Carbon Brief have a thorough analysis of the latest Global Carbon Budget report for 2025 that provides a good summary of the findings and implications. Well worth reading, but here are some high/low lights 🧵👇 www.carbonbrief.org/analysis-fos... #emissions #carbonbudget #fossilfuels #landusechange

This is a very mature and sensible conversation on a difficult topic that more people should know about 👇

COP events drive the annual climate reporting season. The State of the Cryosphere 2025 report however, stands out. The report shows that critical thresholds have already been exceeded - its a must read. My summary and thoughts: drtomharris.substack.com/p/we-cannot-... #climatechange #cryosphere

How possible is it to rescue 1.5ºC? A new report timed for the start of COP30 from Climate Analytics and PIK sets out a revision of the IPCC AR6 1.5ºC scenario which they call Highest Possible Ambition. #climatechange #netzero #emissions #scenarios

Whilst its easy to get used to scary graphs, this one made me pause! The 2025 State of the Cryosphere report published yesterday has this one overlaying observations of #AMOC slowdown against model predictions. The report states that “AMOC shutdown appears all but inevitable”

More evidence of the strong aerosol masking effect was published today. A new Nature paper attributes 70% of the cloud reduction over the north Pacific and Atlantic to aerosol reductions. www.nature.com/articles/s41... #climatechange #aerosols #albedo #ECS #acceleration

As we navigate the explosion of Artificial Intelligence, there is a great deal of both hope and dread about its impact on the climate. In this article, Prof of Artificial Intelligence John MacIntyre and I carry out a deep dive into the issues.  drtomharris.substack.com/p/will-ai-sa...

The Global Average Sea Surface Temperature is now very similar to 2015. See if you can spot some regional differences: 1/2

What can coffins can tell us about climate? 2,200 years ago a wealthy soldier was buried in a grave on the frontier of the Han Dynasty territory in western China. Whilst the archaeology is interesting, the wood of his coffin is invaluable to dendrochronologists. www.science.org/content/arti...

If you ever thought science was too tame a career, how does kite skiing 4,000km across Antarctica over 3 months sound? #antarctica #adventure #expedition #science #climatechange

"An important predictor of future warming is Earth's energy imbalance [..] It is rising much more quickly than predicted by most climate models, possibly because of a darker planet corresponding to a large decrease in Earth's albedo which is near an all-time low "

A very good coffee break read on a busy Friday 👇 r3genesis.substack.com/p/200-how-re... #climatechange #naturebasedsolutions #climatesensitivity #weather #aerosols #geoengineering

The annual 10 new insights in climate science are here! Perhaps the best way to keep up with climate science news of the past year, made for lay people, policy makers and scientists alike with its different levels of detail: from simple tiles to a journal paper. 10insightsclimate.science#explore

Whilst a lot of what Bill Gates wrote in his memo makes a certain amount of sense, his main point that short term emissions reduction is not the priority is based on flawed and out of date data. I’ve scribbled on his graph below to add a very important line - reality. #climatechange #acceleration

WTF! It's just scaling up - non-linear increasing moisture transport over a fast warming maritime continent driven by e.g. event based peaking trade winds and tropical storm formation - it's also kind of synchronization of regional feedbacks with the NP MHW playing an increasing role...

Rapid warming from rising greenhouse gases + declining aerosol particle pollution are worsening extremes, depleting groundwater & limiting carbon uptake by land - #10ClimateInsights: 10insightsclimate.science

Whilst headlines quite rightly cover the devastation from Hurricane Melissa, a storm made more deadly through climate change, spare a thought for Vietnam where 1.7 meters (yes 5’7”) of rain fell in 24 hours. phys.org/news/2025-10... #climatechange #hurricane #Melissa #Jamaca #Vietnam #flooding

Worried about shutdown of the Atlantic overturning circulation #AMOC? The collapse of the subpolar gyre is a likely step on the way to that and could happen a lot sooner. Not quite as bad as full AMOC shutdown, but could bring major impacts already in 10-20 years. Important study on the mechanism ⬇️!

What was behind the 2024 record jump in atmospheric CO2 concentrations? A massive 20% of human emissions that should have been absorbed by the land and oceans was left in the atmosphere. drtomharris.substack.com/p/are-earths... #climatechange #co2 #emissions #carbonsinks #wildfires #enso #oceans

The construction industry’s carbon emissions are set to double by 2050, emitting enough CO2 to breach 2ºC by 2040 on their own, unless major changes are instigated.

For understanding climate change impacts to tropical cyclones in near-real time, explore our new attribution pages unique to each storm from @climatecentral.org: www.climatecentral.org/tropical-cyc... "Climate change made the ocean temperatures along Melissa's path 500 to 700 times more likely."

📣 The "U.S. Billion-Dollar Weather and Climate Disasters" data is back today through @climatecentral.org! And more soon! ➡️ Explore our new interactive website at www.climatecentral.org/climate-serv..., which is now updated through the first half of 2025 & totaling over $101 billion from 14 events.

Ten years ago the world agreed to limit temperatures to 2ºC by 2100, so it’s a little alarming to attend a conference discussing if its even possible to prevent breaching that limit by 2040. drtomharris.substack.com/p/conference... #climatechange #mitigation #impacts #tippingpoints #geoengineering

This week the WMO confirmed the 2024 atmospheric CO2 level and annual rise data. You may have seen headlines about it setting new records and concern about the planet’s ability to absorb our emissions. Here is why we should be extremely worried 👇🧵

Last month a paper on the limited availability of safe geological storage for CO2 got a lot of attention. A common comment was that it only looked at sedimentary rock, not basalt. A new study from Ireland provides an example of the basalt opportunity that exists alongside sedimentary storage.

Well worth watching 👇

Iron is the limiting nutrient at the very base of the ocean food web. It enables photosynthesis, is essential for all marine life and enables significant carbon capture. Fisheries, whaling and pollution reduce the available iron for these vital processes. drtomharris.substack.com/p/paying-the...

Coral reefs have passed their tipping point and new evidence suggests the Amazon will not be far behind. 2024 saw more forest destroyed through wildfires than even deforestation, accelerating the degradation of this vital habitat. doi.org/10.5194/bg-2... 
 #climatechange #tippingpoint #amazon

The 2025 Global Tipping Points Report published this week has dire news: Warm-water coral reefs, on which nearly a billion people and a quarter of all marine life depend, are passing their tipping point. Report: global-tipping-points.org #climatechange #tippingpoint #coralreef #Amazon #rainforest

A new study has identified unaccounted for aerosol emissions from forest trees. These large volatile organic compounds were not thought to contribute to secondary aerosol formation, but the new study shows a significant contribution. www.nature.com/articles/s43... #climatechange #aerosols #forests

Check out our new pre-print showcasing cutting-edge hi-res regional climate model simulations of Antarctica ❄️ Spoiler alert: they're pretty decent 😎 Link here: egusphere.copernicus.org/preprints/20...

A new review study examines four of the most dangerous climate tipping elements, confirming that they are destabilising. Risks are increasing that they will flip and not just in isolation. drtomharris.substack.com/p/are-we-hea... #tippingpoint #climatechange #feedback #greenland #AMOC #Amazon

A new paleoclimate study links stronger ocean stratification to past ‘lukewarm’ interglacials, but points to lower ocean carbon sequestration in the future. www.nature.com/articles/s41... #climatechange #oceans #stratification #sequestration #paleoclimate #interglacial

“Bivalve records are really amazing. They are like the tree rings of the sea. They offer a continuous, annually resolved record of ocean conditions.” New study finds #AMOC destabilization since 1950 "suggesting that the region is moving toward a tipping point."🌊 insideclimatenews.org/news/0310202...

A new study provides a critical and previously underestimated connection between Antarctic sea ice, cloud cover, and global warming. The work reduces uncertainty in models based on observations over the last four decades. esd.copernicus.org/articles/16/... #seaice #antarctica #climatechange #clouds

NEW: national climate commitments explained. In our latest video, Clover Hogan, conservationist Russell Reed, and CCAG’s Sir David King break down what countries must do to deliver real climate action. youtu.be/YNW85vj_yfc

Two recent reports, the Planetary Boundaries 2025 report and the Production Gap 2025 report shine a light on the insanity of our current trajectory. drtomharris.substack.com/p/insanity-i... #climatechange #planetaryboundaries #fossilfuels #emissions #productiongap #parisagreement #carbonliteracy

A new analysis from S&P Global shows the financial sector is waking up to the real dangers of climate change: Why Planning For A 2.3°C Warmer World Is Critical This Decade And Next. The report is well worth reading: www.spglobal.com/ratings/en/r... #climatechange #insurance #risk #economy

Sunday 9/28 at 10am PT: "+3ºC by 2050?!" with hosts Dan Miller & @LeonSimons8. On German Meteorological Society and Physical Society warning. @leonsimons.bsky.social @bikingmzstacey.bsky.social @radsci.bsky.social @climatechat.bsky.social

This is an interest and quite fun short read for the weekend on AI takeover. It might be less fun to re-read it again in 5-10 years time 👇 www.nature.com/articles/d41... #AI #singularity

Higher CO2 levels have been increasing tree size in the Amazon, potentially increasing carbon uptake but this may be short lived as larger trees can be more susceptible to climate change intensified heat & drought: www.nature.com/articles/s41...

The latest report from the Planetary Boundaries Science Lab at PIK has confirmed that Ocean Acidification has now been breached. This means that 7 of the 9 planetary boundaries have now been crossed. #planetaryboundaries #PIK #oceans #oceanacidification #climatechange

Despite what you may have heard, global warming is very real and demonstrated by looking at real satellite observations over the last quarter of a century. drtomharris.substack.com/p/a-deeper-d... #climatechange #globalwarming #CERES #EEI #albedo #greenhousegases #aerosols #clouds

Antarctic Sea Ice loss could be a tipping point after all. A new paper investigating the likely return of sea ice following CO2 removal shows that under some circumstances, the sea ice does not return. agupubs.onlinelibrary.wiley.com/doi/10.1029/... #antarctica #seaice #tippingpoint #stratification

NEW: Methane emissions could lock in 0.3°C of extra warming – pushing societies towards collapse. Our new report outlines proven, low-cost solutions across energy, agriculture, and waste that could cut emissions by 45% – protecting health, food and livelihoods.

The Caspian Sea is shrinking at record speed – water levels falling up to 30cm a year. Simon Goodman (Univ. of Leeds) warns this is a glimpse of climate risks we all face. These changes are here, now. We need forward-looking plans to adapt, and to act without delay.

"Every day from June to August 2025, at least one in five people on the planet felt a strong climate change influence." ⚠️ Check out the latest full seasonal report from @climatecentral.org on attributing temperatures around the world: www.climatecentral.org/report/peopl.... #OpenAccess #OpenData

A new field study has revealed unexpectedly high soil carbon emissions in wet tropical forests. The increased soil respiration increased CO2 emissions by between 42 and 204% depending on the terrain. www.nature.com/articles/s41... #climatechange #emissions #tropics #forests #feedback