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SUBROUTINE exner_hyb(ps, p, pks, pk, pkf) |
SUBROUTINE exner_hyb(ps, p, pks, pk, pkf) |
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! From dyn3d/exner_hyb.F, version 1.1.1.1 2004/05/19 12:53:07 |
! From dyn3d/exner_hyb.F, version 1.1.1.1, 2004/05/19 12:53:07 |
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! Authors: P. Le Van, F. Hourdin |
! Authors: P. Le Van, F. Hourdin |
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! Calcule la fonction d'Exner : |
! Calcule la fonction d'Exner : |
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use dimens_m, only: iim, jjm, llm |
use dimens_m, only: iim, jjm, llm |
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use comconst, only: kappa, cpp |
use comconst, only: kappa, cpp |
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use comvert, only: preff |
use disvert_m, only: preff |
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use comgeom, only: aire_2d, apoln, apols |
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use filtreg_m, only: filtreg |
use filtreg_m, only: filtreg |
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REAL, intent(in):: ps(iim + 1, jjm + 1) |
REAL, intent(in):: ps(iim + 1, jjm + 1) |
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!------------------------------------- |
!------------------------------------- |
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pks = cpp * (ps / preff)**kappa |
pks = cpp * (ps / preff)**kappa |
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pks(:, 1) = SUM(aire_2d(:iim, 1) * pks(:iim, 1)) / apoln |
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pks(:, jjm + 1) = SUM(aire_2d(:iim, jjm + 1) * pks(:iim, jjm + 1)) / apols |
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unpl2k = 1. + 2 * kappa |
unpl2k = 1. + 2 * kappa |
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beta(:, :, llm) = 1. / unpl2k |
beta(:, :, llm) = 1. / unpl2k |
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/ (p(:, :, l) * unpl2k + p(:, :, l+1) * (beta(:, :, l+1) - unpl2k)) |
/ (p(:, :, l) * unpl2k + p(:, :, l+1) * (beta(:, :, l+1) - unpl2k)) |
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ENDDO |
ENDDO |
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pk(:, :, 1) = p(:, :, 1) * pks & |
pk(:, :, 1) = ps * pks & |
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/ (p(:, :, 1) * (1. + kappa) & |
/ (ps * (1. + kappa) + 0.5 * (beta(:, :, 2) - unpl2k) * p(:, :, 2)) |
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+ 0.5 * (beta(:, :, 2) - unpl2k) * p(:, :, 2)) |
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DO l = 2, llm |
DO l = 2, llm |
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pk(:, :, l) = beta(:, :, l) * pk(:, :, l-1) |
pk(:, :, l) = beta(:, :, l) * pk(:, :, l - 1) |
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ENDDO |
ENDDO |
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if (present(pkf)) then |
if (present(pkf)) then |
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pkf = pk |
pkf = pk |
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CALL filtreg(pkf, jjm + 1, llm, 2, 1, .TRUE., 1) |
CALL filtreg(pkf, jjm + 1, llm, 2, 1, .TRUE.) |
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end if |
end if |
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END SUBROUTINE exner_hyb |
END SUBROUTINE exner_hyb |