Global warming is having a major impact on the polar region.
“In the last few days it has been losing 100,000 sq km a day, a record in itself for August”
ith the melt happening at an unprecedented rate of re than 100,000 sq km a day, and at least a week of further melt expected before ice begins to reform ahead of the northern winter, satellites are expected to confirm the record – currently set in 2007 – within days. "Unless something really unusual happens we will see the record broken in the next few days. It might happen this weekend, almost certainly next week," Julienne Stroeve, a scientist at the US National Snow and Ice Data Centre (NSIDC) in Boulder, Colorado, told the Guardian. "In the last few days it has been losing 100,000 sq km a day, a record in itself for August. A storm has spread the ice pack out, opening up water, bringing up warmer water. Things are definitely changing quickly." Because ice thickness, volume, extent and area are all measured differently, it may be a week before there is unanimous agreement among the world's cryologists (ice experts) that 2012 is a record year. Four out of the nine daily sea ice extent and area graphs kept by scientists in the US, Europe and Asia suggest that records have already been broken. "The whole energy balance of the Arctic is changing. There's more heat up there. There's been a change of climate and we are losing more seasonal ice. The rate of ice loss is faster than the models can capture [but] we can expect the Arctic to be ice-free in summer by 2050," said Stroeve.
Julienne Stroeve, from the National Snow and Ice Data Centre in Colorado, is here to track and “characterise” the ice we pass though. She mostly works from satellite data, but they can’t tell the quality or age of the ice or the way it is moving.
“The permafrost is melting and this is jeopardising roads and buildings. The coastline is changing, there is more erosion and storms, and there are fewer mammals like polar bears” "Only 15 years ago I didn't expect to see such dramatic changes – no one did.week in the Arctic were 14C, which is pretty warm." Scientists at the Danish Meteorological Institute, the Arctic Regional Ocean Observing System in Norway and others in Japan have said the ice is very close to its minimum recorded in 2007. The University of Bremen, whose data does not take into account ice along a 30km coastal zone, says it sees ice extent below the all-time record low of 4.33m sq km recorded in September 2007. The consequences of losing the Arctic’s ice coverage for the summer months are expected to be immense. If the white sea ice no longer reflects sunlight back into space, the region can be expected to heat up even more than at present. This could lead to an increase in ocean temperatures with unknown effects on weather systems in northern latitudes. In a statement, a Greenpeace spokesman said: “The disappearing Arctic still serves as a stark warning to us all. Data shows us that the frozen north is teetering on the brink. The level of ice ‘has remained far below average’ and appears to be getting thinner, leaving it more vulnerable to future melting. The consequences of further rapid ice loss at the top of the world are of profound importance to the whole planet. This is not a warning we can afford to ignore.”