Arctic Sea Ice Trends: Down, Down Down

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Two graphs, inluding the brand new one to the left, show two (mutually affirming) analyses of the trajectory of Arctic sea ice over the last 30 years.

The National Snow and Ice Data Center graph (left) shows Average Monthly Sea Ice Extent. The figure below shows a Polar Science Center model-generated calculation of Sea Ice Volume. Notwithstanding that NSIDC reports Arctic temperatures in October were 4 to 6 degrees Celsius (7 to 10 degrees Fahrenheit) higher than normal, there is something chilling in the similarity of the two graphs. 

PIOMAS Ice Volume Anomaly

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