Former US Vice President Al Gore warned people about climate change in 2007, saying, "The North Polar ice cap is falling off a cliff. It could be completely gone in summer in as little as seven years. Seven years from now."

Gore gave the comments after accepting the Nobel Peace Prize for his campaign regarding climate change.

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Seven years after the warning, however, Gore has fortunately been proven wrong.

For the second year in a row, the Arctic ice cap has again expanded between 43 to 63 percent since 2012.

An area in the Arctic Ocean the size of Alaska was once open water in 2012. Ice now covers 15 percent of the ocean, measuring up to 5.62 million square kilometers.

The increase is estimated at 1.71 square kilometers over the last two years.

The figures were gathered by the US National Snow and Ice Data Center, which measures the expansion on a daily basis. The daily readings are co-funded by NASA.

The long-term trend still shows a decline, but the new data is the highest level of ice recorded since 2006.

Aside from expanding, the ice has become more concentrated and becoming denser. This makes the ice more resilient to future melting.

"It seems that an unusually cool summer in 2013 allowed more ice to survive through to last winter. This means that the Arctic sea ice pack is thicker and stronger than usual, and this should be taken into account when making predictions of its future extent," said Professor Andrew Shepherd, of Leeds University, an expert in climate satellite monitoring.

The new data reveals that the "spiral of death" predicted by Gore in 2007 has been reversed, according to Judith Curry, professor of earth and atmospheric sciences at Georgia Institute of Technology in Atlanta.

Cambridge University's  Peter Wadhams warns the "spiral of death" might just be experiencing a delay. He believes the Arctic will be ice-free by September next year.

"I still think that it is very likely that by mid-September 2015, the ice area will be less than one million square kilometers -- the official designation of ice-free, implying only a fringe of floes around the coastlines. That is where the trend is taking us," he explained.

For Wadham's projection to prove true, Arctic ice would have to melt faster than ever in recorded history.

TagsArctic Ice, al gore, North Polar Ice cap