Peter Pfleiderer
@klimapeter.bsky.social
Climate researcher at Leipzig University - Climate Causality & Attribution group (https://lim-climate-causality.github.io)
interested in atmospheric circulation and weather extremes | cloud lover
interested in atmospheric circulation and weather extremes | cloud lover
Pinned
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.
www.nature.com
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...
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 💪
I'm to announce our session on Synoptic and Large-Scale Circulation Dynamics at #EGU26
www.egu26.eu/session/56938
... and I'm looking forward to read your abstracts together with
@mittermeierm.bsky.social
Jan Stryhal, Christoph Beck, Ileana Bladé
www.egu26.eu/session/56938
... and I'm looking forward to read your abstracts together with
@mittermeierm.bsky.social
Jan Stryhal, Christoph Beck, Ileana Bladé
November 19, 2025 at 4:35 PM
I'm to announce our session on Synoptic and Large-Scale Circulation Dynamics at #EGU26
www.egu26.eu/session/56938
... and I'm looking forward to read your abstracts together with
@mittermeierm.bsky.social
Jan Stryhal, Christoph Beck, Ileana Bladé
www.egu26.eu/session/56938
... and I'm looking forward to read your abstracts together with
@mittermeierm.bsky.social
Jan Stryhal, Christoph Beck, Ileana Bladé
Reposted by Peter Pfleiderer
.. 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 Peter Pfleiderer
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 Peter Pfleiderer
“Heat pumps are superior in efficiency to condensing boilers, even if the heat pumps are powered by electricity from a power station burning natural gas.”
Not me saying that but the late Prof Sir David MacKay.
More in my @carbonbrief.org article 👇
interactive.carbonbrief.org/factcheck/he...
Not me saying that but the late Prof Sir David MacKay.
More in my @carbonbrief.org article 👇
interactive.carbonbrief.org/factcheck/he...
November 9, 2025 at 9:05 PM
“Heat pumps are superior in efficiency to condensing boilers, even if the heat pumps are powered by electricity from a power station burning natural gas.”
Not me saying that but the late Prof Sir David MacKay.
More in my @carbonbrief.org article 👇
interactive.carbonbrief.org/factcheck/he...
Not me saying that but the late Prof Sir David MacKay.
More in my @carbonbrief.org article 👇
interactive.carbonbrief.org/factcheck/he...
Reposted by Peter Pfleiderer
Want to get gridded temperature and precipitation responses to any future climate scenarios, including overshoot?
--> check out METEOR - a framework for emulating multi-timescale regional climate responses, with Marit Sandstad, Susanne Baur and @benmsanderson.bsky.social.
doi.org/10.5194/gmd-...
--> check out METEOR - a framework for emulating multi-timescale regional climate responses, with Marit Sandstad, Susanne Baur and @benmsanderson.bsky.social.
doi.org/10.5194/gmd-...
METEORv1.0.1: a novel framework for emulating multi-timescale regional climate responses
Abstract. Resolved spatial information for climate change projections is critical to any robust assessment of climate impacts and adaptation options. However, the range of spatially resolved future sc...
doi.org
November 6, 2025 at 1:28 PM
Want to get gridded temperature and precipitation responses to any future climate scenarios, including overshoot?
--> check out METEOR - a framework for emulating multi-timescale regional climate responses, with Marit Sandstad, Susanne Baur and @benmsanderson.bsky.social.
doi.org/10.5194/gmd-...
--> check out METEOR - a framework for emulating multi-timescale regional climate responses, with Marit Sandstad, Susanne Baur and @benmsanderson.bsky.social.
doi.org/10.5194/gmd-...
Reposted by Peter Pfleiderer
Hurricanes feed off of warm water. Watch how quickly the eye of #Melissa collapsed as it moved onto land and over the mountainous terrain of Jamaica, and how quickly it is reforming now that it has moved back over water! I will be adding this radar loop to my earth science lectures.
October 29, 2025 at 1:20 AM
Hurricanes feed off of warm water. Watch how quickly the eye of #Melissa collapsed as it moved onto land and over the mountainous terrain of Jamaica, and how quickly it is reforming now that it has moved back over water! I will be adding this radar loop to my earth science lectures.
Reposted by Peter Pfleiderer
To understand the climate connection to Hurricane Melissa, check out our real-time attribution page at @climatecentral.org: www.climatecentral.org/tropical-cyc...
"Climate change made the ocean temperatures along Melissa's path 500 to 900 times more likely."
"Climate change made the ocean temperatures along Melissa's path 500 to 900 times more likely."
October 28, 2025 at 3:25 PM
To understand the climate connection to Hurricane Melissa, check out our real-time attribution page at @climatecentral.org: www.climatecentral.org/tropical-cyc...
"Climate change made the ocean temperatures along Melissa's path 500 to 900 times more likely."
"Climate change made the ocean temperatures along Melissa's path 500 to 900 times more likely."
Reposted by Peter Pfleiderer
#Melissa is now the strongest #hurricane of the 2025 Atlantic season, and it continues to deepen. Pressure has fallen to 913mb. There’s evidence to suggest it is already even stronger than 160 mph winds. It’s possible that will be adjusted upward soon.
October 27, 2025 at 1:55 PM
#Melissa is now the strongest #hurricane of the 2025 Atlantic season, and it continues to deepen. Pressure has fallen to 913mb. There’s evidence to suggest it is already even stronger than 160 mph winds. It’s possible that will be adjusted upward soon.
Reposted by Peter Pfleiderer
Vorschieben, Frauen & Mädchen schützen zu wollen, als würde sexualisierte Gewalt vor allem von Migranten ausgehen, ist so hanebüchen wie perfide. Es ist rassistisch und misogyn zugleich - und eine klassische Erzählung von Rechtsextremen, die im Übrigen nicht auf "Schutz", sondern Besitzanspruch fußt
October 20, 2025 at 3:23 PM
Vorschieben, Frauen & Mädchen schützen zu wollen, als würde sexualisierte Gewalt vor allem von Migranten ausgehen, ist so hanebüchen wie perfide. Es ist rassistisch und misogyn zugleich - und eine klassische Erzählung von Rechtsextremen, die im Übrigen nicht auf "Schutz", sondern Besitzanspruch fußt
Reposted by Peter Pfleiderer
Reposted by Peter Pfleiderer
"After nearly 40 years, the Arctic Research Consortium of the United States, or ARCUS, will close September 30."
"The Arctic Research Consortium of the United States funded programs that aided Indigenous communities and tracked melting sea ice, among dozens of initiatives."
"The Arctic Research Consortium of the United States funded programs that aided Indigenous communities and tracked melting sea ice, among dozens of initiatives."
After Trump cut the National Science Foundation by 56 percent, a venerable Arctic research center closes its doors
The Arctic Research Consortium of the United States funded programs that aided Indigenous communities and tracked melting sea ice, among dozens of initiatives.
grist.org
September 28, 2025 at 2:10 PM
"After nearly 40 years, the Arctic Research Consortium of the United States, or ARCUS, will close September 30."
"The Arctic Research Consortium of the United States funded programs that aided Indigenous communities and tracked melting sea ice, among dozens of initiatives."
"The Arctic Research Consortium of the United States funded programs that aided Indigenous communities and tracked melting sea ice, among dozens of initiatives."
Reposted by Peter Pfleiderer
#Humberto is now a Cat 5!
It’s the first time in nearly a century with back to back seasons with Cat 5’s in the Atlantic.
We are seeing our warmer future unfold in real-time, IMO. 1/
It’s the first time in nearly a century with back to back seasons with Cat 5’s in the Atlantic.
We are seeing our warmer future unfold in real-time, IMO. 1/
September 27, 2025 at 8:52 PM
#Humberto is now a Cat 5!
It’s the first time in nearly a century with back to back seasons with Cat 5’s in the Atlantic.
We are seeing our warmer future unfold in real-time, IMO. 1/
It’s the first time in nearly a century with back to back seasons with Cat 5’s in the Atlantic.
We are seeing our warmer future unfold in real-time, IMO. 1/
Reposted by Peter Pfleiderer
For years climate change research has shown that seasons would struggle with stability issues, perhaps even with less storms, but when a storm breaks through, it is much more likely to rapidly intensify to a top tier hurricane due to heated water. 2/
September 27, 2025 at 8:52 PM
For years climate change research has shown that seasons would struggle with stability issues, perhaps even with less storms, but when a storm breaks through, it is much more likely to rapidly intensify to a top tier hurricane due to heated water. 2/
New study on the impact of aerosol forcing on heat wave attribution by Florian Kraulich ( @sebastian-sippel.bsky.social and me ) www.sciencedirect.com/science/arti...
The impact of aerosol forcing on the statistical attribution of heatwaves
Heatwaves are becoming more frequent and intense due to anthropogenic climate change. Accurately attributing changes in their occurrence probability a…
www.sciencedirect.com
September 26, 2025 at 7:46 AM
New study on the impact of aerosol forcing on heat wave attribution by Florian Kraulich ( @sebastian-sippel.bsky.social and me ) www.sciencedirect.com/science/arti...
Reposted by Peter Pfleiderer
More systematic rapid attribution taking the expertise of health experts onboard. Heat might be a silent killer, but it is here and most excess deaths are now attributable to human-induced climate change (70% on average).
The summer is over - and for about 16,600 people across 854 European cities that doesn't mean autumn comes, but death. People who would still be alive if it wasn't for our burning of fossil fuels. - New study with @lshtm.bsky.social www.imperial.ac.uk/grantham/pub...
September 17, 2025 at 11:09 AM
More systematic rapid attribution taking the expertise of health experts onboard. Heat might be a silent killer, but it is here and most excess deaths are now attributable to human-induced climate change (70% on average).
Reposted by Peter Pfleiderer
flat10-MIP has landed! gmd.copernicus.org/articles/18/...
flat10MIP: an emissions-driven experiment to diagnose the climate response to positive, zero and negative CO2 emissions
Abstract. The proportionality between global mean temperature and cumulative emissions of CO2 predicted in Earth system models (ESMs) is the foundation of carbon budgeting frameworks. Deviations from ...
gmd.copernicus.org
September 5, 2025 at 8:30 AM
flat10-MIP has landed! gmd.copernicus.org/articles/18/...
Reposted by Peter Pfleiderer
It's scary how fast the earth is warming.
For a long time, the 🌊 ocean surface was warming at a slower 🐌 rate but the warming rate appears to have caught up 🐇.
➡️ In our study about the jump in SSTs, we also estimated a 0.27°C per decade warming of global SSTs (www.nature.com/articles/s41...)
For a long time, the 🌊 ocean surface was warming at a slower 🐌 rate but the warming rate appears to have caught up 🐇.
➡️ In our study about the jump in SSTs, we also estimated a 0.27°C per decade warming of global SSTs (www.nature.com/articles/s41...)
June 19, 2025 at 9:04 AM
It's scary how fast the earth is warming.
For a long time, the 🌊 ocean surface was warming at a slower 🐌 rate but the warming rate appears to have caught up 🐇.
➡️ In our study about the jump in SSTs, we also estimated a 0.27°C per decade warming of global SSTs (www.nature.com/articles/s41...)
For a long time, the 🌊 ocean surface was warming at a slower 🐌 rate but the warming rate appears to have caught up 🐇.
➡️ In our study about the jump in SSTs, we also estimated a 0.27°C per decade warming of global SSTs (www.nature.com/articles/s41...)
Reposted by Peter Pfleiderer
🎉 Thrilled to announce Episode 1 of the Overshoot Conference Podcast is now live! This marks the start of our 9-episode series exploring the challenges of climate overshoot ahead of the Overshoot Conference Sep 30-Oct 02. overshootconference.org/the-overshoo... (or wherever you get your podcasts) 1/
The Overshoot Conference Podcast | Overshoot
overshootconference.org
September 3, 2025 at 8:15 AM
🎉 Thrilled to announce Episode 1 of the Overshoot Conference Podcast is now live! This marks the start of our 9-episode series exploring the challenges of climate overshoot ahead of the Overshoot Conference Sep 30-Oct 02. overshootconference.org/the-overshoo... (or wherever you get your podcasts) 1/
Reposted by Peter Pfleiderer
Germany is straying from its decarbonisation path.
Renewable energy expansion is not matching stated targets and planned gas capacity expansion risks locking in emissions.
Explore how Germany could get back on track to 1.5°C 👇
UPDATED TODAY:
1p5ndc-pathways.climateanalytics.org/countries/ge...
Renewable energy expansion is not matching stated targets and planned gas capacity expansion risks locking in emissions.
Explore how Germany could get back on track to 1.5°C 👇
UPDATED TODAY:
1p5ndc-pathways.climateanalytics.org/countries/ge...
August 14, 2025 at 8:38 AM
Germany is straying from its decarbonisation path.
Renewable energy expansion is not matching stated targets and planned gas capacity expansion risks locking in emissions.
Explore how Germany could get back on track to 1.5°C 👇
UPDATED TODAY:
1p5ndc-pathways.climateanalytics.org/countries/ge...
Renewable energy expansion is not matching stated targets and planned gas capacity expansion risks locking in emissions.
Explore how Germany could get back on track to 1.5°C 👇
UPDATED TODAY:
1p5ndc-pathways.climateanalytics.org/countries/ge...
Reposted by Peter Pfleiderer
Iraq blackout: "Electricity demand jumped, triggering a failure in transmission, as temperatures in parts of the country soared to as high as 50C (122F), with millions of people joining the Arbaeen pilgrimage."
🎁 link
www.bloomberg.com/news/article...
🎁 link
www.bloomberg.com/news/article...
Iraq Goes Dark After Searing Heat Wave Triggers Power Grid Failure
Iraq was plunged into darkness on Monday as searing heat pushed up power demand, triggering a failure in transmission lines that led to a near nationwide blackout.
www.bloomberg.com
August 12, 2025 at 12:45 PM
Iraq blackout: "Electricity demand jumped, triggering a failure in transmission, as temperatures in parts of the country soared to as high as 50C (122F), with millions of people joining the Arbaeen pilgrimage."
🎁 link
www.bloomberg.com/news/article...
🎁 link
www.bloomberg.com/news/article...
Reposted by Peter Pfleiderer
This is unbelievable.
The high temperature at one of Finland’s northernmost weather stations, in the municipality of Sodankylä (Lapland region) within the Arctic Circle at latitude 67.3°N, reached at least 25°C for 26 days in a row.
Records date back to 1908.
The high temperature at one of Finland’s northernmost weather stations, in the municipality of Sodankylä (Lapland region) within the Arctic Circle at latitude 67.3°N, reached at least 25°C for 26 days in a row.
Records date back to 1908.
August 6, 2025 at 4:45 PM
This is unbelievable.
The high temperature at one of Finland’s northernmost weather stations, in the municipality of Sodankylä (Lapland region) within the Arctic Circle at latitude 67.3°N, reached at least 25°C for 26 days in a row.
Records date back to 1908.
The high temperature at one of Finland’s northernmost weather stations, in the municipality of Sodankylä (Lapland region) within the Arctic Circle at latitude 67.3°N, reached at least 25°C for 26 days in a row.
Records date back to 1908.
Reposted by Peter Pfleiderer
🌍Across Europe, cities experienced a heatwave in late June-early July 2025.
Temperatures in London reached 34.7°C, while other parts of Europe saw record-breaking heat 🧵
Temperatures in London reached 34.7°C, while other parts of Europe saw record-breaking heat 🧵
August 4, 2025 at 9:44 AM
🌍Across Europe, cities experienced a heatwave in late June-early July 2025.
Temperatures in London reached 34.7°C, while other parts of Europe saw record-breaking heat 🧵
Temperatures in London reached 34.7°C, while other parts of Europe saw record-breaking heat 🧵
Reposted by Peter Pfleiderer
Small updates to the monthly climate monitoring dashboard.
The biggest update is that JRA-3Q and NOAAGlobalTemp are now updated to June 2025, which show similar things to the other datasets that were already updated.
1/n
www.jkclimate.fr/MonthlyDashb...
The biggest update is that JRA-3Q and NOAAGlobalTemp are now updated to June 2025, which show similar things to the other datasets that were already updated.
1/n
www.jkclimate.fr/MonthlyDashb...
July 30, 2025 at 12:56 PM
Small updates to the monthly climate monitoring dashboard.
The biggest update is that JRA-3Q and NOAAGlobalTemp are now updated to June 2025, which show similar things to the other datasets that were already updated.
1/n
www.jkclimate.fr/MonthlyDashb...
The biggest update is that JRA-3Q and NOAAGlobalTemp are now updated to June 2025, which show similar things to the other datasets that were already updated.
1/n
www.jkclimate.fr/MonthlyDashb...
Reposted by Peter Pfleiderer
New paper: Explaining and predicting the Southern Hemisphere eddy-driven jet @marleneclimate.bsky.social
www.uni-leipzig.de/en/newsdetai...
"The researchers found that 50 percent of the observed shift in the SH jet stream is directly attributable to global warming."
www.pnas.org/doi/10.1073/...
www.uni-leipzig.de/en/newsdetai...
"The researchers found that 50 percent of the observed shift in the SH jet stream is directly attributable to global warming."
www.pnas.org/doi/10.1073/...
New Insights into the Jet Stream Make Better Climate Predictions Possible
Jet streams are often referred to as the “motor” of global weather: High-altitude wind currents steer areas of high and low pressure, playing a crucial role in shaping our weather. However, how these ...
www.uni-leipzig.de
July 15, 2025 at 2:43 PM
New paper: Explaining and predicting the Southern Hemisphere eddy-driven jet @marleneclimate.bsky.social
www.uni-leipzig.de/en/newsdetai...
"The researchers found that 50 percent of the observed shift in the SH jet stream is directly attributable to global warming."
www.pnas.org/doi/10.1073/...
www.uni-leipzig.de/en/newsdetai...
"The researchers found that 50 percent of the observed shift in the SH jet stream is directly attributable to global warming."
www.pnas.org/doi/10.1073/...