Fig. S1 Piecewise linear functions for plant growth (fi, g, a - with g and a representing grasses and trees respectively), fire probability (PR) and soil moisture index (w); and an illustration of the thresholds defining a fire event.

Fig. S2 Annual cycle of generated precipitation, temperature and lightning flashes at four different locations.

Fig. S3 Variations of function h defined in Table 1 used in the model, depending on the empirical parameters k and b (see Table 1).

Notes S1 Complete description of the climate–vegetation–natural fire (CVNF) model.

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