Presenter(s):
Elisabeth Dingley, CMIP International Project Office
Paul Durack, Lawrence Livermore Nat. Lab.
John Dunne, NOAA Geophys Fluid Dynamic
Helene Hewitt, Met Office Hadley center for Climate Change

Primary Convener:
Elisabeth Dingley, CMIP International Project Office

Over four decades, the Coupled Model Intercomparison Project (CMIP) has advanced Earth system modeling significantly, addressing a wide range of scientific questions through 24 CMIP6 MIPs. Despite successes, CMIP6 also highlighted challenges for modeling centers, data infrastructure, and users that must be addressed. To meet these needs, the CMIP Panel developed the CMIP Assessment Fast Track—an innovative component of the CMIP7 experimental design. This streamlined set of experiments, designed to meet IPCC Seventh Assessment Report (AR7) and numerous national assessment requirements, prioritizes critical simulations for climate assessment and policy, distributing project burdens on modeling centers and improving computational efficiency. As CMIP7 simulations begin in 2025, several key elements are being finalized: the DECK forcing datasets were published in April 2025, and the final CMIP Assessment Fast Track Data Request (v1.2) by May 2025. Work is underway on the Rapid Evaluation Framework (REF) to support systematic assessment of submitted simulations. This Townhall will update status: forcing datasets, Data Request, REF, and activities of the Fresh Eyes on CMIP group. We welcome the community to join, share feedback, and learn about engagement opportunities for CMIP7 and beyond. Presenters include CMIP Panel, CMIP Task Teams, and Fresh Eyes on CMIP members.

Cross-Listed:
SY - Science and Society
C - Cryosphere
A - Atmospheric Sciences
H - Hydrology
OS - Ocean Sciences
GC - Global Environmental Change

Co-Sponsored Sessions:
CGU： Canadian Geophysical Union
AMS： American Meteorological Society
EGU： European Geosciences Union
AOGS： Asia Oceania Geosciences Society