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The impact of global sea-level rise on tides might affect tidal energy decisions

According to a study conducted by the National Oceanography Centre (NOC), the University of Southampton and Deltares, the impact of global sea-level rise on tides has inferences on future coastal flood risk, harbor management, and the long-term planning of tidal energy sites.

The study concluded that the sea-level rise can significantly change tides all over the world, especially on the east coast of the Americas, northwest Europe, north coast of Russia, across Asia and Australasia.
 
Existing and proposed tidal energy sites long-term planning might suffer considerable consequences. For example, if global sea-level rises by two meters, the Swansea Bay tidal lagoon may get less energy from the tide in the Bristol Channel (UK).
 
Nonetheless, other studies also suggest an increase in tidal energy available under a one meter sea level rise scenario, since tidal change is not always incremental with the sea-level rise.
 
“This research shows that the tides that many people think of as constant can be affected by climate change and sea level rise”, says Kevin Horsburgh, professor and co-author of the paper.
 
Considering plausible estimates of global sea level rise according to the Intergovernmental Panel on Climate Change (IPCC), scenarios going as high as 10m of sea level rise were tested, but the results considered were those of 0.5, 1 and 2 meters of sea level rise. The study also considered the effect of fixed and receding coastlines and the effect of melting of the polar ice sheets combined with non-uniform patterns of sea level rise.

This study was published in Continental Shelf Research and it is part of National Oceanography Centre (NOC) research into modelling tides, global sea-level rise, and sea level extremes.
 
In order to develop a tidal project, an extensive analysis of metocean conditions is necessary. To solve this problem, Open Ocean has developed Metocean Analytics, the perfect tool to obtain metocean studies based on historical waves, currents, wind and ocean temperature datasets. 

For more information, contact us and ask for a demo.
  
Source: National Oceanography Center