The emergence of modern sea ice in the Arctic Ocean, 2.6 million years ago
"We have not seen an ice free period in the Arctic Ocean for 2,6 million years. However, we may see it in our lifetime," says marine geologist Jochen Knies. In an international collaborative project, Knies ...
Tides stir up deep Atlantic heat in the Arctic Ocean
Researchers have identified how warm Atlantic water that is flowing deep into the Arctic Ocean is mixing with colder waters above to contribute to sea-ice loss in the Arctic. The results, published this week ...
Underwater 'tree rings': Calcite crusts of arctic algae record 650 years of sea ice change
Almost 650 years of annual change in sea-ice cover can been seen in the calcite crust growth layers of seafloor algae, says a new study from the University of Toronto Mississauga (UTM).
Cost of Arctic methane release could be 'size of global economy' warn experts
Researchers have warned of an "economic time-bomb" in the Arctic, following a ground-breaking analysis of the likely cost of methane emissions in the region.
Mercury and ozone depletion events in the Arctic linked to sea-ice dynamics
This week a new study published in Nature and co-authored by Drs. Chris Moore and Daniel Obrist of Nevada's Desert Research Institute establishes, for the first time, a link between Arctic sea ice dynami ...
Caribou may be indirectly affected by sea-ice loss in the Arctic
Melting sea ice in the Arctic may be leading, indirectly, to fewer caribou calf births and higher calf mortality in Greenland, according to scientists at Penn State University. Eric Post, a Penn State University ...
Old permafrost carbon released
Using indicator molecules, a team of researchers headed by ETH Zurich demonstrates that carbon stored in the Arctic permafrost is being mobilised in Eurasian river basins.
Noctilucent clouds get an early start
Every summer, something strange and wonderful happens high above the north pole. Ice crystals begin to cling to the smoky remains of meteors, forming electric-blue clouds with tendrils that ripple hypnotically ...
Storing carbon in the Arctic
For the past three decades, as the climate has warmed, the massive plates of sea ice in the Arctic Ocean have shrunk: In 2007, scientists observed nearly 50 percent less summer ice than had been seen in 1980.
An icebreaker gets stuck in the ice, photos are used to mislead
As the saying goes, a picture is worth a thousand words, and by now you might have seen dramatic images of passengers on stranded icebreaker Akademik Shokalskiy being rescued by helicopter last Friday after becoming lodged in Antarctica sea ice on Christmas Eve. ...
New data confirms Arctic ice trends: Sea ice being lost at a rate of five days per decade
(Phys.org) —The ice-free season across the Arctic is getting longer by five days per decade, according to new research from a team including Prof Julienne Stroeve (UCL Earth Sciences). New analysis of satellite ...
Has the puzzle of rapid climate change in the last ice age been solved?
Over the past one hundred thousand years cold temperatures largely prevailed over the planet in what is known as the last ice age. However, the cold period was repeatedly interrupted by much warmer climate ...
Leading scientists express rising concern about 'microplastics' in the ocean
Microplastics – microscopic particles of plastic debris – are of increasing concern because of their widespread presence in the oceans and the potential physical and toxicological risks they pose to organisms.
Submarine data used to investigate turbulence beneath Arctic ice
Using recently released Royal Navy submarine data, researchers at the National Oceanography Centre (NOC) have investigated the nature of turbulence in the ocean beneath the Arctic sea-ice.