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sea ice

Sea ice in Alaska in 1982 compared to 2018
Posted inNews

Arctic Report Card Founder Discusses the Fate of the Pole

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 11 February 20212 September 2022

Researcher Jackie Richter-Menge has reported on the status of the melting Arctic for the past 15 years. Her observations tell a story of “mind-blowing change.”

Scientists stand in a tend with the ROV
Posted inNews

Beast of the Central Arctic

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 11 December 202028 July 2022

Feast your eyes on Beast, the first remotely operated vehicle to brave the Arctic for 1 year.

A polar bear sits on its haunches on sea ice in the east Greenland Sea.
Posted inNews

Polar Bears to Vanish from Most of the Arctic This Century

Cheryl Katz, Science Writer by Cheryl Katz 29 October 202029 April 2022

A “timelines of risk” model shows when and where population collapse begins as sea ice wanes in our warming future.

Satellite image of the Himalayas
Posted inNews

Pollution over the Tibetan Plateau Linked to Sea Ice Loss in the Arctic

by Michael Allen 7 October 202028 February 2023

New research suggests an atmospheric connection between Arctic sea ice melt and anthropogenic aerosol pollution over the Tibetan Plateau.

Sea ice covers Canada's Hudson Bay. Artificial sea ice restoration could alter a complex web of interactions.
Posted inOpinions

Implications of Sea Ice Management for Arctic Biogeochemistry

by L. Miller, F. Fripiat, S. Moreau, D. Nomura, J. Stefels, N. Steiner, L. Tedesco and M. Vancoppenolle 30 September 202027 September 2022

Geoengineering strategies to slow sea ice melting would affect not only Earth’s climate but also the biology and chemistry of the oceans, atmosphere, and ice.

Satellite image of a phytoplankton bloom in the Barents Sea
Posted inResearch Spotlights

Most of the Arctic’s Microscopic Algae Are Chilling Under Ice

Rachel Fritts, Science Writer by Rachel Fritts 21 September 20208 February 2023

New research reveals that tiny single-celled organisms in the Arctic Ocean are growing more numerous as climate change thins the ice.

Charts showing cumulative future CO2 emissions (left), surface temperature anomaly (center), and year when sea-ice area drops below 1 million km2 (right) under different CMIP6 emissions scenarios
Posted inEditors' Highlights

Characteristics of Polar Sea Ice in Latest Climate Models

by Gudrun Magnusdottir 21 August 202022 April 2022

Sea ice area in CMIP6 is similar to previous versions while its sensitivity to external forcing is subtly different and closer to observations, but still not in step with global surface temperature.

Maps showing observed (left) and simulated (right) subsurface ocean heat content changes in the Southern Ocean
Posted inEditors' Highlights

Explaining Cold and Fresh Southern Polar Ocean Surface Waters

by P. Rizzoli 6 May 202017 August 2022

Global climate models do not reproduce observed trends of the Southern polar ocean surface, but an increase in wind-transported sea ice that melts and inhibits mixing may account for the disparity.

Iceberg floating in the Arctic Ocean
Posted inNews

El Cambio Climático Está Intensificando las Corrientes Oceánicas del Ártico

Hannah Thomasy, Science Writer by Hannah Thomasy 16 April 202016 July 2025

El derretimiento del hielo significa que los fuertes vientos del Ártico están creando corrientes más energéticas en el giro de Beaufort.

Sea ice in the Beaufort Sea in 2018
Posted inResearch Spotlights

An Element of Randomness in Modeling Arctic Ice Cover

Sarah Stanley, Science Writer by Sarah Stanley 14 April 202018 October 2022

Incorporating random variation of temperature, humidity, and wind offers a computationally cheap alternative to improving resolution in an Earth system model when predicting when Arctic sea ice will disappear.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

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