Mmastodon EnvironmentEnvironment first seen 3 h ago, last 38 min ago, peak #1

Greenland Ice Sheet and permafrost thaw raise climate risk questions

Original: The Greenland Ice Sheet: 20% of the entire dataset abrupt thaw of permafrost in boreal forests just below the Arctic: 0.

New figures circulating among climate observers put the Greenland Ice Sheet at 20% of a major assessment dataset, with abrupt permafrost thaw in boreal forests just below the Arctic at 0.7% and the North Atlantic subpolar gyre at 3.1%. Commenters note that potentially consequential climate risks tied to these systems remain hard to assess because relatively little scientific research covers them.

Why now: Fresh statistics on ice sheet loss, permafrost thaw and ocean circulation are fuelling debate about under-assessed climate tipping points.

Greenland Ice SheetNorth Atlantic subpolar gyreArctic

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Evidence

• The Greenland Ice Sheet: 20% of the entire dataset abrupt thaw of permafrost in boreal forests just below the Arctic: 0.7%. The North Atlantic subpolar gyre: 3.1% which potentially consequential climate risks remain difficult to assess because comparatively little scientific… · Snoro · 9

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