Overshooting the critical threshold for the Greenland ice sheet.

ABSTRACT: Melting of the Greenland ice sheet (GrIS) in response to anthropogenic global warming poses a severe threat in terms of global sea-level rise (SLR)¹. Modelling and palaeoclimate evidence suggest that rapidly increasing temperatures in the Arctic can trigger positive feedback mechanisms for the GrIS, leading to self-sustained melting^2-4, and the GrIS has been shown to permit several stable states⁵. Critical transitions are expected when the global mean temperature (GMT) crosses specific thresholds, with substantial hysteresis between the stable states⁶. Here we use two independent ice-sheet models to investigate the impact of different overshoot scenarios with varying peak and convergence temperatures for a broad range of warming and subsequent co

SUBMITTER: Bochow N 

PROVIDER: S-EPMC10584691 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature