Nikolaus Groll

Nikolaus Groll is a Researcher at the Helmholtz-Zentrum Hereon, specializing in coastal climate and regional sea level changes. His work focuses on storm surge modeling, wave climate variability, and the detection and attribution of coastal hazards in the Baltic Sea region.

Research Interests: Groll’s research investigates the interplay between atmospheric conditions, prefilling of the Baltic Sea, and extreme coastal water levels. He employs hydrodynamic models like TRIM-NP to analyze historical storm surges (e.g., 2017, 2019, 2023) and their climatological context.

Publications: His recent article in Natural Hazards and Earth System Sciences (2025) examines the causes of severe Baltic Sea storm surges, emphasizing the role of wind patterns, sea level anomalies, and climate variability. The study highlights how moderate wind speeds combined with prefilling can produce extreme water levels, while the 2023 event demonstrated unprecedented wind-driven surges.