Prof. Sonia I Seneviratne
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soniaseneviratne.bsky.social
Prof. Sonia I Seneviratne
@soniaseneviratne.bsky.social

Professor at ETH Zurich, IPCC WGI Vice-chair.
#Climate #Extremes #Land.
Citizen/mum/scientist. Personal account.
https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_Chapter11.pdf
Twitter/X: @SISeneviratne
https://www.iac.ethz.ch/people/sonia .. more

Sonia Isabelle Seneviratne is a Swiss climate scientist, professor at the Institute for Atmospheric and Climate Science of the ETH Zurich. She is a specialist of extreme climate events. .. more

Environmental science 61%
Geography 18%
Pinned
New starter pack with @ipcc.bsky.social #AR7 scientists (bureau, authors, REs)! Full list: apps.ipcc.ch/report/autho...
For SR cities scientists see separate starter pack!
@dianaurge.bsky.social @sherilee.bsky.social @siir-kilkis.bsky.social @janfuglestvedt.bsky.social
go.bsky.app/2FuXb3Y
Some reflections after returning back from a conference at which I and 20,000 colleagues learned that the Trump administration intends to dismantle #NCAR. This outrage should not happen. deepconvection.substack.com/p/save-ncar
Save NCAR
Field notes from New Orleans, where I and 20,000 colleagues learned that Trump intends to destroy the National Center for Atmospheric Research.
deepconvection.substack.com
If you are in the US and you would like to send a message to your elected representative about the proposed dissolution of the National Center for Atmospheric Research, @agu.org makes it easy with a template here: agu.quorum.us/campaign/151... #AGU25
Save NCAR from being dismantled today!
The Trump Administration has vowed to dissolve the center that provides critical extreme weather and climate data for our nation.
agu.quorum.us
Science has named the seemingly unstoppable growth of renewable energy worldwide as the 2025 Breakthrough of the Year.

Learn more about this year's #BOTY and other big advances in science: https://scim.ag/493Tpgx
Eos @eos.org · 8d
To help #SaveNCAR, read our update below and visit this @aguscipolicy.bsky.social page, where you can find email text and a call script to share with your representatives. agu.quorum.us/campaign/151...
Devastating and dangerous blow to the weather and climate community tonight, as 20,000 earth and space scientists meet at #AGU25.

New @ucs.org statement from @carlonimbus.bsky.social on the Trump administration plans to dismantle @ncar-ucar.bsky.social:

www.ucs.org/about/news/t...
Trump Administration Threatens to Dismantle Leading Climate and Weather Research Center
The Trump administration is threatening to dismantle one of the U.S.’ leading weather and climate research institutions.
www.ucs.org
NCAR is quite literally our global mothership.

Everyone who works in climate and weather has passed through its doors and benefited from its incredible resources.

Dismantling NCAR is like taking a sledgehammer to the keystone holding up our scientific understanding of the planet.

Unbelievable.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
www.usatoday.com
Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
bit.ly
🌡️ November 2025 was the third-warmest November on record globally, keeping 2025 on track to be the second- or third-warmest year recorded. The global three-year average temperature for 2023–2025 will likely exceed 1.5°C above pre-industrial levels for the first time. 

Read more ⬇️
In the world we live in today, that is 1.3C warmer due to our continued burning of fossil fuels, the extreme rainfall leading to disastrous flooding in many parts of Asia is up to 50 to 160% more intense - new @wwattribution.bsky.social study www.worldweatherattribution.org/increasing-h...
🗻🏘️On 28 May 2025, twenty million cubic meters of rock and ice buried the medieval village of Blatten and nearby settlements in the Swiss Lötschen valley. The disaster underlines the impact of climate warming on people and heritage.

👉Read the latest comment on this: www.nature.com/articles/s43...
The 2025 Blatten disaster in the Swiss Alps followed exceptional warming and highlights the vulnerability of people and heritage in glaciated landscapes - Communications Earth & Environment
On 28 May 2025, twenty million cubic metres of rock and ice buried the medieval village of Blatten and nearby settlements in the Swiss Lötschen valley. In the wake of the warmest decade since at least...
www.nature.com
The latest #climate update from Copernicus shows that 2025 is on course to be:

- joint 2nd warmest year, tied with 2023 and behind 2024 (warmest year)

- November 2025 was the 3rd warmest November globally

For more: climate.copernicus.eu/copernicus-2...

🌏🌡️⚒️🧪🌊
📣 #IPCC is calling for the nominations of authors for the Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture Utilization and Storage!

Find out more 👉 https://www.ipcc.ch/2025/11/19/calltficdrccus/

Submissions close 12 December 2025
The IPCC’s First Lead Author Meeting for AR7, is taking place in Paris this week. The French Minister for Europe and Foreign Affairs, Mr Jean-Noël Barrot welcomed around 600 authors from more than 100 countries to the Quai d’Orsay on Tuesday evening.

bit.ly/4ir09cC
📢 Working on land atmosphere-interactions and their role in shaping climate extremes?

🌍 Consider submitting an abstract to our European Geosciences Union (@egu.eu) 2026 session:

Land-atmosphere interactions and climate extremes (CL4.4): meetingorganizer.copernicus.org/EGU26/sessio...

Great start of @ipcc.bsky.social #AR7 main reports with 1st ever joint first lead author meeting (#LAM1) of Working Groups I, II & III! Fantastic atmosphere! Amazing organisation of technical support units, with >600 participants! We also had a get-together of the Switzerland-based participants!
Honoured to open @ipcc.bsky.social's first Lead Author Meeting for AR7 in Paris today. Congratulations to 600+ authors on their appointments—this marks the beginning of our scientific assessment. Thank you to France for generously hosting this historic meeting.

🔗 bit.ly/4ir09cC
📣 PRESS RELEASE

#IPCC authors meet in Paris 🇫🇷 to begin drafting the Seventh Assessment Report

More than six hundred experts appointed to the three Working Groups of the IPCC are gathering in Paris this week to draft IPCC’s Seventh Assessment Report.

🔗 bit.ly/4ir09cC
The @wcrpclimate.bsky.social - @ipcc.bsky.social co-sponsored workshop on high impact events and tipping points concluded on Friday - and only today for some of us! Really good work from a great number of colleagues. The workshp report will be published soon here www.wcrp-climate.org/wcrp-ipcc-2025
October 2025 was the warmest October on record for the #Arctic. Arctic sea-ice extent is currently the lowest on record for late November. My newest 'climate viz of the month' summarizes some of this latest data: zacklabe.com/climate-viz-...

#ClimateChange #SciComm #OpenScience #OpenData #DataViz
Climate Viz of the Month
October 2025 Hi everyone! Instead of designing a new special feature visualization, this next ‘climate viz of the month’ blog will focus on briefly summarizing the recent extremes in th…
zacklabe.com
COP30: "Best available science" = IPCC is back

The second draft "mutirão" text "recognises the centrality of equity and the best available science…as provided by the IPCC"
‪👏🏅8 of our D-USYS researchers at @ethz.ch
have been named Highly Cited Researchers 2025 by
@clarivate.com. This puts them in the Top 1% of the world's most influential scientists. What a great honour - for them and us as ETH department!

usys.ethz.ch/en/news-even...
D-USYS researchers among world's most influential in 2025
Erich Fischer, Nicolas Gruber, Lukas Gudmundsson, Reto Knutti, Andreas Prein, Martin Scheringer, Sonia Seneviratne, and Johan Six have been named
usys.ethz.ch
Ethiopia last year banned the import of new gasoline-powered cars. Nepal reduced import duties on EVs so much that they are now cheaper than cars with internal combustion engines. Brazil raised tariffs on car imports to compel Chinese automakers to set up plants inside Brazil. Etc
A Flood of Green Tech From China Is Upending Global Climate Politics
www.nytimes.com
‘It will never be forgiven’: UN climate chief warns world to act or face disaster

- “Not one single nation among you can afford this, as climate disasters rip double digits off GDP" says Simon Stiell

#COP30 #climatecrisis
www.theguardian.com/environment/...
‘It will never be forgiven’: UN climate chief warns world to act or face disaster
Faltering governments will be blamed for famine and conflict abroad, and face stagnation and inflation at home, says climate chief at start of Cop30
www.theguardian.com
Latest #Climate data shows a podium finish for 2025

We are in the decade where the 1.5°C limit is likely to be exceeded, highlighting the accelerating pace of climate change

Average global temperature for 2023–2025 is likely to exceed 1.5°C, the first three-year average to do so 🌡️🌏🧪⚒️
Why did GHG emissions rise?

50% of the increase was from land-use change, primarily due to more fires during El Niño. We expect this to drop in 2025. LUC is also very uncertain.

All other main regions, except EU27, with rising emissions in 2024.

2/
"Science is being destroyed across many agencies" say federal researchers.

For my latest @nature.com piece, I spoke to 19 different scientists across EPA, NOAA, NIH, NASA, and USGS to document how science is being dismantled across US federal agencies.
Dismantling of US federal agencies will ‘destroy science’
From NASA to the National Institutes of Health, federal agencies conduct research that universities cannot. Agency scientists speak out about the irreplaceable facilities, institutional knowledge and ...
www.nature.com
MeteoSchweiz, die @ethz.ch​ und C2SM präsentieren die neuen Schweizer Klimaszenarien.

Diese zeigen, wie sich das Schweizer Klima verändert, wenn die globale Mitteltemperatur z.B. um 3 Grad steigt.

#klimaszenarien #meteoschweiz #ETH #C2SM #NCCS
Die Schweizer Klimaszenarien 2025
MeteoSchweiz stellt in Zusammenarbeit mit der ETH Zürich und C2SM unter dem Dach des National Centre for Climate Services (NCCS) die neusten Erkenntnisse zum...
www.youtube.com
Future changes in irrigation will reduce dry-heat stress (without reversing GHG trend) and will substantially amplify moist-heat stress (strengthening GHG trend).

New study @natcomms.nature.com led by Yi Yao @hydr-vub.bsky.social and @usyseth.bsky.social

www.nature.com/articles/s41...
Compounding future escalation of emissions- and irrigation-induced increases in humid-heat stress - Nature Communications
This study shows that future exposures to moist-heat increase more rapidly than those to dry-heat, and irrigation can further amplify moist-heat-related health risks. Improving irrigation efficiency a...
www.nature.com