25 Jul 2012:
Entire Greenland Ice Sheet
Experiences Significant Surface Melting
New NASA satellite images show that the surface of virtually the entire ice sheet covering Greenland experienced melting in mid-July
, a phenomenon not seen in three decades of satellite observations.
Temperatures rose so high that ice on the Greenland’s highest peak, Summit Station, turned to slush, NASA said. Until the severe melting earlier this month, the greatest extent of surface melting observed by satellites over the past three decades covered about 55 percent of the ice sheet; on July 12, 97 percent of the ice sheet experienced surface melting. Ice cores from Greenland show that such melting events have occurred roughly every 150 years, but Greenland’s ice sheet has been experiencing rapid melting in the past decade and if another major melting event occurred within the next 10 years it could disrupt the stability of the ice sheet
, said Thomas Mote, a climatologist at the University of Georgia. “When we see melt in places that we haven’t seen before, at least in a long period of time, it makes you sit up and ask what’s happening,” NASA scientist Waleed Abdalati told the BBC
. “It’s a big signal, the meaning of which we’re going to sort out for years to come.”
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
The 2015 Yale e360 Video Contest winner documents a Northeastern town's bitter battle over a wind farm. Watch the video.
A 2015 Yale e360 Video Contest winner captures stunning images of wild salmon runs in Alaska. Watch the video.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
video goes onto the front lines with Colorado firefighters confronting deadly blazes fueled by a hotter, drier climate. Watch the video.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.