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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Sdgla who wrote (909802)	12/20/2015 6:27:28 PM
From: Wharf Rat	Read Replies (2) \| Respond to of 1574098

He's lying, of course. That's why he's writing comic books, while scientists are presenting papers like the following. Pay no attention to the part that says "which currently see losses of over 250bn tonnes of ice each year". Cryosat captures Greenland's shifting shape By Jonathan AmosBBC Science Correspondent, San Francisco 17 December 2015 It is one of the clearest views we have yet had of the recent changes occurring across Greenland's ice sheet. Scientists using Europe's Cryosat radar spacecraft are now routinely mapping variations in height on a fine scale, both in time and in area. The UK-led team's analysis shows that Greenland is shedding ice to the ocean. Their preliminary assessment is very close to that produced from gravity satellites, which currently see losses of over 250bn tonnes of ice each year. But while the headline numbers may be similar, Cryosat brings important additional detail to the picture. It allows the team to study changes across the entire ice sheet at fine resolution, meaning the scientists are able to monitor the behaviour of individual glaciers. Cryosat is also helping them to track seasonal variations in the elevation of the ice sheet, which will permit the researchers to investigate how the ice sheet changes from year to year. "These results allow us to identify key glaciers which, in the last few years, are showing signs of rapid change," said Dr Malcolm McMillan from the NERC Centre for Polar Observation and Modelling (CPOM) at Leeds University. The new study updates a previous assessment by the Alfred Wegener Institute, and complements existing measurements made by the US space agency's GRACE gravity satellites. These are spacecraft that can essentially "weigh" the ice sheet from orbit. Dr McMillan and colleagues are presenting their work this week in San Francisco at the Fall Meeting of the American Geophysical Union, the largest annual gathering of Earth scientists. bbc.com