Articles | Volume 15, issue 5
Ocean Sci., 15, 1207–1224, 2019
https://doi.org/10.5194/os-15-1207-2019

Special issue: The Copernicus Marine Environment Monitoring Service (CMEMS):...

Ocean Sci., 15, 1207–1224, 2019
https://doi.org/10.5194/os-15-1207-2019

Research article 12 Sep 2019

Research article | 12 Sep 2019

DUACS DT2018: 25 years of reprocessed sea level altimetry products

Guillaume Taburet et al.

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Depth range: Surface | Approach: Operational Oceanography | Geographical range: All Geographic Regions | Phenomena: Sea Level
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Cited articles

Ablain, M., Legeais, J. F., Prandi, P., Fenoglio-Marc L., Marcos M., Benveniste, J., and Cazenave, A.: Satellite Altimetry-Based Sea Level at Global and Regional Scales, Surv. Geophys., 38, 9–33, https://doi.org/10.1007/s10712-016-9389-8, 2017. 
Ablain, M., Meyssignac, B., Zawadzki, L., Jugier, R., Ribes, A., Cazenave, A., and Picot, N.: Uncertainty in Satellite estimate of Global Mean Sea Level changes, trend and acceleration, Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2019-10, in review, 2019. 
AVISO: Annual report (2017) of Mean Sea Level activities, Edn. 1.0, available at: https://www.aviso.altimetry.fr/fileadmin/documents/calval/validation_report/SALP-RP-MA-EA-23189-CLS_AnnualReport_2017_MSL.pdf (last access: 4 October 2018), 2017a. 
AVISO: Annual report (2017) of the assessment of Orbit Quality through the Sea Surface Height calculation, available at: https://www.aviso.altimetry.fr/fileadmin/documents/calval/validation_report/SALP-RP-MA-EA-CLS_1_0_YearlyReportOrbito_2017.pdf (last access: 4 October 2018), 2017b. 
AVISO: Cal/Val and cross calibration annual reports, available at: https://www.aviso.altimetry.fr/en/data/calval/systematic-calval.html (last access: 12 December 2018), 2017c. 
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Short summary
This paper deals with sea level altimetery products. These geophysical data are distributed as along-track and gridded data through Copernicus programs CMEMS and C3S. We present in detail a new reprocessing of the data (DT2018) from 1993 to 2017. The main changes and their impacts since the last version (DT2014) are carefully discussed. This comparison is made using an independent dataset. DT2018 sea level products are improved at the global and regional scale, especially in coastal areas.