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American Focus > Blog > Environment > A third of the Arctic’s vast carbon sink now a source of emissions, study reveals
Environment

A third of the Arctic’s vast carbon sink now a source of emissions, study reveals

Last updated: January 27, 2025 1:11 am
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A third of the Arctic’s vast carbon sink now a source of emissions, study reveals
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A recent study published by The Guardian in collaboration with Climate Desk has revealed some alarming findings about the Arctic’s carbon storage. According to the study, a third of the Arctic’s tundra, forests, and wetlands have now become a source of carbon emissions due to global heating. This marks a significant shift in the region’s role as a carbon sink, which has been storing vast amounts of potential emissions in the permafrost for thousands of years.

The study, published in Nature Climate Change, analyzed data from 200 study sites between 1990 and 2020, showing that more than 30 percent of the Arctic region is now emitting CO2, a number that rises to 40 percent when emissions from wildfires are included. This shift is a result of the rapid warming of the Arctic’s boreal forests, wetlands, and tundra, which are releasing more carbon into the atmosphere as temperatures rise.

Lead researcher Sue Natali from the Woodwell Climate Research Center emphasized the significance of this shift, stating that it is the first time such a large-scale transformation has been observed across the entire Arctic tundra. Despite the region becoming greener in some areas due to plant growth after permafrost thaw, the overall trend is towards increased carbon emissions as permafrost continues to melt and release stored carbon.

The study highlights the urgent need for better monitoring of the Arctic ecosystem, which spans Siberia, Alaska, the Nordic countries, and Canada. Anna Virkkala, the lead author of the study, emphasized the importance of preserving the vast carbon reservoir in Arctic soils, which represents close to half of the Earth’s soil carbon pool. As temperatures rise, more organic matter becomes available for decomposition, leading to the release of carbon into the atmosphere in a feedback loop known as the permafrost-carbon feedback.

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The findings of this study underscore the growing concern among scientists about the impact of rising temperatures on natural carbon sinks that regulate the Earth’s climate. As these sinks come under strain, there is a risk that the planet’s ability to absorb human emissions will be compromised. It is crucial to continue monitoring and researching the Arctic ecosystem to better understand and mitigate the effects of climate change on this vital region.

TAGGED:ArcticsCarbonemissionsRevealsSinksourceStudyvast
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