Ice-sheet regime shifts with climate warming (opens in new tab)

Ice-sheet responses to environmental forcing are often framed in terms of temperature thresholds linked to ice-sheet volume. To better capture their potential for abrupt change and feedbacks within the Earth system, a more complete assessment of ice-sheet configuration and dynamics is required. Here we use a coupled ice sheet–ice shelf model to identify three distinct regime types, each with characteristic behaviour independent of ice volume. These regimes are diagnosed from the magnitude and...