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module tourpot_m |
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IMPLICIT NONE |
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contains |
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SUBROUTINE tourpot(vcov, ucov, massebxy, vorpot) |
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! From LMDZ4/libf/dyn3d/tourpot.F, version 1.1.1.1, 2004/05/19 12:53:06 |
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! Author: P. Le Van |
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! Objet : calcul du tourbillon potentiel |
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USE comgeom, ONLY: fext_2d |
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USE dimensions, ONLY: iim, jjm, llm |
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use filtreg_v_m, only: filtreg_v |
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REAL, intent(in):: vcov(:, :, :) ! (iim + 1, jjm, llm) |
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REAL, intent(in):: ucov(:, :, :) ! (iim + 1, jjm + 1, llm) |
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REAL, intent(in):: massebxy(:, :, :) ! (iim + 1, jjm, llm) mass of grid cell |
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real, intent(out):: vorpot(:, :, :) ! (iim + 1, jjm, llm) |
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! = (Filtre(d(vcov)/dx - d(ucov)/dy) + fext) / massebxy |
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! Local: |
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REAL rot(iim + 1, jjm, llm) |
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! relative vorticity multiplied by cell area, in m2 s-1 |
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INTEGER l, i, j |
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!--------------------------------------------------------------- |
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! Calcul du rotationnel du vent puis filtrage |
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forall (i = 1: iim, j = 1: jjm) rot(i, j, :) & |
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= vcov(i + 1, j, :) - vcov(i, j, :) + ucov(i, j + 1, :) - ucov(i, j, :) |
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rot(iim + 1, :, :) = rot(1, :, :) |
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CALL filtreg_v(rot, intensive = .true.) |
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forall (l = 1: llm) vorpot(:iim, :, l) & |
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= (rot(:iim, :, l) + fext_2d(:iim, :)) / massebxy(:iim, :, l) |
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vorpot(iim + 1, :, :)= vorpot(1, :, :) |
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END SUBROUTINE tourpot |
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end module tourpot_m |
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