1 |
guez |
3 |
module albsno_m |
2 |
|
|
|
3 |
|
|
! From phylmd/interface_surf.F90,v 1.8 2005/05/25 13:10:09 |
4 |
|
|
|
5 |
|
|
IMPLICIT none |
6 |
|
|
|
7 |
|
|
contains |
8 |
|
|
|
9 |
|
|
SUBROUTINE albsno(klon, knon,dtime,agesno,alb_neig_grid, precip_snow) |
10 |
|
|
|
11 |
|
|
INTEGER :: klon, knon |
12 |
|
|
INTEGER, PARAMETER :: nvm = 8 |
13 |
|
|
REAL :: dtime |
14 |
|
|
REAL, dimension(klon,nvm) :: veget |
15 |
|
|
REAL, DIMENSION(klon) :: alb_neig_grid, agesno, precip_snow |
16 |
|
|
|
17 |
|
|
INTEGER :: i, nv |
18 |
|
|
|
19 |
|
|
REAL, DIMENSION(nvm),SAVE :: init, decay |
20 |
|
|
REAL :: as |
21 |
|
|
DATA init /0.55, 0.14, 0.18, 0.29, 0.15, 0.15, 0.14, 0./ |
22 |
|
|
DATA decay/0.30, 0.67, 0.63, 0.45, 0.40, 0.14, 0.06, 1./ |
23 |
|
|
|
24 |
|
|
veget = 0. |
25 |
|
|
veget(:,1) = 1. ! desert partout |
26 |
|
|
DO i = 1, knon |
27 |
|
|
alb_neig_grid(i) = 0.0 |
28 |
|
|
ENDDO |
29 |
|
|
DO nv = 1, nvm |
30 |
|
|
DO i = 1, knon |
31 |
|
|
as = init(nv)+decay(nv)*EXP(-agesno(i)/5.) |
32 |
|
|
alb_neig_grid(i) = alb_neig_grid(i) + veget(i,nv)*as |
33 |
|
|
ENDDO |
34 |
|
|
ENDDO |
35 |
|
|
! |
36 |
|
|
!! modilation en fonction de l'age de la neige |
37 |
|
|
! |
38 |
|
|
DO i = 1, knon |
39 |
|
|
agesno(i) = (agesno(i) + (1.-agesno(i)/50.)*dtime/86400.)& |
40 |
|
|
& * EXP(-1.*MAX(0.0,precip_snow(i))*dtime/0.3) |
41 |
|
|
agesno(i) = MAX(agesno(i),0.0) |
42 |
|
|
ENDDO |
43 |
|
|
|
44 |
|
|
END SUBROUTINE albsno |
45 |
|
|
|
46 |
|
|
end module albsno_m |