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Titel |
Long range predictability of atmospheric flows |
VerfasserIn |
R. Robert, C. Rosier |
Medientyp |
Artikel
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Sprache |
Englisch
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ISSN |
1023-5809
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Digitales Dokument |
URL |
Erschienen |
In: Nonlinear Processes in Geophysics ; 8, no. 1/2 ; Nr. 8, no. 1/2, S.55-67 |
Datensatznummer |
250005288
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Publikation (Nr.) |
copernicus.org/npg-8-55-2001.pdf |
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Zusammenfassung |
In the light of
recent advances in 2D turbulence, we investigate the long range
predictability problem of atmospheric flows. Using 2D Euler equations, we
show that the full nonlinearity acting on a large number of degrees of
freedom can, paradoxically, improve the predictability of the large scale
motion, giving a picture opposite to the one largely popularized by
Lorenz: a small local perturbation of the atmosphere will progressively
gain larger and larger scales by nonlinear interaction and will finally
cause large scale change in the atmospheric flow. |
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