OSLO: Winter sea ice around a Norwegian Arctic island has thinned to less than one metre since the 1960s, according to a study on Tuesday of a region that may be more attractive to oil firms because of climate change.

The Norwegian Polar Institute said ice around Hopen island southeast of the Svalbard archipelago had become more than 40 cms thinner in the past 40 years, in what it called the first long-term study of ice thickness in the Barents Sea.

“Since the year 2000 there have been no observations of ice thicker than one metre at Hopen, and the local air and water temperature has also risen,” the Institute said in a statement.

Hopen is a narrow island about 30 km long off north Norway which is home to polar bears. Ice around the entire Arctic reached a record low in September 2005, the end of the northern summer.

The UN Climate Panel says temperatures are rising more rapidly in the Arctic than on most of the planet because of global warming, stoked by human use of fossil fuels. Darker water and land soak up more heat than reflective ice and snow. “The reduced see ice thickness at Hopen is in line with the generally reduced volume of ice in the Barents Sea and the whole Arctic,” said Sebastain Gerland of the Polar Institute.—Reuters