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https://www.abc.net.au/news/2021-04-29/satellites-show-world-s-glaciers-melting-faster-than-ever/100103340>
"Glaciers are melting more quickly, losing 31 per cent more snow and ice per
year than they did 15 years ago, according to three-dimensional satellite
measurements of all the world's mountain glaciers.
Using 20 years of recently declassified satellite data, scientists calculated
that the world's 220,000 mountain glaciers have been losing more than 298
billion metric tonnes of ice and snow per year since 2015, according to a study
in Wednesday's journal
Nature.
The annual melt rate from 2015 to 2019 is 71 billion metric tonnes more per
year than it was from 2000 to 2004.
Global thinning rates, different than volume of water lost, doubled in the last
20 years.
Half the world's glacial loss is coming from the United States and Canada.
Romain Hugonnet, a glaciologist at ETH Zurich and the University of Toulouse in
France who led the study, said Alaska's melt rates were "among the highest on
the planet," with the state's Columbia glacier retreating about 35 metres a
year.
Almost all the world's glaciers are melting, even ones in Tibet that used to be
stable, the study found.
Except for a few in Iceland and Scandinavia that are fed by increased
precipitation, the melt rates are accelerating around the world."
Cheers,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
