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greenland

Greenland ice melt may cause dramatic change of northeast coasts

A new study from the National Center for Atmospheric Research (NCAR) has found that Greenland's melting ice may have a greater effect on sea level rise on the northeastern coasts of the U.S. and Canada than previously hypothesized.

"If Greenland's ice melts at moderate to high rates, ocean circulation by 2100 may shift and cause sea levels off the northeast coast of North America to rise by about 12 to 20 inches (about 30 to 50 centimeters) more than in other coastal areas. The research builds on recent reports that have found that sea level rise … Read more

Record heat sweeps Arctic Sea, ice in 2007

SAN FRANCISCO--Warmth may not be an attribute you associate with a place where the sun doesn't shine in the winter and the sea freezes over, but all things are relative. And compared to earlier years, the Arctic was downright sweltering this year.

According to new research presented here at the the American Geophysical Union conference, the Arctic Ocean reached record high temperatures, arctic ice diminished to a record low, and ice melted on Greenland for a record number of days.

"In 2007, we had off-the-charts warming" of the Arctic Sea in the summer, said Mike Steele, an … Read more

Greenland's ice sheet: The annual checkup

Beginning in 1991, every summer NASA has measured the ice sheets of Greenland. Past data indicates significant thinning of ice along the coast. Meanwhile some ice sheets have thickened in Greenland's interior. Overall, there's much less ice on Greenland's surface than there was 100 years ago.

This summer's NASA expedition to Greenland has returned with fresh data. Now the analysis begins. One piece of equipment used is an ice-penetrating radar that can find bedrock up to 2 miles below the ice surface. NASA estimates an average drop of 9 inches in the height of Greenland's … Read more