Nikolay Koldunov
@oceanographer.bsky.social
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: https://koldunovn.github.io/
Pinned
GitHub - introocean/introocean-en: Introduction to Physical Oceanography by R. Stewart
Introduction to Physical Oceanography by R. Stewart - introocean/introocean-en
github.com
"Introduction to Physical Oceanography" by R. Stewart is now on GitHub. Free for everyone as it always was.
github.com/introocean/i...
github.com/introocean/i...
🌍 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 🧪
📄 lnkd.in/eReWQ4x6 🧪
October 28, 2025 at 11:57 AM
🌍 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 🧪
📄 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
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
October 10, 2025 at 7:03 AM
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
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...
destine.ecmwf.int/news/storyli...
www.youtube.com/watch?v=5V62...
From Past to Future - The Central European Floods, 2024 in a Changing Climate.” – Storm Boris
YouTube video by ECMWF
www.youtube.com
June 23, 2025 at 10:53 AM
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...
destine.ecmwf.int/news/storyli...
www.youtube.com/watch?v=5V62...
New opportunity in our group!
💼 Looking for a #job? We're #hiring!
The @awi.de is seeking to employ a skilled and motivated Scientist with expertise in Python programming and a solid background in oceanic, atmospheric or climate dynamics.
➡️ Check all the details on our website: eerie-project.eu/job-applicat...
The @awi.de is seeking to employ a skilled and motivated Scientist with expertise in Python programming and a solid background in oceanic, atmospheric or climate dynamics.
➡️ Check all the details on our website: eerie-project.eu/job-applicat...
April 4, 2025 at 8:21 AM
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
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
Accelerating Earth Science Discovery via Multi-Agent LLM Systems
This Perspective explores the transformative potential of Multi-Agent Systems (MAS) powered by Large Language Models (LLMs) in the geosciences. Users of geoscientific data repositories face challenges...
arxiv.org
March 11, 2025 at 8:32 AM
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
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
🌊 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
February 27, 2025 at 7:36 AM
🚨 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
🌊 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
Reposted by Nikolay Koldunov
We have taken our Artificial Intelligence Forecasting System (AIFS) into operations today to run side by side with our physics-based weather forecasts. The #AIFS outperforms traditional models for many measures, at a fraction of energy use. ➡️ www.ecmwf.int/en/about/med...
#AI #MachineLearning
#AI #MachineLearning
February 25, 2025 at 11:07 AM
We have taken our Artificial Intelligence Forecasting System (AIFS) into operations today to run side by side with our physics-based weather forecasts. The #AIFS outperforms traditional models for many measures, at a fraction of energy use. ➡️ www.ecmwf.int/en/about/med...
#AI #MachineLearning
#AI #MachineLearning
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! 🧪
🌍🌐 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 ➡️ destine.ecmwf.int/news/replayi...
February 24, 2025 at 11:56 AM
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 !!!
February 19, 2025 at 8:48 PM
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... 🧪
February 19, 2025 at 10:49 AM
Preprint summarizing the first results from the nextGEMS project, which prepares several coupled models to run at kilometer scale: egusphere.copernicus.org/preprints/20... 🧪
Reposted by Nikolay Koldunov
@carbonbrief.org lists our December paper among the most featured 2024 papers, current score 2,644 - top of the charts for @altmetric.com mentions on @bsky.app 🤯
📈 www.carbonbrief.org/analysis-the...
🔓A free-access reprint link to our paper can be found on Helges website www.awi.de/en/about-us/...
📈 www.carbonbrief.org/analysis-the...
🔓A free-access reprint link to our paper can be found on Helges website www.awi.de/en/about-us/...
February 11, 2025 at 10:42 AM
@carbonbrief.org lists our December paper among the most featured 2024 papers, current score 2,644 - top of the charts for @altmetric.com mentions on @bsky.app 🤯
📈 www.carbonbrief.org/analysis-the...
🔓A free-access reprint link to our paper can be found on Helges website www.awi.de/en/about-us/...
📈 www.carbonbrief.org/analysis-the...
🔓A free-access reprint link to our paper can be found on Helges website www.awi.de/en/about-us/...
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!
February 9, 2025 at 4:42 PM
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.
February 7, 2025 at 7:37 PM
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
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
February 4, 2025 at 9:50 AM
🚨 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
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 🧪
Our article is out in @eurogeosciences.bsky.social's GMD journal, on global multi-year kilometre-scale modelling with @ecmwf.bsky.social’s IFS coupled to FESOM2.5 (finer than 5km).
See the paper here: doi.org/10.5194/gmd-...
This is what we found: (🧵1/n)
See the paper here: doi.org/10.5194/gmd-...
This is what we found: (🧵1/n)
Multi-year simulations at kilometre scale with the Integrated Forecasting System coupled to FESOM2.5 and NEMOv3.4
Abstract. We report on the first multi-year kilometre-scale global coupled simulations using ECMWF's Integrated Forecasting System (IFS) coupled to both the NEMO and FESOM ocean–sea ice models, as par...
doi.org
January 13, 2025 at 9:00 AM
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. 🧪🌊
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. 🧪🌊
January 10, 2025 at 1:38 PM
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. 🧪🌊
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 🧪
Massive piece of work by Laurent Oziel and many #AWI colleagues, conducted within the #COMFORT project:
Laurent conducted future 🌊 Arctic Ocean high-resolution simulations that account for climate change AND carbon & nutrient inputs from rivers & coastal erosion.
⬇️
doi.org/10.1038/s415...
Laurent conducted future 🌊 Arctic Ocean high-resolution simulations that account for climate change AND carbon & nutrient inputs from rivers & coastal erosion.
⬇️
doi.org/10.1038/s415...
Climate change and terrigenous inputs decrease the efficiency of the future Arctic Ocean’s biological carbon pump - Nature Climate Change
Changes in the Arctic could impact the oceanic carbon sequestration of the region. Here the authors consider regional biogeochemistry, including coastal erosion and river inputs, to show a 40% reducti...
doi.org
January 6, 2025 at 11:18 PM
Great thread from @jhauck.bsky.social with more details on this study 🧪
🧪
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
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
Smoother sea ice with fewer pressure ridges in a more dynamic Arctic
Nature Climate Change - Pressure ridges, a characteristic feature of Arctic sea ice, play an important role in the ecosystem but pose challenges to shipping. Here the authors use aircraft...
rdcu.be
January 6, 2025 at 7:47 PM
🧪
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/...
🌊🧪 #FESOM
Article in Nature Climate Change: www.nature.com/articles/s41...
Press release from AWI: www.awi.de/en/about-us/...
January 6, 2025 at 3:00 PM
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/...
🌊🧪 #FESOM
Article in Nature Climate Change: www.nature.com/articles/s41...
Press release from AWI: www.awi.de/en/about-us/...
Reposted by Nikolay Koldunov
My book is still out there! Please use, adapt, and help maintain if you find it helpful for teaching!
December 14, 2024 at 7:49 PM
My book is still out there! Please use, adapt, and help maintain if you find it helpful for teaching!
Reposted by Nikolay Koldunov
Join 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...
www.trees-dla.ac.uk/projects/lev...
Leveraging Machine Learning algorithms for improved Arctic sea-ice prediction using the Met Office suite of models | UCL Trees
This project leverages advanced satellite remote sensing and machine learning (ML) to improve Arctic sea-ice forecasting. Traditional sea-ice models often develop significant biases in summer, particu...
www.trees-dla.ac.uk
December 13, 2024 at 7:33 PM
Join 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...
www.trees-dla.ac.uk/projects/lev...
Reposted by Nikolay Koldunov
Exploring the Arctic Ocean? Planning to attend EGU25?
Submit an abstract to our session:"Changes in the Arctic Ocean, Sea Ice, and Subarctic Sea Systems: Observations, Models, and Perspectives" (t.ly/BvM9l)
Spread the word, and you see in Vienna for exciting talks, posters and discussions!
Submit an abstract to our session:"Changes in the Arctic Ocean, Sea Ice, and Subarctic Sea Systems: Observations, Models, and Perspectives" (t.ly/BvM9l)
Spread the word, and you see in Vienna for exciting talks, posters and discussions!
Session OS1.1
t.ly
December 10, 2024 at 2:32 PM
Exploring the Arctic Ocean? Planning to attend EGU25?
Submit an abstract to our session:"Changes in the Arctic Ocean, Sea Ice, and Subarctic Sea Systems: Observations, Models, and Perspectives" (t.ly/BvM9l)
Spread the word, and you see in Vienna for exciting talks, posters and discussions!
Submit an abstract to our session:"Changes in the Arctic Ocean, Sea Ice, and Subarctic Sea Systems: Observations, Models, and Perspectives" (t.ly/BvM9l)
Spread the word, and you see in Vienna for exciting talks, posters and discussions!
The Globe in the Smithsonian Museum of Natural History is pretty good, but why the jet colourbar for SST? :)
December 11, 2024 at 2:11 AM
The Globe in the Smithsonian Museum of Natural History is pretty good, but why the jet colourbar for SST? :)
Reposted by Nikolay Koldunov
Our work will also be (remotely) presented at #AGU24 !
agu.confex.com/agu/agu24/me...
Dec 11, 01:30pm - 02:30pm (Central Time)
Dec 12, 07:30am - 08:30am (Central Time)
agu.confex.com/agu/agu24/me...
Dec 11, 01:30pm - 02:30pm (Central Time)
Dec 12, 07:30am - 08:30am (Central Time)
December 10, 2024 at 10:35 AM
Our work will also be (remotely) presented at #AGU24 !
agu.confex.com/agu/agu24/me...
Dec 11, 01:30pm - 02:30pm (Central Time)
Dec 12, 07:30am - 08:30am (Central Time)
agu.confex.com/agu/agu24/me...
Dec 11, 01:30pm - 02:30pm (Central Time)
Dec 12, 07:30am - 08:30am (Central Time)