FSim: the large-fire simulator — Guide to Best Practices version 0.3.1
FSim—the large-fire simulation system—is a comprehensive wildfire occurrence, growth and suppression simulation system that estimates wildfire probability and intensity across a large landscape (Finney and others 2011). Because large fires are rare, FSim generates many thousands of years of simulations, in order to capture a long enough time period to generate burn probabilities for the landscape. FSim is a stochastic simulation system that simulates many thousands of iterations, then integrates those iterations into a probabilistic result. An FSim iteration spans one entire year. For that reason, the terms “fire season” and “year” are often used synonymously with iteration. Simulations with FSim typically use ten- to thirtythousand iterations.