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Posts by Rémi Gaillard

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Revisiting the near-term projection from IPCC AR5 A more technical diversion back to 2013

Revisiting the near-term projection from IPCC AR5

climatelabbook.substack.com/p/revisiting...

1 week ago 49 20 6 1
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NEW STUDY: Winter downpours are getting heavier in parts of Spain, Portugal and Morocco as the region recovers from a month of relentless storms.

Between mid-January and mid-February nine named storms brought torrential rain hurricane force winds causing major damage and disruption. 1/5

1 month ago 94 64 1 13
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IPSL-Perm-LandN: improving the IPSL Earth System Model to represent permafrost carbon-nitrogen interactions Abstract. Permafrost soils have the potential to release large amounts of soil carbon to the atmosphere under climate change. However, in the Sixth Coupled Model Intercomparison Project (CMIP6), only ...

🚨 New paper 🚨

We have included key permafrost physical, carbon and nitrogen processes in the IPSL Earth system model.

Evaluation shows improved permafrost dynamics and carbon content, paving the way for a more accurate representation of Arctic ecosystems in CMIP7.

🔗 doi.org/10.5194/gmd-...

2 months ago 2 2 0 0
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🌍🎙️ Notre collègue @bopplaurent.bsky.social (LMD–IPSL) est l’invité du Greenletter Club. Il y parle climat, océan, cycle du carbone et enjeux scientifiques actuels.
🎧 greenletterclub.fr/podcast/epis...
📺 www.youtube.com/watch?v=dE6VDV6klOk

3 months ago 3 2 0 0
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Borealization of tundra ecosystems with climate and land-use change Borealization of tundra ecosystems with climate and land-use change, Verdonen, Mariana, Barrio, Isabel C, Barbero-Palacios, Laura, López-Blanco, Efrén, Speed, James D M, Defourneaux, Mathilde, García ...

🌲 Defining tundra borealization 🌲

Our new @nordborn.bsky.social review in @ioppublishing.bsky.social standardises the concept of tundra borealization & summarises its main patterns, drivers & consequences. Brilliantly led by @verdonenm.bsky.social & @icbarrio.bsky.social!

doi.org/10.1088/1748...

3 months ago 7 4 0 0
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Après plusieurs jours sous les brouillards givrants, la végétation s’est recouverte d’une épaisse couche de givre sur le Nord de l’Indre, vers La Champenoise, ce 5 janvier 2026 matin.
Les 1ers rayons du soleil qui ont percé la couche de nuages ont sublimé ce paysage féerique ✨.

3 months ago 26 6 2 0
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We (@crossdale.bsky.social, Christina Pantazis, @roxana-pessoa.bsky.social, Tiê Franco Brotto and I) present the first academic peer-reviewed article, studying the criminalisation and repression of climate and environmental protest as a global phenomenon. www.tandfonline.com/doi/full/10....

4 months ago 291 160 6 20
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📚 Notre collègue @bopplaurent.bsky.social a contribué au rapport de l'Académie des sciences sur la géo-ingénierie climatique. Le message est clair : "Appel à la prudence et encadrement rigoureux."
👉 Lire le rapport complet : www.academie-sciences.fr/rapport-geo-...

4 months ago 0 1 0 0
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Impressive rock avalanche on the Dent de Crolles (2062 m asl) in the Chartreuse Massif, French Prealps yesterday 😲

Release area ~1800 m asl

📷 Sylvain Thiabaud

4 months ago 63 23 0 2
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Sublime ciel 😍 observé ce jeudi 27 novembre 2025 matin, au-dessus de Châteauroux (Indre) avec une belle gelée 🥶 au lever du jour ! @assometeocvdl.bsky.social

4 months ago 4 2 0 0
Internship@CGS IPSL À l’IPSL-CGS, le climat j’en fais mon métier !

Vous recherchez un stage en sciences du climat?
N'hésitez pas à aller voir le nouveau site de l'@ipsl.bsky.social qui liste les offres disponibles
internships-climate.ipsl.fr

4 months ago 2 1 0 0
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[#Décryptage] Changement climatique : « La parole du scientifique est essentielle pour contrer les discours lénifiants nourrissant l’illusion d’adaptation sans casse » Alors que la compréhension des enjeux climatiques progresse dans la société et que les événements extrêmes se multiplient, la transition écologique peine encore à se concrétiser. Il ne s’agit plus seu...

Merci Christophe pour ton interview lucide, courageux, sincère, sérieux, inspirant. Pour tous et toutes.
www.ens.psl.eu/actualites/d...

5 months ago 33 21 2 1
Illustration of a dart missing the bullseye on a colorful target, symbolizing global temperature goals at risk due to inaction.

Illustration of a dart missing the bullseye on a colorful target, symbolizing global temperature goals at risk due to inaction.

New national climate plans have barely moved the needle on limiting global warming. Yet there is hope.

According to UNEP's latest #EmissionsGap Report, accelerated adoption of renewable energy and falling costs mean we have the tools to cut emissions now: www.unep.org/news-and-sto...

5 months ago 210 122 2 23
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It’s goodnight Vienna as Paris sleeper train to Austria and Berlin hit by cuts Some Nightjet services suspended from mid-December after French withdrawal amid public budget crisis

Paris-Berlin sleeper: low carbon, 2 years old, constantly full, but currently losing SNCF a few million EUR/yr

Intl Jet fuel tax exemptions are 80 years old and cost the EU 22 million EUR/yr for the Paris-Berlin route alone.

And you're cutting... the sleeper?

www.theguardian.com/travel/2025/...

6 months ago 493 273 12 11
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Systematic attribution of heatwaves to the emissions of carbon majors - Nature Climate change made 213 historical heatwaves reported over 2000–2023 more likely and more intense, to which each of the 180 carbon majors (fossil fuel and cement producers) substantially contributed.

🚨 Important paper in Nature: "Systematic attribution of heatwaves to the emissions of carbon majors".

www.nature.com/articles/s41...

7 months ago 190 92 7 17
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flat10MIP: an emissions-driven experiment to diagnose the climate response to positive, zero and negative CO2 emissions Abstract. The proportionality between global mean temperature and cumulative emissions of CO2 predicted in Earth system models (ESMs) is the foundation of carbon budgeting frameworks. Deviations from ...

Our finalised paper on flat10MIP is finally up in GMD! This is the experimental protocol which allows for a simple, emissions-driven evaluation of TCRE, ZEC and climate reversibility in CMIP7. Thanks so much to all who ran these simulations as a proof of concept! gmd.copernicus.org/articles/18/...

7 months ago 55 18 0 2
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Arctic soil carbon insulation averts large spring cooling from surface–atmosphere feedbacks | PNAS The insulative properties of soil organic carbon (SOC) and surface organic layers (moss, lichens, litter) regulate surface–atmosphere energy exchan...

📢 (Not so) New paper now in open access !

We show that soil organic carbon and surface organic layers play a critical role for surface-atmosphere energy exchanges in the Arctic. Better representing this insulative effect in ESMs could improve Arctic climate projections.

🔗 doi.org/10.1073/pnas...

9 months ago 2 3 0 0

La baisse de la pollution n’accélère pas le changement climatique. Elle révèle sa réalité. Les aérosols masquent temporairement le réchauffement par leur pouvoir refroidissant.

➡️ Injecter des aérosols dans l’atmosphère est une fausse bonne idée. Seule la neutralité carbone stoppe le réchauffement.

9 months ago 183 61 3 2

@cnrsecologie.bsky.social regrette profondément l'adoption de cette loi à la vision court-termiste & ses conséquences graves sur l’environnement, qui méprise santé & bien-être de la population & le rôle des espèces sauvages dans la prod. agricole. La communauté scientifique n'a pas été entendue.

9 months ago 1624 1121 36 81
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🌡️ #NewReport: the June 2025 Western European heatwave was up to +2.5°C hotter & drier than similar past events — mainly due to human-driven climate change.
It’s not rare anymore. It’s our climate.
📎 Read the report 👉 www.climameter.org/20250620-22-...

9 months ago 40 19 0 2

Qques mots forts que j'ai prononcés avec émotion @franceinfo.fr
C'est un mensonge de laisser croire que l'on s'adaptera sans casse irréversible dans une France à 4°C. On ne s'adapte pas a un effondrement de la biodiversité; on meurt avec!
Les régressions actuelles sont irresponsables & suicidaires.

10 months ago 1776 1127 37 36
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France Télévisions lance « la météo de l’eau », un bulletin hebdomadaire La « météo de l’eau » abordera des sujets plus larges comme la qualité de l’eau, la question des littoraux et des océans ou la montée des ea

C'est ce soir la 1ere !!!!! 🤞💪🥂💙
Vous aimez le journal quotidien de la Météo et du Climat sur @francetelevisions.bsky.social. Je suis sur que vous allez aimer la "Météo de l'eau" qui remettra une fois par semaine, les enjeux de l'eau dans un climat qui change.
www.leparisien.fr/culture-lois...

10 months ago 289 82 8 1
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Spectacular encounter of the Arve and Rhône rivers at Geneva today! 🌊

The former is heavily laden with sediment from melting snow and heavy thunderstorms over the last few hours

🎥 Loic Francon

10 months ago 100 23 2 2

Merci @reporterre.net pour ce super article sur la tournée des Sacoches du Climat (@sacochesclimat.bsky.social) dans le Pas-de-Calais 🚲🌍🌲

Pour suivre nos aventures et un retour sur cette édition 2025 ▶️ sacochesclimat.ipsl.fr

10 months ago 9 4 0 0
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Merci beaucoup à @reporterre.net pour ce très chouette article sur les @sacochesclimat.bsky.social 🚴🌍🌿

Merci à Lila Martin et Mathieu Génon d'être venus (en train !) nous rencontrer pour notre dernière intervention en milieu scolaire de cette seconde édition des Sacoches !

10 months ago 6 4 1 0
A conference speaker presents research on the carbon dioxide removal potential of seaweed cultivation at the One Ocean Science Congress. The presentation includes a title slide, and the audience watches attentively. 🌊

A conference speaker presents research on the carbon dioxide removal potential of seaweed cultivation at the One Ocean Science Congress. The presentation includes a title slide, and the audience watches attentively. 🌊

@manonberger.bsky.social showed at #OOSC that if iron limitation is considered, there’s nowhere in the ocean where it’s suitable to grow kelp for CO₂ removal (CDR). Stay tuned for the paper.

10 months ago 46 14 1 1
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Mapping the world's inland surface waters: an upgrade to the Global Lakes and Wetlands Database (GLWD v2) Abstract. In recognition of the importance of inland waters, numerous datasets mapping their extents, types, or changes have been created using sources ranging from historical wetland maps to real-tim...

A fantastic new mapping product for the world's inland waters, a critical driver for studying GHG emissions, biodiversity, and much more.

Mapping the world's inland surface waters: an upgrade to the Global Lakes and Wetlands Database (GLWD v2)

essd.copernicus.org/articles/17/...

10 months ago 13 12 0 1
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Protected bike lanes have a near-magical ability to produce cyclists.

This new study of 28 US cities finds that census block groups w/protected bike lanes expanded bike commuting almost 2x faster than those w/standard bike lanes & >4x faster than those w/o new lanes.

www.nature.com/articles/s44...

10 months ago 602 212 16 39
Des membres des Sacoches du Climat roulent sur un tandem lors de l'édition 2024.

Des membres des Sacoches du Climat roulent sur un tandem lors de l'édition 2024.

Rendez vous entre le 19 et le 27 mai à Ruisseauville, Blangy, Heuchin, Radinghem, Fauquembergues, Fruges, Saint Pol sur Ternoise, Hucqueliers et Montreuil sur Mer ! 🚲☀️

11 months ago 4 4 0 1