Tuesday, October 30, 2012

rate of ice melt in summer beats two depressions previous warning and accelerating climate change

Arctic sea ice shrank to its smallest extent ever recorded, beating the previous record low, prompting warnings accelerating climate change.

Aa> Satellite images show that was melting rapidly reduce the surface of the sea ice less than 3.5 million square kilometers this week -. Less than half the area normally occupied four decades ago

Arctic sea ice has declined since the 1970s, when the average is about 8 million square kilometers per year, but a dramatic collapse of the ice cover in one year is very rare.

a record high in 2007 of 4.17 square kilometers beat August 27, 2012. Fusion even more since then has grown to over 500,000 square kilometers

The album, which is based on an average of five days should be officially in the coming days by the National Snow and Data Centre in Colorado ice. NSIDC data show the extent of sea ice is hitting the bottom, with a fresh 3.421m square kilometers Tuesday rose slightly to 3.429m square kilometers, Wednesday and Thursday 3.45 kilometers square.


predicted Friday that the Arctic Ocean could be ice-free in summer in 20 years, which leads to potentially significant climate effects. "I'm surprised. This is an indication that the coverage of sea ice in the Arctic is changing. Trends showing less ice and thinner ice, "said Julienne Stroeve, NSIDC researcher.

reduced ice cover was played by environmental groups as a long-term signal of global warming caused by human emissions of greenhouse gases. A study published in July in the journal Letters research environment, comparing model projections to observations, it is estimated that the dramatic decline of Arctic sea ice was between 70-95% due to human activities.
Arctic sea ice follows an annual cycle of melting during the summer months and refreezing in winter. Sea ice plays a critical role in regulating the climate, acting as a giant mirror that reflects much of the sun's energy, helping to cool the Earth.

David Nussbaum, CEO of WWF-UK, said: "The disappearance of the Arctic sea ice is the most visible sign of the need to fight against climate change and ensure we have a world worthy to go to the next generation. extent of ice loss is alarming and unprecedented. This cry of alarm from the Arctic to be felt across Whitehall and meeting rooms. Everyone can take steps to reduce carbon emissions and move towards a 100% renewable. "

Ed Davey UK climate and energy secretary, said: "These results underscore the urgent need for the international community to act to understand the decline of Arctic sea ice is accelerated in recent years, global warming is increasing. Arctic temperatures at a rate faster than the global average.
"This Government is working hard to cope with climate change and work closely with our international partners 2C not to exceed 1990 levels by 2050. Am Call for EU to increase its emissions target 20% to 30% and take an active part in the negotiations on climate change under the UNFCCC in Doha later this year, I'm going to push to make progress towards a new global agreement on climate change mitigation now. The fact is that we can not afford to wait. "

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