Yann Quilcaille
@yannquilcaille.bsky.social
Climate scientist. Postdoc at @usyseth.bsky.social, former postdoc at @iiasa.ac.at
Speciality: #climate, #emulators, #extremes, interface human/Earth systems
#TIME100Climate
LinkedIn: YannQuilcaille
(X/Twitter: @YQuilcaille)
Posts are my own.
Speciality: #climate, #emulators, #extremes, interface human/Earth systems
#TIME100Climate
LinkedIn: YannQuilcaille
(X/Twitter: @YQuilcaille)
Posts are my own.
Pinned
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.
www.nature.com
🚨 Important paper in Nature: "Systematic attribution of heatwaves to the emissions of carbon majors".
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Yann Quilcaille
We are thrilled to share that @yannquilcaille.bsky.social, Postdoctoral Researcher at @ethz.ch, has been named to the TIME100 Climate List 2025 - recognizing the world’s most influential leaders driving real climate action.
Congratulations, Yann! 🌍👏
go.ethz.ch/37
Congratulations, Yann! 🌍👏
go.ethz.ch/37
Yann Quilcaille: The 100 Most Influential Climate Leaders of 2025
Find out why Yann Quilcaille is on TIME's 2025 list of the 100 most influential leaders driving business climate action.
go.ethz.ch
October 30, 2025 at 12:33 PM
We are thrilled to share that @yannquilcaille.bsky.social, Postdoctoral Researcher at @ethz.ch, has been named to the TIME100 Climate List 2025 - recognizing the world’s most influential leaders driving real climate action.
Congratulations, Yann! 🌍👏
go.ethz.ch/37
Congratulations, Yann! 🌍👏
go.ethz.ch/37
I'm proud to be part of the 2025 #TIME100Climate list of influential leaders.
Link to the full list of 2025 #TIME100Climate
time.com/collections/...
Link to my page in the 2025 #TIME100Climate
time.com/collections/...
Link to the full list of 2025 #TIME100Climate
time.com/collections/...
Link to my page in the 2025 #TIME100Climate
time.com/collections/...
Yann Quilcaille: The 100 Most Influential Climate Leaders of 2025
Find out why Yann Quilcaille is on TIME's 2025 list of the 100 most influential leaders driving business climate action.
time.com
October 30, 2025 at 3:12 PM
I'm proud to be part of the 2025 #TIME100Climate list of influential leaders.
Link to the full list of 2025 #TIME100Climate
time.com/collections/...
Link to my page in the 2025 #TIME100Climate
time.com/collections/...
Link to the full list of 2025 #TIME100Climate
time.com/collections/...
Link to my page in the 2025 #TIME100Climate
time.com/collections/...
Reposted by Yann Quilcaille
As it so happens, the first comprehensive review of end-to-end impact attribution studies on human health - the highest evidence standard in climate science - is out today: www.nature.com/articles/s41...
September 17, 2025 at 6:12 PM
As it so happens, the first comprehensive review of end-to-end impact attribution studies on human health - the highest evidence standard in climate science - is out today: www.nature.com/articles/s41...
Reposted by Yann Quilcaille
Nearly one-quarter of heatwaves would have been ‘virtually impossible’ without global warming — and can be attributed to the emissions of individual energy producers
go.nature.com/3Kir39u
go.nature.com/3Kir39u
Dozens of heatwaves linked to carbon emissions from specific companies
Nature - Nearly one-quarter of heatwaves would have been ‘virtually impossible’ without global warming — and can be attributed to the emissions of individual energy producers.
go.nature.com
September 14, 2025 at 12:39 PM
Nearly one-quarter of heatwaves would have been ‘virtually impossible’ without global warming — and can be attributed to the emissions of individual energy producers
go.nature.com/3Kir39u
go.nature.com/3Kir39u
Reposted by Yann Quilcaille
Es ist eine grosse Ehre, den 2025 Deutschen Umweltpreis zu erhalten! Danke an alle meine jetzigen und ehemaligen Gruppenmitglieder und viele Kolleg:innen!
@lukasgudmundsson.bsky.social @yasserhaddad.bsky.social @yannquilcaille.bsky.social @michaelgwindisch.bsky.social @usyseth.bsky.social
@lukasgudmundsson.bsky.social @yasserhaddad.bsky.social @yannquilcaille.bsky.social @michaelgwindisch.bsky.social @usyseth.bsky.social
Ausgezeichnet!🏆Mit dem Deutschen Umweltpreis 2025 von der DBU #uwp25 werden die Klimaforscherin @soniaseneviratne.bsky.social @ethz.ch & das Geschäftsführungsduo Lars Baumgürtel und Dr. Ing. Birgitt Bendiek des Stahlverzinkungsunternehmens ZINQ geehrt. buff.ly/QEDIjX0
September 12, 2025 at 7:18 AM
Es ist eine grosse Ehre, den 2025 Deutschen Umweltpreis zu erhalten! Danke an alle meine jetzigen und ehemaligen Gruppenmitglieder und viele Kolleg:innen!
@lukasgudmundsson.bsky.social @yasserhaddad.bsky.social @yannquilcaille.bsky.social @michaelgwindisch.bsky.social @usyseth.bsky.social
@lukasgudmundsson.bsky.social @yasserhaddad.bsky.social @yannquilcaille.bsky.social @michaelgwindisch.bsky.social @usyseth.bsky.social
Reposted by Yann Quilcaille
A paper in Nature suggests a quarter of heatwave events from 2000-23 would have been near impossible without anthropogenic climate change. The paper also indicates that major carbon emitters are responsible for around 50% of the increase in intensity of these events. ⚒️ 🧪
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.
go.nature.com
September 11, 2025 at 1:11 PM
A paper in Nature suggests a quarter of heatwave events from 2000-23 would have been near impossible without anthropogenic climate change. The paper also indicates that major carbon emitters are responsible for around 50% of the increase in intensity of these events. ⚒️ 🧪
Reposted by Yann Quilcaille
Spoke to @yannquilcaille.bsky.social and @soniaseneviratne.bsky.social about their new study in Nature.
They finds dozens of heat waves would be "virtually impossible" without the activity of major fossil fuel producers.
Read on ⬇️ @npr.org to learn about their methodologies + why the work matters.
They finds dozens of heat waves would be "virtually impossible" without the activity of major fossil fuel producers.
Read on ⬇️ @npr.org to learn about their methodologies + why the work matters.
Scientists link hundreds of severe heat waves to fossil fuel producers' pollution
A new study finds dozens of heat waves would be "virtually impossible" without the activity of major fossil fuel producers, including oil companies.
www.npr.org
September 11, 2025 at 3:25 PM
Spoke to @yannquilcaille.bsky.social and @soniaseneviratne.bsky.social about their new study in Nature.
They finds dozens of heat waves would be "virtually impossible" without the activity of major fossil fuel producers.
Read on ⬇️ @npr.org to learn about their methodologies + why the work matters.
They finds dozens of heat waves would be "virtually impossible" without the activity of major fossil fuel producers.
Read on ⬇️ @npr.org to learn about their methodologies + why the work matters.
Reposted by Yann Quilcaille
Congrats to @soniaseneviratne.bsky.social and colleagues for this important new paper
www.nature.com/articles/s41...
www.nature.com/articles/s41...
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.
www.nature.com
September 10, 2025 at 8:40 PM
Congrats to @soniaseneviratne.bsky.social and colleagues for this important new paper
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Yann Quilcaille
This important work is very consilient with our attribution of extreme heat to carbon majors in @nature.com earlier this year: tinyurl.com/nhffeezv
It is a great thing for science when independent groups with independent methods come to the same conclusions.
It is a great thing for science when independent groups with independent methods come to the same conclusions.
September 10, 2025 at 8:56 PM
This important work is very consilient with our attribution of extreme heat to carbon majors in @nature.com earlier this year: tinyurl.com/nhffeezv
It is a great thing for science when independent groups with independent methods come to the same conclusions.
It is a great thing for science when independent groups with independent methods come to the same conclusions.
Excellent thread by @ccallahan45.bsky.social !
🚨📈 Over the last 6 months a series of papers has advanced our understanding of the culpability of fossil fuel firms for climate change impacts. In April, @jsmankin.bsky.social and I showed that economic damages from rising extreme heat can be linked to companies like Exxon and Chevron. rdcu.be/ei0T5
Carbon majors and the scientific case for climate liability
Nature - A transparent and reproducible scientific framework is introduced to formalize how trillions in economic losses are attributable to the extreme heat caused by emissions from fossil fuel...
rdcu.be
September 11, 2025 at 4:47 AM
Excellent thread by @ccallahan45.bsky.social !
Reposted by Yann Quilcaille
In our new paper @nature.com led by @yannquilcaille.bsky.social, we systematically quantify how each of the 180 carbon majors contributed to the increased probability and intensity of 213 individual heatwaves 🧵
www.nature.com/articles/s41...
www.nature.com/articles/s41...
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.
www.nature.com
September 10, 2025 at 6:54 PM
In our new paper @nature.com led by @yannquilcaille.bsky.social, we systematically quantify how each of the 180 carbon majors contributed to the increased probability and intensity of 213 individual heatwaves 🧵
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Yann Quilcaille
NEW: a first-ever study has directly tied heatwaves to the world's biggest climate polluters
each of these "carbon majors"—including Shell, ExxonMobil, and BP—has made between 16 and 53 otherwise impossible heat waves since 2000 possible.
@humbertobasilio.bsky.social for @atmosmag.bsky.social 🧪🌎
each of these "carbon majors"—including Shell, ExxonMobil, and BP—has made between 16 and 53 otherwise impossible heat waves since 2000 possible.
@humbertobasilio.bsky.social for @atmosmag.bsky.social 🧪🌎
New Study Links 174 Companies to Deadly Heat Waves | Atmos
A first-of-its-kind study directly ties corporate emissions from oil, gas, and coal producers to rising heat waves worldwide.
atmos.earth
September 10, 2025 at 3:49 PM
NEW: a first-ever study has directly tied heatwaves to the world's biggest climate polluters
each of these "carbon majors"—including Shell, ExxonMobil, and BP—has made between 16 and 53 otherwise impossible heat waves since 2000 possible.
@humbertobasilio.bsky.social for @atmosmag.bsky.social 🧪🌎
each of these "carbon majors"—including Shell, ExxonMobil, and BP—has made between 16 and 53 otherwise impossible heat waves since 2000 possible.
@humbertobasilio.bsky.social for @atmosmag.bsky.social 🧪🌎
Reposted by Yann Quilcaille
Nature research paper: Systematic attribution of heatwaves to the emissions of carbon majors
go.nature.com/46gmxjh
go.nature.com/46gmxjh
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.
go.nature.com
September 10, 2025 at 3:15 PM
Nature research paper: Systematic attribution of heatwaves to the emissions of carbon majors
go.nature.com/46gmxjh
go.nature.com/46gmxjh
🚨 Important paper in Nature: "Systematic attribution of heatwaves to the emissions of carbon majors".
www.nature.com/articles/s41...
www.nature.com/articles/s41...
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.
www.nature.com
September 10, 2025 at 5:41 PM
🚨 Important paper in Nature: "Systematic attribution of heatwaves to the emissions of carbon majors".
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Yann Quilcaille
Using years of experience in attribution science, a comprehensive study that links heat waves to individual emitters (ie fossil fuel producers) has just been published by @yannquilcaille.bsky.social et al. A systematic step forward as highlighted in my @nature.com News&Views article:
rdcu.be/eFpWu
rdcu.be/eFpWu
Heatwaves linked to emissions of individual fossil-fuel and cement producers | Nature
The emissions of leading fossil-fuel and cement producers have been systematically linked to particular heatwaves. Three scientists discuss the methodology behind the result and its potential impact on climate-liability court cases. The emissions of leading fossil-fuel and cement producers have been systematically linked to particular heatwaves. Three scientists discuss the methodology behind the result and its potential impact on climate-liability court cases.
rdcu.be
September 10, 2025 at 5:00 PM
Using years of experience in attribution science, a comprehensive study that links heat waves to individual emitters (ie fossil fuel producers) has just been published by @yannquilcaille.bsky.social et al. A systematic step forward as highlighted in my @nature.com News&Views article:
rdcu.be/eFpWu
rdcu.be/eFpWu
Reposted by Yann Quilcaille
Hot off the press: We can provide for the first time a systematic attribution of recent #heatwaves to the emissions of #carbon_majors. Essential new #Nature article coordinated by @yannquilcaille.bsky.social at @ethz.ch, with numerous contributors @usyseth.bsky.social:
www.nature.com/articles/s41...
www.nature.com/articles/s41...
www.nature.com
September 10, 2025 at 3:12 PM
Hot off the press: We can provide for the first time a systematic attribution of recent #heatwaves to the emissions of #carbon_majors. Essential new #Nature article coordinated by @yannquilcaille.bsky.social at @ethz.ch, with numerous contributors @usyseth.bsky.social:
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Yann Quilcaille
NEW – Study links world's top oil and gas firms to 200 'more intense' heatwaves | @ayeshatandon.carbonbrief.org w/ comment from Dr Rupert Stuart-Smith @yannquilcaille.bsky.social Dr Christopher Callahan @jsmankin.bsky.social @frediotto.bsky.social
Read here: buff.ly/xXpKdty
Read here: buff.ly/xXpKdty
September 10, 2025 at 3:25 PM
NEW – Study links world's top oil and gas firms to 200 'more intense' heatwaves | @ayeshatandon.carbonbrief.org w/ comment from Dr Rupert Stuart-Smith @yannquilcaille.bsky.social Dr Christopher Callahan @jsmankin.bsky.social @frediotto.bsky.social
Read here: buff.ly/xXpKdty
Read here: buff.ly/xXpKdty
Reposted by Yann Quilcaille
Out now: our new study shows that climate change caused nearly 1,700 heat-related deaths in Zürich over 50 years.
We assessed the effects of changing vulnerability to heat, heat-mortality within and outside of heatwaves, and the contribution of individual companies' emissions to heat deaths.
We assessed the effects of changing vulnerability to heat, heat-mortality within and outside of heatwaves, and the contribution of individual companies' emissions to heat deaths.
September 10, 2025 at 8:47 AM
Out now: our new study shows that climate change caused nearly 1,700 heat-related deaths in Zürich over 50 years.
We assessed the effects of changing vulnerability to heat, heat-mortality within and outside of heatwaves, and the contribution of individual companies' emissions to heat deaths.
We assessed the effects of changing vulnerability to heat, heat-mortality within and outside of heatwaves, and the contribution of individual companies' emissions to heat deaths.
Reposted by Yann Quilcaille
The Trump administration has announced that the US will rewrite past climate reports, in a clear attempt to erase scientific history and undermine the consensus on human-caused climate change.
US to rewrite its past national climate reports
US President Donald Trump's administration is revising past editions of the nation's premier climate report -- its latest move to undermine the scientific consensus on human-caused global warming.
www.france24.com
August 8, 2025 at 6:26 AM
The Trump administration has announced that the US will rewrite past climate reports, in a clear attempt to erase scientific history and undermine the consensus on human-caused climate change.
Reminder, deadline for submission of abstracts at the CMIP2026 workshop on the 13 August.
cmip2026.org/programme/ab...
cmip2026.org/programme/ab...
Submit your abstract for CMIP 2026 - CMIP Community Workshop 2026
The call for abstracts for CMIP26 is now open! The deadline for abstract submission is 12:00 UTC, 13 August 2025.
cmip2026.org
August 8, 2025 at 10:18 AM
Reminder, deadline for submission of abstracts at the CMIP2026 workshop on the 13 August.
cmip2026.org/programme/ab...
cmip2026.org/programme/ab...
Must read.
Summary: based on 5000 years of history, 400 civilizations, they collapse due to the rise in inequalities. Given the trajectories of today's societies, there is a high risk of critical collapse. Unless we go back to real democracy & refuse domination.
www.theguardian.com/environment/...
Summary: based on 5000 years of history, 400 civilizations, they collapse due to the rise in inequalities. Given the trajectories of today's societies, there is a high risk of critical collapse. Unless we go back to real democracy & refuse domination.
www.theguardian.com/environment/...
‘Self-termination is most likely’: the history and future of societal collapse
An epic analysis of 5,000 years of civilisation argues that a global collapse is coming unless inequality is vanquished
www.theguardian.com
August 2, 2025 at 2:37 PM
Must read.
Summary: based on 5000 years of history, 400 civilizations, they collapse due to the rise in inequalities. Given the trajectories of today's societies, there is a high risk of critical collapse. Unless we go back to real democracy & refuse domination.
www.theguardian.com/environment/...
Summary: based on 5000 years of history, 400 civilizations, they collapse due to the rise in inequalities. Given the trajectories of today's societies, there is a high risk of critical collapse. Unless we go back to real democracy & refuse domination.
www.theguardian.com/environment/...
Reposted by Yann Quilcaille
🔥🔥New IIASA research shows that addressing social & economic vulnerability will be a key factor in mitigating the scale of financial damage due to wildfires & emphasizes sustainable development as essential to reducing climate-related impacts.
👉 iiasa.ac.at/news/jul-202...
@yilinghwong.bsky.social
👉 iiasa.ac.at/news/jul-202...
@yilinghwong.bsky.social
July 31, 2025 at 10:40 AM
🔥🔥New IIASA research shows that addressing social & economic vulnerability will be a key factor in mitigating the scale of financial damage due to wildfires & emphasizes sustainable development as essential to reducing climate-related impacts.
👉 iiasa.ac.at/news/jul-202...
@yilinghwong.bsky.social
👉 iiasa.ac.at/news/jul-202...
@yilinghwong.bsky.social
New publication, bringing much needed clarification on how to properly calculate the Canadian Fire Weather Index based on climate projections!
🎉 New in npj Climate and Atmospheric Science: “Challenges in assessing Fire Weather changes in a warming climate.”
We quantify a ~65% rise in extreme fire‑weather days (1980–2023) and show common daily‑proxy methods can overestimate trends by up to 10%.
doi.org/10.1038/s416...
We quantify a ~65% rise in extreme fire‑weather days (1980–2023) and show common daily‑proxy methods can overestimate trends by up to 10%.
doi.org/10.1038/s416...
Challenges in assessing Fire Weather changes in a warming climate - npj Climate and Atmospheric Science
npj Climate and Atmospheric Science - Challenges in assessing Fire Weather changes in a warming climate
doi.org
July 29, 2025 at 5:09 PM
New publication, bringing much needed clarification on how to properly calculate the Canadian Fire Weather Index based on climate projections!
Reposted by Yann Quilcaille
🔥 Just published! 🔥
Our new manuscript on global #wildfires look beyond burned areas and ask:
What drives the #economic damages of wildfires — now & in the future?
We find that socioeconomic vulnerability, not just #climate, is key.
📄 iopscience.iop.org/article/10.1...
(Highlights below ⬇️)
Our new manuscript on global #wildfires look beyond burned areas and ask:
What drives the #economic damages of wildfires — now & in the future?
We find that socioeconomic vulnerability, not just #climate, is key.
📄 iopscience.iop.org/article/10.1...
(Highlights below ⬇️)
July 25, 2025 at 10:23 AM
🔥 Just published! 🔥
Our new manuscript on global #wildfires look beyond burned areas and ask:
What drives the #economic damages of wildfires — now & in the future?
We find that socioeconomic vulnerability, not just #climate, is key.
📄 iopscience.iop.org/article/10.1...
(Highlights below ⬇️)
Our new manuscript on global #wildfires look beyond burned areas and ask:
What drives the #economic damages of wildfires — now & in the future?
We find that socioeconomic vulnerability, not just #climate, is key.
📄 iopscience.iop.org/article/10.1...
(Highlights below ⬇️)
Reposted by Yann Quilcaille
Landmark climate ruling of International Court of Justice (IJC):
"[A] state’s failure to take appropriate action to protect the climate system [..] including through the production & consumption of fossil fuels [..] “may constitute an international wrongful act which is attributable to that state”"
"[A] state’s failure to take appropriate action to protect the climate system [..] including through the production & consumption of fossil fuels [..] “may constitute an international wrongful act which is attributable to that state”"
Healthy environment a human right, UN court says in landmark climate ruling
Healthy environment a human right, UN court says in landmark climate ruling
Court’s decision expected to be used in future litigation and to support political negotiations by vulnerable states
A “clean, healthy and sustainable environment” is a human right, according to judges at the top court of the United Nations.
The international court of justice (ICJ) delivered a landmark advisory opinion on Wednesday about countries’ obligations to tackle climate change, and the consequences they may face if they do not. Continue reading...
www.theguardian.com
July 23, 2025 at 8:10 PM
Landmark climate ruling of International Court of Justice (IJC):
"[A] state’s failure to take appropriate action to protect the climate system [..] including through the production & consumption of fossil fuels [..] “may constitute an international wrongful act which is attributable to that state”"
"[A] state’s failure to take appropriate action to protect the climate system [..] including through the production & consumption of fossil fuels [..] “may constitute an international wrongful act which is attributable to that state”"