Permafrost Thaw Methane Release

Permafrost thaw methane release acts as a dangerous feedback loop that could accelerate warming faster than any other non-CO₂ source. Arctic permafrost stores roughly 1,500 billion tonnes of organic carbon, and its thaw releases methane 80 times more potent than CO₂ over 20 years. A single large methane pulse could undo emissions reductions equivalent to all global transportation within a decade. The data point here is stark: even a 5% release could add 0.5°C to global warming.