•1 min read•from Oceanography News -- ScienceDaily
A massive arctic thaw is unleashing carbon frozen for thousands of years
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A groundbreaking study highlights the profound impact of Arctic permafrost thawing on our planet’s carbon dynamics. As the permafrost thaws, it significantly alters river systems and releases ancient carbon that has been sequestered for millennia. Analyzing decades of high-resolution data from northern Alaska, researchers observed increased runoff and higher levels of dissolved carbon in rivers, alongside an extended thawing season. This released carbon eventually flows into the ocean, where it transforms into carbon dioxide, exacerbating global warming and emphasizing the urgency of climate action.
A sweeping new study reveals that as Arctic permafrost thaws, it is dramatically reshaping rivers and releasing vast amounts of ancient carbon that had been locked away for thousands of years. By analyzing decades of high-resolution data across northern Alaska, scientists found that runoff is increasing, rivers are carrying more dissolved carbon, and the thawing season is stretching further into the fall. This carbon eventually reaches the ocean, where some of it turns into carbon dioxide, intensifying global warming.
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