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module tourabs_m |
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IMPLICIT NONE |
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contains |
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SUBROUTINE tourabs(ntetaSTD, vcov, ucov, vorabs) |
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! Author: I. Musat, 28 October 2004, adaptation de tourpot |
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! Objet : calcul de la vorticité absolue |
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USE dimens_m, ONLY: iim, jjm |
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USE paramet_m, ONLY: iip1, ip1jm, ip1jmp1 |
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USE comconst, ONLY: rad |
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USE comgeom, ONLY: cu, cv, fext, rlatv, unsairez |
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USE filtreg_m, ONLY: filtreg |
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USE nr_util, ONLY: pi |
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INTEGER, intent(in):: ntetaSTD |
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REAL, intent(in):: vcov(ip1jm, ntetaSTD), ucov(ip1jmp1, ntetaSTD) |
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REAL, intent(out):: vorabs(ip1jm, ntetaSTD) |
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! vorabs = Filtre(d(vcov)/dx - d(ucov)/dy) + fext |
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! Variables locales: |
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INTEGER l, ij, i, j |
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REAL rot(ip1jm, ntetaSTD) |
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!-------------------------------------------------------------------- |
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! Calcul du rotationnel du vent puis filtrage |
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DO l = 1, ntetaSTD |
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DO i = 1, iip1 |
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DO j = 1, jjm |
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ij = i + (j - 1) * iip1 |
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IF (ij <= ip1jm - 1) THEN |
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IF (cv(ij) == 0. .OR. cv(ij+1) == 0. .OR. cu(ij) == 0. & |
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.OR. cu(ij+iip1) == 0.) THEN |
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rot(ij, l) = 0. |
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ELSE |
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rot(ij, l) = (vcov(ij + 1, l) / cv(ij + 1) - vcov(ij, l) & |
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/ cv(ij)) / (2. * pi * RAD * cos(rlatv(j))) & |
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* real(iim) + (ucov(ij + iip1, l) / cu(ij + iip1) & |
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- ucov(ij, l) / cu(ij)) / (pi * RAD) * (real(jjm) - 1.) |
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ENDIF |
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ENDIF |
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end DO |
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end DO |
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! correction pour rot(iip1, j, l) |
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! rot(iip1, j, l) = rot(1, j, l) |
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DO ij = iip1, ip1jm, iip1 |
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rot(ij, l) = rot(ij - iim, l) |
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end DO |
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end DO |
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CALL filtreg(rot, jjm, ntetaSTD, 2, 1, .FALSE.) |
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DO l = 1, ntetaSTD |
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DO ij = 1, ip1jm - 1 |
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vorabs(ij, l) = (rot(ij, l) + fext(ij) * unsairez(ij)) |
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end DO |
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! correction pour vorabs(iip1, j, l) |
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! vorabs(iip1, j, l)= vorabs(1, j, l) |
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DO ij = iip1, ip1jm, iip1 |
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vorabs(ij, l) = vorabs(ij - iim, l) |
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end DO |
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end DO |
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END SUBROUTINE tourabs |
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end module tourabs_m |
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