2026-06-27T16:21:31Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1337452026-03-04T00:57:36Zcom_20.500.14352_14col_20.500.14352_15

Gutiérrez González, Lucía Robinson, Alexander Álvarez Solas, Jorge Tabone, Ilaria Swierczek Jereczek, Jan Christophe Lucien Moreno Parada, Daniel Montoya Redondo, María Luisa 2026-03-03T17:44:21Z 2026-03-03T17:44:21Z 2026-02-12 Gutiérrez-González, L., Robinson, A., Alvarez-Solas, J., Tabone, I., Swierczek-Jereczek, J., Moreno-Parada, D., and Montoya, M.: Hysteresis of the Greenland ice sheet from the Last Glacial Maximum to the future, The Cryosphere, 20, 1139–1162, https://doi.org/10.5194/tc-20-1139-2026, 2026. 1994-0416 10.5194/tc-20-1139-2026 https://hdl.handle.net/20.500.14352/133745 1994-0424 https://doi.org/10.5194/tc-20-1139-2026, 2026. https://tc.copernicus.org/articles/20/1139/2026/ The Greenland Ice Sheet (GrIS) has undergone accelerated ice-mass loss in recent decades and it is expected to be one of the main contributors to global sea-level rise in the coming century. Due to the existence of positive feedbacks governing its mass balance, it is thought to be a tipping element of the Earth system. Its stability has been studied under temperatures ranging from the present day to a global warming of +4 K, showing a threshold behavior leading to an ice-free state for warmer temperatures. However, its stability at lower temperatures has not been studied yet. Here we use the ice-sheet model Yelmo to obtain the stability diagram of the GrIS for the full range of glacial-interglacial temperatures, with regional summer air temperature anomalies relative to present extending from a climate representative of the Last Glacial Maximum (−12 K) to a warmer climate (+4 K). We find that the hysteresis persists in almost the entire studied range. Consistent with previous studies, a critical threshold is found between +1.2 and +1.8 K of regional summer air temperature anomaly, associated with atmospheric feedbacks that are represented by the coupled regional energy-moisture balance model REMBO. In addition, a second threshold is found for negative temperature anomalies, which is mainly driven by ocean warming that triggers the marine ice-sheet instability in the northeastern region of the glacial GrIS. The existence of this threshold is consistent with transient studies of the GrIS over the last glacial cycle. eng http://creativecommons.org/licenses/by/4.0/ open access Attribution 4.0 International Hysteresis of the Greenland ice sheet from the Last Glacial Maximum to the future journal article