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. 2023 May 3;10:251. doi: 10.1038/s41597-023-02160-9

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 6 — Validation of the instrument v2018 (I810) against the Sofar Spotter instrument (W0173), reproduced from⁸². The instruments were deployed close to each other, but drifted slightly with time. Still, agreement within 5% is obtained for the significant wave height estimate (Hs, top), and the location and height of the wave spectrum peak (bottom). Slight differences are observed regarding the high frequency tail of the spectra. This is due to the increased noise of the GPS-based measurement methodology of the Sofar Spotter in quiet conditions corresponding to waves in ice, compared with the accelerometer-based measurement methodology of the v2018 in the same conditions.