This year has been a record low, beating the previous record from 2007. Extent is a little more than half the 1979-2000 median, or about 6 standard deviations below it.
“It’s hard even for people like me to believe, to see that climate change is actually doing what our worst fears dictated,” said Jennifer A. Francis, a Rutgers University scientist who studies the effect of sea ice on weather patterns. “It’s starting to give me chills, to tell you the truth.”....
....“It’s an example of how uncertainty is not our friend when it comes to climate-change risk,” said Michael E. Mann, a climate scientist at Pennsylvania State University. “In this case, the models were almost certainly too conservative in the changes they were projecting, probably because of important missing physics.”
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