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Pep Canadell @pepcanadell.bsky.social · 03/09/2026

The 12th International Carbon Dioxide Conference will be held at Uni. Exeter, UK, organized by the Global Carbon Budget Office (Global Carbon Project) It is as good as it gets in the world of carbon science. Don't miss it. The call for abstracts and mini-workshop proposals is now open. icdc12.org

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Pep Canadell @pepcanadell.bsky.social · 04/08/2026

For those interested in N2O, the Global Carbon Project is running a session at the AGU meeting this December in San Francisco B052 - Global Nitrous Oxide Budget: Sources, Drivers, Uncertainties, and Mitigation Pathways agu.confex.com/agu/agu26/pr... Deadline for abstract submission: August 5

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Pep Canadell @pepcanadell.bsky.social · 21/07/2026

For context, this increase in emissions corresponds to 8-10% of the mitigation committed by the Global Methane Pledge, which aims to reduce anthropogenic CH4 emissions by 30% relative to 2020 levels by 2030. Paper: www.nature.com/articles/s41...

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Pep Canadell @pepcanadell.bsky.social · 21/07/2026

1/3 Using the global wetland model ensemble of the Global Carbon Project-Global Methane Budget, constrained by 163 site-year measurements, Zhen Zhang, @benpoulter.bsky.social & colleagues show that for every 1 degree C increase in global temperature, CH4 emissions increase by 24Tg per year

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Pep Canadell @pepcanadell.bsky.social · 26/05/2026

6/n 5. Yet effective, these straightforward and well-known mitigation strategies can only reduce GHG emissions by about 10%, leaving most of the emissions unabated.

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Pep Canadell @pepcanadell.bsky.social · 26/05/2026

5/n 4. There are effective mitigation strategies to reduce GHG emissions: replace continuous flooding with intermittent flooding; reduce chemical fertilizers and straw additions to a level not affecting crop yield; no-tillage.

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Pep Canadell @pepcanadell.bsky.social · 26/05/2026

4/n 3. Asia continues to dominate rice emissions globally, but the fastest growth in emissions comes from Africa, albeit starting from a low baseline.

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Pep Canadell @pepcanadell.bsky.social · 26/05/2026

3/n 2. The growth comes from more land under rice cultivation, more chemical (70% increase since 2000) and organic inputs per hectare, and more crops per year (up to three in some countries).

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Pep Canadell @pepcanadell.bsky.social · 26/05/2026

2/n Here are a few highlights: 1. GHG emissions (methane and nitrous oxide) from rice cultivation have doubled since the 1960s, to about 1.1 billion tons of carbon dioxide-equivalent per year during the last decade. This is a significant contribution to the 50+GtCO2e of total annual GHG emissions

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Pep Canadell @pepcanadell.bsky.social · 26/05/2026

1/n We just published a global assessment of GHG emissions from global rice cultivation. Led by Jingting Zhang & Hanqin Tian, this is part of the Global Carbon Project's efforts to constrain the Global Methane Budget & provide relevant data for GHG mitigation. theconversation.com/rice-feeds-b...

theconversation.com

Rice feeds billions of people – but its role in fueling climate change is growing

There are ways to reduce emissions without sacrificing yield. A new study shows how, and looks at a technique billed as ‘climate-friendly’ that makes emissions worse.

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Pep Canadell @pepcanadell.bsky.social · 26/05/2026

2/2 For anyone working on CH4 emissions measurement, climate policy or industrial decarbonization, FRAME is a valuable opportunity to connect with others in the field and engage with the latest evidence and approaches. You can register (Expression of Interest) here: www.frameconference.org.au

frameconference.org.au

FRAME Conference 2026

The Forum for Reducing Australia's Methane Emissions. Wed 3 & Thu 4 June 2026 · CSIRO Black Mountain, Canberra · Hybrid.

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Pep Canadell @pepcanadell.bsky.social · 26/05/2026

1/2 Next week, I’ll join experts from across the research, industry and policy communities at FRAME – the Forum for Reducing Australia’s Methane Emissions. Over two days, we’ll examine methane measurement and abatement, share emerging knowledge, and support stronger cross-sector understanding.

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Pep Canadell @pepcanadell.bsky.social · 22/05/2026

Join us for the 12th International Carbon Dioxide Conference, the leading international conference on the global carbon cycle and its critical role in the Earth system. 21-25 June 2027, Exeter, UK. Register your interest: icdc12.org #ICDC12 #GlobalCarbonBudget #CarbonCycle

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Glen Peters @glenpeters.bsky.social · 13/03/2026

What happens to the climate system when global CO2 emissions reach zero? We all know that the temperature stops rising (stays approximately constant), but there are a few implications... rdcu.be/e73i4 1/

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Pep Canadell @pepcanadell.bsky.social · 17/05/2026

1/1 The GCP-Global Carbon Budget 2025 has just been published in its final form. It is the same data we released at the last COP in Nov 2025, but given the many improvements this budget introduced compared to previous editions, it underwent a longer and more detailed peer review process.

essd.copernicus.org

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...

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Pep Canadell @pepcanadell.bsky.social · 22/04/2026

In case you missed this report, published by the Integrated Ocean Carbon Research (IOC-R) program, which is co-sponsored by the Global Carbon Project. unesdoc.unesco.org/ark:/48223/p...

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Judith Hauck @jhauck.bsky.social · 20/04/2026

Last chance to apply for this 🌊 job

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Glen Peters @glenpeters.bsky.social · 10/04/2026

We have a pretty good understanding of the differences between GHG emission estimates, but when it comes to some sectors (e.g., land), estimates seem all over the place! Why is this? @wflamb.bsky.social has you covered... essd.copernicus.org/articles/18/... 1/

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Pep Canadell @pepcanadell.bsky.social · 20/03/2026

A new paper for anyone interested in the role of forest conservation, forestry, and forest products as climate solutions. Led by Didac Pascual and Anders Ahlstrom from Lund University. theconversation.com/swedens-old-...

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Pep Canadell @pepcanadell.bsky.social · 18/12/2025

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...

carbonbrief.org

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.

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Pep Canadell @pepcanadell.bsky.social · 27/11/2025

Last couple of days, if you are interested. Even if you don't want or qualify for funding, you might be interested in participating in this new activity with your in-kind support.

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Pep Canadell @pepcanadell.bsky.social · 26/11/2025

1/2 For Biospheric Modelers There is a new activity led by @benpoulter.bsky.social at SPARK, supported by the GCP, called Warming Induced Emissions-Model Intercomparison (WIE-MIP). There is a call for involvement and a funding opportunity with a deadline at the end of November.

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Leon Simons @leonsimons.com · 14/11/2025

The atmospheric CO₂ growth rate was off the chart in 2024!

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Glen Peters @glenpeters.bsky.social · 14/11/2025

It is worth a reminder that each year we revised the carbon budget in all years, not just the last year www.carbonbrief.org/analysis-fos... This year we had a rather big adjustment in land-use change emissions, including the change in carbon density due to CO2 fertilisation, etc. rdcu.be/ePDDS

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Corinne Le Quéré @clequere.bsky.social · 14/11/2025

The 2025 update of the Global Carbon Budget is out. While fossil CO2 emissions rise again and carbon sinks are weakened by climate change, deforestation emissions are down and many countries decarbonise their energy. No global emissions peak yet though. theconversation.com/the-worlds-c...

theconversation.com

The world’s carbon emissions continue to rise. But 35 countries show progress in cutting carbon

In 2025 the world has fallen short, again, of peaking and reducing its fossil fuel use. But there are many countries on a path to greener energy.

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Pierre Friedlingstein @pfriedling.bsky.social · 13/11/2025

1) Fossil fuel Still no peak. Emissions are projected to increase by 1.1% in 2025, reaching 38.1 GtCO2. An all time high.

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Pep Canadell @pepcanadell.bsky.social · 13/11/2025

1/2 We just published the Global Carbon Budget 2025, with a mix of bad news (CO2 emissions continue to grow) and encouraging news (35 countries saw emissions decline over the past decade while growing their economies). Read the highlights in a short article: theconversation.com/the-worlds-c...

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Glen Peters @glenpeters.bsky.social · 13/11/2025

📢Global Carbon Budget 2025📢 Fossil CO2 emissions continue to rise in 2025 while the terrestrial carbon sink recovers to pre-El Niño strength. The key findings are covered in two reports this year: * ESSDD (preprint): essd.copernicus.org/preprints/es... * Nature: www.nature.com/articles/s41... 1/

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Pep Canadell @pepcanadell.bsky.social · 13/11/2025

Dear Zeke, it is the reverse, falling luc emissions offset to some extent the rising fossil fuel emissions

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Zeke Hausfather @zekehausfather.com · 13/11/2025

The new 2025 Global Carbon Budget finds that fossil fuel emissions will reach a new high in 2025. Total CO2 emissions (including land use) remain flat at 2024 levels. While the land sink is up from 2024, carbon sinks are weakening: www.carbonbrief.org/...

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Pep Canadell @pepcanadell.bsky.social · 13/11/2025

2/2 And a second paper describing all the research advances the group and the broader community have achieved, leading to this year's much-improved and constrained Global Carbon Budget. essd.copernicus.org/preprints/es... www.nature.com/articles/s41...

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Pep Canadell @pepcanadell.bsky.social · 13/11/2025

1/2 To support this year's Global Carbon Budget, 2025, we are publishing The big paper, made possible by the strong commitment of a core group of scientists, with @pfriedling.bsky.social at the lead, working with a network of equally committed contributors from 102 research organizations worldwide

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Pep Canadell @pepcanadell.bsky.social · 13/11/2025

2/2 If you are interested in diving deeper into the data, global and national trends, summary PPT, and a myriad of figures, visit the Global Carbon Budget page: www.globalcarbonproject.org

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Pep Canadell @pepcanadell.bsky.social · 13/11/2025

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Glen Peters @glenpeters.bsky.social · 04/11/2025

There is increasing talk about overshoot of 1.5°C, particularly that *now* we can only achieve 1.5°C by first overshooting 1.5°C. Well, sorry to tell you, 1.5°C have always been overshoot scenarios. Here from the original 'SSP' 1.5°C scenarios published in 2018. [Overshoot is a scenario design]

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Pep Canadell @pepcanadell.bsky.social · 04/11/2025

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/...

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Pep Canadell @pepcanadell.bsky.social · 08/09/2025

Atraura pluges nomes es possible quan es fa aforestacio a gran escale i no es garantit depened de les la circulacio atmosferica de la region. Atraura pluja es el que algun estudis han trobat del programs d'aforestacio al Loess Plateau de la Xina. No hi ha massa examples cientificament provats.

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Pep Canadell @pepcanadell.bsky.social · 08/09/2025

2/2 Kudos to the Australian National Environmental Science Program (NESP2)-Climate Systems Hub and CSIRO for being so committed to building a long-term working relationship between Western science and First Nations knowledge. Access the paper: www.publish.csiro.au/ES/ES24048

publish.csiro.au

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Pep Canadell @pepcanadell.bsky.social · 08/09/2025

1/2 I feel privileged to have had the opportunity to make a small contribution to this paper, just published. "Building relationships between First Nations Peoples and Western scientists to increase capacity to understand, respond and adapt to climate change"

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Pep Canadell @pepcanadell.bsky.social · 29/08/2025

New assessment on the biophysical potential of forestation to sequester carbon. As expected, we found just a fraction of what other assessments found, because we considered the obvious no-nos, such as risk to biodiversity, excess water use, and regional warming. theconversation.com/the-climate-...

theconversation.com

The climate case for planting trees has been overhyped — but it’s not too late to fix it

Reforestation can contribute significantly to tackling climate change, but research found its global potential is only a fraction of what’s been claimed.

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Pep Canadell @pepcanadell.bsky.social · 13/08/2025

3/3 Comparing the results with the Gross Primary Production estimates from biospheric models (e.g., Dynamic Global Vegetation Models), the study concludes that the modelled GPP in Northern Hemisphere ecosystems needs to be higher to match the increasing seasonal variations in atmospheric CO2.

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Pep Canadell @pepcanadell.bsky.social · 13/08/2025

2/3 It also shows that the increase in CO2 uptake is almost proportional to the increase in atmospheric CO2, further cementing this process as the key driver for the role of terrestrial ecosystems in slowing down global warming.

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