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Tag: icefree

Baffin Island landscapes ice-free for first time in 40,000 years

Baffin Island landscapes ice-free for first time in 40,000 years

Science
Jan. 25 (UPI) -- Rapidly retreating Arctic glaciers have revealed ancient moss and lichens, ice-free for the first in 40,000 years, according to new analysis by researchers at the University of Colorado, Boulder. The survey of newly thawed plants, contextualized by temperature records gleaned from Greenland ice cores, suggests the Arctic is experiencing summer highs warmer than any century in 115,000 years. "The Arctic is currently warming two to three times faster than the rest of the globe, so naturally, glaciers and ice caps are going to react faster," Simon Pendleton, doctoral researcher at Boulder's Institute of Arctic and Alpine Research, said in a news release. Pendleton and his colleagues radiocarbon dated plants found near the edges of 30 ice caps on Baffin Island, the fifth-larg...
Small ice-free oasis helped Arctic marine life survive last ice age

Small ice-free oasis helped Arctic marine life survive last ice age

Science
Sept. 28 (UPI) -- New analysis suggests a small corridor between Norway and the British Isles remained ice-free during the last ice age, offering an oasis of sorts for marine life. "When we were looking for evidence of biological life in sediments at the bottom of the ocean, we found that between the sea ice covered oceans, and the ice sheets on land, there must have been a narrow ice-free corridor," Jochen Knies, a research scientist at the Arctic University of Norway and Geological Survey of Norway, said in a news release. Last week, Arctic sea ice shrank to its lowest point this year, the sixth smallest summertime minimum extent in modern history. But during the last ice age, Arctic sea ice was much more expansive, spreading across almost all of the North Sea. But sediment cores sugges...