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Amplified Arctic iceberg traffic reshapes benthic biodiversity
Abstract The Arctic is undergoing rapid warming, resulting in retreating sea ice and glaciers1, yet how cryospheric changes propagate into the deep ocean remains poorly understood2. Here we identify a climate-driven mechanism linking accelerating glacier disintegration to an increase in deep-sea hard-bottom habitats far beyond calving fronts. Seafloor observations in Fram Strait show a localized increase in the density and patchiness of dropstones delivered by debris-laden icebergs.
Arctic river deltas face rising climate pressure while holding vast frozen carbon reserves
Arctic river deltas face rising climate pressure while holding vast frozen carbon reserves Gaby Clark Scientific Editor Robert Egan Associate Editor Many rivers flow into the Arctic Ocean north of the Arctic Circle—including the Lena in Siberia and the Mackenzie River in Canada. The deltas of these large and small rivers store large amounts of carbon, which is bound there in frozen soils and sediments.
On-demand Arctic observations with low-cost balloon systems could sharpen local storm forecasts
On-demand Arctic observations with low-cost balloon systems could sharpen local storm forecasts Sadie Harley Scientific Editor Robert Egan Associate Editor Arctic communities are increasingly exposed to dangerous weather events due to climate change and rely on accurate weather forecasts. However, conditions in the lower atmosphere remain poorly observed in the Arctic because monitoring systems are expensive and difficult to deploy. Now, researchers propose a new framework for on-demand...
Geoengineering can thicken Arctic sea ice, but for how long?
Each winter, Canada builds more than 7000 kilometres of ice roads, in part by drilling holes in lake ice and pumping water onto the surface, where it freezes and thickens the ice for massive vehicles, as seen in the TV series Ice Road Truckers. If we did the same thing on top of Arctic sea ice, could we thicken it enough to stop it from disappearing? That’s the question tested by geoengineering researchers in field trials in Canada and Norway in 2024 and 2025.