Taxonomy term

sea ice

Radium levels suggest Arctic Ocean chemistry is changing

Rising temperatures have already caused changes in the Arctic environment, like diminishing sea ice and thawing permafrost. Now, it appears that sea-ice loss could be throwing Arctic Ocean chemistry out of whack.

24 Apr 2018

Disrupting the deep: Ocean warming reaches the abyss

Since the 1970s, just 7 percent of the heat associated with humancaused warming has melted snow and ice or warmed the land and atmosphere. The other 93 percent was absorbed by the oceans, where temperatures are now increasing at nearly all latitudes and depths, threatening to fundamentally alter our planet by disrupting ocean circulation. 
20 Mar 2018

Driftwood reveals ancient Arctic currents and sea-ice levels

Arctic driftwood up to 12,000 years old is giving scientists a better understanding of how ocean currents and sea ice in the far north have changed through the Holocene. In a new study, published in the Journal of Geophysical Research: Oceans, scientists at the University of Oxford in England studied more than 900 pieces of driftwood collected from Arctic shorelines since the 1950s to investigate how shifting Arctic Ocean currents help melt or fortify sea ice.

28 Dec 2017

Comment: Arctic warming and midlatitude weather: Is there a connection?

Over the last few decades, the Arctic has warmed more than the rest of the planet, but is this Arctic amplification influencing weather patterns in the middle latitudes?
04 Dec 2017

Ice (Re)Cap: November 2017

From Antarctica to the Arctic; from polar caps, permafrost and glaciers to ocean-rafted sea ice; and from burly bears to cold-loving microbes, fascinating science is found in every nook and crevasse of Earth’s cryosphere, and new findings are announced often. Here are a few of the latest updates.

 
14 Nov 2017

Comment: Crazy times in the Arctic

As atmospheric greenhouse gas concentrations increase, the resulting warming and its effects are most pronounced in the Arctic, where last year’s sea-ice changes and temperature fluctuations are surprising even seasoned experts. 
 
23 Jan 2017

Wintering in the high Arctic reveals surprising results

A summary of the results of the winter 2015 Norwegian Young Sea ICE Expedition (N-ICE), during which the Lance, a Norwegian research vessel, drifted for six months with the shrinking Arctic sea ice reaching as far as 83 degrees north. More than 70 scientists from 10 countries participated in the second-only winter field survey of the Arctic ice pack, and what they found surprised them.

14 Dec 2016

Ice (Re)Cap: December 2016

From Antarctica to the Arctic; from polar caps, permafrost and glaciers to ocean-rafted sea ice; and from burly bears to cold-loving microbes, fascinating science is found in every nook and crevasse of Earth’s cryosphere, and new findings are announced often. Here are a few of the latest updates.

09 Dec 2016

Ice (Re)Cap: December 2015

From Antarctica to the Arctic; from polar caps, permafrost and glaciers to ocean-rafted sea ice; and from burly bears to cold-loving microbes, fascinating science is found in every nook and crevasse of Earth’s cryosphere, and new findings are announced often. Here are a few of the latest updates.
 
15 Dec 2015

Arctic climate change marked by warmer, wetter conditions

At least since satellite observations began four decades ago, climbing temperatures have chipped away at Arctic sea ice causing earlier spring melting and later autumn freezing. Because ice reflects more sunlight than water does, shrinking sea-ice cover means that Arctic waters soak up more solar energy, which affects climate both regionally and globally. Now, a new study has documented how Arctic warming leads to wetter air and increased cloud cover, particularly during autumn and winter, which spurs even more warming in a self-reinforcing cycle.

28 Aug 2015

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