Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 11, issue 3
Articles | Volume 11, issue 3
https://doi.org/10.5194/essd-11-1189-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-11-1189-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 11, issue 3
Data description paper
 | 
07 Aug 2019
Data description paper |  | 07 Aug 2019

Uncertainty in satellite estimates of global mean sea-level changes, trend and acceleration

Michaël Ablain, Benoît Meyssignac, Lionel Zawadzki, Rémi Jugier, Aurélien Ribes, Giorgio Spada, Jerôme Benveniste, Anny Cazenave, and Nicolas Picot

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Short summary
A description of the uncertainties in the Global Mean Sea Level (GMSL) record has been performed; 25 years of satellite altimetry data were used to estimate the error variance–covariance matrix for the GMSL record to derive its confidence envelope. Then a least square approach was used to estimate the GMSL trend and acceleration uncertainties over any time periods. A GMSL trend of 3.35 ± 0.4 mm/yr and a GMSL acceleration of 0.12 ± 0.07 mm/yr² have been found within a 90 % confidence level.
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