Temperature in the Arctic is going up 6.3 degrees Centigrade per century (11 degrees Fahrenheit per century).
This chart shows arctic temperatures for the last 2000 years. Note we have been on a cooling trend until around 1960.
Arctic sea ice extent over the past 1,450 years. Note that data in this figure extend through 2008, and thus it doesn't show this year's current record low.
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