source: palm/trunk/SOURCE/compute_vpt.f90 @ 803

Last change on this file since 803 was 803, checked in by franke, 9 years ago

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1 SUBROUTINE compute_vpt
2
3!-------------------------------------------------------------------------------!
4! Current revisions:
5! -----------------
6! Bugfix: wrong factor in calculation of vpt in case of cloud droplets
7!
8! Former revisions:
9! -----------------
10! $Id: compute_vpt.f90 803 2012-01-16 15:48:46Z franke $
11!
12! 799 2011-12-21 17:48:03Z franke
13! Bugfix: ql is now included in calculation of vpt in case of
14!         cloud droplets
15!
16! RCS Log replace by Id keyword, revision history cleaned up
17!
18! Revision 1.5  2001/03/30 06:58:52  raasch
19! Translation of remaining German identifiers (variables, subroutines, etc.)
20!
21! Revision 1.1  2000/04/13 14:40:53  schroeter
22! Initial revision
23!
24!
25! Description:
26! -------------
27! Computation of the virtual potential temperature
28!-------------------------------------------------------------------------------!
29
30    USE arrays_3d
31    USE indices
32    USE cloud_parameters
33    USE control_parameters
34
35    IMPLICIT NONE
36
37    INTEGER :: k
38
39    IF ( .NOT. cloud_physics .AND. .NOT. cloud_droplets ) THEN
40       vpt = pt * ( 1.0 + 0.61 * q )
41    ELSE IF (cloud_physics) THEN
42       DO  k = nzb, nzt+1
43          vpt(k,:,:) = ( pt(k,:,:) + pt_d_t(k) * l_d_cp * ql(k,:,:) ) * &
44                       ( 1.0 + 0.61 * q(k,:,:) - 1.61 * ql(k,:,:) ) 
45       ENDDO
46    ELSE
47       vpt = pt * ( 1.0 + 0.61 * q - ql ) 
48    ENDIF
49
50 END SUBROUTINE compute_vpt
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