Fig. 5: Changes over time in the compounding effect of wildfires on flooding in California, as measured by the interaction term coefficient.

The map on the left is the point estimate, while the other is the 95% credible interval. Values greater than 1 indicate the compounding effect has increased over time. a Regional differences in the year and precursor count interaction term. b Interaction coefficient by region, including 95% credible intervals. For each region, we plot the mean and 95% credible interval that were obtained by sampling from the posterior distribution.