GPS and seismic measurements together provide a means to answer critical questions about
ice sheet behavior in a warming world.
Since that report was released, scientists have worked hard to improve their understanding
of ice sheet behavior and improve estimates of future sea level rise.
Forecasts of
future ice sheet behavior appear even more uncertain: Under the same high — global warming scenario, eight ice sheet models predicted anywhere between 0 and 27 cm of sea level rise in 2100 from Greenland melt.
«These are two of the largest and most rapidly changing glaciers in Antarctica, so the potential for their evolution to influence each other is important to consider in
modeling ice sheet behavior and projecting future sea level rise,» Dustin Schroeder, a Stanford geophysicist who led the study, told Earther.
The question now, experts said, is what the discovery of the bottoms - up ice formation means for efforts to
understand ice sheet behavior and to investigate past climate by extracting ice cores.
For example, some exciting work being done by David Pollard and Rob DeConto suggests that processes such as ice - cliff collapse and ice - shelf hydrofracturing may play important roles in
future ice sheet behavior that have not been well incorporated into most ice sheet models.
«The novel aspect of our study is that we discover biological processes play an important role in
ice sheet behavior,» Stibal said.