Sea level rise is accelerating and is now rising at 4.5mm a year. A lot of further rise is now committed to and unavoidable, but a great deal is still under humanity’s control. New research helps show what is inevitable and what is our choice. drtomharris.substack.com/p/rising-con... #sealevelrise

Two studies show that the Arctic Ocean may have passed a tipping point leading to a near complete lack of fish. The first study reports on barren waters north of 82º while the second exposes the biochemical drivers. #climatechange #Arctic #seaice #tippingpoint #biochemistry #foodchain #carbonsink

A new study has assessed the time horizon for the Earth Energy Imbalance to stop rising and start to fall under a high mitigation scenario. The result is a delay more than 10 years longer than earlier estimates. doi.org/10.1029/2025... #climatechange #EEI #warming #emissions #pipeline

There's more energy arriving than leaving Earth due to rising greenhouse gas levels and this is warming #climate & this energy imbalance is growing - a new study led by Herve Douville uses an observed reconstruction to infer this trend will not reverse before the early 2040s: doi.org/10.1029/2025...

In this article, the new CMIP7 Emissions Scenarios reveal how much the world will rely on Carbon Dioxide Removal to stand any chance of holding to a 2ºC rise in temperature, let alone avoid a 3ºC world. drtomharris.substack.com/p/the-carbon... #climatechange #CMIP7 #emissions #CDR #SRM #IPCC

The Elephant in the Room - Why the average UK citizen is dragging around a five-tonne energy ghost. Today is the UK’s Overshoot Day. It is the day we officially "break the bank" of the UK’s share of the Earth's natural resource budget for the year. #sustainability #overshoot #ecology #resources

Are we using the wrong yardstick to assess climate risks? For decades Equilibrium Climate Sensitivity has been the gold standard, but hard to measure. But as we change other Earth systems, treating the response as just a CO₂ driven constant is inadequate. drtomharris.substack.com/p/anthropoge...

Coal burning is lowering the efficiency of solar power through air pollution blocking sunlight. This is not trivial either. In 2023 it caused a 5.8% reduction, equivalent to 111 TWh—the amount generated by 18 medium-sized coal-fired power plants. #solar #energytransition #coal #power #pollution

Stardust, the Solar Radiation Management, or Geoengineering, company has published details of its particle for the first time. Interesting NYT article on the debate this raises👇 www.nytimes.com/2026/05/14/c... #SRM #geoengineering #SAI #climatechange #climatestabilisation

Fascinating insights into research on the Doomsday Glacier👇 www.nytimes.com/2026/05/11/c...

Fact-check: Many scientists have been denying the 'acceleration' of global warming for years. Even now that their own evidence supports it, many are still downplaying it. The Earth's Energy Imbalance more than doubled. NASA's satellite data is not in line with models!

New studies have been published explaining the recent decline in Antarctic sea ice, the migration of warm Circumpolar Deep Water, the undermining of floating ice shelves and record breaking glacial retreat. drtomharris.substack.com/p/new-studie... #climatechange #Antarctica #sealevelrise #oceans

Following on from this article, here is an excellent interview with Tzeporah Berman, chair of the Fossil Fuel Non‑Proliferation Treaty Initiative about the summit. Well worth watching 👇 www.youtube.com/watch?v=Y822...

Hantavirus is making the headlines, while its climate change and land destruction that's driving its increasing prevalence. Infectious disease increases are just one of the consequences highlighted by the Institute of Actuaries recent report on the Wild Unknown. edition.cnn.com/2026/05/09/a...

The coming famine was heading our way before Hormuz, maybe its the final wake-up call? A new report spells out the coming nature and climate risks, and the societal and economic impacts. actuaries.org.uk/planetary-so... #nature #climatechange #foodsecurity #sustainability #risk #impacts #famine

Well worth a read 👇

What a great insight 👇

David Attenborough is 100 tomorrow 🥳 If he's been as big an influence on you as he has to me, sign his on-line Birthday card here: 38d.gs/zqga

Water Vapour is more powerful as a greenhouse gas than CO₂ and there is a lot more of it. So why is it not to blame for global warming? The answer is its an amplifier, not a baseline forcing. drtomharris.substack.com/p/why-do-we-... #climatechange #watervapour #hydrology #watercycle #feedback

The normalcy bias we're all experiencing for global sea-surface temperatures becomes apparent if we look at the graph of SSTs 1982-2026 and remove the last three years 2023, 2024, 2025 from the picture:

This is a must read 👇 Not the most uplifting post for a Friday afternoon, but an honest and well thought out assessment with sound and actionable advice. thehonestsorcerer.substack.com/p/the-persia... #iran #economy #crisis

👀 This should be front page news globally. The fact that it’s not speaks volumes about the capture of the media by vested interests. 57 countries, representing 1/3 of the world’s economy, met to phase out fossil fuels www.carbonbrief.org/santa-marta-... #climatechange #fossilfuels #energytransition

A physics-based analysis concludes that this year will be the warmest, not second warmest. In any case, we can learn something about climate change. See 2026 On Track for Warmest Year – mailchi.mp/caa/2026-on-... Also available on Substack: jimehansen.substack.com/p/2026-on-tr...

New AI Approach Reveals Ocean Currents in Unprecedented Detail. The new technique uses deep learning to recognise subtle patterns in ocean surface temperature caused by currents that conventional analysis can’t resolve. #oceans #currents #oceanography #models

Current economic theory and policy is catastrophically underestimating future climate damages. New reports show that far from continued indefinite GDP growth, within decades 50% of GDP could be destroyed. drtomharris.substack.com/p/climate-ri... #climatechange #economy #climatedamages #risk

Condensation trails (contrails) from aircraft produce a greenhouse heating effect only partially offset by their solar shading cooling & this dominates their warming influence on climate in the short term while their CO2 emissions leave a lasting legacy of heating theconversation.com/heres-what-w...

Methane emissions from sewer systems are much higher than thought. It was issued that low residence times were not conducive to methane formation, so IPCC and states assumed it was a negligible source. www.nature.com/articles/s44... #climatechange #methane #water #wastewater #wastemanagement

The Ember Global Electricity Review 2026 was published yesterday with some great news on renewable growth and declining fossil fuel use.  Key takeaways 🧵👇 Report: ember-energy.org/app/uploads/...  #energy #electricity #renewables #cleanenergy #fossilfuels #energytransition

This is what we face: "Scientists say a crucial Atlantic system is more likely to collapse than previously thought. But the billionaire death cult that steers humanity’s destiny doesn’t do existential crises" #climate #earth

Give nature a little helping hand this #EarthDay

A series of new AMOC studies have been published which greatly reduce the uncertainties involved in this most important of tipping elements. In this article I look at three critical questions then ask what, if anything can be done. drtomharris.substack.com/p/new-studie... #AMOC #climatechange

An interesting study links the prolonged volcanism in the Andean mountains between 7 and 5.4 million years ago to climatic cooling at the time. Paper: www.nature.com/articles/s43... #paleoclimate #volcano #volcanicash #oceanfertilisation #OIF

One to watch 👇

A new diagram has been developed which helps explain the relationship between temperature and carbon dioxide levels. These have been in lockstep for the last 66 million years as CO₂ controls temperature. drtomharris.substack.com/p/the-anthro... #climatechange #paleoclimate #carbondioxide #netzero

Carbon sinks do not just weaken, they flipp all over the place into sources... It's this principle that shows us that the terrestrial carbon sink is in the process to flip into Important: they can flip into large GHG sources Here the forest of Africa Several studies now #climate #earth

Super Typhoon Sinlaku just hit Cat 5 (~180 mph), now 2026’s strongest storm What stands out: • Rapid intensification • Exceptionally early (2nd earliest at this strength) • Supercharged by warm oceans Climate signals aren’t subtle anymore...

Methane is usually produced biologically under low oxygen levels. However a “Marine Methane Paradox” exists where significant ocean methane emissions occur in well oxygenated areas. www.pnas.org/doi/10.1073/... #methane #climatechange #oceans #feedback #stratification

Would you like to know more about the #AMOC risk? Here is a recent peer-reviewed, open-access review paper by 22 AMOC experts: wires.onlinelibrary.wiley.com/doi/10.1002/...

New study finds the "canary in the coal mine" for the #AMOC: a consistent decline of the western overturning circulation, down from 20 to 15 Sv during 2004-2023 at 26° N. 🌊 AMOC "could be at or near a critical tipping point, potentially leading to its collapse". www.science.org/doi/10.1126/...

This is an excellent short article about the shift we have caused to the stability of the climate system 👇 justdean.substack.com/p/human-caus...

In this new article I look at how attitudes in the field of Solar Radiation Modification are changing and examine its role in delaying passing the 2ºC upper Paris goal. #climatechange #geoengineering #SAI #SRM #CDR #Albedo #carbonbudget #tippingpoint drtomharris.substack.com/p/solar-radi...

@paulhbeckwith.bsky.social has now posted his video review of the second article that @umsonst.bsky.social and I posted on Ocean Stratification. This one covers the biochemical impacts of the changes underway in the World's oceans. www.youtube.com/watch?v=pyxe... #oceans #climatechange

Cumulative change in the mass of glaciers from all around the world - preliminary data just updated through 2025 ☹️ Information on methods: wgms.ch/products_ref...

@paulhbeckwith.bsky.social does a fantastic job of reviewing and explaining our "Great Decoupling" article 👇 Thanks Paul!

New research from Antarctic "blue ice" has extended our direct record of Earth’s atmosphere back 3 million years, providing a window into the Pliocene-Pleistocene Transition. #climatechange #paleoclimate #Antarctica #icecores #CO₂ #GHG #sealevelrise drtomharris.substack.com/p/what-can-3...

FACTCHECK: GB News / Spectator owner Paul Marshall got criticised by Christian leaders for his channel's attacks on climate action, so he made a rare public intervention But in his letter to the Guardian (pic) he makes 25 false, misleading or confused claims (!) Receipts etc in next post 1/2

I'm delighted to share that "The Great Decoupling" articles that @umsonst.bsky.social and I recently published on Substack, was discussed on Radio Ecoshock with Kevin Trenberth, Distinguished Scholar at the NCAR. Listen 👇 www.ecoshock.org/2026/03/your... #climatechange #oceans #stratification

I had a feeling this was going to happen. Sad news, especially given the poor state of sea ice after this winter. Looks like we won't be getting any more data for Arctic sea-ice thickness and volume for a while from PIOMAS. See: psc.apl.uw.edu/research/pro...

This is a sobering read👇 substack.com/inbox/post/1...

The changing vegetation in thawing permafrost is increasing overall emissions despite increased photosynthetic carbon dioxide sinking. A new study from the University of Tübingen studied thawing regions year round to unearth this finding. onlinelibrary.wiley.com/doi/10.1111/... #permafrost #methane