Articles | Volume 11, issue 3
Earth Syst. Sci. Data, 11, 1189–1202, 2019
https://doi.org/10.5194/essd-11-1189-2019
Earth Syst. Sci. Data, 11, 1189–1202, 2019
https://doi.org/10.5194/essd-11-1189-2019

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 et al.

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Cited articles

Ablain, M.: The TOPEX-A Drift and Impacts on GMSL Time Series, available at: https://meetings.aviso.altimetry.fr/fileadmin/user_upload/tx_ausyclsseminar/files/Poster_OSTST17_GMSL_Drift_TOPEX-A.pdf, Miami, US (October, 2017), available at: https://meetings.aviso.altimetry.fr/fileadmin/user_upload/tx_ausyclsseminar/files/Poster_OSTST17_GMSL_Drift_TOPEX-A.pdf (last access: 8 November 2018), 2017. 
Ablain, M., Cazenave, A., Valladeau, G., and Guinehut, S.: A new assessment of the error budget of global mean sea level rate estimated by satellite altimetry over 1993–2008, Ocean Sci., 5, 193–201, https://doi.org/10.5194/os-5-193-2009, 2009. 
Ablain, M., Philipps, S., Urvoy, M., Tran, N., and Picot, N.: Detection of Long-Term Instabilities on Altimeter Backscatter Coefficient Thanks to Wind Speed Data Comparisons from Altimeters and Models, Mar. Geod., 35 (Suppl. 1), 258–275, https://doi.org/10.1080/01490419.2012.718675, 2012. 
Ablain, M., Cazenave, A., Larnicol, G., Balmaseda, M., Cipollini, P., Faugère, Y., Fernandes, M. J., Henry, O., Johannessen, J. A., Knudsen, P., Andersen, O., Legeais, J., Meyssignac, B., Picot, N., Roca, M., Rudenko, S., Scharffenberg, M. G., Stammer, D., Timms, G., and Benveniste, J.: Improved sea level record over the satellite altimetry era (1993–2010) from the Climate Change Initiative project, Ocean Sci., 11, 67–82, https://doi.org/10.5194/os-11-67-2015, 2015. 
Ablain, M., Legeais, J. F., Prandi, P., Marcos, M., Fenoglio-Marc, L., Dieng, H. B., Benveniste, J., and Cazenave, A.: Satellite Altimetry-Based Sea Level at Global and Regional Scales, Surv. Geophys., 38, 7–31, https://doi.org/10.1007/s10712-016-9389-8, 2017. 
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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.