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GR: Here are some additional comments on the expanded permafrost-melt findings I reported this morning. That study did not project the effect on global temperature. The article below is by respected climate scientist Joe Romm. Perceptions of the permafrost threat has waxed and waned over the past few years, but I think it has permanently waxed this time. There is one correction. I thought permafrost carbon would be released largely as methane. Romm says there will be a substantial amount of methane, but that most of the gas will be CO2.

In this so-called “drunken forest,” in Alaska, the trees tilt because the once-frozen ground (permafrost) is thawing. CREDIT: NSIDC.

“New permafrost study underscores the critical importance of ambitious climate targets, like the Paris agreement.

“Global warming will defrost much more permafrost than we thought, a new study finds. Every 1°C (1.8°F) of additional warming would thaw one-quarter of the…