[1] | 1 | MODULE diffusion_s_mod |
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| 2 | |
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| 3 | !------------------------------------------------------------------------------! |
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[484] | 4 | ! Current revisions: |
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[1001] | 5 | ! ------------------ |
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| 6 | ! some arrays comunicated by module instead of parameter list |
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[1] | 7 | ! |
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| 8 | ! Former revisions: |
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| 9 | ! ----------------- |
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[3] | 10 | ! $Id: diffusion_s.f90 1001 2012-09-13 14:08:46Z raasch $ |
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[39] | 11 | ! |
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[668] | 12 | ! 667 2010-12-23 12:06:00Z suehring/gryschka |
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| 13 | ! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng |
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| 14 | ! |
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[198] | 15 | ! 183 2008-08-04 15:39:12Z letzel |
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| 16 | ! bugfix: calculation of fluxes at vertical surfaces |
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| 17 | ! |
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[139] | 18 | ! 129 2007-10-30 12:12:24Z letzel |
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| 19 | ! replace wall_heatflux by wall_s_flux that is now included in the parameter |
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| 20 | ! list, bugfix for assignment of fluxes at walls |
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| 21 | ! |
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[39] | 22 | ! 20 2007-02-26 00:12:32Z raasch |
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| 23 | ! Bugfix: ddzw dimensioned 1:nzt"+1" |
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| 24 | ! Calculation extended for gridpoint nzt, fluxes can be given at top, |
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| 25 | ! +s_flux_t in parameter list, s_flux renamed s_flux_b |
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| 26 | ! |
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[3] | 27 | ! RCS Log replace by Id keyword, revision history cleaned up |
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| 28 | ! |
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[1] | 29 | ! Revision 1.8 2006/02/23 10:34:17 raasch |
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| 30 | ! nzb_2d replaced by nzb_s_outer in horizontal diffusion and by nzb_s_inner |
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| 31 | ! or nzb_diff_s_inner, respectively, in vertical diffusion, prescribed surface |
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| 32 | ! fluxes at vertically oriented topography |
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| 33 | ! |
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| 34 | ! Revision 1.1 2000/04/13 14:54:02 schroeter |
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| 35 | ! Initial revision |
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| 36 | ! |
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| 37 | ! |
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| 38 | ! Description: |
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| 39 | ! ------------ |
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| 40 | ! Diffusion term of scalar quantities (temperature and water content) |
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| 41 | !------------------------------------------------------------------------------! |
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| 42 | |
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| 43 | PRIVATE |
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| 44 | PUBLIC diffusion_s |
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| 45 | |
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| 46 | INTERFACE diffusion_s |
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| 47 | MODULE PROCEDURE diffusion_s |
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| 48 | MODULE PROCEDURE diffusion_s_ij |
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| 49 | END INTERFACE diffusion_s |
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| 50 | |
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| 51 | CONTAINS |
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| 52 | |
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| 53 | |
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| 54 | !------------------------------------------------------------------------------! |
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| 55 | ! Call for all grid points |
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| 56 | !------------------------------------------------------------------------------! |
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[1001] | 57 | SUBROUTINE diffusion_s( s, s_flux_b, s_flux_t, wall_s_flux ) |
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[1] | 58 | |
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[1001] | 59 | USE arrays_3d |
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[1] | 60 | USE control_parameters |
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| 61 | USE grid_variables |
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| 62 | USE indices |
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| 63 | |
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| 64 | IMPLICIT NONE |
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| 65 | |
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| 66 | INTEGER :: i, j, k |
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| 67 | REAL :: vertical_gridspace |
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[129] | 68 | REAL :: wall_s_flux(0:4) |
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[1001] | 69 | REAL, DIMENSION(nysg:nyng,nxlg:nxrg) :: s_flux_b, s_flux_t |
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| 70 | REAL, DIMENSION(:,:,:), POINTER :: s |
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[1] | 71 | |
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| 72 | DO i = nxl, nxr |
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| 73 | DO j = nys,nyn |
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| 74 | ! |
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| 75 | !-- Compute horizontal diffusion |
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[19] | 76 | DO k = nzb_s_outer(j,i)+1, nzt |
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[1] | 77 | |
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| 78 | tend(k,j,i) = tend(k,j,i) & |
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| 79 | + 0.5 * ( & |
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| 80 | ( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) & |
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| 81 | - ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) & |
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| 82 | ) * ddx2 & |
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| 83 | + 0.5 * ( & |
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| 84 | ( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) & |
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| 85 | - ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) & |
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| 86 | ) * ddy2 |
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| 87 | ENDDO |
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| 88 | |
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| 89 | ! |
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| 90 | !-- Apply prescribed horizontal wall heatflux where necessary |
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| 91 | IF ( ( wall_w_x(j,i) .NE. 0.0 ) .OR. ( wall_w_y(j,i) .NE. 0.0 ) ) & |
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| 92 | THEN |
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| 93 | DO k = nzb_s_inner(j,i)+1, nzb_s_outer(j,i) |
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| 94 | |
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| 95 | tend(k,j,i) = tend(k,j,i) & |
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[183] | 96 | + ( fwxp(j,i) * 0.5 * & |
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[1] | 97 | ( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) & |
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[129] | 98 | + ( 1.0 - fwxp(j,i) ) * wall_s_flux(1) & |
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[183] | 99 | -fwxm(j,i) * 0.5 * & |
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[1] | 100 | ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) & |
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[129] | 101 | + ( 1.0 - fwxm(j,i) ) * wall_s_flux(2) & |
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[1] | 102 | ) * ddx2 & |
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[183] | 103 | + ( fwyp(j,i) * 0.5 * & |
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[1] | 104 | ( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) & |
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[129] | 105 | + ( 1.0 - fwyp(j,i) ) * wall_s_flux(3) & |
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[183] | 106 | -fwym(j,i) * 0.5 * & |
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[1] | 107 | ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) & |
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[129] | 108 | + ( 1.0 - fwym(j,i) ) * wall_s_flux(4) & |
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[1] | 109 | ) * ddy2 |
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| 110 | ENDDO |
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| 111 | ENDIF |
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| 112 | |
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| 113 | ! |
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| 114 | !-- Compute vertical diffusion. In case that surface fluxes have been |
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[19] | 115 | !-- prescribed or computed at bottom and/or top, index k starts/ends at |
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| 116 | !-- nzb+2 or nzt-1, respectively. |
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| 117 | DO k = nzb_diff_s_inner(j,i), nzt_diff |
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[1] | 118 | |
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| 119 | tend(k,j,i) = tend(k,j,i) & |
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| 120 | + 0.5 * ( & |
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| 121 | ( 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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| 122 | - ( kh(k,j,i) + kh(k-1,j,i) ) * ( s(k,j,i)-s(k-1,j,i) ) * ddzu(k) & |
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| 123 | ) * ddzw(k) |
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| 124 | ENDDO |
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| 125 | |
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| 126 | ! |
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[19] | 127 | !-- Vertical diffusion at the first computational gridpoint along |
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[1] | 128 | !-- z-direction |
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| 129 | IF ( use_surface_fluxes ) THEN |
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| 130 | |
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| 131 | k = nzb_s_inner(j,i)+1 |
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| 132 | |
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| 133 | tend(k,j,i) = tend(k,j,i) & |
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| 134 | + ( 0.5 * ( kh(k,j,i)+kh(k+1,j,i) ) & |
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| 135 | * ( s(k+1,j,i)-s(k,j,i) ) & |
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| 136 | * ddzu(k+1) & |
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[19] | 137 | + s_flux_b(j,i) & |
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[1] | 138 | ) * ddzw(k) |
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| 139 | |
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| 140 | ENDIF |
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| 141 | |
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[19] | 142 | ! |
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| 143 | !-- Vertical diffusion at the last computational gridpoint along |
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| 144 | !-- z-direction |
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| 145 | IF ( use_top_fluxes ) THEN |
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| 146 | |
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| 147 | k = nzt |
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| 148 | |
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| 149 | tend(k,j,i) = tend(k,j,i) & |
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| 150 | + ( - s_flux_t(j,i) & |
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[20] | 151 | - 0.5 * ( kh(k-1,j,i)+kh(k,j,i) ) & |
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| 152 | * ( s(k,j,i)-s(k-1,j,i) ) & |
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| 153 | * ddzu(k) & |
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[19] | 154 | ) * ddzw(k) |
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| 155 | |
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| 156 | ENDIF |
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| 157 | |
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[1] | 158 | ENDDO |
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| 159 | ENDDO |
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| 160 | |
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| 161 | END SUBROUTINE diffusion_s |
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| 162 | |
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| 163 | |
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| 164 | !------------------------------------------------------------------------------! |
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| 165 | ! Call for grid point i,j |
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| 166 | !------------------------------------------------------------------------------! |
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[1001] | 167 | SUBROUTINE diffusion_s_ij( i, j, s, s_flux_b, s_flux_t, wall_s_flux ) |
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[1] | 168 | |
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[1001] | 169 | USE arrays_3d |
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[1] | 170 | USE control_parameters |
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| 171 | USE grid_variables |
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| 172 | USE indices |
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| 173 | |
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| 174 | IMPLICIT NONE |
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| 175 | |
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| 176 | INTEGER :: i, j, k |
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| 177 | REAL :: vertical_gridspace |
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[129] | 178 | REAL :: wall_s_flux(0:4) |
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[1001] | 179 | REAL, DIMENSION(nysg:nyng,nxlg:nxrg) :: s_flux_b, s_flux_t |
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| 180 | REAL, DIMENSION(:,:,:), POINTER :: s |
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[1] | 181 | |
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| 182 | ! |
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| 183 | !-- Compute horizontal diffusion |
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[19] | 184 | DO k = nzb_s_outer(j,i)+1, nzt |
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[1] | 185 | |
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| 186 | tend(k,j,i) = tend(k,j,i) & |
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| 187 | + 0.5 * ( & |
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| 188 | ( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) & |
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| 189 | - ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) & |
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| 190 | ) * ddx2 & |
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| 191 | + 0.5 * ( & |
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| 192 | ( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) & |
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| 193 | - ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) & |
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| 194 | ) * ddy2 |
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| 195 | ENDDO |
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| 196 | |
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| 197 | ! |
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| 198 | !-- Apply prescribed horizontal wall heatflux where necessary |
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| 199 | IF ( ( wall_w_x(j,i) .NE. 0.0 ) .OR. ( wall_w_y(j,i) .NE. 0.0 ) ) & |
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| 200 | THEN |
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| 201 | DO k = nzb_s_inner(j,i)+1, nzb_s_outer(j,i) |
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| 202 | |
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| 203 | tend(k,j,i) = tend(k,j,i) & |
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[183] | 204 | + ( fwxp(j,i) * 0.5 * & |
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[1] | 205 | ( kh(k,j,i) + kh(k,j,i+1) ) * ( s(k,j,i+1)-s(k,j,i) ) & |
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[129] | 206 | + ( 1.0 - fwxp(j,i) ) * wall_s_flux(1) & |
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[183] | 207 | -fwxm(j,i) * 0.5 * & |
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[1] | 208 | ( kh(k,j,i) + kh(k,j,i-1) ) * ( s(k,j,i)-s(k,j,i-1) ) & |
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[129] | 209 | + ( 1.0 - fwxm(j,i) ) * wall_s_flux(2) & |
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[1] | 210 | ) * ddx2 & |
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[183] | 211 | + ( fwyp(j,i) * 0.5 * & |
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[1] | 212 | ( kh(k,j,i) + kh(k,j+1,i) ) * ( s(k,j+1,i)-s(k,j,i) ) & |
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[129] | 213 | + ( 1.0 - fwyp(j,i) ) * wall_s_flux(3) & |
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[183] | 214 | -fwym(j,i) * 0.5 * & |
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[1] | 215 | ( kh(k,j,i) + kh(k,j-1,i) ) * ( s(k,j,i)-s(k,j-1,i) ) & |
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[129] | 216 | + ( 1.0 - fwym(j,i) ) * wall_s_flux(4) & |
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[1] | 217 | ) * ddy2 |
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| 218 | ENDDO |
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| 219 | ENDIF |
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| 220 | |
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| 221 | ! |
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| 222 | !-- Compute vertical diffusion. In case that surface fluxes have been |
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[19] | 223 | !-- prescribed or computed at bottom and/or top, index k starts/ends at |
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| 224 | !-- nzb+2 or nzt-1, respectively. |
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| 225 | DO k = nzb_diff_s_inner(j,i), nzt_diff |
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[1] | 226 | |
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| 227 | tend(k,j,i) = tend(k,j,i) & |
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| 228 | + 0.5 * ( & |
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| 229 | ( 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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| 230 | - ( kh(k,j,i) + kh(k-1,j,i) ) * ( s(k,j,i)-s(k-1,j,i) ) * ddzu(k) & |
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| 231 | ) * ddzw(k) |
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| 232 | ENDDO |
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| 233 | |
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| 234 | ! |
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[19] | 235 | !-- Vertical diffusion at the first computational gridpoint along z-direction |
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[1] | 236 | IF ( use_surface_fluxes ) THEN |
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| 237 | |
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| 238 | k = nzb_s_inner(j,i)+1 |
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| 239 | |
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[19] | 240 | tend(k,j,i) = tend(k,j,i) + ( 0.5 * ( kh(k,j,i)+kh(k+1,j,i) ) & |
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| 241 | * ( s(k+1,j,i)-s(k,j,i) ) & |
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| 242 | * ddzu(k+1) & |
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| 243 | + s_flux_b(j,i) & |
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| 244 | ) * ddzw(k) |
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[1] | 245 | |
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| 246 | ENDIF |
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| 247 | |
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[19] | 248 | ! |
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| 249 | !-- Vertical diffusion at the last computational gridpoint along z-direction |
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| 250 | IF ( use_top_fluxes ) THEN |
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| 251 | |
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| 252 | k = nzt |
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| 253 | |
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| 254 | tend(k,j,i) = tend(k,j,i) + ( - s_flux_t(j,i) & |
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| 255 | - 0.5 * ( kh(k-1,j,i)+kh(k,j,i) ) & |
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| 256 | * ( s(k,j,i)-s(k-1,j,i) ) & |
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| 257 | * ddzu(k) & |
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| 258 | ) * ddzw(k) |
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| 259 | |
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| 260 | ENDIF |
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| 261 | |
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[1] | 262 | END SUBROUTINE diffusion_s_ij |
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| 263 | |
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| 264 | END MODULE diffusion_s_mod |
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