Sea Ice Loss in the Arctic Points to Greenhouse Gases

By on Nov 24, 2011 in Environment, Science Comments
Arctic Sea Ice

Arctic Sea Ice
Image Credit: Top News

Sea ice was recorded at its lowest level in September, 2011 by a Japanese sensor in an Aqua satellite of NASA, as reported by the University of Bremen in Germany. The satellite data of the US National Snow and Ice Data Center recorded the 2011 sea ice to be the second-lowest on record, next to the 2007 record.

Several factors have contributed to the decline of sea ice, according to reports by several international news sites. A published study on Nature journal suggests that greenhouse gases contributes to the global warming that leads to sea ice loss in the Arctic.

Christopher Kinnard, lead author of the sea ice study, said in a statement that “Everything is trending up – surface temperature, the atmosphere is warming, and it seems also that the ocean is warming and there is more warm and saline water that makes it into the Arctic.” He suggests that this is the reason why “the sea ice is eroded from below and melting from the top.”

Kinnard explained that sea ice loss in the past was usually cause by change in ocean currents that lead to the influx of warm, salty water from the North Atlantic into the Arctic.

The researchers said that sea ice level in the Arctic have declined dramatically over the last 30 years.



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