source: palm/trunk/SOURCE/compute_vpt.f90 @ 1682

Last change on this file since 1682 was 1682, checked in by knoop, 6 years ago

Code annotations made doxygen readable

  • Property svn:keywords set to Id
File size: 2.8 KB
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1!> @file compute_vpt.f90
2!--------------------------------------------------------------------------------!
3! This file is part of PALM.
4!
5! PALM is free software: you can redistribute it and/or modify it under the terms
6! of the GNU General Public License as published by the Free Software Foundation,
7! either version 3 of the License, or (at your option) any later version.
8!
9! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
10! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11! A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
12!
13! You should have received a copy of the GNU General Public License along with
14! PALM. If not, see <http://www.gnu.org/licenses/>.
15!
16! Copyright 1997-2014 Leibniz Universitaet Hannover
17!--------------------------------------------------------------------------------!
18!
19! Current revisions:
20! -----------------
21! Code annotations made doxygen readable
22!
23! Former revisions:
24! -----------------
25! $Id: compute_vpt.f90 1682 2015-10-07 23:56:08Z knoop $
26!
27! 1353 2014-04-08 15:21:23Z heinze
28! REAL constants provided with KIND-attribute
29!
30! 1320 2014-03-20 08:40:49Z raasch
31! ONLY-attribute added to USE-statements,
32! kind-parameters added to all INTEGER and REAL declaration statements,
33! kinds are defined in new module kinds,
34! revision history before 2012 removed,
35! comment fields (!:) to be used for variable explanations added to
36! all variable declaration statements
37!
38! 1036 2012-10-22 13:43:42Z raasch
39! code put under GPL (PALM 3.9)
40!
41! 803 2012-01-16 15:48:46Z franke
42! Bugfix: wrong factor in calculation of vpt in case of cloud droplets
43!
44! Revision 1.1  2000/04/13 14:40:53  schroeter
45! Initial revision
46!
47!
48! Description:
49! -------------
50!> Computation of the virtual potential temperature
51!------------------------------------------------------------------------------!
52 SUBROUTINE compute_vpt
53 
54
55    USE arrays_3d,                                                             &
56        ONLY:  pt, q, ql, vpt
57       
58    USE indices,                                                               &
59        ONLY:  nzb, nzt
60       
61    USE cloud_parameters,                                                      &
62        ONLY:  l_d_cp, pt_d_t
63       
64    USE control_parameters,                                                    &
65        ONLY:  cloud_droplets, cloud_physics
66       
67    USE kinds
68
69    IMPLICIT NONE
70
71    INTEGER(iwp) :: k   !<
72
73    IF ( .NOT. cloud_physics  .AND.  .NOT. cloud_droplets )  THEN
74       vpt = pt * ( 1.0_wp + 0.61_wp * q )
75    ELSE IF (cloud_physics)  THEN
76       DO  k = nzb, nzt+1
77          vpt(k,:,:) = ( pt(k,:,:) + pt_d_t(k) * l_d_cp * ql(k,:,:) ) *        &
78                       ( 1.0_wp + 0.61_wp * q(k,:,:) - 1.61_wp * ql(k,:,:) ) 
79       ENDDO
80    ELSE
81       vpt = pt * ( 1.0_wp + 0.61_wp * q - ql ) 
82    ENDIF
83
84 END SUBROUTINE compute_vpt
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