Characterising early warning signals for critical transitions using a distribution moment approximation for the Fokker–Planck equation

Graham M. Donovan

Physica A: Statistical Mechanics and its Applications, 2024, vol. 646, issue C

Abstract: Critical transitions are abrupt transition in time-varying systems. They occur in many different scientific contexts, ranging from climate and ecology to physiology and electricity transmission, and can be driven by different underlying mathematical structures. Here we focus on those driven by underlying bifurcations (so-called B-tipping), which are associated with qualitative changes in the underlying system energy landscape. Building on Kuehn’s fast-slow framework (Kuehn, 2011), we relax the assumptions of stationarity and reflecting boundary conditions by employing a distribution moment approach, which allows us to classify the utility of early warning signals (such as the variance) even when the timescales are not well separated, or the reflection boundary assumption is restrictive. This allows a more complete characterisation of moment-based early warning signals.

Keywords: Regime shifts; Catastrophic shifts; Tipping points; Early warning signals (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:646:y:2024:i:c:s0378437124003777

DOI: 10.1016/j.physa.2024.129868

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