How Fast is Greenland's Ice Melting?
And what does it mean for Hampton Beach?
Using mean sea level in 1992 as a starting point, New Hampshire sea levels are expected to rise between 0.6 and 2.0 feet by 2050 and between 1.6 and 6.6 feet by 2100. That's one finding of a report released earlier this week by the New Hampshire Coastal Risk and Hazards Commission.
How do scientists make that estimate? Part of the answer is being written right now, in the Upper Valley, by Dartmouth professors and their graduate students.
In the spring of 2016, Erich Osterberg, a professor of earth sciences, led a scientific expedition to Greenland. For five weeks, they traveled across the ice sheet taking measurements and obtaining ice cores that were sent to Dartmouth for further study.
This video shows how the team drilled ice core samples, what it looked for back in the lab and how this information is used to predict how fast Greenland’s ice is melting. Their findings will help society and government agencies, such as the New Hampshire Coastal Risk and Hazards Commission, better understand—and prepare for—climate change.