Wili didn't know this thread existed, and opened another one in the Consequences category. I'm posting his opening comment here:
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We're already approaching record-breaking territory--nearly 12 million acres in Alaska and Canada so far--and there's plenty more to burn. I couldn't find a thread on this, but there's been a lot going on, and more to come.
The smoke, soot, and ultimately CO2 can have various effects on ice melt, as well, so it seems particularly important to have a thread keeping track of not only the fires, but also their immediate and long term consequences, and the broader contexts...
To kick it off, here's something from the SkS facebook page:
http://www.washingtonpost.com/news/energy-environment/wp/2015/07/13/2015-is-on-pace-to-be-the-worst-year-on-record-for-alaska-wildfires-heres-why-thats-scary/The stunning statistic that puts this year’s Alaskan wildfires in perspectiveEvery day they update the numbers. And every day, the number of acres burned in Alaska seems to leap higher yet again.
As of Monday, it is at 4,447,182.2 acres, according to the Alaska Interagency Coordination Center — a total that puts the 2015 wildfire season in sixth place overall among worst seasons on record. It’s very likely to move into fifth place by Tuesday — and it’s still just mid-July. There is a long way to go.
According to the Center, 2015 is now well ahead of the rate of burn seen in the worst year ever, 2004, when 6,590,140 acres burned in 701 fires. “Fire acreage totals are more than 14 days ahead of 2004”...
But it isn’t just Alaska — even more acres have burned this year across Canada. As of Sunday, 2,924,503.01 hectares had burned in 4,921 fires — and a hectare is much bigger than an acre. In fact, it’s about 2.47 of them. Thus, some 7,223,522 acres had burned in Canada as of Sunday. In Canada, too, wildfire activity this year is well above average levels.
Overall, the 2015 Canadian and Alaskan fire seasons have seen 11,670,704 acres burned so far, based on these numbers. (Which are always growing larger.) ...
Alaska is 80 percent underlain by permafrost, and Canada is 50 percent underlain by it.
These frozen soils now have a large number of fires burning atop them, and when permafrost thaws, it can begin to release carbon dioxide and methane into the atmosphere, worsening global warming.