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 1 × 1 grid commonly used in AR6 datasets to the finer 1/6 × 1/12 grid of the regional land motion model. This results in local differences in sea level rise by 2100 up to −200 mm to +500 mm within the domain. 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.
Jensen et al. (Wed,) studied this question.
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