Geoscience Data Journal
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| DATA ARTICLE
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DASNordicSLR—A Regional Dataset of Sea Level
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Projections for Northern Europe
Corinna Jensen® | Frank Janssen | Tim Kruschke
Federal Maritime and Hydrographic Agency (BSH), Hamburg, Germany
Correspondence: Corinna Jensen (corinna.jensen@bsh.de)
Received: 5 August 2025 | Revised: 10 February 2026 | Accepted: 16 February 2026
Keywords: climate change | German coast | IPCC AR6 projections | sea level change | vertical land motion
ABSTRACT
Sea level rise is an inevitable consequence and one of the most significant threats posed by climate change, increasing the risk of
flooding in low-lying areas along the German coast. Based on the IPCC 6th Assessment Report (AR6) projections, we aimed to
deliver improved projections of relative sea-level change for Northern Europe’'s coastal regions. These projections are available
as spatial data up to 2150. While most drivers of sea level change operate on a continental or global scale, vertical land motion
is a regional factor—particularly relevant in Northern Europe—resulting from glacial isostatic adjustment and local processes.
By combining the IPCC projections of absolute sea level change with a new, high-resolution vertical land motion model for
Fennoscandia, an optimised set of projections for relative sea level change for the North Sea and Baltic Sea was developed. In
this context, the spatial resolution changes from the 1x1 grid commonly used in AR6 datasets to the finer 1/6 x 1/12 grid of the
‚egional land motion model. This results in local differences in sea level rise by 2100 up to -200mm to +500 mm within the do-
main. This dataset represents a contribution to the DAS core service “Climate and water”, the operational climate service operated
by four federal authorities under the umbrella of the German Federal Ministry of Transport.
1 | Introduction
As rising sea levels and increasing extreme water level events
pose increasing risks to coastal areas, the need for enhanced
protection along the coastlines will become more urgent in the
coming decades to prevent damage to critical infrastructure and
ensure public safety (Kiesel et al. 2023). Accurate projections of
sea level rise (SLR) are crucial for effective planning and risk
management, particularly concerning coastal infrastructure and
transportation networks (Arns et al. 2015). Regional sea level
changes are influenced by complex interactions between global
sea level rise and local land uplift or subsidence, which can vary
significantly across different locations (Khan et al. 2015). Along
the coasts of Northern Europe, this is particularly influenced by
glacial isostatic adjustment (GIA), which is the adjustment of the
Zarth that leads to a new equilibrium state due to the redistribu-
tion of surface ice and ocean masses and the flow of mantle ma-
terial driven by the decay of the Fennoscandinavian ice sheets
since the Last Glacial Maximum (LGM) (Brandes et al. 2025).
The probably most comprehensive set of projections of sea
level rise under different climate scenarios is provided by the
Dataset details:
Identifier: https://doi.bsh.de/10.60751/3x97-gp60
Creator: Corinna Jensen
Dataset correspondence: DAS-Basisdienst@bsh.de
Title: DASNordicSLR
Publisher: Federal Maritime and Hydrographic Agency (BSH Hamburg Germany)
Publication year: 2025
Version: v1.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium,
provided the original work is properly cited.
© 2026 The Author(s). Geoscience Data Journal published by Royal Meteorological Society and John Wiley & Sons Ltd.
Geoscience Data Journal, 2026; 13:e70065
attps://doi.org/10.1002/2dij3.70065
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