Climate Change - Arctic sea ice

The Arctic includes an ocean covered by sea ice.
The area of Arctic sea ice is largest in March each year, and at its lowest each September.
Image result for arctic sea ice area september 2018 1979
The NSIDC also publish this graph, which is normally updated every day.

More graphs and other data are also available from the Arctic Data Archive System, operated by the Japanese Arctic Environmental Observation Center.

The total volume of Arctic sea ice has declined dramatically over time.
Arctic Ice Loss - Greg Laden's BlogNew research shows the decline in Arctic sea ice area since 1850:

Research suggests the remarkable decline of  Arctic sea ice over the last century is far beyond anything seen for a long time. 

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