#rapidevaluationframework #cmip7modelbenchmarkingtaskteam | Climate Resource We're proud to see Jared Lewis in Japan last week helping launch something the climate community has been talking about for years. The #RapidEvaluationFramework (REF) is now live, built to track how c...

Big step for #CMIP7: the Rapid Evaluation Framework (REF) is taking shape, enabling faster, more systematic climate model evaluation for the #IPCC AR7 cycle.

We've been working hard at: Better evaluation → more transparent models → stronger decisions.

🔗 www.linkedin.com/posts/climat...

GPEX continued the momentum by bringing the community into the #CMIP7 conversation through a dedicated side event. Together with colleagues from other WCRP activities, including #ESMO and #RIfS, we set the stage with short presentations followed by an interactive town-hall discussion.

🌍🌫️ What happens to climate model results when we update historical aerosol data for CMIP7?

Read the #research article co-authored by Stephanie Fiedler, EXPECT researcher from @uniheidelberg.bsky.social, on SP forcing data for #CMIP7 and its first application in the model ICON XPP: bit.ly/4qUOl5x

building on the #CORDEX-CMIP6 framework while expanding to incorporate new model components and scientific priorities. Happy for having the possibility to play in the future a role in shaping the #CORDEX contribution to #CMIP7, 2/3

Behind every COP is a global data project that predicts Earth’s future. Here’s how it works The project collects troves of data from the best climate models around the world – and the newest update to it is now underway.

🌏 Behind every COP summit is a massive global climate modeling effort that compares Earth system models around the world: #CMIP7. Read this article by @andyhogg.bsky.social and Tilo Ziehn about how Australia is participating to help predict our planet's future.
🔗 theconversation.com/behind-every...

CMIP7 Overview and how is Australia participating on this international collaboration - ACCESS-NRI A paper published this week in Geoscientific Model Development provides an overview of the seventh phase of the Coupled Model Intercomparison Project (CMIP). This international...

We are excited to share this important overview of #CMIP7! Australia is submitting one model configuration, ACCESS-ESM1.6, for the FastTrack component of CMIP7, and mobilising a large-scale initiative of researchers from many disciplines and institutions.
🔗Paper: bit.ly/3VSzIlO
🔗More: bit.ly/42vlGu5

a man in a suit is standing in front of a blackboard that says " cardinality " ALT: a man in a suit is standing in front of a blackboard that says " cardinality "

Next week our ECR group are starting a #MachineLearning sprint to speed up development of our ice sheet smb emulators. (Part of our #CMIP7 prep)
I'm looking for hints, ideas, tips and inspiration to smoothe and accelerate the process.

1/3

CMIP Community Workshop 2026: Call for abstracts now open! - Coupled Model Intercomparison Project The call for abstracts for CMIP26 is now open! You can submit abstracts through our online system to one or more of the workshop sessions that are detailed in

📣 Call for abstracts – CMIP26 Community Workshop
@wcrp-cmip.org‬
📍 Kyoto, 9–13 March 2026
🕛 Deadline: 13 Aug 2025, 12:00 UTC

Consider submitting to our session!
Session 22 – Emission-driven ESMs for CMIP7 & beyond
🔗 wcrp-cmip.org/cmip26-call...

#CMIP7 #ESM #ClimateResearchNet

🌍 The pre-print on the new Rapid Evaluation Framework (REF) for #CMIP7 is out in open discussion on EGUsphere!

It’s a major step for rapid, reproducible ESM model benchmarking!

🔗 Read + discuss here:
bit.ly/4kWOqSK

🧠 Proud to see ESM2025 acknowledged in this collaborative effort!

#openscience

Are you interested in climate change, land use, greenhouse gases and future scenarios?

Then don't miss the Scenarios Forum 2025 🌍

Florian Humpenöder is giving a talk!
👉 scenariosforum.org

#wetlands #CMIP #CMIP7 #ScenariosForum25

Five papers about global warming rate doubling Development of the 10-year-averaged global warming rate. After a plateau of very linear warming between about 1980 and 2015, the rate significantly increased. Red: continuous fit with uncertainty r…

this should be common knowledge, i.m.h.o.
I really want to know about adaptations to digital earth system models for the upcoming #CMIP7 comparison!

remarksandobservations.wordpress.com/2025/06/16/f...

UK National Climate Science Partnership The UK’s leading climate science organisations have joined forces to develop a new national alliance focused on climate solutions for society.

The UK National Climate Science Partnership has launched it's first newsletter and is organising a webinar (8th May) for the UK climate modelling community to discuss plans for delivery of results from UK models to CMIP7. Links to details via: terrafirma.ac.uk/uk-national-... #CMIP7

A graph showing relative humidity declines over the continents developing a robust negative trend since the 2000s. In 2024 till January 2025 we had again highly negative values near record levels. The drying of continents supports exceptional high temperatures, flash droughts, higher rates of wind and water erosion (floods hitting parched out landscapes), or that dryness is the main metric for large wildfires to become possible. In other words models underestimating the drying trend of the continents do not see the collapse of the terrestrial carbon sink coming that involves lots of other knock on effects. https://climate.copernicus.eu/january-2025-warmest-january-and-lowest-arctic-sea-ice-extent-month?utm_source=socialmedia&utm_medium=bs&utm_campaign=january-2025-warmest-january-and-lowest-arctic-sea-ice-extent-month

Just for the record: this model error is massive!

Here graph showing the latest data on relative humidity over land showing that accelerating surface warming of the oceans comes with massive knock on effects...

#CMIP5 #CMIP6 #CMIP7 #IPCC #climate

PhD Research Fellow in Nonlinear Transitions in the Climate System (274579) | University of Oslo Job title: PhD Research Fellow in Nonlinear Transitions in the Climate System (274579), Employer: University of Oslo, Deadline: Friday, February 28, 2025

Ada Gjermundsen (UIO), Jean Rabault (MET NO) and I are looking for a PhD candidate to work on climate reversibility, working with NorESM - helping with the #CMIP7 effort and developing new hybrid ML climate emulation tools. www.jobbnorge.no/en/available...

Scientists’ warning to humanity: microorganisms and climate change - Nature Reviews Microbiology The microbial majority with which we share Earth often goes unnoticed despite underlying major biogeochemical cycles and food webs, thereby taking a key role in climate change. This Consensus Statemen...

The warning had been issued in 2019: "Scientists’ warning to humanity: microorganisms and climate change"; www.nature.com/articles/s41...

#climate #Earth #CMIP5 #CMIP6 #CMIP7

its just a black box that can turn into the box of Pandora...!

"This is urgently required for updating impact assessments of extreme weather on ecosystems and climate services, but also for ensuring that climate and Earth system models are fit for purpose in predicting the magnitude and frequency of extremes."Computational power the problem #CMIP5 #CIMP6 #CMIP7

Researcher on land surface model calibration | FINN.no About the positionSummary: CICERO is expanding our research on land surface modeling, which is essential to address societal questions regarding climate

We are hiring a researcher in land model calibration at @ciceroclimate.bsky.social in Oslo, Norway - developing FATES-CLM for NorESM in #CMIP7 with @rosieafisher.bsky.social . Land surface modelers and UQ/ML people, we'd love to hear from you. www.finn.no/391168589

What I wonder here is by which mechanisms can the SOx-cloud forcing be delayed by 3.5 years after cloud reductions from the IMO regulation occurred. Especially, the regional cloud effects happen in the first few months as SOx is fast removed from the lower troposphere. #CMIP5 #CMIP6 #CMIP7

Shows the sea ice decline in the different scenarios "Observationally-constrained projections of an ice-free Arctic even under a low emission scenario"; https://www.nature.com/articles/s41467-023-38511-8

Slowly model results are closing in on an Arctic sea ice free September:

"The stronger SIA declines have advanced first ice-free years to around the 2030s–50s in all SSP scenarios."

Sadly, the spread is way too large as it could happen as early as 2027-2030...

#CIMP5 #CIMP6 #CMIP7 #climate

Its a model result from the paleoclimate Modeling
Intercomparison Project phase ( #PMIP4)

This does not fit with reality or?

#CMIP5 #CMIP6 #CMIP7

"The state of the AMOC revealed from the Subpolar North Atlantic Sea Surface Salinity"

Changes in Oceanic Radiocarbon and CFCs Since the 1990s Recent trends in upper ocean Δ14C, pCFC-11, and pCFC-12 are negative, reflecting their decreasing atmospheric trends Increases in ∆14C are only observed in a few places over 2000–2010s, showing o...

If they are correct this is the most important study that was published in 2024:

Vertical mixing is already suppressed by stratification

This could then shift ocean heat uptake to shallower depths causing SSTs to accelerate...

#climate #oceans #CMIP6 #CMIP7 #IPCC #uöäü1OHU

The first ice-free day in the Arctic Ocean could occur before 2030 - Nature Communications The first day with no sea ice in the Arctic will be a visible sign of climate change. This work reveals that this could occur before 2030 already and becomes more likely as the world warms. As the ice...

This is also another one of the most important findings - messages of 2024:

"The first ice-free day in the Arctic Ocean could occur before 2030"

So many knock on effects this would mean including another acceleration of global warming in a time we truly do not need that

#climate #CMIP7 #politics

Connecting the SST Pattern Problem and the Hot Model Problem We reconcile seemingly contradicting evidences for the ability of climate models to reproduce observed surface temperature pattern trends All models fail to reproduce long-term trends but many al...

Just for the record:

"Our findings suggest that two not well understood problems of the current generation of climate models are connected and we highlight the need to increase understanding of decadal-scale variability."

#CMIP5 #CMIP6 #CMIP7 #climate #uöäü1models #IPCC

High-resolution model experiments unveil the crucial role of small-scale air–sea interactions in large-scale oceanic water mass formation Subtropical mode water (STMW) plays a crucial role in the Earth’s climate, including the oceans’ absorption of anthropogenic CO2 and heat produced by globa

Another reason why we are currently flying blind - models have real issues to simulate ocean heat uptake:

#CMIP7 #climate #uöäü1model #uöäü1OHU #OHU

Hysteresis of Northern Hemisphere permafrost to carbon dioxide emissions - IOPscienceSearch Hysteresis of Northern Hemisphere permafrost to carbon dioxide emissions, Wei, Ting, Chen, Yueli, Wang, Hui

Very important:

The permafrost regions will continue to thaw for decades after emission stop - not possible to quantify the contribution to the warming in the pipeline as too many wildcards exist...

#CMIP7 #climate #Arctic #uöäü1pipeline

The recent temperature jump is driven also by the Antarctic which is now joining the heating...

Its another indication that circulation changes - disturbances of the flow patterns - are now also driving the recent acceleration of global warming

#climate #Antarctic #CMIP7

I'm also a fan of these models that's the reason I am a hardcore critique :D #CMIP7

My opinion: Humanity needs one model that gets improved so simulate Earth, not ~140 wrong ones forced to produce the same outcomes :D

From an emergent non-linear system perspective just a mega fail...

#climate

Observationally-constrained projections of an ice-free Arctic even under a low emission scenario - Nature Communications A dominant influence of anthropogenic greenhouse gas increases on Arctic sea ice area is detectable in all months. By scaling climate models’ sea ice response to best match observed trends, an ice-fre...

And here another study - this time as early as 2030: "Observationally-constrained projections of an ice-free Arctic even under a low emission scenario"; www.nature.com/articles/s41...

Important the more recent the studies the more earlier the first ice free year is projected... #CMIP7

Emergent constraints Different global climate models give different answers about future climate. The range of answers across the different models—what climate scientists refer to as the spread—can be very large. One approach to constraining, or narrowing the range of, answers across climate models is the use of emergent constraints.

"One approach to constraining, or narrowing the range of, answers across climate models is the use of emergent constraints." dept.atmos.ucla.edu/alexhall/eme... its kind of a short cut #CMIP7

An evolving Coupled Model Intercomparison Project phase 7 (CMIP7) and Fast Track in support of future climate assessment Abstract. The vision for the Coupled Model Intercomparison Project (CMIP) is to coordinate community based efforts to answer key and timely climate science questions and facilitate delivery of relevant multi-model simulations through shared infrastructure for the benefit of the physical understanding, vulnerability, impacts and adaptations analysis, national and international climate assessments, and society at large. From its origins as a punctuated phasing of climate model intercomparison and evaluation, CMIP is now evolving through coordinated and federated planning into a more continuous climate modelling programme. The activity is supported by the design of experimental protocols, an infrastructure that supports data publication and access, and the phased delivery or “fast track” of climate information for national and international climate assessments informing decision making. Key to these CMIP7 efforts are: an expansion of the Diagnostic, Evaluation and Characterization of Klima (DECK) to include historical, effective radiative forcing, and focus on CO2-emissions-driven experiments; sustained support for community MIPs; periodic updating of historical forcings and diagnostics requests; and a collection of experiments drawn from community MIPs to support research towards the 7th Intergovernmental Panel on Climate Change Assessment Reporting cycle, or “AR7 Fast Track”, and climate services goals across prediction and projection, characterization, attribution and process understanding.

📣 CMIP7 Description Paper now available for comment on GMD 📣

Including climate science questions #CMIP7 will help to address, including model characterisation, process understanding, impacts and adaptations analysis, climate assessments; and more!

Comment now 👉 zurl.co/cmip7-paper