Thursday, February 14, 2013
What will happen to the Polar bear?
Why? Arctic sea ice could disappear within 10 years as global warming increases speed of melting.
Arctic sea ice is melting at a faster rate than previously believed, a group of scientists have claimed.
The European Space Agency say that new satellites they are using have revealed that 900 cubic kilometres of ice have disappeared over the last year.
This is 50 per cent higher than the current estimates from environmentalists, they claim.
The scientists launched the CryoSat-2 probe in 2010 specifically to study ice thickness. Until then most studies had focused on the coverage of the ice. Submarines were also sent into the water to analyse the ice. The methods are said to have given a picture of changes in the ice around the north pole since 2004. The study revealed that the depth of ice had also been decreasing in addition to the amount of sea it stretched across. Data from the exploration shows that in winter 2004, the volume of sea ice in the central Arctic was approximately 17,000 cubic km. This winter it was 14,000 km, according to CryoSat.