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8 May 2017

Bands of extra-tough ice slow down cracks in Antarctica’s Larsen C ice shelf

Bands of extra-tough ice slow down cracks in Antarctica’s Larsen C ice shelf

The stability of the Antarctic Peninsula’s largest ice shelf may depend upon stripes of extremely strong ice running down its spine, a new study finds.

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26 April 2017

Sea level rising faster now than during 1990s, new study shows

Sea level rising faster now than during 1990s, new study shows

Global mean sea level is rising 25 percent faster now than it did during the late 20th century largely due to increased melting of the Greenland Ice Sheet, a new study shows. Satellites first started measuring sea level rise in 1993. The new study revisits how well these measurements agree with independently observed changes in the various components contributing to sea level rise.

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13 April 2017

Researchers unravel drivers of large iceberg movement

Researchers unravel drivers of large iceberg movement

Researchers have succeeded in modeling how Antarctic icebergs drift through the Southern Ocean, and in identifying the physical factors behind their movement and their melting. Which factors are most important tends to depend on the size of the iceberg in question

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7 April 2017

Scientists uncover isotopic fingerprint of nitrous oxide emissions from Arctic tundra

Scientists uncover isotopic fingerprint of nitrous oxide emissions from Arctic tundra

A new study presents, for the first time, the isotopic fingerprint of nitrous oxide produced by Arctic soils. The finding opens new avenues for predicting future trends in atmospheric nitrous oxide as well as in identifying climate change mitigation actions in the Arctic, a region that is particularly sensitive to climate change.

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2 March 2017

Study improves forecasts of summer Arctic sea ice

Study improves forecasts of summer Arctic sea ice

Each year, as sea ice starts to melt in the spring following its maximum wintertime extent, scientists still struggle to estimate exactly how much ice they expect will disappear through the melt season. Now, a new NASA forecasting model based on satellite measurements is allowing researchers to make better estimates.

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1 March 2017

WMO verifies highest temperatures for Antarctic Region

WMO verifies highest temperatures for Antarctic Region

A World Meteorological Organization (WMO) committee of experts has announced new records for the highest temperatures recorded in the Antarctic Region as part of continuing efforts to expand a database of extreme weather and climate conditions throughout the world.

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1 February 2017

Coal mine dust lowers spectral reflectance of Arctic snow by up to 84 percent, new study finds

Coal mine dust lowers spectral reflectance of Arctic snow by up to 84 percent, new study finds

Dust released by an active coal mine in Svalbard, Norway reduced the spectral reflectance of nearby snow and ice by up to 84 percent, according to new research.

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24 January 2017

Arctic melt ponds form when meltwater clogs ice pores

Arctic melt ponds form when meltwater clogs ice pores

When spring comes to the Arctic, the breakup of the cold winter ice sheets starts at the surface with the formation of melt ponds. These pools of melted snow and ice darken the surface of the ice, increasing the amount of solar energy the ice sheet absorbs and accelerating melt. Now, researchers describe in a new study how these melt ponds form, solving a paradoxical mystery of how a pool of water actually sits atop highly porous ice.

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13 January 2017

Changing atmospheric conditions may contribute to stronger ocean wave activity on the Antarctic Peninsula

Changing atmospheric conditions may contribute to stronger ocean wave activity on the Antarctic Peninsula

A new study provides important details on the extent of sea ice, which can protect ice shelves from the impacts of ocean storms, in the Antarctic Peninsula.

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14 September 2016

The difficulty of predicting an ice-free Arctic

The difficulty of predicting an ice-free Arctic

The Arctic is nearing its seasonal sea ice minimum this month, but predicting exactly when the region will see its first ice-free summer may be more difficult than previously believed, according to new research.

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