Articles | Volume 25, issue 4
https://doi.org/10.5194/nhess-25-1439-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-25-1439-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Apr 2025
Research article |
| 15 Apr 2025
| 15 Apr 2025
Untangling the waves: decomposing extreme sea levels in a non-tidal basin, the Baltic Sea
Marvin Lorenz
CORRESPONDING AUTHOR
Leibniz Institute for Baltic Sea Research Warnemünde, Rostock, Germany
Federal Waterways Engineering and Research Institute, Hamburg, Germany
Katri Viigand
Department of Cybernetics, School of Science, Tallinn University of Technology, Tallinn, Estonia
Ulf Gräwe
Leibniz Institute for Baltic Sea Research Warnemünde, Rostock, Germany
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Short summary
This study divides the sea level components that contribute to extreme sea levels in the Baltic Sea into three parts: the filling state of the Baltic Sea, seiches, and storm surges. In the western part of the Baltic Sea, storm surges are the main factor, while in the central and northern parts, the filling state plays a larger role. Using a numerical model, we show that wind and air pressure are the main drivers of these events, with Atlantic sea level also playing a small role.
This study divides the sea level components that contribute to extreme sea levels in the Baltic...
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