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Articles | Volume 16, issue 3
Articles | Volume 16, issue 3
https://doi.org/10.5194/os-16-703-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/os-16-703-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 3
Research article
 | 
12 Jun 2020
Research article |  | 12 Jun 2020

Are tidal predictions a good guide to future extremes? – a critique of the Witness King Tides project

John Hunter

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Latest update: 08 Aug 2025
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Short summary
Witness King Tides (WKT) is a citizen-science project collecting photos of the shoreline at the time of highest predicted tide each year, with the aim of indicating the flooding that may occur routinely with sea-level rise. However, effects such as storm surges may affect the results, leading to significantly lower tides than expected. Tidal observations from the GESLA-2 global database are analysed to indicate regions of the world where WKT should perform well and others where it would not.
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Special issue
Developments in the science and history of tides (OS/ACP/HGSS/NPG/SE...