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Sea ice


Ice floes near Svalbard, Norway. Credit: Naturfoto-Online / Alamy Stock Photo.

Arctic sea ice winter peak in 2022 is 10th lowest on record

Arctic sea ice has reached its maximum extent for the year, peaking at 14.88m square kilometres (km2) on 25 February. It is the 10th smallest winter ... Read More

Sea ice | Mar 22. 2022.
A wildfire burns through forests at the Summit Trail Fire in the Colville Reservation, Washington

Melting Arctic sea ice linked to ‘worsening fire hazards’ in western US

Arctic sea ice melt has driven an increase in “fire-favourable weather” across the western US over the past four decades, according to new resear... Read More

Wildfires | Nov 25. 2021.
Arctic sea ice floe in Svalbard

Arctic sea ice summer minimum in 2021 is ‘12th lowest’ on record

Arctic sea ice has reached its annual minimum for 2021, clocking in at the 12th lowest on record, according to provisional data from the US National ... Read More

Sea ice | Sep 22. 2021.
Small island in the Ross Sea, Antarctica, with pack ice in the foreground

Guest post: Deciphering the rise and fall of Antarctic sea ice extent

The sharp decline in Arctic sea ice over recent decades has become one of the most enduring images of the Earth’s warming climate. Yet, at the same... Read More

Guest posts | Jun 29. 2021.
Sea ice in Svalbard

Arctic sea ice winter peak in 2021 is joint-seventh lowest on record

Arctic sea ice has reached its maximum extent for the year, peaking at 14.77m square kilometres (km2) on 21 March. This is the joint-seventh smallest... Read More

Sea ice | Mar 31. 2021.

Arctic sea ice shrinks to second-lowest summer minimum on record

Arctic sea ice has reached its second lowest level on record, data shows. Each year, Arctic sea ice goes through a seasonal cycle, growing in area... Read More

Sea ice | Sep 21. 2020.
Visualisation using NASA's MERRA dataset to model the jet stream over North America, between June and July, 1988. Credit: Science History Images / Alamy Stock Photo. T81PF2

Jet stream: Is climate change causing more ‘blocking’ weather events?

The past few months have seen some remarkable weather, from the UK’s sunniest spring on record to Siberia’s dramatic heatwave and “zombie wildf... Read More

Extreme weather | Jun 12. 2020.
An argo float measures ocean temperatures. Credit: Argo program, Germany/Ifremer.

Guest post: Could the Atlantic Overturning Circulation ‘shut down’?

Generally, we think of climate change as a gradual process: the more greenhouse gases that humans emit, the more the climate will change. But are the... Read More

Guest posts | Feb 11. 2020.
Adult black-legged kittiwakes (Rissa tridactyla), Svalbard Archipelago, Barents Sea, Norway. Credit: robertharding / Alamy Stock Photo

Explainer: How 'Atlantification' is making the Arctic Ocean saltier and warmer

In the seas above Scandinavia, there is a point where the Arctic Ocean collides with the warmer, saltier waters of the Atlantic. This Arctic regio... Read More

Oceans | Jan 16. 2020.

Interactive: When will the Arctic see its first ice-free summer?

Since satellites first began monitoring the Arctic in 1979, the average area covered by sea ice has shrunk by at least 40%. The average thicknes... Read More

Features | Dec 12. 2019.

Inside MOSAiC: How a year-long Arctic expedition is helping climate science

@media screen and (max-width: 425px) { figure.wp-block-pullquote.alignright{ display:none; } } The world’s largest polar research expeditio... Read More

Features | Nov 18. 2019.
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