Pep Canadell

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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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

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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"

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.

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-...

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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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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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A new study, led by Matthias Cuntz and our dearest late Vanessa Haverd, shows beautifully how the increase of the seasonal variation in atmospheric CO2 in the Northern Hemisphere over the past 40 years can only be explained by an increase in the CO2 uptake by plants.

doi.org/10.1029/2025...

Around 250 million years ago, Earth was near-lifeless and locked in a hothouse state. Now scientists know why The answer confirms scientists’ suspicion that when our planet’s climate crosses certain ‘tipping points’, truly catastrophic ecological collapse can follow.

Interesting new article showing the overwhelming role of tropical forests in past climates. Hard not to wonder about what it means for today’s climate crisis and the changes we see in tropical regions and particularly the Amazon.

theconversation.com/around-250-m...

Ancient trees are shipped to the UK, then burned – using billions in ‘green’ subsidies. Stop this madness now | Dale Vince The evidence against the Drax power station is damning, yet the government wants to continue its massive public funding, says campaigner Dale Vince

Tree-burning #Drax power station is UK’s largest single source of CO₂ emissions—and a major air polluter.

Yet ludicrously, UK Gov pretends its emissions are zero.

Reports on its impact on primary forests have been covered up.

Ministers are being played. Again.

Great article by @dalevince.com

Northern Hemisphere forests now emit more carbon than they absorb. 🌲🔥 Using @esa.int SMOS satellite data, researchers from ESA Climate Change Initiative’s RECCAP-2 project uncovered this shift, driven by droughts, wildfires, and climate disruptions. Learn more: climate.esa.int/en/news-even...

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"Large live biomass carbon losses from droughts in the northern temperate ecosystems during 2016-2022". Nature Communications

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

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Drought and associated wildfires are the main reasons for the decline.

Although there is no implication that this is a permanent shift, six years of decline are long enough to warrant concern beyond the possibility that natural climate variability is responsible for the shift.

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There is so much discussion about TIPPING POINTS, yet there are so few current large-scale examples that have been demonstrated quantitatively.

Xiaojun Li et al show a remarkable shift from accumulating carbon in living biomass in the northern temperate regions to losing carbon since 2016.

Finally got around to reading the article, but couldn't see a link to the actual report it discusses. So here it is.

Plastic may be warming the planet more than we thought Most models haven’t accounted for how microplastics may increase global warming by disrupting natural cycles that store carbon.

We are often asked about the impact of plastics on carbon emissions and climate change.

There is limited information available, and the article below draws some information from the Plastics & Climate Project. Light reading.

www.washingtonpost.com/climate-envi...

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/...

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If you are looking for a postdoctoral position, here are two great opportunities to work with Julia Pongratz in Germany, great group, great science:

1. Postdoc for ecosystem-climate interactions:
job-portal.lmu.de/jobposting/8...

Should we call it forest loss while comparing to other drivers such as permanent deforestation? Although some burned forests might be converted to pastures, most will recover or be a degraded forest for a while. I realize it is commonly used to call it loss.

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Postdoc for modeling Carbon Dioxide Removal approaches

job-portal.lmu.de/jobposting/c...

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If you are looking for a postdoctoral position, here are two great opportunities to work with Julia Pongratz in Germany, great group, great science:

1. Postdoc for ecosystem-climate interactions:
job-portal.lmu.de/jobposting/8...

And 1991 was the Pinatubo eruption, also well studied for cooling off the planet.

Volume 12 Issue 4 | National Science Review | Oxford Academic Reviews cutting-edge science and technology developments in China and around the world, covering all of the natural sciences, including physics and mathematics, chemistry, life sciences, earth science...

The link to the special issue:

academic.oup.com/nsr/issue/12...

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Great achievement to see such a powerhouse in accounting methods, data collection, modeling capabilities, & most importantly, a vibrant and smart research community ready to play a big role in tracking and supporting China's progress towards decarbonization and the net-zero target

.one more...

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I am delighted to see the first special journal issue dedicated to China's GHG accounting and budgets from an incredibly strong research community there, well-connected, and contributing to the international efforts of the Global Carbon Project.

Improving land-use emission estimates under the Paris Agreement - Nature Sustainability Climate science and national emissions reporting communities have historically used different definitions and methods for anthropogenic land-based carbon removals. As the mitigation agenda accelerates...

📣 New Comment on Improving land-use emission estimates under the Paris Agreement in Nature Sustainability www.nature.com/articles/s41...

Land carbon removals are key on the path to net-zero.
Yet, confusion exists on what “anthropogenic” land-use C fluxes are.

#LULUCF #IPCC #ParisAgreement

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The 7 billion tonne gap!

Climate science & national emissions reporting use different definitions & methods to estimate anthropogenic land-based carbon removals.

This is no small issue, but what can we do about it?

www.nature.com/articles/s41... (sorry, shareable open link not yet published).

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We have a unique job opportunity to work on the GLOBAL METHANE BUDGET with the Global Carbon Project, in France.

Seeking a dynamic data expert to support the coordination and production of the next Global CH4 Budget.

If you are interested, drop an email to marielle.saunois@lsce.ipsl.fr

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Thanks to the many contributors for making this effort possible under the umbrella of the Global Carbon Project, and importantly, many thanks to Marielle Saunois for her leadership and synthesis effort.

www.globalcarbonproject.org/methanebudge...

Among many improvements and updates, the new budget has:

1. Reduced double-counting of inland waters (rivers, lakes, wetlands, reservoirs...)
2. A first-of-its-kind partition between anthropogenic and natural emissions from inland waters,
3. Increased use of satellite methane data

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The new Global Methane Budget is now published, open access.

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