Environment Forum
Global environmental challenges
Greenland ice melt sets a record — and could set the stage for sea level rise
Greenland’s ice sheet melted at a record rate in 2010, and this could be a major contributor to sea level rise in coming decades.
The ice in Greenland melted so much last year that it formed rivers and lakes on top of the vast series of glaciers that covers much of the big Arctic island, with waterfalls flowing through cracks and holes toward the bottom of the ice sheet. Take a look at video from Marco Tedesco of City College of New York, who is leading a project to study what factors affect ice sheet melting. The photo at left shows a camp by the side of a stream flowing from a lake — all of it on top of the ice sheet.
“This past melt season was exceptional, with melting in some areas stretching up to 50 days longer than average,” Tedesco said in a statement. “Melting in 2010 started exceptionally early at the end of April and ended quite late in mid- September.”
Summer 2010 temperatures in Greenland were up to 5.4 degrees F (3 degrees C) above average, and there was reduced snowfall, Tedesco and his co-authors noted in an article in the current edition of Environmental Research Letters. Nuuk, Greenland’s capital, had the warmest spring and summer since records began there in 1873. Average summer temperatures vary widely, but in coastal areas hover around freezing.
Being on the Level About Sea Level
Stuart Gaffin is a climate researcher at Columbia University and a regular contributor with his blog “Exhausted Earth”. ThomsonReuters is not responsible for the content – the views are the author’s alone.
Bjorn Lomborg is a Danish political scientist who makes a semi-career (if not career) out of countering claims about global warming. His brand of writing tends to throw major counter claims out there on quite big climate issues, in short pithy sound-bites, often without data, letting the reader try and figure it out.
