ENVIRONMENTAL INTEL Arctic Permafrost Carbon Release Accelerating Beyond Models Arctic permafrost contains approximately 1,700 gigatons of frozen carbon—roughly twice the amount currently in the atmosphere. Recent studies from 2020-2024 show thaw rates 4x faster than 1990s projections, releasing methane and CO2 at rates that could add 0.13-0.27°C additional warming by 2100 independent of other emissions. Historical data shows permafrost temperatures increased 0.7°C per decade in the 2000s versus 0.2°C in the 1980s, representing exponential acceleration. Why this matters: This is a critical feedback loop—warming thaws permafrost, which releases greenhouse gases that cause more warming. Unlike emissions we can reduce, permafrost carbon release represents a largely irreversible trigger point that weakens our control over climate trajectories regardless of mitigation efforts.