Sea Ice Loss Video
Take a close look at changes in the extent of arctic sea ice between 1978 to 2008. The video moves fast, but pay attention to the dates in the upper right corner. Summer months show the largest contraction, but as time goes on, most subsequent winters don’t expand to the coverage of the previous year. Red dots represent the buoys that measure the ice.
PBI thanks Ignatius G. Rigor at the University of Washington, Seattle Applied Physics Lab, who created this video.
Arctic Climate Temperature Trend
The loss of arctic sea ice correlates with the rise in arctic temperatures, as shown on this graph. Over the last 2,000 years,
• Green depicts a gradual cooling trend over the last 2,000 years.
• Blue depicts decade-by-decade variations.
• Red indicates the abrupt warming spike in recent decades.
Source: The Journal Science: University Corporation for Atmospheric Research
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