“Our projection of 2013 for the removal of ice in summer is not accounting for the last two minima, in 2005 and 2007… So given that, if you want to be conservative, we can postulate that maybe our projection is already too conservative.”

“At this rate, the Arctic Ocean could be nearly ice-free at the end of summer by 2012, much faster than previous predictions.”

“According to these models, there will be no sea ice left in the summer in the Arctic Ocean somewhere between 2010 and 2015. And it’s probably going to happen even faster than that.”

“If you asked me a couple of years ago when the Arctic could lose all of its ice, then I would have said 2100, or 2070 maybe. But now I think that 2030 is a reasonable estimate.”

“North Polar ice cap is falling off a cliff”

“If Norway’s average temperature this year equals that in 2007, the ice cap in the Arctic will all melt away, which is highly possible judging from current conditions.”

“We could have no ice at the North Pole at the end of this summer… We may have no ice at all in the Arctic Ocean in summer by 2030 or so.”

“Scientists project the Arctic will be ice-free in the summer of 2013.”

“Our best guess is 2016, plus or minus three years.”

“If this rate of melting [in 2012] is sustained in 2013, we are staring down the barrel and looking at a summer Arctic which is potentially free of sea ice within this decade.”

“This collapse, I predicted would occur in 2015-16 at which time the summer Arctic would become ice-free. The final collapse towards that state is now happening and will probably be complete by those dates.”

“Arctic ice-free by 2015.”

“It could even be this year or next year but not later than 2015 there won’t be any ice in the Arctic in the summer.”

“A US Navy scientist predicts that the Arctic could lose its summer sea ice cover as early as 2016 – 84 years ahead of conventional model projections.”

“Time horizons for a nearly sea ice-free summer for these three approaches are roughly 2020 or earlier, 2030 ± 10 years, and 2040 or later.”

“Next year or the year after, the Arctic will be free of ice.”

“The chance that there will be any permanent ice left in the Arctic after 2022 is essentially zero.”

“One of the most eminent climate scientists in the world, Peter Wadhams, believes an ice-free Arctic will occur one summer in the next few years and that it will initiate a dangerous methane feedback that will increase temperatures dramatically.”

“The Arctic Ocean could become ice-free in the summer in the next 20 years due to a natural, long-term warming phase in the tropical Pacific that adds to human-caused warming.” (Note: This implies potential for early 2020s in accelerated scenarios, which has not occurred.)

“One model projected an ice-free summer as early as 2023”