Devastating wildfires
tore through the town of Fort McMurray in Alberta, Canada, on Tuesday,
razing entire neighborhoods and displacing nearly 80,000
people. Unusually hot, dry weather contributed to the blaze, which
experts say may be linked to temperature increases associated with
climate change.
“The conditions that made these wildfires possible — namely, the
unusually warm and dry winter the region has experienced — almost
certainly had a climate change component,” director of Pennsylvania
State University’s Earth System Science Center, told The Huffington Post
on Wednesday.
The past few months have been some of the
hottest in history.
Temperatures in Alberta reached records heights in May, topping 90
degrees on Tuesday — 40 degrees above average for early spring. While
unusual, those sorts of record temperatures are consistent with the
steady warming of Canada’s western provinces.
“Historical data show that this region has warmed appreciably over
the past half century,” Mann said. “Alberta lies right within the
bullseye of this pattern of anomalous warmth.”
Hotter-than-usual temperatures, combined with with high winds and low
snow melt, have significantly increased wildfire risk in the region.
“The forest area burned in Alberta has more than doubled” over the last
50 years, Mann said.
Over 300 wildfires have rocked Alberta since
March, a full month before fire season usually begins, according to the
province’s Ministry of Agriculture and Forestry. Over 7,000 wildfires
burned through 4 million hectares of land across the country last year,
according to the Canadian Interagency Forest Fire Centre.
The conditions are also due in part to El Nino, which typically causes
dry weather in
Canada, experts say. But rising global temperatures have made an
already dry winter even drier, according to Kevin Trenberth, a
distinguished senior scientist at the National Center for Atmospheric
Research.
“Things dry out a bit quicker, the vegetation gets tinder dry,
setting the stage for wildfires,” Trenberth told HuffPost. “In general
in the west of North America the fire season has become many weeks
longer that it was prior to the 1970s as a result.”
In addition to getting longer, fire season is also becoming more intense.
“[Wildfires] have certainly come more ferociously in the years gone by,” Darby Allen, a fire chief in Alberta,
told the Canadian Broadcasting Corporation on Monday. “We’ve had four significant fires in the last five days or so, and that is pretty intense.”
Wildfires burned over 10 million acres in the U.S. last year, setting a national record. This year’s fire season may be even
longer and hotter in some parts of the country than it has been in the past, experts say.
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