A group of researchers from the United Kingdom, Switzerland, and the Czech Republic have put forward a new strategy to address carbon storage by sinking mature trees from the expansive boreal forest into the deep Arctic Ocean. This initiative aims to securely store carbon for extended periods.
In a recent study published in the online journal “npj Climate Action,” the scientists utilized computer simulations to assess the impact of removing specific stands of aging, fire-prone trees in regions like Canada, Alaska, and Russia. The proposed method involves floating these trees down six Arctic rivers, including the Yukon and Mackenzie, and submerging them in the Arctic Ocean. Concurrently, new, rapidly growing trees would be planted to hasten the absorption of carbon from the atmosphere.
According to the study findings, executing this process annually in three designated areas covering 10,000 square kilometers each, only one percent of the boreal forest, could remove one gigaton of carbon dioxide from the atmosphere every year. However, this amount is relatively insignificant compared to global carbon emissions, which reached 37.8 gigatons in 2024.
While the concept of sinking trees for carbon storage shows potential benefits, it also raises concerns about the energy and associated carbon emissions required for implementation. The logistical challenges include cutting down trees, transporting them to rivers, floating them to the ocean, and ensuring they sink to the seabed. Moreover, the long-term effects on marine organisms and the disruption to forest ecosystems, which support diverse forms of life, need to be considered.
Furthermore, there are social implications to be addressed, such as the impact on Indigenous communities living in these forested areas. This proposal is one among various geoengineering ideas aimed at mitigating rising carbon emissions, but the primary focus should remain on reducing fossil fuel usage. Transitioning to clean energy sources like solar, wind, nuclear, and fusion power is essential for achieving sustainable energy production and combating climate change.