“On any given day, sea ice cover in the oceans of the polar regions is about the size of the U.S.,” Thorsten Markus reminds us. He’s a research scientist at NASA’s Goddard Space Flight Center. “Far-flung locations like the Arctic and Antarctic actually impact our temperature and climate where we live and work on a […]
Tag: cryosphere
A forest revealed under glacial ice
Laura Nielsen for Frontier Scientists – Alaska’s Mendenhall Glacier is shrinking, and its retreating ice has bared the remains of an ancient forest. Preserved stumps and trunks, many still rooted and even bearing bark, sit in a gravelly mix of stone churned up by the glacier. The trees are being exposed to open air for […]
A continent of ice on the wane
Ned Rozell for UAFGI – Despite taking up as much space as Australia, the blue-white puzzle of ice floating on the Arctic Ocean is an abstraction to the billions who have never seen it. But continued shrinkage of sea ice is changing life for many living things. A few Alaska scientists added their observations to […]
Ice restrains the floodgates
Laura Nielsen for Frontier Scientists – There’s a new Titanic under construction: a grandiose ocean liner, maiden voyage set for 2016. The Australian billionaire undertaking the project intends Titanic II to be a near-perfect replica of the original RMS Titanic, the ill-fated steamship which sank in 1912 after striking an iceberg. The disaster claimed over 1,500 lives. […]
A Portal to Toolik Field Station
Laura Nielsen for FrontierScientists We know that the Arctic holds unique climate conditions and a complex carbon balance. Tundra fires and thawing permafrost release carbon dioxide into the atmosphere, while unique ocean currents and cold waters prompt higher levels of ocean acidification. Methane emerges from sea and soil. The Arctic sea ice cover shrinks to increasingly startling extents. Plant life […]
Geologic methane seeping from thawing cryosphere
Geologic methane is seeping through the edges of thawing permafrost and receding glaciers in Alaska and Greenland, according to a study recently published in the journal Nature Geoscience. University of Alaska Fairbanks researcher Katey Walter Anthony led the study, which, for the first time, documents the widespread occurrence of these terrestrial sources of geologic methane […]
Flowing tongues of rock, ice and dirt
Ned Rozell for UAFGI – A few years ago, Ronald Daanen was driving north of Coldfoot on the Dalton Highway, looking for drunken trees. He pulled over when he saw some tipsy spruce on a hillside. The University of Alaska Fairbanks scientist thought the tilted trees would be a classic sign of thawing permafrost, ground […]