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Published: Saturday 10 August, 2013

shop shoes shop shoes Arctic thawing faster than forecast

ice expert said yesterday.

This means the Arctic Ocean could be free or nearly free of summer ice by 2020 three decades sooner than the global science panels gloomiest forecast of 2050. National Snow and Ice Center in Colorado.

Right now . the Arctic helps keep the Earth cool, Scambos said in a telephone interview. Without that Ar shop shoes ctic ice, or with much less of it, the Earth will warm much faster.

That is because the ice reflects light and heat back into space; without it, the much darker land or sea absorbs more light and heat, making it more difficult for the planet to cool down, even in winter, he said. They present a far different picture than that obtained from computer models used by the scientists of the United Nationsbacked intergovernmental panel.

The IPCC report was very careful, very thorough and cautious, so they erred on the side of what would certainly occur as opposed to what might occur, Scambos said.

The range of what might occur included a much later melt up north, or a much earlier one, Scambos said.

It appears were on pace about 30 years earlier than expected to reach a state where we dont have sea ice, or at least not very much, in late summer in the Arctic Ocean, he said.

Scambos discounted the notion that the sharp warming trend in the Arctic might be due to natural climate cycles, adding: There arent many periods in history that are this dramatic in terms of natural v shop shoes ariability.

He said he had no doubt that this was caused in large part by greenhouse gases in the atmosphere, which he said was the only thing capable of changing Earth on such a large scale over so many latitudes.

Asked what it would take to fix the problem the topic of a new report by the intergovernmental panel to be released on Friday in Bangkok Scambos said a large volcanic eruption might hold Arctic ice melting at bay for a few years. shop shoes

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