source: LMDZ6/branches/Amaury_dev/libf/dyn3d_common/massbar.F90 @ 5115

Last change on this file since 5115 was 5099, checked in by abarral, 4 months ago

Replace most uses of CPP_DUST by the corresponding logical defined in lmdz_cppkeys_wrapper.F90
Convert several files from .F to .f90 to allow Dust to compile w/o rrtm/ecrad
Create lmdz_yoerad.f90
(lint) Remove "!" on otherwise empty line
  • Property copyright set to
    Name of program: LMDZ
    Creation date: 1984
    Version: LMDZ5
    License: CeCILL version 2
    Holder: Laboratoire de m\'et\'eorologie dynamique, CNRS, UMR 8539
    See the license file in the root directory
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.4 KB
Line 
1SUBROUTINE massbar(masse,massebx,masseby)
2
3!-------------------------------------------------------------------------------
4! Authors: P. Le Van , Fr. Hourdin.
5!-------------------------------------------------------------------------------
6! Purpose: Compute air mass mean along X and Y in each cell.
7! See iniconst for more details.
8  IMPLICIT NONE
9  include "dimensions.h"
10  include "paramet.h"
11  include "comgeom.h"
12!===============================================================================
13! Arguments:
14  REAL, INTENT(IN)  :: masse  (ip1jmp1,llm)
15  REAL, INTENT(OUT) :: massebx(ip1jmp1,llm)
16  REAL, INTENT(OUT) :: masseby(ip1jm  ,llm)
17!-------------------------------------------------------------------------------
18! Method used. Each scalar point is associated to 4 area coefficients:
19!    * alpha1(i,j) at point ( i+1/4,j-1/4 )
20!    * alpha2(i,j) at point ( i+1/4,j+1/4 )
21!    * alpha3(i,j) at point ( i-1/4,j+1/4 )
22!    * alpha4(i,j) at point ( i-1/4,j-1/4 )
23! where alpha1(i,j) = aire(i+1/4,j-1/4)/ aire(i,j)
24
25!   alpha4 .         . alpha1    . alpha4
26!    (i,j)             (i,j)       (i+1,j)
27
28!             P .        U .          . P
29!           (i,j)       (i,j)         (i+1,j)
30
31!   alpha3 .         . alpha2    .alpha3
32!    (i,j)              (i,j)     (i+1,j)
33
34!             V .        Z .          . V
35!           (i,j)
36
37!   alpha4 .         . alpha1    .alpha4
38!   (i,j+1)            (i,j+1)   (i+1,j+1)
39
40!             P .        U .          . P
41!          (i,j+1)                    (i+1,j+1)
42
43
44!    massebx(i,j) = masse(i  ,j) * ( alpha1(i  ,j) + alpha2(i,j))   +
45!                   masse(i+1,j) * ( alpha3(i+1,j) + alpha4(i+1,j) )
46!     localized at point  ... U (i,j) ...
47
48!    masseby(i,j) = masse(i,j  ) * ( alpha2(i,j  ) + alpha3(i,j  )  +
49!                   masse(i,j+1) * ( alpha1(i,j+1) + alpha4(i,j+1) 
50!     localized at point  ... V (i,j) ...
51!===============================================================================
52! Local variables:
53  INTEGER :: ij, l
54!===============================================================================
55  DO l=1,llm
56    DO ij=1,ip1jmp1-1
57      massebx(ij,l)=masse(ij,l)*alpha1p2(ij)+masse(ij+1   ,l)*alpha3p4(ij+1)
58    END DO
59    DO ij=iip1,ip1jmp1,iip1; massebx(ij,l)=massebx(ij-iim,l); END DO
60    DO ij=1,ip1jm
61      masseby(ij,l)=masse(ij,l)*alpha2p3(ij)+masse(ij+iip1,l)*alpha1p4(ij+iip1)
62    END DO
63  END DO
64
65END SUBROUTINE massbar
66
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