Pierre Friedlingstein
@pfriedling.bsky.social
Born at 321 ppm. Climate & Carbon Cycle Scientist. Prof @UniofExeter Directeur de Recherche @CNRS @GlobalCarbonProject
Pinned
Global Carbon Budget 2025
Abstract. Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is critical to bette...
essd.copernicus.org
Published today in Earth System Science Data: The Global Carbon Budget 2025
essd.copernicus.org/preprints/es...
essd.copernicus.org/preprints/es...
👏
At #COP30 last week, India highlighted the impossibility of 1.5C and the reliance on CDR for overshoot scenarios. Interview with @glenpeters.bsky.social about Paris Agreement temperature goals, where we need to go and how to get there.
drilled.media/news/cop30-g...
drilled.media/news/cop30-g...
A Reckoning with the 1.5°C Goal at COP30
Climate scientist Glen Peters about where we are in terms of achieving Paris Agreement temperature goals, where we need to go and how to get there.
drilled.media
November 22, 2025 at 7:45 AM
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👏
“When it comes to climate change, the “end of the world” and “good for you” are “the two lowest-probability outcomes”.
www.nature.com/articles/d41...
“When it comes to climate change, the “end of the world” and “good for you” are “the two lowest-probability outcomes”.
www.nature.com/articles/d41...
Bill Gates’s climate comments are a dangerous distraction
People do not have to dismiss or exaggerate the climate threat to justify concerted action.
www.nature.com
November 18, 2025 at 8:00 PM
👏
“When it comes to climate change, the “end of the world” and “good for you” are “the two lowest-probability outcomes”.
www.nature.com/articles/d41...
“When it comes to climate change, the “end of the world” and “good for you” are “the two lowest-probability outcomes”.
www.nature.com/articles/d41...
Reposted by Pierre Friedlingstein
Direct air capture is not currently viable strategy. Likely increases carbon pollution (more carbon energy required to than saved). See @mzjacobson.bsky.social's work: news.stanford.edu/stories/2019... & Joe Romm's review for our center (@penncssm.bsky.social): bpb-us-w2.wpmucdn.com/web.sas.upen...
Study casts doubt on carbon capture
Current approaches to carbon capture can increase air pollution and are not efficient at reducing carbon in the atmosphere, according to research from Mark Z. Jacobson.
news.stanford.edu
November 15, 2025 at 5:07 PM
Direct air capture is not currently viable strategy. Likely increases carbon pollution (more carbon energy required to than saved). See @mzjacobson.bsky.social's work: news.stanford.edu/stories/2019... & Joe Romm's review for our center (@penncssm.bsky.social): bpb-us-w2.wpmucdn.com/web.sas.upen...
Reposted by Pierre Friedlingstein
Au GIEC, une bataille très politique autour des dates de publication du prochain rapport d’évaluation. Pour la 4e fois en 2 ans, les pays n’ont pas réussi à s’accorder sur son calendrier. Certains pays veulent repousser sa parution pour amoindrir l’action climatique www.lemonde.fr/planete/arti...
Au GIEC, une bataille très politique autour des dates de publication du prochain rapport d’évaluation
Pour la quatrième fois en deux ans, les pays n’ont pas réussi à s’accorder sur le calendrier du rapport phare du groupe d’experts du climat. Certains pays veulent repousser sa parution pour amoindrir ...
www.lemonde.fr
November 15, 2025 at 3:41 PM
Au GIEC, une bataille très politique autour des dates de publication du prochain rapport d’évaluation. Pour la 4e fois en 2 ans, les pays n’ont pas réussi à s’accorder sur son calendrier. Certains pays veulent repousser sa parution pour amoindrir l’action climatique www.lemonde.fr/planete/arti...
Reposted by Pierre Friedlingstein
How much CO₂ can the world emit while limiting global temperature rise?
November 15, 2025 at 9:01 AM
How much CO₂ can the world emit while limiting global temperature rise?
Published today in Earth System Science Data: The Global Carbon Budget 2025
essd.copernicus.org/preprints/es...
essd.copernicus.org/preprints/es...
Global Carbon Budget 2025
Abstract. Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is critical to bette...
essd.copernicus.org
November 13, 2025 at 3:07 PM
Published today in Earth System Science Data: The Global Carbon Budget 2025
essd.copernicus.org/preprints/es...
essd.copernicus.org/preprints/es...
😇
It was great to hear @pfriedling.bsky.social on BBC Radio 4 today discussing the carbon cycle as part of #COP30. Listen back at:
www.bbc.co.uk/sounds/play/...
www.bbc.co.uk/sounds/play/...
The Life Scientific - Pierre Friedlingstein on carbon’s pivotal role in climate change - BBC Sounds
Pierre Friedlingstein on the pivotal role of carbon in predicting climate change.
www.bbc.co.uk
November 11, 2025 at 3:29 PM
😇
Reposted by Pierre Friedlingstein
🤝 À l’occasion de la COP21, près de 200 pays s’engageaient pour la 1ère fois à lutter collectivement contre le réchauffement climatique en votant l’Accord de Paris.
10 ans plus tard, lors de l'ouverture de la COP30 sur le climat à Belém, où en sommes-nous ? Le tour en 5 graphiques 👇
10 ans plus tard, lors de l'ouverture de la COP30 sur le climat à Belém, où en sommes-nous ? Le tour en 5 graphiques 👇
Réchauffement, CO2, renouvelables, transport, déforestation : cinq graphs clés, dix ans après l’Accord de Paris sur le climat
Accord mais vain ? À l’occasion de la COP21, le 12 décembre 2015, près de 200 pays s’engageaient pour la première fois à lutter collectivement contre le réchauffement climatique en votant l’Accord de ...
vert.eco
November 10, 2025 at 2:59 PM
🤝 À l’occasion de la COP21, près de 200 pays s’engageaient pour la 1ère fois à lutter collectivement contre le réchauffement climatique en votant l’Accord de Paris.
10 ans plus tard, lors de l'ouverture de la COP30 sur le climat à Belém, où en sommes-nous ? Le tour en 5 graphiques 👇
10 ans plus tard, lors de l'ouverture de la COP30 sur le climat à Belém, où en sommes-nous ? Le tour en 5 graphiques 👇
Reposted by Pierre Friedlingstein
As part of the GCP-Regional Carbon Cycle Assessment and Processes-2, we recently published the Australasia's CH4 and N2O Budgets. The carbon budget was published in 2023, both papers, led by Yohanna Villalobos and a great team of collaborators.
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
November 4, 2025 at 10:22 PM
As part of the GCP-Regional Carbon Cycle Assessment and Processes-2, we recently published the Australasia's CH4 and N2O Budgets. The carbon budget was published in 2023, both papers, led by Yohanna Villalobos and a great team of collaborators.
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Pierre Friedlingstein
The US is not expected to send high-level representatives to COP30, and many say that’s for the best. Whether humanity bends the emissions curve sufficiently to escape the most dangerous climate impacts now depends on the actions of other big players
www.nature.com/articles/d41...
www.nature.com/articles/d41...
How to fight climate change without the US: a guide to global action
With the US government absent from the COP30 global climate summit, it will be up to others to avert catastrophe.
www.nature.com
November 4, 2025 at 10:54 PM
The US is not expected to send high-level representatives to COP30, and many say that’s for the best. Whether humanity bends the emissions curve sufficiently to escape the most dangerous climate impacts now depends on the actions of other big players
www.nature.com/articles/d41...
www.nature.com/articles/d41...
Reposted by Pierre Friedlingstein
Une nouvelle étude pointe les faiblesses structurelles de la compensation carbone : bénéfices surestimés, risques de fuite et stockage seulement temporaire du CO₂. Ce système, censé lutter contre la déforestation, peine à prouver son efficacité réelle.
Explications en GIF 🌳
Explications en GIF 🌳
Déforestation : pourquoi la compensation carbone est inefficace
Une nouvelle étude pointe les faiblesses structurelles de la compensation carbone : bénéfices surestimés, effets déplacés et stockage temporaire du CO₂. Ce système, censé lutter contre la déforestatio...
www.radiofrance.fr
October 22, 2025 at 5:36 AM
Une nouvelle étude pointe les faiblesses structurelles de la compensation carbone : bénéfices surestimés, risques de fuite et stockage seulement temporaire du CO₂. Ce système, censé lutter contre la déforestation, peine à prouver son efficacité réelle.
Explications en GIF 🌳
Explications en GIF 🌳
👏
The attack on @frediotto.bsky.social was seeded years ago by Roger Pielke Jr, who started arguing that this table from a recent @ipcc.bsky.social report proved that climate science cannot attribute extreme weather to climate change.
But Roger is of course lying. And we know this for 2 reasons.
🧵
But Roger is of course lying. And we know this for 2 reasons.
🧵
October 10, 2025 at 11:14 AM
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Definitely worth a read.
October 5, 2025 at 10:50 PM
Definitely worth a read.
It is difficult to get a man to understand something when his salary depends upon his not understanding it.
(Upton Sinclair)
www.reuters.com/sustainabili...
(Upton Sinclair)
www.reuters.com/sustainabili...
Trump tells UN that climate change is a 'con job'
President Donald Trump dismissed climate change as “the greatest con job” in the world during his address to the United Nations General Assembly on Tuesday, doubling down on his skepticism of global environmental initiatives and multilateral institutions.
www.reuters.com
September 23, 2025 at 6:05 PM
It is difficult to get a man to understand something when his salary depends upon his not understanding it.
(Upton Sinclair)
www.reuters.com/sustainabili...
(Upton Sinclair)
www.reuters.com/sustainabili...
Reposted by Pierre Friedlingstein
To rehabilitate the general view of women's contributions to the history of science, the CNRS is part of a commission that aims to inscribe the names of 72 female scientists on the Eiffel Tower. 🗼 #WomenInScience
Women scientists to be showcased on the Eiffel Tower soon
To rehabilitate the general view of women's contributions to the history of science, the CNRS is part of a commission that aims to inscribe
www.cnrs.fr
September 9, 2025 at 3:39 PM
To rehabilitate the general view of women's contributions to the history of science, the CNRS is part of a commission that aims to inscribe the names of 72 female scientists on the Eiffel Tower. 🗼 #WomenInScience
Reposted by Pierre Friedlingstein
🌍 Un engagement ambitieux de l’Europe pour 2040 est indispensable pour maintenir vivants les objectifs de l’Accord de Paris.
La position de la France fait peser un risque important sur l’adoption par l'UE d’objectifs à la mesure du défi climatique.
➡️ www.hautconseilclimat.fr/actualites/o...
La position de la France fait peser un risque important sur l’adoption par l'UE d’objectifs à la mesure du défi climatique.
➡️ www.hautconseilclimat.fr/actualites/o...
Objectif climatique européen 2040 et COP 30 : une proposition de la France menace l’Accord de Paris — Haut Conseil pour le Climat
Paris, le 5 septembre 2025 – Au moment des négociations européennes sur les objectifs climatiques de l’Union européenne pour la […]
www.hautconseilclimat.fr
September 5, 2025 at 11:30 AM
🌍 Un engagement ambitieux de l’Europe pour 2040 est indispensable pour maintenir vivants les objectifs de l’Accord de Paris.
La position de la France fait peser un risque important sur l’adoption par l'UE d’objectifs à la mesure du défi climatique.
➡️ www.hautconseilclimat.fr/actualites/o...
La position de la France fait peser un risque important sur l’adoption par l'UE d’objectifs à la mesure du défi climatique.
➡️ www.hautconseilclimat.fr/actualites/o...
A 0.7°C cooling at best from all geological carbon storage.
So could 2.2°C be seen as the maximum allowed overshoot temperature ? 🤓
So could 2.2°C be seen as the maximum allowed overshoot temperature ? 🤓
NEW STUDY: How much CO2 can we safely store in geological formations?
In a new @nature.com study, we cross-check established academic and industry estimates with various risk factors.
We find a prudent geological CO2 storage limit that is about 10x smaller. /1
In a new @nature.com study, we cross-check established academic and industry estimates with various risk factors.
We find a prudent geological CO2 storage limit that is about 10x smaller. /1
September 3, 2025 at 6:12 PM
A 0.7°C cooling at best from all geological carbon storage.
So could 2.2°C be seen as the maximum allowed overshoot temperature ? 🤓
So could 2.2°C be seen as the maximum allowed overshoot temperature ? 🤓
Great news study of the global ocean carbon sink response to the 2023 warming conditions
🌊 In 2023, the ocean carbon sink weakened for the first time in a record-hot year 🌡️🌎
Our new study in Nature Climate Change quantifies this unexpected decline and explains how it came about. 👇
doi.org/10.1038/s415...
Our new study in Nature Climate Change quantifies this unexpected decline and explains how it came about. 👇
doi.org/10.1038/s415...
Unexpected decline in the ocean carbon sink under record-high sea surface temperatures in 2023 - Nature Climate Change
The ocean carbon sink strengthened in previous warm El Niño years due to reduced CO2 outgassing in the tropics. Here the authors show that the ocean carbon sink declined in 2023 despite record-high se...
doi.org
September 2, 2025 at 6:45 PM
Great news study of the global ocean carbon sink response to the 2023 warming conditions
Reposted by Pierre Friedlingstein
The @ametsoc.org responds to the the regime's Department of Energy #climate report:
"We identify five foundational flaws in the [...] report. Each of these flaws, alone, places the report at odds with scientific principles and practices." www.ametsoc.org/ams/about-am...
"We identify five foundational flaws in the [...] report. Each of these flaws, alone, places the report at odds with scientific principles and practices." www.ametsoc.org/ams/about-am...
The Practice and Assessment of Science: Five Foundational Flaws in the Department of Energy's 2025 Climate Report
Adopted by the Executive Committee of the AMS Council on 27 August 2025
www.ametsoc.org
August 28, 2025 at 5:18 PM
The @ametsoc.org responds to the the regime's Department of Energy #climate report:
"We identify five foundational flaws in the [...] report. Each of these flaws, alone, places the report at odds with scientific principles and practices." www.ametsoc.org/ams/about-am...
"We identify five foundational flaws in the [...] report. Each of these flaws, alone, places the report at odds with scientific principles and practices." www.ametsoc.org/ams/about-am...
Reposted by Pierre Friedlingstein
Are you interested in biosphere-atmosphere interactions, global modeling, and living in Zurich? If so, this postdoc position might be for you! Please share with any interested colleagues: jobs.ethz.ch/job/view/JOP...
Postdoctoral Researcher in Atmospheric Chemistry
jobs.ethz.ch
August 25, 2025 at 1:57 PM
Are you interested in biosphere-atmosphere interactions, global modeling, and living in Zurich? If so, this postdoc position might be for you! Please share with any interested colleagues: jobs.ethz.ch/job/view/JOP...
Reposted by Pierre Friedlingstein
The #IPCC has announced the authors selected for its Seventh Assessment Report.
664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.
🌍 51% from developing countries
🚺 46% women
🔗 bit.ly/AR7AuthorsPR
664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.
🌍 51% from developing countries
🚺 46% women
🔗 bit.ly/AR7AuthorsPR
August 18, 2025 at 1:09 PM
The #IPCC has announced the authors selected for its Seventh Assessment Report.
664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.
🌍 51% from developing countries
🚺 46% women
🔗 bit.ly/AR7AuthorsPR
664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.
🌍 51% from developing countries
🚺 46% women
🔗 bit.ly/AR7AuthorsPR
They should then suggest to remove the first A from NASA …
NASA’s acting chief calls for the end of Earth science at the space agency arstechnica.com/space/2025/0...
NASA’s acting chief calls for the end of Earth science at the space agency
NASA’s charter clearly states the agency should study planet Earth, however.
arstechnica.com
August 16, 2025 at 12:49 AM
They should then suggest to remove the first A from NASA …
Reposted by Pierre Friedlingstein
That phony EPA 'climate report'? The good folks at @carbonbrief.org fact-checked it. Take a look, and then file a comment with the EPA. interactive.carbonbrief.org/doe-factchec...
Factcheck: Trump’s climate report includes more than 100 false or misleading claims
interactive.carbonbrief.org
August 15, 2025 at 12:28 AM
That phony EPA 'climate report'? The good folks at @carbonbrief.org fact-checked it. Take a look, and then file a comment with the EPA. interactive.carbonbrief.org/doe-factchec...
Reposted by Pierre Friedlingstein
"A climate skeptic report commissioned by the Trump administration outrages the American scientific community” by @sfoucart.bsky.social for @lemonde.fr (en francais):
August 6, 2025 at 11:22 PM
"A climate skeptic report commissioned by the Trump administration outrages the American scientific community” by @sfoucart.bsky.social for @lemonde.fr (en francais):