A nonlinear oscillator describing storm track variability

Ambaum, M. H. P. ORCID: https://orcid.org/0000-0002-6824-8083 and Novak, L. (2014) A nonlinear oscillator describing storm track variability. Quarterly Journal of the Royal Meteorological Society, 140 (685). pp. 2680-2684. ISSN 0035-9009 doi: 10.1002/qj.2352

Abstract/Summary

We construct a two-variable model which describes the interaction between local baroclinicity and eddy heat flux in order to understand aspects of the variance in storm tracks. It is a heuristic model for diabatically forced baroclinic instability close to baroclinic neutrality. The two-variable model has the structure of a nonlinear oscillator. It exhibits some realistic properties of observed storm track variability, most notably the intermittent nature of eddy activity. This suggests that apparent threshold behaviour can be more accurately and succinctly described by a simple nonlinearity. An analogy is drawn with triggering of convective events.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/36277
Item Type	Article
Refereed	Yes
Divisions	Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
Publisher	Wiley
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