In Linz wurde heute ein #Staubteufel beobachtet. Solche Kleintromben entstehen bei starker bodennaher Überhitzung der Luft: Thermikblasen lösen sich vom Boden und steigen auf. Wenn bereits eine geringe Rotation vorhanden ist, wird diese durch die Streckung des Wirbels verstärkt (Pirouetteneffekt).

Germany had 2.5 GW of operational grid-scale batteries in 2025, the largest fleet in the EU 🔋 Another 10 GW is in the pipeline. Had that capacity been online in 2025, Germany could have avoided €830 million in gas purchases and solar redispatch costs. ember-energy.org/lat...

A great EGU26! We're almost at the end! Here are pictures of posters presented by our MSc students focusing on ice clouds & convection: Marijan Trogrlić, Shirin Hamzeh Marand, Johannes Elias Hobiger Was great to see them present and getting increasingly confident! @univie.ac.at @egu-as.bsky.social

As always, peak of my science year and the perk of living in Vienna: a beautiful ~8 km bike ride over Donauinsel to @egu.eu conference venue!

The most inspiring week for science here in Vienna continued yesterday with a great colloquium talk on convective mass flux by @andrewilwilliams.bsky.social He even made use of our blackboard!

After a strong start at Lange Nacht der Forschung, the best 2 weeks of the year for science in Vienna continued today with our institute's internal pre-EGU poster showcase, also known as Posters & Pizza @ Exner

Our pre-EGU ice cloud workshop is rapidly approaching, with speakers on day1 and plenty of time for discussions on day2. Thinking about what we want to achieve now, and have a question Why do you think small-scale processes aren't considered as interesting as some larger-scale climate concepts?

The most fun part of LNF26 (both for the visitors, particularly kids; but also for me) was to demonstrate again and again cloud formation! Huge thanks to Sophie Schäringer to prepare it! So what's going on there? Hint: pressure changes, pV = nRT, Clausius-Clapeyron www.noaa.gov/office-educa...

Had a lot of fun last night with our Meteo & Climate team at the LNF26!

Clouds moderate Amazon deforestation’s climate effect | Science @science.org www.science.org/doi/10.1126/...

A Song of Clouds and Dust

I wish this came ~2 months earlier 50-70 cm of snow on ground in the hills SW of Vienna, above > 900 m, photo from yesterday, near Annaberg...see also their weather station at 900 m (www.lawinenwarndienst-niederoesterreich.at/lawis-und-st...)

Die Niederschlagsbilanz der letzten 3 Tage - Vergleich zwischen Modell und Messung. Fazit: Bescheiden. Im Großteil von Österreich ist deutlich weniger Regen und Schnee gefallen als berechnet. Und zwar nicht nur bei diesem Modell, sondern auch bei allen anderen. Selten, aber doch kommt sowas vor.

Yay, we seem to have inspired a new cool cloud physics event, our first inofficial spin-up Excited to be part of it, and thanks to the organizers for giving me space to talk about career and beyond it! @mathilderitman.bsky.social

I realized I haven't posted a cloud picture since a while. There you go with a view in direction Dachstein from Saturday, before the cold front, with already a pretty moist troposphere, despite mildly föhny conditions

Excellent statement from RMetS questioning the decision to cease funding for the FAAM aircraft: www.rmets.org/news/stateme...

Enjoying a rare good visibility moment riding down a substantially < 30° slope in Langtaufers, near (snow)bo(a)rders of IT/South Tyrol & AT/Tyrol & SUI/Graubünden

I'm super happy to see this one out! For those interested, please take a look at the well-prepared Jupyter notebook with the model Nick prepared (link in paper) and start playing with the model yourself!

Best avalanche app of all! (though also curious to see how the www.skitourenguru.com plans for an app materialize)

I've seen several Big Climate Accounts™ post about how the recent winter storm was made worse by climate change. It's a convenient narrative. s But what is "worse"? Colder temperatures? More snow? More freezing rain? Is there any primary literature supporting the idea of worse snowstorms? 1/

Who says January is boring? We had a festive end of the month at the Info Coffee at the img.univie.ac.at!

I realized it's been a while since I last posted a cloud photo. There it is, a panorama of this very dry but cold winter in the NE Alps, together with some cool lenticularis and stratiform clouds from the edge of action of a Mediterranean cyclone...

This would be a very good week for anyone who has not already abandoned the Mercator projection for maps of the world to do so

boah....better than my views of it in Kiruna in October!

A bit with a delay, but it was quite an aurora night in midlatitudes...even visible from Vienna a tiny bit (no good photos though)...here seen from a mountain in E Austria.

24 hours more time to submit your "Upgoer5" talk. Using only 1000 most common words in English! Last year was super fun! (note: it does not count towards the abstract limit, you can still have a normal one) www.linkedin.com/posts/marina... @egu.eu @egu-as.bsky.social

Is damaging hail getting worse? An ESSL-led study published in Nature Geoscience finds that very large hail is modelled to occur most frequently in South America, the United States, and South Africa, but Europe shows the strongest increase in very large hail frequency. doi.org/10.1038/s415...

Look at those values close to -30°C today morning!

Annual pilgrimage to the computer gods done. Better do it early in the year, and hope for their mercy for the rest of it :)

After the snow-bringing dark bora aka bora scura in Trieste/Trst, a colorful last sunset of the vacation

4-year postdoctoral fellowships for women @univie.ac.at The application consists of a short (3-page) research statement only. Feel free to get in touch if you’re interested or would like to discuss potential projects. careers.univie.ac.at/en/postdoc/e... Application deadline: 2 March 2026

Christmas magic is when you suddenly get a substantial chunk of your supercomputing cluster for the km-scale global climate simulations; Thank you @asc.ac.at ! @eurocc-austria.at

~ Update Neuschnee ~ Die Hotspots: Höhere Lagen der West- & Südsteiermark (teilweise über 30cm), Bucklige Welt und Umgebung, Teile des Waldviertels. Wien und Graz liegen an der Grenze, im Südosten der beiden Städte fällt wohl nur wenig Schnee, in höheren Lagen wird es schön weiß.

A little bit of föhn today

Did Hunga Tonga eruption cool or warm the climate? Is it still influencing it? Abig report on it is out! Including contributions from our Viennese colleague @kuchaale.bsky.social

Finally getting out of the fog for a while!

Erstmals seit 17 Tagen hat sich heute Vormittag in #Linz (OÖ) mal wieder "länger" die Sonne blicken lassen - für exakt 53 Minuten. Es ist dies die längste trübe Phase in der Linzer Messgeschichte (Beginn: Linz Stadt 1992, Linz Flughafen 1961).

Reporting nebel, not hochnebel tonight. Above 350 m altitude is a nice starry night. And below the enlighted Viennese nebel sea.

Good morning Kärnten/Koroška!

Ok, so it’s not all doom and gloom. I remember when the median projected warming was much higher than it is today! We’re moving in the right direction — just very, very slowly.

Auf den Bergen ist es derzeit extrem mild für Mitte November: - bis zu 19° in 1500m (im Bild) - bis zu 14° in 2000m - Null-Grad-Grenze gegen 3800m steigend Auf der Rax in 1547m wurden heute erstmals in einem November 18,9° gemessen (Messreihe seit 1995).

Wunderbare Polarlichter heute Nacht über Österreich, eingefangen von vielen Webcams. 🎥 Feratel

Aktuell Nordlichter über dem Wienerwald. #Aurora

Always nice to have a window seat: Freezing of a cloud: Wegener-Bergeron-Findeisen process in action in this punch hole cloud example Something the CloudLab team is recreating artificially cloudlab.ethz.ch

Multi-panel view of the last few days of Hurricane Melissa: ↖️ GOES-19 infrared brightness temp ↗️ GOES-19 visible satellite ↙️ Hurricane hunter planes & flight paths ↘️ Recon-derived flight level wind swath ⬇️ Estimated minimum pressure from recon dropsondes

at least from Dec on there's again a direct train from Wien to beyond Bratislava...no need to change any more there 🤦

Very bright circumzenithal arc from last weekend!

Great read from Mike Wallace (yes, that Wallace from Wallace & Hobbs) on how his view of global warming evolved. From early doubt to real concern.

‪I spent a great week visiting the CELLO-Arctic campaign, led by Tim Carlsen and Rob David from the University of Oslo, one of efforts to validate EarthCARE’s products. I learned a lot about flight planning & really enjoyed the positive vibes and excitement! More on their website: lnkd.in/dWvANupz