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The rocky road to accurate sea-level predictions

 

– dirt and water under Greenland control future sea-level rise

The type of material present under glaciers has a big impact on how fast they slide towards the ocean. Scientists face a challenging task to acquire data of this under-ice landscape, let alone how to represent it accurately in models of future sea-level rise. “Choosing the wrong equations for the under-ice landscape can have the same effect on the predicted contribution to sea-level rise as a warming of several degrees,” says Henning Åkesson, who led a new published study on Petermann Glacier in Greenland.

Read the article at www.bolin.su.se

Swedish icebreaker Oden at the front of Petermann Ice Shelf
Swedish icebreaker Oden at the front of Petermann Ice Shelf in 2019. The new study shows that this ice shelf may break up if ocean warming continues. Photo: Martin Jakobsson.