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/
🌍 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
🚨 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
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... 🧪
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
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. 🧪🌊
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/...
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? :)
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
Model: IFS-FESOM | U component of the wind | Project: nextGEMS | Simulations: @trackow.bsky.social
#SciArt
December 5, 2024 at 10:26 AM
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
Model: IFS-FESOM | U component of the wind | Project: nextGEMS | Simulations: @trackow.bsky.social
#SciArt
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
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
December 3, 2024 at 8:36 AM
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
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
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
Model: IFS-FESOM | Shown: U component of wind | Project: nextGEMS #SciArt
December 1, 2024 at 11:39 AM
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
Model: IFS-FESOM | Shown: U component of wind | Project: nextGEMS #SciArt
November 29, 2024 at 8:19 AM
🌊 New insights into Arctic atlantification! 🌡️ 🧪
A new study in Science Advances reveals that sea ice decline, driven by climate warming, is the dominant driver behind the warming and salinity increase in the Eurasian Basin during the 2010s.
📖 Read more: doi.org/10.1126/scia...) #FESOM
A new study in Science Advances reveals that sea ice decline, driven by climate warming, is the dominant driver behind the warming and salinity increase in the Eurasian Basin during the 2010s.
📖 Read more: doi.org/10.1126/scia...) #FESOM
November 28, 2024 at 10:47 AM
🌊 New insights into Arctic atlantification! 🌡️ 🧪
A new study in Science Advances reveals that sea ice decline, driven by climate warming, is the dominant driver behind the warming and salinity increase in the Eurasian Basin during the 2010s.
📖 Read more: doi.org/10.1126/scia...) #FESOM
A new study in Science Advances reveals that sea ice decline, driven by climate warming, is the dominant driver behind the warming and salinity increase in the Eurasian Basin during the 2010s.
📖 Read more: doi.org/10.1126/scia...) #FESOM
I really wanted to apply, but they blocked me for some reason. :((( I guess no $100K for me…
November 27, 2024 at 9:54 PM
I really wanted to apply, but they blocked me for some reason. :((( I guess no $100K for me…
First scam attempt on Bsky. I was contacted by an account impersonating a respected scientist from my field. Here’s the conversation I had (deleted the names):
November 27, 2024 at 9:45 PM
First scam attempt on Bsky. I was contacted by an account impersonating a respected scientist from my field. Here’s the conversation I had (deleted the names):
Global Hackathon on km-scale climate modeling!
This is going to be fun! :) While it’s mostly atmospheric experts, we’re aiming to bring a strong ocean component too.
Website: www.wcrp-esmo.org/activities/w...
Our @eerie-project.bsky.social project is proud to be a partner!
This is going to be fun! :) While it’s mostly atmospheric experts, we’re aiming to bring a strong ocean component too.
Website: www.wcrp-esmo.org/activities/w...
Our @eerie-project.bsky.social project is proud to be a partner!
November 25, 2024 at 1:20 PM
Global Hackathon on km-scale climate modeling!
This is going to be fun! :) While it’s mostly atmospheric experts, we’re aiming to bring a strong ocean component too.
Website: www.wcrp-esmo.org/activities/w...
Our @eerie-project.bsky.social project is proud to be a partner!
This is going to be fun! :) While it’s mostly atmospheric experts, we’re aiming to bring a strong ocean component too.
Website: www.wcrp-esmo.org/activities/w...
Our @eerie-project.bsky.social project is proud to be a partner!
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 +2°C future. Check out our work led by Amal John: essopenarchive.org/users/852952...
November 25, 2024 at 12:05 PM
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 +2°C future. Check out our work led by Amal John: essopenarchive.org/users/852952...