Repository: Freie Universität Berlin, Math Department

Definition, detection and trackingof persistent structures in atmospheric flows

von Lindheim, Johannes and Harikrishnan, Abhishek P. and Dörffel, Tom and Klein, R. and Koltai, Péter and Mikula, Natalia and Müller, Annette and Névir, Peter and Pacey, George and Polzin, Robert and Vercauteren, Nikki (2022) Definition, detection and trackingof persistent structures in atmospheric flows. J. Math. Phys . (Submitted)

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Official URL: http://arxiv.org/abs/2111.13645

Abstract

Long-lived flow patterns in the atmosphere such as weather fronts, mid-latitude blockings or tropical cyclones often induce extreme weather conditions. As a consequence, their description, detection, and tracking has received increasing attention in recent years. Similar objectives also arise in diverse fields such as turbulence and combustion research, image analysis, and medical diagnostics under the headlines of "feature tracking", "coherent structure detection" or "image registration" - to name just a few. A host of different approaches to addressing the underlying, often very similar, tasks have been developed and successfully used. Here, several typical examples of such approaches are summarized, further developed and applied to meteorological data sets. Common abstract operational steps form the basis for a unifying framework for the specification of "persistent structures" involving the definition of the physical state of a system, the features of interest, and means of measuring their persistence. Johannes von Lindheim, Abhishek Harikrishnan, Tom Dörffel, Rupert Klein, Peter Koltai, Natalia Mikula, Annette Müller, Peter Névir, George Pacey, Robert Polzin, Nikki Vercauteren

Item Type:Article
Subjects:Mathematical and Computer Sciences > Mathematics > Applied Mathematics
Divisions:Department of Mathematics and Computer Science > Institute of Mathematics > Geophysical Fluid Dynamics Group
ID Code:2840
Deposited By: Ulrike Eickers
Deposited On:20 Aug 2022 08:53
Last Modified:25 Aug 2022 14:07

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