[1682] | 1 | !> @file subsidence.f90 |
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[1036] | 2 | !--------------------------------------------------------------------------------! |
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| 3 | ! This file is part of PALM. |
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| 4 | ! |
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| 5 | ! PALM is free software: you can redistribute it and/or modify it under the terms |
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| 6 | ! of the GNU General Public License as published by the Free Software Foundation, |
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| 7 | ! either version 3 of the License, or (at your option) any later version. |
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| 8 | ! |
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| 9 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 10 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 11 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 12 | ! |
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| 13 | ! You should have received a copy of the GNU General Public License along with |
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| 14 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 15 | ! |
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[1818] | 16 | ! Copyright 1997-2016 Leibniz Universitaet Hannover |
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[1036] | 17 | !--------------------------------------------------------------------------------! |
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| 18 | ! |
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[411] | 19 | ! Current revisions: |
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| 20 | ! ----------------- |
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[1683] | 21 | ! |
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[1730] | 22 | ! |
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[1383] | 23 | ! Former revisions: |
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| 24 | ! ----------------- |
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| 25 | ! $Id: subsidence.f90 1818 2016-04-06 15:53:27Z raasch $ |
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| 26 | ! |
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[1730] | 27 | ! 1729 2015-11-20 11:01:48Z gronemeier |
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| 28 | ! Bugfix: shifting of initial profiles only once each time step |
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| 29 | ! |
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[1683] | 30 | ! 1682 2015-10-07 23:56:08Z knoop |
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| 31 | ! Code annotations made doxygen readable |
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| 32 | ! |
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[1490] | 33 | ! 1489 2014-10-30 08:09:12Z raasch |
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| 34 | ! bugfix: sums_ls_l can only be used if large_scale_forcing is switched on |
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| 35 | ! |
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[1383] | 36 | ! 1382 2014-04-30 12:15:41Z boeske |
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[1382] | 37 | ! Changed the weighting factor that is used in the summation of subsidence |
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| 38 | ! tendencies for profile data output from weight_pres to weight_substep |
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| 39 | ! added Neumann boundary conditions for profile data output of subsidence terms |
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| 40 | ! at nzt+1 |
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[1321] | 41 | ! |
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[1381] | 42 | ! 1380 2014-04-28 12:40:45Z heinze |
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| 43 | ! Shifting only necessary in case of scalar Rayleigh damping |
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| 44 | ! |
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[1366] | 45 | ! 1365 2014-04-22 15:03:56Z boeske |
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| 46 | ! Summation of subsidence tendencies for data output added |
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| 47 | ! +ls_index, sums_ls_l, tmp_tend |
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| 48 | ! |
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[1354] | 49 | ! 1353 2014-04-08 15:21:23Z heinze |
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| 50 | ! REAL constants provided with KIND-attribute |
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| 51 | ! |
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[1321] | 52 | ! 1320 2014-03-20 08:40:49Z raasch |
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[1320] | 53 | ! ONLY-attribute added to USE-statements, |
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| 54 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 55 | ! kinds are defined in new module kinds, |
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| 56 | ! old module precision_kind is removed, |
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| 57 | ! revision history before 2012 removed, |
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| 58 | ! comment fields (!:) to be used for variable explanations added to |
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| 59 | ! all variable declaration statements |
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[411] | 60 | ! |
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[1037] | 61 | ! 1036 2012-10-22 13:43:42Z raasch |
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| 62 | ! code put under GPL (PALM 3.9) |
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| 63 | ! |
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[464] | 64 | ! Revision 3.7 2009-12-11 14:15:58Z heinze |
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| 65 | ! Initial revision |
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[411] | 66 | ! |
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| 67 | ! Description: |
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| 68 | ! ------------ |
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[1682] | 69 | !> Impact of large-scale subsidence or ascent as tendency term for use |
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| 70 | !> in the prognostic equation of potential temperature. This enables the |
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| 71 | !> construction of a constant boundary layer height z_i with time. |
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[411] | 72 | !-----------------------------------------------------------------------------! |
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[1682] | 73 | MODULE subsidence_mod |
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| 74 | |
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[411] | 75 | |
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| 76 | |
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| 77 | IMPLICIT NONE |
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| 78 | |
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| 79 | PRIVATE |
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| 80 | PUBLIC init_w_subsidence, subsidence |
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| 81 | |
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| 82 | INTERFACE init_w_subsidence |
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| 83 | MODULE PROCEDURE init_w_subsidence |
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| 84 | END INTERFACE init_w_subsidence |
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| 85 | |
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| 86 | INTERFACE subsidence |
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| 87 | MODULE PROCEDURE subsidence |
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| 88 | MODULE PROCEDURE subsidence_ij |
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| 89 | END INTERFACE subsidence |
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| 90 | |
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| 91 | CONTAINS |
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| 92 | |
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[1682] | 93 | !------------------------------------------------------------------------------! |
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| 94 | ! Description: |
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| 95 | ! ------------ |
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| 96 | !> @todo Missing subroutine description. |
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| 97 | !------------------------------------------------------------------------------! |
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[411] | 98 | SUBROUTINE init_w_subsidence |
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| 99 | |
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[1320] | 100 | USE arrays_3d, & |
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| 101 | ONLY: dzu, w_subs, zu |
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[411] | 102 | |
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[1320] | 103 | USE control_parameters, & |
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| 104 | ONLY: message_string, ocean, subs_vertical_gradient, & |
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| 105 | subs_vertical_gradient_level, subs_vertical_gradient_level_i |
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| 106 | |
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| 107 | USE indices, & |
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| 108 | ONLY: nzb, nzt |
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| 109 | |
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| 110 | USE kinds |
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| 111 | |
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[411] | 112 | IMPLICIT NONE |
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| 113 | |
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[1682] | 114 | INTEGER(iwp) :: i !< |
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| 115 | INTEGER(iwp) :: k !< |
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[411] | 116 | |
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[1682] | 117 | REAL(wp) :: gradient !< |
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| 118 | REAL(wp) :: ws_surface !< |
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[1320] | 119 | |
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[1365] | 120 | IF ( .NOT. ALLOCATED( w_subs )) THEN |
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[411] | 121 | ALLOCATE( w_subs(nzb:nzt+1) ) |
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[1353] | 122 | w_subs = 0.0_wp |
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[411] | 123 | ENDIF |
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| 124 | |
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[1365] | 125 | IF ( ocean ) THEN |
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[411] | 126 | message_string = 'Applying large scale vertical motion is not ' // & |
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| 127 | 'allowed for ocean runs' |
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| 128 | CALL message( 'init_w_subsidence', 'PA0324', 2, 2, 0, 6, 0 ) |
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| 129 | ENDIF |
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| 130 | |
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| 131 | ! |
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| 132 | !-- Compute the profile of the subsidence/ascent velocity |
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| 133 | !-- using the given gradients |
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| 134 | i = 1 |
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[1353] | 135 | gradient = 0.0_wp |
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| 136 | ws_surface = 0.0_wp |
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[411] | 137 | |
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| 138 | |
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[580] | 139 | subs_vertical_gradient_level_i(1) = 0 |
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[411] | 140 | DO k = 1, nzt+1 |
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[1365] | 141 | IF ( i < 11 ) THEN |
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[580] | 142 | IF ( subs_vertical_gradient_level(i) < zu(k) .AND. & |
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[1353] | 143 | subs_vertical_gradient_level(i) >= 0.0_wp ) THEN |
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| 144 | gradient = subs_vertical_gradient(i) / 100.0_wp |
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[580] | 145 | subs_vertical_gradient_level_i(i) = k - 1 |
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[411] | 146 | i = i + 1 |
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| 147 | ENDIF |
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| 148 | ENDIF |
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[1353] | 149 | IF ( gradient /= 0.0_wp ) THEN |
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[411] | 150 | IF ( k /= 1 ) THEN |
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| 151 | w_subs(k) = w_subs(k-1) + dzu(k) * gradient |
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| 152 | ELSE |
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[1353] | 153 | w_subs(k) = ws_surface + 0.5_wp * dzu(k) * gradient |
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[411] | 154 | ENDIF |
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| 155 | ELSE |
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| 156 | w_subs(k) = w_subs(k-1) |
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| 157 | ENDIF |
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| 158 | ENDDO |
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| 159 | |
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| 160 | ! |
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| 161 | !-- In case of no given gradients for the subsidence/ascent velocity, |
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| 162 | !-- choose zero gradient |
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[1353] | 163 | IF ( subs_vertical_gradient_level(1) == -9999999.9_wp ) THEN |
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| 164 | subs_vertical_gradient_level(1) = 0.0_wp |
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[411] | 165 | ENDIF |
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| 166 | |
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| 167 | END SUBROUTINE init_w_subsidence |
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| 168 | |
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| 169 | |
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[1682] | 170 | !------------------------------------------------------------------------------! |
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| 171 | ! Description: |
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| 172 | ! ------------ |
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| 173 | !> @todo Missing subroutine description. |
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| 174 | !------------------------------------------------------------------------------! |
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[1365] | 175 | SUBROUTINE subsidence( tendency, var, var_init, ls_index ) |
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[411] | 176 | |
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[1320] | 177 | USE arrays_3d, & |
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| 178 | ONLY: ddzu, w_subs |
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[411] | 179 | |
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[1320] | 180 | USE control_parameters, & |
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[1380] | 181 | ONLY: dt_3d, intermediate_timestep_count, large_scale_forcing, & |
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| 182 | scalar_rayleigh_damping |
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[1320] | 183 | |
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| 184 | USE indices, & |
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| 185 | ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzb_s_inner,& |
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| 186 | nzt |
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| 187 | |
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| 188 | USE kinds |
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| 189 | |
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[1365] | 190 | USE statistics, & |
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[1382] | 191 | ONLY: sums_ls_l, weight_substep |
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[1365] | 192 | |
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[411] | 193 | IMPLICIT NONE |
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| 194 | |
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[1682] | 195 | INTEGER(iwp) :: i !< |
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| 196 | INTEGER(iwp) :: j !< |
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| 197 | INTEGER(iwp) :: k !< |
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| 198 | INTEGER(iwp) :: ls_index !< |
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[411] | 199 | |
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[1682] | 200 | REAL(wp) :: tmp_tend !< |
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| 201 | REAL(wp) :: tmp_grad !< |
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[411] | 202 | |
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[1682] | 203 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var !< |
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| 204 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tendency !< |
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| 205 | REAL(wp), DIMENSION(nzb:nzt+1) :: var_init !< |
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| 206 | REAL(wp), DIMENSION(nzb:nzt+1) :: var_mod !< |
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[411] | 207 | |
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[464] | 208 | var_mod = var_init |
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[411] | 209 | |
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| 210 | ! |
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| 211 | !-- Influence of w_subsidence on the current tendency term |
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| 212 | DO i = nxl, nxr |
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| 213 | DO j = nys, nyn |
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[1382] | 214 | |
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[411] | 215 | DO k = nzb_s_inner(j,i)+1, nzt |
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[1365] | 216 | IF ( w_subs(k) < 0.0_wp ) THEN ! large-scale subsidence |
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| 217 | tmp_tend = - w_subs(k) * & |
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| 218 | ( var(k+1,j,i) - var(k,j,i) ) * ddzu(k+1) |
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| 219 | ELSE ! large-scale ascent |
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| 220 | tmp_tend = - w_subs(k) * & |
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| 221 | ( var(k,j,i) - var(k-1,j,i) ) * ddzu(k) |
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[411] | 222 | ENDIF |
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[1365] | 223 | |
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| 224 | tendency(k,j,i) = tendency(k,j,i) + tmp_tend |
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| 225 | |
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| 226 | IF ( large_scale_forcing ) THEN |
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| 227 | sums_ls_l(k,ls_index) = sums_ls_l(k,ls_index) + tmp_tend & |
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[1382] | 228 | * weight_substep(intermediate_timestep_count) |
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[1365] | 229 | ENDIF |
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[411] | 230 | ENDDO |
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[1382] | 231 | |
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| 232 | sums_ls_l(nzt+1,ls_index) = sums_ls_l(nzt,ls_index) |
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| 233 | |
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[411] | 234 | ENDDO |
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| 235 | ENDDO |
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| 236 | |
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| 237 | ! |
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| 238 | !-- Shifting of the initial profile is especially necessary with Rayleigh |
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| 239 | !-- damping switched on |
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[1729] | 240 | IF ( scalar_rayleigh_damping .AND. & |
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| 241 | intermediate_timestep_count == 1 ) THEN |
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[1380] | 242 | DO k = nzb, nzt |
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| 243 | IF ( w_subs(k) < 0.0_wp ) THEN ! large-scale subsidence |
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| 244 | var_mod(k) = var_init(k) - dt_3d * w_subs(k) * & |
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| 245 | ( var_init(k+1) - var_init(k) ) * ddzu(k+1) |
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| 246 | ENDIF |
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| 247 | ENDDO |
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[411] | 248 | ! |
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[1380] | 249 | !-- At the upper boundary, the initial profile is shifted with aid of |
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| 250 | !-- the gradient tmp_grad. (This is ok if the gradients are linear.) |
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| 251 | IF ( w_subs(nzt) < 0.0_wp ) THEN |
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| 252 | tmp_grad = ( var_init(nzt+1) - var_init(nzt) ) * ddzu(nzt+1) |
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| 253 | var_mod(nzt+1) = var_init(nzt+1) - & |
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| 254 | dt_3d * w_subs(nzt+1) * tmp_grad |
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| 255 | ENDIF |
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[411] | 256 | |
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| 257 | |
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[1380] | 258 | DO k = nzt+1, nzb+1, -1 |
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| 259 | IF ( w_subs(k) >= 0.0_wp ) THEN ! large-scale ascent |
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| 260 | var_mod(k) = var_init(k) - dt_3d * w_subs(k) * & |
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| 261 | ( var_init(k) - var_init(k-1) ) * ddzu(k) |
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| 262 | ENDIF |
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| 263 | ENDDO |
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| 264 | ! |
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| 265 | !-- At the lower boundary shifting is not necessary because the |
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| 266 | !-- subsidence velocity w_subs(nzb) vanishes. |
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| 267 | IF ( w_subs(nzb+1) >= 0.0_wp ) THEN |
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| 268 | var_mod(nzb) = var_init(nzb) |
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[411] | 269 | ENDIF |
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[1380] | 270 | |
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| 271 | var_init = var_mod |
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[411] | 272 | ENDIF |
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| 273 | |
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| 274 | |
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| 275 | END SUBROUTINE subsidence |
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| 276 | |
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[1682] | 277 | !------------------------------------------------------------------------------! |
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| 278 | ! Description: |
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| 279 | ! ------------ |
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| 280 | !> @todo Missing subroutine description. |
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| 281 | !------------------------------------------------------------------------------! |
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[1365] | 282 | SUBROUTINE subsidence_ij( i, j, tendency, var, var_init, ls_index ) |
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[411] | 283 | |
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[1320] | 284 | USE arrays_3d, & |
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| 285 | ONLY: ddzu, w_subs |
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[411] | 286 | |
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[1320] | 287 | USE control_parameters, & |
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[1380] | 288 | ONLY: dt_3d, intermediate_timestep_count, large_scale_forcing, & |
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| 289 | scalar_rayleigh_damping |
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[1320] | 290 | |
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| 291 | USE indices, & |
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| 292 | ONLY: nxl, nxlg, nxrg, nyng, nys, nysg, nzb_s_inner, nzb, nzt |
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| 293 | |
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| 294 | USE kinds |
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| 295 | |
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[1365] | 296 | USE statistics, & |
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[1382] | 297 | ONLY: sums_ls_l, weight_substep |
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[1365] | 298 | |
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[411] | 299 | IMPLICIT NONE |
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| 300 | |
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[1682] | 301 | INTEGER(iwp) :: i !< |
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| 302 | INTEGER(iwp) :: j !< |
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| 303 | INTEGER(iwp) :: k !< |
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| 304 | INTEGER(iwp) :: ls_index !< |
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[411] | 305 | |
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[1682] | 306 | REAL(wp) :: tmp_tend !< |
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| 307 | REAL(wp) :: tmp_grad !< |
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[411] | 308 | |
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[1682] | 309 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var !< |
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| 310 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tendency !< |
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| 311 | REAL(wp), DIMENSION(nzb:nzt+1) :: var_init !< |
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| 312 | REAL(wp), DIMENSION(nzb:nzt+1) :: var_mod !< |
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[411] | 313 | |
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[464] | 314 | var_mod = var_init |
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[411] | 315 | |
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| 316 | ! |
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| 317 | !-- Influence of w_subsidence on the current tendency term |
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| 318 | DO k = nzb_s_inner(j,i)+1, nzt |
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[1365] | 319 | IF ( w_subs(k) < 0.0_wp ) THEN ! large-scale subsidence |
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| 320 | tmp_tend = - w_subs(k) * ( var(k+1,j,i) - var(k,j,i) ) * ddzu(k+1) |
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| 321 | ELSE ! large-scale ascent |
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| 322 | tmp_tend = - w_subs(k) * ( var(k,j,i) - var(k-1,j,i) ) * ddzu(k) |
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[411] | 323 | ENDIF |
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[1365] | 324 | |
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| 325 | tendency(k,j,i) = tendency(k,j,i) + tmp_tend |
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| 326 | |
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| 327 | IF ( large_scale_forcing ) THEN |
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| 328 | sums_ls_l(k,ls_index) = sums_ls_l(k,ls_index) + tmp_tend & |
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[1382] | 329 | * weight_substep(intermediate_timestep_count) |
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[1365] | 330 | ENDIF |
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[411] | 331 | ENDDO |
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| 332 | |
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[1489] | 333 | IF ( large_scale_forcing ) THEN |
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| 334 | sums_ls_l(nzt+1,ls_index) = sums_ls_l(nzt,ls_index) |
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| 335 | ENDIF |
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[411] | 336 | |
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| 337 | ! |
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| 338 | !-- Shifting of the initial profile is especially necessary with Rayleigh |
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| 339 | !-- damping switched on |
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[1729] | 340 | IF ( scalar_rayleigh_damping .AND. & |
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| 341 | intermediate_timestep_count == 1 ) THEN |
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[1380] | 342 | IF ( i == nxl .AND. j == nys ) THEN ! shifting only once per PE |
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[411] | 343 | |
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[1380] | 344 | DO k = nzb, nzt |
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| 345 | IF ( w_subs(k) < 0.0_wp ) THEN ! large-scale subsidence |
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| 346 | var_mod(k) = var_init(k) - dt_3d * w_subs(k) * & |
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| 347 | ( var_init(k+1) - var_init(k) ) * ddzu(k+1) |
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| 348 | ENDIF |
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| 349 | ENDDO |
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| 350 | ! |
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| 351 | !-- At the upper boundary, the initial profile is shifted with aid of |
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| 352 | !-- the gradient tmp_grad. (This is ok if the gradients are linear.) |
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| 353 | IF ( w_subs(nzt) < 0.0_wp ) THEN |
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| 354 | tmp_grad = ( var_init(nzt+1) - var_init(nzt) ) * ddzu(nzt+1) |
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| 355 | var_mod(nzt+1) = var_init(nzt+1) - & |
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| 356 | dt_3d * w_subs(nzt+1) * tmp_grad |
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[411] | 357 | ENDIF |
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| 358 | |
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| 359 | |
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[1380] | 360 | DO k = nzt+1, nzb+1, -1 |
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| 361 | IF ( w_subs(k) >= 0.0_wp ) THEN ! large-scale ascent |
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| 362 | var_mod(k) = var_init(k) - dt_3d * w_subs(k) * & |
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| 363 | ( var_init(k) - var_init(k-1) ) * ddzu(k) |
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| 364 | ENDIF |
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| 365 | ENDDO |
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| 366 | ! |
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| 367 | !-- At the lower boundary shifting is not necessary because the |
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| 368 | !-- subsidence velocity w_subs(nzb) vanishes. |
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| 369 | IF ( w_subs(nzb+1) >= 0.0_wp ) THEN |
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| 370 | var_mod(nzb) = var_init(nzb) |
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[411] | 371 | ENDIF |
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| 372 | |
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[1380] | 373 | var_init = var_mod |
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[411] | 374 | |
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[1380] | 375 | ENDIF |
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[411] | 376 | ENDIF |
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| 377 | |
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| 378 | END SUBROUTINE subsidence_ij |
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| 379 | |
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| 380 | |
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| 381 | END MODULE subsidence_mod |
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