Ars Technica – Greenland may have already committed us to almost a foot of sea level rise

Enlarge / View from a survey flight over the Helheim/Kangerlussuaq region of Greenland. (credit: NASA/John Sonntag)
While it’s possible to halt global warming by halting our greenhouse gas emissions, sea level rise is a consequence that keeps on giving. Great ice sheets like Greenland and Antarctica have tremendous inertia—they’re slow to melt but carry on melting even after the thermometer stabilizes. There are many reasons for this, including complex processes beneath glaciers that control their rate of downhill flow. And this complexity makes projecting ice loss over the coming century—and centuries—exceptionally challenging.
In the face of this formidable complexity, a new study led by Jason Box at the Geological Survey of Denmark and Greenland…

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