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Sebastian Beyer

@sbeyer.net

Scientist and scientific programmer. Working on km-scale climate models.

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Latest posts by Sebastian Beyer @sbeyer.net

Terence Tao (@tao@mathstodon.xyz) It is tempting to view the capability of current AI technology as a singular quantity: either a given task X is within the ability of current tools, or it is not. However, there is in fact a very wid...

My thoughts on the crucial importance of methodology on self-reported AI performance on mathematics competitions, and my policy on commenting on such reports going forward: mathstodon.xyz/@tao/1148814...

19.07.2025 22:37 πŸ‘ 232 πŸ” 52 πŸ’¬ 2 πŸ“Œ 10

Wait, there are math optimizations that are fun and safe?! Sign me up!

--funsafe-math-optimizations

11.06.2025 14:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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To celebrate the kick-off of #UNOC3 and #OOSC in Nice, we share a striking, mesmerising perspective on Mediterranean Marine Heatwaves β€”and their clear amplification by climate change.

From @awi.de storyline simulations, visual by @jawijan.bsky.social

03.06.2025 07:36 πŸ‘ 4 πŸ” 4 πŸ’¬ 1 πŸ“Œ 1
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πŸŒͺ️ Typhoon spotted in a global 4.4km IFS-FESOM run.
Visualizing cloud structures using only model data β€” aiming to match the look of satellite imagery. Impressive how close simulations can get.
@awi.de @blender3d.bsky.social @blender.org

24.04.2025 17:58 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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For a new visualization project @awi.de, I’m currently experimenting with satellite imagery, elevation data, and OSM. Exciting!

@blender.org

07.04.2025 12:33 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Exploring ways to visualise wind together with my colleague @sbeyer.net at AWI. Here’s a glimpse: IFS-FESOM wind speed visualised as coloured particles.

05.04.2025 19:35 πŸ‘ 8 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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🌍🌐 What if we could replay recent extreme weather under different climate conditions? With storyline simulations in the EU’s #DestinE initiative, scientists are reconstructing past, present, and future extreme weather to help us adapt to climate change. Learn more ➑️ destine.ecmwf.int/news/replayi...

24.02.2025 09:52 πŸ‘ 20 πŸ” 8 πŸ’¬ 1 πŸ“Œ 1
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Experimenting a little bit with #blender particle systems and simulated wind data

21.02.2025 10:52 πŸ‘ 10 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
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Sea ice meets ocean eddies, part II!
Folllowing @oceanographer.bsky.social's idea I used the data from my simulation (still #FESOM2 but 10km this time) to explore the flames of the frozen ocean. 🧊 πŸ”₯

08.12.2024 22:38 πŸ‘ 31 πŸ” 8 πŸ’¬ 0 πŸ“Œ 1
Robustness of AI-based weather forecasts in a changing climate Data-driven machine learning models for weather forecasting have made transformational progress in the last 1-2 years, with state-of-the-art ones now outperforming the best physics-based models for a ...

First post on @bsky.app πŸŽ‰:

Can #AI-based weather forecasting models (trained on present-day data) provide skillful forecasts also in different colder and warmer states of the climate system?

Our preprint in arxiv explores this question:
doi.org/10.48550/arX...

Here is what we found so far (🧡1/7)

02.12.2024 09:31 πŸ‘ 47 πŸ” 15 πŸ’¬ 4 πŸ“Œ 4
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To celebrate Antarctica Day, here is an image of winds around Antarctica as simulated by a 4 km resolution atmospheric model. πŸ§ͺ

Model: IFS-FESOM | Shown: U component of wind | Project: nextGEMS #SciArt

01.12.2024 11:39 πŸ‘ 78 πŸ” 18 πŸ’¬ 3 πŸ“Œ 3
The maximum 2m-temperature during the peak heatwave period (July 25, 2019) over France for the different storyline experiments (top panels: a, b, c). The bottom chart illustrates the hourly maximum 2m-temperature from the different experiments for the Paris region inside the black dotted box (48.5-49Β°N and 2.0-3.0Β°E). This comparison highlights the varying intensity of the heatwave across different climates.

The maximum 2m-temperature during the peak heatwave period (July 25, 2019) over France for the different storyline experiments (top panels: a, b, c). The bottom chart illustrates the hourly maximum 2m-temperature from the different experiments for the Paris region inside the black dotted box (48.5-49Β°N and 2.0-3.0Β°E). This comparison highlights the varying intensity of the heatwave across different climates.

The storyline approach isn’t new, but for the first time, we’re using it with 10km resolution! 🌍 See how extreme events might have looked in the past, without climate change, and how they could unfold in a +2Β°C future. Check out our work led by Amal John: essopenarchive.org/users/852952...

25.11.2024 12:05 πŸ‘ 13 πŸ” 6 πŸ’¬ 1 πŸ“Œ 0