Aerobic decomposition, which occurs in the presence of oxygen, typically produces carbon dioxide. Crucially, measurements show that Arctic regions, once carbon sinks, are now emitting more greenhouse gases than they absorb.
Subsidence Signals Tipping Point Near
Greenhouse Gas Global Warming Potential (20-year) Primary Source in Thawing Permafrost Carbon Dioxide (CO2) 1 Aerobic decomposition of organic matter Methane (CH4) 84 Anaerobic decomposition in wetlands and water bodies Broader Ecological and Climatic Consequences The effects of the permafrost feedback loop are already visible across the Arctic and sub-Arctic regions. Observed Impacts and Current Data The effects of the permafrost feedback loop are already visible across the Arctic and sub-Arctic regions.
This "unknown unknown" represents a substantial gap in our ability to predict the pace and severity of future climate change. Greenhouse Gas Global Warming Potential (20-year) Primary Source in Thawing Permafrost Carbon Dioxide (CO2) 1 Aerobic decomposition of organic matter Methane (CH4) 84 Anaerobic decomposition in wetlands and water bodies The repercussions of the permafrost feedback loop extend far beyond atmospheric chemistry.
Subsidence Signals Tipping Point Near
Distinguishing Between Carbon Sources Not all carbon released from thawing permafrost is created equal. When temperatures rise, the permafrost thaws, exposing this organic matter to microbial activity.
More About Permafrost feedback loop
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More perspective on Permafrost feedback loop can make the topic easier to follow by connecting earlier points with a few simple takeaways.
