[1873] | 1 | !> @file diffusion_s.f90 |
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[4583] | 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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[4583] | 5 | ! PALM is free software: you can redistribute it and/or modify it under the terms of the GNU General |
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| 6 | ! Public License as published by the Free Software Foundation, either version 3 of the License, or |
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| 7 | ! (at your option) any later version. |
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[1036] | 8 | ! |
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[4583] | 9 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the |
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| 10 | ! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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| 11 | ! Public License for more details. |
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[1036] | 12 | ! |
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[4583] | 13 | ! You should have received a copy of the GNU General Public License along with PALM. If not, see |
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| 14 | ! <http://www.gnu.org/licenses/>. |
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[1036] | 15 | ! |
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[4828] | 16 | ! Copyright 1997-2021 Leibniz Universitaet Hannover |
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[4583] | 17 | !--------------------------------------------------------------------------------------------------! |
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[1036] | 18 | ! |
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[484] | 19 | ! Current revisions: |
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[1001] | 20 | ! ------------------ |
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[4671] | 21 | ! |
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| 22 | ! |
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[1321] | 23 | ! Former revisions: |
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| 24 | ! ----------------- |
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| 25 | ! $Id: diffusion_s.f90 4828 2021-01-05 11:21:41Z moh.hefny $ |
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[4671] | 26 | ! Implementation of downward facing USM and LSM surfaces |
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| 27 | ! |
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| 28 | ! 4583 2020-06-29 12:36:47Z raasch |
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[4583] | 29 | ! file re-formatted to follow the PALM coding standard |
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| 30 | ! |
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| 31 | ! 4360 2020-01-07 11:25:50Z suehring |
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| 32 | ! Introduction of wall_flags_total_0, which currently sets bits based on static topography |
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| 33 | ! information used in wall_flags_static_0 |
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| 34 | ! |
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[4346] | 35 | ! 4329 2019-12-10 15:46:36Z motisi |
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| 36 | ! Renamed wall_flags_0 to wall_flags_total_0 |
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[4583] | 37 | ! |
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[4329] | 38 | ! 4182 2019-08-22 15:20:23Z scharf |
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[4182] | 39 | ! Corrected "Former revisions" section |
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[4583] | 40 | ! |
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[4182] | 41 | ! 3927 2019-04-23 13:24:29Z raasch |
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[3927] | 42 | ! pointer attribute removed from scalar 3d-array for performance reasons |
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[4583] | 43 | ! |
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[3927] | 44 | ! 3761 2019-02-25 15:31:42Z raasch |
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[3761] | 45 | ! unused variables removed |
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[4583] | 46 | ! |
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[3761] | 47 | ! 3655 2019-01-07 16:51:22Z knoop |
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[3636] | 48 | ! nopointer option removed |
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[1321] | 49 | ! |
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[4182] | 50 | ! Revision 1.1 2000/04/13 14:54:02 schroeter |
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| 51 | ! Initial revision |
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| 52 | ! |
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| 53 | ! |
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[1] | 54 | ! Description: |
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| 55 | ! ------------ |
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[1682] | 56 | !> Diffusion term of scalar quantities (temperature and water content) |
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[4583] | 57 | !--------------------------------------------------------------------------------------------------! |
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[1682] | 58 | MODULE diffusion_s_mod |
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[1] | 59 | |
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[4583] | 60 | |
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[1] | 61 | PRIVATE |
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[2118] | 62 | PUBLIC diffusion_s |
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[1] | 63 | |
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| 64 | INTERFACE diffusion_s |
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| 65 | MODULE PROCEDURE diffusion_s |
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| 66 | MODULE PROCEDURE diffusion_s_ij |
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| 67 | END INTERFACE diffusion_s |
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| 68 | |
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| 69 | CONTAINS |
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| 70 | |
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| 71 | |
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[4583] | 72 | !--------------------------------------------------------------------------------------------------! |
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[1682] | 73 | ! Description: |
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| 74 | ! ------------ |
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| 75 | !> Call for all grid points |
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[4583] | 76 | !--------------------------------------------------------------------------------------------------! |
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| 77 | SUBROUTINE diffusion_s( s, s_flux_def_h_up, s_flux_def_h_down, & |
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| 78 | s_flux_t, & |
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[4671] | 79 | s_flux_lsm_h_up, s_flux_lsm_h_down, & |
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| 80 | s_flux_usm_h_up, s_flux_usm_h_down, & |
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[4583] | 81 | s_flux_def_v_north, s_flux_def_v_south, & |
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| 82 | s_flux_def_v_east, s_flux_def_v_west, & |
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| 83 | s_flux_lsm_v_north, s_flux_lsm_v_south, & |
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| 84 | s_flux_lsm_v_east, s_flux_lsm_v_west, & |
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| 85 | s_flux_usm_v_north, s_flux_usm_v_south, & |
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[2232] | 86 | s_flux_usm_v_east, s_flux_usm_v_west ) |
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[1] | 87 | |
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[4583] | 88 | USE arrays_3d, & |
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[2037] | 89 | ONLY: ddzu, ddzw, kh, tend, drho_air, rho_air_zw |
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[4583] | 90 | |
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| 91 | USE control_parameters, & |
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[1320] | 92 | ONLY: use_surface_fluxes, use_top_fluxes |
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[4583] | 93 | |
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| 94 | USE grid_variables, & |
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[2759] | 95 | ONLY: ddx, ddx2, ddy, ddy2 |
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[4583] | 96 | |
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| 97 | USE indices, & |
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| 98 | ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt, wall_flags_total_0 |
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| 99 | |
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[1320] | 100 | USE kinds |
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[1] | 101 | |
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[4583] | 102 | USE surface_mod, & |
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| 103 | ONLY : surf_def_h, surf_def_v, surf_lsm_h, surf_lsm_v, surf_usm_h, surf_usm_v |
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[2232] | 104 | |
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[1] | 105 | IMPLICIT NONE |
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| 106 | |
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[2232] | 107 | INTEGER(iwp) :: i !< running index x direction |
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| 108 | INTEGER(iwp) :: j !< running index y direction |
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| 109 | INTEGER(iwp) :: k !< running index z direction |
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| 110 | INTEGER(iwp) :: m !< running index surface elements |
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| 111 | INTEGER(iwp) :: surf_e !< End index of surface elements at (j,i)-gridpoint |
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| 112 | INTEGER(iwp) :: surf_s !< Start index of surface elements at (j,i)-gridpoint |
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| 113 | |
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| 114 | REAL(wp) :: flag !< flag to mask topography grid points |
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[4583] | 115 | REAL(wp) :: mask_bottom !< flag to mask vertical upward-facing surface |
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| 116 | REAL(wp) :: mask_east !< flag to mask vertical surface east of the grid point |
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[2232] | 117 | REAL(wp) :: mask_north !< flag to mask vertical surface north of the grid point |
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[4583] | 118 | REAL(wp) :: mask_south !< flag to mask vertical surface south of the grid point |
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| 119 | REAL(wp) :: mask_top !< flag to mask vertical downward-facing surface |
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[2232] | 120 | REAL(wp) :: mask_west !< flag to mask vertical surface west of the grid point |
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| 121 | |
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[4671] | 122 | REAL(wp), DIMENSION(1:surf_def_h(0)%ns) :: s_flux_def_h_up !< flux at horizontal upward-facing default-type surfaces |
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[4583] | 123 | REAL(wp), DIMENSION(1:surf_def_h(1)%ns) :: s_flux_def_h_down !< flux at horizontal donwward-facing default-type surfaces |
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| 124 | REAL(wp), DIMENSION(1:surf_def_v(2)%ns) :: s_flux_def_v_east !< flux at east-facing vertical default-type surfaces |
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[2232] | 125 | REAL(wp), DIMENSION(1:surf_def_v(0)%ns) :: s_flux_def_v_north !< flux at north-facing vertical default-type surfaces |
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| 126 | REAL(wp), DIMENSION(1:surf_def_v(1)%ns) :: s_flux_def_v_south !< flux at south-facing vertical default-type surfaces |
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| 127 | REAL(wp), DIMENSION(1:surf_def_v(3)%ns) :: s_flux_def_v_west !< flux at west-facing vertical default-type surfaces |
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[4671] | 128 | REAL(wp), DIMENSION(1:surf_lsm_h(0)%ns) :: s_flux_lsm_h_up !< flux at horizontal upward-facing natural-type surfaces |
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| 129 | REAL(wp), DIMENSION(1:surf_lsm_h(1)%ns) :: s_flux_lsm_h_down !< flux at horizontal downward-facing natural-type surfaces |
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[4583] | 130 | REAL(wp), DIMENSION(1:surf_lsm_v(2)%ns) :: s_flux_lsm_v_east !< flux at east-facing vertical natural-type surfaces |
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[2232] | 131 | REAL(wp), DIMENSION(1:surf_lsm_v(0)%ns) :: s_flux_lsm_v_north !< flux at north-facing vertical natural-type surfaces |
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| 132 | REAL(wp), DIMENSION(1:surf_lsm_v(1)%ns) :: s_flux_lsm_v_south !< flux at south-facing vertical natural-type surfaces |
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| 133 | REAL(wp), DIMENSION(1:surf_lsm_v(3)%ns) :: s_flux_lsm_v_west !< flux at west-facing vertical natural-type surfaces |
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[4671] | 134 | REAL(wp), DIMENSION(1:surf_usm_h(0)%ns) :: s_flux_usm_h_up !< flux at horizontal upward-facing urban-type surfaces |
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| 135 | REAL(wp), DIMENSION(1:surf_usm_h(1)%ns) :: s_flux_usm_h_down !< flux at horizontal downward-facing urban-type surfaces |
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[4583] | 136 | REAL(wp), DIMENSION(1:surf_usm_v(2)%ns) :: s_flux_usm_v_east !< flux at east-facing vertical urban-type surfaces |
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[2232] | 137 | REAL(wp), DIMENSION(1:surf_usm_v(0)%ns) :: s_flux_usm_v_north !< flux at north-facing vertical urban-type surfaces |
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| 138 | REAL(wp), DIMENSION(1:surf_usm_v(1)%ns) :: s_flux_usm_v_south !< flux at south-facing vertical urban-type surfaces |
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| 139 | REAL(wp), DIMENSION(1:surf_usm_v(3)%ns) :: s_flux_usm_v_west !< flux at west-facing vertical urban-type surfaces |
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| 140 | REAL(wp), DIMENSION(1:surf_def_h(2)%ns) :: s_flux_t !< flux at model top |
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[3636] | 141 | |
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[3927] | 142 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: s !< treated scalar |
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[1] | 143 | |
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[3636] | 144 | |
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[3634] | 145 | !$ACC PARALLEL LOOP COLLAPSE(2) PRIVATE(i, j, k, m) & |
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| 146 | !$ACC PRIVATE(surf_e, surf_s, flag, mask_top, mask_bottom) & |
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| 147 | !$ACC PRIVATE(mask_north, mask_south, mask_west, mask_east) & |
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[4346] | 148 | !$ACC PRESENT(wall_flags_total_0, kh) & |
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[3634] | 149 | !$ACC PRESENT(s) & |
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| 150 | !$ACC PRESENT(ddzu, ddzw, drho_air, rho_air_zw) & |
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| 151 | !$ACC PRESENT(surf_def_h(0:2), surf_def_v(0:3)) & |
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[4671] | 152 | !$ACC PRESENT(surf_lsm_h(0:1), surf_lsm_v(0:3)) & |
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| 153 | !$ACC PRESENT(surf_usm_h(0:1), surf_usm_v(0:3)) & |
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[3634] | 154 | !$ACC PRESENT(s_flux_def_h_up, s_flux_def_h_down) & |
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| 155 | !$ACC PRESENT(s_flux_t) & |
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| 156 | !$ACC PRESENT(s_flux_def_v_north, s_flux_def_v_south) & |
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| 157 | !$ACC PRESENT(s_flux_def_v_east, s_flux_def_v_west) & |
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[4671] | 158 | !$ACC PRESENT(s_flux_lsm_h_up, s_flux_lsm_h_down) & |
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[3634] | 159 | !$ACC PRESENT(s_flux_lsm_v_north, s_flux_lsm_v_south) & |
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| 160 | !$ACC PRESENT(s_flux_lsm_v_east, s_flux_lsm_v_west) & |
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[4671] | 161 | !$ACC PRESENT(s_flux_usm_h_up, s_flux_usm_h_down) & |
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[3634] | 162 | !$ACC PRESENT(s_flux_usm_v_north, s_flux_usm_v_south) & |
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| 163 | !$ACC PRESENT(s_flux_usm_v_east, s_flux_usm_v_west) & |
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| 164 | !$ACC PRESENT(tend) |
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[1] | 165 | DO i = nxl, nxr |
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| 166 | DO j = nys,nyn |
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| 167 | ! |
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| 168 | !-- Compute horizontal diffusion |
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[2232] | 169 | DO k = nzb+1, nzt |
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| 170 | ! |
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| 171 | !-- Predetermine flag to mask topography and wall-bounded grid points |
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[4583] | 172 | flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 0 ) ) |
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[2232] | 173 | ! |
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[4583] | 174 | !-- Predetermine flag to mask wall-bounded grid points, equivalent to former s_outer |
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| 175 | !-- array |
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[4346] | 176 | mask_west = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j,i-1), 0 ) ) |
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| 177 | mask_east = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j,i+1), 0 ) ) |
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| 178 | mask_south = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j-1,i), 0 ) ) |
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| 179 | mask_north = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j+1,i), 0 ) ) |
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[1] | 180 | |
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[4583] | 181 | tend(k,j,i) = tend(k,j,i) & |
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| 182 | + 0.5_wp * ( & |
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| 183 | mask_east * ( kh(k,j,i) + kh(k,j,i+1) ) & |
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| 184 | * ( s(k,j,i+1) - s(k,j,i) ) & |
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| 185 | - mask_west * ( kh(k,j,i) + kh(k,j,i-1) ) & |
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| 186 | * ( s(k,j,i) - s(k,j,i-1) ) & |
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| 187 | ) * ddx2 * flag & |
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| 188 | + 0.5_wp * ( & |
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| 189 | mask_north * ( kh(k,j,i) + kh(k,j+1,i) ) & |
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| 190 | * ( s(k,j+1,i) - s(k,j,i) ) & |
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| 191 | - mask_south * ( kh(k,j,i) + kh(k,j-1,i) ) & |
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| 192 | * ( s(k,j,i) - s(k,j-1,i) ) & |
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| 193 | ) * ddy2 * flag |
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[1] | 194 | ENDDO |
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| 195 | |
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| 196 | ! |
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[4583] | 197 | !-- Apply prescribed horizontal wall heatflux where necessary. First, determine start and |
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| 198 | !-- end index for respective (j,i)-index. Please note, in the flat case following loop will |
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| 199 | !-- not be entered, as surf_s=1 and surf_e=0. Furtermore, note, no vertical natural |
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| 200 | !-- surfaces so far. |
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| 201 | !-- First, for default-type surfaces. |
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[2232] | 202 | !-- North-facing vertical default-type surfaces |
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| 203 | surf_s = surf_def_v(0)%start_index(j,i) |
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| 204 | surf_e = surf_def_v(0)%end_index(j,i) |
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| 205 | DO m = surf_s, surf_e |
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| 206 | k = surf_def_v(0)%k(m) |
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[2759] | 207 | tend(k,j,i) = tend(k,j,i) + s_flux_def_v_north(m) * ddy |
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[2232] | 208 | ENDDO |
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| 209 | ! |
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| 210 | !-- South-facing vertical default-type surfaces |
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| 211 | surf_s = surf_def_v(1)%start_index(j,i) |
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| 212 | surf_e = surf_def_v(1)%end_index(j,i) |
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| 213 | DO m = surf_s, surf_e |
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| 214 | k = surf_def_v(1)%k(m) |
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[2759] | 215 | tend(k,j,i) = tend(k,j,i) + s_flux_def_v_south(m) * ddy |
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[2232] | 216 | ENDDO |
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| 217 | ! |
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| 218 | !-- East-facing vertical default-type surfaces |
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| 219 | surf_s = surf_def_v(2)%start_index(j,i) |
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| 220 | surf_e = surf_def_v(2)%end_index(j,i) |
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| 221 | DO m = surf_s, surf_e |
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| 222 | k = surf_def_v(2)%k(m) |
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[2759] | 223 | tend(k,j,i) = tend(k,j,i) + s_flux_def_v_east(m) * ddx |
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[2232] | 224 | ENDDO |
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| 225 | ! |
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| 226 | !-- West-facing vertical default-type surfaces |
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| 227 | surf_s = surf_def_v(3)%start_index(j,i) |
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| 228 | surf_e = surf_def_v(3)%end_index(j,i) |
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| 229 | DO m = surf_s, surf_e |
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| 230 | k = surf_def_v(3)%k(m) |
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[2759] | 231 | tend(k,j,i) = tend(k,j,i) + s_flux_def_v_west(m) * ddx |
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[2232] | 232 | ENDDO |
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| 233 | ! |
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| 234 | !-- Now, for natural-type surfaces. |
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| 235 | !-- North-facing |
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| 236 | surf_s = surf_lsm_v(0)%start_index(j,i) |
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| 237 | surf_e = surf_lsm_v(0)%end_index(j,i) |
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| 238 | DO m = surf_s, surf_e |
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| 239 | k = surf_lsm_v(0)%k(m) |
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[2759] | 240 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_v_north(m) * ddy |
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[2232] | 241 | ENDDO |
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| 242 | ! |
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| 243 | !-- South-facing |
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| 244 | surf_s = surf_lsm_v(1)%start_index(j,i) |
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| 245 | surf_e = surf_lsm_v(1)%end_index(j,i) |
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| 246 | DO m = surf_s, surf_e |
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| 247 | k = surf_lsm_v(1)%k(m) |
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[2759] | 248 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_v_south(m) * ddy |
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[2232] | 249 | ENDDO |
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| 250 | ! |
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| 251 | !-- East-facing |
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| 252 | surf_s = surf_lsm_v(2)%start_index(j,i) |
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| 253 | surf_e = surf_lsm_v(2)%end_index(j,i) |
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| 254 | DO m = surf_s, surf_e |
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| 255 | k = surf_lsm_v(2)%k(m) |
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[2759] | 256 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_v_east(m) * ddx |
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[2232] | 257 | ENDDO |
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| 258 | ! |
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| 259 | !-- West-facing |
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| 260 | surf_s = surf_lsm_v(3)%start_index(j,i) |
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| 261 | surf_e = surf_lsm_v(3)%end_index(j,i) |
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| 262 | DO m = surf_s, surf_e |
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| 263 | k = surf_lsm_v(3)%k(m) |
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[2759] | 264 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_v_west(m) * ddx |
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[2232] | 265 | ENDDO |
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| 266 | ! |
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| 267 | !-- Now, for urban-type surfaces. |
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| 268 | !-- North-facing |
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| 269 | surf_s = surf_usm_v(0)%start_index(j,i) |
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| 270 | surf_e = surf_usm_v(0)%end_index(j,i) |
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| 271 | DO m = surf_s, surf_e |
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| 272 | k = surf_usm_v(0)%k(m) |
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[2759] | 273 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_v_north(m) * ddy |
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[2232] | 274 | ENDDO |
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| 275 | ! |
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| 276 | !-- South-facing |
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| 277 | surf_s = surf_usm_v(1)%start_index(j,i) |
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| 278 | surf_e = surf_usm_v(1)%end_index(j,i) |
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| 279 | DO m = surf_s, surf_e |
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| 280 | k = surf_usm_v(1)%k(m) |
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[2759] | 281 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_v_south(m) * ddy |
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[2232] | 282 | ENDDO |
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| 283 | ! |
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| 284 | !-- East-facing |
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| 285 | surf_s = surf_usm_v(2)%start_index(j,i) |
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| 286 | surf_e = surf_usm_v(2)%end_index(j,i) |
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| 287 | DO m = surf_s, surf_e |
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| 288 | k = surf_usm_v(2)%k(m) |
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[2759] | 289 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_v_east(m) * ddx |
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[2232] | 290 | ENDDO |
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| 291 | ! |
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| 292 | !-- West-facing |
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| 293 | surf_s = surf_usm_v(3)%start_index(j,i) |
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| 294 | surf_e = surf_usm_v(3)%end_index(j,i) |
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| 295 | DO m = surf_s, surf_e |
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| 296 | k = surf_usm_v(3)%k(m) |
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[2759] | 297 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_v_west(m) * ddx |
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[2232] | 298 | ENDDO |
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[1] | 299 | |
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| 300 | ! |
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[4583] | 301 | !-- Compute vertical diffusion. In case that surface fluxes have been prescribed or |
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| 302 | !-- computed at bottom and/or top, index k starts/ends at nzb+2 or nzt-1, respectively. |
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| 303 | !-- Model top is also mask if top flux is given. |
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[2232] | 304 | DO k = nzb+1, nzt |
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| 305 | ! |
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[4583] | 306 | !-- Determine flags to mask topography below and above. Flag 0 is used to mask |
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| 307 | !-- topography in general, and flag 8 implies information about use_surface_fluxes. |
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| 308 | !-- Flag 9 is used to control flux at model top. |
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| 309 | mask_bottom = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k-1,j,i), 8 ) ) |
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| 310 | mask_top = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k+1,j,i), 8 ) ) * & |
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| 311 | MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k+1,j,i), 9 ) ) |
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| 312 | flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 0 ) ) |
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[1] | 313 | |
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[4583] | 314 | tend(k,j,i) = tend(k,j,i) & |
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| 315 | + 0.5_wp * ( & |
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| 316 | ( kh(k,j,i) + kh(k+1,j,i) ) * & |
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| 317 | ( s(k+1,j,i)-s(k,j,i) ) * ddzu(k+1) & |
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| 318 | * rho_air_zw(k) & |
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| 319 | * mask_top & |
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| 320 | - ( kh(k,j,i) + kh(k-1,j,i) ) * & |
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| 321 | ( s(k,j,i)-s(k-1,j,i) ) * ddzu(k) & |
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| 322 | * rho_air_zw(k-1) & |
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| 323 | * mask_bottom & |
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| 324 | ) * ddzw(k) * drho_air(k) & |
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[2232] | 325 | * flag |
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[1] | 326 | ENDDO |
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| 327 | |
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| 328 | ! |
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[2232] | 329 | !-- Vertical diffusion at horizontal walls. |
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[1] | 330 | IF ( use_surface_fluxes ) THEN |
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[2232] | 331 | ! |
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[4583] | 332 | !-- Default-type surfaces, upward-facing |
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[2232] | 333 | surf_s = surf_def_h(0)%start_index(j,i) |
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| 334 | surf_e = surf_def_h(0)%end_index(j,i) |
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| 335 | DO m = surf_s, surf_e |
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| 336 | k = surf_def_h(0)%k(m) |
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[4583] | 337 | tend(k,j,i) = tend(k,j,i) + s_flux_def_h_up(m) * ddzw(k) * drho_air(k) |
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[2232] | 338 | ENDDO |
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| 339 | ! |
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[4583] | 340 | !-- Default-type surfaces, downward-facing |
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[2232] | 341 | surf_s = surf_def_h(1)%start_index(j,i) |
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| 342 | surf_e = surf_def_h(1)%end_index(j,i) |
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| 343 | DO m = surf_s, surf_e |
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| 344 | k = surf_def_h(1)%k(m) |
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[4583] | 345 | tend(k,j,i) = tend(k,j,i) + s_flux_def_h_down(m) * ddzw(k) * drho_air(k) |
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[2232] | 346 | ENDDO |
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[19] | 347 | ! |
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[4583] | 348 | !-- Natural-type surfaces, upward-facing |
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[4671] | 349 | surf_s = surf_lsm_h(0)%start_index(j,i) |
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| 350 | surf_e = surf_lsm_h(0)%end_index(j,i) |
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[2232] | 351 | DO m = surf_s, surf_e |
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[4671] | 352 | k = surf_lsm_h(0)%k(m) |
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[4583] | 353 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_h_up(m) * ddzw(k) * drho_air(k) |
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[2232] | 354 | ENDDO |
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| 355 | ! |
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[4671] | 356 | !-- Natural-type surfaces, downward-facing |
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| 357 | surf_s = surf_lsm_h(1)%start_index(j,i) |
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| 358 | surf_e = surf_lsm_h(1)%end_index(j,i) |
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| 359 | DO m = surf_s, surf_e |
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| 360 | k = surf_lsm_h(1)%k(m) |
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| 361 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_h_down(m) * ddzw(k) * drho_air(k) |
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| 362 | ENDDO |
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| 363 | ! |
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[4583] | 364 | !-- Urban-type surfaces, upward-facing |
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[4671] | 365 | surf_s = surf_usm_h(0)%start_index(j,i) |
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| 366 | surf_e = surf_usm_h(0)%end_index(j,i) |
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[2232] | 367 | DO m = surf_s, surf_e |
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[4671] | 368 | k = surf_usm_h(0)%k(m) |
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[4583] | 369 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_h_up(m) * ddzw(k) * drho_air(k) |
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[2232] | 370 | ENDDO |
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[4671] | 371 | ! |
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| 372 | !-- Urban-type surfaces, downward-facing |
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| 373 | surf_s = surf_usm_h(1)%start_index(j,i) |
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| 374 | surf_e = surf_usm_h(1)%end_index(j,i) |
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| 375 | DO m = surf_s, surf_e |
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| 376 | k = surf_usm_h(1)%k(m) |
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| 377 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_h_down(m) * ddzw(k) * drho_air(k) |
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| 378 | ENDDO |
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[2232] | 379 | |
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[19] | 380 | ENDIF |
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[2232] | 381 | ! |
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| 382 | !-- Vertical diffusion at the last computational gridpoint along z-direction |
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| 383 | IF ( use_top_fluxes ) THEN |
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| 384 | surf_s = surf_def_h(2)%start_index(j,i) |
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| 385 | surf_e = surf_def_h(2)%end_index(j,i) |
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| 386 | DO m = surf_s, surf_e |
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[19] | 387 | |
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[2232] | 388 | k = surf_def_h(2)%k(m) |
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[4583] | 389 | tend(k,j,i) = tend(k,j,i) + ( - s_flux_t(m) ) * ddzw(k) * drho_air(k) |
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[2232] | 390 | ENDDO |
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| 391 | ENDIF |
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| 392 | |
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[1] | 393 | ENDDO |
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| 394 | ENDDO |
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| 395 | |
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| 396 | END SUBROUTINE diffusion_s |
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| 397 | |
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[4583] | 398 | !--------------------------------------------------------------------------------------------------! |
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[1682] | 399 | ! Description: |
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| 400 | ! ------------ |
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| 401 | !> Call for grid point i,j |
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[4583] | 402 | !--------------------------------------------------------------------------------------------------! |
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| 403 | SUBROUTINE diffusion_s_ij( i, j, s, & |
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| 404 | s_flux_def_h_up, s_flux_def_h_down, & |
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| 405 | s_flux_t, & |
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[4671] | 406 | s_flux_lsm_h_up, s_flux_lsm_h_down, & |
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| 407 | s_flux_usm_h_up, s_flux_usm_h_down, & |
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[4583] | 408 | s_flux_def_v_north, s_flux_def_v_south, & |
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| 409 | s_flux_def_v_east, s_flux_def_v_west, & |
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| 410 | s_flux_lsm_v_north, s_flux_lsm_v_south, & |
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| 411 | s_flux_lsm_v_east, s_flux_lsm_v_west, & |
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| 412 | s_flux_usm_v_north, s_flux_usm_v_south, & |
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| 413 | s_flux_usm_v_east, s_flux_usm_v_west ) |
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[1] | 414 | |
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[4583] | 415 | USE arrays_3d, & |
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[2037] | 416 | ONLY: ddzu, ddzw, kh, tend, drho_air, rho_air_zw |
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[4583] | 417 | |
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| 418 | USE control_parameters, & |
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[1320] | 419 | ONLY: use_surface_fluxes, use_top_fluxes |
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[4583] | 420 | |
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| 421 | USE grid_variables, & |
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[2759] | 422 | ONLY: ddx, ddx2, ddy, ddy2 |
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[4583] | 423 | |
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| 424 | USE indices, & |
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[4346] | 425 | ONLY: nxlg, nxrg, nyng, nysg, nzb, nzt, wall_flags_total_0 |
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[4583] | 426 | |
---|
[1320] | 427 | USE kinds |
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[1] | 428 | |
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[4583] | 429 | USE surface_mod, & |
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| 430 | ONLY : surf_def_h, surf_def_v, surf_lsm_h, surf_lsm_v, surf_usm_h, surf_usm_v |
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[2232] | 431 | |
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[1] | 432 | IMPLICIT NONE |
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| 433 | |
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[2232] | 434 | INTEGER(iwp) :: i !< running index x direction |
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| 435 | INTEGER(iwp) :: j !< running index y direction |
---|
| 436 | INTEGER(iwp) :: k !< running index z direction |
---|
| 437 | INTEGER(iwp) :: m !< running index surface elements |
---|
| 438 | INTEGER(iwp) :: surf_e !< End index of surface elements at (j,i)-gridpoint |
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| 439 | INTEGER(iwp) :: surf_s !< Start index of surface elements at (j,i)-gridpoint |
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| 440 | |
---|
| 441 | REAL(wp) :: flag !< flag to mask topography grid points |
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[4583] | 442 | REAL(wp) :: mask_bottom !< flag to mask vertical upward-facing surface |
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| 443 | REAL(wp) :: mask_east !< flag to mask vertical surface east of the grid point |
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[2232] | 444 | REAL(wp) :: mask_north !< flag to mask vertical surface north of the grid point |
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[4583] | 445 | REAL(wp) :: mask_south !< flag to mask vertical surface south of the grid point |
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| 446 | REAL(wp) :: mask_top !< flag to mask vertical downward-facing surface |
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[2232] | 447 | REAL(wp) :: mask_west !< flag to mask vertical surface west of the grid point |
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| 448 | |
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[4583] | 449 | REAL(wp), DIMENSION(1:surf_def_h(1)%ns) :: s_flux_def_h_down !< flux at horizontal donwward-facing default-type surfaces |
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| 450 | REAL(wp), DIMENSION(1:surf_def_h(0)%ns) :: s_flux_def_h_up !< flux at horizontal upward-facing default-type surfaces |
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| 451 | REAL(wp), DIMENSION(1:surf_def_v(2)%ns) :: s_flux_def_v_east !< flux at east-facing vertical default-type surfaces |
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[2232] | 452 | REAL(wp), DIMENSION(1:surf_def_v(0)%ns) :: s_flux_def_v_north !< flux at north-facing vertical default-type surfaces |
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| 453 | REAL(wp), DIMENSION(1:surf_def_v(1)%ns) :: s_flux_def_v_south !< flux at south-facing vertical default-type surfaces |
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| 454 | REAL(wp), DIMENSION(1:surf_def_v(3)%ns) :: s_flux_def_v_west !< flux at west-facing vertical default-type surfaces |
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[4671] | 455 | REAL(wp), DIMENSION(1:surf_lsm_h(0)%ns) :: s_flux_lsm_h_up !< flux at horizontal upward-facing natural-type surfaces |
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| 456 | REAL(wp), DIMENSION(1:surf_lsm_h(1)%ns) :: s_flux_lsm_h_down !< flux at horizontal downward-facing natural-type surfaces |
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[4583] | 457 | REAL(wp), DIMENSION(1:surf_lsm_v(2)%ns) :: s_flux_lsm_v_east !< flux at east-facing vertical urban-type surfaces |
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[2232] | 458 | REAL(wp), DIMENSION(1:surf_lsm_v(0)%ns) :: s_flux_lsm_v_north !< flux at north-facing vertical urban-type surfaces |
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| 459 | REAL(wp), DIMENSION(1:surf_lsm_v(1)%ns) :: s_flux_lsm_v_south !< flux at south-facing vertical urban-type surfaces |
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| 460 | REAL(wp), DIMENSION(1:surf_lsm_v(3)%ns) :: s_flux_lsm_v_west !< flux at west-facing vertical urban-type surfaces |
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[4671] | 461 | REAL(wp), DIMENSION(1:surf_usm_h(0)%ns) :: s_flux_usm_h_up !< flux at horizontal upward-facing urban-type surfaces |
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| 462 | REAL(wp), DIMENSION(1:surf_usm_h(1)%ns) :: s_flux_usm_h_down !< flux at horizontal downward-facing urban-type surfaces |
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[4583] | 463 | REAL(wp), DIMENSION(1:surf_usm_v(2)%ns) :: s_flux_usm_v_east !< flux at east-facing vertical urban-type surfaces |
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[2232] | 464 | REAL(wp), DIMENSION(1:surf_usm_v(0)%ns) :: s_flux_usm_v_north !< flux at north-facing vertical urban-type surfaces |
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| 465 | REAL(wp), DIMENSION(1:surf_usm_v(1)%ns) :: s_flux_usm_v_south !< flux at south-facing vertical urban-type surfaces |
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| 466 | REAL(wp), DIMENSION(1:surf_usm_v(3)%ns) :: s_flux_usm_v_west !< flux at west-facing vertical urban-type surfaces |
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| 467 | REAL(wp), DIMENSION(1:surf_def_h(2)%ns) :: s_flux_t !< flux at model top |
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[3636] | 468 | |
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[3927] | 469 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: s !< treated scalar |
---|
[1] | 470 | |
---|
[4583] | 471 | |
---|
[1] | 472 | ! |
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| 473 | !-- Compute horizontal diffusion |
---|
[2232] | 474 | DO k = nzb+1, nzt |
---|
| 475 | ! |
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| 476 | !-- Predetermine flag to mask topography and wall-bounded grid points |
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[4583] | 477 | flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 0 ) ) |
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[2232] | 478 | ! |
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[4583] | 479 | !-- Predetermine flag to mask wall-bounded grid points, equivalent to former s_outer array |
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[4346] | 480 | mask_west = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j,i-1), 0 ) ) |
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| 481 | mask_east = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j,i+1), 0 ) ) |
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| 482 | mask_south = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j-1,i), 0 ) ) |
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| 483 | mask_north = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j+1,i), 0 ) ) |
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[2232] | 484 | ! |
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[4583] | 485 | !-- Finally, determine flag to mask both topography itself as well as wall-bounded grid |
---|
| 486 | !-- points, which will be treated further below |
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[1] | 487 | |
---|
[4583] | 488 | tend(k,j,i) = tend(k,j,i) & |
---|
| 489 | + 0.5_wp * ( & |
---|
| 490 | mask_east * ( kh(k,j,i) + kh(k,j,i+1) ) & |
---|
| 491 | * ( s(k,j,i+1) - s(k,j,i) ) & |
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| 492 | - mask_west * ( kh(k,j,i) + kh(k,j,i-1) ) & |
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| 493 | * ( s(k,j,i) - s(k,j,i-1) ) & |
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| 494 | ) * ddx2 * flag & |
---|
| 495 | + 0.5_wp * ( & |
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| 496 | mask_north * ( kh(k,j,i) + kh(k,j+1,i) ) & |
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| 497 | * ( s(k,j+1,i) - s(k,j,i) ) & |
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| 498 | - mask_south * ( kh(k,j,i) + kh(k,j-1,i) ) & |
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| 499 | * ( s(k,j,i) - s(k,j-1,i) ) & |
---|
[2232] | 500 | ) * ddy2 * flag |
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[1] | 501 | ENDDO |
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| 502 | |
---|
| 503 | ! |
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[4583] | 504 | !-- Apply prescribed horizontal wall heatflux where necessary. First, determine start and end |
---|
| 505 | !-- index for respective (j,i)-index. Please note, in the flat case following loops will not be |
---|
| 506 | !-- entered, as surf_s=1 and surf_e=0. Furtermore, note, no vertical natural surfaces so far. |
---|
| 507 | !-- First, for default-type surfaces. |
---|
[2232] | 508 | !-- North-facing vertical default-type surfaces |
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| 509 | surf_s = surf_def_v(0)%start_index(j,i) |
---|
| 510 | surf_e = surf_def_v(0)%end_index(j,i) |
---|
| 511 | DO m = surf_s, surf_e |
---|
| 512 | k = surf_def_v(0)%k(m) |
---|
[2759] | 513 | tend(k,j,i) = tend(k,j,i) + s_flux_def_v_north(m) * ddy |
---|
[2232] | 514 | ENDDO |
---|
| 515 | ! |
---|
| 516 | !-- South-facing vertical default-type surfaces |
---|
| 517 | surf_s = surf_def_v(1)%start_index(j,i) |
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| 518 | surf_e = surf_def_v(1)%end_index(j,i) |
---|
| 519 | DO m = surf_s, surf_e |
---|
| 520 | k = surf_def_v(1)%k(m) |
---|
[2759] | 521 | tend(k,j,i) = tend(k,j,i) + s_flux_def_v_south(m) * ddy |
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[2232] | 522 | ENDDO |
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| 523 | ! |
---|
| 524 | !-- East-facing vertical default-type surfaces |
---|
| 525 | surf_s = surf_def_v(2)%start_index(j,i) |
---|
| 526 | surf_e = surf_def_v(2)%end_index(j,i) |
---|
| 527 | DO m = surf_s, surf_e |
---|
| 528 | k = surf_def_v(2)%k(m) |
---|
[2759] | 529 | tend(k,j,i) = tend(k,j,i) + s_flux_def_v_east(m) * ddx |
---|
[2232] | 530 | ENDDO |
---|
| 531 | ! |
---|
| 532 | !-- West-facing vertical default-type surfaces |
---|
| 533 | surf_s = surf_def_v(3)%start_index(j,i) |
---|
| 534 | surf_e = surf_def_v(3)%end_index(j,i) |
---|
| 535 | DO m = surf_s, surf_e |
---|
| 536 | k = surf_def_v(3)%k(m) |
---|
[2759] | 537 | tend(k,j,i) = tend(k,j,i) + s_flux_def_v_west(m) * ddx |
---|
[2232] | 538 | ENDDO |
---|
| 539 | ! |
---|
| 540 | !-- Now, for natural-type surfaces |
---|
| 541 | !-- North-facing |
---|
| 542 | surf_s = surf_lsm_v(0)%start_index(j,i) |
---|
| 543 | surf_e = surf_lsm_v(0)%end_index(j,i) |
---|
| 544 | DO m = surf_s, surf_e |
---|
| 545 | k = surf_lsm_v(0)%k(m) |
---|
[2759] | 546 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_v_north(m) * ddy |
---|
[2232] | 547 | ENDDO |
---|
| 548 | ! |
---|
| 549 | !-- South-facing |
---|
| 550 | surf_s = surf_lsm_v(1)%start_index(j,i) |
---|
| 551 | surf_e = surf_lsm_v(1)%end_index(j,i) |
---|
| 552 | DO m = surf_s, surf_e |
---|
| 553 | k = surf_lsm_v(1)%k(m) |
---|
[2759] | 554 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_v_south(m) * ddy |
---|
[2232] | 555 | ENDDO |
---|
| 556 | ! |
---|
| 557 | !-- East-facing |
---|
| 558 | surf_s = surf_lsm_v(2)%start_index(j,i) |
---|
| 559 | surf_e = surf_lsm_v(2)%end_index(j,i) |
---|
| 560 | DO m = surf_s, surf_e |
---|
| 561 | k = surf_lsm_v(2)%k(m) |
---|
[2759] | 562 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_v_east(m) * ddx |
---|
[2232] | 563 | ENDDO |
---|
| 564 | ! |
---|
| 565 | !-- West-facing |
---|
| 566 | surf_s = surf_lsm_v(3)%start_index(j,i) |
---|
| 567 | surf_e = surf_lsm_v(3)%end_index(j,i) |
---|
| 568 | DO m = surf_s, surf_e |
---|
| 569 | k = surf_lsm_v(3)%k(m) |
---|
[2759] | 570 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_v_west(m) * ddx |
---|
[2232] | 571 | ENDDO |
---|
| 572 | ! |
---|
| 573 | !-- Now, for urban-type surfaces |
---|
| 574 | !-- North-facing |
---|
| 575 | surf_s = surf_usm_v(0)%start_index(j,i) |
---|
| 576 | surf_e = surf_usm_v(0)%end_index(j,i) |
---|
| 577 | DO m = surf_s, surf_e |
---|
| 578 | k = surf_usm_v(0)%k(m) |
---|
[2759] | 579 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_v_north(m) * ddy |
---|
[2232] | 580 | ENDDO |
---|
| 581 | ! |
---|
| 582 | !-- South-facing |
---|
| 583 | surf_s = surf_usm_v(1)%start_index(j,i) |
---|
| 584 | surf_e = surf_usm_v(1)%end_index(j,i) |
---|
| 585 | DO m = surf_s, surf_e |
---|
| 586 | k = surf_usm_v(1)%k(m) |
---|
[2759] | 587 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_v_south(m) * ddy |
---|
[2232] | 588 | ENDDO |
---|
| 589 | ! |
---|
| 590 | !-- East-facing |
---|
| 591 | surf_s = surf_usm_v(2)%start_index(j,i) |
---|
| 592 | surf_e = surf_usm_v(2)%end_index(j,i) |
---|
| 593 | DO m = surf_s, surf_e |
---|
| 594 | k = surf_usm_v(2)%k(m) |
---|
[2759] | 595 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_v_east(m) * ddx |
---|
[2232] | 596 | ENDDO |
---|
| 597 | ! |
---|
| 598 | !-- West-facing |
---|
| 599 | surf_s = surf_usm_v(3)%start_index(j,i) |
---|
| 600 | surf_e = surf_usm_v(3)%end_index(j,i) |
---|
| 601 | DO m = surf_s, surf_e |
---|
| 602 | k = surf_usm_v(3)%k(m) |
---|
[2759] | 603 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_v_west(m) * ddx |
---|
[2232] | 604 | ENDDO |
---|
[1] | 605 | |
---|
| 606 | |
---|
| 607 | ! |
---|
[4583] | 608 | !-- Compute vertical diffusion. In case that surface fluxes have been prescribed or computed at |
---|
| 609 | !-- bottom and/or top, index k starts/ends at nzb+2 or nzt-1, respectively. Model top is also |
---|
| 610 | !-- mask if top flux is given. |
---|
[2232] | 611 | DO k = nzb+1, nzt |
---|
| 612 | ! |
---|
[4583] | 613 | !-- Determine flags to mask topography below and above. Flag 0 is used to mask topography in |
---|
| 614 | !-- general, and flag 8 implies information about use_surface_fluxes. Flag 9 is used to |
---|
| 615 | !-- control flux at model top. |
---|
| 616 | mask_bottom = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k-1,j,i), 8 ) ) |
---|
| 617 | mask_top = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k+1,j,i), 8 ) ) * & |
---|
| 618 | MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k+1,j,i), 9 ) ) |
---|
| 619 | flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 0 ) ) |
---|
[1] | 620 | |
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[4583] | 621 | tend(k,j,i) = tend(k,j,i) & |
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| 622 | + 0.5_wp * ( & |
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| 623 | ( kh(k,j,i) + kh(k+1,j,i) ) * & |
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| 624 | ( s(k+1,j,i)-s(k,j,i) ) * ddzu(k+1) & |
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| 625 | * rho_air_zw(k) & |
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| 626 | * mask_top & |
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| 627 | - ( kh(k,j,i) + kh(k-1,j,i) ) * & |
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| 628 | ( s(k,j,i)-s(k-1,j,i) ) * ddzu(k) & |
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| 629 | * rho_air_zw(k-1) & |
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| 630 | * mask_bottom & |
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| 631 | ) * ddzw(k) * drho_air(k) & |
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[2232] | 632 | * flag |
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[1] | 633 | ENDDO |
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| 634 | |
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| 635 | ! |
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[2232] | 636 | !-- Vertical diffusion at horizontal walls. |
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| 637 | !-- TO DO: Adjust for downward facing walls and mask already in main loop |
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[1] | 638 | IF ( use_surface_fluxes ) THEN |
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[2232] | 639 | ! |
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| 640 | !-- Default-type surfaces, upward-facing |
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| 641 | surf_s = surf_def_h(0)%start_index(j,i) |
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| 642 | surf_e = surf_def_h(0)%end_index(j,i) |
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| 643 | DO m = surf_s, surf_e |
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| 644 | k = surf_def_h(0)%k(m) |
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[4583] | 645 | tend(k,j,i) = tend(k,j,i) + s_flux_def_h_up(m) * ddzw(k) * drho_air(k) |
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[2232] | 646 | ENDDO |
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| 647 | ! |
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| 648 | !-- Default-type surfaces, downward-facing |
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| 649 | surf_s = surf_def_h(1)%start_index(j,i) |
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| 650 | surf_e = surf_def_h(1)%end_index(j,i) |
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| 651 | DO m = surf_s, surf_e |
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| 652 | k = surf_def_h(1)%k(m) |
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[4583] | 653 | tend(k,j,i) = tend(k,j,i) + s_flux_def_h_down(m) * ddzw(k) * drho_air(k) |
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[2232] | 654 | ENDDO |
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[19] | 655 | ! |
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[2232] | 656 | !-- Natural-type surfaces, upward-facing |
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[4671] | 657 | surf_s = surf_lsm_h(0)%start_index(j,i) |
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| 658 | surf_e = surf_lsm_h(0)%end_index(j,i) |
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[2232] | 659 | DO m = surf_s, surf_e |
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[4671] | 660 | k = surf_lsm_h(0)%k(m) |
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[4583] | 661 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_h_up(m) * ddzw(k) * drho_air(k) |
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[2232] | 662 | ENDDO |
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| 663 | ! |
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[4671] | 664 | !-- Natural-type surfaces, downward-facing |
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| 665 | surf_s = surf_lsm_h(1)%start_index(j,i) |
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| 666 | surf_e = surf_lsm_h(1)%end_index(j,i) |
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| 667 | DO m = surf_s, surf_e |
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| 668 | k = surf_lsm_h(1)%k(m) |
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| 669 | tend(k,j,i) = tend(k,j,i) + s_flux_lsm_h_down(m) * ddzw(k) * drho_air(k) |
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| 670 | ENDDO |
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| 671 | ! |
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[2232] | 672 | !-- Urban-type surfaces, upward-facing |
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[4671] | 673 | surf_s = surf_usm_h(0)%start_index(j,i) |
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| 674 | surf_e = surf_usm_h(0)%end_index(j,i) |
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[2232] | 675 | DO m = surf_s, surf_e |
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[4671] | 676 | k = surf_usm_h(0)%k(m) |
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[4583] | 677 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_h_up(m) * ddzw(k) * drho_air(k) |
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[2232] | 678 | ENDDO |
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[4671] | 679 | ! |
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| 680 | !-- Urban-type surfaces, upward-facing |
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| 681 | surf_s = surf_usm_h(1)%start_index(j,i) |
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| 682 | surf_e = surf_usm_h(1)%end_index(j,i) |
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| 683 | DO m = surf_s, surf_e |
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| 684 | k = surf_usm_h(1)%k(m) |
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| 685 | tend(k,j,i) = tend(k,j,i) + s_flux_usm_h_down(m) * ddzw(k) * drho_air(k) |
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| 686 | ENDDO |
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[2232] | 687 | ENDIF |
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| 688 | ! |
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[19] | 689 | !-- Vertical diffusion at the last computational gridpoint along z-direction |
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| 690 | IF ( use_top_fluxes ) THEN |
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[2232] | 691 | surf_s = surf_def_h(2)%start_index(j,i) |
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| 692 | surf_e = surf_def_h(2)%end_index(j,i) |
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| 693 | DO m = surf_s, surf_e |
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| 694 | k = surf_def_h(2)%k(m) |
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[4583] | 695 | tend(k,j,i) = tend(k,j,i) + ( - s_flux_t(m) ) * ddzw(k) * drho_air(k) |
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[2232] | 696 | ENDDO |
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[19] | 697 | ENDIF |
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| 698 | |
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[1] | 699 | END SUBROUTINE diffusion_s_ij |
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| 700 | |
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| 701 | END MODULE diffusion_s_mod |
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