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Wow:

Scientists in the Arctic are warning that this summer's record-breaking melt is part of an accelerating trend with profound implications.

Norwegian researchers report that the sea ice is becoming significantly thinner and more vulnerable.

Last month, the annual thaw of the region's floating ice reached the lowest level since satellite monitoring began, more than 30 years ago.

All of the Climate Change models show a range of expectations over the next century. What happens if they are wrong and are underestimating the change?

The Norwegian Polar Institute (NPI) is at the forefront of Arctic research and its international director, Kim Holmen, told the BBC that the speed of the melting was faster than expected.

"It is a greater change than we could even imagine 20 years ago, even 10 years ago," Dr Holmen said.

"And it has taken us by surprise and we must adjust our understanding of the system and we must adjust our science and we must adjust our feelings for the nature around us."

The scientists involved are indeed surprised by these findings:

During a visit to the port, one of the scientists involved, Dr Edmond Hansen, told me he was "amazed" at the size and speed of this year's melt.

"As a scientist, I know that this is unprecedented in at least as much as 1,500 years. It is truly amazing - it is a huge dramatic change in the system," Dr Hansen said.

"This is not some short-lived phenomenon - this is an ongoing trend. You lose more and more ice and it is accelerating - you can just look at the graphs, the observations, and you can see what's happening."

And the ramifications?

The most cautious forecasts say that the Arctic might become ice-free in the summer by the 2080s or 2090s. But recently many estimates for that scenario have been brought forward.

Early research investigating the implications suggests that a massive reduction in sea ice is likely to have an impact on the path of the jet stream, the high-altitude wind that guides weather systems, including storms.

Stay tuned.

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