Atmospheric waves as scaling, turbulent phenomena
Item
Title (Dublin Core)
Atmospheric waves as scaling, turbulent phenomena
Description (Dublin Core)
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 (<i>Re</i>), emergent laws so that – in common with the emergent high-<i>Re</i> 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 <i>H</i><sub>wav</sub>/2. Using geostationary IR radiances, we estimate the parameters, finding that <i>H</i><sub>wav</sub> ≈ 0.17 ± 0.04 (the classical value = 2).
Creator (Dublin Core)
Pinel, J.
Lovejoy, S.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-14-3195-2014
https://acp.copernicus.org/articles/14/3195/2014/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
