Articles | Volume 19, issue 13
https://doi.org/10.5194/gmd-19-5881-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/gmd-19-5881-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Model experiment description paper
| 
07 Jul 2026
Model experiment description paper |
| 07 Jul 2026
| 07 Jul 2026
A sea ice free Arctic: CMIP7 Assessment Fast Track abrupt-127k experimental protocol and motivation
British Antarctic Survey, Cambridge, UK
Rachel Diamond
British Antarctic Survey, Cambridge, UK
Department of Earth Sciences, University of Cambridge, Cambridge, UK
Christian Stepanek
Alfred Wegener Institute – Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
Chris Brierley
University College London, London, UK
David Schroeder
CPOM, University of Reading, Reading, UK
Masa Kageyama
Laboratoire des Sciences du Climat et de l'Environnement (LSCE) – Institut Pierre-Simon Laplace (IPSL) UMR CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France
Matthew Pollock
University College London, London, UK
Irene Malmierca-Vallet
British Antarctic Survey, Cambridge, UK
Ed Blockley
Met Office, Exeter, UK
Alex West
Met Office, Exeter, UK
Danny Feltham
CPOM, University of Reading, Reading, UK
Jeff Ridley
Met Office, Exeter, UK
Pascale Braconnot
Laboratoire des Sciences du Climat et de l'Environnement (LSCE) – Institut Pierre-Simon Laplace (IPSL) UMR CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France
Charles J. R. Williams
University College London, London, UK
University of Bristol, Bristol, UK
Xiaoxu Shi
Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, China
Bette L. Otto-Bliesner
NSF National Center for Atmospheric Research, Boulder, CO, USA
Sophia I. Macarewich
NSF National Center for Atmospheric Research, Boulder, CO, USA
Silvana Ramos Buarque
Centre National de Recherches Météorologiques, Toulouse, France
Qiong Zhang
Department of Physical Geography, Stockholm University, Stockholm, Sweden
Allegra LeGrande
NASA Goddard Institute for Space Studies, New York, USA
Columbia University, New York, USA
Weipeng Zheng
Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Dabang Jiang
Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Polina Morozova
Institute of Geography, Russian Academy of Sciences, Moscow, Russia
Chuncheng Guo
Danish Meteorological Institute, Copenhagen, Denmark
NORCE Norwegian Research Centre, and Bjerknes Centre for Climate Research, Bergen, Norway
Zhongshi Zhang
Peking University, Beijing, China
NORCE Norwegian Research Centre, and Bjerknes Centre for Climate Research, Bergen, Norway
Nicholas Yeung
Climate Change Research Centre, University of New South Wales, Sydney, Australia
Laurie Menviel
Climate Change Research Centre, University of New South Wales, Sydney, Australia
The Australian Centre for Excellence in Antarctic Science, University of New South Wales, Sydney, Australia
Sandeep Narayanasetti
Indian Institute of Tropical Meteorology, Pune, 411008, India
Masakazu Yoshimori
Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan
Olivia Reeves
University College London, London, UK
Anni Zhao
NORCE Norwegian Research Centre, and Bjerknes Centre for Climate Research, Bergen, Norway
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Cited
Latest update: 07 Jul 2026
Short summary
The Arctic may have lost its summer sea ice 127,000 years ago during a naturally warm period in Earth’s past. Climate models can be tested by recreating those conditions, with similar sunlight and greenhouse gas levels. Analysing the large sea ice changes in these simulations helps us understand how the Arctic might respond in the near future and improves how we test and trust our climate models.
The Arctic may have lost its summer sea ice 127,000 years ago during a naturally warm period in...
Special issue