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sea ice

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.

Posted inEditors' Highlights

Arctic Coast Erosion Linked to Large-Scale Climate Variability

by J. Sprintall 10 April 202015 November 2021

Changes in rates of Arctic coastal erosion detected from multi-decadal measurements are attributed to the shorter duration in the winter sea ice coverage and large-scale changes in the wind patterns.

Iceberg floating in the Arctic Ocean
Posted inNews

Climate Change Is Intensifying Arctic Ocean Currents

Hannah Thomasy, Science Writer by Hannah Thomasy 3 March 202020 July 2022

Melting ice means that strong Arctic winds create more energetic currents in the Beaufort Gyre.

Aerial view of buildings on a narrow spit of land
Posted inNews

Helping Alaskan Communities Facing Climate Risks

by Randy Showstack 7 February 202029 April 2022

Scientists examine how best to use science to help communities respond to rapid climate change in the Arctic.

The drillship Vidar Viking sits amid Arctic sea ice during the International Ocean Discovery Program’s Arctic Coring Expedition in 2004.
Posted inResearch Spotlights

Reconstructing 150 Million Years of Arctic Ocean Climate

by David Shultz 18 December 201926 January 2023

A new summary of past Arctic climate conditions gives insight into anthropogenic influences on today’s climate and on the need for future drilling studies to further improve our understanding of the past.

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