Kai Kornhuber
@kornhuber.bsky.social
Theme Lead Weather Extremes & Climate Dynamics at IIASA, adj. assoc. Research Scientist LDEO, Co-Chair Risk KAN
Pinned
Kai Kornhuber
@kornhuber.bsky.social
· Nov 26
'Global emergence of regional heatwave hotspots outpaces climate model simulations'
our new paper in @pnas.org with S. Bartusek, R. Seager. J. Schellnhuber and M. Ting investigating the tail behaviour of extreme heatwave trends.
@iiasa.ac.at @columbiaclimate.bsky.social @lamontearth.bsky.social
our new paper in @pnas.org with S. Bartusek, R. Seager. J. Schellnhuber and M. Ting investigating the tail behaviour of extreme heatwave trends.
@iiasa.ac.at @columbiaclimate.bsky.social @lamontearth.bsky.social
Reposted by Kai Kornhuber
The next @riskkan.bsky.social Compound Events webinar will be Tues 2 Dec at 11am UTC with a presentation from Xinyue Liu (NUS) on "Climate signals behind synchronized locust outbreak risks". For Zoom info: groups.google.com/u/1/g/riskka... or message @regclimo.bsky.social
November 24, 2025 at 8:09 PM
The next @riskkan.bsky.social Compound Events webinar will be Tues 2 Dec at 11am UTC with a presentation from Xinyue Liu (NUS) on "Climate signals behind synchronized locust outbreak risks". For Zoom info: groups.google.com/u/1/g/riskka... or message @regclimo.bsky.social
Excited about the upcoming @iiasa.ac.at AI for Climate Science Seminar with
Philosopher @eugeniaunivie.bsky.social (U Vienna) on Dec. 1st 3pm (CET).
Further information & registration: iiasa.ac.at/events/dec-2...
Upcoming seminars: iiasa.ac.at/projects/ai-...
@iiasa.ac.at @lamont.columbia.edu
Philosopher @eugeniaunivie.bsky.social (U Vienna) on Dec. 1st 3pm (CET).
Further information & registration: iiasa.ac.at/events/dec-2...
Upcoming seminars: iiasa.ac.at/projects/ai-...
@iiasa.ac.at @lamont.columbia.edu
November 26, 2025 at 4:56 PM
Excited about the upcoming @iiasa.ac.at AI for Climate Science Seminar with
Philosopher @eugeniaunivie.bsky.social (U Vienna) on Dec. 1st 3pm (CET).
Further information & registration: iiasa.ac.at/events/dec-2...
Upcoming seminars: iiasa.ac.at/projects/ai-...
@iiasa.ac.at @lamont.columbia.edu
Philosopher @eugeniaunivie.bsky.social (U Vienna) on Dec. 1st 3pm (CET).
Further information & registration: iiasa.ac.at/events/dec-2...
Upcoming seminars: iiasa.ac.at/projects/ai-...
@iiasa.ac.at @lamont.columbia.edu
Reposted by Kai Kornhuber
2025 was again a severe #hurricane season with 4 major hurricanes (3 cat 5 hurricanes).
In terms of accumulated cyclone energy (ACE) it was slightly above a normal season.
Seasonal forecasts (including ours 🥳) predicted the ACE well this year 💪
In terms of accumulated cyclone energy (ACE) it was slightly above a normal season.
Seasonal forecasts (including ours 🥳) predicted the ACE well this year 💪
November 20, 2025 at 9:49 PM
2025 was again a severe #hurricane season with 4 major hurricanes (3 cat 5 hurricanes).
In terms of accumulated cyclone energy (ACE) it was slightly above a normal season.
Seasonal forecasts (including ours 🥳) predicted the ACE well this year 💪
In terms of accumulated cyclone energy (ACE) it was slightly above a normal season.
Seasonal forecasts (including ours 🥳) predicted the ACE well this year 💪
A great pleasure to give a guest lecture on Weather and Climate Extremes at @columbiauniversity.bsky.social’s Mailman School of Public Health today.
Thanks for the invite @robbieparks.bsky.social!
@lamont.columbia.edu @iiasa.ac.at
Thanks for the invite @robbieparks.bsky.social!
@lamont.columbia.edu @iiasa.ac.at
November 18, 2025 at 5:08 PM
A great pleasure to give a guest lecture on Weather and Climate Extremes at @columbiauniversity.bsky.social’s Mailman School of Public Health today.
Thanks for the invite @robbieparks.bsky.social!
@lamont.columbia.edu @iiasa.ac.at
Thanks for the invite @robbieparks.bsky.social!
@lamont.columbia.edu @iiasa.ac.at
.. and as a fundamental innovation also enabling us to investigate compound hazards.
Great work @shrutinath97.bsky.social @carlschleussner.bsky.social
@klimapeter.bsky.social J. Carreau & P. Naveau
@iiasa.ac.at @lamont.columbia.edu
Great work @shrutinath97.bsky.social @carlschleussner.bsky.social
@klimapeter.bsky.social J. Carreau & P. Naveau
@iiasa.ac.at @lamont.columbia.edu
Climate emulators are a great tool to explore a wide range of possible climate futures. Here comes MERCURY - utilising the power of image-compression-based techniques for memory-efficient emulation. Fantastic work led by @shrutinath97.bsky.social agupubs.onlinelibrary.wiley.com/doi/10.1029/...
MERCURY: A Fast and Versatile Multi‐Resolution Based Global Emulator of Compound Climate Hazards
Climate model emulators traditionally generate global fields amounting to Peta-Bytes of data We introduce the emulator MERCURY, that employs a lifting scheme based on image compression techniques...
agupubs.onlinelibrary.wiley.com
November 10, 2025 at 1:42 PM
.. and as a fundamental innovation also enabling us to investigate compound hazards.
Great work @shrutinath97.bsky.social @carlschleussner.bsky.social
@klimapeter.bsky.social J. Carreau & P. Naveau
@iiasa.ac.at @lamont.columbia.edu
Great work @shrutinath97.bsky.social @carlschleussner.bsky.social
@klimapeter.bsky.social J. Carreau & P. Naveau
@iiasa.ac.at @lamont.columbia.edu
Reposted by Kai Kornhuber
Climate emulators are a great tool to explore a wide range of possible climate futures. Here comes MERCURY - utilising the power of image-compression-based techniques for memory-efficient emulation. Fantastic work led by @shrutinath97.bsky.social agupubs.onlinelibrary.wiley.com/doi/10.1029/...
MERCURY: A Fast and Versatile Multi‐Resolution Based Global Emulator of Compound Climate Hazards
Climate model emulators traditionally generate global fields amounting to Peta-Bytes of data We introduce the emulator MERCURY, that employs a lifting scheme based on image compression techniques...
agupubs.onlinelibrary.wiley.com
November 10, 2025 at 1:36 PM
Climate emulators are a great tool to explore a wide range of possible climate futures. Here comes MERCURY - utilising the power of image-compression-based techniques for memory-efficient emulation. Fantastic work led by @shrutinath97.bsky.social agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Kai Kornhuber
Looking for a #PhD in #ClimateExtremes?
We are advertising a project attributing causes of recent #droughts using counter-factual storylines.
Based in #Edinburgh, working with Andrew Schurer, me, @gabihegerl.bsky.social, & @edhawkins.org
tinyurl.com/5n7b52fr
We are advertising a project attributing causes of recent #droughts using counter-factual storylines.
Based in #Edinburgh, working with Andrew Schurer, me, @gabihegerl.bsky.social, & @edhawkins.org
tinyurl.com/5n7b52fr
November 6, 2025 at 1:38 PM
Looking for a #PhD in #ClimateExtremes?
We are advertising a project attributing causes of recent #droughts using counter-factual storylines.
Based in #Edinburgh, working with Andrew Schurer, me, @gabihegerl.bsky.social, & @edhawkins.org
tinyurl.com/5n7b52fr
We are advertising a project attributing causes of recent #droughts using counter-factual storylines.
Based in #Edinburgh, working with Andrew Schurer, me, @gabihegerl.bsky.social, & @edhawkins.org
tinyurl.com/5n7b52fr
Reposted by Kai Kornhuber
If you work in the intersection between physical climate risk and the insurance/financial sectors please consider submitting/attending our session at next year's #EGU26
Details below 👇
Session link: meetingorganizer.copernicus.org/EGU26/sessio...
Details below 👇
Session link: meetingorganizer.copernicus.org/EGU26/sessio...
November 6, 2025 at 11:03 AM
If you work in the intersection between physical climate risk and the insurance/financial sectors please consider submitting/attending our session at next year's #EGU26
Details below 👇
Session link: meetingorganizer.copernicus.org/EGU26/sessio...
Details below 👇
Session link: meetingorganizer.copernicus.org/EGU26/sessio...
Excited to announce our #EGU26 session on Climate Risk Assessment for Finance & Insurance Sectors with @mattpriestley.bsky.social A. Ciullo @hcbloomfield19.bsky.social @natalieslord.bsky.social
meetingorganizer.copernicus.org/EGU26/sessio...
@iiasa.ac.at @riskkan.bsky.social @lamont.columbia.edu
meetingorganizer.copernicus.org/EGU26/sessio...
@iiasa.ac.at @riskkan.bsky.social @lamont.columbia.edu
November 4, 2025 at 9:47 AM
Excited to announce our #EGU26 session on Climate Risk Assessment for Finance & Insurance Sectors with @mattpriestley.bsky.social A. Ciullo @hcbloomfield19.bsky.social @natalieslord.bsky.social
meetingorganizer.copernicus.org/EGU26/sessio...
@iiasa.ac.at @riskkan.bsky.social @lamont.columbia.edu
meetingorganizer.copernicus.org/EGU26/sessio...
@iiasa.ac.at @riskkan.bsky.social @lamont.columbia.edu
Reposted by Kai Kornhuber
🌍 Applications for #YSSP2026 are open!
Spend your summer at IIASA in Austria with researchers from around the world tackling global challenges.
🧠 For advanced PhD students
🗓️ 1 Jun–28 Aug 2026
⏰ Apply by 12 Jan 2026 (midnight CET)
Build your network. Advance your research: iiasa.ac.at/capacity-dev...
Spend your summer at IIASA in Austria with researchers from around the world tackling global challenges.
🧠 For advanced PhD students
🗓️ 1 Jun–28 Aug 2026
⏰ Apply by 12 Jan 2026 (midnight CET)
Build your network. Advance your research: iiasa.ac.at/capacity-dev...
October 20, 2025 at 2:09 PM
🌍 Applications for #YSSP2026 are open!
Spend your summer at IIASA in Austria with researchers from around the world tackling global challenges.
🧠 For advanced PhD students
🗓️ 1 Jun–28 Aug 2026
⏰ Apply by 12 Jan 2026 (midnight CET)
Build your network. Advance your research: iiasa.ac.at/capacity-dev...
Spend your summer at IIASA in Austria with researchers from around the world tackling global challenges.
🧠 For advanced PhD students
🗓️ 1 Jun–28 Aug 2026
⏰ Apply by 12 Jan 2026 (midnight CET)
Build your network. Advance your research: iiasa.ac.at/capacity-dev...
Reposted by Kai Kornhuber
@riskkan.bsky.social Working group leads @marleenderuiter.bsky.social @silviadeangeli.bsky.social @drrobertsakic.bsky.social @kornhuber.bsky.social
are involved in the COST core organising group as well as serving as country representatives.
are involved in the COST core organising group as well as serving as country representatives.
October 29, 2025 at 3:48 PM
@riskkan.bsky.social Working group leads @marleenderuiter.bsky.social @silviadeangeli.bsky.social @drrobertsakic.bsky.social @kornhuber.bsky.social
are involved in the COST core organising group as well as serving as country representatives.
are involved in the COST core organising group as well as serving as country representatives.
Reposted by Kai Kornhuber
Great @riskkan.bsky.social turn out at the kick-off meeting of the newly funded COST Action ANTICIPATE to advance long range predictions of Multihazards.
Many thanks to @drchriswhite.bsky.social, P. Rivoire and D. Domeisen for their leadership!
Exciting four years years ahead!
Many thanks to @drchriswhite.bsky.social, P. Rivoire and D. Domeisen for their leadership!
Exciting four years years ahead!
October 29, 2025 at 3:48 PM
Great @riskkan.bsky.social turn out at the kick-off meeting of the newly funded COST Action ANTICIPATE to advance long range predictions of Multihazards.
Many thanks to @drchriswhite.bsky.social, P. Rivoire and D. Domeisen for their leadership!
Exciting four years years ahead!
Many thanks to @drchriswhite.bsky.social, P. Rivoire and D. Domeisen for their leadership!
Exciting four years years ahead!
Reposted by Kai Kornhuber
👻🎃 It's that time of year again, time to start thinking about #EGU26!
🔥🌧️🌀 Our session on Future Changes in Weather and Climate Hazards is now open for abstract submissions 🔥🌧️🌀
meetingorganizer.copernicus.org/EGU26/sessio...
@tamarahappe.bsky.social @yinglintian.bsky.social @kornhuber.bsky.social
🔥🌧️🌀 Our session on Future Changes in Weather and Climate Hazards is now open for abstract submissions 🔥🌧️🌀
meetingorganizer.copernicus.org/EGU26/sessio...
@tamarahappe.bsky.social @yinglintian.bsky.social @kornhuber.bsky.social
October 24, 2025 at 11:10 AM
👻🎃 It's that time of year again, time to start thinking about #EGU26!
🔥🌧️🌀 Our session on Future Changes in Weather and Climate Hazards is now open for abstract submissions 🔥🌧️🌀
meetingorganizer.copernicus.org/EGU26/sessio...
@tamarahappe.bsky.social @yinglintian.bsky.social @kornhuber.bsky.social
🔥🌧️🌀 Our session on Future Changes in Weather and Climate Hazards is now open for abstract submissions 🔥🌧️🌀
meetingorganizer.copernicus.org/EGU26/sessio...
@tamarahappe.bsky.social @yinglintian.bsky.social @kornhuber.bsky.social
Reposted by Kai Kornhuber
New research shows that near-term mitigation could spare future generations around 0.6 meters of sea-level rise caused by emissions between 2020 and 2090, making today’s decisions critical not only for limiting warming but also for coastal impacts.
🔗 iiasa.ac.at/news/oct-202...
🔗 iiasa.ac.at/news/oct-202...
October 24, 2025 at 10:14 AM
New research shows that near-term mitigation could spare future generations around 0.6 meters of sea-level rise caused by emissions between 2020 and 2090, making today’s decisions critical not only for limiting warming but also for coastal impacts.
🔗 iiasa.ac.at/news/oct-202...
🔗 iiasa.ac.at/news/oct-202...
Happening today, don‘t miss!
Join us for the next @iiasa.ac.at AI for Climate Science Seminar with Dim Coumou (VU Amsterdam/Beyond Weather) on
AI for (sub)seasonal forecasting-boosting predictability and understanding teleconnections
Register: iiasa.ac.at/events/oct-2...
Past and Future seminars: iiasa.ac.at/projects/ai-...
AI for (sub)seasonal forecasting-boosting predictability and understanding teleconnections
Register: iiasa.ac.at/events/oct-2...
Past and Future seminars: iiasa.ac.at/projects/ai-...
October 14, 2025 at 11:14 AM
Happening today, don‘t miss!
Reposted by Kai Kornhuber
Join us for the next @iiasa.ac.at AI for Climate Science Seminar with Dim Coumou (VU Amsterdam/Beyond Weather) on
AI for (sub)seasonal forecasting-boosting predictability and understanding teleconnections
Register: iiasa.ac.at/events/oct-2...
Past and Future seminars: iiasa.ac.at/projects/ai-...
AI for (sub)seasonal forecasting-boosting predictability and understanding teleconnections
Register: iiasa.ac.at/events/oct-2...
Past and Future seminars: iiasa.ac.at/projects/ai-...
September 24, 2025 at 12:03 PM
Join us for the next @iiasa.ac.at AI for Climate Science Seminar with Dim Coumou (VU Amsterdam/Beyond Weather) on
AI for (sub)seasonal forecasting-boosting predictability and understanding teleconnections
Register: iiasa.ac.at/events/oct-2...
Past and Future seminars: iiasa.ac.at/projects/ai-...
AI for (sub)seasonal forecasting-boosting predictability and understanding teleconnections
Register: iiasa.ac.at/events/oct-2...
Past and Future seminars: iiasa.ac.at/projects/ai-...
Reposted by Kai Kornhuber
Read our editorial on #climate research in the Global South, and take a look at the collection of papers on #weather and climate extremes published in @natcomms.nature.com and @commsearth.nature.com www.nature.com/collections/...
"Those most impacted by climate change must be able to define and prioritize their own research agenda". Read our new editorial www.nature.com/articles/s41... and take a look at the collection of articles on #weather and #climate extremes: www.nature.com/collections/...
Climate research in the Global South - Nature Communications
The consequences of weather and climate extremes are felt disproportionately by some of the most disadvantaged populations of the world. Gaps in data and research perpetuate these deeply rooted inequalities and must be overcome.
www.nature.com
October 8, 2025 at 12:10 PM
Read our editorial on #climate research in the Global South, and take a look at the collection of papers on #weather and climate extremes published in @natcomms.nature.com and @commsearth.nature.com www.nature.com/collections/...
Reposted by Kai Kornhuber
Day 2 of the #OvershootConference started with a report back & reflection session followed by plenaries, panels, and parallel sessions exploring critical questions around the core conference themes.
Stay tuned for highlights, quotes, and snapshots!
ℹ️ overshootconference.org
@climateworks.org
Stay tuned for highlights, quotes, and snapshots!
ℹ️ overshootconference.org
@climateworks.org
October 1, 2025 at 2:43 PM
Day 2 of the #OvershootConference started with a report back & reflection session followed by plenaries, panels, and parallel sessions exploring critical questions around the core conference themes.
Stay tuned for highlights, quotes, and snapshots!
ℹ️ overshootconference.org
@climateworks.org
Stay tuned for highlights, quotes, and snapshots!
ℹ️ overshootconference.org
@climateworks.org
Reposted by Kai Kornhuber
🌡️🌾 When heat hits twice, crops pay the price.
New study coauthored by IIASA’s @kornhuber.bsky.social with @ethz.ch & @vuamsterdam.bsky.social shows back-to-back heatwaves cut yields of maize and wheat.
⚠️ Such events could be 10× more frequent without climate action.
▶️ iiasa.ac.at/news/oct-202...
New study coauthored by IIASA’s @kornhuber.bsky.social with @ethz.ch & @vuamsterdam.bsky.social shows back-to-back heatwaves cut yields of maize and wheat.
⚠️ Such events could be 10× more frequent without climate action.
▶️ iiasa.ac.at/news/oct-202...
October 1, 2025 at 2:31 PM
🌡️🌾 When heat hits twice, crops pay the price.
New study coauthored by IIASA’s @kornhuber.bsky.social with @ethz.ch & @vuamsterdam.bsky.social shows back-to-back heatwaves cut yields of maize and wheat.
⚠️ Such events could be 10× more frequent without climate action.
▶️ iiasa.ac.at/news/oct-202...
New study coauthored by IIASA’s @kornhuber.bsky.social with @ethz.ch & @vuamsterdam.bsky.social shows back-to-back heatwaves cut yields of maize and wheat.
⚠️ Such events could be 10× more frequent without climate action.
▶️ iiasa.ac.at/news/oct-202...
'Amplified agricultural impacts from more frequent and intense sequential heat events'
new paper out led by C. Steinmann & @raedhamed.bsky.social highlighting increased complex risks in a warming climate.
iopscience.iop.org/article/10.1...
@iiasa.ac.at @climate.columbia.edu @riskkan.bsky.social
new paper out led by C. Steinmann & @raedhamed.bsky.social highlighting increased complex risks in a warming climate.
iopscience.iop.org/article/10.1...
@iiasa.ac.at @climate.columbia.edu @riskkan.bsky.social
October 1, 2025 at 8:45 AM
'Amplified agricultural impacts from more frequent and intense sequential heat events'
new paper out led by C. Steinmann & @raedhamed.bsky.social highlighting increased complex risks in a warming climate.
iopscience.iop.org/article/10.1...
@iiasa.ac.at @climate.columbia.edu @riskkan.bsky.social
new paper out led by C. Steinmann & @raedhamed.bsky.social highlighting increased complex risks in a warming climate.
iopscience.iop.org/article/10.1...
@iiasa.ac.at @climate.columbia.edu @riskkan.bsky.social
Join us for the next @iiasa.ac.at AI for Climate Science Seminar with Dim Coumou (VU Amsterdam/Beyond Weather) on
AI for (sub)seasonal forecasting-boosting predictability and understanding teleconnections
Register: iiasa.ac.at/events/oct-2...
Past and Future seminars: iiasa.ac.at/projects/ai-...
AI for (sub)seasonal forecasting-boosting predictability and understanding teleconnections
Register: iiasa.ac.at/events/oct-2...
Past and Future seminars: iiasa.ac.at/projects/ai-...
September 24, 2025 at 12:03 PM
Join us for the next @iiasa.ac.at AI for Climate Science Seminar with Dim Coumou (VU Amsterdam/Beyond Weather) on
AI for (sub)seasonal forecasting-boosting predictability and understanding teleconnections
Register: iiasa.ac.at/events/oct-2...
Past and Future seminars: iiasa.ac.at/projects/ai-...
AI for (sub)seasonal forecasting-boosting predictability and understanding teleconnections
Register: iiasa.ac.at/events/oct-2...
Past and Future seminars: iiasa.ac.at/projects/ai-...
Reposted by Kai Kornhuber
🚨 NCA5 is now LIVE! 🚨
They took it down, but we've brought it back at: nca5.climate.us
Bookmark. 👏 this. 👏 page. 👏
This is just our first step in restoring trusted science information that Americans need to understand what's happening with the climate.
They took it down, but we've brought it back at: nca5.climate.us
Bookmark. 👏 this. 👏 page. 👏
This is just our first step in restoring trusted science information that Americans need to understand what's happening with the climate.
September 23, 2025 at 6:18 PM
🚨 NCA5 is now LIVE! 🚨
They took it down, but we've brought it back at: nca5.climate.us
Bookmark. 👏 this. 👏 page. 👏
This is just our first step in restoring trusted science information that Americans need to understand what's happening with the climate.
They took it down, but we've brought it back at: nca5.climate.us
Bookmark. 👏 this. 👏 page. 👏
This is just our first step in restoring trusted science information that Americans need to understand what's happening with the climate.
Reposted by Kai Kornhuber
⏰Deadline approaching ⏰
We are looking forward to your application by September 22nd!
We are looking forward to your application by September 22nd!
🚨 Open Call for new Steering Committee Members 🚨
Are you working on #risks from #extremeEvents under #environmentalChange?
Join us as Risk KAN Steering Committee member for the upcoming term: www.risk-kan.org/about-riskka...
www.risk-kan.org
@futureearth.bsky.social @wcrpclimate.bsky.social.
Are you working on #risks from #extremeEvents under #environmentalChange?
Join us as Risk KAN Steering Committee member for the upcoming term: www.risk-kan.org/about-riskka...
www.risk-kan.org
@futureearth.bsky.social @wcrpclimate.bsky.social.
September 19, 2025 at 8:49 AM
⏰Deadline approaching ⏰
We are looking forward to your application by September 22nd!
We are looking forward to your application by September 22nd!
Reposted by Kai Kornhuber
We're hiring! We have an open search for an Assistant Professor in physics of the ocean and/or atmosphere in Columbia's Dept. of Earth and Environmental Sciences. Please circulate this information to good candidates, and apply yourself if you are one! Ad & link to apply: apply.interfolio.com/173819
Apply - Interfolio
{{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
apply.interfolio.com
September 16, 2025 at 5:31 PM
We're hiring! We have an open search for an Assistant Professor in physics of the ocean and/or atmosphere in Columbia's Dept. of Earth and Environmental Sciences. Please circulate this information to good candidates, and apply yourself if you are one! Ad & link to apply: apply.interfolio.com/173819
Reposted by Kai Kornhuber
We’ve just launched the Risk‑KAN Starter Pack! A curated toolkit to kickstart collaboration, insight, and impact at the intersection of emergent risks, climate change & disaster resilience 🌍 And stay informed on all the events organized by our Working Group leads.
Take a look: go.bsky.app/SpGzhJJ
Take a look: go.bsky.app/SpGzhJJ
September 16, 2025 at 6:08 AM
We’ve just launched the Risk‑KAN Starter Pack! A curated toolkit to kickstart collaboration, insight, and impact at the intersection of emergent risks, climate change & disaster resilience 🌍 And stay informed on all the events organized by our Working Group leads.
Take a look: go.bsky.app/SpGzhJJ
Take a look: go.bsky.app/SpGzhJJ