The experts told us that we had to wait until the end of September to make a valid comparison. The experts also told us that the Arctic would be ice-free this year. Or last year.
Arctic Sea Ice Gone in Summer Within Five Years?
Seth Borenstein in Washington
December 12, 2007
This week, after reviewing his own new data, NASA climate scientist Jay Zwally said: “At this rate, the Arctic Ocean could be nearly ice-free at the end of summer by 2012, much faster than previous predictions.”
the Arctic will be ice-free in the summer of 2013
– John Kerry, US Secretary of State
James Hansen : ‘This is the last chance’
“We see a tipping point occurring right before our eyes,” Hansen told the AP before the luncheon. “The Arctic is the first tipping point and it’s occurring exactly the way we said it would.”
Hansen, echoing work by other scientists, said that in five to 10 years, the Arctic will be free of sea ice in the summer.