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Sea level rise quickens as Greenland ice sheet sheds record amount:
Greenland's massive ice sheet saw a record net loss of 532 billion tonnes last year, raising red flags about accelerating sea level rise, according to new findings.
That is equivalent to an additional three million tonnes of water streaming into global oceans every day, or six Olympic pools every second.
Crumbling glaciers and torrents of melt-water slicing through Greenland's ice block—as thick as ten Eiffel Towers end-to-end—were the single biggest source of global sea level rise in 2019 and accounted for 40 percent of the total, researchers reported in the journal Communications Earth & Environment.
[...] "2019 and the four other record-loss years have all occurred in the last decade," lead author Ingo Sasgen, a glaciologist at the Helmholtze Centre for Polar and Marine Research in Germany, told AFP.
The ice sheet is now tracking the worst-case global warming scenario of the UN's climate science advisory panel, the IPCC, noted Andrew Shepherd, director of the Centre for Polar Observation and Modelling at the University of Leeds.
[...] Until 2000, Greenland's [runoff ...] was compensated by fresh snowfall.
[...] In 2019, the ice sheet lost a total of 1.13 trillion tonnes, about 45 percent from glaciers sliding into the sea, and 55 percent from melted ice, said Sasgen. It gained about 600 billion tonnes through precipitation.
A study in the same journal last week concluded that the Greenland's ice sheet has passed a "tipping point", and is now doomed to disintegrate, though on what time scale is unknown.
Journal References:
Ingo Sasgen, Bert Wouters, Alex S. Gardner, et al. Return to rapid ice loss in Greenland and record loss in 2019 detected by the GRACE-FO satellites [open], Communications Earth & Environment (DOI: 10.1038/s43247-020-0010-1)
Michalea D. King, Ian M. Howat, Salvatore G. Candela, et al. Dynamic ice loss from the Greenland Ice Sheet driven by sustained glacier retreat [open], Communications Earth & Environment (DOI: 10.1038/s43247-020-0001-2)
(Score: 1) by MIRV888 on Sunday August 23 2020, @12:47PM (3 children)
You know how we forge modern steel?
How we put man made objects in space?
How turbofan engines are manufactured & serviced?
How we refine uranium into fuel or weapons grade material?
Because it isn't by implying the amounts of anything.
What you need is legitimate, vetted & peer reviewed data to support your assertion that this melting isn't even unusual.
Science or no one will believe you.
So you've got your work cut out for you.
Ice cores called. I couldn't understand them because they were laughing so hard.
(Score: 2) by Phoenix666 on Sunday August 23 2020, @03:05PM (1 child)
I replied at greater length downthread, but you are so cocksure below and here that I needed to correct what you have said to point out those ice cores are laughing at you, not the poster you were replying to.
In fact, an honest student of the science and data would go beyond the ice cores that already disprove what you assert and point out in the same source I presented it discusses the evidence for even much higher temperatures and concentrations of atmospheric CO2 millions of years ago before humans even evolved or learned how to burn fossil fuels.
Washington DC delenda est.
(Score: 0) by Anonymous Coward on Sunday August 23 2020, @08:08PM
I enjoyed the part where Pimunu ripped you to shreds. So polite about it too. I had no idea so manybusers around herr, like yourself, are so scientifically illiterate.
(Score: 0) by Anonymous Coward on Monday August 24 2020, @08:34AM
Durrrrrc I have mod points durrrrrrrrhhhrrrrrrrr