Articles | Volume 22, issue 3
Nonlin. Processes Geophys., 22, 275–288, 2015
https://doi.org/10.5194/npg-22-275-2015
Nonlin. Processes Geophys., 22, 275–288, 2015
https://doi.org/10.5194/npg-22-275-2015

Research article 07 May 2015

Research article | 07 May 2015

Oscillations in a simple climate–vegetation model

J. Rombouts and M. Ghil

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Short summary
Our conceptual model describes global temperature and vegetation extent. We use elements from Daisyworld and classical energy balance models and add an ocean with sea ice. The model exhibits oscillatory behavior within a plausible range of parameter values. Its periodic solutions have sawtooth behavior that is characteristic of relaxation oscillations, as well as suggestive of Quaternary glaciation cycles. The model is one of the simplest of its kind to produce such oscillatory behavior.