source: LMDZ4/trunk/libf/phylmd/geo2atm.F90 @ 5434

Last change on this file since 5434 was 1385, checked in by Laurent Fairhead, 15 years ago

Correction of bug in wind component transformation at the poles


Correction d'un bug dans la transformation du vent aux pôles

OM

File size: 1.4 KB
Line 
1!
2! $Header: /home/cvsroot/LMDZ4/libf/phylmd/geo2atm.F90,v 1.1 2008-12-05 17:56:40 lsce Exp $
3!
4SUBROUTINE geo2atm(im, jm, px, py, pz, plon, plat, pu, pv, pr)
5  USE dimphy
6  USE mod_phys_lmdz_para
7
8  IMPLICIT NONE
9  INCLUDE 'dimensions.h'
10  INCLUDE 'YOMCST.h'
11
12! Change wind coordinates from cartesian geocentric to local spherical
13! NB! Fonctionne probablement uniquement en MPI seul (sans OpenMP)
14!
15  INTEGER, INTENT (IN)                 :: im, jm
16  REAL, DIMENSION (im,jm), INTENT(IN)  :: px, py, pz
17  REAL, DIMENSION (im,jm), INTENT(IN)  :: plon, plat
18  REAL, DIMENSION (im,jm), INTENT(OUT) :: pu, pv, pr
19
20  REAL :: rad
21
22
23  rad = rpi / 180.0E0
24 
25  pu(:,:) = &
26       - px(:,:) * SIN(rad * plon(:,:)) &
27       + py(:,:) * COS(rad * plon(:,:))
28
29  pv(:,:) = &
30       - px(:,:) * SIN(rad * plat(:,:)) * COS(rad * plon(:,:)) &
31       - py(:,:) * SIN(rad * plat(:,:)) * SIN(rad * plon(:,:)) &
32       + pz(:,:) * COS(rad * plat(:,:)) 
33
34  pr(:,:) = &
35       + px(:,:) * COS(rad * plat(:,:)) * COS(rad * plon(:,:)) &
36       + py(:,:) * COS(rad * plat(:,:)) * SIN(rad * plon(:,:)) &
37       + pz(:,:) * SIN(rad * plat(:,:))
38
39  ! Value at North Pole
40  IF (is_north_pole) THEN
41     pu(:, 1) = -px (1,1)
42     pv(:, 1) = -py (1,1)
43     pr(:, 1) = 0.0
44  ENDIF
45 
46  ! Value at South Pole     
47  IF (is_south_pole) THEN
48     pu(:,jm) = -px (1,jm)
49     pv(:,jm) = -py (1,jm)
50     pr(:,jm) = 0.0
51  ENDIF
52 
53END SUBROUTINE geo2atm
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