| 1 | !> @file compute_vpt.f90 |
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| 2 | !------------------------------------------------------------------------------! |
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| 3 | ! This file is part of the PALM model system. |
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| 4 | ! |
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| 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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| 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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| 17 | ! Copyright 1997-2020 Leibniz Universitaet Hannover |
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| 18 | !------------------------------------------------------------------------------! |
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| 19 | ! |
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| 20 | ! Current revisions: |
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| 21 | ! ----------------- |
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| 22 | ! |
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| 23 | ! |
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| 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: compute_vpt.f90 4360 2020-01-07 11:25:50Z oliver.maas $ |
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| 27 | ! Corrected "Former revisions" section |
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| 28 | ! |
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| 29 | ! 3655 2019-01-07 16:51:22Z knoop |
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| 30 | ! Modularization of all bulk cloud physics code components |
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| 31 | ! |
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| 32 | ! Revision 1.1 2000/04/13 14:40:53 schroeter |
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| 33 | ! Initial revision |
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| 34 | ! |
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| 35 | ! |
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| 36 | ! Description: |
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| 37 | ! ------------- |
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| 38 | !> Computation of the virtual potential temperature |
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| 39 | !------------------------------------------------------------------------------! |
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| 40 | SUBROUTINE compute_vpt |
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| 41 | |
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| 42 | |
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| 43 | USE arrays_3d, & |
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| 44 | ONLY: pt, q, ql, vpt, d_exner |
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| 45 | |
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| 46 | USE basic_constants_and_equations_mod, & |
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| 47 | ONLY: lv_d_cp |
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| 48 | |
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| 49 | USE control_parameters, & |
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| 50 | ONLY: cloud_droplets |
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| 51 | |
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| 52 | USE indices, & |
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| 53 | ONLY: nzb, nzt |
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| 54 | |
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| 55 | USE kinds |
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| 56 | |
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| 57 | USE bulk_cloud_model_mod, & |
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| 58 | ONLY: bulk_cloud_model |
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| 59 | |
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| 60 | IMPLICIT NONE |
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| 61 | |
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| 62 | INTEGER(iwp) :: k !< |
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| 63 | |
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| 64 | IF ( .NOT. bulk_cloud_model .AND. .NOT. cloud_droplets ) THEN |
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| 65 | vpt = pt * ( 1.0_wp + 0.61_wp * q ) |
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| 66 | ELSE IF (bulk_cloud_model) THEN |
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| 67 | DO k = nzb, nzt+1 |
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| 68 | vpt(k,:,:) = ( pt(k,:,:) + d_exner(k) * lv_d_cp * ql(k,:,:) ) * & |
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| 69 | ( 1.0_wp + 0.61_wp * q(k,:,:) - 1.61_wp * ql(k,:,:) ) |
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| 70 | ENDDO |
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| 71 | ELSE |
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| 72 | vpt = pt * ( 1.0_wp + 0.61_wp * q - ql ) |
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| 73 | ENDIF |
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| 74 | |
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| 75 | END SUBROUTINE compute_vpt |
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