Articles | Volume 18, issue 5
Research article
01 Sep 2022
Research article |  | 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, Michaël Ablain, Robin Fraudeau, Adrien Guerou, and Pierre Féménias

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Cited articles

Ablain, M.: Estimating of Any Altimeter Mean Sea Level (MSL) drifts between 1993 and 2017 by Comparison with Tide-Gauges Measurements, 25 years of progress in altimetry radar symposium, (last access: 10 June 2022), 2018. 
Ablain, M., Meyssignac, B., Zawadzki, L., Jugier, R., Ribes, A., Spada, G., Benveniste, J., Cazenave, A., and Picot, N.: Uncertainty in satellite estimates of global mean sea-level changes, trend and acceleration, Earth Syst. Sci. Data, 11, 1189–1202,, 2019. 
Ablain, M., Jugier, R., Marti, F., Dibarboure, G., Couhert, A., Meyssignac, B., and Cazenave, A.: Benefit of a second calibration phase to estimate the relative global and regional mean sea level drifts between Jason-3 and Sentinel-6a, Earth and Space Science Open Archive [preprint],, 2020. 
Aublanc, J.: Impact of the range walk processing in the Sentinel-3A sea level trend, OSTST, (last access: 10 June 2022), 2020. 
AVISO: Along-track Sea Level Anomalies Level-2+ (L2P),, last access: 27 July 2022 (login required). 
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.