Future Sea Level Change Under Coupled Model Intercomparison Project Phase 5 and Phase 6 Scenarios From the Greenland and Antarctic Ice Sheets

Antony J. Payne*, Sophie Nowicki, Ayako Abe-Ouchi, Cécile Agosta, Patrick Alexander, Torsten Albrecht, Xylar Asay-Davis, Andy Aschwanden, Alice Barthel, Thomas J. Bracegirdle, Reinhard Calov, Christopher Chambers, Youngmin Choi, Richard Cullather, Joshua Cuzzone, Christophe Dumas, Tamsin L. Edwards, Denis Felikson, Xavier Fettweis, Benjamin K. Galton-FenziHeiko Goelzer, Rupert Gladstone, Nicholas R. Golledge, Jonathan M. Gregory, Ralf Greve, Tore Hattermann, Matthew J. Hoffman, Angelika Humbert, Philippe Huybrechts, Nicolas C. Jourdain, Thomas Kleiner, Peter Kuipers Munneke, Eric Larour, Sebastien Le clec'h, Victoria Lee, Gunter Leguy, William H. Lipscomb, Christopher M. Little, Daniel P. Lowry, Mathieu Morlighem, Isabel Nias, Frank Pattyn, Tyler Pelle, Stephen F. Price, Aurélien Quiquet, Ronja Reese, Martin Rückamp, Nicole Jeanne Schlegel, Hélène Seroussi, Andrew Shepherd, Erika Simon, Donald Slater, Robin S. Smith, Fiammetta Straneo, Sainan Sun, Lev Tarasov, Luke D. Trusel, Jonas Van Breedam, Roderik van de Wal, Michiel van den Broeke, Ricarda Winkelmann, Chen Zhao, Tong Zhang, Thomas Zwinger

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Projections of the sea level contribution from the Greenland and Antarctic ice sheets (GrIS and AIS) rely on atmospheric and oceanic drivers obtained from climate models. The Earth System Models participating in the Coupled Model Intercomparison Project phase 6 (CMIP6) generally project greater future warming compared with the previous Coupled Model Intercomparison Project phase 5 (CMIP5) effort. Here we use four CMIP6 models and a selection of CMIP5 models to force multiple ice sheet models as part of the Ice Sheet Model Intercomparison Project for CMIP6 (ISMIP6). We find that the projected sea level contribution at 2100 from the ice sheet model ensemble under the CMIP6 scenarios falls within the CMIP5 range for the Antarctic ice sheet but is significantly increased for Greenland. Warmer atmosphere in CMIP6 models results in higher Greenland mass loss due to surface melt. For Antarctica, CMIP6 forcing is similar to CMIP5 and mass gain from increased snowfall counteracts increased loss due to ocean warming.

Original languageEnglish
Article numbere2020GL091741
Pages (from-to)1-8
JournalGeophysical Research Letters
Volume48
Issue number16
DOIs
Publication statusPublished - 28 Aug 2021

Bibliographical note

Funding Information:
The authors would like to thank the Climate and Cryosphere (CliC) project for providing support for ISMIP6 through the sponsorship of workshops and hosting the ISMIP6 website. We acknowledge the University at Buffalo for their help with ISMIP6 data distribution, and the multiple agencies that support CMIP5, CMIP6, and the Earth System Grid Federation. This is ISMIP6 contribution number 12. This project received funding from the European Union's Horizon 2020 research and innovation program under Grant agreement No 869304, PROTECT contribution number 4.

Funding Information:
The authors would like to thank the Climate and Cryosphere (CliC) project for providing support for ISMIP6 through the sponsorship of workshops and hosting the ISMIP6 website. We acknowledge the University at Buffalo for their help with ISMIP6 data distribution, and the multiple agencies that support CMIP5, CMIP6, and the Earth System Grid Federation. This is ISMIP6 contribution number 12. This project received funding from the European Union's Horizon 2020 research and innovation program under Grant agreement No 869304, PROTECT contribution number 4.

Publisher Copyright:
© 2021. The Authors.

Funding

The authors would like to thank the Climate and Cryosphere (CliC) project for providing support for ISMIP6 through the sponsorship of workshops and hosting the ISMIP6 website. We acknowledge the University at Buffalo for their help with ISMIP6 data distribution, and the multiple agencies that support CMIP5, CMIP6, and the Earth System Grid Federation. This is ISMIP6 contribution number 12. This project received funding from the European Union's Horizon 2020 research and innovation program under Grant agreement No 869304, PROTECT contribution number 4. The authors would like to thank the Climate and Cryosphere (CliC) project for providing support for ISMIP6 through the sponsorship of workshops and hosting the ISMIP6 website. We acknowledge the University at Buffalo for their help with ISMIP6 data distribution, and the multiple agencies that support CMIP5, CMIP6, and the Earth System Grid Federation. This is ISMIP6 contribution number 12. This project received funding from the European Union's Horizon 2020 research and innovation program under Grant agreement No 869304, PROTECT contribution number 4.

Keywords

  • Antarctica
  • Greenland
  • ice sheet
  • sea level

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