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Arctic sea ice is getting thinner and younger. Satellite data and sonar records from submarines show how the ice coverage in the north is getting more and more seasonal. In the past, ice would build up year over year, getting thicker and stronger. But seasonal ice disappears each summer, meaning more open ocean in the summer, and less of the Sun’s energy being reflected back into space.
A new video from NASA shows in clear detail the peril that Arctic sea ice faces in our warming world. Approximately 70% of all the ice is now seasonal. The ice is the thinnest and youngest it’s been in the 60 years that records have been kept.
NASA - Track - Coverage - Sea - Ice
NASA’s been keeping track of the minimum coverage of arctic sea ice for 40 years. Over that time, it’s been shrinking due to climate change. The loss of perennial ice, or ice that builds up and lasts year over year, is speeding up. The thinner seasonal ice is much...
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