The Washington Post says Arctic sea ice has seen irreversible thinning over the past fifteen years.
Fifteen years ago the ice at the North Pole was about 1.5 meters thick, prompting academics to warn about an imminent ice-free Arctic. Al Gore predicted this at the Nobel Prize ceremony in 2007.
“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,” said Fortier, who leads an international team of researchers in the Arctic”
There is more sea ice now than when Al Gore made that forecast.
Now the ice at the North Pole is two meters thick, the same as it was in 1958.
“Although the idea that a solid ice sheet covers the central Arctic has lingered stubbornly in the popular fancy, the northern cap of ice worn by our planet is actually a thin crust— on the whole, only about seven feet thick”