Articles | Volume 18, issue 5
https://doi.org/10.5194/os-18-1263-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-18-1263-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Sep 2022
Research article |
| 01 Sep 2022
| 01 Sep 2022
On the uncertainty associated with detecting global and local mean sea level drifts on Sentinel-3A and Sentinel-3B altimetry missions
Rémi Jugier
CORRESPONDING AUTHOR
MAGELLIUM, Ramonville Saint-Agne, 31520, France
Michaël Ablain
MAGELLIUM, Ramonville Saint-Agne, 31520, France
Robin Fraudeau
MAGELLIUM, Ramonville Saint-Agne, 31520, France
Adrien Guerou
CLS Collecte Localisation Satellites, Ramonville Saint-Agne, 31520,
France
Pierre Féménias
ESA/ESRIN, Frascati, Italy
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Related subject area
Approach: Remote Sensing | Properties and processes: Sea level | Depth range: All Depths | Geographical range: All Geographic Regions | Challenges: Oceans and climate
Current observed global mean sea level rise and acceleration estimated from satellite altimetry and the associated measurement uncertainty
Revisiting the global mean ocean mass budget over 2005–2020
Adrien Guérou, Benoit Meyssignac, Pierre Prandi, Michaël Ablain, Aurélien Ribes, and François Bignalet-Cazalet
Ocean Sci., 19, 431–451, https://doi.org/10.5194/os-19-431-2023, https://doi.org/10.5194/os-19-431-2023, 2023
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Based on the latest satellite observations published by the French space agency CNES, we present the current state of the sea level at the scale of the planet and assess its rise and acceleration over the past 29 years. To support scientific research we provide updated estimations of our confidence in our estimations and highlight key technological and scientific fields. Making progress on that will help to better characterize the sea level in the future.
Anne Barnoud, Julia Pfeffer, Anny Cazenave, Robin Fraudeau, Victor Rousseau, and Michaël Ablain
Ocean Sci., 19, 321–334, https://doi.org/10.5194/os-19-321-2023, https://doi.org/10.5194/os-19-321-2023, 2023
Short summary
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The increase in ocean mass due to land ice melting is responsible for about two-thirds of the global mean sea level rise. The ocean mass variations are monitored by GRACE and GRACE Follow-On gravimetry satellites that faced instrumental issues over the last few years. In this work, we assess the robustness of these data by comparing the ocean mass gravimetry estimates to independent observations (other satellite observations, oceanographic measurements and land ice and water models).
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Short summary
To ensure that the sea level is measured as accurately as possible by satellite altimeters, we must monitor possible sea level drifts caused by those instruments through comparison with other satellite altimeters or tide gauges. In this paper, we describe a method and estimate the associated uncertainties for detecting altimeter drifts over short time periods (from 2 to 10 years) through cross-comparison with other satellite altimeters and apply it to the recent Sentinel-3 A/B altimeters.
To ensure that the sea level is measured as accurately as possible by satellite altimeters, we...
