Greenland loses 11 billion tonnes of ice in one day

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Ruth Mottram, a scientist at DMI, said 56.5% of Greenland's ice sheet had melted on Wednesday, which is a record for this year. Additionally, the ice melt is equivalent to 4.4 million Olympic swimming pools globally. "The weather conditions that brought a heat wave to Europe last week have reached the Arctic, where scientists say they could trigger one of Greenland's biggest ice melts since 1950, when reliable records began".

Journalist Laurie Garrett posted a video this week showing a charging river of glacial melt in Greenland. It looks like yes. Now, it is accelerating the annual summer melt of the ice sheet and causing massive ice loss.

Besides, it may even last until the end of August 2019. Records go back to 1981. The Washington Post reports that in total the ice sheet lost 197 billion tonnes of runoff during July. This is because of high temperatures observed for the past four months from May, according to news website CNN.

A study published in the Proceedings of the National Academy of Sciences in April found that the melting of the Greenland ice sheet has contributed to more than a half-inch of rising ocean waters since 1972, making it the largest contributor of new water into the ocean every year.

Another sign that this year is different is the fact that the melt season began at the beginning of May, instead of the end of May.

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On Thursday, July 31, climate scientists offered estimates of ice ablation in Greenland of up to 12.5 gigatons - all from a single day.

In the long term, climate change is expected to cause even more-rapid melting - melting that is even more extreme than predicted by even the worst-case models just a few years ago. This year, the world saw its hottest month of June ever.

"These kind of heatwaves are weather events and can occur naturally, but studies have shown that both the frequency and intensity of these heatwaves have increased due to global warming", Sparrow said.

"When people talk about the average global temperature increasing by a little more than 1 degree (Celsius), that's not a huge amount to notice if you're sitting in Hamburg or London, but that's a global average and it's much greater in the polar regions", he said. "That peak of warm air has passed over the summit of the ice sheet, but the clear skies are nearly as important, or maybe even more important, for the total melt of the ice sheet".

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