Journal Graph (IMAGE) University of Missouri-Columbia Caption A Combustion-Climate diagram (CCd) of climate influences on fire probability. Climate simulated fire probabilities for 'natural' ecosystems using mean maximum temperature and annual precipitation in the PC2FM. This rate diagram explains two temporal differences related to the combustion of ecosystems. Temperature and precipitation affect the reaction rate at the time the reaction occurs while the rate of fuel production determines the fuel concentration and its combustion rate. These two timing conditions differentially determine the rates of the two components of the PC2FM model: ARterm and the PTrc3. Credit Michael Stambaugh, MU College of Food, Agriculture and Natural Resources Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.