- Ottawa Citizen -
An electromagnetic "bird" dispatched to the Arctic for the most detailed look yet at the thickness of the ice has turned up a reassuring picture.
The meltdown has not been as dire as some would suggest, said geophysicist Christian Haas of the University of Alberta. His international team flew across the top of the planet last year for the 2,412-kilometre survey.
They found large expanses of ice four to five metres thick, despite the record retreat in 2007.
"This is a nice demonstration that there is still hope for the ice," said Haas.
The survey, which demonstrated that the "bird" probe tethered to a plane can measure ice thickness over large areas, uncovered plenty of resilient "old" ice from Norway to the North Pole to Alaska in April 2009.
The thickness had "changed little since 2007, and remained within the expected range of natural variability," the team reports in the Geophysical Research Letters.