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Arctic Ocean

A ship sails through sea ice.
Posted inNews

Arctic Shipping Routes Are Feeling the Heat

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 6 July 202218 October 2022

Climate science and the global shipping industry collide in an ice-poor Arctic.

Scientists collect samples from algal mats dotting the surface of sea ice in the Arctic.
Posted inNews

Algal Mats May Be a Key to the Arctic Food Web

by Fanni Daniella Szakal 27 June 20226 January 2023

Melt ponds in sea ice have thriving algal communities with startlingly high levels of photosynthetic activity.

Autonomous underwater vehicle being loaded onto a ship
Posted inNews

Groundwater Flow May Contribute to Submarine Permafrost Thaw

by Jack Lee 18 May 202231 May 2022

New, detailed surveys from the Beaufort Sea reveal a seafloor depression the size of a city block associated with permafrost thaw and likely influenced by the movement of groundwater below.

Figures from the paper, showing simulated Ural blocking event.
Posted inEditors' Highlights

Arctic Sea Ice is Crucial for Forecasting Ural Blocking

by Yimin Liu 12 May 202221 December 2022

By solving the nonlinear optimization problem, sea ice concentration in Greenland, Barents and Okhotsk Seas is found crucial for prediction of strong and long-lasting Ural blocking formation.

Sea ice in the Arctic Ocean.
Posted inEditors' Vox

Tracking Heat Gains and Losses in the Nordic Seas

by Lars H. Smedsrud 31 January 20221 February 2022

The Nordic Seas experience influxes of warm water and losses of heat to the atmosphere with knock-on effects on sea ice, glacier retreat, and carbon dioxide uptake.

A GEOTRACES research vessel in the Arctic Ocean
Posted inResearch Spotlights

Diurnal Oxidation for Manganese Minerals in the Arctic Ocean

by Morgan Rehnberg 13 January 202213 January 2022

The relative abundance of different oxidation states for this important micronutrient varies on the basis of how much available sunlight there is.

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.

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.

Research vessel in the Arctic Ocean
Posted inNews

The Arctic Ocean May Not Be a Reliable Carbon Sink

Hannah Thomasy, Science Writer by Hannah Thomasy 7 April 202025 January 2023

The rapid changes happening in the Arctic Ocean, including increasing freshwater input, could dramatically affect its ability to store carbon.

Satellite view of the Lena River delta in June 2019
Posted inResearch Spotlights

River Deltas at the Top of the World

Elizabeth Thompson by Elizabeth Thompson 20 March 202019 September 2023

The water that filters through river deltas has a large effect on the Arctic Ocean. A new study explores factors that shape Arctic river deltas and how delta form in turn changes water flow.

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A view of a bridge, with the New Orleans skyline visible in the distance between the bridge and the water. A purple tint, a teal curved line representing a river, and the text “#AGU25 coverage from Eos” overlie the photo.

Features from AGU Publications

Research Spotlights

What Could Happen to the Ocean’s Carbon If AMOC Collapses

6 January 20266 January 2026
Editors' Highlights

Frictional Properties of the Nankai Accretionary Prism

11 December 20259 December 2025
Editors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

3 December 20253 December 2025
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