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Matthew Gidden @gidden.bsky.social · Sep 4

Our paper is out today in @nature.com where we assess a Prudent Planetary Limit for Geologic Carbon Storage:

www.nature.com/articles/s41...

A prudent planetary limit for geologic carbon storage - Nature

A risk-based, spatially explicit analysis of carbon storage in sedimentary basins establishes a prudent planetary limit of around 1,460 Gt of geological carbon storage, which requires making explicit ...

www.nature.com

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Prof. Stefan Rahmstorf @rahmstorf.bsky.social · Aug 29

Here is a reminder that already last year 44 experts directed a powerful warning to policy makers about the risk of #AMOC shutdown. What more can we do to get heard?
It’s like the saying that every disaster movie starts with scientists warning and being ignored.

Prof. Stefan Rahmstorf @rahmstorf.bsky.social · Oct 20

44 experts from 15 countries issued a stark warning about the dangers of crossing an ocean circulation tipping point. I had the honor to present it to the Icelandic 🇮🇸 climate minister Guðlaugur Þór Þórðarson yesterday. #AMOC
Full letter with signatories: en.vedur.is/media/ads_in...

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Prof Friederike Otto @frediotto.bsky.social · Aug 28

One of the strongest, clearest increases in likelihood & intensity, attributable to climate change, I've seen in a complex index like fire weather - the more intense & frequent events in Greece & Türkiye are already outpacing efforts to adapt.
www.worldweatherattribution.org/weather-cond...

map of the Aegean coast depicting change in vapour pressure deficit due to climate change

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Carbon Brief @carbonbrief.org · Aug 14

NEW – Factcheck: Trump’s climate report includes more than 100 false or misleading claims | @ayeshatandon.carbonbrief.org @leohickman.carbonbrief.org @ceciliakeating.carbonbrief.org @rtmcswee.carbonbrief.org @tomoprater.carbonbrief.org

Read here: buff.ly/AvcB7Aw

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Glen Peters @glenpeters.bsky.social · Jul 28

Based on fossil fuel growth rates from the IEA Coal Mid-Year Update, July Oil Market Report, & Gas Market Report Q3, fossil CO2 emissions would grow around 0.8% in 2025, reaching another record high...

We are only half way through the year, but don't build too much expectation for peak emissions.

Figure showing coal, oil, and gas emissions from 1960, with a little red dot for 2025, with 0.5% growth in coal, 1% in oil, 1.6% in gas, and -1.1% for cement. These are all leap year adjusted since 2024 had one more day than 2025...

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🌍⚖️ Sébastien Duyck @duycks.bsky.social · Jul 23

10/ 🔥Judge Iwasawa Yuji quotes straight from the IPCC: "Warming of 1.5°C is not considered 'safe' for most nations, communities, ecosystems and sectors, and poses significant risks to natural and human systems." - this is a very strong basis for the Court's legal conclusions!

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Grantham Institute - Climate Change and the Environment @granthamicl.bsky.social · Jul 15

⚠️Countries are taking large risks by relying so heavily on carbon dioxide removal to meet their climate goals.

Combined with inadequate near-term reductions, countries are potentially jeopardizing the Paris climate targets due to CDR, according to new research 🧵

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Grantham Institute - Climate Change and the Environment @granthamicl.bsky.social · Jul 15

💨The analysis, co-authored by Imperial scientists @rubenpruetz.bsky.social & @joerirogelj.bsky.social, finds substantial ambiguities in states' plans, with a heavy reliance and dependence on novel and conventional carbon dioxide removal, with its associated risks.

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Ruben Prütz @rubenpruetz.bsky.social · Jul 14

We need CDR. 🧩

But the ambiguity & lack of transparency regarding #CDR in states‘ climate plans jeopardize the PA. ❌

We unpack this issue by reviewing strategies of 70+ states concerning their CDR plans. 📑

👇 More in the thread by lead author Rupert Stuart-Smith & our study doi.org/10.1080/1469...

Rupert Stuart-Smith @rupertstuartsmith.bsky.social · Jul 14

🚨 Out now in @climate-policy.bsky.social: New research with @thomwetzer.bsky.social @rubenpruetz.bsky.social @joerirogelj.bsky.social Lavanya Rajamani, Marianne Wood and Ewan White: States are depending heavily on CO2 removal to meet climate targets, risking the Paris Agreement goal.

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Joeri Rogelj @joerirogelj.bsky.social · Jul 14

New research on limits to CO2 removal (CDR). CDR is key to our ambition to stop adding climate pollution to the atmosphere. Because it's uncertain how much will be delivered and it clearly comes with risks of social & environmental side-effects, legal issues arise. This paper provides an overview. 👇

Rupert Stuart-Smith @rupertstuartsmith.bsky.social · Jul 14

🚨 Out now in @climate-policy.bsky.social: New research with @thomwetzer.bsky.social @rubenpruetz.bsky.social @joerirogelj.bsky.social Lavanya Rajamani, Marianne Wood and Ewan White: States are depending heavily on CO2 removal to meet climate targets, risking the Paris Agreement goal.

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Rupert Stuart-Smith @rupertstuartsmith.bsky.social · Jul 14

Our new article is available open access here: www.tandfonline.com/doi/full/10....

@smithschool.ox.ac.uk @oxfordgeography.bsky.social @oxfordlawfac.bsky.social @pik-potsdam.bsky.social @granthamicl.bsky.social

Implications of states’ dependence on carbon dioxide removal for achieving the Paris temperature goal

Achieving the Paris Agreement’s long-term temperature goal of limiting global warming well below 2°C while pursuing efforts to limit it to 1.5°C requires rapid and sustained reductions in greenhous...

www.tandfonline.com

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Rupert Stuart-Smith @rupertstuartsmith.bsky.social · Jul 14

Legal analysis, in conjunction with the risks associated with CDR-dependent targets assessed here, could clarify states’ mitigation obligations under international law and facilitate progression past a risk-blind and indiscriminate use of scientific pathways in assessing states’ targets. More soon!

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Rupert Stuart-Smith @rupertstuartsmith.bsky.social · Jul 14

That previous work was published in @science.org and can be found here: www.science.org/doi/full/10....

www.science.org

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Rupert Stuart-Smith @rupertstuartsmith.bsky.social · Jul 14

To minimise risks associated with reliance on CO2 removal, states should prioritise pathways that minimise overshoot and dependence on removals to reach net-zero. Risks associated with high CDR dependence might render state action inconsistent with norms and principles of international law.

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Rupert Stuart-Smith @rupertstuartsmith.bsky.social · Jul 14

-- Reliance on international cooperation to deliver CO2 removal (e.g. via carbon trading mechanisms) is also common in states' plans and amplifies these risks.

-- Non-delivery of planned CO2 removal would raise global temperatures further, worsening the impacts of climate change.

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Rupert Stuart-Smith @rupertstuartsmith.bsky.social · Jul 14

-- There is pervasive lack of transparency and ambiguities in states' international reporting, with respect to how states intend to meet their climate targets.

-- However, dependence on high levels of CO2 removal is widespread and substantial risks to delivery of planned CO2 removal exist.

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Rupert Stuart-Smith @rupertstuartsmith.bsky.social · Jul 14

-- Inadequate near-term emission reductions are common, jeopardise the Paris climate targets and create substantial long-term dependence on CO2 removal to eliminate a temperature overshoot, with its associated risks.

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Rupert Stuart-Smith @rupertstuartsmith.bsky.social · Jul 14

🚨 Out now in @climate-policy.bsky.social: New research with @thomwetzer.bsky.social @rubenpruetz.bsky.social @joerirogelj.bsky.social Lavanya Rajamani, Marianne Wood and Ewan White: States are depending heavily on CO2 removal to meet climate targets, risking the Paris Agreement goal.

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Climate Action Tracker @climateactiontracker.org · Jul 9

#coal is on the way out and #solar is soaring, but wind is lagging behind.
Germany needs to
🎯 increase its target to Paris-compatibility
🎯 elevate climate policy to top of agenda
🎯 phase out fossil gas (not expand!)
🎯 focus on enabling a socially just transition

Analysis ➡️ bit.ly/CAT_GER

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Climate Action Tracker @climateactiontracker.org · Jul 9

Its plans for energy, transport & buildings sectors are concerning, as is the intention to use #Article6 carbon credits. It wants to:
❌ build new fossil gas power plants, locking in emissions
❌ retract EV sales target & weaken compliance on EU emissions standards
❌ increase aviation subsidies

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Climate Action Tracker @climateactiontracker.org · Jul 9

Supplying 60% of electricity, renewables expansion strong compared to other sectors & countries.
Germany has a well-developed climate policy framework & commitment to net zero by 2045, but target still not 1.5˚C compatible and new govt has no plans to increase action.
🔗 bit.ly/CAT_GER_poli...

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Climate Action Tracker @climateactiontracker.org · Jul 9

COUNTRY ANALYSIS: #Germany’s new govt coalition contract undermines climate policies, which will not meet the legally binding national climate targets under the Climate Change Act. Our projections see 2030 emissions higher than our previous update. Rating remains "Insufficient"
➡️ bit.ly/CAT_GER

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Prof. Stefan Rahmstorf @rahmstorf.bsky.social · Jul 5

Ein ausführliches Interview mit Fredi Otto und mir: was kommt beim Klima auf uns zu? Wie wird die Welt für unsere Kinder aussehen, wenn wir einfach so weitermachen wie bisher?

www.sueddeutsche.de/projekte/art...

Hitze? „Das ist wahrscheinlich einer der kältesten Sommer deines Lebens“

Wenn der Planet brennt und Sturmfluten normal sind: Ein Blick ins Jahr 2100 mit zwei führenden Klimawissenschaftlern.

www.sueddeutsche.de

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PIK_climate @pik-potsdam.bsky.social · Jul 1

An der Klimareferenzstation auf dem Telegrafenberg in Potsdam fiel im 1. Halbjahr 2025 so wenig Niederschlag wie noch nie seit Messbeginn 1893 – nur 146,8 mm. Im langjährigen Durchschnitt fallen an diesem Ort im ersten Halbjahr etwa 300 Millimeter.
👉 www.pik-potsdam.de/de/aktuelles...

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Hamish Beath @hamishbeath.bsky.social · Jun 12

🚨Excited to share my new paper published in ERL: "An exploration and evaluation framework for climate change mitigation scenarios with varying feasibility and desirability", co-authored with @shivmit.bsky.social @robinlamboll.bsky.social @joerirogelj.bsky.social tinyurl.com/yh3rspns (1/8)

An exploration and evaluation framework for climate change mitigation scenarios with varying feasibility and desirability - IOPscience

An exploration and evaluation framework for climate change mitigation scenarios with varying feasibility and desirability, Beath, Hamish, Mittal, Shivika, Lamboll, Robin, Rogelj, Joeri

iopscience.iop.org

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