Yona Silvy

Ce vendredi 14 novembre, je présenterai aux côtés de Robert Vautard le processus et les enjeux du 7ème cycle d'évaluation du GIEC pour le groupe de travail I, lors du webinaire mensuel @traccsformation.bsky.social.
➡️ De 11h à 12h, les infos ici : pepr-traccs.fr/ressources/w...

63rd Session of the IPCC (IPCC-63) The IPCC will consider an outline and workplan for production of the Methodology Report on Carbon Dioxide Removal Technologies and Carbon Capture Utilization and Storage, among other agenda items.

With significant work remaining, #IPCC63 is working to identify a path to consensus on critical issues for #AR7. ENB is covering this closed session with photos and brief overviews of proceedings; our summary and analysis will be available Monday. enb.iisd.org/intergovernm...

Ambassador Hugo de Zela, Minister of Foreign Affairs, Peru, address IPCC 63

IPCC 63 sign

Opening session group photo

Two years into its seventh assessment cycle, @ipcc.bsky.social has yet to reach agreement on a timeline for delivery of products that will make up its Assessment Report

With selection of lead authors complete, deciding on the timeline is critical

Read ➡️ enb.iisd.org/intergovernm...

#IPCC63

📣 Attention: Early-career researchers from developing countries & countries in transition!

Are you interested in becoming a Chapter Scientist and supporting author teams for #IPCC’s Seventh Assessment Report?

Apply by 18 Oct 2025

🔗 www.ipcc.ch/2025/10/07/c...

Polar geoengineering: risks and realities | Frontiers in Science YouTube video by Frontiers

Géo-ingénérie polaire : de quoi s'agit-il?

Quelle évaluation critique des concepts proposés?

www.youtube.com/watch?si=J7Y...

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🚂 Sauvons les trains de nuit Paris-Berlin et Paris-Vienne Signez la pétition maintenant !

🚂 A peine lancés et déjà supprimés ? Sauvons les trains de nuit Paris-Berlin et Paris-Vienne, un voyage bas-carbone largement plébiscité par ses utilisateurs
agir.greenvoice.fr/petitions/sa...

❓Have you registered for the #ClimateCoffee on Ocean Heat Content (OHC), which is a key indicator of climate change?

✅No worries if you haven't, Register here:
www.eventbrite.dk/e/...

@MAIAresilience


👥See you on 22 May 2025 | 10:00 - 10:45 CEST

Registration for experts interested in serving as Expert Reviewers and providing scientific comments on the First Order Draft of the Special Report on Climate Change and Cities is now open!

Register here: apps.ipcc.ch/comments/src...
⚠️ Registration closes 30 Nov2025

🔗 www.ipcc.ch/2025/09/17/p...

Do you think climate science needs to be better communicated? We do too! That's why we are looking for a climate science communication specialist to join the Technical Support Unit of the IPCC Working Group I.
All details can be found here: www.ipcc.ch/2025/09/17/c...
Please share!

🚨 📢 #LesActusIPSL
"Accélération des bouleversements en Antarctique : une convergence de signaux alarmants"
tinyurl.com/ye7eynjv
Jean-Baptiste Sallée
#LOCEAN_IPSL
@cnrs.fr I @sorbonne-universite.fr I @ird-fr.bsky.social I @mnhn.fr

Hot off the press: We can provide for the first time a systematic attribution of recent #heatwaves to the emissions of #carbon_majors. Essential new #Nature article coordinated by @yannquilcaille.bsky.social at @ethz.ch, with numerous contributors @usyseth.bsky.social:
www.nature.com/articles/s41...

If you want to get your simple climate model picked up by IPCC AR7, see below 👇

We have 11 on our radar from the previous round of RCMIP (egusphere.copernicus.org/preprints/20...), plus a few others we found since.

Anybody we don't know about please ping me or Alex

New starter pack with @ipcc.bsky.social #AR7 scientists (bureau, authors, REs)! Full list: apps.ipcc.ch/report/autho...
For SR cities scientists see separate starter pack!
@dianaurge.bsky.social @sherilee.bsky.social @siir-kilkis.bsky.social @janfuglestvedt.bsky.social
go.bsky.app/2FuXb3Y

Thanks Alessandro, noted!

Have you been selected as an Author for the IPCC AR7 and are you planning to attend the Ocean Sciences Meeting 2026?

Please get in touch! I am convening an IPCC-focused Town Hall and will invite a panel of Authors to address the scientific challenges for AR7 and answer questions from the community

The list of selected authors for the IPCC AR7 is now public 🌍 apps.ipcc.ch/report/autho...

It is an honour to have recently joined the Technical Support Unit of the IPCC Working Group I as Science Coordinator. Looking forward to authors coming onboard and the report to come to life!

The website www.globalchange.gov, which hosted the federally mandated US Global Change Research Program and all the National Climate Assessment reports and data, has been deleted.

The Nazis burned books, attacked universities, and crippled German science.
The MAGAs delete websites, attack universities, and cripple American science.

The website www.globalchange.gov of the mandated Global Change Research Program & all the National Climate Assessment reports has been deleted.

There’s so much happening right now, I thought I’d put together a running thread on the dismantling of #climate and research and knowledge infrastructure in the United States 🧵

De Aphatie à Plenel, en passant par Rousseau, l’abécédaire des woke français De l’historien Patrick Boucheron à la députée Sandrine Rousseau, en passant par l’ex-footballeur Lilian Thuram ou encore le Prix Nobel de littérature Annie Ernaux, panorama des personnalités qui incar...

La période de maccarthysme s'ouvre donc officiellement par un article d'un journal national historique, qui dresse une liste d'intellectuels "woke".

L'état de déliquescence morale et politique de ce pays est effrayant...

www.lefigaro.fr/actualite-fr...

Okay I lied about the cookies but you might get some food for your brain 🤓

#EGU25
🌊 Come have a chat now and before 4pm at X4.37, I have cookies!

🗣Additionally I now have a last-minute talk at 17:43 today in room 1.34 in the same session

Looking forward to the many great sessions and discussions this coming week! 🤓🌊🌡🍻

2. A poster on the ocean heat redistribution response to long temperature stabilization simulations at different global warming levels —> Thursday 14:00-15:45 X4.37 in OS1.13 (ocean carbon/heat session) meetingorganizer.copernicus.org/EGU25/EGU25-...

In the train to Vienna for #EGU25, first international conference since maternity leave! I will present:

1. AERA-MIP results on emission pathways and budgets compatible with 1.5 and 2C global warming —> Tuesday at 14:05 in CL4.13 (TCRE/ZEC session) meetingorganizer.copernicus.org/EGU25/EGU25-...

Atmospheric CO2 has passed 430 parts per million.

The last time atmospheric CO2 was at 430 ppm was during the ancient Pliocene Era, three to five million years ago, and humans didn’t exist.

🚨 Climate experts wanted!

The new U.S. Academic Alliance for the #IPCC (@ipcc.bsky.social), hosted by #AGU, is accepting nominations for the Seventh Assessment Report.

📅 Deadline: April 4
🌍 Apply now: www.agu.org/ipcc-nominat...

Join a global effort to advance #climatescience & action!

Argo est un programme international qui coordonne la collecte des informations à l'intérieur de l'océan à l'aide d'une flotte d'instruments robotisés. Ces instruments, les flotteurs profileurs, dérivent avec les courants océaniques et se déplacent à la verticale entre la surface et 2000m, 4000m ou le fond des océans. Les données recueillies par Argo décrivent la température et la salinité de l'eau et certains flotteurs mesurent d'autres propriétés qui décrivent la biologie/chimie de l'océan. Le réseau de flotteurs travaille en partenariat avec les satellites d'observation de la Terre, Jason, qui mesurent la forme de la surface de l'océan. Chaque profileur Argo est mis à l'eau depuis un navire. Une fois dans l’eau, le flotteur descend pour se stabiliser vers 1km de profondeur. Dix jours plus tard, le flotteur descend jusqu'à 2, 4 ou 6km de profondeur, puis remonte à la surface. Lors de son ascension vers la surface, les capteurs embarqués s’activent et mesurent les propriétés de l'océan. Arrivé en surface, le flotteur transmet, via des satellites, les données et sa position à des stations de réception à terre. Le flotteur coule ensuite à nouveau pour répéter le cycle de 10 jours jusqu'à ce que ses batteries soient épuisées.

Bonjour,

Connaissez-vous le réseau de profileurs Argo?

C'est une clé de voûte de l'observation de l'océan.

www.argo-france.fr/Argo-France/...

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📢 Postdoc Opportunity: Ocean Tipping Points & Impacts!

We're hiring a postdoc in my group at the University of Bern, Switzerland, to study ocean tipping points and their impacts. The position is part of HEurope project TipESM (@tipesm.bsky.social). Feel free to reach out with any questions. 🌊

Dear all, The Stand Up For Science movement has gained exceptional momentum in France. This Friday, March 7, we will have the opportunity to collectively express our solidarity with scientists and academics working in the United States, Argentina, and all countries where academic freedom is under threat. We hope to bring them strength as they wake up to see that mobilization is already widespread here, with around fifty events taking place in thirty cities. Tomorrow’s marches and rallies will also be an opportunity to stand together against the threats facing public research and universities here as well. Stand Up For Science was born from the momentum of the scientists and citizens who joined it. It is now up to us to turn it into a lasting movement in the weeks ahead. There is much to be done: welcoming scientists and academics forced into exile, securing scientific data and results, driving the necessary changes to confront democratic, social, climate, ecological, and health crises, and lifting knowledge-producing and knowledge-sharing institutions out of financial distress. On March 7, let us rise for science—and then, let us remain standing.

‪In solidarity with scientists and academics working in the United States, Argentina, and all countries where academic freedom is under threat.
Today, French scientists and citizens rally in more that 30 cities #StandUpForScience
@standupforscience.bsky.social
@cdelawalla.bsky.social

🌍🌡️Les politiques #Climat visant la #NeutralitéCarbone sont des politiques de #SantéPublique.
⚕️💰Leurs bénéfices peuvent même contrebalancer les coûts de leur mise en œuvre.
📜🧪 c’est ce que nous montrons dans une étude publiée aujourd’hui dans Lancet Planetary Health

doi.org/10.1016/S254...
🧵
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