Much of the southern Greenland Ice Sheet, shown here, will melt irreversibly if we emit about 1000 gigatons of carbon, according to models in a new Geophysical Research Letters study. Credit: NASA GSFC
Once we emit about 1000 gigatons of carbon, much of the massive ice sheet will melt irreversibly. We’ve emitted 500 gigatons so far.
The Greenland Ice Sheet covers 1.7 million square kilometers (660,200 square miles) in the Arctic. If it melts entirely, global sea level would rise about 7 meters (23 feet), but scientists aren’t sure how quickly the ice sheet could melt. Modeling tipping…
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News Source: scitechdaily.com