The wildfires ignited May 1 amid unusually hot and dry conditions that are indicative of climate change. Very little snow fell during the winter in western Canada, and warm temperatures quickly dried out forests and grasses, making the region a tinderbox.
The number of early season wildfires has been growing in the northern latitudes as the annual wildfire season growslonger and boreal forests burn at unprecedented rates. Northern regions are warming faster than the rest of the globe as greenhouse gases trap more and more heat in the atmosphere, and scientists expect warmer and drier weather to make conditions ripe for more wildfires.
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"I think this is one of the examples that illustrates profound vulnerability to all the systems we depend upon," saidJason Funk, senior climate scientist at the Union of Concerned Scientists. "I'm starting to think of climate change as this indiscriminate disrupter of the systems we depend upon."
About 2,400 Fort McMurray homes were destroyed in the fires, which are still burning out of control and have so far scorched about 1.5 million acres of eastern Alberta and western Saskatchewan.
Scientists say the climate threat to the tar sands mines could worsen with time.
Michael Mann, a climatologist at Penn State University who was among 100 scientists calling for a halt to a Canadian oil sands expansion because of their effect on the climate, said fossil fuel producers may now be awakening to the threat of climate change.
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"Whether it's unprecedented wildfires running rampant in the tar sands region of Canada, or monster hurricanes striking oil refineries in the Gulf of Mexico, even fossil fuel extraction is no longer safe from the aggravating impacts of climate change," Mann said.
Though the tar sands mines themselves did not burn, oil sands pipelines and energy companies operating nearby were shut down, and workers there were forced to flee as the inferno raced toward toward them. The entire city of Fort McMurray, the hub of the Canadian oil sands industry, evacuated - the largest wildfire evacuation Canadian history.
Oil sands production is expected to recover slowly following the blazes, taking until the beginning of July to return to pre-fire levels, EIA analyst Laura Singer said.
Neither the Canadian Association of Petroleum Producers nor the Alberta Energy Regulator responded to requests for comment.
Mabee said the biggest lesson to be learned from the wildfires is that large, concentrated and centralized energy production facilities, such as the tar sands, are vulnerable to disruption.
"What we need is probably something more like the internet - a decentralized extensive energy production system that can't be heavily disrupted by a single event," Mabee said.
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