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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_2d, cvusurcu_2d, unsaire_2d |
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USE dimens_m, ONLY: iim, jjm |
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USE filtreg_scal_m, ONLY: filtreg_scal |
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INTEGER, intent(in):: klevel |
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REAL, intent(in):: x(iim + 1, jjm + 1, klevel), y(iim + 1, jjm, klevel) |
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real, intent(out):: div(iim + 1, jjm + 1, klevel) ! in (unit of x, y) m-2 |
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! Variables locales : |
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INTEGER l, i, j |
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!------------------------------------------------------------ |
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DO l = 1, klevel |
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forall (i = 2:iim + 1, j = 2:jjm) div(i, j, l) = cvusurcu_2d(i, j) & |
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* x(i, j, l) - cvusurcu_2d(i - 1, j) * x(i - 1, j , l) & |
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+ cuvsurcv_2d(i, j - 1) * y(i, j - 1, l) - cuvsurcv_2d(i, j) & |
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* y(i, j, l) |
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div(1, 2:jjm, l) = div(iim + 1, 2:jjm, l) |
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! Calcul aux pôles |
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div(:, 1, l) = - SUM(cuvsurcv_2d(:iim, 1) * y(:iim, 1, l)) / apoln |
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div(:, jjm + 1, l) = SUM(cuvsurcv_2d(:iim, jjm) * y(:iim, jjm, l)) & |
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/ apols |
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end DO |
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CALL filtreg_scal(div, direct = .true., intensive = .false.) |
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DO l = 1, klevel |
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div(:, 2:jjm, l) = div(:, 2:jjm, l) * unsaire_2d(:, 2:jjm) |
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ENDDO |
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END SUBROUTINE divergf |
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end module divergf_m |
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