Fascinating new paper by Isobel Parry on the impact of Stratospheric Aerosol Injection (SAI) on the well-being of the Amazon rainforest. GeoMIP6 models show increases in forest carbon relative to both unmitigated climate change and to conventional mitigation.
Sommes-nous en train de vivre le "superfreak pivot", ce moment où les conservateurs américains passent du climato-scepticisme à la promotion de la géo-ingénierie ?
Avec Sofia Kabbej, on revient sur deux rapports issus de think-tanks proches des Républicains :
420ppm.substack.com/p/un-deploie...
Paper out today on high-latitude low-altitude stratospheric aerosol injection (HiLLA-SAI). It's long, with literally 100s of sub-plots, so TL:DR: HiLLA-SAI is a polar-focused but still global intervention, with ~40-70% the global cooling efficiency of "normal" SAI
esd.copernicus.org/articles/17/...
🌟 Next up from the Climate Intervention Network: Annelot Broerze, who is completing her PhD at TU Delft. Watch below to learn more about the work she’s doing to explore both the physical and social elements of marine cloud brightening: youtu.be/G72u6O_R3fQ #CINstories
The US military has 22 sites in the UK.
Every day long range US bombers are taking off here to drop bombs on Iran.
This is a rogue state carrying out war crimes, and threatening more.
The UK Government must grow a spine - and stop our bases being used for this war.
SCOOP: Stardust Solutions, the U.S.-Israeli geoengineering startup, is making the world's most significant attempt at establishing a commercial enterprise for spraying reflective particles into the atmosphere to cool the planet. The company sold investors, raising $60 million last year. 🧵
right I'm going to go to bed, BUT NOT BEFORE GOING TO LOOK AT THE MOON OUT THE WINDOW AND PROBABLY TEAR UP AT THE IDEA THAT SOME PEOPLE ARE ON THEIR WAY THERE RIGHT NOW
Keep funding ARIA then!
screenshot of a resignation letter expressing sadness at leaving NASA
My resignation letter
A screenshot from the GridCarbon app showing the current UK power grid status: GB Grid Carbon Intensity 39gCO2/kWh Wind 23000 MW (55.6%) Solar 7500 MW (18.1%) Nuclear 4500 MW (10.8%) Biomass 1100 MW (2.8%) Other 1000 MW (2.5%) Netherlands 1000 MW (2.4%) Gas 970 MW (2.4%) France 940 MW (2.3%) Belgium 750 MW (1.8%) Denmark 200 MW (0.5%) Hydro 190 MW (0.5%) Ireland 150 MW (0.4%) 0MW for all of the following: Coal Northern Ireland Norway Oil Storage
If you're in the UK and thinking "huh, it really is pretty windy today isn't it?", yeah, wind is currently supplying more than 23GW of power, that's 55% of the current UK grid, and solar is currently covering another 18.1%.
Power from burning things (biomass and gas) is less than 8% right now.
Last week we hosted the 16th Annual Workshop of the Geoengineering Model Intercomparison Project (GeoMIP) at the The University of Tokyo. A great success and, as always, a pleasure and honor to represent this community, and to see over 100 participants from all over the world (every continent!)
BREAKING: University Center for Atmospheric Research (UCAR) files suit against NSF, OMB, NOAA and DOC to halt alleged "violations of the Constitution and Administrative Procedure Act" undertaken by agencies to dismantle Nat'l Center for Atmospheric Research. open.substack.com/pub/balanced...
NEW ANALYSIS: UK emissions fell 2.4% in 2025 as coal fell to a 400-year low. Incredibly, we used less coal last year than than in 1600, when Queen Elizabeth I was on the throne and Shakespeare was writing Hamlet.
All the details in our article: www.carbonbrief.org/...
On Friday, I'm talking with the head of Reflective, a nonprofit trying to accelerate the responsible research of solar radiation modification (SRM), ie, blocking some sunlight from reaching earth in order to cool the atmosphere. Geoengineering!
Got questions?
Also, yes, we did it! Boys just need to have fun sometimes, and thanks for the reviewers for being game (one of them did complain you do not “brew” CIDER so we had to rename one of the sections…)
gmd.copernicus.org/articles/19/...
We’ve been working for a few years now on a regional emulator capable of exploring different SRM strategies, capable of expanding the exploration space beyond the small set that Earth System models can provide. It’s here now! Presenting CIDER ➡️
Fair enough, solid group!
Maybe something on tipping elements, not sure I have a good non-review paper for that though. Mostly here to ask to share the final list!:)
I am running a Climate Dynamics reading group for UCI graduate students this Spring and would like to propose a list of accessible papers on "big ideas" in climate dynamics from the 21st Century, prioritizing primary sources over review papers.
Any suggestions of papers? (Self-promotion welcome!)
Discussion (24 Feb 2025) on the geopolitical and #security risks of climate change and solar #geoengineering #SRM
youtu.be/FeVWK48Y0e0?...
Not saying I like the lib dems, but as someone who lives somewhere with a serious tipping/littering issue, I'd vote for that policy...
Things should clear up for the morning commute once silicate weathering has been shut down for long enough that slowly accumulating volcanic CO2 catastrophically deglaciates the entire planet
On “The Intelligence” Oliver Morton and Catherine Brahic discuss a wild idea that is attracting ever more attention: using geoengineering to refreeze the Arctic. Listen now
I've even made my own version of the iconic Joy Division-style daily anomaly plot thats updated with 2026 data (to-date): dashboard.theclimate...
A reminder that this is on at 3pm UTC today, DM for the zoom link if you don't have it.
Great article, and thank you for highlighting the Arctic MCB work!
D & A style attribution with fair and HadCRUT5 updated to 2025 (emissions extrapolated beyond 2022, but should make little difference)
[code: github.com/chrisroadmap...
