[1] | 1 | MODULE diffusion_s_mod |
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| 2 | |
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[1036] | 3 | !--------------------------------------------------------------------------------! |
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| 4 | ! This file is part of PALM. |
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| 5 | ! |
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| 6 | ! PALM is free software: you can redistribute it and/or modify it under the terms |
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| 7 | ! of the GNU General Public License as published by the Free Software Foundation, |
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| 8 | ! either version 3 of the License, or (at your option) any later version. |
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| 9 | ! |
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| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 13 | ! |
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| 14 | ! You should have received a copy of the GNU General Public License along with |
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| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 16 | ! |
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| 17 | ! Copyright 1997-2012 Leibniz University Hannover |
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| 18 | !--------------------------------------------------------------------------------! |
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| 19 | ! |
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[484] | 20 | ! Current revisions: |
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[1001] | 21 | ! ------------------ |
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[1092] | 22 | ! unused variables removed |
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[1] | 23 | ! |
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| 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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[3] | 26 | ! $Id: diffusion_s.f90 1092 2013-02-02 11:24:22Z raasch $ |
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[39] | 27 | ! |
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[1037] | 28 | ! 1036 2012-10-22 13:43:42Z raasch |
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| 29 | ! code put under GPL (PALM 3.9) |
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| 30 | ! |
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[1017] | 31 | ! 1015 2012-09-27 09:23:24Z raasch |
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| 32 | ! accelerator version (*_acc) added |
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| 33 | ! |
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[1011] | 34 | ! 1010 2012-09-20 07:59:54Z raasch |
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| 35 | ! cpp switch __nopointer added for pointer free version |
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| 36 | ! |
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[1002] | 37 | ! 1001 2012-09-13 14:08:46Z raasch |
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| 38 | ! some arrays comunicated by module instead of parameter list |
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| 39 | ! |
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[668] | 40 | ! 667 2010-12-23 12:06:00Z suehring/gryschka |
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| 41 | ! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng |
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| 42 | ! |
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[198] | 43 | ! 183 2008-08-04 15:39:12Z letzel |
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| 44 | ! bugfix: calculation of fluxes at vertical surfaces |
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| 45 | ! |
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[139] | 46 | ! 129 2007-10-30 12:12:24Z letzel |
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| 47 | ! replace wall_heatflux by wall_s_flux that is now included in the parameter |
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| 48 | ! list, bugfix for assignment of fluxes at walls |
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| 49 | ! |
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[39] | 50 | ! 20 2007-02-26 00:12:32Z raasch |
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| 51 | ! Bugfix: ddzw dimensioned 1:nzt"+1" |
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| 52 | ! Calculation extended for gridpoint nzt, fluxes can be given at top, |
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| 53 | ! +s_flux_t in parameter list, s_flux renamed s_flux_b |
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| 54 | ! |
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[3] | 55 | ! RCS Log replace by Id keyword, revision history cleaned up |
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| 56 | ! |
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[1] | 57 | ! Revision 1.8 2006/02/23 10:34:17 raasch |
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| 58 | ! nzb_2d replaced by nzb_s_outer in horizontal diffusion and by nzb_s_inner |
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| 59 | ! or nzb_diff_s_inner, respectively, in vertical diffusion, prescribed surface |
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| 60 | ! fluxes at vertically oriented topography |
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| 61 | ! |
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| 62 | ! Revision 1.1 2000/04/13 14:54:02 schroeter |
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| 63 | ! Initial revision |
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| 64 | ! |
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| 65 | ! |
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| 66 | ! Description: |
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| 67 | ! ------------ |
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| 68 | ! Diffusion term of scalar quantities (temperature and water content) |
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| 69 | !------------------------------------------------------------------------------! |
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| 70 | |
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| 71 | PRIVATE |
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[1015] | 72 | PUBLIC diffusion_s, diffusion_s_acc |
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[1] | 73 | |
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| 74 | INTERFACE diffusion_s |
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| 75 | MODULE PROCEDURE diffusion_s |
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| 76 | MODULE PROCEDURE diffusion_s_ij |
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| 77 | END INTERFACE diffusion_s |
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| 78 | |
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[1015] | 79 | INTERFACE diffusion_s_acc |
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| 80 | MODULE PROCEDURE diffusion_s_acc |
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| 81 | END INTERFACE diffusion_s_acc |
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| 82 | |
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[1] | 83 | CONTAINS |
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| 84 | |
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| 85 | |
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| 86 | !------------------------------------------------------------------------------! |
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| 87 | ! Call for all grid points |
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| 88 | !------------------------------------------------------------------------------! |
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[1001] | 89 | SUBROUTINE diffusion_s( s, s_flux_b, s_flux_t, wall_s_flux ) |
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[1] | 90 | |
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[1001] | 91 | USE arrays_3d |
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[1] | 92 | USE control_parameters |
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| 93 | USE grid_variables |
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| 94 | USE indices |
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| 95 | |
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| 96 | IMPLICIT NONE |
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| 97 | |
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| 98 | INTEGER :: i, j, k |
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[129] | 99 | REAL :: wall_s_flux(0:4) |
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[1001] | 100 | REAL, DIMENSION(nysg:nyng,nxlg:nxrg) :: s_flux_b, s_flux_t |
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[1010] | 101 | #if defined( __nopointer ) |
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| 102 | REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: s |
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| 103 | #else |
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[1001] | 104 | REAL, DIMENSION(:,:,:), POINTER :: s |
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[1010] | 105 | #endif |
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[1] | 106 | |
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| 107 | DO i = nxl, nxr |
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| 108 | DO j = nys,nyn |
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| 109 | ! |
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| 110 | !-- Compute horizontal diffusion |
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[19] | 111 | DO k = nzb_s_outer(j,i)+1, nzt |
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[1] | 112 | |
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| 113 | tend(k,j,i) = tend(k,j,i) & |
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| 114 | + 0.5 * ( & |
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| 115 | ( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) & |
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| 116 | - ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) & |
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| 117 | ) * ddx2 & |
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| 118 | + 0.5 * ( & |
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| 119 | ( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) & |
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| 120 | - ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) & |
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| 121 | ) * ddy2 |
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| 122 | ENDDO |
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| 123 | |
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| 124 | ! |
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| 125 | !-- Apply prescribed horizontal wall heatflux where necessary |
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| 126 | IF ( ( wall_w_x(j,i) .NE. 0.0 ) .OR. ( wall_w_y(j,i) .NE. 0.0 ) ) & |
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| 127 | THEN |
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| 128 | DO k = nzb_s_inner(j,i)+1, nzb_s_outer(j,i) |
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| 129 | |
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| 130 | tend(k,j,i) = tend(k,j,i) & |
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[183] | 131 | + ( fwxp(j,i) * 0.5 * & |
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[1] | 132 | ( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) & |
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[129] | 133 | + ( 1.0 - fwxp(j,i) ) * wall_s_flux(1) & |
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[183] | 134 | -fwxm(j,i) * 0.5 * & |
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[1] | 135 | ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) & |
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[129] | 136 | + ( 1.0 - fwxm(j,i) ) * wall_s_flux(2) & |
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[1] | 137 | ) * ddx2 & |
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[183] | 138 | + ( fwyp(j,i) * 0.5 * & |
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[1] | 139 | ( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) & |
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[129] | 140 | + ( 1.0 - fwyp(j,i) ) * wall_s_flux(3) & |
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[183] | 141 | -fwym(j,i) * 0.5 * & |
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[1] | 142 | ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) & |
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[129] | 143 | + ( 1.0 - fwym(j,i) ) * wall_s_flux(4) & |
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[1] | 144 | ) * ddy2 |
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| 145 | ENDDO |
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| 146 | ENDIF |
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| 147 | |
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| 148 | ! |
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| 149 | !-- Compute vertical diffusion. In case that surface fluxes have been |
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[19] | 150 | !-- prescribed or computed at bottom and/or top, index k starts/ends at |
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| 151 | !-- nzb+2 or nzt-1, respectively. |
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| 152 | DO k = nzb_diff_s_inner(j,i), nzt_diff |
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[1] | 153 | |
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| 154 | tend(k,j,i) = tend(k,j,i) & |
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| 155 | + 0.5 * ( & |
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| 156 | ( kh(k,j,i) + kh(k+1,j,i) ) * ( s(k+1,j,i)-s(k,j,i) ) * ddzu(k+1) & |
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| 157 | - ( kh(k,j,i) + kh(k-1,j,i) ) * ( s(k,j,i)-s(k-1,j,i) ) * ddzu(k) & |
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| 158 | ) * ddzw(k) |
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| 159 | ENDDO |
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| 160 | |
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| 161 | ! |
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[19] | 162 | !-- Vertical diffusion at the first computational gridpoint along |
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[1] | 163 | !-- z-direction |
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| 164 | IF ( use_surface_fluxes ) THEN |
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| 165 | |
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| 166 | k = nzb_s_inner(j,i)+1 |
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| 167 | |
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| 168 | tend(k,j,i) = tend(k,j,i) & |
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| 169 | + ( 0.5 * ( kh(k,j,i)+kh(k+1,j,i) ) & |
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| 170 | * ( s(k+1,j,i)-s(k,j,i) ) & |
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| 171 | * ddzu(k+1) & |
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[19] | 172 | + s_flux_b(j,i) & |
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[1] | 173 | ) * ddzw(k) |
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| 174 | |
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| 175 | ENDIF |
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| 176 | |
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[19] | 177 | ! |
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| 178 | !-- Vertical diffusion at the last computational gridpoint along |
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| 179 | !-- z-direction |
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| 180 | IF ( use_top_fluxes ) THEN |
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| 181 | |
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| 182 | k = nzt |
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| 183 | |
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| 184 | tend(k,j,i) = tend(k,j,i) & |
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| 185 | + ( - s_flux_t(j,i) & |
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[20] | 186 | - 0.5 * ( kh(k-1,j,i)+kh(k,j,i) ) & |
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| 187 | * ( s(k,j,i)-s(k-1,j,i) ) & |
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| 188 | * ddzu(k) & |
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[19] | 189 | ) * ddzw(k) |
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| 190 | |
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| 191 | ENDIF |
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| 192 | |
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[1] | 193 | ENDDO |
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| 194 | ENDDO |
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| 195 | |
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| 196 | END SUBROUTINE diffusion_s |
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| 197 | |
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| 198 | |
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| 199 | !------------------------------------------------------------------------------! |
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[1015] | 200 | ! Call for all grid points - accelerator version |
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| 201 | !------------------------------------------------------------------------------! |
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| 202 | SUBROUTINE diffusion_s_acc( s, s_flux_b, s_flux_t, wall_s_flux ) |
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| 203 | |
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| 204 | USE arrays_3d |
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| 205 | USE control_parameters |
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| 206 | USE grid_variables |
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| 207 | USE indices |
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| 208 | |
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| 209 | IMPLICIT NONE |
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| 210 | |
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| 211 | INTEGER :: i, j, k |
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| 212 | REAL :: wall_s_flux(0:4) |
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| 213 | REAL, DIMENSION(nysg:nyng,nxlg:nxrg) :: s_flux_b, s_flux_t |
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| 214 | #if defined( __nopointer ) |
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| 215 | REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: s |
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| 216 | #else |
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| 217 | REAL, DIMENSION(:,:,:), POINTER :: s |
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| 218 | #endif |
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| 219 | |
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| 220 | !$acc kernels present( ddzu, ddzw, fwxm, fwxp, fwym, fwyp, kh ) & |
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| 221 | !$acc present( nzb_diff_s_inner, nzb_s_inner, nzb_s_outer, s ) & |
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| 222 | !$acc present( s_flux_b, s_flux_t, tend, wall_s_flux ) & |
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| 223 | !$acc present( wall_w_x, wall_w_y ) |
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| 224 | !$acc loop |
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| 225 | DO i = nxl, nxr |
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| 226 | DO j = nys,nyn |
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| 227 | ! |
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| 228 | !-- Compute horizontal diffusion |
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| 229 | !$acc loop vector( 32 ) |
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| 230 | DO k = 1, nzt |
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| 231 | IF ( k > nzb_s_outer(j,i) ) THEN |
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| 232 | |
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| 233 | tend(k,j,i) = tend(k,j,i) & |
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| 234 | + 0.5 * ( & |
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| 235 | ( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) & |
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| 236 | - ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) & |
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| 237 | ) * ddx2 & |
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| 238 | + 0.5 * ( & |
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| 239 | ( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) & |
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| 240 | - ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) & |
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| 241 | ) * ddy2 |
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| 242 | ENDIF |
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| 243 | ENDDO |
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| 244 | |
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| 245 | ! |
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| 246 | !-- Apply prescribed horizontal wall heatflux where necessary |
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| 247 | !$acc loop vector(32) |
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| 248 | DO k = 1, nzt |
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| 249 | IF ( k > nzb_s_inner(j,i) .AND. k <= nzb_s_outer(j,i) .AND. & |
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| 250 | ( wall_w_x(j,i) /= 0.0 .OR. wall_w_y(j,i) /= 0.0 ) ) & |
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| 251 | THEN |
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| 252 | tend(k,j,i) = tend(k,j,i) & |
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| 253 | + ( fwxp(j,i) * 0.5 * & |
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| 254 | ( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) & |
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| 255 | + ( 1.0 - fwxp(j,i) ) * wall_s_flux(1) & |
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| 256 | -fwxm(j,i) * 0.5 * & |
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| 257 | ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) & |
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| 258 | + ( 1.0 - fwxm(j,i) ) * wall_s_flux(2) & |
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| 259 | ) * ddx2 & |
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| 260 | + ( fwyp(j,i) * 0.5 * & |
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| 261 | ( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) & |
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| 262 | + ( 1.0 - fwyp(j,i) ) * wall_s_flux(3) & |
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| 263 | -fwym(j,i) * 0.5 * & |
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| 264 | ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) & |
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| 265 | + ( 1.0 - fwym(j,i) ) * wall_s_flux(4) & |
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| 266 | ) * ddy2 |
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| 267 | ENDIF |
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| 268 | ENDDO |
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| 269 | |
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| 270 | ! |
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| 271 | !-- Compute vertical diffusion. In case that surface fluxes have been |
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| 272 | !-- prescribed or computed at bottom and/or top, index k starts/ends at |
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| 273 | !-- nzb+2 or nzt-1, respectively. |
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| 274 | !$acc loop vector( 32 ) |
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| 275 | DO k = 1, nzt_diff |
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| 276 | IF ( k >= nzb_diff_s_inner(j,i) ) THEN |
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| 277 | tend(k,j,i) = tend(k,j,i) & |
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| 278 | + 0.5 * ( & |
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| 279 | ( kh(k,j,i) + kh(k+1,j,i) ) * ( s(k+1,j,i)-s(k,j,i) ) * ddzu(k+1) & |
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| 280 | - ( kh(k,j,i) + kh(k-1,j,i) ) * ( s(k,j,i)-s(k-1,j,i) ) * ddzu(k) & |
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| 281 | ) * ddzw(k) |
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| 282 | ENDIF |
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| 283 | ENDDO |
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| 284 | |
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| 285 | ! |
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| 286 | !-- Vertical diffusion at the first computational gridpoint along |
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| 287 | !-- z-direction |
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| 288 | !$acc loop vector( 32 ) |
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| 289 | DO k = 1, nzt |
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| 290 | IF ( use_surface_fluxes .AND. k == nzb_s_inner(j,i)+1 ) THEN |
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| 291 | tend(k,j,i) = tend(k,j,i) & |
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| 292 | + ( 0.5 * ( kh(k,j,i)+kh(k+1,j,i) ) & |
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| 293 | * ( s(k+1,j,i)-s(k,j,i) ) & |
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| 294 | * ddzu(k+1) & |
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| 295 | + s_flux_b(j,i) & |
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| 296 | ) * ddzw(k) |
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| 297 | ENDIF |
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| 298 | |
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| 299 | ! |
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| 300 | !-- Vertical diffusion at the last computational gridpoint along |
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| 301 | !-- z-direction |
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| 302 | IF ( use_top_fluxes .AND. k == nzt ) THEN |
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| 303 | tend(k,j,i) = tend(k,j,i) & |
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| 304 | + ( - s_flux_t(j,i) & |
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| 305 | - 0.5 * ( kh(k-1,j,i)+kh(k,j,i) )& |
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| 306 | * ( s(k,j,i)-s(k-1,j,i) ) & |
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| 307 | * ddzu(k) & |
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| 308 | ) * ddzw(k) |
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| 309 | ENDIF |
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| 310 | ENDDO |
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| 311 | |
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| 312 | ENDDO |
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| 313 | ENDDO |
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| 314 | !$acc end kernels |
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| 315 | |
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| 316 | END SUBROUTINE diffusion_s_acc |
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| 317 | |
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| 318 | |
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| 319 | !------------------------------------------------------------------------------! |
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[1] | 320 | ! Call for grid point i,j |
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| 321 | !------------------------------------------------------------------------------! |
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[1001] | 322 | SUBROUTINE diffusion_s_ij( i, j, s, s_flux_b, s_flux_t, wall_s_flux ) |
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[1] | 323 | |
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[1001] | 324 | USE arrays_3d |
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[1] | 325 | USE control_parameters |
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| 326 | USE grid_variables |
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| 327 | USE indices |
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| 328 | |
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| 329 | IMPLICIT NONE |
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| 330 | |
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| 331 | INTEGER :: i, j, k |
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[129] | 332 | REAL :: wall_s_flux(0:4) |
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[1001] | 333 | REAL, DIMENSION(nysg:nyng,nxlg:nxrg) :: s_flux_b, s_flux_t |
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[1010] | 334 | #if defined( __nopointer ) |
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| 335 | REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: s |
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| 336 | #else |
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[1001] | 337 | REAL, DIMENSION(:,:,:), POINTER :: s |
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[1010] | 338 | #endif |
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[1] | 339 | |
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| 340 | ! |
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| 341 | !-- Compute horizontal diffusion |
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[19] | 342 | DO k = nzb_s_outer(j,i)+1, nzt |
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[1] | 343 | |
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| 344 | tend(k,j,i) = tend(k,j,i) & |
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| 345 | + 0.5 * ( & |
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| 346 | ( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) & |
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| 347 | - ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) & |
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| 348 | ) * ddx2 & |
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| 349 | + 0.5 * ( & |
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| 350 | ( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) & |
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| 351 | - ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) & |
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| 352 | ) * ddy2 |
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| 353 | ENDDO |
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| 354 | |
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| 355 | ! |
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| 356 | !-- Apply prescribed horizontal wall heatflux where necessary |
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| 357 | IF ( ( wall_w_x(j,i) .NE. 0.0 ) .OR. ( wall_w_y(j,i) .NE. 0.0 ) ) & |
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| 358 | THEN |
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| 359 | DO k = nzb_s_inner(j,i)+1, nzb_s_outer(j,i) |
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| 360 | |
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| 361 | tend(k,j,i) = tend(k,j,i) & |
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[183] | 362 | + ( fwxp(j,i) * 0.5 * & |
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[1] | 363 | ( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) & |
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[129] | 364 | + ( 1.0 - fwxp(j,i) ) * wall_s_flux(1) & |
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[183] | 365 | -fwxm(j,i) * 0.5 * & |
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[1] | 366 | ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) & |
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[129] | 367 | + ( 1.0 - fwxm(j,i) ) * wall_s_flux(2) & |
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[1] | 368 | ) * ddx2 & |
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[183] | 369 | + ( fwyp(j,i) * 0.5 * & |
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[1] | 370 | ( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) & |
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[129] | 371 | + ( 1.0 - fwyp(j,i) ) * wall_s_flux(3) & |
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[183] | 372 | -fwym(j,i) * 0.5 * & |
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[1] | 373 | ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) & |
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[129] | 374 | + ( 1.0 - fwym(j,i) ) * wall_s_flux(4) & |
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[1] | 375 | ) * ddy2 |
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| 376 | ENDDO |
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| 377 | ENDIF |
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| 378 | |
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| 379 | ! |
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| 380 | !-- Compute vertical diffusion. In case that surface fluxes have been |
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[19] | 381 | !-- prescribed or computed at bottom and/or top, index k starts/ends at |
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| 382 | !-- nzb+2 or nzt-1, respectively. |
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| 383 | DO k = nzb_diff_s_inner(j,i), nzt_diff |
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[1] | 384 | |
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| 385 | tend(k,j,i) = tend(k,j,i) & |
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| 386 | + 0.5 * ( & |
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| 387 | ( kh(k,j,i) + kh(k+1,j,i) ) * ( s(k+1,j,i)-s(k,j,i) ) * ddzu(k+1) & |
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| 388 | - ( kh(k,j,i) + kh(k-1,j,i) ) * ( s(k,j,i)-s(k-1,j,i) ) * ddzu(k) & |
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| 389 | ) * ddzw(k) |
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| 390 | ENDDO |
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| 391 | |
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| 392 | ! |
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[19] | 393 | !-- Vertical diffusion at the first computational gridpoint along z-direction |
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[1] | 394 | IF ( use_surface_fluxes ) THEN |
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| 395 | |
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| 396 | k = nzb_s_inner(j,i)+1 |
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| 397 | |
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[19] | 398 | tend(k,j,i) = tend(k,j,i) + ( 0.5 * ( kh(k,j,i)+kh(k+1,j,i) ) & |
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| 399 | * ( s(k+1,j,i)-s(k,j,i) ) & |
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| 400 | * ddzu(k+1) & |
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| 401 | + s_flux_b(j,i) & |
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| 402 | ) * ddzw(k) |
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[1] | 403 | |
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| 404 | ENDIF |
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| 405 | |
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[19] | 406 | ! |
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| 407 | !-- Vertical diffusion at the last computational gridpoint along z-direction |
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| 408 | IF ( use_top_fluxes ) THEN |
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| 409 | |
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| 410 | k = nzt |
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| 411 | |
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| 412 | tend(k,j,i) = tend(k,j,i) + ( - s_flux_t(j,i) & |
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| 413 | - 0.5 * ( kh(k-1,j,i)+kh(k,j,i) ) & |
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| 414 | * ( s(k,j,i)-s(k-1,j,i) ) & |
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| 415 | * ddzu(k) & |
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| 416 | ) * ddzw(k) |
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| 417 | |
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| 418 | ENDIF |
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| 419 | |
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[1] | 420 | END SUBROUTINE diffusion_s_ij |
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| 421 | |
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| 422 | END MODULE diffusion_s_mod |
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