Comparing global km-scale climate models to the resolution of coarser CMIP6 models. The video shows precipitation flux and accumulated precipitation for 2025, ending with a quantification of the difference in resolutions. Animation: Michael Böttinger (DKRZ) Method & paper: bsky.app/profile/luka...

Here's also my thread on the main findings: /profile/lukasbrunner.bsky.social/post/3lrsdhwkev22y

Amazing visualization of our recent sub-grid variability work by Michael Böttinger (DKRZ) 🤩. It shows the local detail in global precipitation resolved by km-scale models. From 0:50 in direct comparison to CMIP6-type 100km. From 2:07 the sub-grid variability is shown. 🤓🧪 youtu.be/fzA92tSF4ZM?...

Local downpour near Oberstdorf, Germany ⛰️

Vor einigen Wochen durfte ich im Rahmen des Formats Vorlesung für Alle der @uni-hamburg.de einen Vortrag zu Temperaturextremen geben. Die Aufzeichnung ist jetzt auf YouTube 👇 Danke für die Einladung und das Interesse! youtu.be/0KGi4Y6J2Ls?...

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...

Today is #ShowYourStripes Day! Created by @edhawkins.org, the warming stripes show temperature each year: blue for cool, white for avg, red for hot. Athletes are wearing them, knitters are knitting them, and cities are putting them on trams. Find + share your "stripes" here: showyourstripes.info

Annually the impact of climate change is pretty clear even locally. And even on a daily basis the signal starts to emerge! For regular updates on daily Hamburg temperatures in a long term context, check out my bot @weather-climate.bsky.social (still 🚧) 2025 so far: bsky.app/profile/weat...

Temperature anomaly relative to 1951-2010 in Hamburg, Germany #ShowYourStripes day #SystemChangeNotClimateChange

The first 3 eps of TOTALLY COOKED have landed! Check it out for weather & climate in a factual, relatable & often humorous way. Available below, & where you get your podcasts. Like, follow & share. Let's tackle the climate crisis together. #totallycooked www.21centuryweather.org.au/engage/total...

@cenunihh.bsky.social climate visualization lab has created this nice animation of the resolution effect on climate extremes! 🤩 Comparison of CMIP6-like 100km and the new 10km for the example of TXx (hottest day in the year). Details in the paper: doi.org/10.1088/1748... youtu.be/R5laSSVHUAk?...

Resolution matters: Extreme temperatures in e.g. Indian cities can be underestimated by up to 10°C, a paper by @lukasbrunner.bsky.social‬ shows. High-res climate models (<10 km) reveal that important details about extremes are hidden at lower resolutions. iopscience.iop.org/article/10.1...

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...

#EGU25 is about to start! If you're there, check out our session on High-impact Climate Extremes on Tuesday, room 🟨 F1 🧪: meetingorganizer.copernicus.org/EGU25/sessio... With many exciting talks, including the CL Division Outstanding ECS Award Lecture by @kornhuber.bsky.social

Great workshop on atmospheric temperature changes by @wcrpclimate.bsky.social in Graz! Thanks for including me in this interesting and insightful exchange!

Let me very warmly recommend putting our Up-Goer Five session into your EGU25 calendar! I mean, just have a look at these amazing abstract titles (using only the 1000 most used English words). I can guarantee that this will be an extremely informative and fun session! 🤓🧑‍🎓 #EGU25 @egu.eu

Join us on Friday during #EGU25 for an interesting session on New developments in Earth system modelling! We will cover various topics from advances in modelling to model evaluation. We are also honored to have Shuting Yang as a solicited speaker! 👇 meetingorganizer.copernicus.org/EGU25/sessio...

This is genius! so creative and also important for how we communicate our science

Super excited to be presenting our ensemble boosting work, 'Imagine rain falling in a different place', in this session:

Let me very warmly recommend putting our Up-Goer Five session into your EGU25 calendar! I mean, just have a look at these amazing abstract titles (using only the 1000 most used English words). I can guarantee that this will be an extremely informative and fun session! 🤓🧑‍🎓 #EGU25 @egu.eu

In 2025 so far almost 20% of days in Hamburg have been warmer than the 90th percentile of the 1940-2024 climatology. More than 60% have been warmer than the mean.

Apply for a scholarship for the European Forum Alpbach! Great opportunity for interesting discussions beyond topical silos. 🗣️🌎 There are several options for scholarships, if you are connected to Vorarlberg consider applying here: www.club-alpbach-vorarlberg.at/bewerbungspr...

Zum dreijährigen Geburtstag haben wir Klimadashboard.at und Klimadashboard.de neu gestaltet und mit vielen neuen Features ausgestattet: 💥 neues Design 📬 aktuelle Klimaberichterstattung 🇬🇧 english translations 🌚 dark mode 🚀 ...und vieles mehr!

On the migration of the scientific community to Bluesky: www.nature.com/articles/d41... 🧪

Thanks for joining here!

Klima ist was wir erwarten, Wetter ist was passiert. Aber der Klimawandel verändert immer weiter was wirklich passiert selbst lokal. Die tägliche Temperatur in Hamburg 2024 ist zwar sehr variabel aber klar zu warm wenn wir sie mit der Verteilung 1940-2023 vergleichen.

The 2024 climate summary reports are out and records are falling left and right. I'm adding this as I haven't seen it anywhere else: globally all days were warmer than the 90th percentile of the 1940-2023 distribution and more than half set a new record compared to the same day in previous years. 🥵

The #EGU25 abstract deadline is approaching (Wednesday January 15th 1pm CET). If you are still looking for a session and work on evaluating climate models and/or observational constraints for their future projections, check out our session here: meetingorganizer.copernicus.org/EGU25/sessio...

Are you working on climate model evaluation/improving future projections & their uncertainties at different scales? Join us at #EGU25 for an interesting session on Aggregating and constraining multi-model ensembles! meetingorganizer.copernicus.org/EGU25/sessio...

Hier nochmal zum Nachgucken: Mein Jahresrückblick zum Wetter und Klima 2024.

Hello Bluesky! Follow me for updates on my work 👨‍💻 (climate extremes, future climate projections & their uncertainties, climate model evaluation), climate outreach 🗣️, open science 🔓, and some mountains 🏔️ Follow my bot @weather-climate.bsky.social for the most recent updates of daily temperatures

A train tride between Hamburg and Bregenz later my old bot is now also here on the other side 🤓 Still some polishing to do but should be fully online soon 💪 Let me know if you're interested in a specific location, should be easy to add (on the @ecmwf.bsky.social ERA5 ~25km grid)

EGU-goers, make this 🧨session happen with us at #EGU25 @eurogeosciences.bsky.social and explain your research in just the 1000 most common English words. The first European edition of the Up-Goer 5 challenge 🚀🚀 is a comms session so you can submit an extra abstract blogs.egu.eu/geolog/2024/...

Can recommend!

Now that we're all here 🫠 I want to invite you to something totally different at next years #EGU @eurogeosciences.bsky.social: The Upgoer Five Challenge! 🚀 Explain your research using only the 1000 most common words. Join us, it will be tons of fun & interesting! blogs.egu.eu/geolog/2024/...

Do you (plan to) use Python in Earth sciences? We have a course for you at next year's #EGU: Introduction to Python for Earth System Sciences We'll cover the classics from matplotlib to xarray but happy for suggestions, just comment below! meetingorganizer.copernicus.org/EGU25/sessio...

Now that we're all here 🫠 I want to invite you to something totally different at next years #EGU @eurogeosciences.bsky.social: The Upgoer Five Challenge! 🚀 Explain your research using only the 1000 most common words. Join us, it will be tons of fun & interesting! blogs.egu.eu/geolog/2024/...

I'm thrilled to join Jana Sillmann's group @uni-hamburg.de in May! Looking forward to many new and exciting projects and collaborations 🥳 Huge thanks to @aikovoigt.bsky.social and the whole team @univie.ac.at for a great time and all the things I could learn! Very sad to leave 🫶

(How) can we show the skill of constraining future projections? Model-as-truth tests have been used in the past but only for individual methods. We develop an extensive & consistent testing framework and apply it to five (!) constraining methods. 1/🧵 doi.org/10.1038/s416...

Täglich an Hitzewellen und ihren Änderungen zu forschen macht es irgendwie abstrakt. Wenn ich dann darüber in der Zeitung lese wirds plötzlich wieder sehr real 🥵🥵🥵 (Studie von Philipp Aglas-Leitner in prep) www.derstandard.at/story/300000... @eurogeosciences.bsky.social

If you're at @eurogeosciences.bsky.social 2024 you can hear me talk about this on Wednesday afternoon: meetingorganizer.copernicus.org/EGU24/EGU24-... I've uploaded the presentation as supplementary material if you can't join the talk. Also, feel free to reach out if there are any questions.

The #Energy #Climate & #Environment program at #IIASA is looking for an #IntegratedAssessment modeler to join the #MESSAGEix team! Come work with us on policy-relevant scenarios and state-of-the-art #opensource #ScientificSoftware tools... 📝 iiasa.ac.at/employment/j... 🔌💡

Vor der ÖVP-Parteizentrale forderten heute rund 100 Wissenschafter:innen von der ÖVP Klimapolitik auf Basis von Fakten. at.scientists4future.org/2024/04/04/1...

Guter Artikel in der @diepressecom.bsky.social über unsere Studie zu einem Fehler in der Definition von Hitzeextremen: www.diepresse.com/18290185/irr...

One of the more educational figures from our new study that I really like is hidden in the supplement: effect of ever longer running windows on the extreme frequency using 5000 bootstrap samples of auto-correlated white noise. Paper: doi.org/10.1038/s414...

🚨 Fehler in einer häufig verwendeten Metrik zur Detektion von Hitzewellen enteckt! In unserer Studie in Nature Communications zeigen wir, dass relative Temperaturextreme (sogennante TX90p Events) unterschätzt werden. Der Grund dafür sind zu lange gleitende Zeitfenster.  1/🧵 doi.org/10.1038/s414...

Press release by @univie.ac.at about the paper here: medienportal.univie.ac.at/en/media/rec...

🚨 New paper in @NatureComms We show that relative temperature extremes (TX90p) as used in many studies can be biased by as much as 50%! The bias arises from the use of too long seasonal windows and can easily be corrected. Details below 1/🧵 doi.org/10.1038/s414... 🧪

Are you planning to come to EGU24? Do you love to talk about your research? We have some fun for you: join our Up-Goer Five session and explain your work using only the 1000 most used words in English! 🥳 More here: blog.univie.ac.at/en/research/... @eurogeosciences.bsky.social @univie.ac.at 🧪

Less than a week to submit an abstract for #EGU24. If you work on understanding the contributions of internal variability and forced responses to historical or future climate change and climate impacts (e.g., using large ensembles), then please consider submitting to our session!