Nikolay Koldunov
Oceanographer, climate and ocean modeler, interested in ML for climate and LLMs. Senior scientist at AWI. Working on FESOM2 unstructured ocean model, km-scale climate modelling, data visualisation. More info: koldunovn.github.io
- 🌍 ClimSight is a system that allows users to get answers to climate-related questions based on very local climate information. Check out the short video to learn the core ideas, and dive into the paper if you’d like to explore the details: 📄 lnkd.in/eReWQ4x6 🧪
- How much do LLMs “know” about present-day climate? We asked 17 models for July 1991–2020 temperatures at 15 000+ land points — and many did surprisingly well! Preprint: arxiv.org/abs/2510.08043 🧪 #LLM #Climate
- DestinE’s just dropped “From Past to Future” videos: km-scale replays of real floods & hurricanes under past, present & +2 °C climates. See exactly how warming reshapes impacts—turning high-res science into must-see visuals. 🧪 destine.ecmwf.int/news/storyli... www.youtube.com/watch?v=5V62...
- New opportunity in our group!
- How will interaction with geophysical data evolve in the age of AI? 🤖🌍 In our latest preprint, we explore this question - not just conceptually, but with a hands-on prototype using the PANGAEA archive. Check it out! arxiv.org/abs/2503.05854
- 🚨 Last chance to submit your application! 🚨 🌊 Scientist in High-Resolution Sea Ice Modeling 🔗 jobs.awi.de/Vacancies/19... 🧠 Scientist in AI-based Emulation for High-Resolution Sea Ice Modeling 🔗 jobs.awi.de/Vacancies/19... Please share! 🧪❄️🌍 #ScienceJobs #SeaIce #AI
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- One of the greatest things we do in #DestinE is high-resolution storylines, which show how present-day extreme events might unfold in the future. Check out this ECMWF blog post for details on how it’s done! 🧪
- Alfred Wegener institute is finally here @awiexpedition.bsky.social !!!
- Preprint summarizing the first results from the nextGEMS project, which prepares several coupled models to run at kilometer scale: egusphere.copernicus.org/preprints/20... 🧪
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- My wife just won the Bremen Women's Chess Championship 2025 and qualified for the German National Championship! Next stop: Munich! So proud of her!
- It's always great to visit Helsinki-one of my favorite cities in the world. This time, I caught a glimpse of sea ice, which we’ll be modeling in the @terradt.bsky.social project (by the way, we're hiring!). The project kicked off in Helsinki this week.
- 🚨 Job Alert! 🚨 Our team is hiring for the @terradt.bsky.social project. 🌊 Scientist in High-Resolution Sea Ice Modeling 🔗 jobs.awi.de/Vacancies/19... 🧠 Scientist in AI-based Emulation for High-Resolution Sea Ice Modeling 🔗 jobs.awi.de/Vacancies/19... Please share! 🧪❄️🌍 #ScienceJobs #SeaIce #AI
- This is the description of our km-scale coupled climate model configuration. A lot of details in a thread from @trackow.bsky.social 🧪
- New IBCAO (International Bathymetric Chart of the Arctic Ocean) version is out: doi.org/10.1038/s415... Many of us who study the Arctic now need to update our Arctic Bathymetry posters on our walls! :) Figure below shows a comparison of versions 4 and 5. 🧪🌊
- Great thread from @jhauck.bsky.social with more details on this study 🧪
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- Sea ice paper alert, congratulations to my colleagues! Krumpen, T., von Albedyll, L., Bünger, H.J. et al. Smoother sea ice with fewer pressure ridges in a more dynamic Arctic. Nat. Clim. Chang. (2025). doi.org/10.1038/s415... #Arctic #climate 🌊 🥼❄️ rdcu.be/d5rtv
- Increased sunlight and more nutrients in the Arctic Ocean won’t boost carbon storage as expected :( 🌊🧪 #FESOM Article in Nature Climate Change: www.nature.com/articles/s41... Press release from AWI: www.awi.de/en/about-us/...
- Reposted by Nikolay KoldunovMy book is still out there! Please use, adapt, and help maintain if you find it helpful for teaching!
- Goodbye Washington, it was fun! #AGU24
- Reposted by Nikolay KoldunovJoin me and the polar team here in UCL Earth Sciences + Met Office on an exciting CASE studentship looking at Leveraging Machine Learning algorithms for improved Arctic sea-ice prediction using the Met Office suite of models ❄️ + 💻 +🛰️ www.trees-dla.ac.uk/projects/lev...
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- The Globe in the Smithsonian Museum of Natural History is pretty good, but why the jet colourbar for SST? :)
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- 🧪 Link to the #agu24 talk today: agu.confex.com/agu/agu24/me...
- Oh, that is so cool - enter your name and it will spell it in Landsat images! :)
- 🧪 This is much better version of Antarctica in flames! #SciArt
- Heading to #agu24 from Boston.
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- Program of presentations at the Google booth during #AGU24
- 🧪 New paper on why we’ve seen an extra 0.2°C of global warming in recent years.
- We have a new paper out in @science.org today, led by Helge Goessling from #AWI: The recent global temperature surge in 2023 was intensified by a record-low planetary #albedo 👉 doi.org/10.1126/scie... @thomasjung.bsky.social @ecmwf.bsky.social This is what we found (🧵1/8)
- So true :)
- Please, spread the word! 🌊❄️🧪 Exciting opportunities in polar science! Join Lettie Roach’s new group on Southern Ocean & Antarctic Sea Ice Evolution. Multiple positions open: Postdoc, PhDs, and a Scientific Programmer. Deadline: Dec 31, 2024.
- Wind over the Atlantic from a 5 km resolution model. Different surface types interact with wind in unique ways, which is why the continents are distinctly visible in the wind field. 🧪 Model: IFS-FESOM | U component of the wind | Project: nextGEMS | Simulations: @trackow.bsky.social #SciArt
- Another mind blowing result of AI models in Numerical Weather Prediction. The next step is to train directly on observations.
- Reposted by Nikolay Koldunov📣 And the time has come to open the call for abstracts for the Liège Colloquium on Ocean Dynamics for 2025! 🌊 Topic: Marine CDR emerging views and challenges Date: 26-30 May 2025 Abstract deadline: 31 January 2025 More info? www.ocean-colloquium.uliege.be
- A great example of ocean eddies and how much faster the atmosphere moves compared to the ocean! 🧪
- Earth’s surface painted with 2m temperature. 🧪 Contrasts in temperature between the ocean and land, as well as between different orographic features, allow you to clearly see surface details. Model: IFS-FESOM | Shown: 2m temperature | Project: nextGEMS| Simulations @trackow.bsky.social #SciArt
- AI weather forecast models will likely soon become a significant part of regular weather prediction. They already outperform “traditional” models on many skill scores. But how do these models perform in out-of-sample conditions - across past and future climates? 🧪
- To celebrate Antarctica Day, here is an image of winds around Antarctica as simulated by a 4 km resolution atmospheric model. 🧪 Model: IFS-FESOM | Shown: U component of wind | Project: nextGEMS #SciArt
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- 🌊That’s a very rare and important paper about finding and fixing a (sea ice related) bug in a climate model. We need more papers like this so the community can learn from mistakes. 🌊🧪
- 🌊 A still image of ocean currents around Antarctica from our high-resolution (3 km) ocean model. Let’s hope the compression algorithm shows some mercy on this one. 🧪 #FESOM #SciArt
