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Arctic

A photograph of polar stratospheric clouds near Kiruna, Sweden.
Posted inEditors' Vox

New Insights into Polar Stratospheric Clouds

by Lamont R. Poole 18 October 202126 April 2022

New satellite observations of polar stratospheric clouds have advanced our understanding of how, when, and where they form, their composition, and their role in ozone depletion.

Sea ice floats in the southern Arctic Ocean.
Posted inNews

When Wild Weather Blew Old Sea Ice South

by Andrew Chapman 16 September 202121 March 2022

Last winter, an unprecedented high-pressure system over the Arctic drove nearly a quarter of old sea ice into warmer waters, putting it at greater risk of melting.

Active layer detachments in the Brooks Range, Alaska
Posted inResearch Spotlights

Ice Lenses May Cause Many Arctic Landslides

by Morgan Rehnberg 13 August 202120 October 2021

When permafrost thaw reaches concentrations of ice underneath the surface, it may trigger local soil instability.

The research vessel CCGS Hudson in Southwind Fjord, Baffin Island, with the iceberg that initiated a submarine landslide in the background.
Posted inNews

An Iceberg May Have Initiated a Submarine Landslide

by Andrew Chapman 20 July 20216 December 2021

A new study shows that icebergs may initiate submarine landslides when they collide with the seafloor.

Exiles anchored near a receding glacier and iceberg.
Posted inNews

Studying Arctic Fjords with Crowdsourced Science and Sailboats

by Andrew Chapman 3 June 202126 October 2021

A new study demonstrates the benefits of crowdsourcing science using sailboats to better understand the impact of melting sea ice in the Arctic.

Sunrise over snow.
Posted inNews

Laser Flashes Shed Light on a Changing Arctic

by Katherine Kornei 18 May 202116 February 2022

An ongoing project in northern Alaska is using pulses of laser light to monitor anthropogenic activity, ice quakes, and marine wildlife.

Satellite image of the icy Sannikov Strait
Posted inNews

A Massive Methane Reservoir Is Lurking Beneath the Sea

by Fanni Daniella Szakal 27 April 202114 October 2021

Scientists have found a methane reservoir below the permafrost seabed of the Laptev Sea—a reservoir that could suddenly release large amounts of the potent greenhouse gas.

A house built on permafrost, now thawing, tilts dramatically.
Posted inNews

Mapping the People, Places, and Problems of Permafrost Thaw

by J. Besl 21 April 202128 September 2021

By combining demography data with permafrost maps, researchers provide a first count of the population on permafrost and predict its imminent decline.

A bird’s-eye view of a green, spiral-shaped aurora above Earth from space. An orange, spiral-shaped funnel of electrons is visible above the aurora.
Posted inNews

A Space Hurricane Spotted Above the Polar Cap

by Kate Wheeling 9 April 202126 October 2021

Researchers have identified a high-latitude phenomenon that looks remarkably like a tropospheric hurricane, with spinning arms of plasma and a shower of electrons.

Lightning flashes over jagged cliffs
Posted inNews

Arctic Lightning Up 300% in One 11-Year Study

by Katherine Kornei 26 March 202128 September 2021

The increase may be due to climate change, researchers suggest, but the trend hasn’t been observed in other lightning data sets.

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