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Chahan Kropf

@chahank

Climate Risk Scientist | Quantum Physicist | CLIMADA principal developer | Lecturer at ETH Zürich | Nature activist | Opinions my own |

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13.10.2025
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Latest posts by Chahan Kropf @chahank

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Are you working on #ecosystems, #climateextremes and #disturbanceregimes? Then submit your abstract to our #EGU26 session!

www.egu26.eu/session/57594

08.01.2026 13:31 👍 0 🔁 0 💬 0 📌 0
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First CLIMADA seminar “Why is my 1m resolution coastal flood data yielding near 0 building impacts ? A journey with data too coarse for your own good." by Dr. Samuel Juhel on the 21.01.26 at 14:30 (Zurich time)!

Zoom link will be shared over our mailing list. Registration at www.climada.ethz.ch .

08.01.2026 13:29 👍 0 🔁 0 💬 0 📌 0
Climate Risk, Modelling, and Impacts: A Collaborative Approach to Understanding and Addressing Climate Change

🌍 You don’t need to be a climate scientist to shape the future of our planet!
You need curiosity, perspective, and willingness to collaborate.

🧩Climate risk isn’t just numbers, it’s societies, ecosystems,
decisions, narratives, uncertainty, and the futures we imagine.

benasque.org/2026climate/

02.12.2025 18:01 👍 0 🔁 0 💬 0 📌 0
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Looking for peers to discuss #climaterisk modelling approaches? Then join the #CLIMADA community of practice on LinkedIn!

www.linkedin.com/groups/16011...

24.11.2025 18:32 👍 1 🔁 0 💬 0 📌 0
Climate Risk, Modelling, and Impacts: A Collaborative Approach to Understanding and Addressing Climate Change

Are you working on impacts of #climatechange? Then join us at the #Benasque unconference 20.09-03.10.26.
Open discussions for real solutions!

We welcome anyone interested from #socialscience, #naturalscience, #practitioners, #industry, #artists, #journalism

benasque.org/2026climate/

21.11.2025 18:11 👍 0 🔁 0 💬 0 📌 0
Is the Atlantic Ocean circulation close to tipping?
Is the Atlantic Ocean circulation close to tipping? YouTube video by Earth System Analysis - Potsdam Institute

Is the Atlantic Ocean circulation close to tipping?
Hear the latest science as I presented it last month at the ATLAS25 event in Helsinki.
Let me know if anything is unclear, or if you see good reasons why your government shouldn't immediately act on this. 🌊
youtu.be/ULJXqOZuY-8

16.11.2025 15:35 👍 403 🔁 208 💬 15 📌 33
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Fossil fuel lobbyists outnumber all Cop30 delegations except Brazil, report says One in every 25 participants at 2025 UN climate summit is a fossil fuel lobbyist, according to Kick Big Polluters Out

Assessments of government action on climate change—and public desire for climate action—should always explicitly consider how much cajoling and lobbying and pressure from oil and gas there is to do nothing.

This is a fight; not (just) a technological transition.

www.theguardian.com/environment/...

14.11.2025 13:11 👍 86 🔁 46 💬 5 📌 3
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CAT Global Update 2025 🚨 Ten years after the #ParisAgreement we see little to no measurable progress in warming projections - for the fourth consecutive year.
The 2035 #NDCs have made no difference to our warming outlook.
🔗 bit.ly/CAT_Global_2...

13.11.2025 10:01 👍 71 🔁 71 💬 3 📌 11
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Climate change particularly pronounced in Switzerland Switzerland will become drier and hotter, experience less snow and face heavier rainfall in the future. Those are the conclusions reached by climate researchers from its Federal Office of Meteorology ...

MeteoSwiss, ETH Zurich, and C2SM present the new Swiss climate scenarios.

These show how the Swiss climate will change if the global average temperature rises by 3 degrees. ethz.ch/en/news-and-...

@meteoschweiz.ch, @usyseth.bsky.social #klimaszenarien #meteoschweiz #ETH #C2SM #NCCS

04.11.2025 10:17 👍 23 🔁 10 💬 2 📌 1
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New study in Nature by Lin et al shows how the sea-level rise from the melting Ice Age ice (a total of 120 meters rise) ended thousands of years ago.
Until our fossil fuel use started a new phase of rising seas.
Graph shows the global mean rate of sea level rise.
🌊
www.nature.com/articles/s41...

03.11.2025 12:09 👍 284 🔁 115 💬 6 📌 9

🎉 We are thrilled to share that #SPARCCLE researcher Yann Quilcaille has been named to the TIME 100 Climate 2025 list - recognising global leaders driving real #ClimateAction.

Read the full interview: time.com/collections/...

Read his recent study published in Nature: #LinksInComments

31.10.2025 12:08 👍 1 🔁 1 💬 2 📌 0
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Congratulations to #IPCC Bureau Member, @soniaseneviratne.bsky.social on the German Environmental Award from German Federal Environmental Foundation - the first Swiss national to win the prestigious €500K Award. A powerful recognition of her global impact in land-climate science. 🌍👏 #ETHZurich

30.10.2025 19:47 👍 34 🔁 6 💬 0 📌 0
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Today, the UNFCCC released its #SynthesisReport, reviewing climate plans from 64 countries. Countries representing 64% of global emissions still have not formally submitted new #NDCs.

Full statement from Melanie Robinson 👉 bit.ly/3LcAWpM

28.10.2025 16:01 👍 1 🔁 1 💬 0 📌 0
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Invited perspectives: Fostering interoperability of data, models, communication, and governance for disaster resilience through transdisciplinary knowledge co-production Abstract. Despite considerable efforts and progress in increasing resilience to natural hazards, the adverse socio-economic impacts of extreme weather events continue to increase globally. As climate ...

📢 Invited Perspectives: Fostering #interoperability of data, models, communication, and #governance for disaster resilience through transdisciplinary knowledge #coproduction

The DIRECTED Project shares research insights!

👉 nhess.copernicus.org/articles/25/...

#DRM #CCA #disasterresilience

28.10.2025 14:53 👍 1 🔁 0 💬 0 📌 0
Storm hunters capture footage from inside the eye of Hurricane Melissa
Storm hunters capture footage from inside the eye of Hurricane Melissa YouTube video by The Independent

Insane footage from inside Hurricane Melissa!

m.youtube.com/watch?v=RGft...

28.10.2025 12:07 👍 1 🔁 0 💬 0 📌 1
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"Climate change impacts on ecosystems: Disturbance regimes, extreme weather, vulnerability, and resilience"

Join us at #EGU26! ITS2.6/BG10.9

28.10.2025 10:45 👍 3 🔁 1 💬 0 📌 0
Climate Risk, Modelling, and Impacts: A Collaborative Approach to Understanding and Addressing Climate Change

🌍 Join the Climate Risk, Modelling & Impacts workshop at the Benasque Science Center 🇪🇸 — Sept 20–Oct 3 2026.
Collaborative, open-format discussions on climate risk, modelling & adaptation.
Info & registration 👉 benasque.org/2026climate/

#ClimateRisk #ClimateScience #Adaptation

21.10.2025 08:56 👍 1 🔁 1 💬 0 📌 1
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Our global study on the state of trust in scientists is now out in Nature Human Behaviour! 🥳

With a team of 241 researchers, we surveyed 71,922 people in 68 countries, providing the largest dataset on trust in scientists post-pandemic 👇🧵https://www.nature.com/articles/s41562-024-02090-5

20.01.2025 10:16 👍 909 🔁 386 💬 24 📌 52
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Modelling marine heatwaves impact on shallow and upper mesophotic tropical coral reefs - IOPscienceSearch Modelling marine heatwaves impact on shallow and upper mesophotic tropical coral reefs, Nicolas Colombi, Chahan M Kropf, Friedrich A Burger, David N Bresch, Thomas L Frölicher

New study explores how marine heatwaves contribute to coral bleaching. While deeper coral reefs are often viewed as potential refuges from climate change, we suggest they often experience higher thermal stress and bleaching levels compared to shallow reefs iopscience.iop.org/article/10.1...

16.11.2024 08:37 👍 39 🔁 8 💬 2 📌 1
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Born into the Climate Crisis 2. An unprecedented life: Protecting children’s rights in a changing climate | Save the Children’s Resource Centre The climate crisis is not a distant threat; it is a pressing reality that children are facing today. Despite having contributed the least to the climate crisis, the inherent intergenerational injustic...

Will you live an unprecedented life?

In our new paper in @nature.com and accompanying @savethechildren.org report, we detect who will face unprecedented lifetime exposure to climate extremes (🧵) 1/n
Report: resourcecentre.savethechildren.net/document/bor...
Paper: www.nature.com/articles/s41...

12.05.2025 10:53 👍 69 🔁 51 💬 1 📌 4
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Reversal of the impact chain for actionable climate information - Nature Geoscience Providing actionable climate information requires an end-user focused approach that links specific local climate risk thresholds with global emissions pathways.

People need to plan for climate risks. The research is there, but the usability for stakeholders can be limited. We introduce the reversal of the impact chain approach for actionable climate information that allows linking local risk levels directly to GHG emission. www.nature.com/articles/s41...

03.01.2025 10:09 👍 82 🔁 24 💬 8 📌 8
Coastal ecosystem. Photo: Chor Tsang on Unsplash

Coastal ecosystem. Photo: Chor Tsang on Unsplash

🌪️🌍🌿 Tropical storms will challenge up to 9.4% of Earth’s terrestrial ecosystems, say researchers led by Chahan M. Kropf from @ethzurich.bsky.social 👉 usys.ethz.ch/en/news-even...

21.01.2025 14:09 👍 2 🔁 1 💬 0 📌 0
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Systematic attribution of heatwaves to the emissions of carbon majors - Nature Climate change made 213 historical heatwaves reported over 2000–2023 more likely and more intense, to which each of the 180 carbon majors (fossil fuel and cement producers) substantially contributed.

🚨 Important paper in Nature: "Systematic attribution of heatwaves to the emissions of carbon majors".

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

10.09.2025 17:40 👍 190 🔁 92 💬 7 📌 17
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This study is based on a great collaboration of our #TISP consortium and @simonameiler.bsky.social, Chahan Kropf, @samluethi.bsky.social and David N. Bresch (@ethz.ch). @colognaviktoria.bsky.social and I joined forces with them to combine our worldwide survey data with their climate modelling data 🤝

04.07.2025 09:04 👍 7 🔁 2 💬 1 📌 0

What if companies disclosed climate risk the same way insurers analyze it: with event-based probabilistic models that show what could happen, when, and with what likelihood?

Check out our new paper in Environmental Research: Climate to learn more!
iopscience.iop.org/article/10.1...

25.08.2025 17:04 👍 62 🔁 21 💬 3 📌 7
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160 scientists, 23 countries, 1 report: The Global Tipping Points Report 2025, together with @exeter.ac.uk, highlights mounting risks across Earth’s systems, from melting glaciers & ice fields to slowing ocean currents, ice sheets & rainforests under pressure. Watch now👇
👉global-tipping-points.org

13.10.2025 15:01 👍 462 🔁 226 💬 14 📌 18