[1] | 1 | MODULE buoyancy_mod |
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| 2 | |
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| 3 | !------------------------------------------------------------------------------! |
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| 4 | ! Actual revisions: |
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| 5 | ! ----------------- |
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| 6 | ! |
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| 7 | ! |
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| 8 | ! Former revisions: |
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| 9 | ! ----------------- |
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| 10 | ! $Log: buoyancy.f90,v $ |
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| 11 | ! Revision 1.19 2006/04/26 12:09:56 raasch |
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| 12 | ! OpenMP optimization (one dimension added to sums_l) |
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| 13 | ! |
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| 14 | ! Revision 1.18 2006/02/23 09:55:33 raasch |
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| 15 | ! nzb_2d replaced by nzb_s_inner/outer, nanz_2dh(0) replaced by |
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| 16 | ! ngp_2dh_outer(:,0) |
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| 17 | ! |
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| 18 | ! Revision 1.17 2005/12/06 15:29:16 raasch |
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| 19 | ! Mean pt profile is calculated only in case of the first intermediate timestep |
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| 20 | ! |
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| 21 | ! Revision 1.16 2004/01/30 10:14:31 raasch |
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| 22 | ! Scalar lower k index nzb replaced by 2d-array nzb_2d |
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| 23 | ! |
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| 24 | ! Revision 1.15 2003/10/29 08:41:47 raasch |
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| 25 | ! Horizontal mean temperature is now taken from array hom instead of array sums |
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| 26 | ! |
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| 27 | ! Revision 1.14 2003/03/16 09:27:22 raasch |
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| 28 | ! Two underscores (_) are placed in front of all define-strings |
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| 29 | ! |
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| 30 | ! Revision 1.13 2003/03/12 16:20:47 raasch |
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| 31 | ! Full code replaced in the call for all gridpoints instead of calling the |
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| 32 | ! _ij version (required by NEC, because otherwise no vectorization) |
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| 33 | ! |
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| 34 | ! Revision 1.12 2002/12/19 13:47:38 raasch |
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| 35 | ! STOP statement replaced by call of subroutine local_stop |
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| 36 | ! |
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| 37 | ! Revision 1.11 2002/06/11 12:33:07 raasch |
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| 38 | ! Former subroutine changed to a module which allows to be called for all grid |
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| 39 | ! points of a single vertical column with index i,j or for all grid points by |
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| 40 | ! using function overloading. |
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| 41 | ! Calculation of the horizontally averaged temperature profile moved to new |
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| 42 | ! subroutine calc_mean_pt_profile, which is part of this module. |
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| 43 | ! |
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| 44 | ! Revision 1.10 2001/03/30 06:54:56 raasch |
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| 45 | ! Translation of remaining German identifiers (variables, subroutines, etc.) |
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| 46 | ! |
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| 47 | ! Revision 1.9 2001/01/22 05:27:03 raasch |
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| 48 | ! Module test_variables removed |
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| 49 | ! |
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| 50 | ! Revision 1.8 2000/07/03 12:55:56 raasch |
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| 51 | ! Argument theta declared as pointer |
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| 52 | ! |
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| 53 | ! Revision 1.7 2000/04/27 07:04:19 raasch |
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| 54 | ! in case of a sloping surface the temperature difference is computed relative |
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| 55 | ! to the initial (2D) temperature field |
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| 56 | ! |
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| 57 | ! Revision 1.6 2000/04/13 14:27:34 schroeter |
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| 58 | ! considering the influence of humidity to the buoyancy term |
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| 59 | ! (only for sloping_surface = false), |
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| 60 | ! |
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| 61 | ! Revision 1.5 2000/01/21 16:17:23 16:17:23 letzel (Marcus Letzel) |
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| 62 | ! All comments translated into English |
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| 63 | ! |
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| 64 | ! Revision 1.4 1998/09/22 17:16:22 raasch |
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| 65 | ! Auftriebsterm erweitert fuer Rechnungen mit geneigter Ebene |
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| 66 | ! |
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| 67 | ! Revision 1.3 1998/07/06 12:07:27 raasch |
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| 68 | ! + USE test_variables |
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| 69 | ! |
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| 70 | ! Revision 1.2 1998/03/30 11:33:29 raasch |
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| 71 | ! nanz_2dh in nanz_2dh(0) geaendert |
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| 72 | ! |
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| 73 | ! Revision 1.1 1997/08/29 08:56:48 raasch |
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| 74 | ! Initial revision |
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| 75 | ! |
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| 76 | ! |
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| 77 | ! Description: |
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| 78 | ! ------------ |
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| 79 | ! Buoyancy term of the third component of the equation of motion. |
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| 80 | ! WARNING: humidity is not regarded when using a sloping surface! |
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| 81 | !------------------------------------------------------------------------------! |
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| 82 | |
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| 83 | PRIVATE |
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| 84 | PUBLIC buoyancy, calc_mean_pt_profile |
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| 85 | |
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| 86 | INTERFACE buoyancy |
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| 87 | MODULE PROCEDURE buoyancy |
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| 88 | MODULE PROCEDURE buoyancy_ij |
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| 89 | END INTERFACE buoyancy |
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| 90 | |
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| 91 | INTERFACE calc_mean_pt_profile |
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| 92 | MODULE PROCEDURE calc_mean_pt_profile |
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| 93 | END INTERFACE calc_mean_pt_profile |
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| 94 | |
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| 95 | CONTAINS |
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| 96 | |
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| 97 | |
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| 98 | !------------------------------------------------------------------------------! |
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| 99 | ! Call for all grid points |
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| 100 | !------------------------------------------------------------------------------! |
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| 101 | SUBROUTINE buoyancy( theta, wind_component, pr ) |
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| 102 | |
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| 103 | USE arrays_3d |
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| 104 | USE control_parameters |
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| 105 | USE indices |
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| 106 | USE pegrid |
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| 107 | USE statistics |
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| 108 | |
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| 109 | IMPLICIT NONE |
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| 110 | |
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| 111 | INTEGER :: i, j, k, pr, wind_component |
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| 112 | REAL, DIMENSION(:,:,:), POINTER :: theta |
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| 113 | |
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| 114 | |
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| 115 | IF ( .NOT. sloping_surface ) THEN |
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| 116 | ! |
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| 117 | !-- Normal case: horizontal surface |
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| 118 | DO i = nxl, nxr |
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| 119 | DO j = nys, nyn |
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| 120 | DO k = nzb_s_inner(j,i)+1, nzt-1 |
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| 121 | tend(k,j,i) = tend(k,j,i) + g * 0.5 * ( & |
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| 122 | ( theta(k,j,i) - hom(k,1,pr,0) ) / hom(k,1,pr,0) + & |
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| 123 | ( theta(k+1,j,i) - hom(k+1,1,pr,0) ) / hom(k+1,1,pr,0) & |
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| 124 | ) |
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| 125 | ENDDO |
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| 126 | ENDDO |
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| 127 | ENDDO |
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| 128 | |
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| 129 | ELSE |
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| 130 | ! |
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| 131 | !-- Buoyancy term for a surface with a slope in x-direction. The equations |
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| 132 | !-- for both the u and w velocity-component contain proportionate terms. |
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| 133 | !-- Temperature field at time t=0 serves as environmental temperature. |
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| 134 | !-- Reference temperature (pt_surface) is the one at the lower left corner |
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| 135 | !-- of the total domain. |
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| 136 | IF ( wind_component == 1 ) THEN |
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| 137 | |
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| 138 | DO i = nxl, nxr |
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| 139 | DO j = nys, nyn |
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| 140 | DO k = nzb_s_inner(j,i)+1, nzt-1 |
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| 141 | tend(k,j,i) = tend(k,j,i) + g * sin_alpha_surface * & |
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| 142 | 0.5 * ( ( pt(k,j,i-1) + pt(k,j,i) ) & |
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| 143 | - ( pt_slope_ref(k,i-1) + pt_slope_ref(k,i) ) & |
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| 144 | ) / pt_surface |
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| 145 | ENDDO |
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| 146 | ENDDO |
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| 147 | ENDDO |
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| 148 | |
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| 149 | ELSEIF ( wind_component == 3 ) THEN |
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| 150 | |
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| 151 | DO i = nxl, nxr |
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| 152 | DO j = nys, nyn |
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| 153 | DO k = nzb_s_inner(j,i)+1, nzt-1 |
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| 154 | tend(k,j,i) = tend(k,j,i) + g * cos_alpha_surface * & |
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| 155 | 0.5 * ( ( pt(k,j,i) + pt(k+1,j,i) ) & |
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| 156 | - ( pt_slope_ref(k,i) + pt_slope_ref(k+1,i) ) & |
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| 157 | ) / pt_surface |
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| 158 | ENDDO |
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| 159 | ENDDO |
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| 160 | ENDDO |
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| 161 | |
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| 162 | ELSE |
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| 163 | |
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| 164 | IF ( myid == 0 ) PRINT*, '+++ buoyancy: no term for component "',& |
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| 165 | wind_component,'"' |
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| 166 | CALL local_stop |
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| 167 | |
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| 168 | ENDIF |
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| 169 | |
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| 170 | ENDIF |
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| 171 | |
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| 172 | END SUBROUTINE buoyancy |
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| 173 | |
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| 174 | |
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| 175 | !------------------------------------------------------------------------------! |
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| 176 | ! Call for grid point i,j |
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| 177 | !------------------------------------------------------------------------------! |
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| 178 | SUBROUTINE buoyancy_ij( i, j, theta, wind_component, pr ) |
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| 179 | |
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| 180 | USE arrays_3d |
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| 181 | USE control_parameters |
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| 182 | USE indices |
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| 183 | USE pegrid |
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| 184 | USE statistics |
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| 185 | |
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| 186 | IMPLICIT NONE |
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| 187 | |
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| 188 | INTEGER :: i, j, k, pr, wind_component |
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| 189 | REAL, DIMENSION(:,:,:), POINTER :: theta |
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| 190 | |
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| 191 | |
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| 192 | IF ( .NOT. sloping_surface ) THEN |
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| 193 | ! |
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| 194 | !-- Normal case: horizontal surface |
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| 195 | DO k = nzb_s_inner(j,i)+1, nzt-1 |
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| 196 | tend(k,j,i) = tend(k,j,i) + g * 0.5 * ( & |
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| 197 | ( theta(k,j,i) - hom(k,1,pr,0) ) / hom(k,1,pr,0) + & |
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| 198 | ( theta(k+1,j,i) - hom(k+1,1,pr,0) ) / hom(k+1,1,pr,0) & |
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| 199 | ) |
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| 200 | ENDDO |
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| 201 | |
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| 202 | ELSE |
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| 203 | ! |
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| 204 | !-- Buoyancy term for a surface with a slope in x-direction. The equations |
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| 205 | !-- for both the u and w velocity-component contain proportionate terms. |
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| 206 | !-- Temperature field at time t=0 serves as environmental temperature. |
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| 207 | !-- Reference temperature (pt_surface) is the one at the lower left corner |
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| 208 | !-- of the total domain. |
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| 209 | IF ( wind_component == 1 ) THEN |
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| 210 | |
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| 211 | DO k = nzb_s_inner(j,i)+1, nzt-1 |
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| 212 | tend(k,j,i) = tend(k,j,i) + g * sin_alpha_surface * & |
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| 213 | 0.5 * ( ( pt(k,j,i-1) + pt(k,j,i) ) & |
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| 214 | - ( pt_slope_ref(k,i-1) + pt_slope_ref(k,i) ) & |
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| 215 | ) / pt_surface |
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| 216 | ENDDO |
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| 217 | |
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| 218 | ELSEIF ( wind_component == 3 ) THEN |
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| 219 | |
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| 220 | DO k = nzb_s_inner(j,i)+1, nzt-1 |
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| 221 | tend(k,j,i) = tend(k,j,i) + g * cos_alpha_surface * & |
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| 222 | 0.5 * ( ( pt(k,j,i) + pt(k+1,j,i) ) & |
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| 223 | - ( pt_slope_ref(k,i) + pt_slope_ref(k+1,i) ) & |
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| 224 | ) / pt_surface |
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| 225 | ENDDO |
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| 226 | |
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| 227 | ELSE |
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| 228 | |
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| 229 | IF ( myid == 0 ) PRINT*, '+++ buoyancy: no term for component "',& |
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| 230 | wind_component,'"' |
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| 231 | CALL local_stop |
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| 232 | |
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| 233 | ENDIF |
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| 234 | |
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| 235 | ENDIF |
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| 236 | |
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| 237 | END SUBROUTINE buoyancy_ij |
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| 238 | |
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| 239 | |
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| 240 | SUBROUTINE calc_mean_pt_profile( theta, pr ) |
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| 241 | |
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| 242 | !------------------------------------------------------------------------------! |
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| 243 | ! Description: |
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| 244 | ! ------------ |
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| 245 | ! Calculate the horizontally averaged vertical temperature profile (pr=4 in case |
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| 246 | ! of potential temperature and 44 in case of virtual potential temperature). |
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| 247 | !------------------------------------------------------------------------------! |
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| 248 | |
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| 249 | USE control_parameters |
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| 250 | USE indices |
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| 251 | USE pegrid |
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| 252 | USE statistics |
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| 253 | |
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| 254 | IMPLICIT NONE |
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| 255 | |
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| 256 | INTEGER :: i, j, k, omp_get_thread_num, pr, tn |
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| 257 | REAL, DIMENSION(:,:,:), POINTER :: theta |
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| 258 | |
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| 259 | ! |
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| 260 | !-- Computation of the horizontally averaged temperature profile, unless |
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| 261 | !-- already done by the relevant call from flow_statistics. The calculation |
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| 262 | !-- is done only for the first respective intermediate timestep in order to |
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| 263 | !-- spare communication time and to produce identical model results with jobs |
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| 264 | !-- which are calling flow_statistics at different time intervals. |
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| 265 | !-- Although this calculation is not required for model runs with a slope, |
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| 266 | !-- it is nevertheless also computed. |
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| 267 | IF ( .NOT. flow_statistics_called .AND. & |
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| 268 | intermediate_timestep_count == 1 ) THEN |
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| 269 | |
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| 270 | ! |
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| 271 | !-- Horizontal average of the potential temperature |
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| 272 | tn = 0 ! Default thread number in case of one thread |
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| 273 | !$OMP PARALLEL PRIVATE( i, j, k, tn ) |
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| 274 | !$ tn = omp_get_thread_num() |
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| 275 | sums_l(:,pr,tn) = 0.0 |
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| 276 | !$OMP DO |
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| 277 | DO i = nxl, nxr |
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| 278 | DO j = nys, nyn |
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| 279 | DO k = nzb_s_outer(j,i), nzt+1 |
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| 280 | sums_l(k,pr,tn) = sums_l(k,pr,tn) + theta(k,j,i) |
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| 281 | ENDDO |
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| 282 | ENDDO |
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| 283 | ENDDO |
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| 284 | !$OMP END PARALLEL |
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| 285 | |
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| 286 | DO i = 1, threads_per_task-1 |
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| 287 | sums_l(:,pr,0) = sums_l(:,pr,0) + sums_l(:,pr,i) |
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| 288 | ENDDO |
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| 289 | |
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| 290 | #if defined( __parallel ) |
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| 291 | |
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| 292 | CALL MPI_ALLREDUCE( sums_l(nzb,pr,0), sums(nzb,pr), nzt+2-nzb, & |
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| 293 | MPI_REAL, MPI_SUM, comm2d, ierr ) |
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| 294 | |
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| 295 | #else |
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| 296 | |
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| 297 | sums(:,pr) = sums_l(:,pr,0) |
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| 298 | |
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| 299 | #endif |
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| 300 | |
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| 301 | hom(:,1,pr,0) = sums(:,pr) / ngp_2dh_outer(:,0) |
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| 302 | |
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| 303 | ENDIF |
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| 304 | |
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| 305 | END SUBROUTINE calc_mean_pt_profile |
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| 306 | |
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| 307 | END MODULE buoyancy_mod |
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