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For this study, [lead author Eric] Rignot and his collaborators conducted what he called the longest-ever assessment of remaining Antarctic ice mass. Spanning four decades, the project was also geographically comprehensive; the research team examined 18 regions encompassing 176 basins, as well as surrounding islands.
[...] The team was able to discern that between 1979 and 1990, Antarctica shed an average of 40 gigatons of ice mass annually. (A gigaton is 1 billion tons.) From 2009 to 2017, about 252 gigatons per year were lost.
The pace of melting rose dramatically over the four-decade period. From 1979 to 2001, it was an average of 48 gigatons annually per decade. The rate jumped 280 percent to 134 gigatons for 2001 to 2017.
Four decades of Antarctic Ice Sheet mass balance from 1979–2017 (open, DOI: 10.1073/pnas.1812883116)
(Score: 3, Touché) by Pav on Thursday January 17 2019, @01:10PM (1 child)
Them thar calculus-meisters can't pull highly precise zero-points from waveforms such as these. That be either fibbing, leg pulling, or black magic worthy of a witch-burnin' such as fourier transforms and the like.
(Score: 0) by Anonymous Coward on Thursday January 17 2019, @04:08PM
Clearly they can pull such numbers from the readings theyve collected, its just that the uncertanty they report around such numbers is detached from any actual uncertainty sbout the sea level. Its like they are only reporting monte carlo error and some form of "sampling" error while ignoring everything else.