Jon Moore

My final paper of my time at Exeter Uni has just been published today with @SpringerNature in @SciReports, with Arthur Argles & Peter Cox. We have developed an interesting theoretical hypothesis of forest demography we call "Demography Optimality". www.nature.com/articles/s41... (1/9)

A great video explainer by Critical Latitude about the weakening Atlantic Ocean overturning circulation and the risk of it passing a tipping point. #AMOC🌊 www.youtube.com/watch?v=39t1...

This deep dive on XKCD's famous comic on all modern infrastructure manages to be important, fascinating and more than a little bit scary all at the same time. Worth a scroll. And massive kudos to Germany for their sovereign tech fund, all countries should have one sheets.works/data-viz/hol...

The October runs for dynamical El Niño models are now all out, and its a mixed bag. Some revise the event downward, some upward, but on average its still expected to peak at ~4C, albeit with the peak more likely to occur in December than November:

Fires in France have now burned over 91,000 acres, by far the most of any year since the satellite record started in 2006. Current area burned is about 34x larger than this date in a typical (median) year:

New study published last week: Northern high latitudes could become a net carbon source below 2 °C global warming 🌍 See more here: doi.org/10.5194/esd-... With co-authors Eleanor Burke, Dan Hooke, @njsteinert.bsky.social, @mathisoncamilla.bsky.social & Luke Smallman.

If you believe that Cornwall should have a strong university campus, and that the centre for geography and environmental sciences should be protected, consider signing our open letter to the university leadership docs.google.com/document/d/1...

Why do some plants open their stomata at high temperatures? Our new paper shows that this behaviour is optimal, and a crucial thermoregulation strategy. 🍃 However, this only emerges when the leaf energy balance is fully integrated in the optimisation. This is missing from global models at present!

Something deeply troubling & shocking is happening at Exeter University*, where a mass cull of staff is planned, even though it's in surplus. No good justifications given. @jamesgdyke.info provides the details: www.technosphere.earth/the-bonfire-... *Disclosure: I have a Visiting Fellowship here. +🧵

Excellent open letter from the Exeter Lib Dems to the university about the proposed cuts. Really good to see us standing up for Unis as part of our community

Studied at Exeter for my BA/MA (History & Classics depts). Top of the line teaching and research, interlinked. Exeter remains one of the most productive UK universities in my own fields (early modern, social, maritime history). If Humanities here is up for cuts then what university is NOT at risk?

'What is perhaps remarkable about the Exeter cuts is that they are targeted at some of the university’s most successful departments, many of which turn over a profit even after they have made enormous and increasing contributions to the central university budget.' Read, rage and weep.

Sad indication of our times one of the best accounts on X correcting the rampant climate misinformation has been suspended due to mass reporting by deniers.

If a strong El Niño develops in 2026 (quite likely now), the main effects on global temps will be in 2027. This is because there is historically a lag of about three months between when El Niño peaks (generally in Nov/Dec) and when the biggest effect occurs:

🚨BREAKING🚨 The most recent RELATIVE Oceanic Niño Index (RONI) forecast shows we could be facing the strongest El Niño in observed history!! This could lead to dystopian global climate change impacts over the next 1.5 years. No one is prepared.

In this week's Frankly, Nate introduces the idea of “scenario thinking” as a practical strategy to reflect on and prepare for several versions of the future. youtu.be/vgq_6GIHmCA

Good news! The final ENTSO-E report into the Spain blackout is out A complex stew of different factors, but "too much solar" is simply not even among them, let alone a major component. As always: the narrative built by fossil/nuke advocates was wrong www.entsoe.eu/news/2026/03...

Great Channel 4 News report on the latest #AMOC monitoring. "Trouble is: there is now growing scientific consensus that the AMOC is weakening." @noc.ac.uk youtu.be/JpOpsMOBsL4?...

Quite an eye-opening video about the tech bros by the inimitable ClimateAdam. Watch it. youtu.be/py0XpKxAnNU

The US is threatening to invade a European country 🇪🇺. One small way to resist: use European alternatives to US big tech: european-alternatives.eu

This is the critical problem. By relying on US tech and trade we are almost totally trapped as a vassal of the US. UK plus Europe needs to rapidly start separating itself from the US and plan for the long term without them.

The superb science journalist Peter Hadfield debunks an attack on the met office by climate denying bloggers youtu.be/5IGnEbpCazw?...

Most 2025 global temperatures are now out (degrees C above 1850-1900 baseline) 1.41 HadCRUT5 1.44 Berkeley 1.46 JRA-3Q 1.47 Copernicus 1.53 DCENT-I NOAA and NASA GISS values will be public at 2pm UK time and but based on already public Jan-Nov data they will likely be between 1.3 and 1.4 degC.

How anyone can justify staying on X/twitter, I do not know.

In a new article over at Carbon Brief, I explore why the past three years – 2023, 2024, and 2025 – have been exceptionally warm. The main culprits turn out to be a combination of El Nino and internal variability, declining aerosols, and a strong solar cycle: www.carbonbrief.org/...

I have a new update to climate model-observation comparisons over at The Climate Brink, covering CMIP3, CMIP5, and CMIP6. Models perform well globally. The latest generation shows too much long-term warming but better reproduces recent trends: www.theclimatebrink....

Fascinating new paper from Joe Clarke et al., which addresses the question: could the climate-carbon system suffer a self-sustaining runaway feedback? @gsiexeter.bsky.social @ukceh.bsky.social @bolincentre.bsky.social esd.copernicus.org/articles/16/...

Maybe Keir should demand the heads of major US news networks any time they imply Britain is on the brink of civil war or that we live under sharia law. Or does it not work both ways?

Your daily dose of climate hope. From the team at RMI: rmi.org/wp-content/u...

Just published, a land-mark paper by Annemarie Eckes-Shephard et al.! It assesses the performance of a new generation of Demography-enabled Dynamic Global Vegetation (D-DGVMs), that attempt to simulate the changing size and age structure of trees in forests.

Our paper is now published! A inter-model evaluation at a variety of forest biomes of nine "state of the art" demographic vegetation models. Well done @annemarie-es.bsky.social and @tompugh.bsky.social for leading this endeavour! nph.onlinelibrary.wiley.com/doi/10.1111/...

We don't make viral cat or police chase videos, but do provide free in-depth conversations with world leading climate experts. Please subscribe to Climate Chat. We're almost passing 5,000 🎉 youtube.com/@climatechat

The true question right now is whether you believe in the moral character of the British public. If you do, you'll want to have the fight with Reform. You'll believe that the public will hate the idea of breaking up families, spying on & deporting people who've worked here for years.

NEW – Experts: Which climate tipping point is the most concerning? | @ceciliakeating.carbonbrief.org @rtmcswee.carbonbrief.org @ayeshatandon.carbonbrief.org Read here: buff.ly/LkitgK7

So excited to finally share our new paper charting the global spectrum of tree crown architecture, out today at @natcomms.nature.com ‬🧪🌐 Paper link 🔗: www.nature.com/articles/s41... A brief thread of what we found 🧵

Very good as ever from @richardjmurphy.bsky.social If every country in the world is in debt, who are they in debt to? Answer wealthy private individuals and pension funds. www.youtube.com/watch?v=Eh3i...

🌳🛰️ Our groundbreaking Biomass satellite lifted off on Vega-C #VV26 from Europe’s Spaceport in French Guiana at 10:15 BST/11:15 CEST on 29 April. The satellite is designed to provide unprecedented insights into the world’s forests and their crucial role in Earth’s carbon cycle.

CCS is not a serious solution Promised for decades Used small-scale for oil recovery—even then, most CO₂ is not captured Energy models assume 90% capture by default. We all know that’s a myth. These assumptions must change to stop misguided takes like this. www.theguardian.com/environment/...

To me the Tony Blair institute said quite a few reasonable things but the emphasis on removal over "short-term" emissions cuts, is at best bad choice of words or worst an unrealistic "have your cake and eat it" fantasy.

Well this is a tad worrying..... academic Prof Murphy explains why the Trump administration may seek to declare a state of emergency and end democracy within months.

Whenever I post about climate, skeptical folks inevitable respond with this graph. So I decided to do something radical: actually read the underling scientific paper and ask the authors. As it turns out, it actually says the opposite of what skeptics claim: www.theclimatebrink....

The claim to have never hurt anyone reminded me of this quote. Calculated like this Musk is a mass murderer.

Genuine question, is Bluesky getting less engagement now? My sense is that after the flurry of activity here post-US election things have got quieter again.

Agree Tom, I can think of cases where admin support roles were meant to reduce academics workload but instead increased it. Not all admin is bad though, put talented people in the right roles and it can be of great benefit but sadly not always the case.

"Carbon dioxide removal is ... so expense that ... there is no logical reason why people would be doing it instead of mitigation (when they can do mitigation)" @hausfath.bsky.social I agree 100%, but why do so many ask about CDR? 1/

Am I missing something... even if you accept the rhetoric about getting people back to work and avert your eyes from the cruelties that will doubtless result, why is the govt attacking the Personal Independence Payment? It's not an out-of-work benefit.