So there is no global warming

"Positive temperatures at the North Pole in winter were recorded four times between 1980 and 2010. But now they have occurred in four of the last five winters," climatologist Robert Graham of the Norwegian Polar Institute told AFP.

"We had an exceptional winter in the Arctic, the precedent had already been and we did not risk much if we said that the next one is going to be ... It's the Arctic heat," said Etienne Kapikian.

Can this be attributed to climate change?

"It is hard to say that an event is linked to global warming. But this trend we see, a hot Arctic, a cold continent, may be linked to climate change," said Marlene Kretschmer, a climatologist at the Potsdam Institute for Research on Climate Change climate change.

These episodes of rising temperatures are not good news for the Arctic ice, whose surface has never been so low at this time since the