Ocean Science
Ocean Science
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Articles | Volume 15, issue 6
Articles | Volume 15, issue 6
https://doi.org/10.5194/os-15-1593-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-15-1593-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 6
Research article
 | 
03 Dec 2019
Research article |  | 03 Dec 2019

Commonly used methods fail to detect known propagation speeds of simulated signals from time–longitude (Hovmöller) diagrams

Yair De-Leon and Nathan Paldor

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Latest update: 22 Oct 2025
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Short summary
Using simulated signal of sea surface height anomalies (SSHA) where the phase speed of the dominant mode is known a priori, we demonstrate that four of the common methods employed in estimating the propagation speed of SSHA do not identify the correct input mode. This finding explains the lack of progress made in recent years in bridging the gap between the "too fast" Rossby wave phase speed observations by satellites and the phase speed in the highly accurate linear trapped wave theory.
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