Antinuclear

Steve Taylor, a research scientist with the Canadian Forest Service said the fire already ranks in the top six or seven largest fires seen in Canada in the satellite era, starting in 1970, when observations became most reliable. Especially since this is occurring in May, early in the wildfire season, that’s pretty incredible.

And so is another detail about this fire — the amount of carbon that it is apparently pouring into the atmosphere.

Taylor’s colleague, Werner Kurz, is a senior research scientist at the Canadian Forest Service and heads its carbon accounting team.  He said he generally estimates that for every hectare of forest land consumed in a fire like this one, about 170 tons of carbon-dioxide-equivalent emissions — so dubbed because they actually include not only carbon dioxide but also methane and nitrous oxide, two other greenhouse gases — head into the atmosphere.

That would mean that this single fire has contributed — for a rough estimate — some 85 million tons of carbon-dioxide-equivalent emissions.

The fire has also, at least temporarily, worsened the entire nation of Canada’s emissions of carbon dioxide…….

the burning of northern forests can also leave behind a dark upper surface layer that absorbs sunlight, heats up and then thaws permafrost, or frozen soil, beneath the surface. Fort McMurray is located in a zone of Canada that’s still far enough south to see only “isolated patches” of permafrost beneath the ground — but if any of that thaws in the wake of this fire, it will emit carbon into the atmosphere. And that might not get put back in the ground again, at least not on any time frame relevant to the immediate future.

The threat of megafires to permafrost becomes more and more of an issue as you travel farther north in Canada, Alaska and Siberia, which is why northern wildfires can be such a major problem — especially if they are worsening, as appears to be the case…….https://www.washingtonpost.com/news/energy-environment/wp/2016/05/20/the-fort-mcmurray-fires-stunning-pulse-of-carbon-to-the-atmosphere/