Monday, July 15, 2013

Ice Sheets Melting at Rate of 300 Billion Tonnes a Year

The Independent reports Massive ice sheets melting 'at rate of 300bn tonnes a year', climate satellite shows. It's your average science reporting saying that scientists say it's far to early to draw conclusions from the data and it will take years more study to know. But it included these two paragraphs with some details I didn't know.

"The melting of the world’s two great ice sheets is one of the greatest unknowns in climate-change science. Together, the ice sheets of Greenland and Antarctica contain about 99.5 per cent of the Earth’s glacier ice, which could increase average sea levels by 63 metres if they were ever to melt completely – an event that would in any case take many centuries."

"An estimate published earlier this year suggested that the ice sheets together, combined with mountain glaciers, could contribute anywhere between 3.5cm and 36.8cm to average sea levels by the year 2100, which would be in addition to the smaller sea-level rise due to the thermal expansion of the warmer oceans."

No comments: