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Researchers develop model to predict wildfire occurrence

A team of researchers from the University of Missouri and the U.S. Forest Service are continuing an effort to research how climate influences wildfire frequency. The model focuses on two variables – temperature and precipitation – to understand how climate drives wildfire across the world.

After acquiring historic fire occurrence data from tree ring and other studies they developed a mathematical model using temperature and precipitation as the two variables. In validation runs, the predictions the model generated were close to actual fire patterns.  As they continued to collect additional historic data from locations around the world during the last several years, they refined the model making it more accurate.

research wildfire probability temperature precipitation
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. (From the team’s research)

“You can see patterns in global wildfire frequency that are obviously predictable,” Michael Stambaugh, an associate research professor in forestry, said. “For example, ¹Greenland doesn’t burn. It’s too icy and wet. It’s on one end of the spectrum. The other end of the spectrum is a place like the Sahara Desert, which doesn’t burn either. It’s too dry and there’s not enough fuel. Between those two extremes, we were confident that there was a way to describe the transition.”

The work is being done by Richard Guyette, Michael Stambaugh, Daniel Dey, and Rose-Marie Muzika who developed what they call the “Physical Chemical Fire Frequency Model (PC2FM)”.

More information about their research.

 

¹Note from Bill: To be clear, Greenland RARELY burns. 

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