/[lmdze]/trunk/libf/dyn3d/grid_change.f90
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Annotation of /trunk/libf/dyn3d/grid_change.f90

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Revision 3 - (hide annotations)
Wed Feb 27 13:16:39 2008 UTC (16 years, 2 months ago) by guez
File size: 2279 byte(s)
Initial import
1 guez 3 module grid_change
2    
3     use dimens_m, only: iim, jjm
4    
5     IMPLICIT NONE
6    
7     logical, save:: dyn_phy(iim + 1, jjm + 1)
8     ! (mask for distinct points in the scalar grid and the "u" grid,
9     ! first index is for longitude, second index is for latitude)
10    
11     private iim, jjm
12    
13     contains
14    
15     subroutine init_dyn_phy
16    
17     ! Construct the mask:
18     dyn_phy = .true.
19     dyn_phy(2:, 1) = .false.
20     dyn_phy(2:, jjm + 1) = .false.
21     dyn_phy(iim + 1, 2:jjm) = .false.
22     ! Note that "count(dyn_phy)" equals "klon"
23    
24     end subroutine init_dyn_phy
25    
26     !********************************************
27    
28     function gr_fi_dyn(pfi)
29    
30     ! From gr_fi_dyn.F, version 1.1.1.1 2004/05/19 12:53:05
31     ! Passage d'un champ de la grille physique à la grille dynamique
32    
33     use dimphy, only: klon
34    
35     REAL, intent(in):: pfi(:)
36     real gr_fi_dyn(iim + 1, jjm + 1)
37    
38     ! Variable local to the procedure:
39     real field(iim + 1, jjm + 1)
40    
41     !-----------------------------------------------------------------------
42    
43     if (size(pfi) /= klon) stop "gr_fi_dyn"
44    
45     ! Traitement des pôles :
46     field(2:, 1) = pfi(1)
47     field(2:, jjm + 1) = pfi(klon)
48     ! (We leave undefined elements in "field")
49    
50     gr_fi_dyn = unpack(pfi, dyn_phy, field)
51     ! Undefined elements at last longitude in "gr_fi_dyn" come from
52     ! undefined elements in "field".
53     ! Overwrite them now, knowing that last longitude equals first longitude:
54     gr_fi_dyn(iim + 1, 2:jjm) = gr_fi_dyn(1, 2:jjm)
55    
56     END function gr_fi_dyn
57    
58     !********************************************
59    
60     function gr_phy_write(pfi)
61    
62     ! From phylmd/physiq.F, version 1.22 2006/02/20 09:38:28
63     ! Transforme une variable de la grille physique à la grille d'écriture.
64     ! The grid for output files does not duplicate the first longitude
65     ! in the last longitude.
66    
67     use dimphy, only: klon
68    
69     REAL, intent(in):: pfi(:)
70     real gr_phy_write(iim, jjm + 1)
71    
72     ! Variable local to the procedure:
73     real field(iim, jjm + 1)
74    
75     !-----------------------------------------------------------------------
76    
77     if (size(pfi) /= klon) stop "gr_phy_write"
78    
79     ! Traitement des pôles :
80     field(2:, 1) = pfi(1)
81     field(2:, jjm + 1) = pfi(klon)
82    
83     gr_phy_write = unpack(pfi, dyn_phy(:iim, :), field)
84    
85     END function gr_phy_write
86    
87     end module grid_change

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