Projected land ice contributions to twenty-first-century sea level rise.

@article{Edwards2021ProjectedLI,
  title={Projected land ice contributions to twenty-first-century sea level rise.},
  author={Tamsin L. Edwards and Sophie M. J. Nowicki and Ben Marzeion and Regine Hock and Heiko Goelzer and H{\'e}l{\`e}ne Seroussi and Nicolas C. Jourdain and Donald A. Slater and Fiona Turner and Christopher J. Smith and Christine M. McKenna and Erika Simon and Ayako Abe‐Ouchi and Jonathan M. Gregory and Eric Y. Larour and William H. Lipscomb and Antony J. Payne and Andrew Shepherd and C{\'e}cile Agosta and Patrick M. Alexander and Torsten Albrecht and Brian A. Anderson and Xylar Storm Asay-Davis and Andy Aschwanden and Alice Barthel and Andrew Bliss and Reinhard Calov and Christopher Chambers and Nicolas Champollion and Youngmin Choi and Richard I. Cullather and Joshua K. Cuzzone and Christophe Dumas and Denis Felikson and Xavier Fettweis and Koji Fujita and Benjamin Keith Galton-Fenzi and Rupert M. Gladstone and Nicholas R. Golledge and Ralf Greve and Tore Hattermann and Matthew James Hoffman and Angelika Humbert and Matthias Huss and Philippe Huybrechts and Walter Willem Immerzeel and Thomas Kleiner and Philip D. A. Kraaijenbrink and S{\'e}bastien Le clec’h and Victoria E. Lee and Gunter R. Leguy and Christopher M. Little and Daniel P. Lowry and Jan Hendrik Malles and Daniel F. Martin and Fabien Maussion and Mathieu Morlighem and James F. O'Neill and Isabel J. Nias and Frank Pattyn and Tyler Pelle and Stephen F. Dr Price and Aur{\'e}lien Quiquet and Valentina Radic and Ronja Reese and David R. Rounce and Martin R{\"u}ckamp and Akiko Sakai and C. David Bellevue Shafer and Nicole Schlegel and Sarah Shannon and Robin S. Smith and Fiammetta Straneo and Sainan Sun and Lev Tarasov and Luke D. Trusel and Jonas Van Breedam and Roderik S. W. van de Wal and Michiel R. van den Broeke and Ricarda Winkelmann and Harry Zekollari and Chen Zhao and Tong Zhang and Thomas Zwinger},
  journal={Nature},
  year={2021},
  volume={593 7857},
  pages={
          74-82
        }
}
The land ice contribution to global mean sea level rise has not yet been predicted1 using ice sheet and glacier models for the latest set of socio-economic scenarios, nor using coordinated exploration of uncertainties arising from the various computer models involved. Two recent international projects generated a large suite of projections using multiple models2-8, but primarily used previous-generation scenarios9 and climate models10, and could not fully explore known uncertainties. Here we… 

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References

SHOWING 1-10 OF 51 REFERENCES

The future sea-level contribution of the Greenland ice sheet: a multi-model ensemble study of ISMIP6

Abstract. The Greenland ice sheet is one of the largest contributors to global mean sea-level rise today and is expected to continue to lose mass as the Arctic continues to warm. The two predominant

Committed sea-level rise for the next century from Greenland ice sheet dynamics during the past decade

We use a three-dimensional, higher-order ice flow model and a realistic initial condition to simulate dynamic perturbations to the Greenland ice sheet during the last decade and to assess their

Global environmental consequences of twenty-first-century ice-sheet melt

TLDR
Increased meltwater from the Greenland and Antarctic ice sheets will slow the Atlantic overturning circulation and warm the subsurface ocean around Antarctica, further increasing Antarctic ice loss.

The multi-millennial Antarctic commitment to future sea-level rise

TLDR
A coupled ice-sheet/ice-shelf model is used to show that if atmospheric warming exceeds 1.5 to 2 degrees Celsius above present, collapse of the major Antarctic ice shelves triggers a centennial- to millennial-scale response of the Antarctic ice sheet in which enhanced viscous flow produces a long-term commitment to sea-level rise.

Contribution of Antarctica to past and future sea-level rise

TLDR
A model coupling ice sheet and climate dynamics—including previously underappreciated processes linking atmospheric warming with hydrofracturing of buttressing ice shelves and structural collapse of marine-terminating ice cliffs—is calibrated against Pliocene and Last Interglacial sea-level estimates and applied to future greenhouse gas emission scenarios.

Twenty-first century ocean forcing of the Greenland ice sheet for modelling of sea level contribution

Abstract. Changes in ocean temperature and salinity are expected to be an important determinant of the Greenland ice sheet's future sea level contribution. Yet, simulating the impact of these changes

The role of history and strength of the oceanic forcing in sea level projections from Antarctica with the Parallel Ice Sheet Model

Abstract. Mass loss from the Antarctic Ice Sheet constitutes the largest uncertainty in projections of future sea level rise. Ocean-driven melting underneath the floating ice shelves and subsequent

Projecting Antarctica's contribution to future sea level rise from basal ice shelf melt using linear response functions of 16 ice sheet models (LARMIP-2)

Abstract. The sea level contribution of the Antarctic ice sheet constitutes a large uncertainty in future sea level projections. Here we apply a linear response theory approach to 16 state-of-the-art

Uncertainty quantification of the multi-centennial response of the Antarctic ice sheet to climate change

Abstract. Ice loss from the Antarctic ice sheet (AIS) is expected to become the major contributor to sea level in the next centuries. Projections of the AIS response to climate change based on

Revisiting Antarctic ice loss due to marine ice-cliff instability

TLDR
It is concluded that previous interpretations of these MICI projections over-estimate sea-level rise this century; because the MICI hypothesis is not well constrained, confidence in projections with MICI would require a greater range of observationally constrained models of ice-shelf vulnerability and ice-cliff collapse.
...