Melting Arctic Permafrost Not Considered by IPCC Report

The Weather Underground’s atmospheric scientist reports that:

“A heavyweight boxer in the climate change match is missing from the fifth climate assessment report released by the Intergovernmental Panel on Climate Change (IPCC) on Friday.

Permafrost, which is frozen ground that doesn’t melt during the summer, covers 24 percent of the land in the northern hemisphere. It also stores approximately 1.5 trillion tons of carbon – twice the amount of carbon currently in the atmosphere.

When the organic matter that makes up permafrost thaws, the carbon it contains becomes exposed to the elements, which can escape into the air in the form of heat-trapping gases with the potential to knock out efforts to slow down global warming with a one-two punch.”

Read more at http://www.wunderground.com/news/melting-arctic-permafrost-looms-major-factor-warming-climate-change-20130927#lStXfbGStdwxOZ8G.99

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2 Responses to Melting Arctic Permafrost Not Considered by IPCC Report

  1. David says:

    Mary, thank you for alerting me/us to this.
    It’s scary, but I also wonder how did they leave out considering permafrost melt?
    With over 2,500 pages of text, 2 million gigabytes of data from climate model simulations, and citing 9,200 scientific publications, how could they not address this or even mention it?
    David

  2. David, I don’t know why permafrost melting would not have been included. If anyone can find out, let me know or post it here. I wonder if they are only looking at what they consider “man made” sources of GHGs and this is a collateral source from the heating itself. Just a guess. I think there may be methane in the ocean floor that could also become a problem. Mary

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