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module divergf_m |
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IMPLICIT NONE |
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contains |
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SUBROUTINE divergf(klevel, x, y, div) |
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! From libf/dyn3d/divergf.F, version 1.1.1.1 2004/05/19 12:53:05 |
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! P. Le Van |
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! Calcule la divergence à tous les niveaux d'un vecteur de |
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! composantes x et y. x et y sont des composantes covariantes. |
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USE comgeom, ONLY: apoln, apols, cuvsurcv, cvusurcu, unsaire |
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USE dimens_m, ONLY: iim |
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USE filtreg_m, ONLY: filtreg |
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USE paramet_m, ONLY: iip1, iip2, ip1jm, ip1jmi1, ip1jmp1, jjp1 |
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INTEGER, intent(in):: klevel |
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REAL, intent(in):: x(ip1jmp1, klevel), y(ip1jm, klevel) |
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real, intent(out):: div(ip1jmp1, klevel) ! in (unit of x, y) m-2 |
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! Variables locales : |
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INTEGER l, ij |
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REAL aiy1(iim) , aiy2(iim) |
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REAL sumypn, sumyps |
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!------------------------------------------------------------ |
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DO l = 1, klevel |
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DO ij = iip2, ip1jm - 1 |
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div(ij + 1, l) = cvusurcu(ij+1) * x(ij+1, l) & |
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- cvusurcu(ij) * x(ij , l) + cuvsurcv(ij-iim) * y(ij-iim, l) & |
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- cuvsurcv(ij+1) * y(ij+1, l) |
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ENDDO |
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DO ij = iip2, ip1jm, iip1 |
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div(ij, l) = div(ij + iim, l) |
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ENDDO |
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! Calcul aux pôles |
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DO ij = 1, iim |
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aiy1(ij) = cuvsurcv(ij) * y(ij , l) |
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aiy2(ij) = cuvsurcv(ij+ ip1jmi1) * y(ij+ ip1jmi1, l) |
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ENDDO |
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sumypn = SUM(aiy1) / apoln |
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sumyps = SUM(aiy2) / apols |
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DO ij = 1, iip1 |
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div(ij , l) = - sumypn |
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div(ij + ip1jm, l) = sumyps |
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ENDDO |
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end DO |
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CALL filtreg(div, jjp1, klevel, 2, 2, .TRUE.) |
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DO l = 1, klevel |
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DO ij = iip2, ip1jm |
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div(ij, l) = div(ij, l) * unsaire(ij) |
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ENDDO |
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ENDDO |
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END SUBROUTINE divergf |
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end module divergf_m |
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