Articles | Volume 18, issue 19
https://doi.org/10.5194/gmd-18-6671-2025
© Author(s) 2025. 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-18-6671-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
An evolving Coupled Model Intercomparison Project phase 7 (CMIP7) and Fast Track in support of future climate assessment
John P. Dunne
CORRESPONDING AUTHOR
NOAA/OAR/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, USA
Helene T. Hewitt
Met Office Hadley Centre, Exeter, UK
Julie M. Arblaster
School of Earth, Atmosphere and Environment, Monash University, Monash, Australia
Frédéric Bonou
Laboratory of Physics and Applications (LPA), National University of Sciences, Technology, Engineering and Mathematics of Abomey (UNSTIM), Abomey, Benin
Olivier Boucher
Institut Pierre-Simon Laplace, Sorbonne Université/CNRS, Paris, France
Tereza Cavazos
Center for Scientific Research and Higher Education of Ensenada (CICESE), Ensenada, Baja California, Mexico
Beth Dingley
CMIP International Project Office, ECSAT, Harwell Science & Innovation Campus, Didcot, UK
Paul J. Durack
PCMDI, Lawrence Livermore National Laboratory, Livermore, CA, USA
Birgit Hassler
Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany
Martin Juckes
Department of Physics, University of Oxford, and UKRI STFC, Oxford, UK
Tomoki Miyakawa
Atmosphere and Ocean Research Institute, the University of Tokyo, Kashiwa, Japan
Matt Mizielinski
Met Office Hadley Centre, Exeter, UK
Vaishali Naik
NOAA/OAR/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, USA
Zebedee Nicholls
Climate Resource, Berlin, Germany
Energy, Climate and Environment Program, International Institute for Applied Systems Analysis (IIASA), 2361 Laxenburg, Austria
School of Geography, Earth and Atmospheric Sciences, the University of Melbourne, Melbourne, Victoria, Australia
Eleanor O'Rourke
CMIP International Project Office, ECSAT, Harwell Science & Innovation Campus, Didcot, UK
Robert Pincus
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
Benjamin M. Sanderson
CICERO, Oslo, Norway
Isla R. Simpson
NSF National Center for Atmospheric Research, Boulder, Colorado, USA
Karl E. Taylor
PCMDI, Lawrence Livermore National Laboratory, Livermore, CA, USA
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27 citations as recorded by crossref.
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- The Fire Modeling Intercomparison Project (FireMIP) for CMIP7 F. Li et al. https://doi.org/10.5194/gmd-19-3989-2026
- CMIP7 data request: Earth system priorities and opportunities M. McPartland et al. https://doi.org/10.5194/gmd-19-2849-2026
- A statistical-dynamical method for projecting temperature across multiple SSPs from a limited subset: A CMIP6 case study X. XIE et al. https://doi.org/10.1016/j.accre.2026.06.030
- CMIP7 data request: land and land ice priorities and opportunities Y. Li et al. https://doi.org/10.5194/gmd-19-3129-2026
- Standardising the “Gregory method” for calculating equilibrium climate sensitivity A. Zehrung et al. https://doi.org/10.5194/gmd-18-9433-2025
- Synthesis of data products for ocean carbonate chemistry L. Jiang et al. https://doi.org/10.5194/essd-18-1405-2026
- Comparative Evaluation of CMIP5 and CMIP6 GCMs in Reproducing Regional Precipitation Climatology in Mexico A. Ordoñez-Sánchez et al. https://doi.org/10.3390/cli14060117
- CMIP7 data request: ocean and sea ice priorities and opportunities B. Fox-Kemper et al. https://doi.org/10.5194/gmd-19-6043-2026
- METEORv1.0.1: a novel framework for emulating multi-timescale regional climate responses M. Sandstad et al. https://doi.org/10.5194/gmd-18-8269-2025
- New framework for benchmarking decadal predictions leveraging the PCMDI Metric Package with interactive visualization J. Choi et al. https://doi.org/10.5194/gmd-19-6189-2026
- The importance of recognizing opportunities in climate change impacts T. Carter https://doi.org/10.1038/s41558-026-02626-9
- Trajectories of climate scenarios: historical foundations and emerging trends B. Su et al. https://doi.org/10.1016/j.scib.2026.04.053
- Evaluation and selection of future meteorological years for building performance simulations in Europe T. Thiis et al. https://doi.org/10.1080/19401493.2026.2697216
- AerChemMIP2 – unraveling the role of reactive gases, aerosol particles, and land use for air quality and climate change in CMIP7 S. Fiedler et al. https://doi.org/10.5194/gmd-19-3477-2026
- A sea ice free Arctic: CMIP7 Assessment Fast Track abrupt-127k experimental protocol and motivation L. Sime et al. https://doi.org/10.5194/gmd-19-5881-2026
- Datasets and protocols for including anomalous freshwater from melting ice sheets in climate simulations G. Schmidt et al. https://doi.org/10.5194/gmd-18-8333-2025
- The ICON-based Earth System Model for climate predictions and projections (ICON XPP v1.0) W. Müller et al. https://doi.org/10.5194/gmd-18-9385-2025
- The Destination Earth digital twin for climate change adaptation F. Doblas-Reyes et al. https://doi.org/10.5194/gmd-19-2821-2026
- Investigating future Komodo dragon habitat alteration in the human-dominated landscape A. Yudistira et al. https://doi.org/10.5141/jee.25.064
- Global monsoon in ICON: the scale-dependent response of Northern Hemisphere monsoons P. Pothapakula et al. https://doi.org/10.5194/wcd-7-979-2026
- Long run emulator calibration increases warming and sea-level rise projections C. Wells et al. https://doi.org/10.1088/1748-9326/ae3847
- CMIP7 Data Request: atmosphere priorities and opportunities B. Dingley et al. https://doi.org/10.5194/gmd-19-2945-2026
- The Radiative Forcing Model Intercomparison Project (RFMIP2.0) for CMIP7 R. Kramer et al. https://doi.org/10.5194/gmd-19-4447-2026
- Stratospheric aerosol forcing for CMIP7 – Part 1: optical properties for pre-industrial, historical, and scenario simulations T. Aubry et al. https://doi.org/10.5194/gmd-19-3725-2026
- Research on the layout of atmospheric science funding system J. Sun et al. https://doi.org/10.1360/CSB-2025-5152
- CMIP7 data request: impacts and adaptation priorities and opportunities A. Ruane et al. https://doi.org/10.5194/gmd-18-9497-2025
27 citations as recorded by crossref.
- DeepMIP-Eocene-p2: Experimental design for Phase 2 of the early Eocene component of the CMIP7/PMIP7 Deep-time Model Intercomparison Project (DeepMIP-Eocene) D. Lunt et al. https://doi.org/10.5194/gmd-19-6143-2026
- The Fire Modeling Intercomparison Project (FireMIP) for CMIP7 F. Li et al. https://doi.org/10.5194/gmd-19-3989-2026
- CMIP7 data request: Earth system priorities and opportunities M. McPartland et al. https://doi.org/10.5194/gmd-19-2849-2026
- A statistical-dynamical method for projecting temperature across multiple SSPs from a limited subset: A CMIP6 case study X. XIE et al. https://doi.org/10.1016/j.accre.2026.06.030
- CMIP7 data request: land and land ice priorities and opportunities Y. Li et al. https://doi.org/10.5194/gmd-19-3129-2026
- Standardising the “Gregory method” for calculating equilibrium climate sensitivity A. Zehrung et al. https://doi.org/10.5194/gmd-18-9433-2025
- Synthesis of data products for ocean carbonate chemistry L. Jiang et al. https://doi.org/10.5194/essd-18-1405-2026
- Comparative Evaluation of CMIP5 and CMIP6 GCMs in Reproducing Regional Precipitation Climatology in Mexico A. Ordoñez-Sánchez et al. https://doi.org/10.3390/cli14060117
- CMIP7 data request: ocean and sea ice priorities and opportunities B. Fox-Kemper et al. https://doi.org/10.5194/gmd-19-6043-2026
- METEORv1.0.1: a novel framework for emulating multi-timescale regional climate responses M. Sandstad et al. https://doi.org/10.5194/gmd-18-8269-2025
- New framework for benchmarking decadal predictions leveraging the PCMDI Metric Package with interactive visualization J. Choi et al. https://doi.org/10.5194/gmd-19-6189-2026
- The importance of recognizing opportunities in climate change impacts T. Carter https://doi.org/10.1038/s41558-026-02626-9
- Trajectories of climate scenarios: historical foundations and emerging trends B. Su et al. https://doi.org/10.1016/j.scib.2026.04.053
- Evaluation and selection of future meteorological years for building performance simulations in Europe T. Thiis et al. https://doi.org/10.1080/19401493.2026.2697216
- AerChemMIP2 – unraveling the role of reactive gases, aerosol particles, and land use for air quality and climate change in CMIP7 S. Fiedler et al. https://doi.org/10.5194/gmd-19-3477-2026
- A sea ice free Arctic: CMIP7 Assessment Fast Track abrupt-127k experimental protocol and motivation L. Sime et al. https://doi.org/10.5194/gmd-19-5881-2026
- Datasets and protocols for including anomalous freshwater from melting ice sheets in climate simulations G. Schmidt et al. https://doi.org/10.5194/gmd-18-8333-2025
- The ICON-based Earth System Model for climate predictions and projections (ICON XPP v1.0) W. Müller et al. https://doi.org/10.5194/gmd-18-9385-2025
- The Destination Earth digital twin for climate change adaptation F. Doblas-Reyes et al. https://doi.org/10.5194/gmd-19-2821-2026
- Investigating future Komodo dragon habitat alteration in the human-dominated landscape A. Yudistira et al. https://doi.org/10.5141/jee.25.064
- Global monsoon in ICON: the scale-dependent response of Northern Hemisphere monsoons P. Pothapakula et al. https://doi.org/10.5194/wcd-7-979-2026
- Long run emulator calibration increases warming and sea-level rise projections C. Wells et al. https://doi.org/10.1088/1748-9326/ae3847
- CMIP7 Data Request: atmosphere priorities and opportunities B. Dingley et al. https://doi.org/10.5194/gmd-19-2945-2026
- The Radiative Forcing Model Intercomparison Project (RFMIP2.0) for CMIP7 R. Kramer et al. https://doi.org/10.5194/gmd-19-4447-2026
- Stratospheric aerosol forcing for CMIP7 – Part 1: optical properties for pre-industrial, historical, and scenario simulations T. Aubry et al. https://doi.org/10.5194/gmd-19-3725-2026
- Research on the layout of atmospheric science funding system J. Sun et al. https://doi.org/10.1360/CSB-2025-5152
- CMIP7 data request: impacts and adaptation priorities and opportunities A. Ruane et al. https://doi.org/10.5194/gmd-18-9497-2025
Saved (final revised paper)
Latest update: 20 Jul 2026
Editorial statement
The Coupled Model Intercomparison Project lies at the core of global climate prediction. This paper details the Coupled Model Intercomparison Project phase 7 (CMIP7) and its Fast Track initiative. By transitioning into a continuous climate modeling program with enhanced coordination and federated planning, CMIP7 aims to address key climate questions more effectively. The expansion of the Diagnostic, Evaluation, and Characterization of Klima (DECK) experiments—including the addition of historical simulations, effective radiative forcing assessments, and CO₂-emissions-driven experiments—strengthens the foundation for climate model evaluation and projection. Additionally, the AR7 Fast Track ensures timely delivery of critical climate simulation data to support the upcoming 7th Intergovernmental Panel on Climate Change Assessment Report. This paper highlights how these advancements in experimental protocols and infrastructure support not only scientific understanding but also inform policy-making and climate services, ultimately contributing to global efforts in climate adaptation and mitigation.
The Coupled Model Intercomparison Project lies at the core of global climate prediction. This...
Short summary
The seventh phase of the Coupled Model Intercomparison Project (CMIP7) coordinates efforts to answer key and timely climate science questions and facilitate delivery of relevant multi-model simulations for prediction and projection; characterization, attribution, and process understanding; and vulnerability, impact, and adaptation analysis. Key to the CMIP7 design are the mandatory Diagnostic, Evaluation and Characterization of Klima and optional Assessment Fast Track experiments.
The seventh phase of the Coupled Model Intercomparison Project (CMIP7) coordinates efforts to...
Special issue