Showing posts with label sealevel. Show all posts
Showing posts with label sealevel. Show all posts

Monday, March 17, 2008

Polar ice cap melting away in 2008 ?

How low will they go? Putting a date on the melting of the Arctic ice cap has been a popular prediction game among scientists of late; in recent months, we've heard estimates ranging from 2030 to as early as 2013.



The latest salvo comes courtesy of Xinhua, which reports that Olav Orheim, the head of the Norwegian International Polar Year Secretariat, is placing his money on this summer. Noting that its ice sheet had reached a historical low of 3m sq. km last summer - it covered around 7.5m sq. km as recently as 2000 - Orheim told Xinhua that "if Norway's average temperature this year equals that in 2007, the ice cap in the Arctic will all melt away." Barring this disaster, Orheim predicted that excess carbon dioxide emissions and higher average temperatures would unpredictably alter the region's fragile ecosystems. On a separate note, he said that Asia would likely be hardest hit by rising sea levels, estimating that a one meter rise would affect "nearly 100 million people on an area of 800,000 square km in Asia and direct economic loss will amount to 400 billion U.S. dollars."



Shrinking ice cap in the Arctic Ocean even produced a new sea route from the Bering Strait to Oslo last summer, said Orheim. Maritime enterprises in some industrial nations such as the UnitedStates and Britain have started mulling on how to use it to cut cost over the past six months, he added.

Olav Orheim

Dr. Olav Orheim is a distinguished glaciologist, climatologist and polar expert who has spent more than thirty years studying the effects of global warming. Dr. Orheim, was Head of Research at the Norwegian Polar Institute's (NPI) Antarctic Section from 1972 to 1993, before becoming the NPI's Managing Director. Alongside his work with the NPI he was a Professor at the University of Bergen's Department of Geology from 1989-2005, where he specialised in glaciology. He is currently Executive Secretary of the Norwegian International Polar Year.

A renowned authority on climate change and its effects on the planet's poles, Dr Orheim is currently Senior Adviser to the Norwegian Ministry of Environment.