[1682] | 1 | !> @file init_grid.f90 |
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[2000] | 2 | !------------------------------------------------------------------------------! |
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[2696] | 3 | ! This file is part of the PALM model system. |
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[1036] | 4 | ! |
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[2000] | 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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[1036] | 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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[3655] | 17 | ! Copyright 1997-2019 Leibniz Universitaet Hannover |
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[2000] | 18 | !------------------------------------------------------------------------------! |
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[1036] | 19 | ! |
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[254] | 20 | ! Current revisions: |
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[1] | 21 | ! ----------------- |
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[2233] | 22 | ! |
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[4110] | 23 | ! |
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[2233] | 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: init_grid.f90 4265 2019-10-15 16:16:24Z suehring $ |
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[4265] | 27 | ! Bugfix for last commit, exchange oro_max variable only when it is allocated |
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| 28 | ! (not necessarily the case when topography is input from ASCII file). |
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| 29 | ! |
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| 30 | ! 4245 2019-09-30 08:40:37Z pavelkrc |
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[4245] | 31 | ! Store oro_max (building z-offset) in 2D for building surfaces |
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| 32 | ! |
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| 33 | ! 4189 2019-08-26 16:19:38Z suehring |
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[4189] | 34 | ! - Add check for proper setting of namelist parameter topography |
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| 35 | ! - Set flag to indicate land surfaces in case no topography is provided |
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| 36 | ! |
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| 37 | ! 4182 2019-08-22 15:20:23Z scharf |
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[4182] | 38 | ! Corrected "Former revisions" section |
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| 39 | ! |
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| 40 | ! 4168 2019-08-16 13:50:17Z suehring |
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[4168] | 41 | ! Pre-calculate topography top index and store it on an array (replaces former |
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| 42 | ! functions get_topography_top_index) |
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| 43 | ! |
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| 44 | ! 4159 2019-08-15 13:31:35Z suehring |
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[4159] | 45 | ! Revision of topography processing. This was not consistent between 2D and 3D |
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| 46 | ! buildings. |
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| 47 | ! |
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| 48 | ! 4144 2019-08-06 09:11:47Z raasch |
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[4144] | 49 | ! relational operators .EQ., .NE., etc. replaced by ==, /=, etc. |
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| 50 | ! |
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| 51 | ! 4115 2019-07-24 12:50:49Z suehring |
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[4115] | 52 | ! Bugfix in setting near-surface flag 24, inidicating wall-bounded grid points |
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| 53 | ! |
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| 54 | ! 4110 2019-07-22 17:05:21Z suehring |
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[4110] | 55 | ! - Separate initialization of advection flags for momentum and scalars. |
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| 56 | ! - Change subroutine interface for ws_init_flags_scalar to pass boundary flags |
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| 57 | ! |
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| 58 | ! 4109 2019-07-22 17:00:34Z suehring |
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[3927] | 59 | ! Fix bad commit |
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| 60 | ! |
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| 61 | ! 3926 2019-04-23 12:56:42Z suehring |
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[3925] | 62 | ! Minor bugfix in building mapping when all building IDs in the model domain |
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| 63 | ! are missing |
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| 64 | ! |
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| 65 | ! 3857 2019-04-03 13:00:16Z knoop |
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[3855] | 66 | ! In projection of non-building 3D objects onto numerical grid remove |
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| 67 | ! dependency on building_type |
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| 68 | ! |
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| 69 | ! 3763 2019-02-25 17:33:49Z suehring |
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[3763] | 70 | ! Replace work-around for ghost point exchange of 1-byte arrays with specific |
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| 71 | ! routine as already done in other routines |
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| 72 | ! |
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| 73 | ! 3761 2019-02-25 15:31:42Z raasch |
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[3761] | 74 | ! unused variables removed |
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| 75 | ! |
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| 76 | ! 3661 2019-01-08 18:22:50Z suehring |
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[3661] | 77 | ! Remove setting of nzb_max to nzt at non-cyclic boundary PEs, instead, |
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| 78 | ! order degradation of advection scheme is handeled directly in advec_ws |
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| 79 | ! |
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| 80 | ! 3655 2019-01-07 16:51:22Z knoop |
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[3538] | 81 | ! Comment added |
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[2716] | 82 | ! |
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[4182] | 83 | ! Revision 1.1 1997/08/11 06:17:45 raasch |
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| 84 | ! Initial revision (Testversion) |
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| 85 | ! |
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| 86 | ! |
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[1] | 87 | ! Description: |
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[2696] | 88 | ! -----------------------------------------------------------------------------! |
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[1682] | 89 | !> Creating grid depending constants |
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[2696] | 90 | !> @todo: Rearrange topo flag list |
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| 91 | !> @todo: reference 3D buildings on top of orography is not tested and may need |
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| 92 | !> further improvement for steep slopes |
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| 93 | !> @todo: Use more advanced setting of building type at filled holes |
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[1] | 94 | !------------------------------------------------------------------------------! |
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[1682] | 95 | SUBROUTINE init_grid |
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| 96 | |
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[1942] | 97 | USE advec_ws, & |
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[4109] | 98 | ONLY: ws_init_flags_momentum, ws_init_flags_scalar |
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[1] | 99 | |
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[1320] | 100 | USE arrays_3d, & |
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[3857] | 101 | ONLY: dd2zu, ddzu, ddzu_pres, ddzw, dzu, dzw, x, xu, y, yv, zu, zw |
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[1320] | 102 | |
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[1353] | 103 | USE control_parameters, & |
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[3761] | 104 | ONLY: bc_lr_cyc, bc_ns_cyc, & |
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[4109] | 105 | bc_dirichlet_l, & |
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| 106 | bc_dirichlet_n, & |
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| 107 | bc_dirichlet_r, & |
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| 108 | bc_dirichlet_s, & |
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| 109 | bc_radiation_l, & |
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| 110 | bc_radiation_n, & |
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| 111 | bc_radiation_r, & |
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| 112 | bc_radiation_s, & |
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[3241] | 113 | constant_flux_layer, dz, dz_max, dz_stretch_factor, & |
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[3065] | 114 | dz_stretch_factor_array, dz_stretch_level, dz_stretch_level_end,& |
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| 115 | dz_stretch_level_end_index, dz_stretch_level_start_index, & |
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[3241] | 116 | dz_stretch_level_start, ibc_uv_b, message_string, & |
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[3182] | 117 | momentum_advec, number_stretch_level_end, & |
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[3294] | 118 | number_stretch_level_start, ocean_mode, psolver, scalar_advec, & |
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[3241] | 119 | topography, use_surface_fluxes |
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[2021] | 120 | |
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[1320] | 121 | USE grid_variables, & |
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[2232] | 122 | ONLY: ddx, ddx2, ddy, ddy2, dx, dx2, dy, dy2, zu_s_inner, zw_w_inner |
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[1320] | 123 | |
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| 124 | USE indices, & |
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[4109] | 125 | ONLY: advc_flags_m, & |
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| 126 | advc_flags_s, & |
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| 127 | nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nz, & |
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[2232] | 128 | nzb, nzb_diff, nzb_diff_s_inner, nzb_diff_s_outer, & |
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| 129 | nzb_max, nzb_s_inner, nzb_s_outer, nzb_u_inner, & |
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[1845] | 130 | nzb_u_outer, nzb_v_inner, nzb_v_outer, nzb_w_inner, & |
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[4168] | 131 | nzb_w_outer, nzt, topo_top_ind, topo_min_level |
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[1320] | 132 | |
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| 133 | USE kinds |
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[2696] | 134 | |
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[1] | 135 | USE pegrid |
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| 136 | |
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[2696] | 137 | USE poismg_noopt_mod |
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| 138 | |
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[2232] | 139 | USE surface_mod, & |
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[4168] | 140 | ONLY: init_bc |
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[2232] | 141 | |
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[2365] | 142 | USE vertical_nesting_mod, & |
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| 143 | ONLY: vnested, vnest_init_grid |
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| 144 | |
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[1] | 145 | IMPLICIT NONE |
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| 146 | |
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[3182] | 147 | INTEGER(iwp) :: i !< index variable along x |
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| 148 | INTEGER(iwp) :: j !< index variable along y |
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| 149 | INTEGER(iwp) :: k !< index variable along z |
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| 150 | INTEGER(iwp) :: k_top !< topography top index on local PE |
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| 151 | INTEGER(iwp) :: n !< loop variable for stretching |
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| 152 | INTEGER(iwp) :: number_dz !< number of user-specified dz values |
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| 153 | INTEGER(iwp) :: nzb_local_max !< vertical grid index of maximum topography height |
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| 154 | INTEGER(iwp) :: nzb_local_min !< vertical grid index of minimum topography height |
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[2232] | 155 | |
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[3065] | 156 | INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: nzb_local !< index for topography top at cell-center |
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| 157 | INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: nzb_tmp !< dummy to calculate topography indices on u- and v-grid |
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[1] | 158 | |
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[2696] | 159 | INTEGER(iwp), DIMENSION(:,:,:), ALLOCATABLE :: topo !< input array for 3D topography and dummy array for setting "outer"-flags |
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[2232] | 160 | |
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[3065] | 161 | REAL(wp) :: dz_level_end !< distance between calculated height level for u/v-grid and user-specified end level for stretching |
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[1886] | 162 | REAL(wp) :: dz_stretched !< stretched vertical grid spacing |
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[3065] | 163 | |
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| 164 | REAL(wp), DIMENSION(:), ALLOCATABLE :: min_dz_stretch_level_end !< Array that contains all minimum heights where the stretching can end |
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[861] | 165 | |
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[1] | 166 | |
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| 167 | ! |
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[709] | 168 | !-- Calculation of horizontal array bounds including ghost layers |
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[667] | 169 | nxlg = nxl - nbgp |
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| 170 | nxrg = nxr + nbgp |
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| 171 | nysg = nys - nbgp |
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| 172 | nyng = nyn + nbgp |
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[709] | 173 | |
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[667] | 174 | ! |
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[1] | 175 | !-- Allocate grid arrays |
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[3857] | 176 | ALLOCATE( x(0:nx), xu(0:nx) ) |
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| 177 | DO i = 0, nx |
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| 178 | xu(i) = i * dx |
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| 179 | x(i) = i * dx + 0.5_wp * dx |
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| 180 | ENDDO |
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| 181 | |
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| 182 | ALLOCATE( y(0:ny), yv(0:ny) ) |
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| 183 | DO j = 0, ny |
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| 184 | yv(j) = j * dy |
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| 185 | y(j) = j * dy + 0.5_wp * dy |
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| 186 | ENDDO |
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| 187 | |
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| 188 | ! |
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| 189 | !-- Allocate grid arrays |
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[1353] | 190 | ALLOCATE( ddzu(1:nzt+1), ddzw(1:nzt+1), dd2zu(1:nzt), dzu(1:nzt+1), & |
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[2696] | 191 | dzw(1:nzt+1), zu(nzb:nzt+1), zw(nzb:nzt+1) ) |
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[1] | 192 | |
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| 193 | ! |
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| 194 | !-- Compute height of u-levels from constant grid length and dz stretch factors |
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[3065] | 195 | IF ( dz(1) == -1.0_wp ) THEN |
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[254] | 196 | message_string = 'missing dz' |
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| 197 | CALL message( 'init_grid', 'PA0200', 1, 2, 0, 6, 0 ) |
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[3065] | 198 | ELSEIF ( dz(1) <= 0.0_wp ) THEN |
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| 199 | WRITE( message_string, * ) 'dz=',dz(1),' <= 0.0' |
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[254] | 200 | CALL message( 'init_grid', 'PA0201', 1, 2, 0, 6, 0 ) |
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[1] | 201 | ENDIF |
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[94] | 202 | |
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[1] | 203 | ! |
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[3065] | 204 | !-- Initialize dz_stretch_level_start with the value of dz_stretch_level |
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| 205 | !-- if it was set by the user |
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| 206 | IF ( dz_stretch_level /= -9999999.9_wp ) THEN |
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| 207 | dz_stretch_level_start(1) = dz_stretch_level |
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| 208 | ENDIF |
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| 209 | |
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| 210 | ! |
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| 211 | !-- Determine number of dz values and stretching levels specified by the |
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| 212 | !-- user to allow right controlling of the stretching mechanism and to |
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[3139] | 213 | !-- perform error checks. The additional requirement that dz /= dz_max |
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| 214 | !-- for counting number of user-specified dz values is necessary. Otherwise |
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| 215 | !-- restarts would abort if the old stretching mechanism with dz_stretch_level |
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| 216 | !-- is used (Attention: The user is not allowed to specify a dz value equal |
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| 217 | !-- to the default of dz_max = 999.0). |
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| 218 | number_dz = COUNT( dz /= -1.0_wp .AND. dz /= dz_max) |
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[3065] | 219 | number_stretch_level_start = COUNT( dz_stretch_level_start /= & |
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| 220 | -9999999.9_wp ) |
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| 221 | number_stretch_level_end = COUNT( dz_stretch_level_end /= & |
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| 222 | 9999999.9_wp ) |
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| 223 | |
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| 224 | ! |
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| 225 | !-- The number of specified end levels +1 has to be the same than the number |
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| 226 | !-- of specified dz values |
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| 227 | IF ( number_dz /= number_stretch_level_end + 1 ) THEN |
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| 228 | WRITE( message_string, * ) 'The number of values for dz = ', & |
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| 229 | number_dz, 'has to be the same than& ', & |
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| 230 | 'the number of values for ', & |
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| 231 | 'dz_stretch_level_end + 1 = ', & |
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| 232 | number_stretch_level_end+1 |
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| 233 | CALL message( 'init_grid', 'PA0156', 1, 2, 0, 6, 0 ) |
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| 234 | ENDIF |
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| 235 | |
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| 236 | ! |
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| 237 | !-- The number of specified start levels has to be the same or one less than |
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| 238 | !-- the number of specified dz values |
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| 239 | IF ( number_dz /= number_stretch_level_start + 1 .AND. & |
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| 240 | number_dz /= number_stretch_level_start ) THEN |
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| 241 | WRITE( message_string, * ) 'The number of values for dz = ', & |
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| 242 | number_dz, 'has to be the same or one ', & |
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| 243 | 'more than& the number of values for ', & |
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| 244 | 'dz_stretch_level_start = ', & |
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| 245 | number_stretch_level_start |
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| 246 | CALL message( 'init_grid', 'PA0211', 1, 2, 0, 6, 0 ) |
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| 247 | ENDIF |
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| 248 | |
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| 249 | !-- The number of specified start levels has to be the same or one more than |
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| 250 | !-- the number of specified end levels |
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| 251 | IF ( number_stretch_level_start /= number_stretch_level_end + 1 .AND. & |
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| 252 | number_stretch_level_start /= number_stretch_level_end ) THEN |
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| 253 | WRITE( message_string, * ) 'The number of values for ', & |
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| 254 | 'dz_stretch_level_start = ', & |
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| 255 | dz_stretch_level_start, 'has to be the ',& |
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| 256 | 'same or one more than& the number of ', & |
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| 257 | 'values for dz_stretch_level_end = ', & |
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| 258 | number_stretch_level_end |
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| 259 | CALL message( 'init_grid', 'PA0216', 1, 2, 0, 6, 0 ) |
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| 260 | ENDIF |
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| 261 | |
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| 262 | ! |
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| 263 | !-- Initialize dz for the free atmosphere with the value of dz_max |
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| 264 | IF ( dz(number_stretch_level_start+1) == -1.0_wp .AND. & |
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| 265 | number_stretch_level_start /= 0 ) THEN |
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| 266 | dz(number_stretch_level_start+1) = dz_max |
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| 267 | ENDIF |
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| 268 | |
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| 269 | ! |
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| 270 | !-- Initialize the stretching factor if (infinitely) stretching in the free |
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| 271 | !-- atmosphere is desired (dz_stretch_level_end was not specified for the |
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| 272 | !-- free atmosphere) |
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| 273 | IF ( number_stretch_level_start == number_stretch_level_end + 1 ) THEN |
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| 274 | dz_stretch_factor_array(number_stretch_level_start) = & |
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| 275 | dz_stretch_factor |
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| 276 | ENDIF |
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| 277 | |
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| 278 | ! |
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| 279 | !-- Allocation of arrays for stretching |
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| 280 | ALLOCATE( min_dz_stretch_level_end(number_stretch_level_start) ) |
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[3066] | 281 | |
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[3065] | 282 | ! |
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[94] | 283 | !-- Define the vertical grid levels |
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[3294] | 284 | IF ( .NOT. ocean_mode ) THEN |
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[3065] | 285 | |
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[94] | 286 | ! |
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[3065] | 287 | !-- The stretching region has to be large enough to allow for a smooth |
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| 288 | !-- transition between two different grid spacings |
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| 289 | DO n = 1, number_stretch_level_start |
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| 290 | min_dz_stretch_level_end(n) = dz_stretch_level_start(n) + & |
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| 291 | 4 * MAX( dz(n),dz(n+1) ) |
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| 292 | ENDDO |
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| 293 | |
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[3066] | 294 | IF ( ANY( min_dz_stretch_level_end(1:number_stretch_level_start) > & |
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| 295 | dz_stretch_level_end(1:number_stretch_level_start) ) ) THEN |
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[3065] | 296 | message_string= 'Eeach dz_stretch_level_end has to be larger ' // & |
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| 297 | 'than its corresponding value for &' // & |
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| 298 | 'dz_stretch_level_start + 4*MAX(dz(n),dz(n+1)) '//& |
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| 299 | 'to allow for smooth grid stretching' |
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| 300 | CALL message( 'init_grid', 'PA0224', 1, 2, 0, 6, 0 ) |
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| 301 | ENDIF |
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| 302 | |
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| 303 | ! |
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| 304 | !-- Stretching must not be applied within the prandtl_layer |
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| 305 | !-- (first two grid points). For the default case dz_stretch_level_start |
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| 306 | !-- is negative. Therefore the absolut value is checked here. |
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| 307 | IF ( ANY( ABS( dz_stretch_level_start ) < dz(1) * 1.5_wp ) ) THEN |
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| 308 | WRITE( message_string, * ) 'Eeach dz_stretch_level_start has to be ',& |
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| 309 | 'larger than ', dz(1) * 1.5 |
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| 310 | CALL message( 'init_grid', 'PA0226', 1, 2, 0, 6, 0 ) |
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| 311 | ENDIF |
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| 312 | |
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| 313 | ! |
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| 314 | !-- The stretching has to start and end on a grid level. Therefore |
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| 315 | !-- user-specified values have to ''interpolate'' to the next lowest level |
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| 316 | IF ( number_stretch_level_start /= 0 ) THEN |
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| 317 | dz_stretch_level_start(1) = INT( (dz_stretch_level_start(1) - & |
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| 318 | dz(1)/2.0) / dz(1) ) & |
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| 319 | * dz(1) + dz(1)/2.0 |
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| 320 | ENDIF |
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| 321 | |
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| 322 | IF ( number_stretch_level_start > 1 ) THEN |
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| 323 | DO n = 2, number_stretch_level_start |
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| 324 | dz_stretch_level_start(n) = INT( dz_stretch_level_start(n) / & |
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| 325 | dz(n) ) * dz(n) |
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| 326 | ENDDO |
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| 327 | ENDIF |
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| 328 | |
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| 329 | IF ( number_stretch_level_end /= 0 ) THEN |
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| 330 | DO n = 1, number_stretch_level_end |
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| 331 | dz_stretch_level_end(n) = INT( dz_stretch_level_end(n) / & |
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| 332 | dz(n+1) ) * dz(n+1) |
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| 333 | ENDDO |
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| 334 | ENDIF |
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| 335 | |
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| 336 | ! |
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| 337 | !-- Determine stretching factor if necessary |
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| 338 | IF ( number_stretch_level_end >= 1 ) THEN |
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| 339 | CALL calculate_stretching_factor( number_stretch_level_end ) |
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| 340 | ENDIF |
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| 341 | |
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| 342 | ! |
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[94] | 343 | !-- Grid for atmosphere with surface at z=0 (k=0, w-grid). |
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[3065] | 344 | !-- First compute the u- and v-levels. In case of dirichlet bc for u and v |
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| 345 | !-- the first u/v- and w-level (k=0) are defined at same height (z=0). |
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[843] | 346 | !-- The second u-level (k=1) corresponds to the top of the |
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[94] | 347 | !-- Prandtl-layer. |
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[667] | 348 | IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN |
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[1353] | 349 | zu(0) = 0.0_wp |
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[667] | 350 | ELSE |
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[3065] | 351 | zu(0) = - dz(1) * 0.5_wp |
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[667] | 352 | ENDIF |
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[3065] | 353 | |
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| 354 | zu(1) = dz(1) * 0.5_wp |
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| 355 | |
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| 356 | ! |
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| 357 | !-- Determine u and v height levels considering the possibility of grid |
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| 358 | !-- stretching in several heights. |
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| 359 | n = 1 |
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| 360 | dz_stretch_level_start_index = nzt+1 |
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| 361 | dz_stretch_level_end_index = nzt+1 |
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| 362 | dz_stretched = dz(1) |
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[1] | 363 | |
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[3065] | 364 | !-- The default value of dz_stretch_level_start is negative, thus the first |
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| 365 | !-- condition is always true. Hence, the second condition is necessary. |
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[94] | 366 | DO k = 2, nzt+1 |
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[3065] | 367 | IF ( dz_stretch_level_start(n) <= zu(k-1) .AND. & |
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| 368 | dz_stretch_level_start(n) /= -9999999.9_wp ) THEN |
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| 369 | dz_stretched = dz_stretched * dz_stretch_factor_array(n) |
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| 370 | |
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| 371 | IF ( dz(n) > dz(n+1) ) THEN |
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| 372 | dz_stretched = MAX( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (higher) dz |
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| 373 | ELSE |
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| 374 | dz_stretched = MIN( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (lower) dz |
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| 375 | ENDIF |
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| 376 | |
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| 377 | IF ( dz_stretch_level_start_index(n) == nzt+1 ) & |
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| 378 | dz_stretch_level_start_index(n) = k-1 |
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| 379 | |
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[94] | 380 | ENDIF |
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[3065] | 381 | |
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[94] | 382 | zu(k) = zu(k-1) + dz_stretched |
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[3065] | 383 | |
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| 384 | ! |
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| 385 | !-- Make sure that the stretching ends exactly at dz_stretch_level_end |
---|
| 386 | dz_level_end = ABS( zu(k) - dz_stretch_level_end(n) ) |
---|
| 387 | |
---|
| 388 | IF ( dz_level_end < dz(n+1)/3.0 ) THEN |
---|
| 389 | zu(k) = dz_stretch_level_end(n) |
---|
| 390 | dz_stretched = dz(n+1) |
---|
| 391 | dz_stretch_level_end_index(n) = k |
---|
| 392 | n = n + 1 |
---|
| 393 | ENDIF |
---|
[94] | 394 | ENDDO |
---|
[1] | 395 | |
---|
| 396 | ! |
---|
[94] | 397 | !-- Compute the w-levels. They are always staggered half-way between the |
---|
[843] | 398 | !-- corresponding u-levels. In case of dirichlet bc for u and v at the |
---|
| 399 | !-- ground the first u- and w-level (k=0) are defined at same height (z=0). |
---|
| 400 | !-- The top w-level is extrapolated linearly. |
---|
[1353] | 401 | zw(0) = 0.0_wp |
---|
[94] | 402 | DO k = 1, nzt |
---|
[1353] | 403 | zw(k) = ( zu(k) + zu(k+1) ) * 0.5_wp |
---|
[94] | 404 | ENDDO |
---|
[1353] | 405 | zw(nzt+1) = zw(nzt) + 2.0_wp * ( zu(nzt+1) - zw(nzt) ) |
---|
[1] | 406 | |
---|
[94] | 407 | ELSE |
---|
[3065] | 408 | |
---|
[1] | 409 | ! |
---|
[3065] | 410 | !-- The stretching region has to be large enough to allow for a smooth |
---|
| 411 | !-- transition between two different grid spacings |
---|
| 412 | DO n = 1, number_stretch_level_start |
---|
| 413 | min_dz_stretch_level_end(n) = dz_stretch_level_start(n) - & |
---|
| 414 | 4 * MAX( dz(n),dz(n+1) ) |
---|
| 415 | ENDDO |
---|
| 416 | |
---|
[3066] | 417 | IF ( ANY( min_dz_stretch_level_end (1:number_stretch_level_start) < & |
---|
| 418 | dz_stretch_level_end(1:number_stretch_level_start) ) ) THEN |
---|
[3065] | 419 | message_string= 'Eeach dz_stretch_level_end has to be less ' // & |
---|
| 420 | 'than its corresponding value for &' // & |
---|
| 421 | 'dz_stretch_level_start - 4*MAX(dz(n),dz(n+1)) '//& |
---|
| 422 | 'to allow for smooth grid stretching' |
---|
| 423 | CALL message( 'init_grid', 'PA0224', 1, 2, 0, 6, 0 ) |
---|
| 424 | ENDIF |
---|
| 425 | |
---|
| 426 | ! |
---|
[3068] | 427 | !-- Stretching must not be applied close to the surface (last two grid |
---|
| 428 | !-- points). For the default case dz_stretch_level_start is negative. |
---|
| 429 | IF ( ANY( dz_stretch_level_start > - dz(1) * 1.5_wp ) ) THEN |
---|
[3065] | 430 | WRITE( message_string, * ) 'Eeach dz_stretch_level_start has to be ',& |
---|
| 431 | 'less than ', dz(1) * 1.5 |
---|
| 432 | CALL message( 'init_grid', 'PA0226', 1, 2, 0, 6, 0 ) |
---|
| 433 | ENDIF |
---|
| 434 | |
---|
| 435 | ! |
---|
| 436 | !-- The stretching has to start and end on a grid level. Therefore |
---|
| 437 | !-- user-specified values have to ''interpolate'' to the next highest level |
---|
| 438 | IF ( number_stretch_level_start /= 0 ) THEN |
---|
| 439 | dz_stretch_level_start(1) = INT( (dz_stretch_level_start(1) + & |
---|
| 440 | dz(1)/2.0) / dz(1) ) & |
---|
| 441 | * dz(1) - dz(1)/2.0 |
---|
| 442 | ENDIF |
---|
| 443 | |
---|
| 444 | IF ( number_stretch_level_start > 1 ) THEN |
---|
| 445 | DO n = 2, number_stretch_level_start |
---|
| 446 | dz_stretch_level_start(n) = INT( dz_stretch_level_start(n) / & |
---|
| 447 | dz(n) ) * dz(n) |
---|
| 448 | ENDDO |
---|
| 449 | ENDIF |
---|
| 450 | |
---|
| 451 | IF ( number_stretch_level_end /= 0 ) THEN |
---|
| 452 | DO n = 1, number_stretch_level_end |
---|
| 453 | dz_stretch_level_end(n) = INT( dz_stretch_level_end(n) / & |
---|
| 454 | dz(n+1) ) * dz(n+1) |
---|
| 455 | ENDDO |
---|
| 456 | ENDIF |
---|
| 457 | |
---|
| 458 | ! |
---|
| 459 | !-- Determine stretching factor if necessary |
---|
| 460 | IF ( number_stretch_level_end >= 1 ) THEN |
---|
| 461 | CALL calculate_stretching_factor( number_stretch_level_end ) |
---|
| 462 | ENDIF |
---|
| 463 | |
---|
| 464 | ! |
---|
[843] | 465 | !-- Grid for ocean with free water surface is at k=nzt (w-grid). |
---|
| 466 | !-- In case of neumann bc at the ground the first first u-level (k=0) lies |
---|
| 467 | !-- below the first w-level (k=0). In case of dirichlet bc the first u- and |
---|
| 468 | !-- w-level are defined at same height, but staggered from the second level. |
---|
| 469 | !-- The second u-level (k=1) corresponds to the top of the Prandtl-layer. |
---|
[3065] | 470 | !-- z values are negative starting from z=0 (surface) |
---|
| 471 | zu(nzt+1) = dz(1) * 0.5_wp |
---|
| 472 | zu(nzt) = - dz(1) * 0.5_wp |
---|
[94] | 473 | |
---|
[3065] | 474 | ! |
---|
| 475 | !-- Determine u and v height levels considering the possibility of grid |
---|
| 476 | !-- stretching in several heights. |
---|
| 477 | n = 1 |
---|
| 478 | dz_stretch_level_start_index = 0 |
---|
| 479 | dz_stretch_level_end_index = 0 |
---|
| 480 | dz_stretched = dz(1) |
---|
| 481 | |
---|
[94] | 482 | DO k = nzt-1, 0, -1 |
---|
[3065] | 483 | |
---|
| 484 | IF ( dz_stretch_level_start(n) >= zu(k+1) ) THEN |
---|
| 485 | dz_stretched = dz_stretched * dz_stretch_factor_array(n) |
---|
| 486 | |
---|
| 487 | IF ( dz(n) > dz(n+1) ) THEN |
---|
| 488 | dz_stretched = MAX( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (higher) dz |
---|
| 489 | ELSE |
---|
| 490 | dz_stretched = MIN( dz_stretched, dz(n+1) ) !Restrict dz_stretched to the user-specified (lower) dz |
---|
| 491 | ENDIF |
---|
| 492 | |
---|
| 493 | IF ( dz_stretch_level_start_index(n) == 0 ) & |
---|
| 494 | dz_stretch_level_start_index(n) = k+1 |
---|
| 495 | |
---|
| 496 | ENDIF |
---|
| 497 | |
---|
| 498 | zu(k) = zu(k+1) - dz_stretched |
---|
| 499 | |
---|
[1418] | 500 | ! |
---|
[3065] | 501 | !-- Make sure that the stretching ends exactly at dz_stretch_level_end |
---|
| 502 | dz_level_end = ABS( zu(k) - dz_stretch_level_end(n) ) |
---|
| 503 | |
---|
| 504 | IF ( dz_level_end < dz(n+1)/3.0 ) THEN |
---|
| 505 | zu(k) = dz_stretch_level_end(n) |
---|
| 506 | dz_stretched = dz(n+1) |
---|
| 507 | dz_stretch_level_end_index(n) = k |
---|
| 508 | n = n + 1 |
---|
[94] | 509 | ENDIF |
---|
| 510 | ENDDO |
---|
[3065] | 511 | |
---|
[94] | 512 | ! |
---|
| 513 | !-- Compute the w-levels. They are always staggered half-way between the |
---|
[843] | 514 | !-- corresponding u-levels, except in case of dirichlet bc for u and v |
---|
| 515 | !-- at the ground. In this case the first u- and w-level are defined at |
---|
| 516 | !-- same height. The top w-level (nzt+1) is not used but set for |
---|
| 517 | !-- consistency, since w and all scalar variables are defined up tp nzt+1. |
---|
[3065] | 518 | zw(nzt+1) = dz(1) |
---|
[1353] | 519 | zw(nzt) = 0.0_wp |
---|
[94] | 520 | DO k = 0, nzt |
---|
[1353] | 521 | zw(k) = ( zu(k) + zu(k+1) ) * 0.5_wp |
---|
[94] | 522 | ENDDO |
---|
| 523 | |
---|
[843] | 524 | ! |
---|
| 525 | !-- In case of dirichlet bc for u and v the first u- and w-level are defined |
---|
| 526 | !-- at same height. |
---|
| 527 | IF ( ibc_uv_b == 0 ) THEN |
---|
| 528 | zu(0) = zw(0) |
---|
| 529 | ENDIF |
---|
| 530 | |
---|
[94] | 531 | ENDIF |
---|
| 532 | |
---|
| 533 | ! |
---|
[1] | 534 | !-- Compute grid lengths. |
---|
| 535 | DO k = 1, nzt+1 |
---|
| 536 | dzu(k) = zu(k) - zu(k-1) |
---|
[1353] | 537 | ddzu(k) = 1.0_wp / dzu(k) |
---|
[1] | 538 | dzw(k) = zw(k) - zw(k-1) |
---|
[1353] | 539 | ddzw(k) = 1.0_wp / dzw(k) |
---|
[1] | 540 | ENDDO |
---|
| 541 | |
---|
| 542 | DO k = 1, nzt |
---|
[1353] | 543 | dd2zu(k) = 1.0_wp / ( dzu(k) + dzu(k+1) ) |
---|
[1] | 544 | ENDDO |
---|
[667] | 545 | |
---|
| 546 | ! |
---|
[709] | 547 | !-- The FFT- SOR-pressure solvers assume grid spacings of a staggered grid |
---|
| 548 | !-- everywhere. For the actual grid, the grid spacing at the lowest level |
---|
| 549 | !-- is only dz/2, but should be dz. Therefore, an additional array |
---|
| 550 | !-- containing with appropriate grid information is created for these |
---|
| 551 | !-- solvers. |
---|
[1575] | 552 | IF ( psolver(1:9) /= 'multigrid' ) THEN |
---|
[667] | 553 | ALLOCATE( ddzu_pres(1:nzt+1) ) |
---|
| 554 | ddzu_pres = ddzu |
---|
[864] | 555 | ddzu_pres(1) = ddzu_pres(2) ! change for lowest level |
---|
[1] | 556 | ENDIF |
---|
| 557 | |
---|
| 558 | ! |
---|
| 559 | !-- Compute the reciprocal values of the horizontal grid lengths. |
---|
[1353] | 560 | ddx = 1.0_wp / dx |
---|
| 561 | ddy = 1.0_wp / dy |
---|
[1] | 562 | dx2 = dx * dx |
---|
| 563 | dy2 = dy * dy |
---|
[1353] | 564 | ddx2 = 1.0_wp / dx2 |
---|
| 565 | ddy2 = 1.0_wp / dy2 |
---|
[1] | 566 | |
---|
| 567 | ! |
---|
[2696] | 568 | !-- Allocate 3D array to set topography |
---|
| 569 | ALLOCATE( topo(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
| 570 | topo = 0 |
---|
| 571 | ! |
---|
| 572 | !-- Initialize topography by generic topography or read from topography from file. |
---|
| 573 | CALL init_topo( topo ) |
---|
| 574 | ! |
---|
| 575 | !-- Set flags to mask topography on the grid. |
---|
| 576 | CALL set_topo_flags( topo ) |
---|
| 577 | ! |
---|
| 578 | !-- Calculate wall flag arrays for the multigrid method. |
---|
| 579 | !-- Please note, wall flags are only applied in the non-optimized version. |
---|
[4109] | 580 | IF ( psolver == 'multigrid_noopt' ) CALL poismg_noopt_init |
---|
[2696] | 581 | |
---|
| 582 | ! |
---|
| 583 | !-- Init flags for ws-scheme to degrade order of the numerics near walls, i.e. |
---|
[4109] | 584 | !-- to decrease the numerical stencil appropriately. The order of the scheme |
---|
| 585 | !-- is degraded near solid walls as well as near non-cyclic inflow and outflow |
---|
| 586 | !-- boundaries. Do this separately for momentum and scalars. |
---|
| 587 | IF ( momentum_advec == 'ws-scheme' ) THEN |
---|
| 588 | ALLOCATE( advc_flags_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
| 589 | CALL ws_init_flags_momentum |
---|
| 590 | ENDIF |
---|
| 591 | IF ( scalar_advec == 'ws-scheme' ) THEN |
---|
| 592 | ALLOCATE( advc_flags_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
| 593 | advc_flags_s = 0 |
---|
| 594 | |
---|
| 595 | CALL ws_init_flags_scalar( bc_dirichlet_l .OR. bc_radiation_l, & |
---|
| 596 | bc_dirichlet_n .OR. bc_radiation_n, & |
---|
| 597 | bc_dirichlet_r .OR. bc_radiation_r, & |
---|
| 598 | bc_dirichlet_s .OR. bc_radiation_s, & |
---|
| 599 | advc_flags_s ) |
---|
| 600 | ENDIF |
---|
[2696] | 601 | |
---|
| 602 | ! |
---|
| 603 | !-- Determine the maximum level of topography. It is used for |
---|
| 604 | !-- steering the degradation of order of the applied advection scheme, |
---|
| 605 | !-- as well in the lpm. |
---|
| 606 | k_top = 0 |
---|
| 607 | DO i = nxl, nxr |
---|
| 608 | DO j = nys, nyn |
---|
| 609 | DO k = nzb, nzt + 1 |
---|
[4109] | 610 | k_top = MAX( k_top, MERGE( k, 0, .NOT. BTEST( topo(k,j,i), 0 ) ) ) |
---|
[2696] | 611 | ENDDO |
---|
| 612 | ENDDO |
---|
[1] | 613 | ENDDO |
---|
[2696] | 614 | #if defined( __parallel ) |
---|
| 615 | CALL MPI_ALLREDUCE( k_top + 1, nzb_max, 1, MPI_INTEGER, & !is +1 really necessary here? |
---|
| 616 | MPI_MAX, comm2d, ierr ) |
---|
| 617 | #else |
---|
| 618 | nzb_max = k_top + 1 |
---|
| 619 | #endif |
---|
| 620 | ! |
---|
[3661] | 621 | !-- If topography extents up to the model top, limit nzb_max to nzt. |
---|
[3182] | 622 | nzb_max = MIN( nzb_max, nzt ) |
---|
[1] | 623 | ! |
---|
[2968] | 624 | !-- Determine minimum index of topography. Usually, this will be nzb. In case |
---|
| 625 | !-- there is elevated topography, however, the lowest topography will be higher. |
---|
| 626 | !-- This index is e.g. used to calculate mean first-grid point atmosphere |
---|
| 627 | !-- temperature, surface pressure and density, etc. . |
---|
| 628 | topo_min_level = 0 |
---|
| 629 | #if defined( __parallel ) |
---|
[4168] | 630 | CALL MPI_ALLREDUCE( MINVAL( topo_top_ind(nys:nyn,nxl:nxr,0) ), & |
---|
[2968] | 631 | topo_min_level, 1, MPI_INTEGER, MPI_MIN, comm2d, ierr ) |
---|
| 632 | #else |
---|
[4168] | 633 | topo_min_level = MINVAL( topo_top_ind(nys:nyn,nxl:nxr,0) ) |
---|
[2968] | 634 | #endif |
---|
| 635 | ! |
---|
[2696] | 636 | !-- Initialize boundary conditions via surface type |
---|
| 637 | CALL init_bc |
---|
[3182] | 638 | |
---|
[2696] | 639 | ! |
---|
| 640 | !-- Allocate and set topography height arrays required for data output |
---|
| 641 | IF ( TRIM( topography ) /= 'flat' ) THEN |
---|
| 642 | ! |
---|
| 643 | !-- Allocate and set the arrays containing the topography height |
---|
| 644 | IF ( nxr == nx .AND. nyn /= ny ) THEN |
---|
| 645 | ALLOCATE( zu_s_inner(nxl:nxr+1,nys:nyn), & |
---|
| 646 | zw_w_inner(nxl:nxr+1,nys:nyn) ) |
---|
| 647 | ELSEIF ( nxr /= nx .AND. nyn == ny ) THEN |
---|
| 648 | ALLOCATE( zu_s_inner(nxl:nxr,nys:nyn+1), & |
---|
| 649 | zw_w_inner(nxl:nxr,nys:nyn+1) ) |
---|
| 650 | ELSEIF ( nxr == nx .AND. nyn == ny ) THEN |
---|
| 651 | ALLOCATE( zu_s_inner(nxl:nxr+1,nys:nyn+1), & |
---|
| 652 | zw_w_inner(nxl:nxr+1,nys:nyn+1) ) |
---|
| 653 | ELSE |
---|
| 654 | ALLOCATE( zu_s_inner(nxl:nxr,nys:nyn), & |
---|
| 655 | zw_w_inner(nxl:nxr,nys:nyn) ) |
---|
| 656 | ENDIF |
---|
| 657 | |
---|
| 658 | zu_s_inner = 0.0_wp |
---|
| 659 | zw_w_inner = 0.0_wp |
---|
| 660 | ! |
---|
| 661 | !-- Determine local topography height on scalar and w-grid. Note, setting |
---|
| 662 | !-- lateral boundary values is not necessary, realized via wall_flags_0 |
---|
| 663 | !-- array. Further, please note that loop bounds are different from |
---|
| 664 | !-- nxl to nxr and nys to nyn on south and right model boundary, hence, |
---|
| 665 | !-- use intrinsic lbound and ubound functions to infer array bounds. |
---|
| 666 | DO i = LBOUND(zu_s_inner, 1), UBOUND(zu_s_inner, 1) |
---|
| 667 | DO j = LBOUND(zu_s_inner, 2), UBOUND(zu_s_inner, 2) |
---|
| 668 | ! |
---|
| 669 | !-- Topography height on scalar grid. Therefore, determine index of |
---|
| 670 | !-- upward-facing surface element on scalar grid. |
---|
[4168] | 671 | zu_s_inner(i,j) = zu(topo_top_ind(j,i,0)) |
---|
[2696] | 672 | ! |
---|
| 673 | !-- Topography height on w grid. Therefore, determine index of |
---|
| 674 | !-- upward-facing surface element on w grid. |
---|
[4168] | 675 | zw_w_inner(i,j) = zw(topo_top_ind(j,i,3)) |
---|
[2696] | 676 | ENDDO |
---|
| 677 | ENDDO |
---|
| 678 | ENDIF |
---|
| 679 | |
---|
| 680 | ! |
---|
| 681 | !-- In the following, calculate 2D index arrays. Note, these will be removed |
---|
| 682 | !-- soon. |
---|
[1] | 683 | !-- Allocate outer and inner index arrays for topography and set |
---|
[2232] | 684 | !-- defaults. |
---|
[2696] | 685 | ALLOCATE( nzb_s_inner(nysg:nyng,nxlg:nxrg), & |
---|
| 686 | nzb_s_outer(nysg:nyng,nxlg:nxrg), & |
---|
| 687 | nzb_u_inner(nysg:nyng,nxlg:nxrg), & |
---|
| 688 | nzb_u_outer(nysg:nyng,nxlg:nxrg), & |
---|
| 689 | nzb_v_inner(nysg:nyng,nxlg:nxrg), & |
---|
| 690 | nzb_v_outer(nysg:nyng,nxlg:nxrg), & |
---|
| 691 | nzb_w_inner(nysg:nyng,nxlg:nxrg), & |
---|
| 692 | nzb_w_outer(nysg:nyng,nxlg:nxrg), & |
---|
| 693 | nzb_diff_s_inner(nysg:nyng,nxlg:nxrg), & |
---|
| 694 | nzb_diff_s_outer(nysg:nyng,nxlg:nxrg), & |
---|
| 695 | nzb_local(nysg:nyng,nxlg:nxrg), & |
---|
| 696 | nzb_tmp(nysg:nyng,nxlg:nxrg) ) |
---|
| 697 | ! |
---|
| 698 | !-- Initialize 2D-index arrays. Note, these will be removed soon! |
---|
[4168] | 699 | nzb_local(nys:nyn,nxl:nxr) = topo_top_ind(nys:nyn,nxl:nxr,0) |
---|
[2696] | 700 | CALL exchange_horiz_2d_int( nzb_local, nys, nyn, nxl, nxr, nbgp ) |
---|
[2968] | 701 | ! |
---|
| 702 | !-- Check topography for consistency with model domain. Therefore, use |
---|
| 703 | !-- maximum and minium topography-top indices. Note, minimum topography top |
---|
| 704 | !-- index is already calculated. |
---|
[2696] | 705 | IF ( TRIM( topography ) /= 'flat' ) THEN |
---|
| 706 | #if defined( __parallel ) |
---|
[4168] | 707 | CALL MPI_ALLREDUCE( MAXVAL( topo_top_ind(nys:nyn,nxl:nxr,0) ), & |
---|
[3182] | 708 | nzb_local_max, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr ) |
---|
[2696] | 709 | #else |
---|
[4168] | 710 | nzb_local_max = MAXVAL( topo_top_ind(nys:nyn,nxl:nxr,0) ) |
---|
[2696] | 711 | #endif |
---|
[2968] | 712 | nzb_local_min = topo_min_level |
---|
[2696] | 713 | ! |
---|
| 714 | !-- Consistency checks |
---|
| 715 | IF ( nzb_local_min < 0 .OR. nzb_local_max > nz + 1 ) THEN |
---|
| 716 | WRITE( message_string, * ) 'nzb_local values are outside the', & |
---|
[3045] | 717 | ' model domain', & |
---|
[3046] | 718 | '&MINVAL( nzb_local ) = ', nzb_local_min, & |
---|
| 719 | '&MAXVAL( nzb_local ) = ', nzb_local_max |
---|
[2696] | 720 | CALL message( 'init_grid', 'PA0210', 1, 2, 0, 6, 0 ) |
---|
| 721 | ENDIF |
---|
| 722 | ENDIF |
---|
[1] | 723 | |
---|
| 724 | nzb_s_inner = nzb; nzb_s_outer = nzb |
---|
| 725 | nzb_u_inner = nzb; nzb_u_outer = nzb |
---|
| 726 | nzb_v_inner = nzb; nzb_v_outer = nzb |
---|
| 727 | nzb_w_inner = nzb; nzb_w_outer = nzb |
---|
| 728 | |
---|
| 729 | ! |
---|
[19] | 730 | !-- Define vertical gridpoint from (or to) which on the usual finite difference |
---|
[1] | 731 | !-- form (which does not use surface fluxes) is applied |
---|
[1691] | 732 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
[1] | 733 | nzb_diff = nzb + 2 |
---|
| 734 | ELSE |
---|
| 735 | nzb_diff = nzb + 1 |
---|
| 736 | ENDIF |
---|
| 737 | |
---|
| 738 | nzb_diff_s_inner = nzb_diff; nzb_diff_s_outer = nzb_diff |
---|
[2696] | 739 | ! |
---|
| 740 | !-- Set Neumann conditions for topography. Will be removed soon. |
---|
| 741 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
| 742 | IF ( nys == 0 ) THEN |
---|
[2927] | 743 | DO i = 1, nbgp |
---|
| 744 | nzb_local(nys-i,:) = nzb_local(nys,:) |
---|
| 745 | ENDDO |
---|
[2696] | 746 | ELSEIF ( nyn == ny ) THEN |
---|
[2927] | 747 | DO i = 1, nbgp |
---|
| 748 | nzb_local(ny+i,:) = nzb_local(ny,:) |
---|
| 749 | ENDDO |
---|
[2696] | 750 | ENDIF |
---|
| 751 | ENDIF |
---|
[1] | 752 | |
---|
[2696] | 753 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
| 754 | IF ( nxl == 0 ) THEN |
---|
[2927] | 755 | DO i = 1, nbgp |
---|
| 756 | nzb_local(:,nxl-i) = nzb_local(:,nxl) |
---|
| 757 | ENDDO |
---|
[2696] | 758 | ELSEIF ( nxr == nx ) THEN |
---|
[2927] | 759 | DO i = 1, nbgp |
---|
| 760 | nzb_local(:,nx+i) = nzb_local(:,nx) |
---|
| 761 | ENDDO |
---|
[2696] | 762 | ENDIF |
---|
| 763 | ENDIF |
---|
[1] | 764 | ! |
---|
[2696] | 765 | !-- Initialization of 2D index arrays, will be removed soon! |
---|
| 766 | !-- Initialize nzb_s_inner and nzb_w_inner |
---|
| 767 | nzb_s_inner = nzb_local |
---|
| 768 | nzb_w_inner = nzb_local |
---|
| 769 | |
---|
| 770 | ! |
---|
| 771 | !-- Initialize remaining index arrays: |
---|
| 772 | !-- first pre-initialize them with nzb_s_inner... |
---|
| 773 | nzb_u_inner = nzb_s_inner |
---|
| 774 | nzb_u_outer = nzb_s_inner |
---|
| 775 | nzb_v_inner = nzb_s_inner |
---|
| 776 | nzb_v_outer = nzb_s_inner |
---|
| 777 | nzb_w_outer = nzb_s_inner |
---|
| 778 | nzb_s_outer = nzb_s_inner |
---|
| 779 | |
---|
| 780 | ! |
---|
| 781 | !-- nzb_s_outer: |
---|
| 782 | !-- extend nzb_local east-/westwards first, then north-/southwards |
---|
| 783 | nzb_tmp = nzb_local |
---|
| 784 | DO j = nys, nyn |
---|
| 785 | DO i = nxl, nxr |
---|
| 786 | nzb_tmp(j,i) = MAX( nzb_local(j,i-1), nzb_local(j,i), & |
---|
| 787 | nzb_local(j,i+1) ) |
---|
| 788 | ENDDO |
---|
| 789 | ENDDO |
---|
| 790 | |
---|
| 791 | CALL exchange_horiz_2d_int( nzb_tmp, nys, nyn, nxl, nxr, nbgp ) |
---|
| 792 | |
---|
| 793 | DO i = nxl, nxr |
---|
| 794 | DO j = nys, nyn |
---|
| 795 | nzb_s_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i), & |
---|
| 796 | nzb_tmp(j+1,i) ) |
---|
| 797 | ENDDO |
---|
| 798 | ! |
---|
| 799 | !-- non-cyclic boundary conditions (overwritten by call of |
---|
| 800 | !-- exchange_horiz_2d_int below in case of cyclic boundary conditions) |
---|
| 801 | IF ( nys == 0 ) THEN |
---|
| 802 | j = -1 |
---|
| 803 | nzb_s_outer(j,i) = MAX( nzb_tmp(j+1,i), nzb_tmp(j,i) ) |
---|
| 804 | ENDIF |
---|
| 805 | IF ( nyn == ny ) THEN |
---|
| 806 | j = ny + 1 |
---|
| 807 | nzb_s_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i) ) |
---|
| 808 | ENDIF |
---|
| 809 | ENDDO |
---|
| 810 | ! |
---|
| 811 | !-- nzb_w_outer: |
---|
| 812 | !-- identical to nzb_s_outer |
---|
| 813 | nzb_w_outer = nzb_s_outer |
---|
| 814 | ! |
---|
| 815 | !-- nzb_u_inner: |
---|
| 816 | !-- extend nzb_local rightwards only |
---|
| 817 | nzb_tmp = nzb_local |
---|
| 818 | DO j = nys, nyn |
---|
| 819 | DO i = nxl, nxr |
---|
| 820 | nzb_tmp(j,i) = MAX( nzb_local(j,i-1), nzb_local(j,i) ) |
---|
| 821 | ENDDO |
---|
| 822 | ENDDO |
---|
| 823 | |
---|
| 824 | CALL exchange_horiz_2d_int( nzb_tmp, nys, nyn, nxl, nxr, nbgp ) |
---|
| 825 | |
---|
| 826 | nzb_u_inner = nzb_tmp |
---|
| 827 | ! |
---|
| 828 | !-- nzb_u_outer: |
---|
| 829 | !-- extend current nzb_tmp (nzb_u_inner) north-/southwards |
---|
| 830 | DO i = nxl, nxr |
---|
| 831 | DO j = nys, nyn |
---|
| 832 | nzb_u_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i), & |
---|
| 833 | nzb_tmp(j+1,i) ) |
---|
| 834 | ENDDO |
---|
| 835 | ! |
---|
| 836 | !-- non-cyclic boundary conditions (overwritten by call of |
---|
| 837 | !-- exchange_horiz_2d_int below in case of cyclic boundary conditions) |
---|
| 838 | IF ( nys == 0 ) THEN |
---|
| 839 | j = -1 |
---|
| 840 | nzb_u_outer(j,i) = MAX( nzb_tmp(j+1,i), nzb_tmp(j,i) ) |
---|
| 841 | ENDIF |
---|
| 842 | IF ( nyn == ny ) THEN |
---|
| 843 | j = ny + 1 |
---|
| 844 | nzb_u_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i) ) |
---|
| 845 | ENDIF |
---|
| 846 | ENDDO |
---|
| 847 | |
---|
| 848 | ! |
---|
| 849 | !-- nzb_v_inner: |
---|
| 850 | !-- extend nzb_local northwards only |
---|
| 851 | nzb_tmp = nzb_local |
---|
| 852 | DO i = nxl, nxr |
---|
| 853 | DO j = nys, nyn |
---|
| 854 | nzb_tmp(j,i) = MAX( nzb_local(j-1,i), nzb_local(j,i) ) |
---|
| 855 | ENDDO |
---|
| 856 | ENDDO |
---|
| 857 | |
---|
| 858 | CALL exchange_horiz_2d_int( nzb_tmp, nys, nyn, nxl, nxr, nbgp ) |
---|
| 859 | nzb_v_inner = nzb_tmp |
---|
| 860 | |
---|
| 861 | ! |
---|
| 862 | !-- nzb_v_outer: |
---|
| 863 | !-- extend current nzb_tmp (nzb_v_inner) right-/leftwards |
---|
| 864 | DO j = nys, nyn |
---|
| 865 | DO i = nxl, nxr |
---|
| 866 | nzb_v_outer(j,i) = MAX( nzb_tmp(j,i-1), nzb_tmp(j,i), & |
---|
| 867 | nzb_tmp(j,i+1) ) |
---|
| 868 | ENDDO |
---|
| 869 | ! |
---|
| 870 | !-- non-cyclic boundary conditions (overwritten by call of |
---|
| 871 | !-- exchange_horiz_2d_int below in case of cyclic boundary conditions) |
---|
| 872 | IF ( nxl == 0 ) THEN |
---|
| 873 | i = -1 |
---|
| 874 | nzb_v_outer(j,i) = MAX( nzb_tmp(j,i+1), nzb_tmp(j,i) ) |
---|
| 875 | ENDIF |
---|
| 876 | IF ( nxr == nx ) THEN |
---|
| 877 | i = nx + 1 |
---|
| 878 | nzb_v_outer(j,i) = MAX( nzb_tmp(j,i-1), nzb_tmp(j,i) ) |
---|
| 879 | ENDIF |
---|
| 880 | ENDDO |
---|
| 881 | |
---|
| 882 | ! |
---|
| 883 | !-- Exchange of lateral boundary values (parallel computers) and cyclic |
---|
| 884 | !-- boundary conditions, if applicable. |
---|
| 885 | !-- Since nzb_s_inner and nzb_w_inner are derived directly from nzb_local |
---|
| 886 | !-- they do not require exchange and are not included here. |
---|
| 887 | CALL exchange_horiz_2d_int( nzb_u_inner, nys, nyn, nxl, nxr, nbgp ) |
---|
| 888 | CALL exchange_horiz_2d_int( nzb_u_outer, nys, nyn, nxl, nxr, nbgp ) |
---|
| 889 | CALL exchange_horiz_2d_int( nzb_v_inner, nys, nyn, nxl, nxr, nbgp ) |
---|
| 890 | CALL exchange_horiz_2d_int( nzb_v_outer, nys, nyn, nxl, nxr, nbgp ) |
---|
| 891 | CALL exchange_horiz_2d_int( nzb_w_outer, nys, nyn, nxl, nxr, nbgp ) |
---|
| 892 | CALL exchange_horiz_2d_int( nzb_s_outer, nys, nyn, nxl, nxr, nbgp ) |
---|
| 893 | |
---|
| 894 | ! |
---|
| 895 | !-- Set the individual index arrays which define the k index from which on |
---|
| 896 | !-- the usual finite difference form (which does not use surface fluxes) is |
---|
| 897 | !-- applied |
---|
| 898 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
| 899 | nzb_diff_s_inner = nzb_s_inner + 2 |
---|
| 900 | nzb_diff_s_outer = nzb_s_outer + 2 |
---|
| 901 | ELSE |
---|
| 902 | nzb_diff_s_inner = nzb_s_inner + 1 |
---|
| 903 | nzb_diff_s_outer = nzb_s_outer + 1 |
---|
| 904 | ENDIF |
---|
| 905 | ! |
---|
| 906 | !-- Vertical nesting: communicate vertical grid level arrays between fine and |
---|
| 907 | !-- coarse grid |
---|
| 908 | IF ( vnested ) CALL vnest_init_grid |
---|
| 909 | |
---|
| 910 | END SUBROUTINE init_grid |
---|
| 911 | |
---|
[3065] | 912 | |
---|
[2696] | 913 | ! Description: |
---|
| 914 | ! -----------------------------------------------------------------------------! |
---|
[3065] | 915 | !> Calculation of the stretching factor through an iterative method. Ideas were |
---|
| 916 | !> taken from the paper "Regional stretched grid generation and its application |
---|
| 917 | !> to the NCAR RegCM (1999)". Normally, no analytic solution exists because the |
---|
| 918 | !> system of equations has two variables (r,l) but four requirements |
---|
| 919 | !> (l=integer, r=[0,88;1,2], Eq(6), Eq(5) starting from index j=1) which |
---|
| 920 | !> results into an overdetermined system. |
---|
| 921 | !------------------------------------------------------------------------------! |
---|
| 922 | SUBROUTINE calculate_stretching_factor( number_end ) |
---|
| 923 | |
---|
| 924 | USE control_parameters, & |
---|
[3241] | 925 | ONLY: dz, dz_stretch_factor_array, & |
---|
[3065] | 926 | dz_stretch_level_end, dz_stretch_level_start, message_string |
---|
| 927 | |
---|
| 928 | USE kinds |
---|
| 929 | |
---|
| 930 | IMPLICIT NONE |
---|
| 931 | |
---|
| 932 | INTEGER(iwp) :: iterations !< number of iterations until stretch_factor_lower/upper_limit is reached |
---|
| 933 | INTEGER(iwp) :: l_rounded !< after l_rounded grid levels dz(n) is strechted to dz(n+1) with stretch_factor_2 |
---|
| 934 | INTEGER(iwp) :: n !< loop variable for stretching |
---|
| 935 | |
---|
| 936 | INTEGER(iwp), INTENT(IN) :: number_end !< number of user-specified end levels for stretching |
---|
| 937 | |
---|
| 938 | REAL(wp) :: delta_l !< absolute difference between l and l_rounded |
---|
| 939 | REAL(wp) :: delta_stretch_factor !< absolute difference between stretch_factor_1 and stretch_factor_2 |
---|
| 940 | REAL(wp) :: delta_total_new !< sum of delta_l and delta_stretch_factor for the next iteration (should be as small as possible) |
---|
| 941 | REAL(wp) :: delta_total_old !< sum of delta_l and delta_stretch_factor for the last iteration |
---|
| 942 | REAL(wp) :: distance !< distance between dz_stretch_level_start and dz_stretch_level_end (stretching region) |
---|
| 943 | REAL(wp) :: l !< value that fulfil Eq. (5) in the paper mentioned above together with stretch_factor_1 exactly |
---|
| 944 | REAL(wp) :: numerator !< numerator of the quotient |
---|
| 945 | REAL(wp) :: stretch_factor_1 !< stretching factor that fulfil Eq. (5) togehter with l exactly |
---|
| 946 | REAL(wp) :: stretch_factor_2 !< stretching factor that fulfil Eq. (6) togehter with l_rounded exactly |
---|
| 947 | |
---|
[3068] | 948 | REAL(wp) :: dz_stretch_factor_array_2(9) = 1.08_wp !< Array that contains all stretch_factor_2 that belongs to stretch_factor_1 |
---|
| 949 | |
---|
[3065] | 950 | REAL(wp), PARAMETER :: stretch_factor_interval = 1.0E-06 !< interval for sampling possible stretching factors |
---|
| 951 | REAL(wp), PARAMETER :: stretch_factor_lower_limit = 0.88 !< lowest possible stretching factor |
---|
| 952 | REAL(wp), PARAMETER :: stretch_factor_upper_limit = 1.12 !< highest possible stretching factor |
---|
| 953 | |
---|
| 954 | |
---|
[3068] | 955 | l = 0 |
---|
| 956 | DO n = 1, number_end |
---|
| 957 | |
---|
| 958 | iterations = 1 |
---|
| 959 | stretch_factor_1 = 1.0 |
---|
| 960 | stretch_factor_2 = 1.0 |
---|
| 961 | delta_total_old = 1.0 |
---|
[3065] | 962 | |
---|
[3068] | 963 | IF ( dz(n) > dz(n+1) ) THEN |
---|
| 964 | DO WHILE ( stretch_factor_1 >= stretch_factor_lower_limit ) |
---|
| 965 | |
---|
| 966 | stretch_factor_1 = 1.0 - iterations * stretch_factor_interval |
---|
| 967 | distance = ABS( dz_stretch_level_end(n) - & |
---|
| 968 | dz_stretch_level_start(n) ) |
---|
| 969 | numerator = distance*stretch_factor_1/dz(n) + & |
---|
| 970 | stretch_factor_1 - distance/dz(n) |
---|
| 971 | |
---|
| 972 | IF ( numerator > 0.0 ) THEN |
---|
| 973 | l = LOG( numerator ) / LOG( stretch_factor_1 ) - 1.0 |
---|
| 974 | l_rounded = NINT( l ) |
---|
| 975 | delta_l = ABS( l_rounded - l ) / l |
---|
| 976 | ENDIF |
---|
| 977 | |
---|
| 978 | stretch_factor_2 = EXP( LOG( dz(n+1)/dz(n) ) / (l_rounded) ) |
---|
| 979 | |
---|
| 980 | delta_stretch_factor = ABS( stretch_factor_1 - & |
---|
| 981 | stretch_factor_2 ) / & |
---|
| 982 | stretch_factor_2 |
---|
| 983 | |
---|
| 984 | delta_total_new = delta_l + delta_stretch_factor |
---|
[3065] | 985 | |
---|
| 986 | ! |
---|
| 987 | !-- stretch_factor_1 is taken to guarantee that the stretching |
---|
| 988 | !-- procedure ends as close as possible to dz_stretch_level_end. |
---|
| 989 | !-- stretch_factor_2 would guarantee that the stretched dz(n) is |
---|
| 990 | !-- equal to dz(n+1) after l_rounded grid levels. |
---|
[3068] | 991 | IF (delta_total_new < delta_total_old) THEN |
---|
| 992 | dz_stretch_factor_array(n) = stretch_factor_1 |
---|
| 993 | dz_stretch_factor_array_2(n) = stretch_factor_2 |
---|
| 994 | delta_total_old = delta_total_new |
---|
| 995 | ENDIF |
---|
| 996 | |
---|
| 997 | iterations = iterations + 1 |
---|
| 998 | |
---|
| 999 | ENDDO |
---|
| 1000 | |
---|
| 1001 | ELSEIF ( dz(n) < dz(n+1) ) THEN |
---|
| 1002 | DO WHILE ( stretch_factor_1 <= stretch_factor_upper_limit ) |
---|
| 1003 | |
---|
| 1004 | stretch_factor_1 = 1.0 + iterations * stretch_factor_interval |
---|
| 1005 | distance = ABS( dz_stretch_level_end(n) - & |
---|
| 1006 | dz_stretch_level_start(n) ) |
---|
| 1007 | numerator = distance*stretch_factor_1/dz(n) + & |
---|
| 1008 | stretch_factor_1 - distance/dz(n) |
---|
| 1009 | |
---|
| 1010 | l = LOG( numerator ) / LOG( stretch_factor_1 ) - 1.0 |
---|
| 1011 | l_rounded = NINT( l ) |
---|
| 1012 | delta_l = ABS( l_rounded - l ) / l |
---|
| 1013 | |
---|
| 1014 | stretch_factor_2 = EXP( LOG( dz(n+1)/dz(n) ) / (l_rounded) ) |
---|
[3065] | 1015 | |
---|
[3068] | 1016 | delta_stretch_factor = ABS( stretch_factor_1 - & |
---|
| 1017 | stretch_factor_2 ) / & |
---|
| 1018 | stretch_factor_2 |
---|
| 1019 | |
---|
| 1020 | delta_total_new = delta_l + delta_stretch_factor |
---|
| 1021 | |
---|
[3065] | 1022 | ! |
---|
| 1023 | !-- stretch_factor_1 is taken to guarantee that the stretching |
---|
| 1024 | !-- procedure ends as close as possible to dz_stretch_level_end. |
---|
| 1025 | !-- stretch_factor_2 would guarantee that the stretched dz(n) is |
---|
| 1026 | !-- equal to dz(n+1) after l_rounded grid levels. |
---|
[3068] | 1027 | IF (delta_total_new < delta_total_old) THEN |
---|
| 1028 | dz_stretch_factor_array(n) = stretch_factor_1 |
---|
| 1029 | dz_stretch_factor_array_2(n) = stretch_factor_2 |
---|
| 1030 | delta_total_old = delta_total_new |
---|
| 1031 | ENDIF |
---|
[3065] | 1032 | |
---|
[3068] | 1033 | iterations = iterations + 1 |
---|
| 1034 | ENDDO |
---|
| 1035 | |
---|
| 1036 | ELSE |
---|
| 1037 | message_string= 'Two adjacent values of dz must be different' |
---|
| 1038 | CALL message( 'init_grid', 'PA0228', 1, 2, 0, 6, 0 ) |
---|
| 1039 | |
---|
| 1040 | ENDIF |
---|
| 1041 | |
---|
| 1042 | ! |
---|
| 1043 | !-- Check if also the second stretching factor fits into the allowed |
---|
| 1044 | !-- interval. If not, print a warning for the user. |
---|
| 1045 | IF ( dz_stretch_factor_array_2(n) < stretch_factor_lower_limit .OR. & |
---|
| 1046 | dz_stretch_factor_array_2(n) > stretch_factor_upper_limit ) THEN |
---|
| 1047 | WRITE( message_string, * ) 'stretch_factor_2 = ', & |
---|
| 1048 | dz_stretch_factor_array_2(n), ' which is',& |
---|
| 1049 | ' responsible for exactly reaching& dz =',& |
---|
| 1050 | dz(n+1), 'after a specific amount of', & |
---|
| 1051 | ' grid levels& exceeds the upper', & |
---|
| 1052 | ' limit =', stretch_factor_upper_limit, & |
---|
| 1053 | ' &or lower limit = ', & |
---|
| 1054 | stretch_factor_lower_limit |
---|
| 1055 | CALL message( 'init_grid', 'PA0499', 0, 1, 0, 6, 0 ) |
---|
| 1056 | |
---|
| 1057 | ENDIF |
---|
| 1058 | ENDDO |
---|
[3065] | 1059 | |
---|
| 1060 | END SUBROUTINE calculate_stretching_factor |
---|
| 1061 | |
---|
| 1062 | |
---|
| 1063 | ! Description: |
---|
| 1064 | ! -----------------------------------------------------------------------------! |
---|
[2696] | 1065 | !> Set temporary topography flags and reference buildings on top of underlying |
---|
| 1066 | !> orography. |
---|
| 1067 | !------------------------------------------------------------------------------! |
---|
| 1068 | SUBROUTINE process_topography( topo_3d ) |
---|
| 1069 | |
---|
| 1070 | USE arrays_3d, & |
---|
[2747] | 1071 | ONLY: zu, zw |
---|
[2696] | 1072 | |
---|
| 1073 | USE control_parameters, & |
---|
[3294] | 1074 | ONLY: bc_lr_cyc, bc_ns_cyc, message_string, ocean_mode |
---|
[2696] | 1075 | |
---|
| 1076 | USE indices, & |
---|
| 1077 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nzb, & |
---|
| 1078 | nzt |
---|
| 1079 | |
---|
| 1080 | USE netcdf_data_input_mod, & |
---|
[3115] | 1081 | ONLY: buildings_f, building_id_f, building_type_f, input_pids_static, & |
---|
[2696] | 1082 | terrain_height_f |
---|
| 1083 | |
---|
| 1084 | USE kinds |
---|
| 1085 | |
---|
| 1086 | USE pegrid |
---|
| 1087 | |
---|
| 1088 | IMPLICIT NONE |
---|
| 1089 | |
---|
[2867] | 1090 | INTEGER(iwp) :: i !< running index along x-direction |
---|
| 1091 | INTEGER(iwp) :: j !< running index along y-direction |
---|
| 1092 | INTEGER(iwp) :: k !< running index along z-direction with respect to numeric grid |
---|
| 1093 | INTEGER(iwp) :: k2 !< running index along z-direction with respect to netcdf grid |
---|
| 1094 | INTEGER(iwp) :: nr !< index variable indication maximum terrain height for respective building ID |
---|
| 1095 | INTEGER(iwp) :: num_build !< counter for number of buildings |
---|
| 1096 | INTEGER(iwp) :: topo_top_index !< orography top index, used to map 3D buildings onto terrain |
---|
[2696] | 1097 | |
---|
| 1098 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: displace_dum !< displacements of start addresses, used for MPI_ALLGATHERV |
---|
| 1099 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids !< building IDs on entire model domain |
---|
| 1100 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_final !< building IDs on entire model domain, multiple occurences are sorted out |
---|
| 1101 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_final_tmp !< temporary array used for resizing |
---|
| 1102 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_l !< building IDs on local subdomain |
---|
| 1103 | INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: build_ids_l_tmp !< temporary array used to resize array of building IDs |
---|
| 1104 | |
---|
| 1105 | INTEGER(iwp), DIMENSION(0:numprocs-1) :: num_buildings !< number of buildings with different ID on entire model domain |
---|
| 1106 | INTEGER(iwp), DIMENSION(0:numprocs-1) :: num_buildings_l !< number of buildings with different ID on local subdomain |
---|
| 1107 | |
---|
| 1108 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo_3d !< input array for 3D topography and dummy array for setting "outer"-flags |
---|
| 1109 | |
---|
| 1110 | REAL(wp) :: ocean_offset !< offset to consider inverse vertical coordinate at topography definition |
---|
[3103] | 1111 | REAL(wp) :: oro_min = 0.0_wp !< minimum terrain height in entire model domain, used to reference terrain to zero |
---|
[2696] | 1112 | REAL(wp), DIMENSION(:), ALLOCATABLE :: oro_max !< maximum terrain height occupied by an building with certain id |
---|
| 1113 | REAL(wp), DIMENSION(:), ALLOCATABLE :: oro_max_l !< maximum terrain height occupied by an building with certain id, on local subdomain |
---|
| 1114 | |
---|
| 1115 | ! |
---|
[3103] | 1116 | !-- Reference lowest terrain height to zero. In case the minimum terrain height |
---|
| 1117 | !-- is non-zero, all grid points of the lower vertical grid levels might be |
---|
| 1118 | !-- entirely below the surface, meaning a waste of computational resources. |
---|
| 1119 | !-- In order to avoid this, remove the lowest terrain height. Please note, |
---|
| 1120 | !-- in case of a nested run, the global minimum from all parent and childs |
---|
| 1121 | !-- need to be remove to avoid steep edges at the child-domain boundaries. |
---|
| 1122 | IF ( input_pids_static ) THEN |
---|
[4159] | 1123 | |
---|
[3200] | 1124 | #if defined( __parallel ) |
---|
[3103] | 1125 | CALL MPI_ALLREDUCE( MINVAL( terrain_height_f%var ), oro_min, 1, & |
---|
| 1126 | MPI_REAL, MPI_MIN, MPI_COMM_WORLD, ierr ) |
---|
[3200] | 1127 | #else |
---|
| 1128 | oro_min = MINVAL( terrain_height_f%var ) |
---|
| 1129 | #endif |
---|
[3103] | 1130 | terrain_height_f%var = terrain_height_f%var - oro_min |
---|
| 1131 | ! |
---|
| 1132 | !-- Give an informative message that terrain height is referenced to zero |
---|
| 1133 | IF ( oro_min > 0.0_wp ) THEN |
---|
| 1134 | WRITE( message_string, * ) 'Terrain height was internally shifted '//& |
---|
| 1135 | 'downwards by ', oro_min, 'meter(s) to save ' // & |
---|
| 1136 | 'computational resources.' |
---|
| 1137 | CALL message( 'init_grid', 'PA0505', 0, 0, 0, 6, 0 ) |
---|
| 1138 | ENDIF |
---|
| 1139 | ENDIF |
---|
| 1140 | |
---|
| 1141 | ! |
---|
[2696] | 1142 | !-- In the following, buildings and orography are further preprocessed |
---|
| 1143 | !-- before they are mapped on the LES grid. |
---|
| 1144 | !-- Buildings are mapped on top of the orography by maintaining the roof |
---|
| 1145 | !-- shape of the building. This can be achieved by referencing building on |
---|
| 1146 | !-- top of the maximum terrain height within the area occupied by the |
---|
| 1147 | !-- respective building. As buildings and terrain height are defined PE-wise, |
---|
| 1148 | !-- parallelization of this referencing is required (a building can be |
---|
| 1149 | !-- distributed between different PEs). |
---|
| 1150 | !-- In a first step, determine the number of buildings with different |
---|
| 1151 | !-- building id on each PE. In a next step, all building ids are gathered |
---|
| 1152 | !-- into one array which is present to all PEs. For each building ID, |
---|
| 1153 | !-- the maximum terrain height occupied by the respective building is |
---|
| 1154 | !-- computed and distributed to each PE. |
---|
| 1155 | !-- Finally, for each building id and its respective reference orography, |
---|
| 1156 | !-- builidings are mapped on top. |
---|
| 1157 | !-- |
---|
| 1158 | !-- First, pre-set topography flags, bit 1 indicates orography, bit 2 |
---|
| 1159 | !-- buildings |
---|
| 1160 | !-- classify the respective surfaces. |
---|
| 1161 | topo_3d = IBSET( topo_3d, 0 ) |
---|
| 1162 | topo_3d(nzb,:,:) = IBCLR( topo_3d(nzb,:,:), 0 ) |
---|
| 1163 | ! |
---|
[3051] | 1164 | !-- In order to map topography on PALM grid also in case of ocean simulations, |
---|
| 1165 | !-- pre-calculate an offset value. |
---|
[3294] | 1166 | ocean_offset = MERGE( zw(0), 0.0_wp, ocean_mode ) |
---|
[3051] | 1167 | ! |
---|
[2696] | 1168 | !-- Reference buildings on top of orography. This is not necessary |
---|
| 1169 | !-- if topography is read from ASCII file as no distinction between buildings |
---|
| 1170 | !-- and terrain height can be made. Moreover, this is also not necessary if |
---|
| 1171 | !-- urban-surface and land-surface model are used at the same time. |
---|
[2897] | 1172 | IF ( input_pids_static ) THEN |
---|
| 1173 | |
---|
| 1174 | IF ( buildings_f%from_file ) THEN |
---|
| 1175 | num_buildings_l = 0 |
---|
| 1176 | num_buildings = 0 |
---|
[2696] | 1177 | ! |
---|
[3925] | 1178 | !-- Allocate at least one element for building ids and give it an inital |
---|
| 1179 | !-- negative value that will be overwritten later. This, however, is |
---|
| 1180 | !-- necessary in case there all IDs in the model domain are fill values. |
---|
[2897] | 1181 | ALLOCATE( build_ids_l(1) ) |
---|
[3925] | 1182 | build_ids_l = -1 |
---|
[2897] | 1183 | DO i = nxl, nxr |
---|
| 1184 | DO j = nys, nyn |
---|
| 1185 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
| 1186 | IF ( num_buildings_l(myid) > 0 ) THEN |
---|
[4144] | 1187 | IF ( ANY( building_id_f%var(j,i) == build_ids_l ) ) & |
---|
[2897] | 1188 | THEN |
---|
| 1189 | CYCLE |
---|
| 1190 | ELSE |
---|
| 1191 | num_buildings_l(myid) = num_buildings_l(myid) + 1 |
---|
[2696] | 1192 | ! |
---|
| 1193 | !-- Resize array with different local building ids |
---|
| 1194 | ALLOCATE( build_ids_l_tmp(1:SIZE(build_ids_l)) ) |
---|
| 1195 | build_ids_l_tmp = build_ids_l |
---|
| 1196 | DEALLOCATE( build_ids_l ) |
---|
| 1197 | ALLOCATE( build_ids_l(1:num_buildings_l(myid)) ) |
---|
| 1198 | build_ids_l(1:num_buildings_l(myid)-1) = & |
---|
| 1199 | build_ids_l_tmp(1:num_buildings_l(myid)-1) |
---|
| 1200 | build_ids_l(num_buildings_l(myid)) = building_id_f%var(j,i) |
---|
| 1201 | DEALLOCATE( build_ids_l_tmp ) |
---|
| 1202 | ENDIF |
---|
| 1203 | ! |
---|
[2897] | 1204 | !-- First occuring building id on PE |
---|
| 1205 | ELSE |
---|
| 1206 | num_buildings_l(myid) = num_buildings_l(myid) + 1 |
---|
| 1207 | build_ids_l(1) = building_id_f%var(j,i) |
---|
| 1208 | ENDIF |
---|
[2696] | 1209 | ENDIF |
---|
[2897] | 1210 | ENDDO |
---|
[2696] | 1211 | ENDDO |
---|
| 1212 | ! |
---|
[2897] | 1213 | !-- Determine number of different building ids for the entire domain |
---|
[2696] | 1214 | #if defined( __parallel ) |
---|
[2897] | 1215 | CALL MPI_ALLREDUCE( num_buildings_l, num_buildings, numprocs, & |
---|
| 1216 | MPI_INTEGER, MPI_SUM, comm2d, ierr ) |
---|
[2696] | 1217 | #else |
---|
[2897] | 1218 | num_buildings = num_buildings_l |
---|
[2696] | 1219 | #endif |
---|
| 1220 | ! |
---|
[2897] | 1221 | !-- Gather all buildings ids on each PEs. |
---|
| 1222 | !-- First, allocate array encompassing all building ids in model domain. |
---|
| 1223 | ALLOCATE( build_ids(1:SUM(num_buildings)) ) |
---|
[2696] | 1224 | #if defined( __parallel ) |
---|
| 1225 | ! |
---|
[2897] | 1226 | !-- Allocate array for displacements. |
---|
| 1227 | !-- As each PE may has a different number of buildings, so that |
---|
| 1228 | !-- the block sizes send by each PE may not be equal. Hence, |
---|
| 1229 | !-- information about the respective displacement is required, indicating |
---|
| 1230 | !-- the respective adress where each MPI-task writes into the receive |
---|
| 1231 | !-- buffer array |
---|
| 1232 | ALLOCATE( displace_dum(0:numprocs-1) ) |
---|
| 1233 | displace_dum(0) = 0 |
---|
| 1234 | DO i = 1, numprocs-1 |
---|
| 1235 | displace_dum(i) = displace_dum(i-1) + num_buildings(i-1) |
---|
| 1236 | ENDDO |
---|
[2696] | 1237 | |
---|
[2897] | 1238 | CALL MPI_ALLGATHERV( build_ids_l(1:num_buildings_l(myid)), & |
---|
| 1239 | num_buildings(myid), & |
---|
| 1240 | MPI_INTEGER, & |
---|
| 1241 | build_ids, & |
---|
| 1242 | num_buildings, & |
---|
| 1243 | displace_dum, & |
---|
| 1244 | MPI_INTEGER, & |
---|
| 1245 | comm2d, ierr ) |
---|
[2696] | 1246 | |
---|
[2897] | 1247 | DEALLOCATE( displace_dum ) |
---|
[2696] | 1248 | |
---|
| 1249 | #else |
---|
[2897] | 1250 | build_ids = build_ids_l |
---|
[2696] | 1251 | #endif |
---|
| 1252 | |
---|
| 1253 | ! |
---|
[2897] | 1254 | !-- Note, in parallel mode building ids can occure mutliple times, as |
---|
| 1255 | !-- each PE has send its own ids. Therefore, sort out building ids which |
---|
| 1256 | !-- appear more than one time. |
---|
| 1257 | num_build = 0 |
---|
| 1258 | DO nr = 1, SIZE(build_ids) |
---|
[2696] | 1259 | |
---|
[2897] | 1260 | IF ( ALLOCATED(build_ids_final) ) THEN |
---|
[4144] | 1261 | IF ( ANY( build_ids(nr) == build_ids_final ) ) THEN |
---|
[2897] | 1262 | CYCLE |
---|
| 1263 | ELSE |
---|
| 1264 | num_build = num_build + 1 |
---|
| 1265 | ! |
---|
| 1266 | !-- Resize |
---|
| 1267 | ALLOCATE( build_ids_final_tmp(1:num_build) ) |
---|
| 1268 | build_ids_final_tmp(1:num_build-1) = build_ids_final(1:num_build-1) |
---|
| 1269 | DEALLOCATE( build_ids_final ) |
---|
| 1270 | ALLOCATE( build_ids_final(1:num_build) ) |
---|
| 1271 | build_ids_final(1:num_build-1) = build_ids_final_tmp(1:num_build-1) |
---|
| 1272 | build_ids_final(num_build) = build_ids(nr) |
---|
| 1273 | DEALLOCATE( build_ids_final_tmp ) |
---|
| 1274 | ENDIF |
---|
[2696] | 1275 | ELSE |
---|
| 1276 | num_build = num_build + 1 |
---|
| 1277 | ALLOCATE( build_ids_final(1:num_build) ) |
---|
| 1278 | build_ids_final(num_build) = build_ids(nr) |
---|
[2897] | 1279 | ENDIF |
---|
| 1280 | ENDDO |
---|
[2696] | 1281 | |
---|
| 1282 | ! |
---|
[3051] | 1283 | !-- Determine maximumum terrain height occupied by the respective |
---|
| 1284 | !-- building and temporalily store on oro_max |
---|
[2897] | 1285 | ALLOCATE( oro_max_l(1:SIZE(build_ids_final)) ) |
---|
| 1286 | ALLOCATE( oro_max(1:SIZE(build_ids_final)) ) |
---|
| 1287 | oro_max_l = 0.0_wp |
---|
[2696] | 1288 | |
---|
[2897] | 1289 | DO nr = 1, SIZE(build_ids_final) |
---|
[4159] | 1290 | oro_max_l(nr) = MAXVAL( & |
---|
| 1291 | MERGE( terrain_height_f%var(nys:nyn,nxl:nxr), & |
---|
| 1292 | 0.0_wp, & |
---|
| 1293 | building_id_f%var(nys:nyn,nxl:nxr) == & |
---|
[2897] | 1294 | build_ids_final(nr) ) ) |
---|
| 1295 | ENDDO |
---|
[2696] | 1296 | |
---|
| 1297 | #if defined( __parallel ) |
---|
[2897] | 1298 | IF ( SIZE(build_ids_final) >= 1 ) THEN |
---|
[4159] | 1299 | CALL MPI_ALLREDUCE( oro_max_l, oro_max, SIZE( oro_max ), MPI_REAL,& |
---|
[2897] | 1300 | MPI_MAX, comm2d, ierr ) |
---|
| 1301 | ENDIF |
---|
[2696] | 1302 | #else |
---|
[2897] | 1303 | oro_max = oro_max_l |
---|
[2696] | 1304 | #endif |
---|
[3051] | 1305 | ! |
---|
| 1306 | !-- Finally, determine discrete grid height of maximum orography occupied |
---|
[4159] | 1307 | !-- by a building. Use all-or-nothing approach, i.e. if terrain |
---|
| 1308 | !-- exceeds the scalar level the grid box is fully terrain and the |
---|
| 1309 | !-- maximum terrain is set to the zw level. |
---|
| 1310 | !-- terrain or |
---|
[3051] | 1311 | oro_max_l = 0.0 |
---|
| 1312 | DO nr = 1, SIZE(build_ids_final) |
---|
| 1313 | DO k = nzb, nzt |
---|
| 1314 | IF ( zu(k) - ocean_offset <= oro_max(nr) ) & |
---|
[3142] | 1315 | oro_max_l(nr) = zw(k) - ocean_offset |
---|
[3051] | 1316 | ENDDO |
---|
[3142] | 1317 | oro_max(nr) = oro_max_l(nr) |
---|
[3051] | 1318 | ENDDO |
---|
[2897] | 1319 | ENDIF |
---|
[2696] | 1320 | ! |
---|
[4245] | 1321 | !-- Allocate array for storing terrain height under buildings |
---|
| 1322 | IF ( buildings_f%from_file ) THEN |
---|
| 1323 | ALLOCATE( buildings_f%oro_max(nysg:nyng,nxlg:nxrg) ) |
---|
| 1324 | buildings_f%oro_max = buildings_f%fill1 |
---|
| 1325 | END IF |
---|
| 1326 | ! |
---|
[2867] | 1327 | !-- Map orography as well as buildings onto grid. |
---|
[2696] | 1328 | DO i = nxl, nxr |
---|
| 1329 | DO j = nys, nyn |
---|
[2867] | 1330 | topo_top_index = 0 |
---|
[3142] | 1331 | ! |
---|
| 1332 | !-- Obtain index in global building_id array |
---|
| 1333 | IF ( buildings_f%from_file ) THEN |
---|
| 1334 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
| 1335 | ! |
---|
| 1336 | !-- Determine index where maximum terrain height occupied by |
---|
| 1337 | !-- the respective building height is stored. |
---|
| 1338 | nr = MINLOC( ABS( build_ids_final - & |
---|
| 1339 | building_id_f%var(j,i) ), DIM = 1 ) |
---|
[4245] | 1340 | ! |
---|
| 1341 | !-- Save grid-indexed oro_max |
---|
| 1342 | buildings_f%oro_max(j,i) = oro_max(nr) |
---|
[3142] | 1343 | ENDIF |
---|
| 1344 | ENDIF |
---|
[2696] | 1345 | DO k = nzb, nzt |
---|
| 1346 | ! |
---|
| 1347 | !-- In a first step, if grid point is below or equal the given |
---|
| 1348 | !-- terrain height, grid point is flagged to be of type natural. |
---|
| 1349 | !-- Please note, in case there is also a building which is lower |
---|
| 1350 | !-- than the vertical grid spacing, initialization of surface |
---|
| 1351 | !-- attributes will not be correct as given surface information |
---|
| 1352 | !-- will not be in accordance to the classified grid points. |
---|
[4159] | 1353 | !-- Hence, in this case, also a building flag. |
---|
[2747] | 1354 | IF ( zu(k) - ocean_offset <= terrain_height_f%var(j,i) ) THEN |
---|
[4189] | 1355 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
| 1356 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 1 ) |
---|
| 1357 | topo_top_index = k ! topo_top_index + 1 |
---|
[2696] | 1358 | ENDIF |
---|
| 1359 | ! |
---|
| 1360 | !-- Set building grid points. Here, only consider 2D buildings. |
---|
| 1361 | !-- 3D buildings require separate treatment. |
---|
[2897] | 1362 | IF ( buildings_f%from_file .AND. buildings_f%lod == 1 ) THEN |
---|
[4159] | 1363 | ! |
---|
| 1364 | !-- Fill-up the terrain to the level of maximum orography |
---|
| 1365 | !-- within the building-covered area. |
---|
| 1366 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
| 1367 | ! |
---|
| 1368 | !-- Note, oro_max is always on zw level |
---|
| 1369 | IF ( zu(k) - ocean_offset < oro_max(nr) ) THEN |
---|
[2696] | 1370 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
[4159] | 1371 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 1 ) |
---|
| 1372 | ELSEIF ( zu(k) - ocean_offset <= & |
---|
| 1373 | oro_max(nr) + buildings_f%var_2d(j,i) ) THEN |
---|
| 1374 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
[2696] | 1375 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
| 1376 | ENDIF |
---|
| 1377 | ENDIF |
---|
| 1378 | ENDIF |
---|
| 1379 | ENDDO |
---|
| 1380 | ! |
---|
[4159] | 1381 | !-- Special treatment for non grid-resolved buildings. This case, |
---|
| 1382 | !-- the uppermost terrain grid point is flagged as building as well |
---|
| 1383 | !-- well, even though no building exists at all. However, the |
---|
| 1384 | !-- surface element will be identified as urban-surface and the |
---|
| 1385 | !-- input data provided by the drivers is consistent to the surface |
---|
| 1386 | !-- classification. Else, all non grid-resolved buildings would vanish |
---|
| 1387 | !-- and identified as terrain grid points, which, however, won't be |
---|
| 1388 | !-- consistent with the input data. |
---|
| 1389 | IF ( buildings_f%from_file .AND. buildings_f%lod == 1 ) THEN |
---|
| 1390 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
| 1391 | DO k = nzb, nzt |
---|
| 1392 | IF( zw(k) - ocean_offset == oro_max(nr) ) THEN |
---|
| 1393 | IF ( buildings_f%var_2d(j,i) <= zu(k+1) - zw(k) ) THEN |
---|
| 1394 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
| 1395 | ENDIF |
---|
| 1396 | ENDIF |
---|
| 1397 | ENDDO |
---|
| 1398 | ENDIF |
---|
| 1399 | ENDIF |
---|
| 1400 | ! |
---|
[2696] | 1401 | !-- Map 3D buildings onto terrain height. |
---|
[2867] | 1402 | !-- In case of any slopes, map building on top of maximum terrain |
---|
| 1403 | !-- height covered by the building. In other words, extend |
---|
| 1404 | !-- building down to the respective local terrain-surface height. |
---|
[2897] | 1405 | IF ( buildings_f%from_file .AND. buildings_f%lod == 2 ) THEN |
---|
[2696] | 1406 | IF ( building_id_f%var(j,i) /= building_id_f%fill ) THEN |
---|
| 1407 | ! |
---|
[3051] | 1408 | !-- Extend building down to the terrain surface, i.e. fill-up |
---|
| 1409 | !-- surface irregularities below a building. Note, oro_max |
---|
| 1410 | !-- is already a discrete height according to the all-or-nothing |
---|
| 1411 | !-- approach, i.e. grid box is either topography or atmosphere, |
---|
| 1412 | !-- terrain top is defined at upper bound of the grid box. |
---|
| 1413 | !-- Hence, check for zw in this case. |
---|
[3115] | 1414 | !-- Note, do this only for buildings which are surface mounted, |
---|
| 1415 | !-- i.e. building types 1-6. Below bridges, which are represented |
---|
| 1416 | !-- exclusively by building type 7, terrain shape should be |
---|
| 1417 | !-- maintained. |
---|
[3855] | 1418 | IF ( building_type_f%from_file ) THEN |
---|
| 1419 | IF ( building_type_f%var(j,i) /= 7 ) THEN |
---|
| 1420 | DO k = topo_top_index + 1, nzt + 1 |
---|
[4159] | 1421 | IF ( zu(k) - ocean_offset <= oro_max(nr) ) THEN |
---|
[3855] | 1422 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
[4159] | 1423 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 1 ) |
---|
[3855] | 1424 | ENDIF |
---|
| 1425 | ENDDO |
---|
| 1426 | ! |
---|
| 1427 | !-- After surface irregularities are smoothen, determine |
---|
| 1428 | !-- lower start index where building starts. |
---|
| 1429 | DO k = nzb, nzt |
---|
[4159] | 1430 | IF ( zu(k) - ocean_offset <= oro_max(nr) ) & |
---|
[3855] | 1431 | topo_top_index = k |
---|
| 1432 | ENDDO |
---|
| 1433 | ENDIF |
---|
[3115] | 1434 | ENDIF |
---|
[3051] | 1435 | ! |
---|
| 1436 | !-- Finally, map building on top. |
---|
[2867] | 1437 | k2 = 0 |
---|
| 1438 | DO k = topo_top_index, nzt + 1 |
---|
[2796] | 1439 | IF ( k2 <= buildings_f%nz-1 ) THEN |
---|
[2696] | 1440 | IF ( buildings_f%var_3d(k2,j,i) == 1 ) THEN |
---|
| 1441 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
| 1442 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
| 1443 | ENDIF |
---|
| 1444 | ENDIF |
---|
| 1445 | k2 = k2 + 1 |
---|
| 1446 | ENDDO |
---|
| 1447 | ENDIF |
---|
| 1448 | ENDIF |
---|
| 1449 | ENDDO |
---|
| 1450 | ENDDO |
---|
| 1451 | ! |
---|
[4265] | 1452 | !-- Horizontal exchange the oro_max array, which is required to for |
---|
| 1453 | !-- initialization of building-surface properties. |
---|
| 1454 | IF ( ALLOCATED( buildings_f%oro_max ) ) THEN |
---|
| 1455 | CALL exchange_horiz_2d( buildings_f%oro_max(:,:), nbgp ) |
---|
| 1456 | ENDIF |
---|
[4245] | 1457 | ! |
---|
[2696] | 1458 | !-- Deallocate temporary arrays required for processing and reading data |
---|
| 1459 | IF ( ALLOCATED( oro_max ) ) DEALLOCATE( oro_max ) |
---|
| 1460 | IF ( ALLOCATED( oro_max_l ) ) DEALLOCATE( oro_max_l ) |
---|
| 1461 | IF ( ALLOCATED( build_ids_final ) ) DEALLOCATE( build_ids_final ) |
---|
| 1462 | ! |
---|
| 1463 | !-- Topography input via ASCII format. |
---|
| 1464 | ELSE |
---|
[3294] | 1465 | ocean_offset = MERGE( zw(0), 0.0_wp, ocean_mode ) |
---|
[4159] | 1466 | ! |
---|
| 1467 | !-- Initialize topography bit 0 (indicates obstacle) everywhere to zero |
---|
| 1468 | !-- and clear all grid points at nzb, where alway a surface is defined. |
---|
| 1469 | !-- Further, set also bit 1 (indicates terrain) at nzb, which is further |
---|
| 1470 | !-- used for masked data output and further processing. Note, in the |
---|
| 1471 | !-- ASCII case no distinction is made between buildings and terrain, |
---|
| 1472 | !-- so that setting of bit 1 and 2 at the same time has no effect. |
---|
[2696] | 1473 | topo_3d = IBSET( topo_3d, 0 ) |
---|
| 1474 | topo_3d(nzb,:,:) = IBCLR( topo_3d(nzb,:,:), 0 ) |
---|
[4159] | 1475 | topo_3d(nzb,:,:) = IBSET( topo_3d(nzb,:,:), 1 ) |
---|
[2696] | 1476 | DO i = nxl, nxr |
---|
| 1477 | DO j = nys, nyn |
---|
| 1478 | DO k = nzb, nzt |
---|
[3538] | 1479 | ! |
---|
| 1480 | !-- Flag topography for all grid points which are below |
---|
| 1481 | !-- the local topography height. |
---|
| 1482 | !-- Note, each topography is flagged as building. |
---|
[2747] | 1483 | IF ( zu(k) - ocean_offset <= buildings_f%var_2d(j,i) ) THEN |
---|
[4189] | 1484 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
| 1485 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) !indicates building |
---|
[2696] | 1486 | ENDIF |
---|
| 1487 | ENDDO |
---|
| 1488 | ENDDO |
---|
| 1489 | ENDDO |
---|
| 1490 | ENDIF |
---|
| 1491 | |
---|
| 1492 | CALL exchange_horiz_int( topo_3d, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
| 1493 | |
---|
| 1494 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
| 1495 | IF ( nys == 0 ) topo_3d(:,-1,:) = topo_3d(:,0,:) |
---|
| 1496 | IF ( nyn == ny ) topo_3d(:,ny+1,:) = topo_3d(:,ny,:) |
---|
| 1497 | ENDIF |
---|
| 1498 | |
---|
| 1499 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
| 1500 | IF ( nxl == 0 ) topo_3d(:,:,-1) = topo_3d(:,:,0) |
---|
| 1501 | IF ( nxr == nx ) topo_3d(:,:,nx+1) = topo_3d(:,:,nx) |
---|
| 1502 | ENDIF |
---|
| 1503 | |
---|
| 1504 | END SUBROUTINE process_topography |
---|
| 1505 | |
---|
| 1506 | |
---|
| 1507 | ! Description: |
---|
| 1508 | ! -----------------------------------------------------------------------------! |
---|
| 1509 | !> Filter topography, i.e. fill holes resolved by only one grid point. |
---|
| 1510 | !> Such holes are suspected to lead to velocity blow-ups as continuity |
---|
| 1511 | !> equation on discrete grid cannot be fulfilled in such case. |
---|
| 1512 | !------------------------------------------------------------------------------! |
---|
| 1513 | SUBROUTINE filter_topography( topo_3d ) |
---|
| 1514 | |
---|
| 1515 | USE control_parameters, & |
---|
| 1516 | ONLY: bc_lr_cyc, bc_ns_cyc, message_string |
---|
| 1517 | |
---|
| 1518 | USE indices, & |
---|
| 1519 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nzb, nzt |
---|
| 1520 | |
---|
| 1521 | USE netcdf_data_input_mod, & |
---|
| 1522 | ONLY: building_id_f, building_type_f |
---|
| 1523 | |
---|
| 1524 | USE pegrid |
---|
| 1525 | |
---|
| 1526 | IMPLICIT NONE |
---|
| 1527 | |
---|
[2893] | 1528 | LOGICAL :: filled = .FALSE. !< flag indicating if holes were filled |
---|
| 1529 | |
---|
[2696] | 1530 | INTEGER(iwp) :: i !< running index along x-direction |
---|
| 1531 | INTEGER(iwp) :: j !< running index along y-direction |
---|
| 1532 | INTEGER(iwp) :: k !< running index along z-direction |
---|
| 1533 | INTEGER(iwp) :: num_hole !< number of holes (in topography) resolved by only one grid point |
---|
| 1534 | INTEGER(iwp) :: num_hole_l !< number of holes (in topography) resolved by only one grid point on local PE |
---|
| 1535 | INTEGER(iwp) :: num_wall !< number of surrounding vertical walls for a single grid point |
---|
| 1536 | |
---|
[2955] | 1537 | INTEGER(iwp), DIMENSION(:,:,:), ALLOCATABLE :: topo_tmp !< temporary 3D-topography used to fill holes |
---|
| 1538 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo_3d !< 3D-topography array merging buildings and orography |
---|
[2696] | 1539 | ! |
---|
| 1540 | !-- Before checking for holes, set lateral boundary conditions for |
---|
| 1541 | !-- topography. After hole-filling, boundary conditions must be set again. |
---|
| 1542 | !-- Several iterations are performed, in order to fill holes which might |
---|
| 1543 | !-- emerge by the filling-algorithm itself. |
---|
| 1544 | ALLOCATE( topo_tmp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
| 1545 | topo_tmp = 0 |
---|
| 1546 | |
---|
| 1547 | num_hole = 99999 |
---|
| 1548 | DO WHILE ( num_hole > 0 ) |
---|
| 1549 | |
---|
| 1550 | num_hole = 0 |
---|
| 1551 | CALL exchange_horiz_int( topo_3d, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
[2955] | 1552 | ! |
---|
| 1553 | !-- Exchange also building ID and type. Note, building_type is an one-byte |
---|
| 1554 | !-- variable. |
---|
| 1555 | IF ( building_id_f%from_file ) & |
---|
| 1556 | CALL exchange_horiz_2d_int( building_id_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
[3763] | 1557 | IF ( building_type_f%from_file ) & |
---|
| 1558 | CALL exchange_horiz_2d_byte( building_type_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
[2696] | 1559 | |
---|
| 1560 | topo_tmp = topo_3d |
---|
| 1561 | ! |
---|
| 1562 | !-- In case of non-cyclic lateral boundaries, assume lateral boundary to be |
---|
| 1563 | !-- a solid wall. Thus, intermediate spaces of one grid point between |
---|
| 1564 | !-- boundary and some topographic structure will be filled. |
---|
| 1565 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
| 1566 | IF ( nys == 0 ) topo_tmp(:,-1,:) = IBCLR( topo_tmp(:,0,:), 0 ) |
---|
| 1567 | IF ( nyn == ny ) topo_tmp(:,ny+1,:) = IBCLR( topo_tmp(:,ny,:), 0 ) |
---|
| 1568 | ENDIF |
---|
| 1569 | |
---|
| 1570 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
| 1571 | IF ( nxl == 0 ) topo_tmp(:,:,-1) = IBCLR( topo_tmp(:,:,0), 0 ) |
---|
| 1572 | IF ( nxr == nx ) topo_tmp(:,:,nx+1) = IBCLR( topo_tmp(:,:,nx), 0 ) |
---|
| 1573 | ENDIF |
---|
| 1574 | |
---|
| 1575 | num_hole_l = 0 |
---|
| 1576 | DO i = nxl, nxr |
---|
| 1577 | DO j = nys, nyn |
---|
| 1578 | DO k = nzb+1, nzt |
---|
| 1579 | IF ( BTEST( topo_tmp(k,j,i), 0 ) ) THEN |
---|
| 1580 | num_wall = 0 |
---|
| 1581 | IF ( .NOT. BTEST( topo_tmp(k,j-1,i), 0 ) ) & |
---|
| 1582 | num_wall = num_wall + 1 |
---|
| 1583 | IF ( .NOT. BTEST( topo_tmp(k,j+1,i), 0 ) ) & |
---|
| 1584 | num_wall = num_wall + 1 |
---|
| 1585 | IF ( .NOT. BTEST( topo_tmp(k,j,i-1), 0 ) ) & |
---|
| 1586 | num_wall = num_wall + 1 |
---|
| 1587 | IF ( .NOT. BTEST( topo_tmp(k,j,i+1), 0 ) ) & |
---|
| 1588 | num_wall = num_wall + 1 |
---|
| 1589 | IF ( .NOT. BTEST( topo_tmp(k-1,j,i), 0 ) ) & |
---|
| 1590 | num_wall = num_wall + 1 |
---|
| 1591 | IF ( .NOT. BTEST( topo_tmp(k+1,j,i), 0 ) ) & |
---|
| 1592 | num_wall = num_wall + 1 |
---|
| 1593 | |
---|
| 1594 | IF ( num_wall >= 4 ) THEN |
---|
| 1595 | num_hole_l = num_hole_l + 1 |
---|
| 1596 | ! |
---|
| 1597 | !-- Clear flag 0 and set special flag ( bit 3) to indicate |
---|
| 1598 | !-- that new topography point is a result of filtering process. |
---|
| 1599 | topo_3d(k,j,i) = IBCLR( topo_3d(k,j,i), 0 ) |
---|
| 1600 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 3 ) |
---|
| 1601 | ! |
---|
| 1602 | !-- If filled grid point is occupied by a building, classify |
---|
| 1603 | !-- it as building grid point. |
---|
| 1604 | IF ( building_type_f%from_file ) THEN |
---|
| 1605 | IF ( building_type_f%var(j,i) /= & |
---|
| 1606 | building_type_f%fill .OR. & |
---|
| 1607 | building_type_f%var(j+1,i) /= & |
---|
| 1608 | building_type_f%fill .OR. & |
---|
| 1609 | building_type_f%var(j-1,i) /= & |
---|
| 1610 | building_type_f%fill .OR. & |
---|
| 1611 | building_type_f%var(j,i+1) /= & |
---|
| 1612 | building_type_f%fill .OR. & |
---|
| 1613 | building_type_f%var(j,i-1) /= & |
---|
| 1614 | building_type_f%fill ) THEN |
---|
| 1615 | ! |
---|
| 1616 | !-- Set flag indicating building surfaces |
---|
| 1617 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 2 ) |
---|
| 1618 | ! |
---|
| 1619 | !-- Set building_type and ID at this position if not |
---|
| 1620 | !-- already set. This is required for proper |
---|
| 1621 | !-- initialization of urban-surface energy balance |
---|
| 1622 | !-- solver. |
---|
| 1623 | IF ( building_type_f%var(j,i) == & |
---|
| 1624 | building_type_f%fill ) THEN |
---|
| 1625 | |
---|
| 1626 | IF ( building_type_f%var(j+1,i) /= & |
---|
| 1627 | building_type_f%fill ) THEN |
---|
| 1628 | building_type_f%var(j,i) = & |
---|
| 1629 | building_type_f%var(j+1,i) |
---|
| 1630 | building_id_f%var(j,i) = & |
---|
| 1631 | building_id_f%var(j+1,i) |
---|
| 1632 | ELSEIF ( building_type_f%var(j-1,i) /= & |
---|
| 1633 | building_type_f%fill ) THEN |
---|
| 1634 | building_type_f%var(j,i) = & |
---|
| 1635 | building_type_f%var(j-1,i) |
---|
| 1636 | building_id_f%var(j,i) = & |
---|
| 1637 | building_id_f%var(j-1,i) |
---|
| 1638 | ELSEIF ( building_type_f%var(j,i+1) /= & |
---|
| 1639 | building_type_f%fill ) THEN |
---|
| 1640 | building_type_f%var(j,i) = & |
---|
| 1641 | building_type_f%var(j,i+1) |
---|
| 1642 | building_id_f%var(j,i) = & |
---|
| 1643 | building_id_f%var(j,i+1) |
---|
| 1644 | ELSEIF ( building_type_f%var(j,i-1) /= & |
---|
| 1645 | building_type_f%fill ) THEN |
---|
| 1646 | building_type_f%var(j,i) = & |
---|
| 1647 | building_type_f%var(j,i-1) |
---|
| 1648 | building_id_f%var(j,i) = & |
---|
| 1649 | building_id_f%var(j,i-1) |
---|
| 1650 | ENDIF |
---|
| 1651 | ENDIF |
---|
| 1652 | ENDIF |
---|
| 1653 | ENDIF |
---|
| 1654 | ! |
---|
| 1655 | !-- If filled grid point is already classified as building |
---|
| 1656 | !-- everything is fine, else classify this grid point as |
---|
| 1657 | !-- natural type grid point. This case, values for the |
---|
| 1658 | !-- surface type are already set. |
---|
| 1659 | IF ( .NOT. BTEST( topo_3d(k,j,i), 2 ) ) THEN |
---|
| 1660 | topo_3d(k,j,i) = IBSET( topo_3d(k,j,i), 1 ) |
---|
| 1661 | ENDIF |
---|
| 1662 | ENDIF |
---|
| 1663 | ENDIF |
---|
| 1664 | ENDDO |
---|
| 1665 | ENDDO |
---|
| 1666 | ENDDO |
---|
| 1667 | ! |
---|
| 1668 | !-- Count the total number of holes, required for informative message. |
---|
| 1669 | #if defined( __parallel ) |
---|
| 1670 | CALL MPI_ALLREDUCE( num_hole_l, num_hole, 1, MPI_INTEGER, MPI_SUM, & |
---|
| 1671 | comm2d, ierr ) |
---|
| 1672 | #else |
---|
| 1673 | num_hole = num_hole_l |
---|
| 1674 | #endif |
---|
[2893] | 1675 | IF ( num_hole > 0 .AND. .NOT. filled ) filled = .TRUE. |
---|
[2696] | 1676 | |
---|
[2893] | 1677 | ENDDO |
---|
[2696] | 1678 | ! |
---|
[2893] | 1679 | !-- Create an informative message if any holes were filled. |
---|
| 1680 | IF ( filled ) THEN |
---|
| 1681 | WRITE( message_string, * ) 'Topography was filtered, i.e. holes ' // & |
---|
| 1682 | 'resolved by only one grid point ' // & |
---|
| 1683 | 'were filled during initialization.' |
---|
| 1684 | CALL message( 'init_grid', 'PA0430', 0, 0, 0, 6, 0 ) |
---|
| 1685 | ENDIF |
---|
[2696] | 1686 | |
---|
| 1687 | DEALLOCATE( topo_tmp ) |
---|
| 1688 | ! |
---|
| 1689 | !-- Finally, exchange topo_3d array again and if necessary set Neumann boundary |
---|
| 1690 | !-- condition in case of non-cyclic lateral boundaries. |
---|
| 1691 | CALL exchange_horiz_int( topo_3d, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
| 1692 | |
---|
| 1693 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
| 1694 | IF ( nys == 0 ) topo_3d(:,-1,:) = topo_3d(:,0,:) |
---|
| 1695 | IF ( nyn == ny ) topo_3d(:,ny+1,:) = topo_3d(:,ny,:) |
---|
| 1696 | ENDIF |
---|
| 1697 | |
---|
| 1698 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
| 1699 | IF ( nxl == 0 ) topo_3d(:,:,-1) = topo_3d(:,:,0) |
---|
| 1700 | IF ( nxr == nx ) topo_3d(:,:,nx+1) = topo_3d(:,:,nx) |
---|
| 1701 | ENDIF |
---|
[2955] | 1702 | ! |
---|
| 1703 | !-- Exchange building ID and type. Note, building_type is an one-byte variable. |
---|
| 1704 | IF ( building_id_f%from_file ) & |
---|
| 1705 | CALL exchange_horiz_2d_int( building_id_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
[3763] | 1706 | IF ( building_type_f%from_file ) & |
---|
| 1707 | CALL exchange_horiz_2d_byte( building_type_f%var, nys, nyn, nxl, nxr, nbgp ) |
---|
[2696] | 1708 | |
---|
| 1709 | END SUBROUTINE filter_topography |
---|
| 1710 | |
---|
| 1711 | |
---|
| 1712 | ! Description: |
---|
| 1713 | ! -----------------------------------------------------------------------------! |
---|
| 1714 | !> Reads topography information from file or sets generic topography. Moreover, |
---|
| 1715 | !> all topography-relevant topography arrays are initialized, and grid flags |
---|
| 1716 | !> are set. |
---|
| 1717 | !------------------------------------------------------------------------------! |
---|
| 1718 | SUBROUTINE init_topo( topo ) |
---|
| 1719 | |
---|
| 1720 | USE arrays_3d, & |
---|
| 1721 | ONLY: zw |
---|
| 1722 | |
---|
| 1723 | USE control_parameters, & |
---|
| 1724 | ONLY: bc_lr_cyc, bc_ns_cyc, building_height, building_length_x, & |
---|
| 1725 | building_length_y, building_wall_left, building_wall_south, & |
---|
| 1726 | canyon_height, canyon_wall_left, canyon_wall_south, & |
---|
| 1727 | canyon_width_x, canyon_width_y, dp_level_ind_b, dz, & |
---|
[3241] | 1728 | message_string, topography, topography_grid_convention, & |
---|
[2696] | 1729 | tunnel_height, tunnel_length, tunnel_width_x, tunnel_width_y, & |
---|
| 1730 | tunnel_wall_depth |
---|
| 1731 | |
---|
| 1732 | USE grid_variables, & |
---|
| 1733 | ONLY: dx, dy |
---|
| 1734 | |
---|
| 1735 | USE indices, & |
---|
| 1736 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nz, & |
---|
| 1737 | nzb, nzt |
---|
| 1738 | |
---|
| 1739 | USE kinds |
---|
[4189] | 1740 | |
---|
| 1741 | USE netcdf_data_input_mod, & |
---|
| 1742 | ONLY: buildings_f, terrain_height_f |
---|
[2696] | 1743 | |
---|
| 1744 | USE pegrid |
---|
| 1745 | |
---|
| 1746 | IMPLICIT NONE |
---|
| 1747 | |
---|
| 1748 | INTEGER(iwp) :: bh !< temporary vertical index of building height |
---|
| 1749 | INTEGER(iwp) :: blx !< grid point number of building size along x |
---|
| 1750 | INTEGER(iwp) :: bly !< grid point number of building size along y |
---|
| 1751 | INTEGER(iwp) :: bxl !< index for left building wall |
---|
| 1752 | INTEGER(iwp) :: bxr !< index for right building wall |
---|
| 1753 | INTEGER(iwp) :: byn !< index for north building wall |
---|
| 1754 | INTEGER(iwp) :: bys !< index for south building wall |
---|
| 1755 | INTEGER(iwp) :: ch !< temporary vertical index for canyon height |
---|
| 1756 | INTEGER(iwp) :: cwx !< grid point number of canyon size along x |
---|
| 1757 | INTEGER(iwp) :: cwy !< grid point number of canyon size along y |
---|
| 1758 | INTEGER(iwp) :: cxl !< index for left canyon wall |
---|
| 1759 | INTEGER(iwp) :: cxr !< index for right canyon wall |
---|
| 1760 | INTEGER(iwp) :: cyn !< index for north canyon wall |
---|
| 1761 | INTEGER(iwp) :: cys !< index for south canyon wall |
---|
| 1762 | INTEGER(iwp) :: i !< index variable along x |
---|
| 1763 | INTEGER(iwp) :: j !< index variable along y |
---|
| 1764 | INTEGER(iwp) :: k !< index variable along z |
---|
| 1765 | INTEGER(iwp) :: hv_in !< heavyside function to model inner tunnel surface |
---|
| 1766 | INTEGER(iwp) :: hv_out !< heavyside function to model outer tunnel surface |
---|
| 1767 | INTEGER(iwp) :: txe_out !< end position of outer tunnel wall in x |
---|
| 1768 | INTEGER(iwp) :: txs_out !< start position of outer tunnel wall in x |
---|
| 1769 | INTEGER(iwp) :: tye_out !< end position of outer tunnel wall in y |
---|
| 1770 | INTEGER(iwp) :: tys_out !< start position of outer tunnel wall in y |
---|
| 1771 | INTEGER(iwp) :: txe_in !< end position of inner tunnel wall in x |
---|
| 1772 | INTEGER(iwp) :: txs_in !< start position of inner tunnel wall in x |
---|
| 1773 | INTEGER(iwp) :: tye_in !< end position of inner tunnel wall in y |
---|
| 1774 | INTEGER(iwp) :: tys_in !< start position of inner tunnel wall in y |
---|
| 1775 | INTEGER(iwp) :: td !< tunnel wall depth |
---|
| 1776 | INTEGER(iwp) :: th !< height of outer tunnel wall |
---|
| 1777 | |
---|
| 1778 | INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: nzb_local !< index for topography top at cell-center |
---|
| 1779 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo !< input array for 3D topography and dummy array for setting "outer"-flags |
---|
| 1780 | ! |
---|
[4189] | 1781 | !-- Check for correct setting of the namelist parameter topography. If |
---|
| 1782 | !-- topography information is read from file but topography = 'flat', |
---|
| 1783 | !-- initialization does not properly. |
---|
| 1784 | IF ( ( buildings_f%from_file .OR. terrain_height_f%from_file ) .AND. & |
---|
| 1785 | TRIM( topography ) /= 'read_from_file' ) THEN |
---|
| 1786 | message_string = 'If topography information is provided (via ' // & |
---|
| 1787 | 'Netcdf or ASCII input) topography = ' // & |
---|
| 1788 | '"read_from_file" is required.' |
---|
| 1789 | CALL message( 'init_grid', 'PA0437', 1, 2, 0, 6, 0 ) |
---|
| 1790 | ENDIF |
---|
| 1791 | ! |
---|
[1] | 1792 | !-- Set outer and inner index arrays for non-flat topography. |
---|
| 1793 | !-- Here consistency checks concerning domain size and periodicity are |
---|
| 1794 | !-- necessary. |
---|
| 1795 | !-- Within this SELECT CASE structure only nzb_local is initialized |
---|
| 1796 | !-- individually depending on the chosen topography type, all other index |
---|
| 1797 | !-- arrays are initialized further below. |
---|
| 1798 | SELECT CASE ( TRIM( topography ) ) |
---|
| 1799 | |
---|
| 1800 | CASE ( 'flat' ) |
---|
[2696] | 1801 | ! |
---|
[2232] | 1802 | !-- Initialilize 3D topography array, used later for initializing flags |
---|
[2696] | 1803 | topo(nzb+1:nzt+1,:,:) = IBSET( topo(nzb+1:nzt+1,:,:), 0 ) |
---|
[1] | 1804 | |
---|
| 1805 | CASE ( 'single_building' ) |
---|
| 1806 | ! |
---|
| 1807 | !-- Single rectangular building, by default centered in the middle of the |
---|
| 1808 | !-- total domain |
---|
| 1809 | blx = NINT( building_length_x / dx ) |
---|
| 1810 | bly = NINT( building_length_y / dy ) |
---|
[2232] | 1811 | bh = MINLOC( ABS( zw - building_height ), 1 ) - 1 |
---|
| 1812 | IF ( ABS( zw(bh) - building_height ) == & |
---|
[1675] | 1813 | ABS( zw(bh+1) - building_height ) ) bh = bh + 1 |
---|
[1322] | 1814 | IF ( building_wall_left == 9999999.9_wp ) THEN |
---|
[1] | 1815 | building_wall_left = ( nx + 1 - blx ) / 2 * dx |
---|
| 1816 | ENDIF |
---|
| 1817 | bxl = NINT( building_wall_left / dx ) |
---|
| 1818 | bxr = bxl + blx |
---|
| 1819 | |
---|
[1322] | 1820 | IF ( building_wall_south == 9999999.9_wp ) THEN |
---|
[2696] | 1821 | building_wall_south = ( ny + 1 - bly ) / 2 * dy |
---|
[1] | 1822 | ENDIF |
---|
| 1823 | bys = NINT( building_wall_south / dy ) |
---|
| 1824 | byn = bys + bly |
---|
| 1825 | |
---|
| 1826 | ! |
---|
| 1827 | !-- Building size has to meet some requirements |
---|
[2696] | 1828 | IF ( ( bxl < 1 ) .OR. ( bxr > nx-1 ) .OR. ( bxr < bxl+3 ) .OR. & |
---|
[1] | 1829 | ( bys < 1 ) .OR. ( byn > ny-1 ) .OR. ( byn < bys+3 ) ) THEN |
---|
[274] | 1830 | WRITE( message_string, * ) 'inconsistent building parameters:', & |
---|
[3046] | 1831 | '&bxl=', bxl, 'bxr=', bxr, 'bys=', bys, & |
---|
[274] | 1832 | 'byn=', byn, 'nx=', nx, 'ny=', ny |
---|
[254] | 1833 | CALL message( 'init_grid', 'PA0203', 1, 2, 0, 6, 0 ) |
---|
[1] | 1834 | ENDIF |
---|
| 1835 | |
---|
[2696] | 1836 | ALLOCATE( nzb_local(nysg:nyng,nxlg:nxrg) ) |
---|
[2892] | 1837 | nzb_local = 0 |
---|
[1] | 1838 | ! |
---|
[1968] | 1839 | !-- Define the building. |
---|
| 1840 | IF ( bxl <= nxr .AND. bxr >= nxl .AND. & |
---|
[2696] | 1841 | bys <= nyn .AND. byn >= nys ) & |
---|
[1968] | 1842 | nzb_local(MAX(nys,bys):MIN(nyn,byn),MAX(nxl,bxl):MIN(nxr,bxr)) = bh |
---|
[2232] | 1843 | ! |
---|
[2696] | 1844 | !-- Set bit array on basis of nzb_local |
---|
| 1845 | DO i = nxl, nxr |
---|
| 1846 | DO j = nys, nyn |
---|
| 1847 | topo(nzb_local(j,i)+1:nzt+1,j,i) = & |
---|
| 1848 | IBSET( topo(nzb_local(j,i)+1:nzt+1,j,i), 0 ) |
---|
[2232] | 1849 | ENDDO |
---|
| 1850 | ENDDO |
---|
[2696] | 1851 | |
---|
| 1852 | DEALLOCATE( nzb_local ) |
---|
[2232] | 1853 | |
---|
[2696] | 1854 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
[2823] | 1855 | ! |
---|
| 1856 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
| 1857 | !-- boundary conditions for topography. |
---|
| 1858 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
| 1859 | IF ( nys == 0 ) THEN |
---|
| 1860 | DO i = 1, nbgp |
---|
| 1861 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
| 1862 | ENDDO |
---|
| 1863 | ENDIF |
---|
| 1864 | IF ( nyn == ny ) THEN |
---|
| 1865 | DO i = 1, nbgp |
---|
| 1866 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
| 1867 | ENDDO |
---|
| 1868 | ENDIF |
---|
| 1869 | ENDIF |
---|
| 1870 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
| 1871 | IF ( nxl == 0 ) THEN |
---|
| 1872 | DO i = 1, nbgp |
---|
| 1873 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
| 1874 | ENDDO |
---|
| 1875 | ENDIF |
---|
| 1876 | IF ( nxr == nx ) THEN |
---|
| 1877 | DO i = 1, nbgp |
---|
| 1878 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
| 1879 | ENDDO |
---|
| 1880 | ENDIF |
---|
| 1881 | ENDIF |
---|
[2232] | 1882 | |
---|
[240] | 1883 | CASE ( 'single_street_canyon' ) |
---|
| 1884 | ! |
---|
| 1885 | !-- Single quasi-2D street canyon of infinite length in x or y direction. |
---|
| 1886 | !-- The canyon is centered in the other direction by default. |
---|
[1322] | 1887 | IF ( canyon_width_x /= 9999999.9_wp ) THEN |
---|
[240] | 1888 | ! |
---|
| 1889 | !-- Street canyon in y direction |
---|
| 1890 | cwx = NINT( canyon_width_x / dx ) |
---|
[1322] | 1891 | IF ( canyon_wall_left == 9999999.9_wp ) THEN |
---|
[240] | 1892 | canyon_wall_left = ( nx + 1 - cwx ) / 2 * dx |
---|
| 1893 | ENDIF |
---|
| 1894 | cxl = NINT( canyon_wall_left / dx ) |
---|
| 1895 | cxr = cxl + cwx |
---|
[1322] | 1896 | ELSEIF ( canyon_width_y /= 9999999.9_wp ) THEN |
---|
[240] | 1897 | ! |
---|
| 1898 | !-- Street canyon in x direction |
---|
| 1899 | cwy = NINT( canyon_width_y / dy ) |
---|
[1322] | 1900 | IF ( canyon_wall_south == 9999999.9_wp ) THEN |
---|
[240] | 1901 | canyon_wall_south = ( ny + 1 - cwy ) / 2 * dy |
---|
| 1902 | ENDIF |
---|
| 1903 | cys = NINT( canyon_wall_south / dy ) |
---|
| 1904 | cyn = cys + cwy |
---|
[2696] | 1905 | |
---|
[240] | 1906 | ELSE |
---|
[254] | 1907 | |
---|
| 1908 | message_string = 'no street canyon width given' |
---|
| 1909 | CALL message( 'init_grid', 'PA0204', 1, 2, 0, 6, 0 ) |
---|
| 1910 | |
---|
[240] | 1911 | ENDIF |
---|
| 1912 | |
---|
[2232] | 1913 | ch = MINLOC( ABS( zw - canyon_height ), 1 ) - 1 |
---|
| 1914 | IF ( ABS( zw(ch) - canyon_height ) == & |
---|
[1675] | 1915 | ABS( zw(ch+1) - canyon_height ) ) ch = ch + 1 |
---|
[240] | 1916 | dp_level_ind_b = ch |
---|
| 1917 | ! |
---|
| 1918 | !-- Street canyon size has to meet some requirements |
---|
[1322] | 1919 | IF ( canyon_width_x /= 9999999.9_wp ) THEN |
---|
[1353] | 1920 | IF ( ( cxl < 1 ) .OR. ( cxr > nx-1 ) .OR. ( cwx < 3 ) .OR. & |
---|
[2696] | 1921 | ( ch < 3 ) ) THEN |
---|
[1353] | 1922 | WRITE( message_string, * ) 'inconsistent canyon parameters:', & |
---|
[3046] | 1923 | '&cxl=', cxl, ' cxr=', cxr, & |
---|
[3045] | 1924 | ' cwx=', cwx, & |
---|
| 1925 | ' ch=', ch, ' nx=', nx, ' ny=', ny |
---|
[254] | 1926 | CALL message( 'init_grid', 'PA0205', 1, 2, 0, 6, 0 ) |
---|
[240] | 1927 | ENDIF |
---|
[1322] | 1928 | ELSEIF ( canyon_width_y /= 9999999.9_wp ) THEN |
---|
[1353] | 1929 | IF ( ( cys < 1 ) .OR. ( cyn > ny-1 ) .OR. ( cwy < 3 ) .OR. & |
---|
[2696] | 1930 | ( ch < 3 ) ) THEN |
---|
[1353] | 1931 | WRITE( message_string, * ) 'inconsistent canyon parameters:', & |
---|
[3046] | 1932 | '&cys=', cys, ' cyn=', cyn, & |
---|
[3045] | 1933 | ' cwy=', cwy, & |
---|
| 1934 | ' ch=', ch, ' nx=', nx, ' ny=', ny |
---|
[254] | 1935 | CALL message( 'init_grid', 'PA0206', 1, 2, 0, 6, 0 ) |
---|
[240] | 1936 | ENDIF |
---|
| 1937 | ENDIF |
---|
[1353] | 1938 | IF ( canyon_width_x /= 9999999.9_wp .AND. & |
---|
| 1939 | canyon_width_y /= 9999999.9_wp ) THEN |
---|
| 1940 | message_string = 'inconsistent canyon parameters:' // & |
---|
[3046] | 1941 | '&street canyon can only be oriented' // & |
---|
[3045] | 1942 | ' either in x- or in y-direction' |
---|
[254] | 1943 | CALL message( 'init_grid', 'PA0207', 1, 2, 0, 6, 0 ) |
---|
[240] | 1944 | ENDIF |
---|
| 1945 | |
---|
[2696] | 1946 | ALLOCATE( nzb_local(nysg:nyng,nxlg:nxrg) ) |
---|
[240] | 1947 | nzb_local = ch |
---|
[1322] | 1948 | IF ( canyon_width_x /= 9999999.9_wp ) THEN |
---|
[1968] | 1949 | IF ( cxl <= nxr .AND. cxr >= nxl ) & |
---|
| 1950 | nzb_local(:,MAX(nxl,cxl+1):MIN(nxr,cxr-1)) = 0 |
---|
[1322] | 1951 | ELSEIF ( canyon_width_y /= 9999999.9_wp ) THEN |
---|
[1968] | 1952 | IF ( cys <= nyn .AND. cyn >= nys ) & |
---|
| 1953 | nzb_local(MAX(nys,cys+1):MIN(nyn,cyn-1),:) = 0 |
---|
[240] | 1954 | ENDIF |
---|
[2232] | 1955 | ! |
---|
[2696] | 1956 | !-- Set bit array on basis of nzb_local |
---|
| 1957 | DO i = nxl, nxr |
---|
| 1958 | DO j = nys, nyn |
---|
| 1959 | topo(nzb_local(j,i)+1:nzt+1,j,i) = & |
---|
| 1960 | IBSET( topo(nzb_local(j,i)+1:nzt+1,j,i), 0 ) |
---|
[2232] | 1961 | ENDDO |
---|
| 1962 | ENDDO |
---|
[2696] | 1963 | DEALLOCATE( nzb_local ) |
---|
[1994] | 1964 | |
---|
[2696] | 1965 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
[2823] | 1966 | ! |
---|
| 1967 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
| 1968 | !-- boundary conditions for topography. |
---|
| 1969 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
| 1970 | IF ( nys == 0 ) THEN |
---|
| 1971 | DO i = 1, nbgp |
---|
| 1972 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
| 1973 | ENDDO |
---|
| 1974 | ENDIF |
---|
| 1975 | IF ( nyn == ny ) THEN |
---|
| 1976 | DO i = 1, nbgp |
---|
| 1977 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
| 1978 | ENDDO |
---|
| 1979 | ENDIF |
---|
| 1980 | ENDIF |
---|
| 1981 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
| 1982 | IF ( nxl == 0 ) THEN |
---|
| 1983 | DO i = 1, nbgp |
---|
| 1984 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
| 1985 | ENDDO |
---|
| 1986 | ENDIF |
---|
| 1987 | IF ( nxr == nx ) THEN |
---|
| 1988 | DO i = 1, nbgp |
---|
| 1989 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
| 1990 | ENDDO |
---|
| 1991 | ENDIF |
---|
| 1992 | ENDIF |
---|
[2232] | 1993 | |
---|
| 1994 | CASE ( 'tunnel' ) |
---|
| 1995 | |
---|
| 1996 | ! |
---|
| 1997 | !-- Tunnel height |
---|
| 1998 | IF ( tunnel_height == 9999999.9_wp ) THEN |
---|
| 1999 | th = zw( INT( 0.2 * nz) ) |
---|
| 2000 | ELSE |
---|
| 2001 | th = tunnel_height |
---|
| 2002 | ENDIF |
---|
| 2003 | ! |
---|
| 2004 | !-- Tunnel-wall depth |
---|
[2696] | 2005 | IF ( tunnel_wall_depth == 9999999.9_wp ) THEN |
---|
[3065] | 2006 | td = MAX ( dx, dy, dz(1) ) |
---|
[2232] | 2007 | ELSE |
---|
| 2008 | td = tunnel_wall_depth |
---|
| 2009 | ENDIF |
---|
| 2010 | ! |
---|
| 2011 | !-- Check for tunnel width |
---|
| 2012 | IF ( tunnel_width_x == 9999999.9_wp .AND. & |
---|
| 2013 | tunnel_width_y == 9999999.9_wp ) THEN |
---|
| 2014 | message_string = 'No tunnel width is given. ' |
---|
[2274] | 2015 | CALL message( 'init_grid', 'PA0280', 1, 2, 0, 6, 0 ) |
---|
[2232] | 2016 | ENDIF |
---|
| 2017 | IF ( tunnel_width_x /= 9999999.9_wp .AND. & |
---|
| 2018 | tunnel_width_y /= 9999999.9_wp ) THEN |
---|
| 2019 | message_string = 'Inconsistent tunnel parameters:' // & |
---|
| 2020 | 'tunnel can only be oriented' // & |
---|
| 2021 | 'either in x- or in y-direction.' |
---|
[2274] | 2022 | CALL message( 'init_grid', 'PA0281', 1, 2, 0, 6, 0 ) |
---|
[2232] | 2023 | ENDIF |
---|
| 2024 | ! |
---|
| 2025 | !-- Tunnel axis along y |
---|
| 2026 | IF ( tunnel_width_x /= 9999999.9_wp ) THEN |
---|
| 2027 | IF ( tunnel_width_x > ( nx + 1 ) * dx ) THEN |
---|
| 2028 | message_string = 'Tunnel width too large' |
---|
[2274] | 2029 | CALL message( 'init_grid', 'PA0282', 1, 2, 0, 6, 0 ) |
---|
[2232] | 2030 | ENDIF |
---|
| 2031 | |
---|
| 2032 | txs_out = INT( ( nx + 1 ) * 0.5_wp * dx - tunnel_width_x * 0.5_wp ) |
---|
| 2033 | txe_out = INT( ( nx + 1 ) * 0.5_wp * dx + tunnel_width_x * 0.5_wp ) |
---|
| 2034 | txs_in = INT( ( nx + 1 ) * 0.5_wp * dx - & |
---|
| 2035 | ( tunnel_width_x * 0.5_wp - td ) ) |
---|
| 2036 | txe_in = INT( ( nx + 1 ) * 0.5_wp * dx + & |
---|
[2696] | 2037 | ( tunnel_width_x * 0.5_wp - td ) ) |
---|
[2232] | 2038 | |
---|
| 2039 | tys_out = INT( ( ny + 1 ) * 0.5_wp * dy - tunnel_length * 0.5_wp ) |
---|
| 2040 | tye_out = INT( ( ny + 1 ) * 0.5_wp * dy + tunnel_length * 0.5_wp ) |
---|
| 2041 | tys_in = tys_out |
---|
| 2042 | tye_in = tye_out |
---|
| 2043 | ENDIF |
---|
[2696] | 2044 | IF ( tunnel_width_x /= 9999999.9_wp .AND. & |
---|
| 2045 | tunnel_width_x - 2.0_wp * td <= 2.0_wp * dx ) & |
---|
| 2046 | THEN |
---|
[2232] | 2047 | message_string = 'Tunnel width too small' |
---|
[2274] | 2048 | CALL message( 'init_grid', 'PA0175', 1, 2, 0, 6, 0 ) |
---|
[2232] | 2049 | ENDIF |
---|
| 2050 | IF ( tunnel_width_y /= 9999999.9_wp .AND. & |
---|
[2696] | 2051 | tunnel_width_y - 2.0_wp * td <= 2.0_wp * dy ) & |
---|
| 2052 | THEN |
---|
[2232] | 2053 | message_string = 'Tunnel width too small' |
---|
[2274] | 2054 | CALL message( 'init_grid', 'PA0455', 1, 2, 0, 6, 0 ) |
---|
[2232] | 2055 | ENDIF |
---|
| 2056 | ! |
---|
| 2057 | !-- Tunnel axis along x |
---|
| 2058 | IF ( tunnel_width_y /= 9999999.9_wp ) THEN |
---|
| 2059 | IF ( tunnel_width_y > ( ny + 1 ) * dy ) THEN |
---|
| 2060 | message_string = 'Tunnel width too large' |
---|
[2274] | 2061 | CALL message( 'init_grid', 'PA0456', 1, 2, 0, 6, 0 ) |
---|
[2232] | 2062 | ENDIF |
---|
| 2063 | |
---|
| 2064 | txs_out = INT( ( nx + 1 ) * 0.5_wp * dx - tunnel_length * 0.5_wp ) |
---|
| 2065 | txe_out = INT( ( nx + 1 ) * 0.5_wp * dx + tunnel_length * 0.5_wp ) |
---|
| 2066 | txs_in = txs_out |
---|
| 2067 | txe_in = txe_out |
---|
| 2068 | |
---|
| 2069 | tys_out = INT( ( ny + 1 ) * 0.5_wp * dy - tunnel_width_y * 0.5_wp ) |
---|
| 2070 | tye_out = INT( ( ny + 1 ) * 0.5_wp * dy + tunnel_width_y * 0.5_wp ) |
---|
| 2071 | tys_in = INT( ( ny + 1 ) * 0.5_wp * dy - & |
---|
[2696] | 2072 | ( tunnel_width_y * 0.5_wp - td ) ) |
---|
[2232] | 2073 | tye_in = INT( ( ny + 1 ) * 0.5_wp * dy + & |
---|
| 2074 | ( tunnel_width_y * 0.5_wp - td ) ) |
---|
| 2075 | ENDIF |
---|
| 2076 | |
---|
[2696] | 2077 | topo = 0 |
---|
[2232] | 2078 | DO i = nxl, nxr |
---|
| 2079 | DO j = nys, nyn |
---|
| 2080 | ! |
---|
| 2081 | !-- Use heaviside function to model outer tunnel surface |
---|
| 2082 | hv_out = th * 0.5_wp * & |
---|
| 2083 | ( ( SIGN( 1.0_wp, i * dx - txs_out ) + 1.0_wp ) & |
---|
| 2084 | - ( SIGN( 1.0_wp, i * dx - txe_out ) + 1.0_wp ) ) |
---|
| 2085 | |
---|
| 2086 | hv_out = hv_out * 0.5_wp * & |
---|
| 2087 | ( ( SIGN( 1.0_wp, j * dy - tys_out ) + 1.0_wp ) & |
---|
| 2088 | - ( SIGN( 1.0_wp, j * dy - tye_out ) + 1.0_wp ) ) |
---|
[2696] | 2089 | ! |
---|
[2232] | 2090 | !-- Use heaviside function to model inner tunnel surface |
---|
| 2091 | hv_in = ( th - td ) * 0.5_wp * & |
---|
| 2092 | ( ( SIGN( 1.0_wp, i * dx - txs_in ) + 1.0_wp ) & |
---|
| 2093 | - ( SIGN( 1.0_wp, i * dx - txe_in ) + 1.0_wp ) ) |
---|
| 2094 | |
---|
| 2095 | hv_in = hv_in * 0.5_wp * & |
---|
| 2096 | ( ( SIGN( 1.0_wp, j * dy - tys_in ) + 1.0_wp ) & |
---|
| 2097 | - ( SIGN( 1.0_wp, j * dy - tye_in ) + 1.0_wp ) ) |
---|
| 2098 | ! |
---|
| 2099 | !-- Set flags at x-y-positions without any tunnel surface |
---|
| 2100 | IF ( hv_out - hv_in == 0.0_wp ) THEN |
---|
[2696] | 2101 | topo(nzb+1:nzt+1,j,i) = IBSET( topo(nzb+1:nzt+1,j,i), 0 ) |
---|
[2232] | 2102 | ! |
---|
| 2103 | !-- Set flags at x-y-positions with tunnel surfaces |
---|
| 2104 | ELSE |
---|
| 2105 | DO k = nzb + 1, nzt + 1 |
---|
| 2106 | ! |
---|
| 2107 | !-- Inner tunnel |
---|
| 2108 | IF ( hv_out - hv_in == th ) THEN |
---|
| 2109 | IF ( zw(k) <= hv_out ) THEN |
---|
[2696] | 2110 | topo(k,j,i) = IBCLR( topo(k,j,i), 0 ) |
---|
[2232] | 2111 | ELSE |
---|
[2696] | 2112 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
[2232] | 2113 | ENDIF |
---|
| 2114 | ENDIF |
---|
| 2115 | ! |
---|
| 2116 | !-- Lateral tunnel walls |
---|
| 2117 | IF ( hv_out - hv_in == td ) THEN |
---|
| 2118 | IF ( zw(k) <= hv_in ) THEN |
---|
[2696] | 2119 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
[2232] | 2120 | ELSEIF ( zw(k) > hv_in .AND. zw(k) <= hv_out ) THEN |
---|
[2696] | 2121 | topo(k,j,i) = IBCLR( topo(k,j,i), 0 ) |
---|
[2232] | 2122 | ELSEIF ( zw(k) > hv_out ) THEN |
---|
[2696] | 2123 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
[2232] | 2124 | ENDIF |
---|
| 2125 | ENDIF |
---|
| 2126 | ENDDO |
---|
| 2127 | ENDIF |
---|
| 2128 | ENDDO |
---|
| 2129 | ENDDO |
---|
| 2130 | |
---|
[2696] | 2131 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
[2823] | 2132 | ! |
---|
| 2133 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
| 2134 | !-- boundary conditions for topography. |
---|
| 2135 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
| 2136 | IF ( nys == 0 ) THEN |
---|
| 2137 | DO i = 1, nbgp |
---|
| 2138 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
| 2139 | ENDDO |
---|
| 2140 | ENDIF |
---|
| 2141 | IF ( nyn == ny ) THEN |
---|
| 2142 | DO i = 1, nbgp |
---|
| 2143 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
| 2144 | ENDDO |
---|
| 2145 | ENDIF |
---|
| 2146 | ENDIF |
---|
| 2147 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
| 2148 | IF ( nxl == 0 ) THEN |
---|
| 2149 | DO i = 1, nbgp |
---|
| 2150 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
| 2151 | ENDDO |
---|
| 2152 | ENDIF |
---|
| 2153 | IF ( nxr == nx ) THEN |
---|
| 2154 | DO i = 1, nbgp |
---|
| 2155 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
| 2156 | ENDDO |
---|
| 2157 | ENDIF |
---|
| 2158 | ENDIF |
---|
[2232] | 2159 | |
---|
[1] | 2160 | CASE ( 'read_from_file' ) |
---|
| 2161 | ! |
---|
[2696] | 2162 | !-- Note, topography information have been already read. |
---|
| 2163 | !-- If required, further process topography, i.e. reference buildings on |
---|
| 2164 | !-- top of orography and set temporary 3D topography array, which is |
---|
| 2165 | !-- used later to set grid flags. Calling of this rouinte is also |
---|
| 2166 | !-- required in case of ASCII input, even though no distinction between |
---|
| 2167 | !-- terrain- and building height is made in this case. |
---|
| 2168 | CALL process_topography( topo ) |
---|
[1968] | 2169 | ! |
---|
[2696] | 2170 | !-- Filter holes resolved by only one grid-point |
---|
| 2171 | CALL filter_topography( topo ) |
---|
[1968] | 2172 | ! |
---|
[2696] | 2173 | !-- Exchange ghost-points, as well as add cyclic or Neumann boundary |
---|
| 2174 | !-- conditions. |
---|
| 2175 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
[2232] | 2176 | ! |
---|
[2696] | 2177 | !-- Set lateral boundary conditions for topography on all ghost layers |
---|
[1968] | 2178 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
[2550] | 2179 | IF ( nys == 0 ) THEN |
---|
[2696] | 2180 | DO i = 1, nbgp |
---|
| 2181 | topo(:,nys-i,:) = topo(:,nys,:) |
---|
| 2182 | ENDDO |
---|
[2550] | 2183 | ENDIF |
---|
[2696] | 2184 | IF ( nyn == ny ) THEN |
---|
| 2185 | DO i = 1, nbgp |
---|
| 2186 | topo(:,nyn+i,:) = topo(:,nyn,:) |
---|
| 2187 | ENDDO |
---|
| 2188 | ENDIF |
---|
[1942] | 2189 | ENDIF |
---|
[1910] | 2190 | |
---|
[1968] | 2191 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
[2550] | 2192 | IF ( nxl == 0 ) THEN |
---|
[2696] | 2193 | DO i = 1, nbgp |
---|
| 2194 | topo(:,:,nxl-i) = topo(:,:,nxl) |
---|
[2232] | 2195 | ENDDO |
---|
[2696] | 2196 | ENDIF |
---|
| 2197 | IF ( nxr == nx ) THEN |
---|
| 2198 | DO i = 1, nbgp |
---|
| 2199 | topo(:,:,nxr+i) = topo(:,:,nxr) |
---|
| 2200 | ENDDO |
---|
| 2201 | ENDIF |
---|
[2232] | 2202 | ENDIF |
---|
| 2203 | |
---|
[667] | 2204 | |
---|
[1] | 2205 | CASE DEFAULT |
---|
[2696] | 2206 | ! |
---|
[1] | 2207 | !-- The DEFAULT case is reached either if the parameter topography |
---|
[217] | 2208 | !-- contains a wrong character string or if the user has defined a special |
---|
[1] | 2209 | !-- case in the user interface. There, the subroutine user_init_grid |
---|
| 2210 | !-- checks which of these two conditions applies. |
---|
[2696] | 2211 | CALL user_init_grid( topo ) |
---|
| 2212 | CALL filter_topography( topo ) |
---|
[1] | 2213 | |
---|
| 2214 | END SELECT |
---|
| 2215 | ! |
---|
| 2216 | !-- Consistency checks and index array initialization are only required for |
---|
[2696] | 2217 | !-- non-flat topography. |
---|
[1] | 2218 | IF ( TRIM( topography ) /= 'flat' ) THEN |
---|
| 2219 | ! |
---|
[2232] | 2220 | !-- In case of non-flat topography, check whether the convention how to |
---|
| 2221 | !-- define the topography grid has been set correctly, or whether the default |
---|
| 2222 | !-- is applicable. If this is not possible, abort. |
---|
| 2223 | IF ( TRIM( topography_grid_convention ) == ' ' ) THEN |
---|
| 2224 | IF ( TRIM( topography ) /= 'single_building' .AND. & |
---|
| 2225 | TRIM( topography ) /= 'single_street_canyon' .AND. & |
---|
| 2226 | TRIM( topography ) /= 'tunnel' .AND. & |
---|
| 2227 | TRIM( topography ) /= 'read_from_file') THEN |
---|
| 2228 | !-- The default value is not applicable here, because it is only valid |
---|
[3045] | 2229 | !-- for the four standard cases 'single_building', |
---|
| 2230 | !-- 'single_street_canyon', 'tunnel' and 'read_from_file' |
---|
[2232] | 2231 | !-- defined in init_grid. |
---|
| 2232 | WRITE( message_string, * ) & |
---|
[2696] | 2233 | 'The value for "topography_grid_convention" ', & |
---|
[3046] | 2234 | 'is not set. Its default value is & only valid for ', & |
---|
[3045] | 2235 | '"topography" = ''single_building'', ''tunnel'' ', & |
---|
[3046] | 2236 | '''single_street_canyon'' & or ''read_from_file''.', & |
---|
| 2237 | '& Choose ''cell_edge'' or ''cell_center''.' |
---|
[2232] | 2238 | CALL message( 'init_grid', 'PA0239', 1, 2, 0, 6, 0 ) |
---|
| 2239 | ELSE |
---|
| 2240 | !-- The default value is applicable here. |
---|
| 2241 | !-- Set convention according to topography. |
---|
| 2242 | IF ( TRIM( topography ) == 'single_building' .OR. & |
---|
| 2243 | TRIM( topography ) == 'single_street_canyon' ) THEN |
---|
| 2244 | topography_grid_convention = 'cell_edge' |
---|
| 2245 | ELSEIF ( TRIM( topography ) == 'read_from_file' .OR. & |
---|
| 2246 | TRIM( topography ) == 'tunnel') THEN |
---|
| 2247 | topography_grid_convention = 'cell_center' |
---|
| 2248 | ENDIF |
---|
| 2249 | ENDIF |
---|
| 2250 | ELSEIF ( TRIM( topography_grid_convention ) /= 'cell_edge' .AND. & |
---|
| 2251 | TRIM( topography_grid_convention ) /= 'cell_center' ) THEN |
---|
| 2252 | WRITE( message_string, * ) & |
---|
[2696] | 2253 | 'The value for "topography_grid_convention" is ', & |
---|
[3046] | 2254 | 'not recognized.& Choose ''cell_edge'' or ''cell_center''.' |
---|
[2232] | 2255 | CALL message( 'init_grid', 'PA0240', 1, 2, 0, 6, 0 ) |
---|
| 2256 | ENDIF |
---|
[1] | 2257 | |
---|
[2169] | 2258 | |
---|
[217] | 2259 | IF ( topography_grid_convention == 'cell_edge' ) THEN |
---|
[134] | 2260 | ! |
---|
[217] | 2261 | !-- The array nzb_local as defined using the 'cell_edge' convention |
---|
| 2262 | !-- describes the actual total size of topography which is defined at the |
---|
| 2263 | !-- cell edges where u=0 on the topography walls in x-direction and v=0 |
---|
| 2264 | !-- on the topography walls in y-direction. However, PALM uses individual |
---|
| 2265 | !-- arrays nzb_u|v|w|s_inner|outer that are based on nzb_s_inner. |
---|
| 2266 | !-- Therefore, the extent of topography in nzb_local is now reduced by |
---|
| 2267 | !-- 1dx at the E topography walls and by 1dy at the N topography walls |
---|
[1968] | 2268 | !-- to form the basis for nzb_s_inner. |
---|
| 2269 | !-- Note, the reverse memory access (i-j instead of j-i) is absolutely |
---|
| 2270 | !-- required at this point. |
---|
| 2271 | DO j = nys+1, nyn+1 |
---|
| 2272 | DO i = nxl-1, nxr |
---|
[2232] | 2273 | DO k = nzb, nzt+1 |
---|
[2696] | 2274 | IF ( BTEST( topo(k,j,i), 0 ) .OR. & |
---|
| 2275 | BTEST( topo(k,j,i+1), 0 ) ) & |
---|
| 2276 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
[2232] | 2277 | ENDDO |
---|
| 2278 | ENDDO |
---|
| 2279 | ENDDO |
---|
[2696] | 2280 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
[2232] | 2281 | |
---|
| 2282 | DO i = nxl, nxr+1 |
---|
| 2283 | DO j = nys-1, nyn |
---|
| 2284 | DO k = nzb, nzt+1 |
---|
[2696] | 2285 | IF ( BTEST( topo(k,j,i), 0 ) .OR. & |
---|
| 2286 | BTEST( topo(k,j+1,i), 0 ) ) & |
---|
| 2287 | topo(k,j,i) = IBSET( topo(k,j,i), 0 ) |
---|
[2232] | 2288 | ENDDO |
---|
| 2289 | ENDDO |
---|
| 2290 | ENDDO |
---|
[2696] | 2291 | CALL exchange_horiz_int( topo, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
[2232] | 2292 | |
---|
[217] | 2293 | ENDIF |
---|
[2696] | 2294 | ENDIF |
---|
[2232] | 2295 | |
---|
[1] | 2296 | |
---|
[2696] | 2297 | END SUBROUTINE init_topo |
---|
[1] | 2298 | |
---|
[2696] | 2299 | SUBROUTINE set_topo_flags(topo) |
---|
[1] | 2300 | |
---|
[2696] | 2301 | USE control_parameters, & |
---|
| 2302 | ONLY: bc_lr_cyc, bc_ns_cyc, constant_flux_layer, land_surface, & |
---|
[4189] | 2303 | scalar_advec, topography, use_surface_fluxes, use_top_fluxes, & |
---|
| 2304 | urban_surface |
---|
[1] | 2305 | |
---|
[2696] | 2306 | USE indices, & |
---|
[3241] | 2307 | ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nzb, & |
---|
[4168] | 2308 | nzt, topo_top_ind, wall_flags_0 |
---|
[1] | 2309 | |
---|
[2696] | 2310 | USE kinds |
---|
[1] | 2311 | |
---|
[2696] | 2312 | IMPLICIT NONE |
---|
[1804] | 2313 | |
---|
[2696] | 2314 | INTEGER(iwp) :: i !< index variable along x |
---|
[4168] | 2315 | INTEGER(iwp) :: ibit !< integer bit position of topgraphy masking array |
---|
[2696] | 2316 | INTEGER(iwp) :: j !< index variable along y |
---|
| 2317 | INTEGER(iwp) :: k !< index variable along z |
---|
[1] | 2318 | |
---|
[2696] | 2319 | INTEGER(iwp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: topo !< input array for 3D topography and dummy array for setting "outer"-flags |
---|
[2232] | 2320 | |
---|
[2696] | 2321 | ALLOCATE( wall_flags_0(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
| 2322 | wall_flags_0 = 0 |
---|
[2232] | 2323 | ! |
---|
[2696] | 2324 | !-- Set-up topography flags. First, set flags only for s, u, v and w-grid. |
---|
| 2325 | !-- Further special flags will be set in following loops. |
---|
[2232] | 2326 | DO i = nxl, nxr |
---|
| 2327 | DO j = nys, nyn |
---|
| 2328 | DO k = nzb, nzt+1 |
---|
| 2329 | ! |
---|
| 2330 | !-- scalar grid |
---|
[2696] | 2331 | IF ( BTEST( topo(k,j,i), 0 ) ) & |
---|
[2232] | 2332 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 0 ) |
---|
| 2333 | ! |
---|
[2696] | 2334 | !-- u grid |
---|
| 2335 | IF ( BTEST( topo(k,j,i), 0 ) .AND. & |
---|
| 2336 | BTEST( topo(k,j,i-1), 0 ) ) & |
---|
| 2337 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 1 ) |
---|
| 2338 | ! |
---|
[2232] | 2339 | !-- v grid |
---|
[2696] | 2340 | IF ( BTEST( topo(k,j,i), 0 ) .AND. & |
---|
| 2341 | BTEST( topo(k,j-1,i), 0 ) ) & |
---|
| 2342 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 2 ) |
---|
| 2343 | |
---|
[2232] | 2344 | ENDDO |
---|
[1] | 2345 | |
---|
[2232] | 2346 | DO k = nzb, nzt |
---|
[1] | 2347 | ! |
---|
[2232] | 2348 | !-- w grid |
---|
[2696] | 2349 | IF ( BTEST( topo(k,j,i), 0 ) .AND. & |
---|
| 2350 | BTEST( topo(k+1,j,i), 0 ) ) & |
---|
[2232] | 2351 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 3 ) |
---|
| 2352 | ENDDO |
---|
| 2353 | wall_flags_0(nzt+1,j,i) = IBSET( wall_flags_0(nzt+1,j,i), 3 ) |
---|
| 2354 | |
---|
| 2355 | ENDDO |
---|
| 2356 | ENDDO |
---|
[2696] | 2357 | |
---|
[2867] | 2358 | CALL exchange_horiz_int( wall_flags_0, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
[1] | 2359 | ! |
---|
[4115] | 2360 | !-- Set outer array for scalars to mask near-surface grid points. Note, on |
---|
| 2361 | !-- basis of flag 24 futher flags will be derived which are used to control |
---|
| 2362 | !-- production of subgrid TKE production near walls. |
---|
[2696] | 2363 | DO i = nxl, nxr |
---|
| 2364 | DO j = nys, nyn |
---|
[2232] | 2365 | DO k = nzb, nzt+1 |
---|
[4115] | 2366 | IF ( BTEST( wall_flags_0(k,j-1,i), 0 ) .AND. & |
---|
| 2367 | BTEST( wall_flags_0(k,j+1,i), 0 ) .AND. & |
---|
| 2368 | BTEST( wall_flags_0(k,j,i-1), 0 ) .AND. & |
---|
| 2369 | BTEST( wall_flags_0(k,j,i+1), 0 ) .AND. & |
---|
| 2370 | BTEST( wall_flags_0(k,j-1,i-1), 0 ) .AND. & |
---|
| 2371 | BTEST( wall_flags_0(k,j+1,i-1), 0 ) .AND. & |
---|
| 2372 | BTEST( wall_flags_0(k,j-1,i+1), 0 ) .AND. & |
---|
| 2373 | BTEST( wall_flags_0(k,j+1,i+1), 0 ) ) & |
---|
[2696] | 2374 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 24 ) |
---|
[2232] | 2375 | ENDDO |
---|
| 2376 | ENDDO |
---|
| 2377 | ENDDO |
---|
[1] | 2378 | ! |
---|
[2232] | 2379 | !-- Set further special flags |
---|
| 2380 | DO i = nxl, nxr |
---|
| 2381 | DO j = nys, nyn |
---|
| 2382 | DO k = nzb, nzt+1 |
---|
[1] | 2383 | ! |
---|
[2232] | 2384 | !-- scalar grid, former nzb_diff_s_inner. |
---|
| 2385 | !-- Note, use this flag also to mask topography in diffusion_u and |
---|
| 2386 | !-- diffusion_v along the vertical direction. In case of |
---|
| 2387 | !-- use_surface_fluxes, fluxes are calculated via MOST, else, simple |
---|
| 2388 | !-- gradient approach is applied. Please note, in case of u- and v- |
---|
| 2389 | !-- diffuison, a small error is made at edges (on the east side for u, |
---|
| 2390 | !-- at the north side for v), since topography on scalar grid point |
---|
| 2391 | !-- is used instead of topography on u/v-grid. As number of topography grid |
---|
| 2392 | !-- points on uv-grid is different than s-grid, different number of |
---|
| 2393 | !-- surface elements would be required. In order to avoid this, |
---|
| 2394 | !-- treat edges (u(k,j,i+1)) simply by a gradient approach, i.e. these |
---|
| 2395 | !-- points are not masked within diffusion_u. Tests had shown that the |
---|
| 2396 | !-- effect on the flow is negligible. |
---|
| 2397 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
| 2398 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) ) & |
---|
| 2399 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 8 ) |
---|
| 2400 | ELSE |
---|
| 2401 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 8 ) |
---|
| 2402 | ENDIF |
---|
[1] | 2403 | |
---|
[2232] | 2404 | ENDDO |
---|
| 2405 | ! |
---|
| 2406 | !-- Special flag to control vertical diffusion at model top - former |
---|
| 2407 | !-- nzt_diff |
---|
| 2408 | wall_flags_0(:,j,i) = IBSET( wall_flags_0(:,j,i), 9 ) |
---|
| 2409 | IF ( use_top_fluxes ) & |
---|
[2478] | 2410 | wall_flags_0(nzt+1,j,i) = IBCLR( wall_flags_0(nzt+1,j,i), 9 ) |
---|
[1] | 2411 | |
---|
[2696] | 2412 | |
---|
[2232] | 2413 | DO k = nzb+1, nzt |
---|
| 2414 | ! |
---|
| 2415 | !-- Special flag on u grid, former nzb_u_inner + 1, required |
---|
| 2416 | !-- for disturb_field and initialization. Do not disturb directly at |
---|
| 2417 | !-- topography, as well as initialize u with zero one grid point outside |
---|
| 2418 | !-- of topography. |
---|
| 2419 | IF ( BTEST( wall_flags_0(k-1,j,i), 1 ) .AND. & |
---|
| 2420 | BTEST( wall_flags_0(k,j,i), 1 ) .AND. & |
---|
| 2421 | BTEST( wall_flags_0(k+1,j,i), 1 ) ) & |
---|
| 2422 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 20 ) |
---|
| 2423 | ! |
---|
| 2424 | !-- Special flag on v grid, former nzb_v_inner + 1, required |
---|
| 2425 | !-- for disturb_field and initialization. Do not disturb directly at |
---|
| 2426 | !-- topography, as well as initialize v with zero one grid point outside |
---|
| 2427 | !-- of topography. |
---|
| 2428 | IF ( BTEST( wall_flags_0(k-1,j,i), 2 ) .AND. & |
---|
| 2429 | BTEST( wall_flags_0(k,j,i), 2 ) .AND. & |
---|
| 2430 | BTEST( wall_flags_0(k+1,j,i), 2 ) ) & |
---|
| 2431 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 21 ) |
---|
| 2432 | ! |
---|
| 2433 | !-- Special flag on scalar grid, former nzb_s_inner+1. Used for |
---|
| 2434 | !-- lpm_sgs_tke |
---|
| 2435 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) .AND. & |
---|
| 2436 | BTEST( wall_flags_0(k-1,j,i), 0 ) .AND. & |
---|
| 2437 | BTEST( wall_flags_0(k+1,j,i), 0 ) ) & |
---|
| 2438 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 25 ) |
---|
| 2439 | ! |
---|
| 2440 | !-- Special flag on scalar grid, nzb_diff_s_outer - 1, required in |
---|
| 2441 | !-- in production_e |
---|
| 2442 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
| 2443 | IF ( BTEST( wall_flags_0(k,j,i), 24 ) .AND. & |
---|
| 2444 | BTEST( wall_flags_0(k-1,j,i), 24 ) .AND. & |
---|
| 2445 | BTEST( wall_flags_0(k+1,j,i), 0 ) ) & |
---|
| 2446 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 29 ) |
---|
| 2447 | ELSE |
---|
| 2448 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) ) & |
---|
| 2449 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 29 ) |
---|
[1] | 2450 | ENDIF |
---|
[2232] | 2451 | ! |
---|
| 2452 | !-- Special flag on scalar grid, nzb_diff_s_outer - 1, required in |
---|
| 2453 | !-- in production_e |
---|
| 2454 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
| 2455 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) .AND. & |
---|
| 2456 | BTEST( wall_flags_0(k-1,j,i), 0 ) .AND. & |
---|
| 2457 | BTEST( wall_flags_0(k+1,j,i), 0 ) ) & |
---|
| 2458 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 30 ) |
---|
| 2459 | ELSE |
---|
| 2460 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) ) & |
---|
| 2461 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 30 ) |
---|
| 2462 | ENDIF |
---|
| 2463 | ENDDO |
---|
| 2464 | ! |
---|
| 2465 | !-- Flags indicating downward facing walls |
---|
| 2466 | DO k = nzb+1, nzt |
---|
| 2467 | ! |
---|
| 2468 | !-- Scalar grid |
---|
| 2469 | IF ( BTEST( wall_flags_0(k-1,j,i), 0 ) .AND. & |
---|
| 2470 | .NOT. BTEST( wall_flags_0(k,j,i), 0 ) ) & |
---|
[2696] | 2471 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 13 ) |
---|
[2232] | 2472 | ! |
---|
| 2473 | !-- Downward facing wall on u grid |
---|
| 2474 | IF ( BTEST( wall_flags_0(k-1,j,i), 1 ) .AND. & |
---|
| 2475 | .NOT. BTEST( wall_flags_0(k,j,i), 1 ) ) & |
---|
| 2476 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 15 ) |
---|
| 2477 | ! |
---|
| 2478 | !-- Downward facing wall on v grid |
---|
| 2479 | IF ( BTEST( wall_flags_0(k-1,j,i), 2 ) .AND. & |
---|
| 2480 | .NOT. BTEST( wall_flags_0(k,j,i), 2 ) ) & |
---|
| 2481 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 17 ) |
---|
| 2482 | ! |
---|
| 2483 | !-- Downward facing wall on w grid |
---|
| 2484 | IF ( BTEST( wall_flags_0(k-1,j,i), 3 ) .AND. & |
---|
| 2485 | .NOT. BTEST( wall_flags_0(k,j,i), 3 ) ) & |
---|
| 2486 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 19 ) |
---|
| 2487 | ENDDO |
---|
| 2488 | ! |
---|
| 2489 | !-- Flags indicating upward facing walls |
---|
| 2490 | DO k = nzb, nzt |
---|
| 2491 | ! |
---|
| 2492 | !-- Upward facing wall on scalar grid |
---|
| 2493 | IF ( .NOT. BTEST( wall_flags_0(k,j,i), 0 ) .AND. & |
---|
| 2494 | BTEST( wall_flags_0(k+1,j,i), 0 ) ) & |
---|
| 2495 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 12 ) |
---|
| 2496 | ! |
---|
| 2497 | !-- Upward facing wall on u grid |
---|
| 2498 | IF ( .NOT. BTEST( wall_flags_0(k,j,i), 1 ) .AND. & |
---|
| 2499 | BTEST( wall_flags_0(k+1,j,i), 1 ) ) & |
---|
| 2500 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 14 ) |
---|
[1] | 2501 | |
---|
[2696] | 2502 | ! |
---|
[2232] | 2503 | !-- Upward facing wall on v grid |
---|
| 2504 | IF ( .NOT. BTEST( wall_flags_0(k,j,i), 2 ) .AND. & |
---|
| 2505 | BTEST( wall_flags_0(k+1,j,i), 2 ) ) & |
---|
| 2506 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 16 ) |
---|
[2696] | 2507 | |
---|
[2232] | 2508 | ! |
---|
| 2509 | !-- Upward facing wall on w grid |
---|
| 2510 | IF ( .NOT. BTEST( wall_flags_0(k,j,i), 3 ) .AND. & |
---|
| 2511 | BTEST( wall_flags_0(k+1,j,i), 3 ) ) & |
---|
| 2512 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 18 ) |
---|
| 2513 | ! |
---|
| 2514 | !-- Special flag on scalar grid, former nzb_s_inner |
---|
| 2515 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) .OR. & |
---|
| 2516 | BTEST( wall_flags_0(k,j,i), 12 ) .OR. & |
---|
| 2517 | BTEST( wall_flags_0(k,j,i), 13 ) ) & |
---|
[2696] | 2518 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 22 ) |
---|
[2232] | 2519 | ! |
---|
| 2520 | !-- Special flag on scalar grid, nzb_diff_s_inner - 1, required for |
---|
| 2521 | !-- flow_statistics |
---|
| 2522 | IF ( constant_flux_layer .OR. use_surface_fluxes ) THEN |
---|
| 2523 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) .AND. & |
---|
| 2524 | BTEST( wall_flags_0(k+1,j,i), 0 ) ) & |
---|
[2696] | 2525 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 23 ) |
---|
[2232] | 2526 | ELSE |
---|
| 2527 | IF ( BTEST( wall_flags_0(k,j,i), 22 ) ) & |
---|
| 2528 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 23 ) |
---|
[1] | 2529 | ENDIF |
---|
[2696] | 2530 | |
---|
[1] | 2531 | |
---|
[2232] | 2532 | ENDDO |
---|
| 2533 | wall_flags_0(nzt+1,j,i) = IBSET( wall_flags_0(nzt+1,j,i), 22 ) |
---|
| 2534 | wall_flags_0(nzt+1,j,i) = IBSET( wall_flags_0(nzt+1,j,i), 23 ) |
---|
[4109] | 2535 | ! |
---|
| 2536 | !-- Set flags indicating that topography is close by in horizontal |
---|
| 2537 | !-- direction, i.e. flags that infold the topography. These will be used |
---|
| 2538 | !-- to set advection flags for passive scalars, where due to large |
---|
| 2539 | !-- gradients near buildings stationary numerical oscillations can produce |
---|
| 2540 | !-- unrealistically high concentrations. This is only necessary if |
---|
| 2541 | !-- WS-scheme is applied for scalar advection. Note, these flags will be |
---|
| 2542 | !-- only used for passive scalars such as chemical species or aerosols. |
---|
| 2543 | IF ( scalar_advec == 'ws-scheme' ) THEN |
---|
| 2544 | DO k = nzb, nzt |
---|
| 2545 | IF ( BTEST( wall_flags_0(k,j,i), 0 ) .AND. ( & |
---|
| 2546 | ANY( .NOT. BTEST( wall_flags_0(k,j-3:j+3,i-1), 0 ) ) .OR.& |
---|
| 2547 | ANY( .NOT. BTEST( wall_flags_0(k,j-3:j+3,i-2), 0 ) ) .OR.& |
---|
| 2548 | ANY( .NOT. BTEST( wall_flags_0(k,j-3:j+3,i-3), 0 ) ) .OR.& |
---|
| 2549 | ANY( .NOT. BTEST( wall_flags_0(k,j-3:j+3,i+1), 0 ) ) .OR.& |
---|
| 2550 | ANY( .NOT. BTEST( wall_flags_0(k,j-3:j+3,i+2), 0 ) ) .OR.& |
---|
| 2551 | ANY( .NOT. BTEST( wall_flags_0(k,j-3:j+3,i+3), 0 ) ) .OR.& |
---|
| 2552 | ANY( .NOT. BTEST( wall_flags_0(k,j-1,i-3:i+3), 0 ) ) .OR.& |
---|
| 2553 | ANY( .NOT. BTEST( wall_flags_0(k,j-2,i-3:i+3), 0 ) ) .OR.& |
---|
| 2554 | ANY( .NOT. BTEST( wall_flags_0(k,j-3,i-3:i+3), 0 ) ) .OR.& |
---|
| 2555 | ANY( .NOT. BTEST( wall_flags_0(k,j+1,i-3:i+3), 0 ) ) .OR.& |
---|
| 2556 | ANY( .NOT. BTEST( wall_flags_0(k,j+2,i-3:i+3), 0 ) ) .OR.& |
---|
| 2557 | ANY( .NOT. BTEST( wall_flags_0(k,j+3,i-3:i+3), 0 ) ) & |
---|
| 2558 | ) ) & |
---|
| 2559 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 31 ) |
---|
| 2560 | |
---|
| 2561 | ENDDO |
---|
| 2562 | ENDIF |
---|
[2232] | 2563 | ENDDO |
---|
| 2564 | ENDDO |
---|
| 2565 | ! |
---|
[2696] | 2566 | !-- Finally, set identification flags indicating natural terrain or buildings. |
---|
[4189] | 2567 | !-- Natural terrain grid points. Information on the type of the surface is |
---|
| 2568 | !-- stored in bit 1 of 3D Integer array topo. However, this bit is only set |
---|
| 2569 | !-- when topography is read from file. In order to run the land-surface model |
---|
| 2570 | !-- also without topography information, set bit 1 explicitely in this case. |
---|
[2696] | 2571 | IF ( land_surface ) THEN |
---|
| 2572 | ! |
---|
[4189] | 2573 | !-- If no topography is initialized, the land-surface is at k = nzb. |
---|
| 2574 | IF ( TRIM( topography ) /= 'read_from_file' ) THEN |
---|
| 2575 | wall_flags_0(nzb,:,:) = IBSET( wall_flags_0(nzb,:,:), 5 ) |
---|
| 2576 | ELSE |
---|
| 2577 | DO i = nxl, nxr |
---|
| 2578 | DO j = nys, nyn |
---|
| 2579 | DO k = nzb, nzt+1 |
---|
| 2580 | ! |
---|
| 2581 | !-- Natural terrain grid point |
---|
| 2582 | IF ( BTEST( topo(k,j,i), 1 ) ) & |
---|
| 2583 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 5 ) |
---|
| 2584 | ENDDO |
---|
[2696] | 2585 | ENDDO |
---|
| 2586 | ENDDO |
---|
[4189] | 2587 | ENDIF |
---|
[2696] | 2588 | ENDIF |
---|
| 2589 | ! |
---|
| 2590 | !-- Building grid points. |
---|
| 2591 | IF ( urban_surface ) THEN |
---|
| 2592 | DO i = nxl, nxr |
---|
| 2593 | DO j = nys, nyn |
---|
| 2594 | DO k = nzb, nzt+1 |
---|
| 2595 | IF ( BTEST( topo(k,j,i), 2 ) ) & |
---|
| 2596 | wall_flags_0(k,j,i) = IBSET( wall_flags_0(k,j,i), 6 ) |
---|
| 2597 | ENDDO |
---|
| 2598 | ENDDO |
---|
| 2599 | ENDDO |
---|
| 2600 | ENDIF |
---|
| 2601 | ! |
---|
[2232] | 2602 | !-- Exchange ghost points for wall flags |
---|
[2696] | 2603 | CALL exchange_horiz_int( wall_flags_0, nys, nyn, nxl, nxr, nzt, nbgp ) |
---|
[2232] | 2604 | ! |
---|
| 2605 | !-- Set boundary conditions also for flags. Can be interpreted as Neumann |
---|
| 2606 | !-- boundary conditions for topography. |
---|
| 2607 | IF ( .NOT. bc_ns_cyc ) THEN |
---|
[2696] | 2608 | IF ( nys == 0 ) THEN |
---|
| 2609 | DO i = 1, nbgp |
---|
| 2610 | wall_flags_0(:,nys-i,:) = wall_flags_0(:,nys,:) |
---|
| 2611 | ENDDO |
---|
| 2612 | ENDIF |
---|
| 2613 | IF ( nyn == ny ) THEN |
---|
| 2614 | DO i = 1, nbgp |
---|
| 2615 | wall_flags_0(:,nyn+i,:) = wall_flags_0(:,nyn,:) |
---|
| 2616 | ENDDO |
---|
| 2617 | ENDIF |
---|
[2232] | 2618 | ENDIF |
---|
| 2619 | IF ( .NOT. bc_lr_cyc ) THEN |
---|
[2696] | 2620 | IF ( nxl == 0 ) THEN |
---|
| 2621 | DO i = 1, nbgp |
---|
| 2622 | wall_flags_0(:,:,nxl-i) = wall_flags_0(:,:,nxl) |
---|
| 2623 | ENDDO |
---|
[2232] | 2624 | ENDIF |
---|
[2696] | 2625 | IF ( nxr == nx ) THEN |
---|
| 2626 | DO i = 1, nbgp |
---|
| 2627 | wall_flags_0(:,:,nxr+i) = wall_flags_0(:,:,nxr) |
---|
[2232] | 2628 | ENDDO |
---|
[2696] | 2629 | ENDIF |
---|
[2232] | 2630 | ENDIF |
---|
[4168] | 2631 | ! |
---|
| 2632 | !-- Pre-calculate topography top indices (former get_topography_top_index |
---|
| 2633 | !-- function) |
---|
| 2634 | ALLOCATE( topo_top_ind(nysg:nyng,nxlg:nxrg,0:4) ) |
---|
| 2635 | ! |
---|
| 2636 | !-- Uppermost topography index on scalar grid |
---|
| 2637 | ibit = 12 |
---|
| 2638 | topo_top_ind(:,:,0) = MAXLOC( & |
---|
| 2639 | MERGE( 1, 0, & |
---|
| 2640 | BTEST( wall_flags_0(:,:,:), ibit ) & |
---|
| 2641 | ), DIM = 1 & |
---|
| 2642 | ) - 1 |
---|
| 2643 | ! |
---|
| 2644 | !-- Uppermost topography index on u grid |
---|
| 2645 | ibit = 14 |
---|
| 2646 | topo_top_ind(:,:,1) = MAXLOC( & |
---|
| 2647 | MERGE( 1, 0, & |
---|
| 2648 | BTEST( wall_flags_0(:,:,:), ibit ) & |
---|
| 2649 | ), DIM = 1 & |
---|
| 2650 | ) - 1 |
---|
| 2651 | ! |
---|
| 2652 | !-- Uppermost topography index on v grid |
---|
| 2653 | ibit = 16 |
---|
| 2654 | topo_top_ind(:,:,2) = MAXLOC( & |
---|
| 2655 | MERGE( 1, 0, & |
---|
| 2656 | BTEST( wall_flags_0(:,:,:), ibit ) & |
---|
| 2657 | ), DIM = 1 & |
---|
| 2658 | ) - 1 |
---|
| 2659 | ! |
---|
| 2660 | !-- Uppermost topography index on w grid |
---|
| 2661 | ibit = 18 |
---|
| 2662 | topo_top_ind(:,:,3) = MAXLOC( & |
---|
| 2663 | MERGE( 1, 0, & |
---|
| 2664 | BTEST( wall_flags_0(:,:,:), ibit ) & |
---|
| 2665 | ), DIM = 1 & |
---|
| 2666 | ) - 1 |
---|
| 2667 | ! |
---|
| 2668 | !-- Uppermost topography index on scalar outer grid |
---|
| 2669 | ibit = 24 |
---|
| 2670 | topo_top_ind(:,:,4) = MAXLOC( & |
---|
| 2671 | MERGE( 1, 0, & |
---|
| 2672 | BTEST( wall_flags_0(:,:,:), ibit ) & |
---|
| 2673 | ), DIM = 1 & |
---|
| 2674 | ) - 1 |
---|
[1] | 2675 | |
---|
[2696] | 2676 | END SUBROUTINE set_topo_flags |
---|
[114] | 2677 | |
---|
| 2678 | |
---|
| 2679 | |
---|