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News About Ice Ages
August 14, 2017
Extreme melt season leads to decade-long ecosystem changes in Antarctic polar desert
Boulder CO (SPX) Aug 09, 2017
An abnormal season of intense glacial melt in 2002 triggered multiple distinct changes in the physical and biological characteristics of Antarctica's McMurdo Dry Valleys over the ensuing decade, new research led by the University of Colorado Boulder shows. The findings suggest that even abrupt, short-lived climate events can cause long-term alterations in polar regions that unfold over the span of several years and subsequently change the overall trajectory of an ecosystem. The new research ... read more

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Not all glaciers in Antarctica have been affected by climate change
A new study by scientists at Portland State University and the National Snow and Ice Data Center (NSIDC) at the University of Colorado Boulder has found that the effects of climate change, which are ... more
Researchers crack the 'Karakoram anomaly'
A summer 'vortex' of cold air over the Karakoram mountain range is causing the glaciers in the region to grow in spite of global warming, scientists have shown. Publishing their findings in Na ... more
Alaska's North Slope snow-free season is lengthening
On the North Slope of Alaska, snow is melting earlier in the spring and the snow-in date is happening later in the fall, according to a new study by CIRES and NOAA researchers. Atmospheric dynamics ... more
Glaciers may have helped warm Earth
It seems counterintuitive, but over the eons, glaciers may have made Earth warmer, according to a Rice University professor. Mark Torres, an assistant professor of Earth, environmental and pla ... more
N.Y. Air National Guard pilots train for arctic operations with LC-130 ski-planes
The New York Air National Guard's 109th Airlift Wing is training with ski-equipped LC-130 Hercules cargo planes at Raven Camp, Greenland, for landing operations in remote snow and ice bound areas. ... more
Rusting fool's gold in glaciers a sign of increased carbon
Some say the world will end in fire, some in ice. One more reason to hold with those who favor fire: USC scientists have found that rock and soil breakdown in glaciers generates more acidity and rel ... more
Loss of Arctic sea ice impacting Atlantic Ocean water circulation system
Arctic sea ice is not merely a passive responder to the climate changes occurring around the world, according to new research. Scientists at Yale University and the University of Southampton s ... more
Larsen-C update: Open ocean visible between iceberg and ice shelf
New satellite images reveal open ocean between the Larsen-C ice shelf and the massive iceberg that broke away from the Antarctic Peninsula in July. ... more

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Two Decades of Changes in Helheim Glacier
Helheim Glacier is the fastest flowing glacier along the eastern edge of Greenland Ice Sheet and one of the island's largest ocean-terminating rivers of ice. Named after the Vikings' world of the de ... more
Methane-eating microbes may curb gas emissions as Antarctic ice sheets melt
Studies have shown that as ice sheets in Antarctica melt, trapped methane gasses will be released. But new research suggests methane-eating microbes will limit gaseous emissions. ... more
NASA flights gauge summer sea ice melt in the Arctic
Earlier this year Arctic sea ice sank to a record low wintertime extent for the third straight year. Now NASA is flying a set of instruments north of Greenland to observe the impact of the melt seas ... more
A new model yields insights into glaciers' retreats and advances
A University of Alaska Fairbanks study looking at the physics of tidewater glaciers has yielded new insights into what drives their retreat-and-advance cycles and the role that climate plays in thes ... more
Thawing permafrost releases old greenhouse gas
The thawing permafrost soils in the Arctic regions might contribute to the greenhouse effect in two respects: On the one hand rising temperatures lead to higher microbial methane production close to ... more
Microbe study highlights Greenland ice sheet toxicity
The Greenland ice sheet is often seen as a pristine environment, but new research has revealed that may not be the case. A Danish-led study, published in the journal Environmental Research Letters, ... more
US need for four polar icebreakers 'critical,' warns report
The rapid pace of global warming and ice melting at the poles have underscored the "critical" need for the United States to build four new polar icebreaker ships, US officials said Tuesday. ... more
Sentinel satellite captures birth of behemoth iceberg
Over the last few months, a chunk of Antarctica's Larsen C ice shelf has been hanging on precariously as a deep crack cut across the ice. Witnessed by the Copernicus Sentinel-1 mission, a lump of ic ... more

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Massive iceberg
An iceberg about the size of the state of Delaware split off from Antarctica's Larsen C ice shelf sometime between July 10 and July 12. The calving of the massive new iceberg was captured by ... more
Warm Winter Events in Arctic Becoming More Frequent, Lasting Longer
Arctic winter warming events - winter days where temperatures peak above 14 degrees Fahrenheit (minus 10 degrees Celsius) - are a normal part of the climate over the ice-covered Arctic Ocean. But ne ... more
New study shows West Antarctic Ice Sheet loss over the last 11,000 years
Reporting this week (Wednesday 5 July) in the journal Nature, an international team of researchers led by British Antarctic Survey (BAS) explains that wind-driven incursions of warm water forced the ... more
Figuring out how fast Greenland is melting
A new analysis of Greenland's past temperatures will help scientists figure out how fast the island's vast ice sheet is melting, according to a new report from University of Arizona atmospheric scie ... more
Giant iceberg in the making
All eyes are on Antarctica's Larsen C ice shelf as a deep crack continues to cut across the ice, leaving a huge chunk clinging on. When it eventually gives way, one of the largest icebergs on record ... more
Krill hotspot fuels incredible biodiversity in Antarctic region
There are so many Antarctic krill in the Southern Ocean that the combined mass of these tiny aquatic organisms is more than that of the world's 7.5 billion human inhabitants. Scientists have l ... more
Greenland's summer ocean bloom likely fueled by iron
Iron particles catching a ride on glacial meltwater washed out to sea by drifting currents is likely fueling a recently discovered summer algal bloom off the southern coast of Greenland, according t ... more
Huge Antarctic ice block poised to snap off
A chunk of ice bigger than the US state of Delaware is hanging by a thread from the West Antarctic ice shelf, satellite images revealed Wednesday. ... more
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