Sea-level variability and change along the Norwegian coast between 2003 and 2018 from satellite altimetry, tide gauges, and hydrography

Mangini, Fabio; Chafik, Léon; Bonaduce, Antonio; Bertino, Laurent; Nilsen, Jan Even Ø.

doi:https://doi.org/10.5194/os-18-331-2022

Articles | Volume 18, issue 2

https://doi.org/10.5194/os-18-331-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-18-331-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 2

Research article

|

18 Mar 2022

Research article |

| 18 Mar 2022

Sea-level variability and change along the Norwegian coast between 2003 and 2018 from satellite altimetry, tide gauges, and hydrography

Fabio Mangini, Léon Chafik, Antonio Bonaduce, Laurent Bertino, and Jan Even Ø. Nilsen

Data sets

The ALES-retracked satellite altimetry dataset DGFI-TUM https://openadb.dgfi.tum.de

Hydrographic normals and long-term variations in Norwegian coastal waters J. Aure and Ø. Østensen https://resources.marine.copernicus.eu/product-download/SEALEVEL_GLO_PHY_L3_REP_OBSERVATIONS_008_062

Short summary

We validate the recent ALES-reprocessed coastal satellite altimetry dataset along the Norwegian coast between 2003 and 2018. We find that coastal altimetry and conventional altimetry products perform similarly along the Norwegian coast. However, the agreement with tide gauges slightly increases in terms of trends when we use the ALES coastal altimetry data. We then use the ALES dataset and hydrographic stations to explore the steric contribution to the Norwegian sea-level anomaly.