wp * ol_m |
---|
1354 | ol_u = ol_m + 0.001_wp * ol_m |
---|
1355 | |
---|
1356 | |
---|
1357 | IF ( ibc_pt_b /= 1 ) THEN |
---|
1358 | ! |
---|
1359 | !-- Calculate f = Ri - [...]/[...]^2 = 0 |
---|
1360 | f = surf%rib(m) - ( z_mo / ol_m ) * ( & |
---|
1361 | LOG( z_mo / surf%z0h(m) ) & |
---|
1362 | - psi_h( z_mo / ol_m ) & |
---|
1363 | + psi_h( surf%z0h(m) / & |
---|
1364 | ol_m ) & |
---|
1365 | ) & |
---|
1366 | / ( LOG( z_mo / surf%z0(m) ) & |
---|
1367 | - psi_m( z_mo / ol_m ) & |
---|
1368 | + psi_m( surf%z0(m) / & |
---|
1369 | ol_m ) & |
---|
1370 | )**2 |
---|
1371 | |
---|
1372 | ! |
---|
1373 | !-- Calculate df/dL |
---|
1374 | f_d_ol = ( - ( z_mo / ol_u ) * ( LOG( z_mo / & |
---|
1375 | surf%z0h(m) ) & |
---|
1376 | - psi_h( z_mo / ol_u ) & |
---|
1377 | + psi_h( surf%z0h(m) / ol_u ) & |
---|
1378 | ) & |
---|
1379 | / ( LOG( z_mo / surf%z0(m) ) & |
---|
1380 | - psi_m( z_mo / ol_u ) & |
---|
1381 | + psi_m( surf%z0(m) / ol_u ) & |
---|
1382 | )**2 & |
---|
1383 | + ( z_mo / ol_l ) * ( LOG( z_mo / surf%z0h(m) ) & |
---|
1384 | - psi_h( z_mo / ol_l ) & |
---|
1385 | + psi_h( surf%z0h(m) / ol_l ) & |
---|
1386 | ) & |
---|
1387 | / ( LOG( z_mo / surf%z0(m) ) & |
---|
1388 | - psi_m( z_mo / ol_l ) & |
---|
1389 | + psi_m( surf%z0(m) / ol_l ) & |
---|
1390 | )**2 & |
---|
1391 | ) / ( ol_u - ol_l ) |
---|
1392 | ELSE |
---|
1393 | ! |
---|
1394 | !-- Calculate f = Ri - 1 /[...]^3 = 0 |
---|
1395 | f = surf%rib(m) - ( z_mo / ol_m ) / & |
---|
1396 | ( LOG( z_mo / surf%z0(m) ) & |
---|
1397 | - psi_m( z_mo / ol_m ) & |
---|
1398 | + psi_m( surf%z0(m) / ol_m ) & |
---|
1399 | )**3 |
---|
1400 | |
---|
1401 | ! |
---|
1402 | !-- Calculate df/dL |
---|
1403 | f_d_ol = ( - ( z_mo / ol_u ) / ( LOG( z_mo / & |
---|
1404 | surf%z0(m) ) & |
---|
1405 | - psi_m( z_mo / ol_u ) & |
---|
1406 | + psi_m( surf%z0(m) / ol_u ) & |
---|
1407 | )**3 & |
---|
1408 | + ( z_mo / ol_l ) / ( LOG( z_mo / surf%z0(m) ) & |
---|
1409 | - psi_m( z_mo / ol_l ) & |
---|
1410 | + psi_m( surf%z0(m) / ol_l ) & |
---|
1411 | )**3 & |
---|
1412 | ) / ( ol_u - ol_l ) |
---|
1413 | ENDIF |
---|
1414 | ! |
---|
1415 | !-- Calculate new L |
---|
1416 | surf%ol(m) = ol_m - f / f_d_ol |
---|
1417 | |
---|
1418 | ! |
---|
1419 | !-- Ensure that the bulk Richardson number and the Obukhov |
---|
1420 | !-- length have the same sign and ensure convergence. |
---|
1421 | IF ( surf%ol(m) * ol_m < 0.0_wp ) surf%ol(m) = ol_m * 0.5_wp |
---|
1422 | ! |
---|
1423 | !-- If unrealistic value occurs, set L to the maximum |
---|
1424 | !-- value that is allowed |
---|
1425 | IF ( ABS( surf%ol(m) ) > ol_max ) THEN |
---|
1426 | surf%ol(m) = ol_max |
---|
1427 | EXIT |
---|
1428 | ENDIF |
---|
1429 | ! |
---|
1430 | !-- Check for convergence |
---|
1431 | IF ( ABS( ( surf%ol(m) - ol_m ) / & |
---|
1432 | surf%ol(m) ) < 1.0E-4_wp ) THEN |
---|
1433 | EXIT |
---|
1434 | ELSE |
---|
1435 | CYCLE |
---|
1436 | ENDIF |
---|
1437 | |
---|
1438 | ENDDO |
---|
1439 | ENDDO |
---|
1440 | |
---|
1441 | ELSEIF ( TRIM( most_method ) == 'lookup' ) THEN |
---|
1442 | |
---|
1443 | !$OMP PARALLEL DO PRIVATE( i, j, z_mo, li ) FIRSTPRIVATE( li_bnd ) LASTPRIVATE( li_bnd ) |
---|
1444 | DO m = 1, surf%ns |
---|
1445 | |
---|
1446 | i = surf%i(m) |
---|
1447 | j = surf%j(m) |
---|
1448 | ! |
---|
1449 | !-- If the bulk Richardson number is outside the range of the lookup |
---|
1450 | !-- table, set it to the exceeding threshold value |
---|
1451 | IF ( surf%rib(m) < rib_min ) surf%rib(m) = rib_min |
---|
1452 | IF ( surf%rib(m) > rib_max ) surf%rib(m) = rib_max |
---|
1453 | |
---|
1454 | ! |
---|
1455 | !-- Find the correct index bounds for linear interpolation. As the |
---|
1456 | !-- Richardson number will not differ very much from time step to |
---|
1457 | !-- time step , use the index from the last step and search in the |
---|
1458 | !-- correct direction |
---|
1459 | li = li_bnd |
---|
1460 | IF ( rib_tab(li) - surf%rib(m) > 0.0_wp ) THEN |
---|
1461 | DO WHILE ( rib_tab(li-1) - surf%rib(m) > 0.0_wp .AND. li > 0 ) |
---|
1462 | li = li-1 |
---|
1463 | ENDDO |
---|
1464 | ELSE |
---|
1465 | DO WHILE ( rib_tab(li) - surf%rib(m) < 0.0_wp & |
---|
1466 | .AND. li < num_steps-1 ) |
---|
1467 | li = li+1 |
---|
1468 | ENDDO |
---|
1469 | ENDIF |
---|
1470 | li_bnd = li |
---|
1471 | |
---|
1472 | ! |
---|
1473 | !-- Linear interpolation to find the correct value of z/L |
---|
1474 | surf%ol(m) = ( ol_tab(li-1) + ( ol_tab(li) - ol_tab(li-1) ) & |
---|
1475 | / ( rib_tab(li) - rib_tab(li-1) ) & |
---|
1476 | * ( surf%rib(m) - rib_tab(li-1) ) ) |
---|
1477 | |
---|
1478 | ENDDO |
---|
1479 | |
---|
1480 | ELSEIF ( TRIM( most_method ) == 'circular' ) THEN |
---|
1481 | |
---|
1482 | IF ( .NOT. humidity ) THEN |
---|
1483 | !$OMP PARALLEL DO PRIVATE( z_mo ) |
---|
1484 | DO m = 1, surf%ns |
---|
1485 | |
---|
1486 | z_mo = surf%z_mo(m) |
---|
1487 | |
---|
1488 | surf%ol(m) = ( surf%pt1(m) * surf%us(m)**2 ) / & |
---|
1489 | ( kappa * g * & |
---|
1490 | surf%ts(m) + 1E-30_wp ) |
---|
1491 | ! |
---|
1492 | !-- Limit the value range of the Obukhov length. |
---|
1493 | !-- This is necessary for very small velocities (u,v --> 1), because |
---|
1494 | !-- the absolute value of ol can then become very small, which in |
---|
1495 | !-- consequence would result in very large shear stresses and very |
---|
1496 | !-- small momentum fluxes (both are generally unrealistic). |
---|
1497 | IF ( ( z_mo / ( surf%ol(m) + 1E-30_wp ) ) < zeta_min ) & |
---|
1498 | surf%ol(m) = z_mo / zeta_min |
---|
1499 | IF ( ( z_mo / ( surf%ol(m) + 1E-30_wp ) ) > zeta_max ) & |
---|
1500 | surf%ol(m) = z_mo / zeta_max |
---|
1501 | |
---|
1502 | ENDDO |
---|
1503 | ELSEIF ( bulk_cloud_model .OR. cloud_droplets ) THEN |
---|
1504 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
1505 | DO m = 1, surf%ns |
---|
1506 | |
---|
1507 | i = surf%i(m) |
---|
1508 | j = surf%j(m) |
---|
1509 | k = surf%k(m) |
---|
1510 | |
---|
1511 | z_mo = surf%z_mo(m) |
---|
1512 | |
---|
1513 | |
---|
1514 | surf%ol(m) = ( surf%vpt1(m) * surf%us(m)**2 ) / & |
---|
1515 | ( kappa * g * ( surf%ts(m) + & |
---|
1516 | 0.61_wp * surf%pt1(m) * surf%us(m) & |
---|
1517 | + 0.61_wp * surf%qv1(m) * surf%ts(m) - & |
---|
1518 | surf%ts(m) * ql(k,j,i) ) + 1E-30_wp ) |
---|
1519 | ! |
---|
1520 | !-- Limit the value range of the Obukhov length. |
---|
1521 | !-- This is necessary for very small velocities (u,v --> 1), because |
---|
1522 | !-- the absolute value of ol can then become very small, which in |
---|
1523 | !-- consequence would result in very large shear stresses and very |
---|
1524 | !-- small momentum fluxes (both are generally unrealistic). |
---|
1525 | IF ( ( z_mo / ( surf%ol(m) + 1E-30_wp ) ) < zeta_min ) & |
---|
1526 | surf%ol(m) = z_mo / zeta_min |
---|
1527 | IF ( ( z_mo / ( surf%ol(m) + 1E-30_wp ) ) > zeta_max ) & |
---|
1528 | surf%ol(m) = z_mo / zeta_max |
---|
1529 | |
---|
1530 | ENDDO |
---|
1531 | ELSE |
---|
1532 | |
---|
1533 | !$OMP PARALLEL DO PRIVATE( z_mo ) |
---|
1534 | DO m = 1, surf%ns |
---|
1535 | |
---|
1536 | z_mo = surf%z_mo(m) |
---|
1537 | |
---|
1538 | surf%ol(m) = ( surf%vpt1(m) * surf%us(m)**2 ) / & |
---|
1539 | ( kappa * g * ( surf%ts(m) + 0.61_wp * surf%pt1(m) * & |
---|
1540 | surf%qs(m) + 0.61_wp * surf%qv1(m) * & |
---|
1541 | surf%ts(m) ) + 1E-30_wp ) |
---|
1542 | |
---|
1543 | ! |
---|
1544 | !-- Limit the value range of the Obukhov length. |
---|
1545 | !-- This is necessary for very small velocities (u,v --> 1), because |
---|
1546 | !-- the absolute value of ol can then become very small, which in |
---|
1547 | !-- consequence would result in very large shear stresses and very |
---|
1548 | !-- small momentum fluxes (both are generally unrealistic). |
---|
1549 | IF ( ( z_mo / ( surf%ol(m) + 1E-30_wp ) ) < zeta_min ) & |
---|
1550 | surf%ol(m) = z_mo / zeta_min |
---|
1551 | IF ( ( z_mo / ( surf%ol(m) + 1E-30_wp ) ) > zeta_max ) & |
---|
1552 | surf%ol(m) = z_mo / zeta_max |
---|
1553 | |
---|
1554 | ENDDO |
---|
1555 | |
---|
1556 | ENDIF |
---|
1557 | |
---|
1558 | ENDIF |
---|
1559 | |
---|
1560 | END SUBROUTINE calc_ol |
---|
1561 | |
---|
1562 | ! |
---|
1563 | !-- Calculate friction velocity u* |
---|
1564 | SUBROUTINE calc_us |
---|
1565 | |
---|
1566 | IMPLICIT NONE |
---|
1567 | |
---|
1568 | INTEGER(iwp) :: m !< loop variable over all horizontal surf elements |
---|
1569 | |
---|
1570 | ! |
---|
1571 | !-- Compute u* at horizontal surfaces at the scalars' grid points |
---|
1572 | IF ( .NOT. surf_vertical ) THEN |
---|
1573 | ! |
---|
1574 | !-- Compute u* at upward-facing surfaces |
---|
1575 | IF ( .NOT. downward ) THEN |
---|
1576 | !$OMP PARALLEL DO PRIVATE( z_mo ) |
---|
1577 | DO m = 1, surf%ns |
---|
1578 | |
---|
1579 | z_mo = surf%z_mo(m) |
---|
1580 | ! |
---|
1581 | !-- Compute u* at the scalars' grid points |
---|
1582 | surf%us(m) = kappa * surf%uvw_abs(m) / & |
---|
1583 | ( LOG( z_mo / surf%z0(m) ) & |
---|
1584 | - psi_m( z_mo / surf%ol(m) ) & |
---|
1585 | + psi_m( surf%z0(m) / surf%ol(m) ) ) |
---|
1586 | |
---|
1587 | ENDDO |
---|
1588 | ! |
---|
1589 | !-- Compute u* at downward-facing surfaces. This case, do not consider |
---|
1590 | !-- any stability. |
---|
1591 | ELSE |
---|
1592 | !$OMP PARALLEL DO PRIVATE( z_mo ) |
---|
1593 | DO m = 1, surf%ns |
---|
1594 | |
---|
1595 | z_mo = surf%z_mo(m) |
---|
1596 | ! |
---|
1597 | !-- Compute u* at the scalars' grid points |
---|
1598 | surf%us(m) = kappa * surf%uvw_abs(m) / LOG( z_mo / surf%z0(m) ) |
---|
1599 | |
---|
1600 | ENDDO |
---|
1601 | ENDIF |
---|
1602 | ! |
---|
1603 | !-- Compute u* at vertical surfaces at the u/v/v grid, respectively. |
---|
1604 | !-- No stability is considered in this case. |
---|
1605 | ELSE |
---|
1606 | !$OMP PARALLEL DO PRIVATE( z_mo ) |
---|
1607 | DO m = 1, surf%ns |
---|
1608 | z_mo = surf%z_mo(m) |
---|
1609 | |
---|
1610 | surf%us(m) = kappa * surf%uvw_abs(m) / LOG( z_mo / surf%z0(m) ) |
---|
1611 | ENDDO |
---|
1612 | ENDIF |
---|
1613 | |
---|
1614 | END SUBROUTINE calc_us |
---|
1615 | |
---|
1616 | ! |
---|
1617 | !-- Calculate potential temperature, specific humidity, and virtual potential |
---|
1618 | !-- temperature at first grid level |
---|
1619 | SUBROUTINE calc_pt_q |
---|
1620 | |
---|
1621 | IMPLICIT NONE |
---|
1622 | |
---|
1623 | INTEGER(iwp) :: m !< loop variable over all horizontal surf elements |
---|
1624 | |
---|
1625 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
1626 | DO m = 1, surf%ns |
---|
1627 | |
---|
1628 | i = surf%i(m) |
---|
1629 | j = surf%j(m) |
---|
1630 | k = surf%k(m) |
---|
1631 | |
---|
1632 | IF ( bulk_cloud_model ) THEN |
---|
1633 | surf%pt1(m) = pt(k,j,i) + lv_d_cp * d_exner(k) * ql(k,j,i) |
---|
1634 | surf%qv1(m) = q(k,j,i) - ql(k,j,i) |
---|
1635 | ELSEIF( cloud_droplets ) THEN |
---|
1636 | surf%pt1(m) = pt(k,j,i) + lv_d_cp * d_exner(k) * ql(k,j,i) |
---|
1637 | surf%qv1(m) = q(k,j,i) |
---|
1638 | ELSE |
---|
1639 | surf%pt1(m) = pt(k,j,i) |
---|
1640 | IF ( humidity ) THEN |
---|
1641 | surf%qv1(m) = q(k,j,i) |
---|
1642 | ELSE |
---|
1643 | surf%qv1(m) = 0.0_wp |
---|
1644 | ENDIF |
---|
1645 | ENDIF |
---|
1646 | |
---|
1647 | IF ( humidity ) THEN |
---|
1648 | surf%vpt1(m) = pt(k,j,i) * ( 1.0_wp + 0.61_wp * q(k,j,i) ) |
---|
1649 | ENDIF |
---|
1650 | |
---|
1651 | ENDDO |
---|
1652 | |
---|
1653 | END SUBROUTINE calc_pt_q |
---|
1654 | |
---|
1655 | |
---|
1656 | ! |
---|
1657 | !-- Set potential temperature at surface grid level. |
---|
1658 | !-- ( only for upward-facing surfs ) |
---|
1659 | SUBROUTINE calc_pt_surface |
---|
1660 | |
---|
1661 | IMPLICIT NONE |
---|
1662 | |
---|
1663 | INTEGER(iwp) :: k_off !< index offset between surface and atmosphere grid point (-1 for upward-, +1 for downward-facing walls) |
---|
1664 | INTEGER(iwp) :: m !< loop variable over all horizontal surf elements |
---|
1665 | |
---|
1666 | k_off = surf%koff |
---|
1667 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
1668 | DO m = 1, surf%ns |
---|
1669 | |
---|
1670 | i = surf%i(m) |
---|
1671 | j = surf%j(m) |
---|
1672 | k = surf%k(m) |
---|
1673 | |
---|
1674 | surf%pt_surface(m) = pt(k+k_off,j,i) |
---|
1675 | |
---|
1676 | ENDDO |
---|
1677 | |
---|
1678 | END SUBROUTINE calc_pt_surface |
---|
1679 | |
---|
1680 | ! |
---|
1681 | !-- Set mixing ratio at surface grid level. ( Only for upward-facing surfs. ) |
---|
1682 | SUBROUTINE calc_q_surface |
---|
1683 | |
---|
1684 | IMPLICIT NONE |
---|
1685 | |
---|
1686 | INTEGER(iwp) :: k_off !< index offset between surface and atmosphere grid point (-1 for upward-, +1 for downward-facing walls) |
---|
1687 | INTEGER(iwp) :: m !< loop variable over all horizontal surf elements |
---|
1688 | |
---|
1689 | k_off = surf%koff |
---|
1690 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
1691 | DO m = 1, surf%ns |
---|
1692 | |
---|
1693 | i = surf%i(m) |
---|
1694 | j = surf%j(m) |
---|
1695 | k = surf%k(m) |
---|
1696 | |
---|
1697 | surf%q_surface(m) = q(k+k_off,j,i) |
---|
1698 | |
---|
1699 | ENDDO |
---|
1700 | |
---|
1701 | END SUBROUTINE calc_q_surface |
---|
1702 | |
---|
1703 | ! |
---|
1704 | !-- Set virtual potential temperature at surface grid level. |
---|
1705 | !-- ( only for upward-facing surfs ) |
---|
1706 | SUBROUTINE calc_vpt_surface |
---|
1707 | |
---|
1708 | IMPLICIT NONE |
---|
1709 | |
---|
1710 | INTEGER(iwp) :: k_off !< index offset between surface and atmosphere grid point (-1 for upward-, +1 for downward-facing walls) |
---|
1711 | INTEGER(iwp) :: m !< loop variable over all horizontal surf elements |
---|
1712 | |
---|
1713 | k_off = surf%koff |
---|
1714 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
1715 | DO m = 1, surf%ns |
---|
1716 | |
---|
1717 | i = surf%i(m) |
---|
1718 | j = surf%j(m) |
---|
1719 | k = surf%k(m) |
---|
1720 | |
---|
1721 | surf%vpt_surface(m) = vpt(k+k_off,j,i) |
---|
1722 | |
---|
1723 | ENDDO |
---|
1724 | |
---|
1725 | END SUBROUTINE calc_vpt_surface |
---|
1726 | |
---|
1727 | ! |
---|
1728 | !-- Calculate the other MOST scaling parameters theta*, q*, (qc*, qr*, nc*, nr*) |
---|
1729 | SUBROUTINE calc_scaling_parameters |
---|
1730 | |
---|
1731 | IMPLICIT NONE |
---|
1732 | |
---|
1733 | |
---|
1734 | INTEGER(iwp) :: m !< loop variable over all horizontal surf elements |
---|
1735 | INTEGER(iwp) :: lsp !< running index for chemical species |
---|
1736 | ! |
---|
1737 | !-- Compute theta* at horizontal surfaces |
---|
1738 | IF ( constant_heatflux .AND. .NOT. surf_vertical ) THEN |
---|
1739 | ! |
---|
1740 | !-- For a given heat flux in the surface layer: |
---|
1741 | |
---|
1742 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
1743 | DO m = 1, surf%ns |
---|
1744 | |
---|
1745 | i = surf%i(m) |
---|
1746 | j = surf%j(m) |
---|
1747 | k = surf%k(m) |
---|
1748 | |
---|
1749 | surf%ts(m) = -surf%shf(m) * drho_air_zw(k-1) / & |
---|
1750 | ( surf%us(m) + 1E-30_wp ) |
---|
1751 | |
---|
1752 | ! |
---|
1753 | !-- ts must be limited, because otherwise overflow may occur in case |
---|
1754 | !-- of us=0 when computing ol further below |
---|
1755 | IF ( surf%ts(m) < -1.05E5_wp ) surf%ts(m) = -1.0E5_wp |
---|
1756 | IF ( surf%ts(m) > 1.0E5_wp ) surf%ts(m) = 1.0E5_wp |
---|
1757 | |
---|
1758 | ENDDO |
---|
1759 | |
---|
1760 | ELSEIF ( .NOT. surf_vertical ) THEN |
---|
1761 | ! |
---|
1762 | !-- For a given surface temperature: |
---|
1763 | IF ( large_scale_forcing .AND. lsf_surf ) THEN |
---|
1764 | |
---|
1765 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
1766 | DO m = 1, surf%ns |
---|
1767 | i = surf%i(m) |
---|
1768 | j = surf%j(m) |
---|
1769 | k = surf%k(m) |
---|
1770 | |
---|
1771 | pt(k-1,j,i) = pt_surface |
---|
1772 | ENDDO |
---|
1773 | ENDIF |
---|
1774 | |
---|
1775 | !$OMP PARALLEL DO PRIVATE( z_mo ) |
---|
1776 | DO m = 1, surf%ns |
---|
1777 | |
---|
1778 | z_mo = surf%z_mo(m) |
---|
1779 | |
---|
1780 | surf%ts(m) = kappa * ( surf%pt1(m) - surf%pt_surface(m) ) & |
---|
1781 | / ( LOG( z_mo / surf%z0h(m) ) & |
---|
1782 | - psi_h( z_mo / surf%ol(m) ) & |
---|
1783 | + psi_h( surf%z0h(m) / surf%ol(m) ) ) |
---|
1784 | |
---|
1785 | ENDDO |
---|
1786 | |
---|
1787 | ENDIF |
---|
1788 | ! |
---|
1789 | !-- Compute theta* at vertical surfaces. This is only required in case of |
---|
1790 | !-- land-surface model, in order to compute aerodynamical resistance. |
---|
1791 | IF ( surf_vertical ) THEN |
---|
1792 | !$OMP PARALLEL DO PRIVATE( i, j ) |
---|
1793 | DO m = 1, surf%ns |
---|
1794 | |
---|
1795 | i = surf%i(m) |
---|
1796 | j = surf%j(m) |
---|
1797 | surf%ts(m) = -surf%shf(m) / ( surf%us(m) + 1E-30_wp ) |
---|
1798 | ! |
---|
1799 | !-- ts must be limited, because otherwise overflow may occur in case |
---|
1800 | !-- of us=0 when computing ol further below |
---|
1801 | IF ( surf%ts(m) < -1.05E5_wp ) surf%ts(m) = -1.0E5_wp |
---|
1802 | IF ( surf%ts(m) > 1.0E5_wp ) surf%ts(m) = 1.0E5_wp |
---|
1803 | |
---|
1804 | ENDDO |
---|
1805 | ENDIF |
---|
1806 | |
---|
1807 | ! |
---|
1808 | !-- If required compute q* at horizontal surfaces |
---|
1809 | IF ( humidity ) THEN |
---|
1810 | IF ( constant_waterflux .AND. .NOT. surf_vertical ) THEN |
---|
1811 | ! |
---|
1812 | !-- For a given water flux in the surface layer |
---|
1813 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
1814 | DO m = 1, surf%ns |
---|
1815 | |
---|
1816 | i = surf%i(m) |
---|
1817 | j = surf%j(m) |
---|
1818 | k = surf%k(m) |
---|
1819 | surf%qs(m) = -surf%qsws(m) * drho_air_zw(k-1) / & |
---|
1820 | ( surf%us(m) + 1E-30_wp ) |
---|
1821 | |
---|
1822 | ENDDO |
---|
1823 | |
---|
1824 | ELSEIF ( .NOT. surf_vertical ) THEN |
---|
1825 | coupled_run = ( coupling_mode == 'atmosphere_to_ocean' .AND. & |
---|
1826 | run_coupled ) |
---|
1827 | |
---|
1828 | IF ( large_scale_forcing .AND. lsf_surf ) THEN |
---|
1829 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
1830 | DO m = 1, surf%ns |
---|
1831 | |
---|
1832 | i = surf%i(m) |
---|
1833 | j = surf%j(m) |
---|
1834 | k = surf%k(m) |
---|
1835 | q(k-1,j,i) = q_surface |
---|
1836 | |
---|
1837 | ENDDO |
---|
1838 | ENDIF |
---|
1839 | |
---|
1840 | ! |
---|
1841 | !-- Assume saturation for atmosphere coupled to ocean (but not |
---|
1842 | !-- in case of precursor runs) |
---|
1843 | IF ( coupled_run ) THEN |
---|
1844 | !$OMP PARALLEL DO PRIVATE( i, j, k, e_s ) |
---|
1845 | DO m = 1, surf%ns |
---|
1846 | i = surf%i(m) |
---|
1847 | j = surf%j(m) |
---|
1848 | k = surf%k(m) |
---|
1849 | e_s = 6.1_wp * & |
---|
1850 | EXP( 0.07_wp * ( MIN(pt(k-1,j,i),pt(k,j,i)) & |
---|
1851 | - 273.15_wp ) ) |
---|
1852 | q(k-1,j,i) = rd_d_rv * e_s / ( surface_pressure - e_s ) |
---|
1853 | ENDDO |
---|
1854 | ENDIF |
---|
1855 | |
---|
1856 | IF ( bulk_cloud_model .OR. cloud_droplets ) THEN |
---|
1857 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
1858 | DO m = 1, surf%ns |
---|
1859 | |
---|
1860 | i = surf%i(m) |
---|
1861 | j = surf%j(m) |
---|
1862 | k = surf%k(m) |
---|
1863 | |
---|
1864 | z_mo = surf%z_mo(m) |
---|
1865 | |
---|
1866 | surf%qs(m) = kappa * ( surf%qv1(m) - surf%q_surface(m) ) & |
---|
1867 | / ( LOG( z_mo / surf%z0q(m) ) & |
---|
1868 | - psi_h( z_mo / surf%ol(m) ) & |
---|
1869 | + psi_h( surf%z0q(m) / & |
---|
1870 | surf%ol(m) ) ) |
---|
1871 | ENDDO |
---|
1872 | ELSE |
---|
1873 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
1874 | DO m = 1, surf%ns |
---|
1875 | |
---|
1876 | i = surf%i(m) |
---|
1877 | j = surf%j(m) |
---|
1878 | k = surf%k(m) |
---|
1879 | |
---|
1880 | z_mo = surf%z_mo(m) |
---|
1881 | |
---|
1882 | surf%qs(m) = kappa * ( q(k,j,i) - q(k-1,j,i) ) & |
---|
1883 | / ( LOG( z_mo / surf%z0q(m) ) & |
---|
1884 | - psi_h( z_mo / surf%ol(m) ) & |
---|
1885 | + psi_h( surf%z0q(m) / & |
---|
1886 | surf%ol(m) ) ) |
---|
1887 | ENDDO |
---|
1888 | ENDIF |
---|
1889 | ENDIF |
---|
1890 | ! |
---|
1891 | !-- Compute q* at vertical surfaces |
---|
1892 | IF ( surf_vertical ) THEN |
---|
1893 | !$OMP PARALLEL DO PRIVATE( i, j ) |
---|
1894 | DO m = 1, surf%ns |
---|
1895 | |
---|
1896 | i = surf%i(m) |
---|
1897 | j = surf%j(m) |
---|
1898 | surf%qs(m) = -surf%qsws(m) / ( surf%us(m) + 1E-30_wp ) |
---|
1899 | |
---|
1900 | ENDDO |
---|
1901 | ENDIF |
---|
1902 | ENDIF |
---|
1903 | |
---|
1904 | ! |
---|
1905 | !-- If required compute s* |
---|
1906 | IF ( passive_scalar ) THEN |
---|
1907 | ! |
---|
1908 | !-- At horizontal surfaces |
---|
1909 | IF ( constant_scalarflux .AND. .NOT. surf_vertical ) THEN |
---|
1910 | ! |
---|
1911 | !-- For a given scalar flux in the surface layer |
---|
1912 | !$OMP PARALLEL DO PRIVATE( i, j ) |
---|
1913 | DO m = 1, surf%ns |
---|
1914 | i = surf%i(m) |
---|
1915 | j = surf%j(m) |
---|
1916 | surf%ss(m) = -surf%ssws(m) / ( surf%us(m) + 1E-30_wp ) |
---|
1917 | ENDDO |
---|
1918 | ENDIF |
---|
1919 | ! |
---|
1920 | !-- At vertical surfaces |
---|
1921 | IF ( surf_vertical ) THEN |
---|
1922 | !$OMP PARALLEL DO PRIVATE( i, j ) |
---|
1923 | DO m = 1, surf%ns |
---|
1924 | i = surf%i(m) |
---|
1925 | j = surf%j(m) |
---|
1926 | surf%ss(m) = -surf%ssws(m) / ( surf%us(m) + 1E-30_wp ) |
---|
1927 | ENDDO |
---|
1928 | ENDIF |
---|
1929 | ENDIF |
---|
1930 | |
---|
1931 | ! |
---|
1932 | !-- If required compute cs* (chemical species) |
---|
1933 | IF ( air_chemistry ) THEN |
---|
1934 | ! |
---|
1935 | !-- At horizontal surfaces |
---|
1936 | DO lsp = 1, nvar |
---|
1937 | IF ( constant_csflux(lsp) .AND. .NOT. surf_vertical ) THEN |
---|
1938 | !-- For a given chemical species' flux in the surface layer |
---|
1939 | !$OMP PARALLEL DO PRIVATE( i, j ) |
---|
1940 | DO m = 1, surf%ns |
---|
1941 | i = surf%i(m) |
---|
1942 | j = surf%j(m) |
---|
1943 | surf%css(lsp,m) = -surf%cssws(lsp,m) / ( surf%us(m) + 1E-30_wp ) |
---|
1944 | ENDDO |
---|
1945 | ENDIF |
---|
1946 | ENDDO |
---|
1947 | ! |
---|
1948 | !-- At vertical surfaces |
---|
1949 | IF ( surf_vertical ) THEN |
---|
1950 | DO lsp = 1, nvar |
---|
1951 | !$OMP PARALLEL DO PRIVATE( i, j ) |
---|
1952 | DO m = 1, surf%ns |
---|
1953 | i = surf%i(m) |
---|
1954 | j = surf%j(m) |
---|
1955 | surf%css(lsp,m) = -surf%cssws(lsp,m) / ( surf%us(m) + 1E-30_wp ) |
---|
1956 | ENDDO |
---|
1957 | ENDDO |
---|
1958 | ENDIF |
---|
1959 | ENDIF |
---|
1960 | |
---|
1961 | ! |
---|
1962 | !-- If required compute qc* and nc* |
---|
1963 | IF ( bulk_cloud_model .AND. microphysics_morrison .AND. & |
---|
1964 | .NOT. surf_vertical ) THEN |
---|
1965 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
1966 | DO m = 1, surf%ns |
---|
1967 | |
---|
1968 | i = surf%i(m) |
---|
1969 | j = surf%j(m) |
---|
1970 | k = surf%k(m) |
---|
1971 | |
---|
1972 | z_mo = surf%z_mo(m) |
---|
1973 | |
---|
1974 | surf%qcs(m) = kappa * ( qc(k,j,i) - qc(k-1,j,i) ) & |
---|
1975 | / ( LOG( z_mo / surf%z0q(m) ) & |
---|
1976 | - psi_h( z_mo / surf%ol(m) ) & |
---|
1977 | + psi_h( surf%z0q(m) / surf%ol(m) ) ) |
---|
1978 | |
---|
1979 | surf%ncs(m) = kappa * ( nc(k,j,i) - nc(k-1,j,i) ) & |
---|
1980 | / ( LOG( z_mo / surf%z0q(m) ) & |
---|
1981 | - psi_h( z_mo / surf%ol(m) ) & |
---|
1982 | + psi_h( surf%z0q(m) / surf%ol(m) ) ) |
---|
1983 | ENDDO |
---|
1984 | |
---|
1985 | ENDIF |
---|
1986 | |
---|
1987 | ! |
---|
1988 | !-- If required compute qr* and nr* |
---|
1989 | IF ( bulk_cloud_model .AND. microphysics_seifert .AND. & |
---|
1990 | .NOT. surf_vertical ) THEN |
---|
1991 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
1992 | DO m = 1, surf%ns |
---|
1993 | |
---|
1994 | i = surf%i(m) |
---|
1995 | j = surf%j(m) |
---|
1996 | k = surf%k(m) |
---|
1997 | |
---|
1998 | z_mo = surf%z_mo(m) |
---|
1999 | |
---|
2000 | surf%qrs(m) = kappa * ( qr(k,j,i) - qr(k-1,j,i) ) & |
---|
2001 | / ( LOG( z_mo / surf%z0q(m) ) & |
---|
2002 | - psi_h( z_mo / surf%ol(m) ) & |
---|
2003 | + psi_h( surf%z0q(m) / surf%ol(m) ) ) |
---|
2004 | |
---|
2005 | surf%nrs(m) = kappa * ( nr(k,j,i) - nr(k-1,j,i) ) & |
---|
2006 | / ( LOG( z_mo / surf%z0q(m) ) & |
---|
2007 | - psi_h( z_mo / surf%ol(m) ) & |
---|
2008 | + psi_h( surf%z0q(m) / surf%ol(m) ) ) |
---|
2009 | ENDDO |
---|
2010 | |
---|
2011 | ENDIF |
---|
2012 | |
---|
2013 | END SUBROUTINE calc_scaling_parameters |
---|
2014 | |
---|
2015 | |
---|
2016 | |
---|
2017 | ! |
---|
2018 | !-- Calculate surface fluxes usws, vsws, shf, qsws, (qcsws, qrsws, ncsws, nrsws) |
---|
2019 | SUBROUTINE calc_surface_fluxes |
---|
2020 | |
---|
2021 | IMPLICIT NONE |
---|
2022 | |
---|
2023 | INTEGER(iwp) :: m !< loop variable over all horizontal surf elements |
---|
2024 | INTEGER(iwp) :: lsp !< running index for chemical species |
---|
2025 | |
---|
2026 | REAL(wp) :: dum !< dummy to precalculate logarithm |
---|
2027 | REAL(wp) :: flag_u !< flag indicating u-grid, used for calculation of horizontal momentum fluxes at vertical surfaces |
---|
2028 | REAL(wp) :: flag_v !< flag indicating v-grid, used for calculation of horizontal momentum fluxes at vertical surfaces |
---|
2029 | REAL(wp), DIMENSION(:), ALLOCATABLE :: u_i !< u-component interpolated onto scalar grid point, required for momentum fluxes at vertical surfaces |
---|
2030 | REAL(wp), DIMENSION(:), ALLOCATABLE :: v_i !< v-component interpolated onto scalar grid point, required for momentum fluxes at vertical surfaces |
---|
2031 | REAL(wp), DIMENSION(:), ALLOCATABLE :: w_i !< w-component interpolated onto scalar grid point, required for momentum fluxes at vertical surfaces |
---|
2032 | |
---|
2033 | ! |
---|
2034 | !-- Calcuate surface fluxes at horizontal walls |
---|
2035 | IF ( .NOT. surf_vertical ) THEN |
---|
2036 | ! |
---|
2037 | !-- Compute u'w' for the total model domain at upward-facing surfaces. |
---|
2038 | !-- First compute the corresponding component of u* and square it. |
---|
2039 | IF ( .NOT. downward ) THEN |
---|
2040 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
2041 | DO m = 1, surf%ns |
---|
2042 | |
---|
2043 | i = surf%i(m) |
---|
2044 | j = surf%j(m) |
---|
2045 | k = surf%k(m) |
---|
2046 | |
---|
2047 | z_mo = surf%z_mo(m) |
---|
2048 | |
---|
2049 | surf%usws(m) = kappa * ( u(k,j,i) - u(k-1,j,i) ) & |
---|
2050 | / ( LOG( z_mo / surf%z0(m) ) & |
---|
2051 | - psi_m( z_mo / surf%ol(m) ) & |
---|
2052 | + psi_m( surf%z0(m) / surf%ol(m) ) ) |
---|
2053 | ! |
---|
2054 | !-- Please note, the computation of usws is not fully accurate. Actually |
---|
2055 | !-- a further interpolation of us onto the u-grid, where usws is defined, |
---|
2056 | !-- is required. However, this is not done as this would require several |
---|
2057 | !-- data transfers between 2D-grid and the surf-type. |
---|
2058 | !-- The impact of the missing interpolation is negligible as several |
---|
2059 | !-- tests had shown. |
---|
2060 | !-- Same also for ol. |
---|
2061 | surf%usws(m) = -surf%usws(m) * surf%us(m) * rho_air_zw(k-1) |
---|
2062 | |
---|
2063 | ENDDO |
---|
2064 | ! |
---|
2065 | !-- At downward-facing surfaces |
---|
2066 | ELSE |
---|
2067 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
2068 | DO m = 1, surf%ns |
---|
2069 | |
---|
2070 | i = surf%i(m) |
---|
2071 | j = surf%j(m) |
---|
2072 | k = surf%k(m) |
---|
2073 | |
---|
2074 | z_mo = surf%z_mo(m) |
---|
2075 | |
---|
2076 | surf%usws(m) = kappa * u(k,j,i) / LOG( z_mo / surf%z0(m) ) |
---|
2077 | surf%usws(m) = surf%usws(m) * surf%us(m) * rho_air_zw(k) |
---|
2078 | |
---|
2079 | ENDDO |
---|
2080 | ENDIF |
---|
2081 | |
---|
2082 | ! |
---|
2083 | !-- Compute v'w' for the total model domain. |
---|
2084 | !-- First compute the corresponding component of u* and square it. |
---|
2085 | !-- Upward-facing surfaces |
---|
2086 | IF ( .NOT. downward ) THEN |
---|
2087 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
2088 | DO m = 1, surf%ns |
---|
2089 | i = surf%i(m) |
---|
2090 | j = surf%j(m) |
---|
2091 | k = surf%k(m) |
---|
2092 | |
---|
2093 | z_mo = surf%z_mo(m) |
---|
2094 | |
---|
2095 | surf%vsws(m) = kappa * ( v(k,j,i) - v(k-1,j,i) ) & |
---|
2096 | / ( LOG( z_mo / surf%z0(m) ) & |
---|
2097 | - psi_m( z_mo / surf%ol(m) ) & |
---|
2098 | + psi_m( surf%z0(m) / surf%ol(m) ) ) |
---|
2099 | ! |
---|
2100 | !-- Please note, the computation of vsws is not fully accurate. Actually |
---|
2101 | !-- a further interpolation of us onto the v-grid, where vsws is defined, |
---|
2102 | !-- is required. However, this is not done as this would require several |
---|
2103 | !-- data transfers between 2D-grid and the surf-type. |
---|
2104 | !-- The impact of the missing interpolation is negligible as several |
---|
2105 | !-- tests had shown. |
---|
2106 | !-- Same also for ol. |
---|
2107 | surf%vsws(m) = -surf%vsws(m) * surf%us(m) * rho_air_zw(k-1) |
---|
2108 | ENDDO |
---|
2109 | ! |
---|
2110 | !-- Downward-facing surfaces |
---|
2111 | ELSE |
---|
2112 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
2113 | DO m = 1, surf%ns |
---|
2114 | i = surf%i(m) |
---|
2115 | j = surf%j(m) |
---|
2116 | k = surf%k(m) |
---|
2117 | |
---|
2118 | z_mo = surf%z_mo(m) |
---|
2119 | |
---|
2120 | surf%vsws(m) = kappa * v(k,j,i) / LOG( z_mo / surf%z0(m) ) |
---|
2121 | surf%vsws(m) = surf%vsws(m) * surf%us(m) * rho_air_zw(k) |
---|
2122 | ENDDO |
---|
2123 | ENDIF |
---|
2124 | ! |
---|
2125 | !-- Compute the vertical kinematic heat flux |
---|
2126 | IF ( .NOT. constant_heatflux .AND. ( ( time_since_reference_point& |
---|
2127 | <= skip_time_do_lsm .AND. simulated_time > 0.0_wp ) .OR. & |
---|
2128 | .NOT. land_surface ) .AND. .NOT. urban_surface .AND. & |
---|
2129 | .NOT. downward ) THEN |
---|
2130 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
2131 | DO m = 1, surf%ns |
---|
2132 | i = surf%i(m) |
---|
2133 | j = surf%j(m) |
---|
2134 | k = surf%k(m) |
---|
2135 | surf%shf(m) = -surf%ts(m) * surf%us(m) * rho_air_zw(k-1) |
---|
2136 | ENDDO |
---|
2137 | ENDIF |
---|
2138 | ! |
---|
2139 | !-- Compute the vertical water flux |
---|
2140 | IF ( .NOT. constant_waterflux .AND. humidity .AND. & |
---|
2141 | ( ( time_since_reference_point <= skip_time_do_lsm .AND. & |
---|
2142 | simulated_time > 0.0_wp ) .OR. .NOT. land_surface ) .AND. & |
---|
2143 | .NOT. urban_surface .AND. .NOT. downward ) THEN |
---|
2144 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
2145 | DO m = 1, surf%ns |
---|
2146 | i = surf%i(m) |
---|
2147 | j = surf%j(m) |
---|
2148 | k = surf%k(m) |
---|
2149 | surf%qsws(m) = -surf%qs(m) * surf%us(m) * rho_air_zw(k-1) |
---|
2150 | ENDDO |
---|
2151 | ENDIF |
---|
2152 | ! |
---|
2153 | !-- Compute the vertical scalar flux |
---|
2154 | IF ( .NOT. constant_scalarflux .AND. passive_scalar .AND. & |
---|
2155 | .NOT. downward ) THEN |
---|
2156 | !$OMP PARALLEL DO PRIVATE( i, j ) |
---|
2157 | DO m = 1, surf%ns |
---|
2158 | |
---|
2159 | i = surf%i(m) |
---|
2160 | j = surf%j(m) |
---|
2161 | surf%ssws(m) = -surf%ss(m) * surf%us(m) |
---|
2162 | |
---|
2163 | ENDDO |
---|
2164 | ENDIF |
---|
2165 | ! |
---|
2166 | !-- Compute the vertical chemical species' flux |
---|
2167 | DO lsp = 1, nvar |
---|
2168 | IF ( .NOT. constant_csflux(lsp) .AND. air_chemistry .AND. & |
---|
2169 | .NOT. downward ) THEN |
---|
2170 | !$OMP PARALLEL DO PRIVATE( i, j ) |
---|
2171 | DO m = 1, surf%ns |
---|
2172 | i = surf%i(m) |
---|
2173 | j = surf%j(m) |
---|
2174 | surf%cssws(lsp,m) = -surf%css(lsp,m) * surf%us(m) |
---|
2175 | ENDDO |
---|
2176 | ENDIF |
---|
2177 | ENDDO |
---|
2178 | |
---|
2179 | ! |
---|
2180 | !-- Compute (turbulent) fluxes of cloud water content and cloud drop conc. |
---|
2181 | IF ( bulk_cloud_model .AND. microphysics_morrison .AND. & |
---|
2182 | .NOT. downward) THEN |
---|
2183 | !$OMP PARALLEL DO PRIVATE( i, j ) |
---|
2184 | DO m = 1, surf%ns |
---|
2185 | |
---|
2186 | i = surf%i(m) |
---|
2187 | j = surf%j(m) |
---|
2188 | |
---|
2189 | surf%qcsws(m) = -surf%qcs(m) * surf%us(m) |
---|
2190 | surf%ncsws(m) = -surf%ncs(m) * surf%us(m) |
---|
2191 | ENDDO |
---|
2192 | ENDIF |
---|
2193 | ! |
---|
2194 | !-- Compute (turbulent) fluxes of rain water content and rain drop conc. |
---|
2195 | IF ( bulk_cloud_model .AND. microphysics_seifert .AND. & |
---|
2196 | .NOT. downward) THEN |
---|
2197 | !$OMP PARALLEL DO PRIVATE( i, j ) |
---|
2198 | DO m = 1, surf%ns |
---|
2199 | |
---|
2200 | i = surf%i(m) |
---|
2201 | j = surf%j(m) |
---|
2202 | |
---|
2203 | surf%qrsws(m) = -surf%qrs(m) * surf%us(m) |
---|
2204 | surf%nrsws(m) = -surf%nrs(m) * surf%us(m) |
---|
2205 | ENDDO |
---|
2206 | ENDIF |
---|
2207 | |
---|
2208 | ! |
---|
2209 | !-- Bottom boundary condition for the TKE. |
---|
2210 | IF ( ibc_e_b == 2 ) THEN |
---|
2211 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
2212 | DO m = 1, surf%ns |
---|
2213 | |
---|
2214 | i = surf%i(m) |
---|
2215 | j = surf%j(m) |
---|
2216 | k = surf%k(m) |
---|
2217 | |
---|
2218 | e(k,j,i) = ( surf%us(m) / 0.1_wp )**2 |
---|
2219 | ! |
---|
2220 | !-- As a test: cm = 0.4 |
---|
2221 | ! e(k,j,i) = ( us(j,i) / 0.4_wp )**2 |
---|
2222 | e(k-1,j,i) = e(k,j,i) |
---|
2223 | |
---|
2224 | ENDDO |
---|
2225 | ENDIF |
---|
2226 | ! |
---|
2227 | !-- Calcuate surface fluxes at vertical surfaces. No stability is considered. |
---|
2228 | ELSE |
---|
2229 | ! |
---|
2230 | !-- Compute usvs l={0,1} and vsus l={2,3} |
---|
2231 | IF ( mom_uv ) THEN |
---|
2232 | ! |
---|
2233 | !-- Generalize computation by introducing flags. At north- and south- |
---|
2234 | !-- facing surfaces u-component is used, at east- and west-facing |
---|
2235 | !-- surfaces v-component is used. |
---|
2236 | flag_u = MERGE( 1.0_wp, 0.0_wp, l == 0 .OR. l == 1 ) |
---|
2237 | flag_v = MERGE( 1.0_wp, 0.0_wp, l == 2 .OR. l == 3 ) |
---|
2238 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
2239 | DO m = 1, surf%ns |
---|
2240 | i = surf%i(m) |
---|
2241 | j = surf%j(m) |
---|
2242 | k = surf%k(m) |
---|
2243 | |
---|
2244 | z_mo = surf%z_mo(m) |
---|
2245 | |
---|
2246 | surf%mom_flux_uv(m) = kappa * & |
---|
2247 | ( flag_u * u(k,j,i) + flag_v * v(k,j,i) ) / & |
---|
2248 | LOG( z_mo / surf%z0(m) ) |
---|
2249 | |
---|
2250 | surf%mom_flux_uv(m) = & |
---|
2251 | - surf%mom_flux_uv(m) * surf%us(m) |
---|
2252 | ENDDO |
---|
2253 | ENDIF |
---|
2254 | ! |
---|
2255 | !-- Compute wsus l={0,1} and wsvs l={2,3} |
---|
2256 | IF ( mom_w ) THEN |
---|
2257 | !$OMP PARALLEL DO PRIVATE( i, j, k, z_mo ) |
---|
2258 | DO m = 1, surf%ns |
---|
2259 | i = surf%i(m) |
---|
2260 | j = surf%j(m) |
---|
2261 | k = surf%k(m) |
---|
2262 | |
---|
2263 | z_mo = surf%z_mo(m) |
---|
2264 | |
---|
2265 | surf%mom_flux_w(m) = kappa * w(k,j,i) / LOG( z_mo / surf%z0(m) ) |
---|
2266 | |
---|
2267 | surf%mom_flux_w(m) = & |
---|
2268 | - surf%mom_flux_w(m) * surf%us(m) |
---|
2269 | ENDDO |
---|
2270 | ENDIF |
---|
2271 | ! |
---|
2272 | !-- Compute momentum fluxes used for subgrid-scale TKE production at |
---|
2273 | !-- vertical surfaces. In constrast to the calculated momentum fluxes at |
---|
2274 | !-- vertical surfaces before, which are defined on the u/v/w-grid, |
---|
2275 | !-- respectively), the TKE fluxes are defined at the scalar grid. |
---|
2276 | !-- |
---|
2277 | IF ( mom_tke ) THEN |
---|
2278 | ! |
---|
2279 | !-- Precalculate velocity components at scalar grid point. |
---|
2280 | ALLOCATE( u_i(1:surf%ns) ) |
---|
2281 | ALLOCATE( v_i(1:surf%ns) ) |
---|
2282 | ALLOCATE( w_i(1:surf%ns) ) |
---|
2283 | |
---|
2284 | IF ( l == 0 .OR. l == 1 ) THEN |
---|
2285 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
2286 | DO m = 1, surf%ns |
---|
2287 | i = surf%i(m) |
---|
2288 | j = surf%j(m) |
---|
2289 | k = surf%k(m) |
---|
2290 | |
---|
2291 | u_i(m) = 0.5_wp * ( u(k,j,i) + u(k,j,i+1) ) |
---|
2292 | v_i(m) = 0.0_wp |
---|
2293 | w_i(m) = 0.5_wp * ( w(k,j,i) + w(k-1,j,i) ) |
---|
2294 | ENDDO |
---|
2295 | ELSE |
---|
2296 | !$OMP PARALLEL DO PRIVATE( i, j, k ) |
---|
2297 | DO m = 1, surf%ns |
---|
2298 | i = surf%i(m) |
---|
2299 | j = surf%j(m) |
---|
2300 | k = surf%k(m) |
---|
2301 | |
---|
2302 | u_i(m) = 0.0_wp |
---|
2303 | v_i(m) = 0.5_wp * ( v(k,j,i) + v(k,j+1,i) ) |
---|
2304 | w_i(m) = 0.5_wp * ( w(k,j,i) + w(k-1,j,i) ) |
---|
2305 | ENDDO |
---|
2306 | ENDIF |
---|
2307 | |
---|
2308 | !$OMP PARALLEL DO PRIVATE( i, j, dum, z_mo ) |
---|
2309 | DO m = 1, surf%ns |
---|
2310 | i = surf%i(m) |
---|
2311 | j = surf%j(m) |
---|
2312 | |
---|
2313 | z_mo = surf%z_mo(m) |
---|
2314 | |
---|
2315 | dum = kappa / LOG( z_mo / surf%z0(m) ) |
---|
2316 | ! |
---|
2317 | !-- usvs (l=0,1) and vsus (l=2,3) |
---|
2318 | surf%mom_flux_tke(0,m) = dum * ( u_i(m) + v_i(m) ) |
---|
2319 | ! |
---|
2320 | !-- wsvs (l=0,1) and wsus (l=2,3) |
---|
2321 | surf%mom_flux_tke(1,m) = dum * w_i(m) |
---|
2322 | |
---|
2323 | surf%mom_flux_tke(0:1,m) = & |
---|
2324 | - surf%mom_flux_tke(0:1,m) * surf%us(m) |
---|
2325 | ENDDO |
---|
2326 | ! |
---|
2327 | !-- Deallocate temporary arrays |
---|
2328 | DEALLOCATE( u_i ) |
---|
2329 | DEALLOCATE( v_i ) |
---|
2330 | DEALLOCATE( w_i ) |
---|
2331 | ENDIF |
---|
2332 | ENDIF |
---|
2333 | |
---|
2334 | END SUBROUTINE calc_surface_fluxes |
---|
2335 | |
---|
2336 | |
---|
2337 | !------------------------------------------------------------------------------! |
---|
2338 | ! Description: |
---|
2339 | ! ------------ |
---|
2340 | !> Calculates temperature near surface (10 cm) for indoor model or 2 m |
---|
2341 | !> temperature for output |
---|
2342 | !------------------------------------------------------------------------------! |
---|
2343 | SUBROUTINE calc_pt_near_surface ( z_char ) |
---|
2344 | |
---|
2345 | IMPLICIT NONE |
---|
2346 | |
---|
2347 | CHARACTER (LEN = *), INTENT(IN) :: z_char !< string identifier to identify z level |
---|
2348 | INTEGER(iwp) :: i, j, k, l, m !< running indices |
---|
2349 | |
---|
2350 | |
---|
2351 | SELECT CASE ( z_char) |
---|
2352 | |
---|
2353 | |
---|
2354 | CASE ( '10cm' ) |
---|
2355 | |
---|
2356 | DO m = 1, surf%ns |
---|
2357 | |
---|
2358 | i = surf%i(m) |
---|
2359 | j = surf%j(m) |
---|
2360 | k = surf%k(m) |
---|
2361 | |
---|
2362 | surf%pt_10cm(m) = surf%pt_surface(m) + surf%ts(m) / kappa & |
---|
2363 | * ( log( 0.1_wp / surf%z0h(m) ) & |
---|
2364 | - psi_h( 0.1_wp / surf%ol(m) ) & |
---|
2365 | + psi_h( surf%z0h(m) / surf%ol(m) ) ) |
---|
2366 | |
---|
2367 | ENDDO |
---|
2368 | |
---|
2369 | |
---|
2370 | CASE ( '2m' ) |
---|
2371 | |
---|
2372 | DO m = 1, surf%ns |
---|
2373 | |
---|
2374 | i = surf%i(m) |
---|
2375 | j = surf%j(m) |
---|
2376 | k = surf%k(m) |
---|
2377 | |
---|
2378 | surf%pt_2m(m) = surf%pt_surface(m) + surf%ts(m) / kappa & |
---|
2379 | * ( log( 2.0_wp / surf%z0h(m) ) & |
---|
2380 | - psi_h( 2.0_wp / surf%ol(m) ) & |
---|
2381 | + psi_h( surf%z0h(m) / surf%ol(m) ) ) |
---|
2382 | |
---|
2383 | ENDDO |
---|
2384 | |
---|
2385 | |
---|
2386 | END SELECT |
---|
2387 | |
---|
2388 | END SUBROUTINE calc_pt_near_surface |
---|
2389 | |
---|
2390 | |
---|
2391 | ! |
---|
2392 | !-- Integrated stability function for momentum |
---|
2393 | FUNCTION psi_m( zeta ) |
---|
2394 | |
---|
2395 | USE kinds |
---|
2396 | |
---|
2397 | IMPLICIT NONE |
---|
2398 | |
---|
2399 | REAL(wp) :: psi_m !< Integrated similarity function result |
---|
2400 | REAL(wp) :: zeta !< Stability parameter z/L |
---|
2401 | REAL(wp) :: x !< dummy variable |
---|
2402 | |
---|
2403 | REAL(wp), PARAMETER :: a = 1.0_wp !< constant |
---|
2404 | REAL(wp), PARAMETER :: b = 0.66666666666_wp !< constant |
---|
2405 | REAL(wp), PARAMETER :: c = 5.0_wp !< constant |
---|
2406 | REAL(wp), PARAMETER :: d = 0.35_wp !< constant |
---|
2407 | REAL(wp), PARAMETER :: c_d_d = c / d !< constant |
---|
2408 | REAL(wp), PARAMETER :: bc_d_d = b * c / d !< constant |
---|
2409 | |
---|
2410 | |
---|
2411 | IF ( zeta < 0.0_wp ) THEN |
---|
2412 | x = SQRT( SQRT( 1.0_wp - 16.0_wp * zeta ) ) |
---|
2413 | psi_m = pi * 0.5_wp - 2.0_wp * ATAN( x ) + LOG( ( 1.0_wp + x )**2 & |
---|
2414 | * ( 1.0_wp + x**2 ) * 0.125_wp ) |
---|
2415 | ELSE |
---|
2416 | |
---|
2417 | psi_m = - b * ( zeta - c_d_d ) * EXP( -d * zeta ) - a * zeta & |
---|
2418 | - bc_d_d |
---|
2419 | ! |
---|
2420 | !-- Old version for stable conditions (only valid for z/L < 0.5) |
---|
2421 | !-- psi_m = - 5.0_wp * zeta |
---|
2422 | |
---|
2423 | ENDIF |
---|
2424 | |
---|
2425 | END FUNCTION psi_m |
---|
2426 | |
---|
2427 | |
---|
2428 | ! |
---|
2429 | !-- Integrated stability function for heat and moisture |
---|
2430 | FUNCTION psi_h( zeta ) |
---|
2431 | |
---|
2432 | USE kinds |
---|
2433 | |
---|
2434 | IMPLICIT NONE |
---|
2435 | |
---|
2436 | REAL(wp) :: psi_h !< Integrated similarity function result |
---|
2437 | REAL(wp) :: zeta !< Stability parameter z/L |
---|
2438 | REAL(wp) :: x !< dummy variable |
---|
2439 | |
---|
2440 | REAL(wp), PARAMETER :: a = 1.0_wp !< constant |
---|
2441 | REAL(wp), PARAMETER :: b = 0.66666666666_wp !< constant |
---|
2442 | REAL(wp), PARAMETER :: c = 5.0_wp !< constant |
---|
2443 | REAL(wp), PARAMETER :: d = 0.35_wp !< constant |
---|
2444 | REAL(wp), PARAMETER :: c_d_d = c / d !< constant |
---|
2445 | REAL(wp), PARAMETER :: bc_d_d = b * c / d !< constant |
---|
2446 | |
---|
2447 | |
---|
2448 | IF ( zeta < 0.0_wp ) THEN |
---|
2449 | x = SQRT( 1.0_wp - 16.0_wp * zeta ) |
---|
2450 | psi_h = 2.0_wp * LOG( (1.0_wp + x ) / 2.0_wp ) |
---|
2451 | ELSE |
---|
2452 | psi_h = - b * ( zeta - c_d_d ) * EXP( -d * zeta ) - (1.0_wp & |
---|
2453 | + 0.66666666666_wp * a * zeta )**1.5_wp - bc_d_d & |
---|
2454 | + 1.0_wp |
---|
2455 | ! |
---|
2456 | !-- Old version for stable conditions (only valid for z/L < 0.5) |
---|
2457 | !-- psi_h = - 5.0_wp * zeta |
---|
2458 | ENDIF |
---|
2459 | |
---|
2460 | END FUNCTION psi_h |
---|
2461 | |
---|
2462 | |
---|
2463 | !------------------------------------------------------------------------------! |
---|
2464 | ! Description: |
---|
2465 | ! ------------ |
---|
2466 | !> Calculates stability function for momentum |
---|
2467 | !> |
---|
2468 | !> @author Hauke Wurps |
---|
2469 | !------------------------------------------------------------------------------! |
---|
2470 | FUNCTION phi_m( zeta ) |
---|
2471 | |
---|
2472 | IMPLICIT NONE |
---|
2473 | |
---|
2474 | REAL(wp) :: phi_m !< Value of the function |
---|
2475 | REAL(wp) :: zeta !< Stability parameter z/L |
---|
2476 | |
---|
2477 | REAL(wp), PARAMETER :: a = 16.0_wp !< constant |
---|
2478 | REAL(wp), PARAMETER :: c = 5.0_wp !< constant |
---|
2479 | |
---|
2480 | IF ( zeta < 0.0_wp ) THEN |
---|
2481 | phi_m = 1.0_wp / SQRT( SQRT( 1.0_wp - a * zeta ) ) |
---|
2482 | ELSE |
---|
2483 | phi_m = 1.0_wp + c * zeta |
---|
2484 | ENDIF |
---|
2485 | |
---|
2486 | END FUNCTION phi_m |
---|
2487 | |
---|
2488 | END MODULE surface_layer_fluxes_mod |
---|