However, we do not know the functional form of ice sheet response to a large persistent climate forcing. (journals.plos.org)
We find evidence in paleoclimate observations and in global climate simulations supporting the existence of amplifying feedback processes that would contribute to nonlinear ice sheet response. (dotearth.blogs.nytimes.com)
Confirming these observations is a new paper showing Greenland ice sheet response is happening faster than scientists expected. (robertscribbler.com)