Permafrost Thaw May Be Counterbalanced by Natural Rock Weathering
Scientists have discovered that when permafrost thaws, it can stimulate a natural geological process—rock weathering—that absorbs carbon dioxide from the atmosphere. In certain regions, the carbon uptake from this weathering was strong enough to fully offset, or even exceed, the greenhouse gas emissions released by rivers. This finding suggests that the climate impact of permafrost thaw may be mitigated by an accompanying increase in CO₂ removal through weathering.
The study highlights the complex interplay between cryospheric changes and terrestrial carbon sinks, indicating that natural feedback mechanisms could play a more significant role in climate regulation than previously understood.