This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: Offshore wind farms are a key pillar of the energy transition. The European Union plans to expand offshore wind capacity in the North Sea by 2050.
A new study by the Helmholtz-Zentrum Hereon indicates that a very extensive expansion could influence regional precipitation patterns: While precipitation over the sea could increase, it could decrease in coastal regions. The research provides comprehensive insights into the potential regional climate impacts of future offshore wind farms, which the researchers emphasize must always be planned in harmony with the environment. The study was published in Communications Earth & Environment.
Researchers at Hereon's Institute of Coastal Systems—Analysis and Modeling used the high-resolution regional climate model COSMO-CLM to simulate various technical offshore wind energy expansion scenarios. The simulations were based on weather data covering the period from 2008 to 2017. By analyzing an entire decade, the researchers were able to derive mean atmospheric dynamics across a wide range of weather conditions while reducing the influence of year-to-year variability.
This approach allows potential long-term effects to be identified more robustly. The simulations included both existing and potential future offshore wind farm areas in the North Sea and Baltic Sea. The researchers also considered the effects of wind turbines on wind speed, atmospheric mixing and moisture transport.
Their aim was to gain a better understanding of the fundamental atmospheric processes that could be triggered by large offshore wind farm clusters. "Our work helps ensure that the further expansion of offshore wind energy in Europe can be aligned with the requirements of climate protection, environmental protection and coastal management," says Dr. Naveed Akhtar, lead author of the study.
The scenario simulated in the study represents a purely technical expansion pathway that exceeds the European Union's current offshore wind deployment targets. It includes all designated areas in the North Sea and Baltic Sea that have been identified for potential offshore wind energy development. For these areas, the researchers assumed maximum deployment, resulting in an installed capacity that would substantially exceed the currently discussed target of 300 GW by 2050.
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