Articles | Volume 20, issue 12
Nat. Hazards Earth Syst. Sci., 20, 3439–3454, 2020
Nat. Hazards Earth Syst. Sci., 20, 3439–3454, 2020

Research article 14 Dec 2020

Research article | 14 Dec 2020

A classification scheme to determine wildfires from the satellite record in the cool grasslands of southern Canada: considerations for fire occurrence modelling and warning criteria

Dan K. Thompson and Kimberly Morrison

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Cited articles

Agriculture and Agri-Food Canada: Land Use 2010, available at: (last access: 9 March 2020), 2018. 
Alexander, M. E.: Surface fire spread potential in trembling aspen during summer in the Boreal Forest Region of Canada, For. Chron., 86, 200–212,, 2010. 
Beverly, J. L. and Bothwell, P.: Wildfire evacuations in Canada 1980–2007, Nat. Hazards, 59, 571–596,, 2011. 
Beverly, J. L. and Wotton, B. M.: Modelling the probability of sustained flaming: predictive value of fire weather index components compared with observations of site weather and fuel moisture conditions, Int. J. Wildland Fire, 16, 161–173,, 2007. 
Short summary
We describe critically low relative humidity and high wind speeds above which only documented wildfires were seen to occur and where no agricultural fires were documented in southern Canada. We then applied these thresholds to the much larger satellite record from 2002–2018 to quantify regional differences in both the rate of observed burning and the number of days with critical weather conditions to sustain a wildfire in this grassland and agricultural region.
Final-revised paper