Sunday, 1 August 2021

Late July and Greenland's Ice Sheet

A graphic illustration of the rate of melting of Greenland's massive ice sheet is revealed in the numbers released, last week, by the Danish government (https://www.theguardian.com/environment/2021/jul/30/greenland-ice-sheet-florida-water-climate-crisis). On Tuesday 27th July, 8.5bn tons of surface mass were lost from the ice sheet. This is sufficient water to cover the entire state of Florida, to a depth of around 2 inches. On Wednesday 28th July, a record temperature of just under 20 degrees Centigrade was reached. On Thursday 29th July, a further 8.4bn tons of surface mass were lost. Almost another 2 inches over an area the size of Florida! The melt water, of course, actually goes into the oceans, raising sealevels. This, not only increases the risk of coastal flooding, it reduces the amount of solar energy relected back into space by polar ice. This will increase temperatures, melting more ice.

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