Are you a young academic working on climate and feel ready for a move? We are recruiting two Assistant/Associate Professors @granthamicl.bsky.social at Imperial College London @imperialcollegeldn.bsky.social (1/6)
“Europe's landscapes over the past more than 20 million years have predominantly been a mosaic: a mixture of grasslands, scrub and woodlands of varying density. A light-filled, flower-rich open woodland shaped by grazing animals as a decisive ecological force—not a dark closed-canopy forest.”
🌳 Puzzled by land-use emissions data?
➡️ The LULUCF Data Hub description paper now in discussion:
essd.copernicus.org/preprints/es...
🌍 The Hub is an open-access platform that compiles, harmonizes, and visualizes country-level CO₂ fluxes from land use, land-use change and forestry (LULUCF).
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Tuossa tekstissä myös implisiittisesti edetään argumentista, että fossiilisia päästöjä ei voi kompensoida maankäyttösektorin nieluilla, johtopäätökseen että maankäyttösektorin nettopäästöillä ei ole väliä. Maankäyttön päästöjen kompensoiminen pysyvillä nieluilla vasta kalliiksi tulisikin.
At risk of repeating myself: if you have a Twitter/X account then at least pause it. Tell organisations you work for/are involved in to stop posting there.
One week until Christmas Eve! 🎄
Here's how the frequency for white Christmases have changed over the last decades in Europe. 📉
Colors show how often there was snow on the ground at Christmas within each 30-year period, from 1951–1980 through 1995–2024.
Olin Asiastudio-podcastin vieraana juttelemassa mahdollisesta Atlantin kiertoliikkeen romahduksesta ja sen vaikutuksista. Paljon asiaa, eikä kaikkea tietenkään muistanut edes kertoa!
www.youtube.com/watch?v=lnRC...
It would be helpful to emphasise that the graph is showing time derivative of forcing, not the actual forcing itself. Could you perhaps show the annual forcing values side-by-side?
Jos otetaan huomioon myös historia ennen ihmistä, niin hapen aiheuttama massasukupuutto yli 2 miljardia vuotta sitten nostaisi hapen varmaan aika korkealle. en.wikipedia.org/wiki/Great_O...
The revised calculation regarding overestimated present-day forest-area for Sland makes sense. Could you just calculate Sland in a simpler way as a difference between
S3 and a simulation with historical changes in land cover and harvest rates but climate, N inputs and CO2 from preindustrial?
Announcement that the applications are open for the third Amsterdam Complexity School on Climate Change, with speakers including Clare Farrell, Ben Franta, Julia Steinberger, Vítor Vasconcelos, and Rachel Donald, with more to come!
I am beyond excited to announce that the applications are now open for the third Amsterdam Complexity School on Climate Change!
Come visit a beautiful city, hear from world-renowned experts, and work with passionate individuals on challenges related to climate change.
More info: acscc.nl
I will write more about this later, for now just to say our paper has been published today. 10 years after Paris Agreement we can conclusively say we have failed to limit warming to well below 2°C. What next?
www.cell.com/one-earth/ab...
a schematic diagram showing various processes and related indicators for monitoring carbon removal in ocean systems, based on analyzed literature. The diagram divides the processes into three categories represented by different colors: Blue Carbon (green): Focuses on processes related to carbon sequestration and the role of marine ecosystems in capturing and storing carbon. Artificial Upwelling (yellow): Depicts processes that involve artificial interventions in marine environments to increase carbon capture. Ocean Alkalinity Enhancement (blue): Illustrates methods that increase ocean alkalinity, which can help enhance carbon removal. The processes depicted in the diagram include: Carbon Sequestration Potential: This refers to the ability of oceans to capture and store carbon, with an indicator for monitoring this potential. Mineral Dissolution and Seawater Alkalinity Change: These processes are associated with changes in seawater chemistry, enhancing carbon sequestration through increased alkalinity. GHG Emissions: This represents the release of greenhouse gases, which can be measured to monitor the net carbon dynamics in the system. Carbon Removal Rates and Respiration: Shows how carbon is removed from the atmosphere and the role of respiration in this process, measured through carbon flux indicators. Primary Production and Water Masses Detection: This includes the detection of primary production (e.g., photosynthesis) in marine systems that leads to organic carbon formation. Sinking, Remineralization, and Burial: These processes involve the movement of carbon from the surface to deeper ocean layers, with some carbon remineralized and some buried in sediments. 🧪🌊
Marine CO₂ removal lacks standardized indicators to quantify carbon removed and environmental impacts. This absence of reliable metrics prevents verification, inhibits investment, and blocks entry into carbon trading systems.
iopscience.iop.org/article/10.1...
PhD opportunity in oceanography 🌊🌊🌊
"The role of the northwest Atlantic boundary current in the meridional overturning circulation". This is an @o-snap.org related study about the AMOC.
@marineinstitute.bsky.social
@oceanaccess.bsky.social
More information here: www.mi.mun.ca/media/marine...
The new UNEP report is out with the latest estimates of 2100 warming outcomes under current policies, NDCs, and net-zero targets. Here is how it compares to both the IPCC scenarios and other estimates (CAT and IEA, who will release their own updates soon!).
Wow! For long I have been thinking that such a coupled model would be cool, but I haven't come up with good set of research questions for it to write a proposal. I also have had spatial model in mind, but it's probably wise to start with an aggregated model.
The FRIDA overview paper: gmd.copernicus.org/articles/18/...
A coupled human-Earth IAM, with integrated climate impacts.
If you are interested in a postdoc position on the Stanford campus on the climate effects of a slowdown/shutdown of the Atlantic Meridional Overturning Circulation, please contact me.
Atmosphere or ocean modeling experience is a plus.
sustainablesolutions.stanford.edu/people/ken-c...
One of my staff asked an interesting question today; to what extent companies can #patent the ideas behind 'negative emission technologies'. Their reason for asking was a company filing a patent that covers many aspects of the use of ocean alkalinity enhancement for sequestering CO2.
Like all other CO₂ removal (CDR) techniques, significantly more research is needed over the next few decades to determine whether enhanced rock weathering is a viable method for CDR.
For nature and hiking, I would also suggest BC. Based on one short visit, Vancouver was also very nice city with beautiful views on the sea and mountains and functional transport system. As a city, Montreal was a great place to live, but Quebec's nature was quite similar to Finland.
Two curves show how the median is different depending on the scenario.
We finally have a new paper out looking at how summary statistics from the AR6 scenario database are highly dependent on the sampling of the database.
High profile statistics are often more representative of the model fingerprint, not the physics.
www.nature.com/articles/s41...
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I made a list (or 'starter pack') of Land Surface Modelers, because that's the kind of thing one does on #bluesky. Please tell your friends and also (v. important) TELL ME if you want to be added. We need more people here! go.bsky.app/Mw4tJ3t
Are you a highly motivated early-career researcher from a developing country or a country in transition, and want to be a Chapter Scientist in the next IPCC report?
Then here is your chance. Deadline 18 October 2025.
www.ictp.it/opportunity/...
New paper out. In which we helped the folks at the Allen Institute for AI (AI2) show that their climate emulator does a good (though not perfect) job at reproducing E3SMs' response to different SST boundary conditions.
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agupubs.onlinelibrary.wiley.com/doi/full/10....
Do you think climate science needs to be better communicated? We do too! That's why we are looking for a climate science communication specialist to join the Technical Support Unit of the IPCC Working Group I.
All details can be found here: www.ipcc.ch/2025/09/17/c...
Please share!
Thanks for the clarification! I appreciate the character limits, but I think it's good to include the assumption of current policies when giving the 97% certainty. It's important to also communicate that 2 °C is still (likely) avoidable if we implement proper mitigation policies.
