3rd Data Assimilation Days 2025: Two Days of Scientific Exchange in Griebnitzsee

The CRC 1294 held the third edition of its Data Assimilation Days on 23–24 September 2025 at Griebnitzsee, bringing together researchers for two days of scientific exchange and interesting presentations.

The event opened with the 8th Kálmán Lecture, delivered by Daniela Calvetti (Case Western Reserve University): “Dictionary Learning at the Crossroads of Inverse Problems and Data Science.”

The first day also featured a poster session, where participants were invited to present and discuss their current research in an open and interactive setting.

The second day offered a series of talks by invited experts from different institutions:

• Harrie-Jan Hendricks-Franssen (Forschungszentrum Jülich): Data Assimilation with Terrestrial System Models
• Daniel Rudolf (University of Passau): Slice Sampling
• Elisabeth Ullmann (Technical University of Munich): Uncertainty Quantification Analysis of Bifurcations of the Allen–Cahn Equation with Random Coefficients

We were also very pleased to have two early-career researchers from our CRC presenting their work:

• Maia Tienstra: Early Stopping for Prior Selection in Bayesian Inverse Problems
• Josie König: Balancing-based Model Order Reduction for Data Assimilation

With a relatively small group of participants, this year’s meeting offered a cosy, personal atmosphere that fostered fruitful scientific exchange. Thanks everyone for joining!