Pierre Friedlingstein
@pfriedling.bsky.social
Born at 321 ppm. Climate & Carbon Cycle Scientist. Prof @UniofExeter Directeur de Recherche @CNRS @GlobalCarbonProject
Where is this 34% coming from ? It’s more like 65%.
See IPCC AR6 WG3 SPM
www.ipcc.ch/report/ar6/w...
See IPCC AR6 WG3 SPM
www.ipcc.ch/report/ar6/w...
Figure: SPM.1
.
www.ipcc.ch
January 28, 2026 at 3:02 PM
Where is this 34% coming from ? It’s more like 65%.
See IPCC AR6 WG3 SPM
www.ipcc.ch/report/ar6/w...
See IPCC AR6 WG3 SPM
www.ipcc.ch/report/ar6/w...
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
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
November 25, 2025 at 7:49 PM
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.
November 25, 2025 at 7:47 PM
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.
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.”
…” 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.”
November 25, 2025 at 7:45 PM
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.”
…” 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 Pierre Friedlingstein
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
👀 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
November 25, 2025 at 7:28 AM
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
👀 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
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...
Très bel entretien 👍
November 17, 2025 at 12:28 AM
Très bel entretien 👍
You could also mention that the projected atmospheric CO₂ growth rate will be much lower in 2025 (2.6ppm, red dot on the figure).
November 14, 2025 at 9:54 PM
You could also mention that the projected atmospheric CO₂ growth rate will be much lower in 2025 (2.6ppm, red dot on the figure).
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 14, 2025 at 9:39 PM
You are confusing CO₂ emissions and CO₂ concentrations.
November 14, 2025 at 9:38 PM
You are confusing CO₂ emissions and CO₂ concentrations.
And thank you for your contribution 🙏
November 14, 2025 at 12:52 PM
And thank you for your contribution 🙏
