If the world halted planet-heating pollution today, the Greenland ice sheet would lose more than 3% of its mass in the coming decades, scientists warn. To prevent even worse outcomes, immediate climate action is needed.
This context has a direct bearing on the new paper, which contains more dire predictions than other reports relying on different assumptions.that Greenland will lose roughly 1.8% of its mass and contribute up to half a foot of SLR by 2100 if humans continue spewing large amounts of greenhouse gases into the atmosphere.
For example, the processes causing ice loss from large glaciers in Greenland"often occur hundreds of meters below the sea surface in narrow fjords, where warm water can flick at the submerged ice in complex motions," the newspaper notes."In some cases, these processes may simply be playing out at too small a scale for the models to capture."
Pennsylvania State University professor Richard Alley, an ice sheet expert who was not involved in the study, told thethat"the problems are deeply challenging, will not be solved by wishful thinking, and have not yet been solved by business-as-usual." One thing that's certain, Alley added, is that higher temperatures will lead to greater amounts of SLR.
"[The] rise can be a little less than usual projections, or a little more, or a lot more, but not a lot less," he said.
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