Reposted by Alex Romero PrietoCarbon Brief @carbonbrief.org · 01/09/2026NEW – Guest post: Why tough methane cuts are crucial for keeping warming ‘well-below’ 2C | Written by @konstantinweber.bsky.social @retoknutti.bsky.social @brunncy.bsky.social Read here: buff.ly/rd13QpI 03514
Reposted by Alex Romero PrietoPriestley Centre for Climate Futures @priestleycentre.bsky.social · 03/07/2026As part of our 10th anniversary celebrations, we recognised four outstanding members of the Priestley community Congratulations to Alex Romero Prieto, Elliott Johnson, Prof Alex Beresford & Dr Ruth Bookbinder for their impactful climate research and collaboration. climate.leeds.ac.uk/news/priestl...climate.leeds.ac.ukPriestley Centre marks 10 years with prizes celebrating collaboration and impact - Priestley Centre for Climate FuturesOn 30 June, the Priestley Centre for Climate Futures marked its 10th anniversary by celebrating outstanding contributions to climate research and impact, awarding two prestigious prizes that reflect t... 032
Alex Romero Prieto @arp-climate.bsky.social · 24/05/2026Pretty sure that's Málaga, a nearby city. Point still stands, of course, and can confirm we do the same thing in Granada (I'm from there). 100
Reposted by Alex Romero PrietoBen Sanderson @benmsanderson.bsky.social · 24/05/2026We have a new preprint this week. When CO2 emissions stop, warming in the pipeline is controlled by two big opposing effects - thermal response to energetic imbalance *and* carbon sink evolution. We assess their roles in the flat10MIP ensemble /thread/ egusphere.copernicus.org/preprints/20...egusphere.copernicus.orgDecomposition of the Zero Emissions Commitment into thermal warming pipeline and carbon buffering componentsAbstract. The Zero Emissions Commitment (ZEC), the residual warming after anthropogenic CO2 emissions cease, remains poorly constrained and directly affects remaining carbon budget calculations. We fi... 2146
Alex Romero Prieto @arp-climate.bsky.social · 09/05/2026Looks cool, Ben, very useful! Is this on the REF people radar? it may be of interest to them if they don't already have something similar? (Not an ESM guy really, so not sure what diagnostics they've already implemented and how they do it) 000
Alex Romero Prieto @arp-climate.bsky.social · 03/05/2026Just arriving in Vienna for #EGU! If you’d like to chat about RCMIP, come by my poster on Thursday at 14:00 (session NP1.2 in Hall X4). Or just stop by to say hi! 000
Reposted by Alex Romero PrietoPriestley Centre for Climate Futures @priestleycentre.bsky.social · 29/04/2026Yesterday, Piers Forster presented Defining National Fossil Fuel Phase Out Roadmaps: A Colombian Case Study at a side event at TAFF in Santa Marta. Key to the roadmap was the work of Priestley researchers Elliott Johnson and Alejandro Romero Prieto. Here's Alejandro's thoughts on the conference. 033
Reposted by Alex Romero PrietoPriestley Centre for Climate Futures @priestleycentre.bsky.social · 28/04/2026It's day 5 of the Transitioning Away from Fossil Fuels Conference in Colombia. Today at 10–11, Colombia Time, Priestley will host a side event on the Fossil Fuel Phase Out Roadmap followed by a discussion. www.eventbrite.co.uk/e/a-roadmap-...eventbrite.co.ukA Roadmap for fossil fuel phase-out in ColombiaThis side event will present a fossil fuel phase-out roadmap for Colombia, followed by a discussion on how to make it deliverable 062
Reposted by Alex Romero PrietoPriestley Centre for Climate Futures @priestleycentre.bsky.social · 27/04/2026At the Transitioning Away from Fossil Fuels Conference, Prof Piers Forster launched a draft national roadmap for fossil fuel phase-out: a Colombia-based, collaborative and science-led case study, demonstrating how roadmaps can support a just transition www.youtube.com/watch?v=Txuu...youtube.comDefining National Fossil Fuel Phase Out Roadmaps: A Colombian Case StudyYouTube video by Priestley Centre for Climate Futures 143
Alex Romero Prieto @arp-climate.bsky.social · 25/04/2026Also, great to see our work covered in The Guardian today! www.theguardian.com/environment/...theguardian.comNew global panel aims to accelerate move away from fossil fuelsScientists and economists will help countries develop plans to reduce dependence on oil, gas and coal 000
Alex Romero Prieto @arp-climate.bsky.social · 25/04/2026The conversations happening at TAFF feel especially important right now. The focus has to shift from targets to implementation. We know what needs to be done. Now it’s about how to do it. Country-led, practical strategies are essential to turn ambition into real-world action. 110
Alex Romero Prieto @arp-climate.bsky.social · 25/04/2026Grateful to be part of this collaboration and to help shape Colombia’s fossil fuel phase-out roadmap with such a strong group of colleagues. #ClimateAction #FossilFuelPhaseOut #EnergyTransition #SantaMarta #TransitioningAwayFromFossilFuels 110
Reposted by Alex Romero PrietoPriestley Centre for Climate Futures @priestleycentre.bsky.social · 24/04/2026We're excited to announce that Priestley Centre Director, Piers Forster, is speaking at the Transitioning Away from Fossil Fuels Conference in Colombia. 18:00 Colombia time today, he’ll present the draft national roadmap for fossil fuel phase-out in Colombia. #TAFF #ClimateScience #EnergyTransition 032
Reposted by Alex Romero PrietoYasser Haddad @yasserhaddad.bsky.social · 07/04/2026Had the opportunity to talk a bit about my PhD journey to PLOS Climate! Check the blog entry below 😁 053
Alex Romero Prieto @arp-climate.bsky.social · 29/03/2026Friendly reminder: only a few days remain to submit your model output for the next RCMIP round. If you’d like to participate but the deadline is… rapidly approaching, do get in touch. We can likely be flexible and accommodate slightly later submissions. 011
Reposted by Alex Romero PrietoJohn Bistline @bistline.bsky.social · 24/03/2026Wild figures in two decades of EIA retrospective data. Solar getting it wrong gets all the airplay. But the consistent underestimation of natural gas exports and the speed of coal's collapse are just as striking, even at 3-5 year horizons. 14318
Reposted by Alex Romero PrietoKonstantin Weber @konstantinweber.bsky.social · 13/02/2026National carbon budgets are smaller than commonly assumed because scientists and countries count CO₂ differently. Our new study in Nature Communications corrects for this and finds that the 1.5 °C budget shrinks by ~50%, the 2 °C budget by ~20%. Paper + data: www.nature.com/articles/s41... Thread 👇nature.comTracking country-level mitigation progress using NGHGI-consistent carbon budgets - Nature CommunicationsThis study shows that aligning remaining carbon budgets with national greenhouse gas inventory accounting reduces the global 1.5 ∘C (50%) budget by ~100 GtCO2, with possible depletion around 202... 131
Alex Romero Prieto @arp-climate.bsky.social · 06/02/2026Public discussion on the RCMIP3 protocol paper has now been opened! Do send us your thoughts if you have any ideas on how we could make the intercomparison better! 012
Reposted by Alex Romero Prietochriswells95.bsky.social @chriswells95.bsky.social · 02/02/2026New paper in ERL in which we study the effect of a long-known issue in climate emulators: that we typically calibrate them on only 150 years of 4xCO2 ESM runs. This a problem as we know the climate isn't in equilibrium after this time, but running ESMs is 1/N iopscience.iop.org/article/10.1... 162
Reposted by Alex Romero PrietoRebecca Varney @rebeccamayvarney.bsky.social · 29/01/2026Excited to convene the upcoming EGU webinar on "Mental Health in Academia: Obstacles, Advocacy and Inclusion" on 9 February at 16:00 CET. Open to all. 👉 Register here: www.egu.eu/webinars/694... @egu.eu @egubg.bsky.social @anabastos.bsky.social @elsa-abs.bsky.social 2158
Reposted by Alex Romero PrietoBen Sanderson @benmsanderson.bsky.social · 15/01/2026Preprint out today in ESDD. SRM's biggest risk is us. 'Peak-shaving' is a best-case scenario, with strong governance and international cooperation. We propose a framework for messier geoengineering futures, which look more like, you know, the news. /1 egusphere.copernicus.org/preprints/20...egusphere.copernicus.orgRobust assessment of Solar Radiation Modification risks and uncertainties must include shocks and societal feedbacksAbstract. Conventional climate scenarios omit fast-timescale human-system dynamics like policy rollback or economic shocks. The climate system's slow response to GHG emissions allows these `fast' ter... 12011
Alex Romero Prieto @arp-climate.bsky.social · 12/01/2026Grateful to my co-authors & supervisors (Chris Smith, Camilla Mathison, Piers Forster), and to the SCM developers who sanity-checked my understanding 😅 020
Alex Romero Prieto @arp-climate.bsky.social · 12/01/2026Simple Climate Models (SCMs) are central to climate science & policy, but their diversity makes comparison difficult. In this review we: • summarise core SCM principles • trace genealogy & design choices • compare all 14 SCMs from previous RCMIP phases 120
Alex Romero Prieto @arp-climate.bsky.social · 12/01/2026🎉 My first publication is out in Geoscientific Model Development! 📝 “Review of climate simulation by Simple Climate Models” ⭐ Selected as a GMD Highlight Article Link: doi.org/10.5194/gmd-...doi.orgReview of climate simulation by Simple Climate ModelsAbstract. Simple Climate Models (SCMs) are a key tool in climate research, enabling the rapid exploration of climate responses beyond the reach of more complex models and aiding in the estimation of f... 1184
Alex Romero Prieto @arp-climate.bsky.social · 12/01/2026🌍 Working on climate model emulation or impact projections? ➡️ Abstracts are still open for our EGU 2026 session “Advances in climate change emulation for impact projections” (#CL3.2.7) SCMs, ML, emulator evaluations, impacts & more welcome. 🔗 Session info + link: www.egu26.eu/session/56612 #EGU26egu26.euSession CL3.2.7 021
Alex Romero Prieto @arp-climate.bsky.social · 28/11/2025Feel free to share with colleagues, or tag people who might be interested. Hope to see many of you in Vienna! 010
Alex Romero Prieto @arp-climate.bsky.social · 28/11/2025If your research touches on climate model emulation or its applications to impacts (water, agriculture, energy, ecosystems, etc.), we’d love to hear from you. 📩 Abstract submissions are open. 🔗 Session info + link: www.egu26.eu/session/56612egu26.euSession CL3.2.7 110
Alex Romero Prieto @arp-climate.bsky.social · 28/11/2025The session is CL3.2.7: Advances in climate change emulation for impact projections. We’re bringing together work on climate emulators of all kinds: • simple climate models • statistical / ML / hybrid approaches • pattern scaling • emulator comparison + evaluation • real-world impact studies 110
Alex Romero Prieto @arp-climate.bsky.social · 28/11/2025Excited to share that I’ll be co-convening a session at EGU 2026 — and we’re now open for abstracts! 🌍✨ 120
Alex Romero Prieto @arp-climate.bsky.social · 24/11/2025Thanks for the feedback. I have updated the website with a note explicitely saying that any feedback can be submitted to me directly until the discussion is open in GMD. 110
Alex Romero Prieto @arp-climate.bsky.social · 23/11/2025This means the EGUsphere discussion is closed (permanently) and we will have to wait until the GMD discussion opens to have a formal place to do that (which might take while...). In the meantime, feel free to send any feedback directly to me. 110
Alex Romero Prieto @arp-climate.bsky.social · 23/11/2025This is an annoying consequence of the route we have taken to get the pre-print out. We first submitted the draft to EGUsphere in order to get the pre-print (so any modelling team can access the document), and then submitted the pre-print to GMD for peer-review publication. 110
Alex Romero Prieto @arp-climate.bsky.social · 23/11/2025We’re excited to open RCMIP3 to the community and to see the science that will grow from it. If you work with RCMs/SCMs or IAM-linked climate components, we’d love to have you involved! 110
Alex Romero Prieto @arp-climate.bsky.social · 23/11/2025Huge thank you to everyone who contributed feedback during development, and to the fantastic team that made this possible! 🙌 🧊 RCMIP website: www.rcmip.orglnkd.inLinkedInThis link will take you to a page that’s not on LinkedIn 110
Alex Romero Prieto @arp-climate.bsky.social · 23/11/2025We place particular emphasis on overshoot behaviour, climate reversibility, and the dynamics of net-zero and negative-emissions pathways — enabling the most comprehensive assessment yet of how RCMs represent carbon-climate feedbacks and long-term response. 110
Alex Romero Prieto @arp-climate.bsky.social · 23/11/2025This protocol is the result of a big community effort to coordinate how reduced-complexity / simple climate models are benchmarked, constrained, and evaluated for the IPCC AR7 cycle. It introduces expanded idealised + scenario experiments, strong carbon-cycle focus, and alignment with CMIP7. 121
Alex Romero Prieto @arp-climate.bsky.social · 23/11/2025✨ New preprint out! ✨ Really happy to share that our manuscript “Reduced Complexity Model Intercomparison Project Phase 3: Experimental protocol for coordinated constraining and evaluation of Reduced-Complexity Models” is now available as a preprint on EGUsphere 🔗 Preprint: doi.org/10.5194/egus...lnkd.inLinkedInThis link will take you to a page that’s not on LinkedIn 132
Reposted by Alex Romero Prietochriswells95.bsky.social @chriswells95.bsky.social · 06/11/2025Newly published: an overview of FRIDAv2.1, a new IAM to model the coupled human-Earth system (including climate impacts!) gmd.copernicus.org/articles/18/... 151
Reposted by Alex Romero PrietoNorman J. Steinert @njsteinert.bsky.social · 14/10/2025OUT NOW: Global Tipping Points Report 2025 global-tipping-points.org Our chapter on the "Implications of overshooting 1.5°C for Earth system tipping points" is based on an associated paper: doi.org/10.31223/X52... Minimizing climate overshoot is essential to prevent climate tipping points. 1136
Alex Romero Prieto @arp-climate.bsky.social · 26/09/2025Only a few days left to send us your feedback about our plans to run the upcoming RCMIP phase! 000
Alex Romero Prieto @arp-climate.bsky.social · 10/09/2025We 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! 011
Alex Romero Prieto @arp-climate.bsky.social · 10/09/2025We’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 Octleeds365-my.sharepoint.comSign in to your account 111
Alex Romero Prieto @arp-climate.bsky.social · 10/09/2025We are hoping to IPCC AR7 with this exercise, which will include a new intercomparison of SCM carbon cycles. We are also very open to the community driving intercomparisons of other model cliamate processes, so do get in touch if you would like to join this effort. 100
Alex Romero Prieto @arp-climate.bsky.social · 10/09/2025🌍📢 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. 153
Reposted by Alex Romero PrietoMatthew Gidden @gidden.bsky.social · 04/09/2025Our paper is out today in @nature.com where we assess a Prudent Planetary Limit for Geologic Carbon Storage: www.nature.com/articles/s41...nature.comA prudent planetary limit for geologic carbon storage - NatureA risk-based, spatially explicit analysis of carbon storage in sedimentary basins establishes a prudent planetary limit of around 1,460 Gt of geological carbon storage, which requires making explicit ... 76924
Alex Romero Prieto @arp-climate.bsky.social · 12/08/2025I reviewed all 14 SCMs participating in at least one of the two rounds of RCMIP, summarising their development history and internal structure. Essentially, it is the document i would have liked to have at the start of my PhD when I needed to get up-to-speed with climate emulation by SCMs. 000
Alex Romero Prieto @arp-climate.bsky.social · 12/08/2025The pre-print for my review of simple climate models (SCMs) is out! This is a deep dive on how SCMs actually simulate climate, looking at the different steps in the emissions-temperature causal chain. You can find it here: egusphere.copernicus.org/preprints/20...egusphere.copernicus.orgEGUsphere - Review of climate simulation by simple climate models 100
Alex Romero Prieto @arp-climate.bsky.social · 03/08/2025Interesting read. It reminded me of the arguments that Gary Stevenson has been making for a while, namely that the current economic system, particualrly the tax system, is engineered to exacerbate those inequalities. A wealth tax seems the most obvious answer. youtu.be/0quhLtBXijM?...youtu.beGary Stevenson on taxing the rich and why you're getting poorer | WTCTW podcastYouTube video by Channel 4 News 000
Alex Romero Prieto @arp-climate.bsky.social · 15/07/2025Excited for the conference tomorrow in my home city. If you are also attending and want to meet drop me a message, happy to chat between sessions! 010
Alex Romero Prieto @arp-climate.bsky.social · 29/06/2025Currently travelling to Manchester for the Royal meteorological society early careers and student conference, where I will be chairing the session on extreme weather events as part of the organising committee. Do say hi if you are around! 000
