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module albsno_m |
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! From phylmd/interface_surf.F90,v 1.8 2005/05/25 13:10:09 |
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IMPLICIT none |
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contains |
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SUBROUTINE albsno(klon, knon,dtime,agesno,alb_neig_grid, precip_snow) |
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INTEGER :: klon, knon |
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INTEGER, PARAMETER :: nvm = 8 |
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REAL :: dtime |
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REAL, dimension(klon,nvm) :: veget |
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REAL, DIMENSION(klon) :: alb_neig_grid, agesno, precip_snow |
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INTEGER :: i, nv |
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REAL, DIMENSION(nvm),SAVE :: init, decay |
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REAL :: as |
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DATA init /0.55, 0.14, 0.18, 0.29, 0.15, 0.15, 0.14, 0./ |
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DATA decay/0.30, 0.67, 0.63, 0.45, 0.40, 0.14, 0.06, 1./ |
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veget = 0. |
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veget(:,1) = 1. ! desert partout |
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DO i = 1, knon |
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alb_neig_grid(i) = 0.0 |
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ENDDO |
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DO nv = 1, nvm |
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DO i = 1, knon |
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as = init(nv)+decay(nv)*EXP(-agesno(i)/5.) |
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alb_neig_grid(i) = alb_neig_grid(i) + veget(i,nv)*as |
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ENDDO |
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ENDDO |
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! |
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!! modilation en fonction de l'age de la neige |
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! |
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DO i = 1, knon |
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agesno(i) = (agesno(i) + (1.-agesno(i)/50.)*dtime/86400.)& |
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& * EXP(-1.*MAX(0.0,precip_snow(i))*dtime/0.3) |
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agesno(i) = MAX(agesno(i),0.0) |
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ENDDO |
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END SUBROUTINE albsno |
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end module albsno_m |
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