The North American country is in the middle of its worst wildfire season on record, with more than 5,800 fires burning over 153,000 square kilometres from one end of the country to the other.
Though the analysis looked only at a region of Quebec, hot temperatures and drought conditions also were at a record level in the rest of Canada, “and we know that those fire-prone conditions also are increasing in severity, especially out West,” Boulanger said.
The researchers then compared that to a world without climate change using multiple computer simulations and historical weather data, a technique widely accepted in the scientific community. They found that the fire-weather conditions this year were twice as likely. “To me, the scariest finding is just the magnitude of the greater likelihood of intense fire weather because of climate change,” said Reich, head of the Institute for Global Change Biology at the University of Michigan and a professor at the University of Minnesota. “It’s not just 10 percent more likely or 20 percent -- there’s a 700 percent” greater likelihood.
Canada’s fire season began early, after snow melted quickly and the warmest May-June period in more than 80 years combined with sparse rainfall to dry out vegetation and make it more flammable. Windy conditions also drove the wildfires throughout most of the country.
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