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| Titel |
Atmospheric waves as scaling, turbulent phenomena |
| VerfasserIn |
J. Pinel, S. Lovejoy |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 14, no. 7 ; Nr. 14, no. 7 (2014-04-02), S.3195-3210 |
| Datensatznummer |
250118555
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| Publikation (Nr.) |
 copernicus.org/acp-14-3195-2014.pdf |
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| Zusammenfassung |
| It is paradoxical that, while atmospheric dynamics are highly nonlinear and
turbulent, atmospheric waves are commonly modelled by linear or weakly
nonlinear theories. We postulate that the laws governing atmospheric waves
are in fact high-Reynolds-number (Re), emergent laws so
that – in common with the emergent high-Re turbulent laws – they are also
constrained by scaling symmetries. We propose an effective turbulence–wave
propagator which corresponds to a fractional and anisotropic extension of the
classical wave equation propagator, with dispersion relations similar to those
of inertial gravity waves (and Kelvin waves) yet with an anomalous
(fractional) order Hwav/2. Using geostationary IR radiances, we
estimate the parameters, finding that Hwav ≈ 0.17 ± 0.04
(the classical value = 2). |
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