Figure 2
From: Tipping points induced by parameter drift in an excitable ocean model
Typical solutions in the two regimes of the model’s autonomous version, cf. Eq. (1), with \(\alpha = \beta = 0\) in the forcing given by Eq. (2). The constant values \(\gamma\) of the factor G(t) in the forcing are shown in the upper panels by a solid purple line, with (a) \(\gamma =0.9\) and (c) \(\gamma =1.2\). The corresponding model solutions are plotted for \(\Psi _{3}(t)\) in the lower panels (b) and (d); see text and Fig. 4 for the initialization of the trajectories in the lower panels.
