[1850] | 1 | !> @file subsidence_mod.f90 |
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[2000] | 2 | !------------------------------------------------------------------------------! |
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[2696] | 3 | ! This file is part of the PALM model system. |
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[1036] | 4 | ! |
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[2000] | 5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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| 6 | ! terms of the GNU General Public License as published by the Free Software |
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| 7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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| 8 | ! version. |
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[1036] | 9 | ! |
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| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 13 | ! |
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| 14 | ! You should have received a copy of the GNU General Public License along with |
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| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 16 | ! |
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[2718] | 17 | ! Copyright 1997-2018 Leibniz Universitaet Hannover |
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[2000] | 18 | !------------------------------------------------------------------------------! |
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[1036] | 19 | ! |
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[411] | 20 | ! Current revisions: |
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| 21 | ! ----------------- |
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[1683] | 22 | ! |
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[2233] | 23 | ! |
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[1383] | 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: subsidence_mod.f90 3554 2018-11-22 11:24:52Z maronga $ |
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[3554] | 27 | ! add subroutine and variable description |
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| 28 | ! |
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| 29 | ! 3302 2018-10-03 02:39:40Z raasch |
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[3302] | 30 | ! small message change |
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| 31 | ! |
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| 32 | ! 3294 2018-10-01 02:37:10Z raasch |
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[3294] | 33 | ! ocean renamed ocean_mode |
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| 34 | ! |
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| 35 | ! 3045 2018-05-28 07:55:41Z Giersch |
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[3045] | 36 | ! Error message revised |
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| 37 | ! |
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| 38 | ! 2718 2018-01-02 08:49:38Z maronga |
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[2716] | 39 | ! Corrected "Former revisions" section |
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| 40 | ! |
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| 41 | ! 2696 2017-12-14 17:12:51Z kanani |
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| 42 | ! Change in file header (GPL part) |
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[1383] | 43 | ! |
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[2716] | 44 | ! 2233 2017-05-30 18:08:54Z suehring |
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| 45 | ! |
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[2233] | 46 | ! 2232 2017-05-30 17:47:52Z suehring |
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| 47 | ! Adjustments to new topography and surface concept |
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| 48 | ! |
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[2001] | 49 | ! 2000 2016-08-20 18:09:15Z knoop |
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| 50 | ! Forced header and separation lines into 80 columns |
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| 51 | ! |
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[1863] | 52 | ! 1862 2016-04-14 09:07:42Z hoffmann |
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| 53 | ! Bugfix: In case of vector machine optimized model runs, sums_ls_l should not |
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| 54 | ! be addressed if large_scale_forcing is false because sums_ls_l is not |
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| 55 | ! allocated. |
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| 56 | ! |
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[1851] | 57 | ! 1850 2016-04-08 13:29:27Z maronga |
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| 58 | ! Module renamed |
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| 59 | ! |
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[1730] | 60 | ! 1729 2015-11-20 11:01:48Z gronemeier |
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| 61 | ! Bugfix: shifting of initial profiles only once each time step |
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| 62 | ! |
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[1683] | 63 | ! 1682 2015-10-07 23:56:08Z knoop |
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| 64 | ! Code annotations made doxygen readable |
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| 65 | ! |
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[1490] | 66 | ! 1489 2014-10-30 08:09:12Z raasch |
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| 67 | ! bugfix: sums_ls_l can only be used if large_scale_forcing is switched on |
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| 68 | ! |
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[1383] | 69 | ! 1382 2014-04-30 12:15:41Z boeske |
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[1382] | 70 | ! Changed the weighting factor that is used in the summation of subsidence |
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| 71 | ! tendencies for profile data output from weight_pres to weight_substep |
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| 72 | ! added Neumann boundary conditions for profile data output of subsidence terms |
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| 73 | ! at nzt+1 |
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[1321] | 74 | ! |
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[1381] | 75 | ! 1380 2014-04-28 12:40:45Z heinze |
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| 76 | ! Shifting only necessary in case of scalar Rayleigh damping |
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| 77 | ! |
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[1366] | 78 | ! 1365 2014-04-22 15:03:56Z boeske |
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| 79 | ! Summation of subsidence tendencies for data output added |
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| 80 | ! +ls_index, sums_ls_l, tmp_tend |
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| 81 | ! |
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[1354] | 82 | ! 1353 2014-04-08 15:21:23Z heinze |
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| 83 | ! REAL constants provided with KIND-attribute |
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| 84 | ! |
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[1321] | 85 | ! 1320 2014-03-20 08:40:49Z raasch |
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[1320] | 86 | ! ONLY-attribute added to USE-statements, |
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| 87 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 88 | ! kinds are defined in new module kinds, |
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| 89 | ! old module precision_kind is removed, |
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| 90 | ! revision history before 2012 removed, |
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| 91 | ! comment fields (!:) to be used for variable explanations added to |
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| 92 | ! all variable declaration statements |
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[411] | 93 | ! |
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[1037] | 94 | ! 1036 2012-10-22 13:43:42Z raasch |
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| 95 | ! code put under GPL (PALM 3.9) |
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| 96 | ! |
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[464] | 97 | ! Revision 3.7 2009-12-11 14:15:58Z heinze |
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| 98 | ! Initial revision |
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[411] | 99 | ! |
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| 100 | ! Description: |
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| 101 | ! ------------ |
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[1682] | 102 | !> Impact of large-scale subsidence or ascent as tendency term for use |
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| 103 | !> in the prognostic equation of potential temperature. This enables the |
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| 104 | !> construction of a constant boundary layer height z_i with time. |
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[411] | 105 | !-----------------------------------------------------------------------------! |
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[1682] | 106 | MODULE subsidence_mod |
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| 107 | |
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[411] | 108 | |
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| 109 | |
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| 110 | IMPLICIT NONE |
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| 111 | |
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| 112 | PRIVATE |
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| 113 | PUBLIC init_w_subsidence, subsidence |
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| 114 | |
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| 115 | INTERFACE init_w_subsidence |
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| 116 | MODULE PROCEDURE init_w_subsidence |
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| 117 | END INTERFACE init_w_subsidence |
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| 118 | |
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| 119 | INTERFACE subsidence |
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| 120 | MODULE PROCEDURE subsidence |
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| 121 | MODULE PROCEDURE subsidence_ij |
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| 122 | END INTERFACE subsidence |
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| 123 | |
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| 124 | CONTAINS |
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| 125 | |
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[1682] | 126 | !------------------------------------------------------------------------------! |
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| 127 | ! Description: |
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| 128 | ! ------------ |
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[3554] | 129 | !> Initialize vertical subsidence velocity w_subs. |
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[1682] | 130 | !------------------------------------------------------------------------------! |
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[411] | 131 | SUBROUTINE init_w_subsidence |
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| 132 | |
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[1320] | 133 | USE arrays_3d, & |
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| 134 | ONLY: dzu, w_subs, zu |
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[411] | 135 | |
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[1320] | 136 | USE control_parameters, & |
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[3294] | 137 | ONLY: message_string, ocean_mode, subs_vertical_gradient, & |
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[1320] | 138 | subs_vertical_gradient_level, subs_vertical_gradient_level_i |
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| 139 | |
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| 140 | USE indices, & |
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| 141 | ONLY: nzb, nzt |
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| 142 | |
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| 143 | USE kinds |
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| 144 | |
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[411] | 145 | IMPLICIT NONE |
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| 146 | |
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[3554] | 147 | INTEGER(iwp) :: i !< loop index |
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| 148 | INTEGER(iwp) :: k !< loop index |
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[411] | 149 | |
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[3554] | 150 | REAL(wp) :: gradient !< vertical gradient of subsidence velocity |
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| 151 | REAL(wp) :: ws_surface !< subsidence velocity at the surface |
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[1320] | 152 | |
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[1862] | 153 | IF ( .NOT. ALLOCATED( w_subs ) ) THEN |
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[411] | 154 | ALLOCATE( w_subs(nzb:nzt+1) ) |
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[1353] | 155 | w_subs = 0.0_wp |
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[411] | 156 | ENDIF |
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| 157 | |
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[3294] | 158 | IF ( ocean_mode ) THEN |
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[3302] | 159 | message_string = 'applying large scale vertical motion is not ' // & |
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[3294] | 160 | 'allowed for ocean mode' |
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[411] | 161 | CALL message( 'init_w_subsidence', 'PA0324', 2, 2, 0, 6, 0 ) |
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| 162 | ENDIF |
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| 163 | |
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| 164 | ! |
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| 165 | !-- Compute the profile of the subsidence/ascent velocity |
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| 166 | !-- using the given gradients |
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| 167 | i = 1 |
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[1353] | 168 | gradient = 0.0_wp |
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| 169 | ws_surface = 0.0_wp |
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[411] | 170 | |
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| 171 | |
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[580] | 172 | subs_vertical_gradient_level_i(1) = 0 |
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[411] | 173 | DO k = 1, nzt+1 |
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[1365] | 174 | IF ( i < 11 ) THEN |
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[580] | 175 | IF ( subs_vertical_gradient_level(i) < zu(k) .AND. & |
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[1353] | 176 | subs_vertical_gradient_level(i) >= 0.0_wp ) THEN |
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| 177 | gradient = subs_vertical_gradient(i) / 100.0_wp |
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[580] | 178 | subs_vertical_gradient_level_i(i) = k - 1 |
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[411] | 179 | i = i + 1 |
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| 180 | ENDIF |
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| 181 | ENDIF |
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[1353] | 182 | IF ( gradient /= 0.0_wp ) THEN |
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[411] | 183 | IF ( k /= 1 ) THEN |
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| 184 | w_subs(k) = w_subs(k-1) + dzu(k) * gradient |
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| 185 | ELSE |
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[1353] | 186 | w_subs(k) = ws_surface + 0.5_wp * dzu(k) * gradient |
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[411] | 187 | ENDIF |
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| 188 | ELSE |
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| 189 | w_subs(k) = w_subs(k-1) |
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| 190 | ENDIF |
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| 191 | ENDDO |
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| 192 | |
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| 193 | ! |
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| 194 | !-- In case of no given gradients for the subsidence/ascent velocity, |
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| 195 | !-- choose zero gradient |
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[1353] | 196 | IF ( subs_vertical_gradient_level(1) == -9999999.9_wp ) THEN |
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| 197 | subs_vertical_gradient_level(1) = 0.0_wp |
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[411] | 198 | ENDIF |
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| 199 | |
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| 200 | END SUBROUTINE init_w_subsidence |
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| 201 | |
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| 202 | |
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[1682] | 203 | !------------------------------------------------------------------------------! |
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| 204 | ! Description: |
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| 205 | ! ------------ |
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[3554] | 206 | !> Add effect of large-scale subsidence to variable. |
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[1682] | 207 | !------------------------------------------------------------------------------! |
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[1365] | 208 | SUBROUTINE subsidence( tendency, var, var_init, ls_index ) |
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[411] | 209 | |
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[1320] | 210 | USE arrays_3d, & |
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| 211 | ONLY: ddzu, w_subs |
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[411] | 212 | |
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[1320] | 213 | USE control_parameters, & |
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[1380] | 214 | ONLY: dt_3d, intermediate_timestep_count, large_scale_forcing, & |
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| 215 | scalar_rayleigh_damping |
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[1320] | 216 | |
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| 217 | USE indices, & |
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[2232] | 218 | ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt, & |
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| 219 | wall_flags_0 |
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[1320] | 220 | |
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| 221 | USE kinds |
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| 222 | |
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[1365] | 223 | USE statistics, & |
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[1382] | 224 | ONLY: sums_ls_l, weight_substep |
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[1365] | 225 | |
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[411] | 226 | IMPLICIT NONE |
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| 227 | |
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[3554] | 228 | INTEGER(iwp) :: i !< loop index |
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| 229 | INTEGER(iwp) :: j !< loop index |
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| 230 | INTEGER(iwp) :: k !< loop index |
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| 231 | INTEGER(iwp) :: ls_index !< index of large-scale subsidence in sums_ls_l |
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[411] | 232 | |
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[3554] | 233 | REAL(wp) :: tmp_tend !< temporary tendency |
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| 234 | REAL(wp) :: tmp_grad !< temporary gradient |
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[411] | 235 | |
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[3554] | 236 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var !< variable where to add subsidence |
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| 237 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tendency !< tendency of var |
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| 238 | REAL(wp), DIMENSION(nzb:nzt+1) :: var_init !< initialization profile of var |
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| 239 | REAL(wp), DIMENSION(nzb:nzt+1) :: var_mod !< modified profile of var |
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[411] | 240 | |
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[464] | 241 | var_mod = var_init |
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[411] | 242 | |
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| 243 | ! |
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| 244 | !-- Influence of w_subsidence on the current tendency term |
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| 245 | DO i = nxl, nxr |
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| 246 | DO j = nys, nyn |
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[1382] | 247 | |
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[2232] | 248 | DO k = nzb+1, nzt |
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[1365] | 249 | IF ( w_subs(k) < 0.0_wp ) THEN ! large-scale subsidence |
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| 250 | tmp_tend = - w_subs(k) * & |
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[2232] | 251 | ( var(k+1,j,i) - var(k,j,i) ) * ddzu(k+1) * & |
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| 252 | MERGE( 1.0_wp, 0.0_wp, & |
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| 253 | BTEST( wall_flags_0(k,j,i), 0 ) ) |
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[1365] | 254 | ELSE ! large-scale ascent |
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| 255 | tmp_tend = - w_subs(k) * & |
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[2232] | 256 | ( var(k,j,i) - var(k-1,j,i) ) * ddzu(k) * & |
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| 257 | MERGE( 1.0_wp, 0.0_wp, & |
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| 258 | BTEST( wall_flags_0(k,j,i), 0 ) ) |
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[411] | 259 | ENDIF |
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[1365] | 260 | |
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| 261 | tendency(k,j,i) = tendency(k,j,i) + tmp_tend |
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| 262 | |
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| 263 | IF ( large_scale_forcing ) THEN |
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| 264 | sums_ls_l(k,ls_index) = sums_ls_l(k,ls_index) + tmp_tend & |
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[2232] | 265 | * weight_substep(intermediate_timestep_count) & |
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| 266 | * MERGE( 1.0_wp, 0.0_wp, & |
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| 267 | BTEST( wall_flags_0(k,j,i), 0 ) ) |
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[1365] | 268 | ENDIF |
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[411] | 269 | ENDDO |
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[1382] | 270 | |
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[1862] | 271 | IF ( large_scale_forcing ) THEN |
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| 272 | sums_ls_l(nzt+1,ls_index) = sums_ls_l(nzt,ls_index) |
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| 273 | ENDIF |
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[1382] | 274 | |
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[411] | 275 | ENDDO |
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| 276 | ENDDO |
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| 277 | |
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| 278 | ! |
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| 279 | !-- Shifting of the initial profile is especially necessary with Rayleigh |
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| 280 | !-- damping switched on |
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[1729] | 281 | IF ( scalar_rayleigh_damping .AND. & |
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| 282 | intermediate_timestep_count == 1 ) THEN |
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[1380] | 283 | DO k = nzb, nzt |
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| 284 | IF ( w_subs(k) < 0.0_wp ) THEN ! large-scale subsidence |
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| 285 | var_mod(k) = var_init(k) - dt_3d * w_subs(k) * & |
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| 286 | ( var_init(k+1) - var_init(k) ) * ddzu(k+1) |
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| 287 | ENDIF |
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| 288 | ENDDO |
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[411] | 289 | ! |
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[1380] | 290 | !-- At the upper boundary, the initial profile is shifted with aid of |
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| 291 | !-- the gradient tmp_grad. (This is ok if the gradients are linear.) |
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| 292 | IF ( w_subs(nzt) < 0.0_wp ) THEN |
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| 293 | tmp_grad = ( var_init(nzt+1) - var_init(nzt) ) * ddzu(nzt+1) |
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| 294 | var_mod(nzt+1) = var_init(nzt+1) - & |
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| 295 | dt_3d * w_subs(nzt+1) * tmp_grad |
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| 296 | ENDIF |
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[411] | 297 | |
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| 298 | |
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[1380] | 299 | DO k = nzt+1, nzb+1, -1 |
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| 300 | IF ( w_subs(k) >= 0.0_wp ) THEN ! large-scale ascent |
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| 301 | var_mod(k) = var_init(k) - dt_3d * w_subs(k) * & |
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| 302 | ( var_init(k) - var_init(k-1) ) * ddzu(k) |
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| 303 | ENDIF |
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| 304 | ENDDO |
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| 305 | ! |
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| 306 | !-- At the lower boundary shifting is not necessary because the |
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| 307 | !-- subsidence velocity w_subs(nzb) vanishes. |
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| 308 | IF ( w_subs(nzb+1) >= 0.0_wp ) THEN |
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| 309 | var_mod(nzb) = var_init(nzb) |
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[411] | 310 | ENDIF |
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[1380] | 311 | |
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| 312 | var_init = var_mod |
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[411] | 313 | ENDIF |
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| 314 | |
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| 315 | |
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| 316 | END SUBROUTINE subsidence |
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| 317 | |
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[1682] | 318 | !------------------------------------------------------------------------------! |
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| 319 | ! Description: |
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| 320 | ! ------------ |
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[3554] | 321 | !> Add effect of large-scale subsidence to variable. |
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[1682] | 322 | !------------------------------------------------------------------------------! |
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[1365] | 323 | SUBROUTINE subsidence_ij( i, j, tendency, var, var_init, ls_index ) |
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[411] | 324 | |
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[1320] | 325 | USE arrays_3d, & |
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| 326 | ONLY: ddzu, w_subs |
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[411] | 327 | |
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[1320] | 328 | USE control_parameters, & |
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[1380] | 329 | ONLY: dt_3d, intermediate_timestep_count, large_scale_forcing, & |
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| 330 | scalar_rayleigh_damping |
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[1320] | 331 | |
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| 332 | USE indices, & |
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[2232] | 333 | ONLY: nxl, nxlg, nxrg, nyng, nys, nysg, nzb, nzt, wall_flags_0 |
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[1320] | 334 | |
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| 335 | USE kinds |
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| 336 | |
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[1365] | 337 | USE statistics, & |
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[1382] | 338 | ONLY: sums_ls_l, weight_substep |
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[1365] | 339 | |
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[411] | 340 | IMPLICIT NONE |
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| 341 | |
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[3554] | 342 | INTEGER(iwp) :: i !< loop variable |
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| 343 | INTEGER(iwp) :: j !< loop variable |
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| 344 | INTEGER(iwp) :: k !< loop variable |
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| 345 | INTEGER(iwp) :: ls_index !< index of large-scale subsidence in sums_ls_l |
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[411] | 346 | |
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[3554] | 347 | REAL(wp) :: tmp_tend !< temporary tendency |
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| 348 | REAL(wp) :: tmp_grad !< temporary gradient |
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[411] | 349 | |
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[3554] | 350 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var !< variable where to add subsidence |
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| 351 | REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tendency !< tendency of var |
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| 352 | REAL(wp), DIMENSION(nzb:nzt+1) :: var_init !< initialization profile of var |
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| 353 | REAL(wp), DIMENSION(nzb:nzt+1) :: var_mod !< modified profile of var |
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[411] | 354 | |
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[464] | 355 | var_mod = var_init |
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[411] | 356 | |
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| 357 | ! |
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| 358 | !-- Influence of w_subsidence on the current tendency term |
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[2232] | 359 | DO k = nzb+1, nzt |
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[1365] | 360 | IF ( w_subs(k) < 0.0_wp ) THEN ! large-scale subsidence |
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[2232] | 361 | tmp_tend = - w_subs(k) * ( var(k+1,j,i) - var(k,j,i) ) & |
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| 362 | * ddzu(k+1) & |
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| 363 | * MERGE( 1.0_wp, 0.0_wp, & |
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| 364 | BTEST( wall_flags_0(k,j,i), 0 ) ) |
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[1365] | 365 | ELSE ! large-scale ascent |
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[2232] | 366 | tmp_tend = - w_subs(k) * ( var(k,j,i) - var(k-1,j,i) ) * ddzu(k) & |
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| 367 | * MERGE( 1.0_wp, 0.0_wp, & |
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| 368 | BTEST( wall_flags_0(k,j,i), 0 ) ) |
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[411] | 369 | ENDIF |
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[1365] | 370 | |
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| 371 | tendency(k,j,i) = tendency(k,j,i) + tmp_tend |
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| 372 | |
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| 373 | IF ( large_scale_forcing ) THEN |
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| 374 | sums_ls_l(k,ls_index) = sums_ls_l(k,ls_index) + tmp_tend & |
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[2232] | 375 | * weight_substep(intermediate_timestep_count)& |
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| 376 | * MERGE( 1.0_wp, 0.0_wp, & |
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| 377 | BTEST( wall_flags_0(k,j,i), 0 ) ) |
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[1365] | 378 | ENDIF |
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[411] | 379 | ENDDO |
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| 380 | |
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[1489] | 381 | IF ( large_scale_forcing ) THEN |
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| 382 | sums_ls_l(nzt+1,ls_index) = sums_ls_l(nzt,ls_index) |
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| 383 | ENDIF |
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[411] | 384 | |
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| 385 | ! |
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| 386 | !-- Shifting of the initial profile is especially necessary with Rayleigh |
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| 387 | !-- damping switched on |
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[1729] | 388 | IF ( scalar_rayleigh_damping .AND. & |
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| 389 | intermediate_timestep_count == 1 ) THEN |
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[1380] | 390 | IF ( i == nxl .AND. j == nys ) THEN ! shifting only once per PE |
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[411] | 391 | |
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[1380] | 392 | DO k = nzb, nzt |
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| 393 | IF ( w_subs(k) < 0.0_wp ) THEN ! large-scale subsidence |
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| 394 | var_mod(k) = var_init(k) - dt_3d * w_subs(k) * & |
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| 395 | ( var_init(k+1) - var_init(k) ) * ddzu(k+1) |
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| 396 | ENDIF |
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| 397 | ENDDO |
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| 398 | ! |
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| 399 | !-- At the upper boundary, the initial profile is shifted with aid of |
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| 400 | !-- the gradient tmp_grad. (This is ok if the gradients are linear.) |
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| 401 | IF ( w_subs(nzt) < 0.0_wp ) THEN |
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| 402 | tmp_grad = ( var_init(nzt+1) - var_init(nzt) ) * ddzu(nzt+1) |
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| 403 | var_mod(nzt+1) = var_init(nzt+1) - & |
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| 404 | dt_3d * w_subs(nzt+1) * tmp_grad |
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[411] | 405 | ENDIF |
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| 406 | |
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| 407 | |
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[1380] | 408 | DO k = nzt+1, nzb+1, -1 |
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| 409 | IF ( w_subs(k) >= 0.0_wp ) THEN ! large-scale ascent |
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| 410 | var_mod(k) = var_init(k) - dt_3d * w_subs(k) * & |
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| 411 | ( var_init(k) - var_init(k-1) ) * ddzu(k) |
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| 412 | ENDIF |
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| 413 | ENDDO |
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| 414 | ! |
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| 415 | !-- At the lower boundary shifting is not necessary because the |
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| 416 | !-- subsidence velocity w_subs(nzb) vanishes. |
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| 417 | IF ( w_subs(nzb+1) >= 0.0_wp ) THEN |
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| 418 | var_mod(nzb) = var_init(nzb) |
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[411] | 419 | ENDIF |
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| 420 | |
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[1380] | 421 | var_init = var_mod |
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[411] | 422 | |
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[1380] | 423 | ENDIF |
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[411] | 424 | ENDIF |
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| 425 | |
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| 426 | END SUBROUTINE subsidence_ij |
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| 427 | |
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| 428 | |
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| 429 | END MODULE subsidence_mod |
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