If sea level rise is the major concern, and the big uncertainty is ice
sheet dynamics, I wonder why so little seems to be getting done to
resolve the uncertainty. Presumably, there's value in knowing whether
sea level will rise by 5 m in 50 years starting in 2030, or whether
it'll only rise by 40 cm by 2100? Why isn't more research focused on
ice sheet dynamics, if we believe (do we?) that they are the key
uncertainty for sea level rise, and that sea level rise is the key
danger?
And, a phrase like "ice sheet dynamics are poorly understood" does not
communicate to me whether Greenland's ice sheet could literally slide
into the sea within a few hours, once some tipping point is reached,
or whether the disintegration must at the very least take decades. If
it's the latter, why exactly?
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