Articles | Volume 17, issue 1
https://doi.org/10.5194/os-17-17-2021
https://doi.org/10.5194/os-17-17-2021
Research article
 | 
04 Jan 2021
Research article |  | 04 Jan 2021

Large-scale changes of the semidiurnal tide along North Atlantic coasts from 1846 to 2018

Lucia Pineau-Guillou, Pascal Lazure, and Guy Wöppelmann

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Latest update: 24 Feb 2024
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Short summary
We investigated the long-term changes of the principal tidal component M2 along North Atlantic coasts, from 1846 to 2018. We analysed 18 tide gauges. We found that M2 variations are consistent at all the stations in the North-East Atlantic, whereas some discrepancies appear in the North-West Atlantic. The similarity between the North Atlantic Oscillation and M2 variations in the North-East Atlantic suggests a possible influence of the large-scale atmospheric circulation on the tide.