Articles | Volume 14, issue 2
https://doi.org/10.5194/os-14-187-2018
https://doi.org/10.5194/os-14-187-2018
Research article
 | 
15 Mar 2018
Research article |  | 15 Mar 2018

A comparison of methods to estimate vertical land motion trends from GNSS and altimetry at tide gauge stations

Marcel Kleinherenbrink, Riccardo Riva, and Thomas Frederikse

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Latest update: 28 Mar 2024
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Short summary
Tide gauges observe sea level changes, but are also affected by vertical land motion (VLM). Estimation of absolute sea level requires a correction for the local VLM. VLM is either estimated from GNSS observations or indirectly by subtracting tide gauge observations from satellite altimetry observations. Because altimetry and GNSS observations are often not made at the tide gauge location, the estimates vary. In this study we determine the best approach for both methods.