Reduced Complexity Model Intercomparison Project Phase 3: Experimental protocol for coordinated constraining and evaluation of Reduced-Complexity Models Abstract. Reduced-Complexity Models (RCMs) are a critical tool for synthesising climate science knowledge and providing climate projections for a wide range of emissions scenarios. The Reduced-Complex...

Reduced Complexity Model Intercomparison Project Phase 3 preprint: egusphere.copernicus.org/preprints/20...

In parallel to experiments run by complex climate models, we evaluate the simple climate models that are used as translations of knowledge from physical science to scenario projections

🌍Two members of our department @cjsmith.be and @harryzeko.bsky.social joined the first IPCC AR7 lead author meeting in Saint-Denis (Paris).

#IPCC #AR7 #ClimateScience #WG1 #ClimateAction

We hope this intercomparison will be useful for the whole reduced-complexity modelling community. So:

✔️ contribute feedback
✔️ help design simulations
✔️ take a supporting or leading role

Please share with colleagues who might be interested—everyone’s welcome!

We’ve drafted:

a roadmap (plans + timelines): leeds365-my.sharepoint.com/:w:/g/person...

a list of requested simulations & variables (tiered): leeds365-my.sharepoint.com/:x:/g/person...

Deadline for comments: 1 Oct

🌍📢 Calling all emulator / reduced-complexity / simple climate modelling groups!

The next round of the Reduced Complexity Model Intercomparison Project (RCMIP) is starting, and we’d love your feedback.

‘Significant’ risk of Amazon forest dieback if global warming overshoots 1.5C - Carbon Brief Even passing 1.5C of global warming temporarily would trigger a “significant” risk of Amazon forest “dieback”, says a new study.

And a @carbonbrief.org article about it too www.carbonbrief.org/significant-...

New paper on the risks of forest ecosystem impacts under emissions pathways designed to meet the Paris Agreement temperature goals is out today in Nature Climate Change! 🌳

Read it here: www.nature.com/articles/s41558-025-02327-9

Finally found @rebeccamayvarney.bsky.social a coauthor on this paper too!

A rapid-application emissions-to-impacts tool for scenario assessment: Probabilistic Regional Impacts from Model patterns and Emissions (PRIME) Abstract. Climate policies evolve quickly, and new scenarios designed around these policies are used to illustrate how they impact global mean temperatures using simple climate models (or climate emul...

Our new open access paper on the PRIME Earth System emulator for estimating regional impacts is out now: gmd.copernicus.org/articles/18/..., @njsteinert.bsky.social, @chrisd-jones .bsky.social, @cjsmith.be, @gergmunday.bsky.social, @dougmcneall.bsky.social

fair-calibrate v1.4.1: calibration, constraining, and validation of the FaIR simple climate model for reliable future climate projections Abstract. Simple climate models (also known as emulators) have re-emerged as critical tools for the analysis of climate policy. Emulators are efficient and highly parameterised, where the parameters a...

The model calibration paper for fair is now published in Geoscientific Model Development! 🎉

TLDR: how do we constrain a highly parameterised model to observational and assessed constrained ranges, with uncertainty?

gmd.copernicus.org/articles/17/...

Abstract submission is now open for EGU25. We would love to get submissions for our session on TCRE and ZEC: meetingorganizer.copernicus.org/EGU25/sessio...
Deadline 15 Jan.

Work presented can contribute to the WCRP assessment – see www.wcrp-climate.org/slc-events-o...