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News About Ice Ages
July 20, 2016
NASA's Field Campaign Investigates Arctic North American Ecosystems
Washington DC (SPX) Jul 12, 2016
Sampling charred soils in Saskatchewan, outfitting robins with GPS backpacks in Alberta, and measuring the growth rates of trees in northern Alaska - scientists with a decade-long NASA project are in the field this summer to study the impacts of a rapidly warming climate. The Arctic Boreal Vulnerability Experiment, or ABoVE campaign, which started field work in Alaska and northwestern Canada this spring, continues this month with more research into the region's changing forests, carbon cycle, thaw ... read more

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Expanding Antarctic sea ice linked to natural variability
The recent trend of increasing Antarctic sea ice extent - seemingly at odds with climate model projections - can largely be explained by a natural climate fluctuation, according to a new study led b ... more
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Vegetation in Russian Arctic has memory
The permafrost regions in the Arctic are among those areas of the world in which the temperature is rising particularly fast due to climate change. However, biologists are currently observing that t ... more
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Wind-blown Antarctic sea ice helps drive ocean circulation
Antarctic sea ice is constantly on the move as powerful winds blow it away from the coast and out toward the open ocean. A new study shows how that ice migration may be more important for the global ... more
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Super-slow circulation allowed world's oceans to store huge amounts of carbon during last ice age
The way the ocean transported heat, nutrients and carbon dioxide at the peak of the last ice age, about 20,000 years ago, is significantly different than what has previously been suggested, accordin ... more
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Penguin population may be halved by end of century
There will be far fewer penguins in Antarctica by the end of the century as a result of rising temperatures, according to a recent study. ... more
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Siberian larch forests are still linked to the ice age
The Siberian permafrost regions include those areas of the Earth, which heat up very quickly in the course of climate change. Nevertheless, biologists are currently observing only a minimal response ... more
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New technique settles old debate on highest peaks in US Arctic
Finding out which is the highest mountain in the US Arctic may be the last thing on your mind, unless you are an explorer who skis from the tallest peaks around the globe. Ski mountaineer Kit DesLau ... more
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As Alaska warms, methane emissions appear stable
Analysis of nearly three decades of air samples from Alaska's North Slope shows little change in long-term methane emissions despite significant Arctic warming over that time period, according to ne ... more
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Permafrost thawing below shallow Arctic lakes
New research shows permafrost below shallow Arctic lakes is thawing as a result of changing winter climate. Warmer winters combined with an increase in snowfall during the last 30 years have limited ... more
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Ancient DNA shows perfect storm felled Ice Age giants
Giant Ice Age species including elephant-sized sloths and powerful sabre-toothed cats that once roamed the windswept plains of Patagonia, southern South America, were finally felled by a perfect sto ... more
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Huge ancient river basin explains location of the world's fastest flowing glacier
An ancient basin hidden beneath the Greenland ice sheet, discovered by researchers at the University of Bristol, may help explain the location, size and velocity of Jakobshavn Isbrae, Greenland's fa ... more
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Russia unveils 'world's biggest' nuclear icebreaker
Russia on Thursday floated out a new nuclear-powered icebreaker, said to be the world's biggest and most powerful, to be used for hauling liquefied natural gas from its Arctic terminal. ... more
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New research reveals secrets of former subglacial lakes in North America
Researchers at the University of Sheffield have provided a unique glimpse into one of the least understood environments on Earth by revealing for the first time former subglacial lakes and their dra ... more
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FAA asks US pilots to be considerate of walruses
US pilots need to beware of flying too low and scaring walruses forced onto land in northern Alaska by global warming, the Federal Aviation Administration said Tuesday. ... more
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Carbon dioxide biggest player in thawing permafrost
Carbon dioxide emissions from dry and oxygen-rich environments will likely strengthen the climate forcing impact of thawing permafrost on top of methane release from oxygen-poor wetlands in the Arct ... more
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Research shows Antarctic lakes are a repository for ancient soot
Remote lakes in a perpetually ice-free area of Antarctica show not only the chemical signature of ancient wildfires, but also some much more recent evidence of fossil-fuel combustion, according to N ... more
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Russia unveils new navy icebreaker in Arctic military focus
Russia on Friday floated a new icebreaker for its navy, the first in about 45 years, in a further sign of Moscow's growing military focus on the Arctic. ... more
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Study finds link between 2015 melting Greenland ice, faster Arctic warming
A new study provides the first evidence that links melting ice in Greenland to a phenomenon known as Arctic amplification - faster warming of the Arctic compared to the rest of the Northern Hemisphe ... more
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Greenland's 2015 melt records consistent with 'Arctic amplification'
Following record-high temperatures and melting records that affected northwest Greenland in summer 2015, a new study provides the first evidence linking melting in Greenland to the anticipated effec ... more
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NASA's Operation IceBridge Completes 2016 Arctic Spring Campaign
Operation IceBridge, NASA's airborne survey of polar ice, ended its eighth spring Arctic campaign on May 21. During their five weeks of operations, mission scientists carried out six research flight ... more
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NASA studies details of a greening Arctic
The northern reaches of North America are getting greener, according to a NASA study that provides the most detailed look yet at plant life across Alaska and Canada. In a changing climate, almost a ... more
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What Satellites Show About Arctic Climate Change
It is not news that Earth has been warming rapidly over the last 100 years as greenhouse gases accumulate in the atmosphere. But not all warming has been happening equally rapidly everywhere. Temper ... more
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USGS assesses carbon potential of Alaska lands
In comparison to the lower 48 states, Alaskan forests, wetlands and permafrost contain larger stores of carbon, according to the first-of-its-kind assessment recently completed by the U.S. Geologica ... more
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Antarctic coastline images reveal 4 decades of ice loss to ocean
Part of Antarctica has been losing ice to the ocean for far longer than had been expected, satellite pictures reveal. A study of images along 2000km of West Antarctica's coastline has shown the loss ... more
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