Donate Today!



 

Sign-Up for Newsletter!

 

Popular content

'Unprecedented,' 'Amazing,' 'Goliath': Scientists Describe Arctic Sea Ice Melt

Arctic Sea ice levels continue to drop below record set on Aug. 26

- Common Dreams staff

The rate of Arctic Sea ice melt has caught scientists by surprise, leaving them to describe the current record low levels as "amazing," "a Goliath" and "unprecedented."  While a record low was recorded on Aug. 26, the ice level continues to fall, and the National Snow and Ice Data Center reports that there is still a week left in the melting season.

The speed of the Arctic ice melt is astounding, scientists say. "It is a greater change than we could even imagine 20 years ago, even 10 years ago," Dr. Kim Holmen, international director of the Norwegian Polar Institute told the BBC. "And it has taken us by surprise and we must adjust our understanding of the system and we must adjust our science and we must adjust our feelings for the nature around us."

"This year's melting season is a Goliath," also notes geophysicist Marco Tedesco, director of the Cryospheric Processes Laboratory at City University of New York, the Wall Street Journal reports. "The ice is being lost at a very strong pace."

These scientists' opinions are no anomalies.

Weather Underground co-founder Dr. Jeff Masters writes that "Every major scientific institution that tracks Arctic sea ice agrees that new records for low ice area, extent, and volume have been set. These organizations include the University of Washington Polar Science Center (a new record for low ice volume), the Nansen Environmental & Remote Sensing Center in Norway, and the University of Illinois Cryosphere Today."

The National Snow and Ice Data Center illustrates the melt since 1979 in the graph below, showing a decline in the ice extent at 10.2% per decade:

Masters adds that the Arctic melt level record might go back even further.  "Satellite records of sea ice extent date back to 1979, though a 2011 study by Kinnard et al. shows that the Arctic hasn't seen a melt like this for at least 1,450 years," writes Masters.

Another scientist with the Norwegian Polar Institute engaged in Arctic research, Dr. Edmond Hansen, confirms the historic levels of the ice melt, and tells the BBC it is "amazing."

"As a scientist, I know that this is unprecedented in at least as much as 1,500 years. It is truly amazing -- it is a huge dramatic change in the system."

"This is not some short-lived phenomenon -- this is an ongoing trend. You lose more and more ice and it is accelerating -- you can just look at the graphs, the observations, and you can see what's happening," Hansen said.

Masters notes that the ice melt has real impacts on the climate, since the white snow and ice reflect sunlight while the ocean absorbs it.  As the ice melts and we have more sea, we create "a recipe for more and faster global warming," writes Masters.

Arctic sea ice extent for August 2012 was 4.72 million square kilometers (1.82 million square miles). The magenta line shows the 1979 to 2000 median extent for that month. The black cross indicates the geographic North Pole. (Credit: National Snow and Ice Data Center)