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Ice Sheet

Greenland: Jakobshavn New World Speed Record, Hundreds of Deeply Incised Underice Valleys Beneath Outlet Glaciers

By Glaciers, Greenland, ice sheets, submarine channel, underice

The North Atlantic is warming and  Greenland’s ice loss has quadrupled in the last 20 years. Warm water is getting under the floating edges of outlet glaciers and causing thinning which in-turn causes the glaciers to speed up. New research has identified another and  possibly new dimension to the increase of outlet glacier flow that…

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Unprecedented in the Arctic: Warmer Now Than 44,000 to 120,000 Years Ago

By Arctic, Temperature, Uncategorized

A study in Geophysical Research Letters has found moss beneath a recently melted glacier on Baffin Island that dates back 44,000 to 120,000 years using radiocarbon-14 dating. This technique uses the radioactive decay rate of carbon-14, a rare but predictable version of a normal carbon atom, to date things that were once alive. The radioactive…

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Antarctic Ice Report from the USGS – authors say "widely regarded as among the most profound and unambiguous examples of the effects of global warming yet seen on the planet"

By Antarctica

Antarctica is shrinking and the rate of melt and ice discharge is accelerating. In the last 20 years an area of ice almost the size of Alaska has been lost. Every ice front on the southern section of the peninsula has been retreating from 1947 to 2009, with the most dramatic changes since 1990.This U.S….

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