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Arctic

A satellite image shows the Atlantic Ocean and the eastern coast of the United States. The area is covered with clouds that have been colored yellow and pink to indicate their altitude.
Posted inNews

New Research Shows More Extreme Global Warming Impacts Looming for the Northeast

by Bob Berwyn 21 July 202521 July 2025

One new study identifies a 17% increase in the destructive potential of the strongest nor’easters, while another bolsters links between Arctic ice melt and dangerous blizzards.

A map of the United States and a graph.
Posted inEditors' Highlights

The Mid-20th Century Winter Cooling in the Eastern U.S. Explained

by Alberto Montanari 3 July 20253 July 2025

A new analysis of historical jet stream behavior reveals that increases in jet stream waviness accounted for 55-71% of winter cooling in the eastern United States from 1958 to 1988.

A small vessel sails past a glacier.
Posted inNews

New Satellite Adds Evidence of an Earth-Shaking Wave

by J. Besl 1 July 20251 July 2025

A tsunami struck a fjord in East Greenland in 2023, ringing seismometers for nine straight days. A new satellite study provides the first observational evidence of the waves.

Photo of a valley with a dark water tracks leading to a sinuating river.
Posted inEditors' Vox

Water Tracks: The Veins of Thawing Landscapes

by Joanmarie Del Vecchio and Sarah G. Evans 25 June 202525 June 2025

Tracing and tracking change in permafrost flowpaths could reveal the dynamics of warming poles.

Close-up view of pieces of sea ice separated by a strip of open water.
Posted inScience Updates

Finding Consensus on Arctic Ocean Climate History

by Jochen Knies, Matt O’Regan and Claude Hillaire Marcel 25 June 202525 June 2025

Understanding the effects of a “blue” Arctic Ocean on future climate requires a coordinated effort to study Earth’s past warm periods using a variety of classical and cutting-edge methods.

In the foreground is a beach covered in brownish seaweed, farther back is a body of water coated in chunks of floating ice, and in the distance are mountains and the sky.
Posted inResearch Spotlights

Seaweed Surges May Alter Arctic Fjord Carbon Dynamics

Sarah Stanley, Science Writer by Sarah Stanley 16 May 202516 May 2025

Climate change–accelerated seaweed growth could cause seaweed-dependent microbes to proliferate and consume more oxygen, leading to a rise in oxygen-starved zones.

Aerial photo of Arctic ponds.
Posted inEditors' Highlights

Beyond Up and Down: How Arctic Ponds Stir Sideways

by Valeriy Ivanov 13 May 20257 May 2025

Contrary to common assumptions, Arctic ponds mix in more than one direction. A new study finds that nighttime sideways flows, not vertical mixing, renew bottom waters.

A large iceberg floats in the sea.
Posted inResearch & Developments

NOAA Halts Maintenance of Key Arctic Data at National Snow and Ice Data Center

by Grace van Deelen 8 May 20258 May 2025

The National Snow and Ice Data Center (NSIDC) may no longer actively maintain or update some of its snow and ice data products after losing support from NOAA’s National Centers for Environmental Information, according to a 6 May announcement.

Posted inEditors' Highlights

二氧化碳恢复后的北极海冰:对北大西洋天气的影响

by Gudrun Magnusdottir 24 April 202524 April 2025

北极海冰恢复不完全导致冬季急流向赤道偏移。由于海洋环流起到了额外的驱动作用,北大西洋急流的偏移尤其不确定。

Graphs and maps from the study.
Posted inEditors' Highlights

Arctic Sea Ice After CO2 Recovery: Implications for North Atlantic Weather

by Gudrun Magnusdottir 4 April 202524 April 2025

Incomplete Arctic sea ice recovery results in equatorward-shifted winter jets. The North Atlantic jet shift is particularly uncertain due to the ocean circulation acting as an additional driver.

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