| 1 |
module conf_dat3d_m |
| 2 |
|
| 3 |
IMPLICIT NONE |
| 4 |
|
| 5 |
contains |
| 6 |
|
| 7 |
SUBROUTINE conf_dat3d(xd, yd, zd, xf, yf, zf, champd) |
| 8 |
|
| 9 |
! From dyn3d/conf_dat3d.F, version 1.1.1.1 2004/05/19 12:53:05 |
| 10 |
|
| 11 |
! Author : P. Le Van |
| 12 |
|
| 13 |
! Ce sous-programme configure le champ de données 3D 'champd' pour |
| 14 |
! que la longitude varie de - pi à pi, la latitude de pi/2 à |
| 15 |
! - pi/2 et pour que la coordonnée pression soit décroissante. |
| 16 |
|
| 17 |
use nr_util, only: assert_eq, pi |
| 18 |
|
| 19 |
REAL, intent(in):: xd(:), yd(:) ! longitudes et latitudes initiales, en rad |
| 20 |
REAL, intent(in):: zd(:) ! pressure levels, in Pa or hPa |
| 21 |
|
| 22 |
REAL, intent(out):: xf(:) ! longitude, in rad, - pi to pi |
| 23 |
REAL, intent(out):: yf(:) ! latitude, in rad, pi/2 to -pi/2 |
| 24 |
REAL, intent(out):: zf(:) ! pressure levels, in decreasing order, in Pa |
| 25 |
REAL, intent(inout):: champd(:, :, :) |
| 26 |
|
| 27 |
! Variables locales : |
| 28 |
|
| 29 |
INTEGER lons, lats, levs |
| 30 |
LOGICAL invlon |
| 31 |
REAL rlatmin, rlatmax, oldxd1 |
| 32 |
INTEGER i |
| 33 |
|
| 34 |
!-------------------------------------- |
| 35 |
|
| 36 |
lons = assert_eq(size(xd), size(xf), size(champd, 1), "conf_dat3d lons") |
| 37 |
lats = assert_eq(size(yd), size(yf), size(champd, 2), "conf_dat3d lats") |
| 38 |
levs = assert_eq(size(zd), size(zf), size(champd, 3), "conf_dat3d levs") |
| 39 |
|
| 40 |
IF (xd(1) >= - pi - 0.5 .AND. xd(lons) <= pi + 0.5) THEN |
| 41 |
invlon = .FALSE. |
| 42 |
ELSE IF (xd(1) >= -0.5 .AND. xd(lons) <= 2 * pi+0.5) THEN |
| 43 |
invlon = .TRUE. |
| 44 |
ELSE |
| 45 |
print *, 'Problème sur les longitudes des données' |
| 46 |
stop 1 |
| 47 |
ENDIF |
| 48 |
|
| 49 |
rlatmin = MIN(yd(1), yd(lats)) |
| 50 |
rlatmax = MAX(yd(1), yd(lats)) |
| 51 |
|
| 52 |
IF (rlatmin < -pi / 2 - 0.5 .or. rlatmax > pi / 2 + 0.5) THEN |
| 53 |
print *, ' Problème sur les latitudes des données' |
| 54 |
stop 1 |
| 55 |
ENDIF |
| 56 |
|
| 57 |
xf(:) = xd(:) |
| 58 |
yf(:) = yd(:) |
| 59 |
|
| 60 |
IF (invlon) THEN |
| 61 |
! On tourne les longitudes pour avoir - pi à pi |
| 62 |
DO i=1, lons |
| 63 |
IF (xf(i) > pi) exit |
| 64 |
ENDDO |
| 65 |
|
| 66 |
where (xf > pi) xf = xf - 2 * pi |
| 67 |
xf = cshift(xf, i - 1) |
| 68 |
! On tourne les longitudes pour "champd": |
| 69 |
champd = cshift(champd, i - 1) |
| 70 |
ENDIF |
| 71 |
|
| 72 |
IF (yd(1) < yd(lats)) THEN |
| 73 |
yf = yf(lats:1:-1) |
| 74 |
champd = champd(:, lats:1:-1, :) |
| 75 |
ENDIF |
| 76 |
|
| 77 |
oldxd1 = xf(1) |
| 78 |
forall (i = 1: lons-1) xf(i) = 0.5 * (xf(i) + xf(i+1)) |
| 79 |
xf(lons) = 0.5 * (xf(lons) + oldxd1 + 2 * pi) |
| 80 |
forall (i = 1: lats-1) yf(i) = 0.5 * (yf(i) + yf(i+1)) |
| 81 |
|
| 82 |
IF (MAX(zd(1), zd(levs)) < 1200.) THEN |
| 83 |
zf(:) = zd(:) * 100. ! convert from hPa to Pa |
| 84 |
else |
| 85 |
zf(:) = zd(:) |
| 86 |
ENDIF |
| 87 |
|
| 88 |
IF (zd(1) < zd(levs)) THEN |
| 89 |
zf(:) = zf(levs:1:-1) |
| 90 |
champd(:, :, :) = champd(:, :, levs:1:-1) |
| 91 |
ENDIF |
| 92 |
|
| 93 |
END SUBROUTINE conf_dat3d |
| 94 |
|
| 95 |
end module conf_dat3d_m |
Parent Directory
| 
Revision Log