• https://www.sciencealert.com/the-see-could-rise-by-more-than-7-metres-if-greenland-just-keeps-melting  

(Persefoni Photo Images/Moment/Getty Images)ENVIRONMENT

JONATHAN BAMBER, THE CONVERSATION21 NOVEMBER 2020

Greenland is the largest island in the world and on it rests the largest ice mass in the Northern Hemisphere. If all that ice melted, the sea would rise bymore than 7 metres.

But that’s not going to happen, is it? Well, not any time soon, but understanding how much of the ice sheet might melt over the coming century is a critical and urgent question that scientists are trying to tackle using sophisticated numerical models of how the ice sheetinteracts with the rest of the climate system.

The problem is that the models aren’t that good at reproducing recent observations and are limited by our poor knowledge of the detailed topography of the subglacial terrain and fjords, which the ice flows over and in to.

One way around this problem is…