Search results for Polar Regions

Earth Sciences 1 hour ago

Seasonal change in Antarctic ice sheet movement observed for first time

Some estimates of Antarctica's total contribution to sea-level rise may be over- or underestimated, after researchers detected a previously unknown source of ice loss variability.

Earth Sciences 21 hours ago

Glass microspheres aren't the answer for saving Arctic sea ice

A proposal to cover Arctic sea ice with layers of tiny hollow glass spheres about the thickness of one human hair would actually accelerate sea-ice loss and warm the climate rather than creating thick ice and lowering the ...

Earth Sciences Oct 05, 2022

Researchers find 1 million-year-old marine DNA in Antarctic sediment

A new study led by the University of Tasmania—with the participation of the University of Bonn—discovered the oldest marine DNA in deep-sea sediments of the Scotia Sea north of the Antarctic continent. The material could ...

Earth Sciences Oct 03, 2022

Rainy days on track to double in the Arctic by 2100

Today, more snow than rain falls in the Arctic, but this is expected to reverse by the end of the century. A new study shows the frequency of rainy days in the Arctic could roughly double by 2100.

Astronomy Sep 30, 2022

Emissions of different states are generated in different regions in pulsar magnetosphere

Mode changing is an emission phenomenon where the mean pulse profile abruptly changes between two or sometimes more stable states. In theory, the changes of the current flow in the inner acceleration region or pulsar magnetosphere ...

Earth Sciences Sep 30, 2022

Marine ice sheets were decisive in acceleration of global warming during the last deglaciation

The intensity and rate of melt during the penultimate ice melting was much higher than previously thought, according to a study published in the journal Nature Communications. According to conclusions of the study, in this ...

Earth Sciences Sep 29, 2022

Scientists find link between fast-melting Arctic ice and ocean acidification

An international team of researchers have sounded new alarm bells about the changing chemistry of the western region of the Arctic Ocean after discovering acidity levels increasing three to four times faster than ocean waters ...

Earth Sciences Sep 29, 2022

Observations confirm model predictions of sea-level change from Greenland melt

Rising sea levels from melting glaciers and ice sheets pose an increasing threat to coastal communities worldwide. A new analysis of high-resolution satellite observations takes a major step forward in assessing this risk ...

Ecology Sep 29, 2022

Receding ice leaves Canada's polar bears at rising risk

Sprawled on rocky ground far from sea ice, a lone Canadian polar bear sits under a dazzling sun, his white fur utterly useless as camouflage.

Earth Sciences Sep 29, 2022

Researchers identify mechanism responsible for temperature and salinity 'staircases' in Arctic Ocean

Researchers at the University of Toronto have identified the mechanism responsible for the formation of temperature and salinity "staircases" in the Arctic Ocean, resolving a mystery that has confounded oceanographers and ...

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