| 1 | MODULE diffusion_e_mod |
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| 2 | |
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| 3 | !------------------------------------------------------------------------------! |
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| 4 | ! Current revisions: |
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| 5 | ! ----------------- |
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| 6 | ! accelerator version (*_acc) added, |
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| 7 | ! adjustment of mixing length to the Prandtl mixing length at first grid point |
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| 8 | ! above ground removed |
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| 9 | ! |
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| 10 | ! Former revisions: |
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| 11 | ! ----------------- |
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| 12 | ! $Id: diffusion_e.f90 1015 2012-09-27 09:23:24Z raasch $ |
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| 13 | ! |
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| 14 | ! 1010 2012-09-20 07:59:54Z raasch |
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| 15 | ! cpp switch __nopointer added for pointer free version |
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| 16 | ! |
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| 17 | ! 1001 2012-09-13 14:08:46Z raasch |
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| 18 | ! most arrays comunicated by module instead of parameter list |
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| 19 | ! |
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| 20 | ! 825 2012-02-19 03:03:44Z raasch |
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| 21 | ! wang_collision_kernel renamed wang_kernel |
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| 22 | ! |
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| 23 | ! 790 2011-11-29 03:11:20Z raasch |
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| 24 | ! diss is also calculated in case that the Wang kernel is used |
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| 25 | ! |
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| 26 | ! 667 2010-12-23 12:06:00Z suehring/gryschka |
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| 27 | ! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng |
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| 28 | ! |
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| 29 | ! 97 2007-06-21 08:23:15Z raasch |
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| 30 | ! Adjustment of mixing length calculation for the ocean version. zw added to |
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| 31 | ! argument list. |
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| 32 | ! This is also a bugfix, because the height above the topography is now |
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| 33 | ! used instead of the height above level k=0. |
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| 34 | ! theta renamed var, dpt_dz renamed dvar_dz, +new argument var_reference |
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| 35 | ! use_pt_reference renamed use_reference |
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| 36 | ! |
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| 37 | ! 65 2007-03-13 12:11:43Z raasch |
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| 38 | ! Reference temperature pt_reference can be used in buoyancy term |
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| 39 | ! |
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| 40 | ! 20 2007-02-26 00:12:32Z raasch |
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| 41 | ! Bugfix: ddzw dimensioned 1:nzt"+1" |
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| 42 | ! Calculation extended for gridpoint nzt |
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| 43 | ! |
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| 44 | ! RCS Log replace by Id keyword, revision history cleaned up |
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| 45 | ! |
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| 46 | ! Revision 1.18 2006/08/04 14:29:43 raasch |
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| 47 | ! dissipation is stored in extra array diss if needed later on for calculating |
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| 48 | ! the sgs particle velocities |
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| 49 | ! |
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| 50 | ! Revision 1.1 1997/09/19 07:40:24 raasch |
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| 51 | ! Initial revision |
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| 52 | ! |
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| 53 | ! |
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| 54 | ! Description: |
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| 55 | ! ------------ |
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| 56 | ! Diffusion- and dissipation terms for the TKE |
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| 57 | !------------------------------------------------------------------------------! |
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| 58 | |
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| 59 | PRIVATE |
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| 60 | PUBLIC diffusion_e, diffusion_e_acc |
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| 61 | |
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| 62 | |
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| 63 | INTERFACE diffusion_e |
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| 64 | MODULE PROCEDURE diffusion_e |
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| 65 | MODULE PROCEDURE diffusion_e_ij |
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| 66 | END INTERFACE diffusion_e |
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| 67 | |
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| 68 | INTERFACE diffusion_e_acc |
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| 69 | MODULE PROCEDURE diffusion_e_acc |
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| 70 | END INTERFACE diffusion_e_acc |
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| 71 | |
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| 72 | CONTAINS |
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| 73 | |
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| 74 | |
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| 75 | !------------------------------------------------------------------------------! |
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| 76 | ! Call for all grid points |
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| 77 | !------------------------------------------------------------------------------! |
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| 78 | SUBROUTINE diffusion_e( var, var_reference ) |
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| 79 | |
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| 80 | USE arrays_3d |
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| 81 | USE control_parameters |
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| 82 | USE grid_variables |
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| 83 | USE indices |
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| 84 | USE particle_attributes |
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| 85 | |
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| 86 | IMPLICIT NONE |
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| 87 | |
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| 88 | INTEGER :: i, j, k |
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| 89 | REAL :: dvar_dz, l_stable, var_reference |
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| 90 | |
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| 91 | #if defined( __nopointer ) |
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| 92 | REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var |
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| 93 | #else |
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| 94 | REAL, DIMENSION(:,:,:), POINTER :: var |
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| 95 | #endif |
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| 96 | REAL, DIMENSION(nzb+1:nzt,nys:nyn) :: dissipation, l, ll |
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| 97 | |
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| 98 | |
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| 99 | ! |
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| 100 | !-- This if clause must be outside the k-loop because otherwise |
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| 101 | !-- runtime errors occur with -C hopt on NEC |
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| 102 | IF ( use_reference ) THEN |
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| 103 | |
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| 104 | DO i = nxl, nxr |
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| 105 | DO j = nys, nyn |
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| 106 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 107 | ! |
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| 108 | !-- Calculate the mixing length (for dissipation) |
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| 109 | dvar_dz = atmos_ocean_sign * & |
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| 110 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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| 111 | IF ( dvar_dz > 0.0 ) THEN |
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| 112 | l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 113 | SQRT( g / var_reference * dvar_dz ) + 1E-5 |
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| 114 | ELSE |
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| 115 | l_stable = l_grid(k) |
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| 116 | ENDIF |
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| 117 | ! |
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| 118 | !-- Adjustment of the mixing length |
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| 119 | IF ( wall_adjustment ) THEN |
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| 120 | l(k,j) = MIN( wall_adjustment_factor * & |
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| 121 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 122 | l_grid(k), l_stable ) |
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| 123 | ll(k,j) = MIN( wall_adjustment_factor * & |
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| 124 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 125 | l_grid(k) ) |
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| 126 | ELSE |
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| 127 | l(k,j) = MIN( l_grid(k), l_stable ) |
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| 128 | ll(k,j) = l_grid(k) |
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| 129 | ENDIF |
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| 130 | |
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| 131 | ENDDO |
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| 132 | ENDDO |
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| 133 | |
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| 134 | ! |
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| 135 | !-- Calculate the tendency terms |
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| 136 | DO j = nys, nyn |
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| 137 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 138 | |
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| 139 | dissipation(k,j) = ( 0.19 + 0.74 * l(k,j) / ll(k,j) ) * & |
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| 140 | e(k,j,i) * SQRT( e(k,j,i) ) / l(k,j) |
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| 141 | |
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| 142 | tend(k,j,i) = tend(k,j,i) & |
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| 143 | + ( & |
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| 144 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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| 145 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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| 146 | ) * ddx2 & |
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| 147 | + ( & |
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| 148 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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| 149 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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| 150 | ) * ddy2 & |
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| 151 | + ( & |
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| 152 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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| 153 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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| 154 | ) * ddzw(k) & |
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| 155 | - dissipation(k,j) |
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| 156 | |
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| 157 | ENDDO |
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| 158 | ENDDO |
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| 159 | |
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| 160 | ! |
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| 161 | !-- Store dissipation if needed for calculating the sgs particle |
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| 162 | !-- velocities |
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| 163 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 164 | DO j = nys, nyn |
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| 165 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 166 | diss(k,j,i) = dissipation(k,j) |
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| 167 | ENDDO |
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| 168 | ENDDO |
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| 169 | ENDIF |
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| 170 | |
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| 171 | ENDDO |
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| 172 | |
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| 173 | ELSE |
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| 174 | |
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| 175 | DO i = nxl, nxr |
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| 176 | DO j = nys, nyn |
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| 177 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 178 | ! |
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| 179 | !-- Calculate the mixing length (for dissipation) |
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| 180 | dvar_dz = atmos_ocean_sign * & |
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| 181 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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| 182 | IF ( dvar_dz > 0.0 ) THEN |
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| 183 | l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 184 | SQRT( g / var(k,j,i) * dvar_dz ) + 1E-5 |
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| 185 | ELSE |
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| 186 | l_stable = l_grid(k) |
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| 187 | ENDIF |
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| 188 | ! |
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| 189 | !-- Adjustment of the mixing length |
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| 190 | IF ( wall_adjustment ) THEN |
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| 191 | l(k,j) = MIN( wall_adjustment_factor * & |
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| 192 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 193 | l_grid(k), l_stable ) |
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| 194 | ll(k,j) = MIN( wall_adjustment_factor * & |
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| 195 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 196 | l_grid(k) ) |
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| 197 | ELSE |
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| 198 | l(k,j) = MIN( l_grid(k), l_stable ) |
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| 199 | ll(k,j) = l_grid(k) |
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| 200 | ENDIF |
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| 201 | |
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| 202 | ENDDO |
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| 203 | ENDDO |
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| 204 | |
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| 205 | ! |
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| 206 | !-- Calculate the tendency terms |
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| 207 | DO j = nys, nyn |
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| 208 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 209 | |
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| 210 | dissipation(k,j) = ( 0.19 + 0.74 * l(k,j) / ll(k,j) ) * & |
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| 211 | e(k,j,i) * SQRT( e(k,j,i) ) / l(k,j) |
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| 212 | |
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| 213 | tend(k,j,i) = tend(k,j,i) & |
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| 214 | + ( & |
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| 215 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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| 216 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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| 217 | ) * ddx2 & |
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| 218 | + ( & |
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| 219 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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| 220 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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| 221 | ) * ddy2 & |
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| 222 | + ( & |
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| 223 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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| 224 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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| 225 | ) * ddzw(k) & |
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| 226 | - dissipation(k,j) |
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| 227 | |
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| 228 | ENDDO |
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| 229 | ENDDO |
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| 230 | |
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| 231 | ! |
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| 232 | !-- Store dissipation if needed for calculating the sgs particle |
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| 233 | !-- velocities |
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| 234 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 235 | DO j = nys, nyn |
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| 236 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 237 | diss(k,j,i) = dissipation(k,j) |
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| 238 | ENDDO |
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| 239 | ENDDO |
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| 240 | ENDIF |
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| 241 | |
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| 242 | ENDDO |
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| 243 | |
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| 244 | ENDIF |
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| 245 | |
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| 246 | ! |
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| 247 | !-- Boundary condition for dissipation |
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| 248 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 249 | DO i = nxl, nxr |
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| 250 | DO j = nys, nyn |
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| 251 | diss(nzb_s_inner(j,i),j,i) = diss(nzb_s_inner(j,i)+1,j,i) |
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| 252 | ENDDO |
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| 253 | ENDDO |
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| 254 | ENDIF |
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| 255 | |
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| 256 | END SUBROUTINE diffusion_e |
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| 257 | |
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| 258 | |
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| 259 | !------------------------------------------------------------------------------! |
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| 260 | ! Call for all grid points - accelerator version |
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| 261 | !------------------------------------------------------------------------------! |
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| 262 | SUBROUTINE diffusion_e_acc( var, var_reference ) |
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| 263 | |
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| 264 | USE arrays_3d |
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| 265 | USE control_parameters |
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| 266 | USE grid_variables |
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| 267 | USE indices |
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| 268 | USE particle_attributes |
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| 269 | |
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| 270 | IMPLICIT NONE |
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| 271 | |
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| 272 | INTEGER :: i, j, k |
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| 273 | REAL :: dissipation, dvar_dz, l, ll, l_stable, var_reference |
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| 274 | |
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| 275 | #if defined( __nopointer ) |
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| 276 | REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var |
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| 277 | #else |
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| 278 | REAL, DIMENSION(:,:,:), POINTER :: var |
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| 279 | #endif |
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| 280 | |
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| 281 | |
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| 282 | ! |
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| 283 | !-- This if clause must be outside the k-loop because otherwise |
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| 284 | !-- runtime errors occur with -C hopt on NEC |
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| 285 | IF ( use_reference ) THEN |
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| 286 | STOP '+++ use_reference in diffusion_e not implemented' |
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| 287 | ! DO i = nxl, nxr |
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| 288 | ! DO j = nys, nyn |
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| 289 | ! DO k = nzb_s_inner(j,i)+1, nzt |
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| 290 | ! |
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| 291 | !-- Calculate the mixing length (for dissipation) |
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| 292 | ! dvar_dz = atmos_ocean_sign * & |
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| 293 | ! ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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| 294 | ! IF ( dvar_dz > 0.0 ) THEN |
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| 295 | ! l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 296 | ! SQRT( g / var_reference * dvar_dz ) + 1E-5 |
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| 297 | ! ELSE |
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| 298 | ! l_stable = l_grid(k) |
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| 299 | ! ENDIF |
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| 300 | ! |
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| 301 | !-- Adjustment of the mixing length |
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| 302 | ! IF ( wall_adjustment ) THEN |
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| 303 | ! l(k,j) = MIN( wall_adjustment_factor * & |
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| 304 | ! ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 305 | ! l_grid(k), l_stable ) |
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| 306 | ! ll(k,j) = MIN( wall_adjustment_factor * & |
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| 307 | ! ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 308 | ! l_grid(k) ) |
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| 309 | ! ELSE |
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| 310 | ! l(k,j) = MIN( l_grid(k), l_stable ) |
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| 311 | ! ll(k,j) = l_grid(k) |
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| 312 | ! ENDIF |
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| 313 | ! |
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| 314 | ! ENDDO |
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| 315 | ! ENDDO |
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| 316 | ! |
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| 317 | ! |
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| 318 | !-- Calculate the tendency terms |
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| 319 | ! DO j = nys, nyn |
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| 320 | ! DO k = nzb_s_inner(j,i)+1, nzt |
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| 321 | ! |
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| 322 | ! dissipation(k,j) = ( 0.19 + 0.74 * l(k,j) / ll(k,j) ) * & |
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| 323 | ! e(k,j,i) * SQRT( e(k,j,i) ) / l(k,j) |
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| 324 | ! |
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| 325 | ! tend(k,j,i) = tend(k,j,i) & |
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| 326 | ! + ( & |
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| 327 | ! ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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| 328 | ! - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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| 329 | ! ) * ddx2 & |
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| 330 | ! + ( & |
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| 331 | ! ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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| 332 | ! - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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| 333 | ! ) * ddy2 & |
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| 334 | ! + ( & |
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| 335 | ! ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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| 336 | ! - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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| 337 | ! ) * ddzw(k) & |
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| 338 | ! - dissipation(k,j) |
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| 339 | ! |
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| 340 | ! ENDDO |
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| 341 | ! ENDDO |
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| 342 | ! |
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| 343 | ! |
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| 344 | !-- Store dissipation if needed for calculating the sgs particle |
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| 345 | !-- velocities |
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| 346 | ! IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 347 | ! DO j = nys, nyn |
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| 348 | ! DO k = nzb_s_inner(j,i)+1, nzt |
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| 349 | ! diss(k,j,i) = dissipation(k,j) |
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| 350 | ! ENDDO |
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| 351 | ! ENDDO |
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| 352 | ! ENDIF |
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| 353 | ! |
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| 354 | ! ENDDO |
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| 355 | ! |
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| 356 | ELSE |
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| 357 | |
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| 358 | !$acc kernels present( ddzu, ddzw, dd2zu, diss, e, km, l_grid ) & |
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| 359 | !$acc present( nzb_s_inner, rif, tend, var, zu, zw ) |
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| 360 | !$acc loop |
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| 361 | DO i = nxl, nxr |
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| 362 | DO j = nys, nyn |
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| 363 | !$acc loop vector( 32 ) |
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| 364 | DO k = 1, nzt |
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| 365 | |
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| 366 | IF ( k > nzb_s_inner(j,i) ) THEN |
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| 367 | ! |
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| 368 | !-- Calculate the mixing length (for dissipation) |
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| 369 | dvar_dz = atmos_ocean_sign * & |
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| 370 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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| 371 | IF ( dvar_dz > 0.0 ) THEN |
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| 372 | l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 373 | SQRT( g / var(k,j,i) * dvar_dz ) + 1E-5 |
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| 374 | ELSE |
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| 375 | l_stable = l_grid(k) |
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| 376 | ENDIF |
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| 377 | ! |
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| 378 | !-- Adjustment of the mixing length |
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| 379 | IF ( wall_adjustment ) THEN |
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| 380 | l = MIN( wall_adjustment_factor * & |
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| 381 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 382 | l_grid(k), l_stable ) |
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| 383 | ll = MIN( wall_adjustment_factor * & |
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| 384 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 385 | l_grid(k) ) |
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| 386 | ELSE |
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| 387 | l = MIN( l_grid(k), l_stable ) |
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| 388 | ll = l_grid(k) |
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| 389 | ENDIF |
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| 390 | ! |
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| 391 | !-- Calculate the tendency terms |
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| 392 | dissipation = ( 0.19 + 0.74 * l / ll ) * & |
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| 393 | e(k,j,i) * SQRT( e(k,j,i) ) / l |
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| 394 | |
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| 395 | tend(k,j,i) = tend(k,j,i) & |
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| 396 | + ( & |
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| 397 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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| 398 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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| 399 | ) * ddx2 & |
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| 400 | + ( & |
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| 401 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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| 402 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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| 403 | ) * ddy2 & |
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| 404 | + ( & |
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| 405 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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| 406 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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| 407 | ) * ddzw(k) & |
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| 408 | - dissipation |
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| 409 | |
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| 410 | ! |
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| 411 | !-- Store dissipation if needed for calculating the sgs |
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| 412 | !-- particle velocities |
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| 413 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 414 | diss(k,j,i) = dissipation |
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| 415 | ENDIF |
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| 416 | |
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| 417 | ENDIF |
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| 418 | |
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| 419 | ENDDO |
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| 420 | ENDDO |
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| 421 | ENDDO |
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| 422 | !$acc end kernels |
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| 423 | |
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| 424 | ENDIF |
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| 425 | |
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| 426 | ! |
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| 427 | !-- Boundary condition for dissipation |
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| 428 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 429 | !$acc kernels present( diss, nzb_s_inner ) |
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| 430 | !$acc loop |
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| 431 | DO i = nxl, nxr |
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| 432 | !$acc loop vector( 32 ) |
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| 433 | DO j = nys, nyn |
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| 434 | diss(nzb_s_inner(j,i),j,i) = diss(nzb_s_inner(j,i)+1,j,i) |
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| 435 | ENDDO |
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| 436 | ENDDO |
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| 437 | !$acc end kernels |
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| 438 | ENDIF |
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| 439 | |
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| 440 | END SUBROUTINE diffusion_e_acc |
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| 441 | |
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| 442 | |
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| 443 | !------------------------------------------------------------------------------! |
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| 444 | ! Call for grid point i,j |
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| 445 | !------------------------------------------------------------------------------! |
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| 446 | SUBROUTINE diffusion_e_ij( i, j, var, var_reference ) |
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| 447 | |
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| 448 | USE arrays_3d |
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| 449 | USE control_parameters |
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| 450 | USE grid_variables |
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| 451 | USE indices |
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| 452 | USE particle_attributes |
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| 453 | |
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| 454 | IMPLICIT NONE |
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| 455 | |
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| 456 | INTEGER :: i, j, k |
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| 457 | REAL :: dvar_dz, l_stable, var_reference |
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| 458 | |
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| 459 | #if defined( __nopointer ) |
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| 460 | REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var |
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| 461 | #else |
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| 462 | REAL, DIMENSION(:,:,:), POINTER :: var |
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| 463 | #endif |
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| 464 | REAL, DIMENSION(nzb+1:nzt) :: dissipation, l, ll |
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| 465 | |
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| 466 | |
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| 467 | ! |
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| 468 | !-- Calculate the mixing length (for dissipation) |
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| 469 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 470 | dvar_dz = atmos_ocean_sign * & |
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| 471 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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| 472 | IF ( dvar_dz > 0.0 ) THEN |
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| 473 | IF ( use_reference ) THEN |
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| 474 | l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 475 | SQRT( g / var_reference * dvar_dz ) + 1E-5 |
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| 476 | ELSE |
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| 477 | l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 478 | SQRT( g / var(k,j,i) * dvar_dz ) + 1E-5 |
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| 479 | ENDIF |
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| 480 | ELSE |
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| 481 | l_stable = l_grid(k) |
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| 482 | ENDIF |
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| 483 | ! |
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| 484 | !-- Adjustment of the mixing length |
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| 485 | IF ( wall_adjustment ) THEN |
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| 486 | l(k) = MIN( wall_adjustment_factor * & |
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| 487 | ( zu(k) - zw(nzb_s_inner(j,i)) ), l_grid(k), & |
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| 488 | l_stable ) |
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| 489 | ll(k) = MIN( wall_adjustment_factor * & |
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| 490 | ( zu(k) - zw(nzb_s_inner(j,i)) ), l_grid(k) ) |
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| 491 | ELSE |
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| 492 | l(k) = MIN( l_grid(k), l_stable ) |
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| 493 | ll(k) = l_grid(k) |
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| 494 | ENDIF |
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| 495 | ! |
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| 496 | !-- Calculate the tendency term |
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| 497 | dissipation(k) = ( 0.19 + 0.74 * l(k) / ll(k) ) * e(k,j,i) * & |
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| 498 | SQRT( e(k,j,i) ) / l(k) |
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| 499 | |
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| 500 | tend(k,j,i) = tend(k,j,i) & |
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| 501 | + ( & |
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| 502 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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| 503 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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| 504 | ) * ddx2 & |
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| 505 | + ( & |
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| 506 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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| 507 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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| 508 | ) * ddy2 & |
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| 509 | + ( & |
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| 510 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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| 511 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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| 512 | ) * ddzw(k) & |
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| 513 | - dissipation(k) |
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| 514 | |
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| 515 | ENDDO |
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| 516 | |
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| 517 | ! |
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| 518 | !-- Store dissipation if needed for calculating the sgs particle velocities |
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| 519 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 520 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 521 | diss(k,j,i) = dissipation(k) |
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| 522 | ENDDO |
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| 523 | ! |
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| 524 | !-- Boundary condition for dissipation |
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| 525 | diss(nzb_s_inner(j,i),j,i) = diss(nzb_s_inner(j,i)+1,j,i) |
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| 526 | ENDIF |
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| 527 | |
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| 528 | END SUBROUTINE diffusion_e_ij |
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| 529 | |
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| 530 | END MODULE diffusion_e_mod |
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