Thomas Jung | Lightnews

Thomas Jung @thomasjung.bsky.social · Dec 18

Pleased to share our Year of Polar Prediction (YOPP) synthesis paper on achievements, impacts, and lessons learned — and what’s next for polar prediction.
journals.ametsoc.org/view/journal...

journals.ametsoc.org

EERIE Project @eerie-project.eu · Dec 17

'Taming the Petabytes' — A story on how our colleagues with the DKRZ have made km-scale climate data usable.

Read on and learn more about a strategy combining virtual datasets, a cloud storage emulator, and a flexible cataloging framework.

↪️ eerie-project.eu/blog/2025/12...

#ClimateResearchNet

Taming the Petabytes: Making km-scale climate data usable - EERIE

In the past few years, climate modeling has taken a remarkable leap forward, especially with the development of km-scale Earth system models (ESMs). These

eerie-project.eu

Amal John @amaljohn.bsky.social · Dec 10

🌪️ Tales from the Storm at #AGU24!
Check out our km-scale storyline simulations of Hurricane Helene and other 2024 extremes.

📢 @thomasjung.bsky.social will present: How storyline simulations answer “what if” questions.
📅 Tue, 10 Dec 2024📍NH22B, 202 A

✨ Learn more: doi.org/10.22541/ess...

EERIE Project @eerie-project.eu · Apr 28

🌐 It's the EGU time of the year again!

The @egu.eu General Assembly 2025 will feature an extensive participation by #EERIEproject researchers. We’ve put together all the sessions in which they’ll participate and the posters they’ll have displayed.

Read below! ⤵️
eerie-project.eu/news/2025/04...

EERIE Project @eerie-project.eu · Apr 4

💼 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...

Nikolay Koldunov @oceanographer.bsky.social · Mar 11

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

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

Nikolay Koldunov @oceanographer.bsky.social · Feb 27

🚨 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

Thomas Jung @thomasjung.bsky.social · Feb 24

At AWI, we contribute to the EU #DestinationEarth (#DestinE) initiative with storyline simulations and more. These storylines explore how extreme weather events – like the 2019 Paris heatwave or the 2024 European floods – could unfold in different climate scenarios, like in a 2ºC warmer world.

ECMWF @ecmwf.int · Feb 24

🌍🌐 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...

Nikolay Koldunov @oceanographer.bsky.social · Feb 19

Preprint summarizing the first results from the nextGEMS project, which prepares several coupled models to run at kilometer scale: egusphere.copernicus.org/preprints/20... 🧪

This image is a global visualization of aerosol distributions on September 5, 2020, at 00:00 UTC. It represents different types of aerosols using a color-coded scheme:
• Red represents dust (du), primarily visible over arid regions like the Sahara Desert and extending into the Atlantic.
• Blue indicates sea salt (ss), prominent over the oceans, particularly in stormy regions.
• Green signifies carbonaceous aerosol (ca), which is associated with biomass burning and pollution, visible over regions like the Amazon, Central Africa, and parts of Southeast Asia.
• Yellow shows sulfuric aerosol (su), often linked to volcanic emissions and industrial activity.

The image is overlaid on a world map with latitude and longitude markers. The transparency of the colors varies to indicate concentration levels, with fully transparent areas representing minimal aerosol presence and fully opaque areas representing maximum concentrations. The right-hand legend provides a scale for interpreting the aerosol concentrations in milligrams per square meter.

Thomas Jung @thomasjung.bsky.social · Feb 12

Happy to share our latest paper, which summarizes the key outcomes of the Year of Polar Prediction (YOPP)—a decade-long international effort (2013–2022) led by the WMO’s World Weather Research Programme.

Read the full paper here: journals.ametsoc.org/view/journal...

journals.ametsoc.org

Nikolay Koldunov @oceanographer.bsky.social · Feb 4

🚨 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

EERIE Project @eerie-project.eu · Jan 24

Thanks to the Swiss knives purchased during our time in #Zürich🇨🇭 for the #EERIE25 General Assembly, we've managed to slice and squeeze a three-day meeting into a 4-minute video summary 📹

▶️ Whether you attended or not, this you should not miss! www.youtube.com/watch?v=DezJ...

#EERIE25 General Assembly summary

YouTube video by EERIE Project

www.youtube.com

Thomas Rackow 🧊 @trackow.bsky.social · Jan 10

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)

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

Thomas Jung @thomasjung.bsky.social · Dec 18

New webpage gives a concise overview of the Destination Earth (DestinE) digital twin on Climate Change Adaptation (Climate DT) and its functionalities, models, simulations and how to access data via the DestinE Platform.
destine.ecmwf.int/climate-chan...

Climate Change Adaptation Digital Twin

destine.ecmwf.int

EERIE Project @eerie-project.eu · Dec 16

Starting in 90 mins!👇
Info + link: eerie-project.eu/event/storms...
#ClimateResearchNet

Thomas Jung @thomasjung.bsky.social · Dec 10

Looking forward to present our recent storyline work on extreme hydological events in fall 2024

Amal John @amaljohn.bsky.social · Dec 10

🌪️ Tales from the Storm at #AGU24!
Check out our km-scale storyline simulations of Hurricane Helene and other 2024 extremes.

📢 @thomasjung.bsky.social will present: How storyline simulations answer “what if” questions.
📅 Tue, 10 Dec 2024📍NH22B, 202 A

✨ Learn more: doi.org/10.22541/ess...

Thomas Rackow 🧊 @trackow.bsky.social · Dec 10

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)

Thomas Jung @thomasjung.bsky.social · Dec 5

In 2023, global mean temperature approached 1.5K above pre-industrial levels, with our study suggesting that a record-low planetary albedo—driven by declining low-cloud cover—helps explain the unexplained portion of the warming beyond (expected) anthropogenic influences and El Niño.

Thomas Rackow 🧊 @trackow.bsky.social · Dec 5

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)

Recent global temperature surge intensified by record-low planetary albedo

In 2023, the global mean temperature soared to almost 1.5K above the pre-industrial level, surpassing the previous record by about 0.17K. Previous best-guess estimates of known drivers including anthr...

doi.org

Thomas Rackow 🧊 @trackow.bsky.social · Dec 5

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)

Recent global temperature surge intensified by record-low planetary albedo

In 2023, the global mean temperature soared to almost 1.5K above the pre-industrial level, surpassing the previous record by about 0.17K. Previous best-guess estimates of known drivers including anthr...

doi.org

Nikolay Koldunov @oceanographer.bsky.social · Dec 5

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

Thomas Rackow 🧊 @trackow.bsky.social · Dec 2

This is joint work with many colleagues from @ecmwf.bsky.social, including @clessig.bsky.social @xpedruzo.bsky.social @jesper.drams.ch
@fpappenberger.bsky.social,and #AWI colleagues
@oceanographer.bsky.social @thomasjung.bsky.social

Read more on it here destine.ecmwf.int/news/ai-base...
(7/7)

AI-based weather models: promising future supporting climate science

AI-based weather models have made transformational progress in the last years. Find out more in a preprint paper co-authored by ECMWF and AWI.

destine.ecmwf.int

Thomas Jung @thomasjung.bsky.social · Nov 29

New class of model bugs detected: resolution-dependent bugs emerge as we transition to kilometer-scale climate models, revealing issues hidden in lower resolutions. Preprint available, thanks to work in the EU projects nextGEMS and @eerie-project.bsky.social. doi.org/10.5194/egus...

A case for open communication of bugs in climate models, made with ICON version 2024.01

Abstract. Climate models are not just numerical representations of scientific knowledge, they are also human-written software programs. As such, they contain coding mistakes, which may look mundane, b...

doi.org

Nikolay Koldunov @oceanographer.bsky.social · Nov 29

🌊 Ocean currents around Antarctica from our high-resolution (3 km) ocean model. 🧪

#FESOM #SciArt

Nature Portfolio @natureportfolio.nature.com · Nov 12

A paper in Communications Earth & Environment presents an automated system that unveils the climate change signal of the day in near-real-time storylines. The system suggests that storm Boris deposited about 9% more rain due to human-induced warming. go.nature.com/3ClX3Wq 🧪

This is figure 1, which shows the storylines of the extreme rainfall of the September 2024 storm Boris.

Nikolay Koldunov @oceanographer.bsky.social · Nov 25

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...

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 (48.5-49°N and 2.0-3.0°E). This comparison highlights the varying intensity of the heatwave across different climates.

Nikolay Koldunov @oceanographer.bsky.social · Nov 23

🚨 Freshwater bottleneck in the Arctic? 🌊
A Beaufort Gyre freshwater release shifts to a buffer zone near Greenland, delaying Arctic freshwater flow to the North Atlantic. Implications for ocean stratification, salinity anomalies, & AMOC?

Read in Nature Geoscience: www.nature.com/articles/s41...

Arctic freshwater anomaly transiting to the North Atlantic delayed within a buffer zone - Nature Geoscience

Freshwater being released from the Beaufort Gyre is accumulating in an Arctic Ocean buffer zone before it can reach the North Atlantic, according to an analysis of satellite observation and modelling.

www.nature.com

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