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Jonathan Wille @jonathanwille.bsky.social · 15d

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

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Reposted by Jonathan Wille

AGU (American Geophysical Union) @agu.org · Aug 7

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): [email protected]

🗣️ Speak up. Science must be heard.

#ActOnClimate #AGU

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Reposted by Jonathan Wille

Polar Meteorology @metpolarintl.bsky.social · Aug 1

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

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Andrew Dessler @andrewdessler.com · Jul 31

🚨 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...

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

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David Ho @davidho.bsky.social · Jul 30

Motherfucking wind farms…

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Jonathan Wille @jonathanwille.bsky.social · Jul 30

This proposal to revoke the Endangerment Finding will prevent the government from regulating greenhouse gas emissions now and even in the future. There will be an opportunity to publicly comment on this proposal and remind the EPA that almost all climate scientists think this report is a joke.

Jonathan Wille @jonathanwille.bsky.social · Jul 30

I've given it a quick read and quickly realized that the sections concerning CO2 as plant food were full of confirmation bias and cherry picking. Further sections about climate change scenarios used strawman arguments. I fed the report into ChatGPT which agreed with my suspicions.

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Jonathan Wille @jonathanwille.bsky.social · Jul 30

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. 🧵

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Reposted by Jonathan Wille

StockMarketNews @investinq.bsky.social · Jul 27

🚨 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)

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

But much more research is needed before these experimental models can be operationalised for local climate services. Again I want to thank my co-authors for supporting this research.

Jonathan Wille @jonathanwille.bsky.social · Jul 15

So is there an added value for using these high resolution, yet limited run time models? It seems mostly a yes for extreme precipitation events, especially as the nextGEMS models compared well with a regional climate model. They can provide coverage to the globally underserved in climate prediction

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

Finally, looking at the global daily dry fraction on a common, coarse resolution, the differences between the models is diminished suggesting that resolution is the main driver of improvements. One big theme though is the difficulty of validating extreme precipitation with Obs and reanalysis.

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

One possible culprit is the missing connection between moisture convergence and extreme precipitation in ICON. The lack of convection parameterization means ICON generates more bubbly, isolated convective cells instead of organized precipitation along frontal boundaries

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

To better understand what factors drive precipitation patterns in the models, we looked at which month contains the most extreme rainfall. Normally autumn is the primary time for extreme weather in the Mediterranean, but ICON misses this meaning a less consistent extreme precipitation forcing

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

The benefits of higher resolution are seen again in the 95th quantile of daily precipitation where IFS and ICON show higher rainfall values in mountainous terrain.

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

Moving to the high-tail end of precipitation extremes, IFS produced very high, yet reasonable values of extreme rainfall. When controlling for resolution, this improvement over CESM2 persists for both IFS and ICON. This is important for having a climate model directly simulate flooding rains.

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

Precipitation intermittency represents how precipitation is distributed during the year. Is it light and frequent, or intense and rare? Here IFS and ICON show clear improvements over the CESM2 which has too diffuse precipitation leading to the common "drizzle bias"

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

We know that ICON has no convection parameterization which leads allows it to produce more convective showers and thunderstorms, thus breaking up the dry spells over land. But this also causes the afternoon storms to be far too intense.

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

Greater differences are found in the average maximum annual dry spell. Here IFS and ICON produce very long dry spells compared to observations and a coarser global climate model (CESM2). The important exception here is the ICON model over land.

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

Focusing on the Mediterranean region, we test the added value of having very high resolution for depicting extreme precipitation (drought and flood). Starting with the percentage of days/hours with no rain, we find that the greatest improvements are over land. This is from the higher resolution

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

This research focused on two experimental, fully-coupled, convection permitting Earth system models designed within the nextGEMS project. The IFS model has a hybrid convection parameterization scheme and ICON has no convection parameterization. These steps help push the models to higher resolution

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

One motivation for developing kilometer-scale ESMs is to better understand how precipitation extremes will change in regions of complex topography. We need to provide local planners with greater detail on how precipitation extremes will challenge their infrastructure as the planet continues to warm

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Jonathan Wille @jonathanwille.bsky.social · Jul 15

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

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Jonathan Wille @jonathanwille.bsky.social · Jul 7

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.

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Climatologist49 @climatologist49.bsky.social · Jul 3

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

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