March started, and our nextGEMS hackathon too! On Monday 4th, approximately 129 participants arrived at the ravishing building that houses the Max Planck Institute for Meteorology (MPI-Met), in the port city of Hamburg, in Germany. The 4th km-scale Hackathon, co-organized by three climate science projects (nextGEMS, EERIE, and WarmWorld), welcomed professionals from different scientific backgrounds, levels of expertise and diverse nationalities, representing a variety of institutions.

The hackathon opened up with a set of introductory talks. Bjorn Stevens, welcomed everyone and encouraged the attendants to seize the event as an opportunity to learn from each other. After some logistic information provided by one of the nextGEMS Project Coordinators, Elina Plesca, the updates on the Earth System models used in the nextGEMS and EERIE projects started. Scientific Programmer at the MPI-Met, Dian Putrasahan, talked about how the hackathon could help us understand how smaller scale ocean features like eddies could affect ocean circulation, carbon fluxes and storms. Additionally, one breakout group will explore and gain insights as to why sea-ice holes appear in our simulations.

Our engaged participants listening to the introductory talks

As part of the Storms & Society segment of the project, researcher Eulàlia Baulenas shared with the audience how this nextGEMS fragment is trying to reduce the gap between climate research and tangible action. Moreover, the team announced the launching of a survey that will contribute to understand knowledge networks and their interactions during the hackathon. It will be available online from Wednesday, March 6th.

On another note, the Hamburg-based science communication company with expertise in Film, Design and IT, Latest Thinking, stressed the importance of transmitting scientific knowledge and research through explanatory videos. Especially, as an effort to reach audiences in the policy-making fora. The hackathon continued with a captivating keynote executed by Daniela Jacobs, meteorologist and Director of the Climate Service Center in Germany (GERICS). She highlighted the importance of relying on and utilizing data already gathered and documented by climate institutions in the completion of new research (more on this talk will be released in a separate blogpost). 

IFS Introduction Talk held by Thomas Rackow

To finish the first hackathon day, the participants enjoyed an “Ice-Breaker” session, where they were able to catch-up and exchange their thoughts about the intense hacking days ahead.

From the 4th to the 8th of March 2024, the portuary city of Hamburg (Germany) will host our upcoming 4km-scale Hackathon. This is the fourth hackathon of the nextGEMS project, and this year it will be co-organized by two other climate modelling projects: European Eddy-Rich ESMs (better known as EERIE) and WarmWorld. The event will mainly take place in the Max Plack Institute  (MPI) for Meteorology, and some sessions will happen in the buildings of the University of Hamburg, the Geomatikum, and the Pharmacy building.

As an exploratory hacking marathon – commonly known as a hackathon, our event will bring together professionals and experts from a wide variety of areas within the climate science field to find and fix bugs in the existing models and work on extrapolating current and past data to create future scenarios. Overall, the 4km-scale hackathon will provide an environment where the participants can programme, model, collaborate, and exchange ideas.

In addition to the model development during the hacking periods, the occasion will also supply a space for the diffusion of knowledge. Daniel Klocke and Thomas Rackow will talk about the Earth System models used in nextGEMS: ICON and IFS – respectively. Moreover, there will be two keynotes: one by the meteorologist Daniela Jacobs about the Earth Visualisation Engines (EVE) for climate initiative, and another by Climate Physics Director at MPI, Sarah Kang, about the possible shift in mechanistic controls of tropical Pacific surface warming pattern. In case you were not already hooked by that, two special side events will also take place with the immersive experience of visiting the Wind Tunnel at the University of Hamburg and the DKRZ supercomputer Levante.

All the information about the venue, transportation, accommodation, programme, and getting ready is gathered online on the hackathon’s official website. In case you are interested in our previous hackathons, you are able to find more information about them on the nextGEMS official website. Furthermore, we will be giving live updates about the event on our Mastodon and LinkedIn accounts, so don’t forget to follow us and stay tunned! Do you have further questions? Then we are happy to answer them via email at and in person at the event!


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