AVISO stands for "Archiving, Validation and Interpretation of Satellite Oceanographic data". In this website, we offer data sets of the mean sea surface height (MADT) and its anomaly (msla) acquired from the Ssalto/Duacs project. Aviso distributes satellite altimetry data from Topex/Poseidon, Jason-1 & -2, ERS-1 & -2, Envisat, Cryosat-2, and SARAL/Altika. The data set offered here now has been re-processed completely recently and published on April 15 2014.
The most relevant changes are:
- a new reference period for MSLA (1993-2012 instead of 1993-1997)
- a change in the SLA bias; all SLA products have mean SLA null for 1993
- a different standard grid and standard data format
- a new processing allowing for less smoothing at low latitudes and a denser data coverage
Details about these updates as well as additional information is found in the new documentation of the data set.
We offer the data set "two_sat_merged" which is basically based on data from two satellites throughout the entire period. The data set has daily temporal resolution for msla, madt and the surface current components u & v. Data are also available as monthly means and as monthly and seasonal climatologies over the entire period.
Last update of data set: June 8, 2018