Permafrost
A layer of soil or rock that remains below 0°C for more than two consecutive years, widely distributed across the Arctic Circle and high-latitude alpine regions, and storing large amounts of organic carbon.
Core Facts
Timeline (last 90 days)
Permafrost covers large areas of land in the Northern Hemisphere and stores large amounts of organic carbon and methane hydrates.
High-latitude regions are warming several times faster than the global average, causing permafrost thaw and the release of carbon dioxide and methane as microorganisms decompose organic matter.
Satellite remote sensing, ground sensor networks, and AI fire prediction are becoming cutting-edge tools for monitoring and protecting permafrost, but they can only provide early warning and delay, not stop the long-term trend of permafrost carbon release.
After permafrost thaws, microbial decomposition of organic matter releases carbon dioxide and methane, and methane's greenhouse effect over a 100-year scale is about 28 times that of carbon dioxide.
The organic carbon stored in permafrost far exceeds the carbon currently in the atmosphere; the carbon stored in Northern Hemisphere permafrost regions is about twice the carbon content of the atmosphere.
Arctic soils store a large amount of organic carbon, totaling about twice the carbon in the atmosphere.
Wildfires burn off surface organic matter and change soil thermal conditions, potentially accelerating permafrost thaw and releasing carbon dioxide and methane, forming a positive feedback loop.
All Facts (7)
Arctic soils store a large amount of organic carbon, totaling about twice the carbon in the atmosphere.
70%UnverifiedHigh-latitude regions are warming several times faster than the global average, causing permafrost thaw and the release of carbon dioxide and methane as microorganisms decompose organic matter.
50%UnverifiedPermafrost covers large areas of land in the Northern Hemisphere and stores large amounts of organic carbon and methane hydrates.
50%UnverifiedAfter permafrost thaws, microbial decomposition of organic matter releases carbon dioxide and methane, and methane's greenhouse effect over a 100-year scale is about 28 times that of carbon dioxide.
50%UnverifiedThe organic carbon stored in permafrost far exceeds the carbon currently in the atmosphere; the carbon stored in Northern Hemisphere permafrost regions is about twice the carbon content of the atmosphere.
50%UnverifiedSatellite remote sensing, ground sensor networks, and AI fire prediction are becoming cutting-edge tools for monitoring and protecting permafrost, but they can only provide early warning and delay, not stop the long-term trend of permafrost carbon release.
50%UnverifiedWildfires burn off surface organic matter and change soil thermal conditions, potentially accelerating permafrost thaw and releasing carbon dioxide and methane, forming a positive feedback loop.
50%