source: palm/trunk/SOURCE/compute_vpt.f90 @ 880

 SUBROUTINE compute_vpt

!-------------------------------------------------------------------------------!
! Current revisions:
! -----------------
! 
!
! Former revisions:
! -----------------
! $Id: compute_vpt.f90 804 2012-01-16 16:12:22Z raasch $
!
! 803 2012-01-16 15:48:46Z franke
! Bugfix: wrong factor in calculation of vpt in case of cloud droplets
!
! 799 2011-12-21 17:48:03Z franke
! Bugfix: ql is now included in calculation of vpt in case of 
!         cloud droplets 
!
! RCS Log replace by Id keyword, revision history cleaned up
!
! Revision 1.5  2001/03/30 06:58:52  raasch
! Translation of remaining German identifiers (variables, subroutines, etc.)
!
! Revision 1.1  2000/04/13 14:40:53  schroeter
! Initial revision
!
!
! Description:
! -------------
! Computation of the virtual potential temperature 
!-------------------------------------------------------------------------------!

    USE arrays_3d
    USE indices
    USE cloud_parameters
    USE control_parameters

    IMPLICIT NONE

    INTEGER :: k

    IF ( .NOT. cloud_physics .AND. .NOT. cloud_droplets ) THEN
       vpt = pt * ( 1.0 + 0.61 * q )
    ELSE IF (cloud_physics) THEN
       DO  k = nzb, nzt+1
          vpt(k,:,:) = ( pt(k,:,:) + pt_d_t(k) * l_d_cp * ql(k,:,:) ) * &
                       ( 1.0 + 0.61 * q(k,:,:) - 1.61 * ql(k,:,:) ) 
       ENDDO
    ELSE
       vpt = pt * ( 1.0 + 0.61 * q - ql ) 
    ENDIF

 END SUBROUTINE compute_vpt