“… it is likely that we can expect both the Greenland ice sheet’s contribution and the pace of sea level rise to rapidly accelerate.
As the great ice sheets sped toward the oceans at the end of the last ice age, the pace of sea level rise hit as high as 10 feet each century. With the pace of human warming now about 30 times faster than at the last ice age’s fall, we may well eventually witness something even outside this difficult to understand context.”
(Leading edge of the accelerating Zachariae Ice Stream meets the warming and increasingly ice free ocean on August 20 of 2013. Satellite image source: Lance-Modis.)
Greenland — a vast store of ice three kilometers tall at its center and the final remnant of the Northern Hemisphere’s great glaciers of the last ice age has now begun what is likely an unstoppable rush to the sea. For according to a new report in Nature Climate Change, the last stable region of glacial ice along the Greenland coastline is now accelerating through one of the ice sheet’s largest and deepest outlets — the Zachariae Ice Stream.
Zachariae, the last domino to fall
The Zachariae Ice Stream is a vast river of ice in the northeast section of Greenland. It terminates in two outlets through a broad and deep ice-choked bay facing the Fram Strait.
Throughout the 1990s and into the…
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