Leipzig Institute for Meteorology
@meteoleipzig.bsky.social
All things blue sky from Leipzig University's experts on weather, climate & society 🌍 🏳️🌈🏳️⚧️🌪⛈🌤☀️
#ClimateAttribution #PolarClimateChange #Clouds&Climate #ClimComms
https://www.physes.uni-leipzig.de/institut-fuer-meteo
#ClimateAttribution #PolarClimateChange #Clouds&Climate #ClimComms
https://www.physes.uni-leipzig.de/institut-fuer-meteo
Pinned
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
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 Leipzig Institute for Meteorology
New study shows that the global mean net radiative forcing of #contrails in #cirrus #clouds is equal to 5mW m−2, suggesting that embedded contrails are a non-negligible part of the #climate impact of #aviation. www.nature.com/articles/s41...
Quantification of the radiative forcing of contrails embedded in cirrus clouds - Nature Communications
This study presents a quantification of the global mean net radiative forcing of contrails in cirrus clouds equal to 5 mW m−2, obtained from matching aircraft positions with spaceborne lidar data. Thi...
www.nature.com
November 28, 2025 at 1:49 PM
New study shows that the global mean net radiative forcing of #contrails in #cirrus #clouds is equal to 5mW m−2, suggesting that embedded contrails are a non-negligible part of the #climate impact of #aviation. www.nature.com/articles/s41...
Reposted by Leipzig Institute for Meteorology
World leaders must find the courage to end the fossil-fuel age www.nature.com/articles/d41...
World leaders must find the courage to end the fossil-fuel age
Despite the weak agreement seen at the COP30 climate conference, Brazil was right to prioritize discussing the eventual phase-out of fossil fuels. Others must now help to find a way forward.
www.nature.com
November 27, 2025 at 12:03 PM
World leaders must find the courage to end the fossil-fuel age www.nature.com/articles/d41...
Reposted by Leipzig Institute for Meteorology
The largest #ice #desert has the fewest ice #nuclei ( #INP) worldwide. New observations from #southern #hemisphere > www.tropos.de/en/current-i... / #Antarctica #clouds #climate @leibniz-gemeinschaft.de @awi.de @helmholtz.de @meteobe.bsky.social @icmcsic.bsky.social @dfg.de #AC3TR #AntarcticaInSync
November 27, 2025 at 10:45 AM
The largest #ice #desert has the fewest ice #nuclei ( #INP) worldwide. New observations from #southern #hemisphere > www.tropos.de/en/current-i... / #Antarctica #clouds #climate @leibniz-gemeinschaft.de @awi.de @helmholtz.de @meteobe.bsky.social @icmcsic.bsky.social @dfg.de #AC3TR #AntarcticaInSync
Reposted by Leipzig Institute for Meteorology
We are #hiring: #Scientist (m, f, div, n.a.) for the operation of an #ACTRISD #cloud #observatory > www.tropos.de/institut/ber... --- #Schmücke #Thüringen #chemistry #MS #ACD @hh24.bsky.social @leibniz-gemeinschaft.de @actris.bsky.social @dwdderwetterdienst.bsky.social @umweltbundesamt.bsky.social
November 21, 2025 at 1:17 PM
We are #hiring: #Scientist (m, f, div, n.a.) for the operation of an #ACTRISD #cloud #observatory > www.tropos.de/institut/ber... --- #Schmücke #Thüringen #chemistry #MS #ACD @hh24.bsky.social @leibniz-gemeinschaft.de @actris.bsky.social @dwdderwetterdienst.bsky.social @umweltbundesamt.bsky.social
Reposted by Leipzig Institute for Meteorology
Energy systems are at the heart of climate change, technology, and the future of how we live, but they’re far more complex than most people realise.
This is a great explainer video by @chrisjardineenergy.bsky.social that helps to make sense of the energy system.
www.youtube.com/watch?v=sCXG...
This is a great explainer video by @chrisjardineenergy.bsky.social that helps to make sense of the energy system.
www.youtube.com/watch?v=sCXG...
How Energy Systems REALLY work - here's 3 ways of understanding Energy Systems | Energy 101, Ep 4
YouTube video by chrisjardine.energy
www.youtube.com
November 27, 2025 at 11:05 AM
Energy systems are at the heart of climate change, technology, and the future of how we live, but they’re far more complex than most people realise.
This is a great explainer video by @chrisjardineenergy.bsky.social that helps to make sense of the energy system.
www.youtube.com/watch?v=sCXG...
This is a great explainer video by @chrisjardineenergy.bsky.social that helps to make sense of the energy system.
www.youtube.com/watch?v=sCXG...
Reposted by Leipzig Institute for Meteorology
A serac broke off high on the steep Ultar Glacier and the avalanche reached the Hunza Valley, covering Karimabad and surroundings with snow and dust! 🧊❄️😱
Ultar Sar (7,388 m) is the peak at the background right! 🏔️
🎥 karimiehunzai
Ultar Sar (7,388 m) is the peak at the background right! 🏔️
🎥 karimiehunzai
November 27, 2025 at 11:16 AM
A serac broke off high on the steep Ultar Glacier and the avalanche reached the Hunza Valley, covering Karimabad and surroundings with snow and dust! 🧊❄️😱
Ultar Sar (7,388 m) is the peak at the background right! 🏔️
🎥 karimiehunzai
Ultar Sar (7,388 m) is the peak at the background right! 🏔️
🎥 karimiehunzai
Reposted by Leipzig Institute for Meteorology
New study shows that global #mesoscale #eddy kinetic energy and sea surface #temperature gradients have shifted shoreward at ~35 km/decade since 1993, suggesting intensified #oceanic mesoscale activity near the continents. www.nature.com/articles/s41...
Shoreward shift of oceanic mesoscale activity over the last three decades - Nature Communications
This study shows that global mesoscale eddy kinetic energy and sea surface temperature gradient magnitudes have shifted shoreward at ~35 km/decade since 1993, suggesting intensified oceanic mesos...
www.nature.com
November 25, 2025 at 9:18 AM
New study shows that global #mesoscale #eddy kinetic energy and sea surface #temperature gradients have shifted shoreward at ~35 km/decade since 1993, suggesting intensified #oceanic mesoscale activity near the continents. www.nature.com/articles/s41...
Reposted by Leipzig Institute for Meteorology
Arctic sea #ice loss is reshaping the ocean’s #carbon pump. Satellite data show an early boost then stagnation, while models warn of future weakening under ice-free conditions, threatening carbon storage and #ecosystems.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Sea Ice Loss leads to regime shifts in the arctic biological pump - Nature Communications
Arctic sea ice loss is reshaping the ocean’s carbon pump. Satellite data show an early boost, then stagnation, while models warn of future weakening under ice-free conditions, threatening carbon stora...
www.nature.com
November 25, 2025 at 5:21 PM
Arctic sea #ice loss is reshaping the ocean’s #carbon pump. Satellite data show an early boost then stagnation, while models warn of future weakening under ice-free conditions, threatening carbon storage and #ecosystems.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Leipzig Institute for Meteorology
Although #SouthernOcean #MeridionalCirculation intensifies and shifts poleward under warming periods, the #EddyCompensation in the past and future is distinct due to enhanced #AntarcticBottomWater formation and subduction branch #Ventilation. @ucriverside.bsky.social
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Evolving Southern Ocean overturning in warming climates - Nature Communications
Although the Southern Ocean Meridional Circulation intensifies and shifts poleward under warming periods, the eddy compensation in the past and future is distinct due to enhanced Antarctic bottom wate...
www.nature.com
November 26, 2025 at 7:15 AM
Although #SouthernOcean #MeridionalCirculation intensifies and shifts poleward under warming periods, the #EddyCompensation in the past and future is distinct due to enhanced #AntarcticBottomWater formation and subduction branch #Ventilation. @ucriverside.bsky.social
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Leipzig Institute for Meteorology
This ⬇️ is a exceptional perspective on #resilience #regeneration and #sustainability
Well worth a read
Well worth a read
New Publication:
Resilience and regeneration for a world in crisis
Open access link: link.springer.com/article/10.1...
Resilience and regeneration for a world in crisis
Open access link: link.springer.com/article/10.1...
Resilience and regeneration for a world in crisis - Ambio
Both resilience and regeneration are relevant concepts in sustainability science. Resilience thinking has led to improved understanding of cross-scale cycles of growth and renewal, regime shifts, and ...
link.springer.com
November 26, 2025 at 9:20 AM
This ⬇️ is a exceptional perspective on #resilience #regeneration and #sustainability
Well worth a read
Well worth a read
Reposted by Leipzig Institute for Meteorology
TODAY @ 17:00 CET - support your LGBTQIA+ colleagues & learn about the tools needed to make a change
🎥 TOMORROW @ 17:00 CET!
Join us for this #webinar with Sara Tremi Proietti, Mike Prior-Jones, and Jaz Millar, who will share their experiences and expertise on effective communication and actions to support #LGBT+ #equality.
📆 Wednesday, 26 November 2025 17:00 CET
👉 Register here: egu.eu/9P08T5
Join us for this #webinar with Sara Tremi Proietti, Mike Prior-Jones, and Jaz Millar, who will share their experiences and expertise on effective communication and actions to support #LGBT+ #equality.
📆 Wednesday, 26 November 2025 17:00 CET
👉 Register here: egu.eu/9P08T5
November 26, 2025 at 9:23 AM
TODAY @ 17:00 CET - support your LGBTQIA+ colleagues & learn about the tools needed to make a change
Reposted by Leipzig Institute for Meteorology
The costs of Direct Air Capture will not fall as much as hoped. "Efforts to reduce carbon emissions should therefore* continue at pace, says the research team."
*Therefore is problematic here, as it implies that if DACCS was cheap less reductions are needed. No, no, no.
ethz.ch/en/news-and-...
1/
*Therefore is problematic here, as it implies that if DACCS was cheap less reductions are needed. No, no, no.
ethz.ch/en/news-and-...
1/
November 25, 2025 at 9:10 PM
The costs of Direct Air Capture will not fall as much as hoped. "Efforts to reduce carbon emissions should therefore* continue at pace, says the research team."
*Therefore is problematic here, as it implies that if DACCS was cheap less reductions are needed. No, no, no.
ethz.ch/en/news-and-...
1/
*Therefore is problematic here, as it implies that if DACCS was cheap less reductions are needed. No, no, no.
ethz.ch/en/news-and-...
1/
New paper alert: b.tellusjournals.se/articles/10....
Aerosols have an actual warming effect in the Arctic in winter: Changed dynamics via shift in the jet stream position (which in turn projects on the Arctic Oscillation index —> more positive)
@jquaas.bsky.social @khaustein.bsky.social
Aerosols have an actual warming effect in the Arctic in winter: Changed dynamics via shift in the jet stream position (which in turn projects on the Arctic Oscillation index —> more positive)
@jquaas.bsky.social @khaustein.bsky.social
Exploring the Sensitivity of Arctic Winter Climate to Aerosol Loading as Simulated in CMIP6 | Tellus B: Chemical and Physical Meteorology
b.tellusjournals.se
November 25, 2025 at 2:19 PM
New paper alert: b.tellusjournals.se/articles/10....
Aerosols have an actual warming effect in the Arctic in winter: Changed dynamics via shift in the jet stream position (which in turn projects on the Arctic Oscillation index —> more positive)
@jquaas.bsky.social @khaustein.bsky.social
Aerosols have an actual warming effect in the Arctic in winter: Changed dynamics via shift in the jet stream position (which in turn projects on the Arctic Oscillation index —> more positive)
@jquaas.bsky.social @khaustein.bsky.social
Reposted by Leipzig Institute for Meteorology
Global trade could lose $14B/yr from disruptions at maritime chokepoints like the Suez and Bab el-Mandeb. New ECI study shows how conflict, piracy & extreme weather ripple through supply chains. By Dr Jasper Verschuur, Dr Johannes Lumma & Prof Jim Hall.
➡️https://tinyurl.com/96amj8sz
➡️https://tinyurl.com/96amj8sz
November 25, 2025 at 9:47 AM
Global trade could lose $14B/yr from disruptions at maritime chokepoints like the Suez and Bab el-Mandeb. New ECI study shows how conflict, piracy & extreme weather ripple through supply chains. By Dr Jasper Verschuur, Dr Johannes Lumma & Prof Jim Hall.
➡️https://tinyurl.com/96amj8sz
➡️https://tinyurl.com/96amj8sz
Reposted by Leipzig Institute for Meteorology
"The cost of removing large quantities of CO2 from the air will fall in the medium term, but not as much as previously hoped.
This is the conclusion reached by @ethz.ch researchers on the basis of new calculations. Efforts to reduce carbon emissions should therefore continue at pace"
This is the conclusion reached by @ethz.ch researchers on the basis of new calculations. Efforts to reduce carbon emissions should therefore continue at pace"
Cost of direct air carbon capture to remain higher than hoped
The cost of removing large quantities of CO2 from the air will fall in the medium term, but not as much as previously hoped. This is the conclusion reached by ETH researchers on the basis of new calcu...
ethz.ch
November 25, 2025 at 6:37 AM
"The cost of removing large quantities of CO2 from the air will fall in the medium term, but not as much as previously hoped.
This is the conclusion reached by @ethz.ch researchers on the basis of new calculations. Efforts to reduce carbon emissions should therefore continue at pace"
This is the conclusion reached by @ethz.ch researchers on the basis of new calculations. Efforts to reduce carbon emissions should therefore continue at pace"
Reposted by Leipzig Institute for Meteorology
🌳How the Roman Empire Reshaped Europe's Woodlands🌳
More than 20,000 (!!!) tree-ring dated archaeological timbers tell the story of dramatic deforestation and forest recovery, for over a millennium (300 BCE–700 CE).
www.pnas.org/doi/10.1073/...
#dendrochronology #Roman #archaeology #ForestHistory
More than 20,000 (!!!) tree-ring dated archaeological timbers tell the story of dramatic deforestation and forest recovery, for over a millennium (300 BCE–700 CE).
www.pnas.org/doi/10.1073/...
#dendrochronology #Roman #archaeology #ForestHistory
Woodlands of Antiquity: A millennium of dendrochronological data on forest exploitation and timber economy between the Alps and the Atlantic | PNAS
The Roman Empire dominated large parts of western and central Europe for over half
a millennium, leaving a lasting cultural imprint on the continen...
www.pnas.org
November 25, 2025 at 7:31 AM
🌳How the Roman Empire Reshaped Europe's Woodlands🌳
More than 20,000 (!!!) tree-ring dated archaeological timbers tell the story of dramatic deforestation and forest recovery, for over a millennium (300 BCE–700 CE).
www.pnas.org/doi/10.1073/...
#dendrochronology #Roman #archaeology #ForestHistory
More than 20,000 (!!!) tree-ring dated archaeological timbers tell the story of dramatic deforestation and forest recovery, for over a millennium (300 BCE–700 CE).
www.pnas.org/doi/10.1073/...
#dendrochronology #Roman #archaeology #ForestHistory
Reposted by Leipzig Institute for Meteorology
Always fascinating when a volcano erupts for the first time in recorded history, as we have little clue as to how the eruption will develop
Watch this space 😊
www.theguardian.com/world/2025/n...
Watch this space 😊
www.theguardian.com/world/2025/n...
Ethiopian volcano erupts for first time in 12,000 years
Ash clouds from Hayli Gubbi volcano sent drifting across the Red Sea toward Yemen and Oman
www.theguardian.com
November 25, 2025 at 8:28 AM
Always fascinating when a volcano erupts for the first time in recorded history, as we have little clue as to how the eruption will develop
Watch this space 😊
www.theguardian.com/world/2025/n...
Watch this space 😊
www.theguardian.com/world/2025/n...
Reposted by Leipzig Institute for Meteorology
Extreme day-to-day temperature swings are becoming more frequent and intense due to Global warming, impacting human health, ecosystems, and resilience.
By 2100, these changes could increase by 17%, affecting 80% of the global population.
www.nature.com/articles/s41...
By 2100, these changes could increase by 17%, affecting 80% of the global population.
www.nature.com/articles/s41...
Global warming intensifies extreme day-to-day temperature changes in mid–low latitudes - Nature Climate Change
Climate change is expected to lead to higher day-to-day temperature variability in mid- to low latitudes. Here the authors show that extreme day-to-day temperature changes have distinct impacts on hum...
www.nature.com
November 24, 2025 at 5:44 AM
Extreme day-to-day temperature swings are becoming more frequent and intense due to Global warming, impacting human health, ecosystems, and resilience.
By 2100, these changes could increase by 17%, affecting 80% of the global population.
www.nature.com/articles/s41...
By 2100, these changes could increase by 17%, affecting 80% of the global population.
www.nature.com/articles/s41...
Reposted by Leipzig Institute for Meteorology
Now that we are likely to cross 1.5°C, there is increasing discussion on "overshoot".
There is a lot of uncertainties on overshoot, but there is one thing that we are 100% sure about:
GHG emissions need to go down >90% in decades for overshoot to be a reality.
www.swp-berlin.org/publikation/...
There is a lot of uncertainties on overshoot, but there is one thing that we are 100% sure about:
GHG emissions need to go down >90% in decades for overshoot to be a reality.
www.swp-berlin.org/publikation/...
November 24, 2025 at 8:13 AM
Now that we are likely to cross 1.5°C, there is increasing discussion on "overshoot".
There is a lot of uncertainties on overshoot, but there is one thing that we are 100% sure about:
GHG emissions need to go down >90% in decades for overshoot to be a reality.
www.swp-berlin.org/publikation/...
There is a lot of uncertainties on overshoot, but there is one thing that we are 100% sure about:
GHG emissions need to go down >90% in decades for overshoot to be a reality.
www.swp-berlin.org/publikation/...
Reposted by Leipzig Institute for Meteorology
The other certainty about overshoot is that even if we eventually get back to 1.5°C, a lot more people will suffer because we didn’t reduce emissions earlier and more rapidly.
Now that we are likely to cross 1.5°C, there is increasing discussion on "overshoot".
There is a lot of uncertainties on overshoot, but there is one thing that we are 100% sure about:
GHG emissions need to go down >90% in decades for overshoot to be a reality.
www.swp-berlin.org/publikation/...
There is a lot of uncertainties on overshoot, but there is one thing that we are 100% sure about:
GHG emissions need to go down >90% in decades for overshoot to be a reality.
www.swp-berlin.org/publikation/...
November 24, 2025 at 9:02 AM
The other certainty about overshoot is that even if we eventually get back to 1.5°C, a lot more people will suffer because we didn’t reduce emissions earlier and more rapidly.
Reposted by Leipzig Institute for Meteorology
Climate change is bad.
Our Almost-Apocalyptic Climate Future
By shooting for 3 degrees Celsius of warming, the world could slide toward a more cataclysmic 4 degrees.
www.theatlantic.com
November 24, 2025 at 9:39 AM
Climate change is bad.
Reposted by Leipzig Institute for Meteorology
Two years ago, we did a study on a devastating drought in the Fertil Crescent. Due to climate change and water governance disputes the drought is still ongoing. Teheran might be running out of water, if it doesn't start raining soon. Our update: www.worldweatherattribution.org/human-induce...
November 21, 2025 at 12:51 PM
Two years ago, we did a study on a devastating drought in the Fertil Crescent. Due to climate change and water governance disputes the drought is still ongoing. Teheran might be running out of water, if it doesn't start raining soon. Our update: www.worldweatherattribution.org/human-induce...
Reposted by Leipzig Institute for Meteorology
🌊 Ocean submesoscales as drivers of submarine melting within Antarctic ice cavities
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Ocean submesoscales as drivers of submarine melting within Antarctic ice cavities - Nature Geoscience
Submesoscale ocean features deliver heat beneath Thwaites Ice Shelf and contribute to submarine melting, according to numerical modelling combined with available observations.
www.nature.com
November 21, 2025 at 7:55 AM
🌊 Ocean submesoscales as drivers of submarine melting within Antarctic ice cavities
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Leipzig Institute for Meteorology
Reposted by Leipzig Institute for Meteorology
Where are global CO2 emissions heading?
Middle-of-the-road? But just because we have followed the SSP2-45, SSP4-60 path for 10 years, does not mean we follow it for the next 70 years.
Policy & technology have pushed the world away from the high-end, but 2.7C in 2100 & rising is not a good outcome!
Middle-of-the-road? But just because we have followed the SSP2-45, SSP4-60 path for 10 years, does not mean we follow it for the next 70 years.
Policy & technology have pushed the world away from the high-end, but 2.7C in 2100 & rising is not a good outcome!
November 21, 2025 at 9:07 AM
Where are global CO2 emissions heading?
Middle-of-the-road? But just because we have followed the SSP2-45, SSP4-60 path for 10 years, does not mean we follow it for the next 70 years.
Policy & technology have pushed the world away from the high-end, but 2.7C in 2100 & rising is not a good outcome!
Middle-of-the-road? But just because we have followed the SSP2-45, SSP4-60 path for 10 years, does not mean we follow it for the next 70 years.
Policy & technology have pushed the world away from the high-end, but 2.7C in 2100 & rising is not a good outcome!