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Related Articles from SNS
Researchers ask us to rethink the ways we see and study the Arctic
Researchers ask us to rethink the ways we see and study the Arctic Lisa Lock Scientific Editor Andrew Zinin Lead Editor The Arctic and sub-Arctic are places where communities already live, produce knowledge and self-govern. Yet recent geopolitical and economic involvement are bringing renewed interest in the region. Since the 1990s, research output about the Arctic has doubled, with approximately 11,000 Arctic-focused publications now produced annually.
Sea ice loss in the Arctic has triggered a critical tipping point that's destroying the food chain
Sea ice loss in the Arctic has triggered a critical tipping point that's destroying the food chain Researchers say the Arctic Ocean crossed a biological tipping point in 2009, when nitrate levels in the water suddenly started dropping due to a drastic reduction in sea ice extent. The Arctic Ocean has crossed a tipping point that is wreaking havoc on the region's food chain, with potentially dire consequences for commercial fishing and the ocean's capacity to soak up carbon, a new study...
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...
Fears Russia could threaten Arctic chokepoint that puts London within range of hypersonic missiles
Fears Russia could threaten Arctic chokepoint that puts London within range of hypersonic missiles UK’s defence secretary has warned Russia poses ‘greatest threat to Arctic and High North security since the Cold War’ amid growing military presence - Bookmark - CommentsGo to comments Russia is threatening a strategic chokepoint in the Arctic, control of which would place it within missile range of London, Norway’s defence minister has warned. Tore Sandvik told The Times that he was concerned...
Could Russia hit northern Europe if it gained control of Arctic’s Bear Gap?
Could Russia hit northern Europe if it gained control of Arctic’s Bear Gap? Norwegian defence minister warns Russia could pose a grave risk and must not be allowed to control the corridor. A strategically important stretch of Arctic Ocean, known as the Bear Gap, has become the latest focus of concerns about Russia’s military ambitions in the far north.
Why the Arctic's rivers are rusting now and where toxic orange water could spread next
Why the Arctic's rivers are rusting now and where toxic orange water could spread next Sadie Harley Scientific Editor Robert Egan Associate Editor Scientists have identified the two biggest reasons that once-pristine rivers across the Arctic are growing cloudy with toxic orange iron particles that smother insects and suffocate fish. A new study published in Communications Earth & Environment builds on earlier research documenting widespread contamination in Alaska's Brooks Range. As the...
Arctic Ocean passed a tipping point and scientists say it may never recover
The Arctic Ocean may have crossed a dangerous tipping point. Scientists say the rapid disappearance of sea ice is triggering a hidden chemical shift that is stripping the ocean of nitrate — a nutrient essential for the tiny plankton that support Arctic life. As nitrate levels plunge, the entire food web could feel the impact, from fish and seabirds to whales and polar ecosystems.
Efficiently Restructuring Sovereign Debt via Arctic Auctions with Convex Costs
Announce Type: new Abstract: We study the problem of computing competitive equilibria in the Arctic product-mix auction, originally developed for the Icelandic government for exchanging blocked financial accounts, and more recently proposed by IMF staff for sovereign debt restructuring. From the buyers' perspective, the Arctic auction is equivalent to the quasi-linear Fisher market. However, unlike the standard Fisher model, the seller can express rich supply preferences through explicit...
Life in the ancient Arctic: Tiny teeth of newly discovered species suggest it was a cradle of mammalian evolution
Life in the ancient Arctic: Tiny teeth of newly discovered species suggest it was a cradle of mammalian evolution Lisa Lock Scientific Editor Robert Egan Associate Editor A fossil mammal tooth smaller than a grain of rice does not announce itself loudly. It must be hard won from sediment and stone. Then, under a microscope, it reveals itself—no longer just a speck of blackness but a surface of cusps, ridges, and worn edges.