Projecting the Risk of Future Climate Regime Shifts

Fig. 3 Upper panel: histogram (vertical bars) of zero crossing intervals from a set of five resampled and smoothed versions of the Gray et al. [17] index and the maximum likelihood (MLE) gamma probability distribution (solid curve) fit to the histogram. Lower panel: cumulative empirical distribution (vertical bars) and gamma cumulative distribution function (solid curve), indicating that the Kolmogorov-Smirnov goodness-of-fit criterion is satisfied at the 95% significance level.