Jonathan Wille
@jonathanwille.bsky.social
❄️ Polar meteorologist and climatologist.
Studying #polar #meteorology #climatology with focus on atmospheric rivers, mass balance impacts, and high-res climate modeling.
Post-doc researcher at ETH Zurich.
Studying #polar #meteorology #climatology with focus on atmospheric rivers, mass balance impacts, and high-res climate modeling.
Post-doc researcher at ETH Zurich.
Reposted by Jonathan Wille
@ucs.org has released a letter you can write to your Congressperson to save @ncar-ucar.bsky.social
Share your voice on the significant value of this bedrock climate and weather insitution. Your story matters!
secure.ucs.org/a/2025-prote...
Share your voice on the significant value of this bedrock climate and weather insitution. Your story matters!
secure.ucs.org/a/2025-prote...
Protect the National Center for Atmospheric Research
Write today and urge your members of Congress to oppose the Trump administration's plans to dismantle the National Center for Atmospheric Research (NCAR.) Your message to Congress will help protect NC...
secure.ucs.org
December 17, 2025 at 8:36 PM
@ucs.org has released a letter you can write to your Congressperson to save @ncar-ucar.bsky.social
Share your voice on the significant value of this bedrock climate and weather insitution. Your story matters!
secure.ucs.org/a/2025-prote...
Share your voice on the significant value of this bedrock climate and weather insitution. Your story matters!
secure.ucs.org/a/2025-prote...
If you are spending the holidays with family and would like to talk to some climate skeptics, then I would show them this chart. Few things hit harder than the disappearance of the white Christmas they experienced in their childhoods.
One week until Christmas Eve! 🎄
Here's how the frequency for white Christmases have changed over the last decades in Europe. 📉
Colors show how often there was snow on the ground at Christmas within each 30-year period, from 1951–1980 through 1995–2024.
Here's how the frequency for white Christmases have changed over the last decades in Europe. 📉
Colors show how often there was snow on the ground at Christmas within each 30-year period, from 1951–1980 through 1995–2024.
December 17, 2025 at 10:30 AM
If you are spending the holidays with family and would like to talk to some climate skeptics, then I would show them this chart. Few things hit harder than the disappearance of the white Christmas they experienced in their childhoods.
Reposted by Jonathan Wille
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
December 17, 2025 at 1:16 AM
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.
Reposted by Jonathan Wille
🌧️ New study: the deadly Indonesian floods were made worse by climate change.
Present-day conditions in similar events are now up to 10% wetter (+7 mm/day) and windier, boosting extreme rainfall.
#ClimateChange #Floods #Indonesia #Attribution #ClimaMeter
www.climameter.org/20251123-25-...
Present-day conditions in similar events are now up to 10% wetter (+7 mm/day) and windier, boosting extreme rainfall.
#ClimateChange #Floods #Indonesia #Attribution #ClimaMeter
www.climameter.org/20251123-25-...
December 4, 2025 at 3:46 PM
🌧️ New study: the deadly Indonesian floods were made worse by climate change.
Present-day conditions in similar events are now up to 10% wetter (+7 mm/day) and windier, boosting extreme rainfall.
#ClimateChange #Floods #Indonesia #Attribution #ClimaMeter
www.climameter.org/20251123-25-...
Present-day conditions in similar events are now up to 10% wetter (+7 mm/day) and windier, boosting extreme rainfall.
#ClimateChange #Floods #Indonesia #Attribution #ClimaMeter
www.climameter.org/20251123-25-...
Reposted by Jonathan Wille
Reflections on COP30 Global Mutirão final decision text:
November 22, 2025 at 3:36 PM
Reflections on COP30 Global Mutirão final decision text:
Reposted by Jonathan Wille
The stakes: Trump’s anti-climate agenda could result in 1.3m more deaths globally, analysis finds
- Fallout from increased emissions linked to president’s ‘America First’ policies expected to most affect those in poor, hot countries
#COP30 #climatecrisis
www.theguardian.com/environment/...
- Fallout from increased emissions linked to president’s ‘America First’ policies expected to most affect those in poor, hot countries
#COP30 #climatecrisis
www.theguardian.com/environment/...
Trump’s anti-climate agenda could result in 1.3m more deaths globally, analysis finds
Fallout from increased emissions linked to president’s ‘America First’ policies expected to most affect those in poor, hot countries
www.theguardian.com
November 19, 2025 at 4:41 PM
The stakes: Trump’s anti-climate agenda could result in 1.3m more deaths globally, analysis finds
- Fallout from increased emissions linked to president’s ‘America First’ policies expected to most affect those in poor, hot countries
#COP30 #climatecrisis
www.theguardian.com/environment/...
- Fallout from increased emissions linked to president’s ‘America First’ policies expected to most affect those in poor, hot countries
#COP30 #climatecrisis
www.theguardian.com/environment/...
If you have some free time today, I'm helping to host a discussion, "Antarctic Tipping Points Outlook" happening at COP30. It's hosted by the International Cryosphere Climate Initiative and you can find the talk live at www.youtube.com/@iccinet/str.... The talk starts at 14:00 CET.
International Cryosphere Climate Initiative
International Cryosphere Climate Initiative (ICCI) is a network of senior policy experts and researchers aiming to spread cryosphere science and preserve the cryosphere's key role in Earth's climate s...
www.youtube.com
November 19, 2025 at 12:41 PM
If you have some free time today, I'm helping to host a discussion, "Antarctic Tipping Points Outlook" happening at COP30. It's hosted by the International Cryosphere Climate Initiative and you can find the talk live at www.youtube.com/@iccinet/str.... The talk starts at 14:00 CET.
Reposted by Jonathan Wille
a century of glaciers melting 🧪🌐
November 3, 2025 at 5:21 PM
a century of glaciers melting 🧪🌐
Reposted by Jonathan Wille
So, I hate to be this guy, but as the director of Yale’s new program on attribution science (!?), uh, most of the commentary on Bluesky about Hurricane Melissa and climate change has been… not quite right
October 31, 2025 at 2:19 AM
So, I hate to be this guy, but as the director of Yale’s new program on attribution science (!?), uh, most of the commentary on Bluesky about Hurricane Melissa and climate change has been… not quite right
Latest update from the National Hurricane Center for hurricane Melissa right before it makes landfall in western Jamaica. Winds are 185 mph with a 892 mb pressure making it the third strongest Atlantic hurricane ever by pressure. The destruction that is about to happen is just unimaginable.
October 28, 2025 at 2:11 PM
Latest update from the National Hurricane Center for hurricane Melissa right before it makes landfall in western Jamaica. Winds are 185 mph with a 892 mb pressure making it the third strongest Atlantic hurricane ever by pressure. The destruction that is about to happen is just unimaginable.
Reposted by Jonathan Wille
#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.
Trump says climate change predictions were made by "stupid people". I guess I'm a stupid person who now has a chip on my shoulder to make good climate science and show the real stupid people are the ones in the government who are actively trying to burn the world. www.youtube.com/shorts/hhax2...
Climate change was made up by ‘stupid people’: Trump
YouTube video by CTV News
www.youtube.com
September 24, 2025 at 8:39 AM
Trump says climate change predictions were made by "stupid people". I guess I'm a stupid person who now has a chip on my shoulder to make good climate science and show the real stupid people are the ones in the government who are actively trying to burn the world. www.youtube.com/shorts/hhax2...
Reposted by Jonathan Wille
The EPA is attempting to repeal its endangerment finding for GHGs—threatening decades of climate progress.
📢 Register by 12 Aug to testify at the virtual hearings (19–20 Aug): EPA-mobilesource-hearings@epa.gov
🗣️ Speak up. Science must be heard.
#ActOnClimate #AGU
📢 Register by 12 Aug to testify at the virtual hearings (19–20 Aug): EPA-mobilesource-hearings@epa.gov
🗣️ Speak up. Science must be heard.
#ActOnClimate #AGU
August 7, 2025 at 10:45 AM
The EPA is attempting to repeal its endangerment finding for GHGs—threatening decades of climate progress.
📢 Register by 12 Aug to testify at the virtual hearings (19–20 Aug): EPA-mobilesource-hearings@epa.gov
🗣️ Speak up. Science must be heard.
#ActOnClimate #AGU
📢 Register by 12 Aug to testify at the virtual hearings (19–20 Aug): EPA-mobilesource-hearings@epa.gov
🗣️ Speak up. Science must be heard.
#ActOnClimate #AGU
Reposted by Jonathan Wille
In case you need a podcast listen for the weekend, we recommend Beyond the Ice from the British Antarctic Survey. Check out the latest episode where Dr. Michelle Maclennan discusses the state of extreme weather over Antarctica and recent ice mass increases open.spotify.com/episode/30Tu...
10: How do we actually *know* Antarctica is melting? | Dr Michelle Maclennan
Beyond the Ice · Episode
open.spotify.com
August 1, 2025 at 12:46 PM
In case you need a podcast listen for the weekend, we recommend Beyond the Ice from the British Antarctic Survey. Check out the latest episode where Dr. Michelle Maclennan discusses the state of extreme weather over Antarctica and recent ice mass increases open.spotify.com/episode/30Tu...
Reposted by Jonathan Wille
🚨 If you're interested in working on a coordinated response to the DOE climate report, please enter your info on this google form 🚨
Please RT this so as many people see it as possible.
forms.gle/BL9xUAfRxA...
Please RT this so as many people see it as possible.
forms.gle/BL9xUAfRxA...
DOE climate report response form
We are collecting names to assemble a writing team to respond to the DOE climate working group report. If you'd like to contribute, enter your info below. At this point, there is no guarantee what we'll do (if anything), but we want to keep our options open by collecting names. If you have any further questions, feel free to email me.
We are primarily looking for Ph.D. scientists at universities or government labs in appropriate fields. I realize that this will exclude some qualified people and I apologize, but we felt this was necessary for a variety of reasons.
forms.gle
July 31, 2025 at 6:35 PM
🚨 If you're interested in working on a coordinated response to the DOE climate report, please enter your info on this google form 🚨
Please RT this so as many people see it as possible.
forms.gle/BL9xUAfRxA...
Please RT this so as many people see it as possible.
forms.gle/BL9xUAfRxA...
Reposted by Jonathan Wille
Motherfucking wind farms…
July 30, 2025 at 5:02 PM
Motherfucking wind farms…
A report from the Climate Working Group commissioned by the DOE is the scientific basis for the EPA's proposal to revoke the 2009 Endangerment Finding. This report, written by well-known climate skeptic scientists, is absolutely insulting to read from a science writing perspective. 🧵
July 30, 2025 at 12:23 PM
A report from the Climate Working Group commissioned by the DOE is the scientific basis for the EPA's proposal to revoke the 2009 Endangerment Finding. This report, written by well-known climate skeptic scientists, is absolutely insulting to read from a science writing perspective. 🧵
Reposted by Jonathan Wille
🚨 The U.S. oil rig count just suffered its fastest collapse since the pandemic.
From January to July 2025, rigs dropped 13.7%, the steepest 15-week plunge in five years.
This isn’t just about oil, it’s about inflation, jobs, energy security, and the global economy.
(Save this thread)
From January to July 2025, rigs dropped 13.7%, the steepest 15-week plunge in five years.
This isn’t just about oil, it’s about inflation, jobs, energy security, and the global economy.
(Save this thread)
July 27, 2025 at 10:13 PM
🚨 The U.S. oil rig count just suffered its fastest collapse since the pandemic.
From January to July 2025, rigs dropped 13.7%, the steepest 15-week plunge in five years.
This isn’t just about oil, it’s about inflation, jobs, energy security, and the global economy.
(Save this thread)
From January to July 2025, rigs dropped 13.7%, the steepest 15-week plunge in five years.
This isn’t just about oil, it’s about inflation, jobs, energy security, and the global economy.
(Save this thread)
New paper alert 🚨 Our work on the representation of extreme precipitation events within kilometer-scale Earth system models is published. On a personal note, it's the first paper I've written that doesn't focus on Antarctica! More details below 🧵 agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Extreme Precipitation Depiction in Convection‐Permitting Earth System Models Within the nextGEMS Project
Fully coupled convection-permitting Earth System Models improve the depiction of wet/dry precipitation extremes over the Mediterranean region
The explicit resolution of convection helps simulate ...
agupubs.onlinelibrary.wiley.com
July 15, 2025 at 9:50 AM
New paper alert 🚨 Our work on the representation of extreme precipitation events within kilometer-scale Earth system models is published. On a personal note, it's the first paper I've written that doesn't focus on Antarctica! More details below 🧵 agupubs.onlinelibrary.wiley.com/doi/10.1029/...
After a brutal start to the Alps melt season from an early season heatwave, we'll get a small reprieve with a series of cyclones drawing down cold, moist air from the north. In the highest elevations, there could be widespread accumulation of around 50 cm by Wednesday.
July 7, 2025 at 8:15 AM
After a brutal start to the Alps melt season from an early season heatwave, we'll get a small reprieve with a series of cyclones drawing down cold, moist air from the north. In the highest elevations, there could be widespread accumulation of around 50 cm by Wednesday.
Reposted by Jonathan Wille
A large part of the western North Slope of Alaska with official forecast high temps over 90F today and tomorrow. This is borderline unprecedented if it happens. There are no weather stations in those 90F+ forecast areas though. So verification will basically be impossible. @alaskawx.bsky.social
July 3, 2025 at 6:31 PM
A large part of the western North Slope of Alaska with official forecast high temps over 90F today and tomorrow. This is borderline unprecedented if it happens. There are no weather stations in those 90F+ forecast areas though. So verification will basically be impossible. @alaskawx.bsky.social
Reposted by Jonathan Wille
Intense melt at high elevation and lack of freezing make juxtaglacial lakes to form as already shown at Mer de Glace near Punta Helbronner!
Here is an other example at 3430 m on Saas Fee Glacier! ❄️🧊🌊
(already existing in 2023, not shown on Swisstopo)
www.linkedin.com/posts/thomas...
Here is an other example at 3430 m on Saas Fee Glacier! ❄️🧊🌊
(already existing in 2023, not shown on Swisstopo)
www.linkedin.com/posts/thomas...
June 29, 2025 at 12:10 PM
Intense melt at high elevation and lack of freezing make juxtaglacial lakes to form as already shown at Mer de Glace near Punta Helbronner!
Here is an other example at 3430 m on Saas Fee Glacier! ❄️🧊🌊
(already existing in 2023, not shown on Swisstopo)
www.linkedin.com/posts/thomas...
Here is an other example at 3430 m on Saas Fee Glacier! ❄️🧊🌊
(already existing in 2023, not shown on Swisstopo)
www.linkedin.com/posts/thomas...
Reposted by Jonathan Wille
New paper in ERL! We study the importance of resolution for the representation of climate extremes.
We use a new generation of km-scale models to show that many important details about temperature and precipitation extremes are hidden at CMIP6-like resolutions.
doi.org/10.1088/1748...
We use a new generation of km-scale models to show that many important details about temperature and precipitation extremes are hidden at CMIP6-like resolutions.
doi.org/10.1088/1748...
June 17, 2025 at 10:56 AM
New paper in ERL! We study the importance of resolution for the representation of climate extremes.
We use a new generation of km-scale models to show that many important details about temperature and precipitation extremes are hidden at CMIP6-like resolutions.
doi.org/10.1088/1748...
We use a new generation of km-scale models to show that many important details about temperature and precipitation extremes are hidden at CMIP6-like resolutions.
doi.org/10.1088/1748...
Reposted by Jonathan Wille
Our #CopernicusAtmosphere aerosol optical depth forecast initialised on 11 June showed a complex mixture of aerosols over Europe in recent days with smoke transport from Canadian wildfires interspersed with a plume of Saharan dust.
See the latest charts at atmosphere.copernicus.eu/charts/packa...
See the latest charts at atmosphere.copernicus.eu/charts/packa...
June 13, 2025 at 2:23 PM
Our #CopernicusAtmosphere aerosol optical depth forecast initialised on 11 June showed a complex mixture of aerosols over Europe in recent days with smoke transport from Canadian wildfires interspersed with a plume of Saharan dust.
See the latest charts at atmosphere.copernicus.eu/charts/packa...
See the latest charts at atmosphere.copernicus.eu/charts/packa...
Reposted by Jonathan Wille
To the scientists who shared their work and kept pressure building against the Trump Admin for 100 straight hours: thank you for your relentlessness.
We owe you a future of climate safety.
We owe you a future of climate safety.
Alarmed by Trump Cuts, Scientists Are Talking Science. For 100 Hours.
www.nytimes.com
June 4, 2025 at 12:44 PM
To the scientists who shared their work and kept pressure building against the Trump Admin for 100 straight hours: thank you for your relentlessness.
We owe you a future of climate safety.
We owe you a future of climate safety.