Frederik Kratzert
@kratzert.bsky.social
620 followers 680 following 270 posts
Research Scientist @ Google Research. Working on the intersection of machine learning and hydrology. Located in Vienna, Austria.
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kratzert.bsky.social
You can't imagine how many hours I spent on different forums, trying to get the root cause of this issue. I freshly installed Linux at least 3 times. In the end, a 15 minute conversation solved my problem. These are some of the applications where I really see the benefit of tools like Gemini.
kratzert.bsky.social
It seems to be a faulty sensor sending constant signals of overheating, which led to my CPUs being locked to 400 MHz. Installing and running github.com/erpalma/thro... solved the problem and I can finally use my private laptop again.
GitHub - erpalma/throttled: Workaround for Intel throttling issues in Linux.
Workaround for Intel throttling issues in Linux. Contribute to erpalma/throttled development by creating an account on GitHub.
github.com
kratzert.bsky.social
I described my problem and then asked for step by step instructions for which diagnostic tools to run. I either copied the terminal outputs into the chat or took screenshots (or photos from certain BIOS settings). It pretty quickly figured out that something is throttling by CPU cores.
kratzert.bsky.social
Oh my god, I finally was able to fix it. After effectively not using my private laptop for the past 9 months (I have a corp laptop and a private desktop PC that runs Linux), I sat down and ask Gemini for help. I know, I know...

Thread for details.
kratzert.bsky.social
I made the mistake of updating my private laptop from ubuntu 22.04 to 24.04. Now everything is incredibly slow, no idea why. Reinstalled 22.04, same issue. Opening the terminal takes a couple of seconds, opening keepass takes 10s in the UI appears incrementally. #linux
kratzert.bsky.social
This has easily been one of the most interesting external meetings in a while.
kratzert.bsky.social
Looking forward to a full day of exciting talks at the GRIT workshop in Oxford.
louiseslater.bsky.social
🌐 Introducing GRIT: the First Global Bifurcating River Network 🏞
developed by Michel Wortmann as part of the NERC Large Grant EvoFLOOD, in the Hydro-Climate Extremes group @oxfordgeography.bsky.social
Reposted by Frederik Kratzert
Reposted by Frederik Kratzert
sharky6000.bsky.social
Wow, ATProto (the tech that powers Bluesky) is pretty neat!

If, like me, you have not read about it but were curious, this is a great read explaining how it works:

overreacted.io/open-social/
Open Social — overreacted
The protocol is the API.
overreacted.io
kratzert.bsky.social
Looking forward to a full day of exciting talks at the GRIT workshop in Oxford.
louiseslater.bsky.social
🌐 Introducing GRIT: the First Global Bifurcating River Network 🏞
developed by Michel Wortmann as part of the NERC Large Grant EvoFLOOD, in the Hydro-Climate Extremes group @oxfordgeography.bsky.social
Map of the GRIT global river network. Source: Wortmann et al. (2025), Water Resources Research.
Reposted by Frederik Kratzert
keenancrane.bsky.social
I got tired of mashing together tools to write long threads with 𝐫𝐢𝐜𝐡 𝑓𝑜𝑟𝑚𝑎𝑡𝑡𝑖𝑛𝑔 and ℳα†ℏ—so I wrote La𝑇𝑤𝑒𝑒𝑡!

It converts Markdown and LaTeX to Unicode that can be used in “tweets”, and automatically splits long threads. Try it out!

keenancrane.github.io/LaTweet/
kratzert.bsky.social
A packed room full of young and motivated scientists, today at my presentation at the @ellis.eu #SummerSchool2025. It was a real pleasure being there.

Now I'm on my way back to Vienna but not without the by-now normal delay of 1h+ with the @bahn.de...
ellisunitjena.bsky.social
🎤 Keynotes on Day 3 at @ellis.eu #SummerSchool2025 in Jena
3️⃣ Marc Rußwurm — Learning Robust Environmental Embeddings by Training AI to Play Satellite GeoGuessr 🛰️🕹️
4️⃣ Frederik Kratzert — Deep Learning for Large-Scale Rainfall-Runoff Modeling & Flood Forecasting 🌧️🌊
🔗 www.ellis-jena.eu/summer-schoo...
kratzert.bsky.social
Never managed to attend a summer school during my master or PhD program. But it is never too late =)

Arrived in Jena to attend "ELLIS Summer School: AI for Earth and Climate Sciences" and to give a talk later this week.

Looking forward to many exciting conversations with young scientists
kratzert.bsky.social
@simonwillison.net have you seen that?
davidho.bsky.social
A pelican tried to eat my bike.
Reposted by Frederik Kratzert
o.simardcasanova.net
@leaflet.pub is such an innovative platform

If you select some text (1), a tooltip appears that allows you to share the selection as a quote on Bluesky (2)

If you click the Quotes icon (3), a panel showing all quotes appears (4)

It's a terrific integration between blogging and microblogging
kratzert.bsky.social
Oh, I didn't know. That is indeed pretty neat.
al.merose.com
I've been waiting a few years for this: Zarr v2 support was just launched in Google Earth Engine! Check out this demo that loads ARCO-ERA5 into GEE 🔥

code.earthengine.google.com/67ac1e48848d...
developers.google.com/earth-engine...
The Google Earth Engine code editor displaying an evaporation map loaded directly from ARCO-ERA5! The black and white map overlooks the continental US. It's easy to make out land masses, but there are also cloud-looking visuals on the map.
kratzert.bsky.social
Das kann doch kein zufall sein @geschichte.fm ?!
wikipedia.org
Imagine more than 30,000 people living in a space the size of a few city blocks without central planning, zoning, or formal governance 🏙 This was Kowloon Walled City, an urban enclave in Hong Kong known for its stacked, improvised architecture and intensely lived-in spaces. 🧵⬇️ (1/4)
A dense aerial view of Kowloon Walled City in Hong Kong, showing a massive block of interconnected, tightly packed apartment buildings surrounded by more modern high-rise structures and open parks. Text says: An unregulated enclave located in Hong Kong, this became one of the most densely populated urban spaces in modern history. Kowloon Walled City developed without official planning, but not without its own social structure.
kratzert.bsky.social
We are in the year 2025 and people write a paper showing that a model trained with ‼️global, coarse resolution forcings‼️ performs worse in ‼️ungauged‼️ basins, than a regional model trained with ‼️local, high resolution forcings‼️ in ‼️gauged‼️ basins.

This is used to say "training on more basins is bad"🤯
kratzert.bsky.social
You know this feeling, when you get to review a paper for the n-th amount of time (always resubmissions to different journals after rejections), with the authors not adapting any of the comments and keeping all the obvious non-sense?

Nobody ever should see my first draft of review comments.....
kratzert.bsky.social
My son came home late and doesn't even know we have the switch 2 already 🙄 guess that makes one evening of free training for me 😅
kratzert.bsky.social
I wish my universities would have offered such classes. Sounds amazing
rolfhut.bsky.social
"Always give students freedom to add a personal touch to an assignment"

This is a chip a first year student designed for my "Design Engineering for physics students" course @tudelfttnw.bsky.social. and if you look carefully you can find their personal nerdy touches on it :-). 🧵👇
kratzert.bsky.social
Bzgl Lebensmittelautomaten: Hier die wienerische / bowa Variante die einem 24/7 Zugang zu frischen Bohnenglück garantiert. ☕
Foto von einem Automaten an dem man Kaffeebohnen kaufen kann.
kratzert.bsky.social
sbmost.bsky.social
Oof. I feel this. I've always loved—and heavily used—the em-dash.

In addition to its versatility, it breaks up the density of a paragraph—letting in air that an abundance of commas, semi-colons, and parentheses just don't.
Some people think AI writing has a tell — the em dash. Writers disagree.
Em dashes have been derided as the “ChatGPT hyphen” — a punctuation mark overused by artificial intelligence. That’s not quite true.
www.washingtonpost.com