GR.– A recurring warning from climatologists is the possibility that melting permafrost will generate a positive feedback loop in global warming. Such an event would move the “Climate Emergency” into an extreme phase from which we could not recover without massive damage to Earth’s ecosystems and the current human civilizations. Prudence demands that we never dismiss such fears. We must try to prevent the event, plan contingency responses, and hope it never happens.
“Perhaps the most worrisome threat is that because the Arctic is warming so much faster than the globe as a whole, the permafrost — soil that remains frozen year-round — is thawing. As it does, organic matter which is trapped within can decay, and when it does it releases CO2 into the atmosphere, except those places where instead of releasing CO2 it releases CH4.” — Tamino.
RobertScribbler.– “With the Northern Hemisphere Pole warming at a rate 2-3 times faster than the rest of the globe, there’s a risk that we start to set off a kind of runaway warming feedback. We may be near that threshold now… God help us if we’ve crossed it… ” Continue reading: CO2’s Vertigo-Inducing Rate of Rise — In First 5 Months of 2016 Hothouse Gas Concentration Rocketed 3.7 Parts Per Million Above 2015 | robertscribbler