May 5, 2012

SandBoxBlogs: Summit County Citizens Voice "Climate: Greenland’s glaciers going, going … not so fast!"

Bob Berwyn:
"SUMMIT COUNTY — Greenland’s glaciers have sped up by about 30 percent in the past 10 years, a significant change, but not as much as estimated in other previous climate-change scenarios.

The documentation from 200 outlet glaciers suggests that Greenland’s contribution to rising sea level in the 21st century might be significantly less than the upper limits some scientists thought possible.

Reporting in the May 4 issue of Science, the scientists said they saw no clear indication  the glaciers will stop gaining speed during the rest of the century. By 2100 they could reach or exceed the scenario in which they contribute four inches to sea level rise.

“So far, on average we’re seeing about a 30 percent speedup in 10 years,” said Twila Moon, a University of Washington doctoral student in Earth and space sciences and lead author of the paper.

The faster the glaciers move, the more ice and meltwater they release into the ocean. Some earlier studies suggested the Greenland glaciers would double their velocity between 2000 and 2010 and then stabilize at the higher speed. Another scenario even suggested the speeds would increase tenfold and then stabilize...." (Read more?  Click title)

"Unapologetically pursuing and tracking patterns within the news others make since 2010."

No comments: