GENEVA, April 23: Arctic ice may be melting faster than most climate change science has concluded, the conservation group WWF said in a report published on Thursday.

It found that ice in Greenland and across the Arctic region was retreating ‘at rates significantly faster than predicted in previous expert assessments’.

The Greenland Ice Sheet -- with an ice volume of about 2.9 million cubic kilometres -- is shrinking at a fast pace and ‘could contribute much more than previously estimated to global sea-level rise during the 21st century,’ the WWF said.

It also said that Arctic warming has reduced both the area and thickness of the northern region’s multi-year sea ice, making it more prone to summer thaw.

Many climate change scientists have inadequately considered the drivers of such trends, such as interactions between sea ice thickness and water temperature, according to WWF.

“The recent acceleration in sea-ice retreat is not captured by most models,” it said in the study reviewing global warming research from 2005, including the UN Intergovernmental Panel on Climate Change (IPCC) reports issued last year.

“Our understanding of climate impacts lags behind the changes we are already seeing in the Arctic,” said Martin Sommerkorn, a climate change adviser with WWF International’s Arctic Programme.

“This is extremely dangerous, as some of these Arctic changes have the potential to substantially warm the Earth beyond what models currently forecast,” he said. WWF, formerly called the World Wildlife Fund and now known by its initials, said that climate change had already affected all aspects of ecology in the Arctic, including the region’s oceans, sea ice, ice sheets, snow and permafrost.

Fast-melting Arctic ice has the potential to cause coastal erosion, impact indigenous peoples’ livelihoods, affect marine organisms, and make the region’s mineral and other resources more accessible with new, formerly inaccessible marine routes.—Reuters