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Arctic Sea Ice Escalator
September Arctic sea ice extent data since 1980 from the National Snow and Ice Data Center (blue diamonds). "Recovery" years, meaning years when the sea ice extent is greater than the previous year, are highlighted in red to mock the repeated cynical claims of climate change "skeptics" that global warming has somehow stopped. Many factors affect the annual summer decrease in Arctic sea ice extent, and it is illogical at best to claim any "trend" by cherry-picking only brief periods of data. The obvious true long-term trend in Arctic sea ice extent (red second-order polynomial curve fit) is that it is declining at an accelerating rate.
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