Pierre Friedlingstein

@pfriedling.bsky.social

8.5K followers 440 following 530 posts

Born at 321 ppm. Climate & Carbon Cycle Scientist. Prof @UniofExeter Directeur de Recherche @CNRS @GlobalCarbonProject

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Pierre Friedlingstein is Professor and Chair in Mathematical Modelling of the Climate System at the University of Exeter, and Research Director at the Laboratoire de Météorologie dynamique (LMD), Centre National de la Recherche Scientifique (CNRS), France. .. more

Environmental science 58%

Geography 17%

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Pierre Friedlingstein @pfriedling.bsky.social · Nov 13

Published today in Earth System Science Data: The Global Carbon Budget 2025
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

Reposted by Pierre Friedlingstein, Du Toit, Tuomas Mattila , and 1 more Pierre Friedlingstein, Du Toit, Tuomas Mattila, Juan Rocha

Zeke Hausfather @hausfath.bsky.social · 5d

I've put together my predictions for 2026 and 2027 temperatures over at The Climate Brink. I expect 2026 will likely end up similar to 2023 and 2025 at ~1.4C, while 2027 will likely be considerably warmer (conditional on El Nino): www.theclimatebrink....

Reposted by Scott C. Doney, Pierre Friedlingstein

Marshall Shepherd @drshepherd2013.bsky.social · 7d

Please read

www.forbes.com/sites/marsha...

Reposted by Glen P. Peters, Scott C. Doney, Pierre Friedlingstein , and 2 more Glen P. Peters, Scott C. Doney, Pierre Friedlingstein, Steven J. Davis, Robbie M. Andrew

Pep Canadell @pepcanadell.bsky.social · 7d

The Global Carbon Project has just published the most comprehensive Global Hydrogen Budget to date.

H2, although not a GHG, has an indirect Global Warming Potential 37 times more potent than CO2.

Carbon Brief:
www.carbonbrief.org/hydrogen-emi...

Research paper:
www.nature.com/articles/s41...

Hydrogen emissions are ‘supercharging’ the warming impact of methane - Carbon Brief

The warming impact of hydrogen has been “overlooked” in projections of climate change, authors of the latest “global hydrogen budget” say.

www.carbonbrief.org

Reposted by Pierre Friedlingstein, Wim Thiery, Iain Davidson , and 5 more Pierre Friedlingstein, Wim Thiery, Iain Davidson, Christopher Wright, Mark Rice, Ryan K. Brook, Patrick Stokes, Tim Stephens

Kate Marvel @drkatemarvel.bsky.social · Nov 25

I really wish we'd stop calling them climate "skeptics" or "vaccine skeptics", if you jump off a cliff we don't call you a "gravity skeptic"

Pierre Friedlingstein @pfriedling.bsky.social · Nov 25

bsky.app/profile/pfri...

Pierre Friedlingstein @pfriedling.bsky.social · Nov 13

2023-2024 El Niño led to a record high atmospheric CO₂ increase of 29 GtCO2 in 2024 (3.7 ppm), almost 50% above the decadal average.
The land sink decreased substantially, 20% below the decadal average, 40% below 2022 (pre-El Niño). The tropics recorded the largest drop in the land C sink

Pierre Friedlingstein @pfriedling.bsky.social · Nov 25

Last year record increase in atmospheric CO₂ (3.7ppm), well above the decadal average of about 2.5 ppm, was due to the El Niño conditions.

Pierre Friedlingstein @pfriedling.bsky.social · Nov 25

That statement is misleading:
…” the concentration of carbon in Earth’s atmosphere rose more in 2024 than in any other year ..”
“Climate scientists unanimously agree that last year’s increase was provoked by human activities, especially the burning of fossil fuels like oil, coal and natural gas.”

Reposted by Oliver L. Phillips

Pierre Friedlingstein @pfriedling.bsky.social · Nov 25

For once, some good news about the Amazon tropical forest 🌳

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

Increasing tree size across Amazonia - Nature Plants

A global research network monitoring the Amazon for 30 years reports in this study that tree size increased by 3% each decade.

www.nature.com

Reposted by Pierre Friedlingstein

ESM2025 @esm2025.bsky.social · Nov 25

Eager for more details?
👀 Check our full Research Highlight here:bit.ly/4qMYPEy

With @docaharper.bsky.social from @universityofga.bsky.social @exeter.ac.uk, Gabriel Abrahão, from @pik-potsdam.bsky.social and @rosieafisher.bsky.social, from @cicero.oslo.no

Can We Count on the Land? Exploring the Uncertainty of Land-based Mitigation Strategies

How Earth System Models assess land-based carbon removal (AR, BECCS): carbon-cycle responses, and local climate side-effects; and how Integrated Assessment Models then asses socio-economic constraints that shape decision-ready deployment.

www.esm2025.eu

Pierre Friedlingstein @pfriedling.bsky.social · Nov 22

👏

Rishika Pardikar @rishpardikar.bsky.social · Nov 19

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...

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

Reposted by Glen P. Peters, Pierre Friedlingstein

Rishika Pardikar @rishpardikar.bsky.social · Nov 19

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

Reposted by Tom Shakespeare

Pierre Friedlingstein @pfriedling.bsky.social · Nov 18

👏
“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

Pierre Friedlingstein @pfriedling.bsky.social · Nov 17

Très bel entretien 👍

Reposted by Pierre Friedlingstein, Juan Cole

Michael E. Mann @michaelemann.bsky.social · Nov 15

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

Reposted by Pierre Friedlingstein

Audrey Garric @audreygarric.bsky.social · Nov 15

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...