Duacs is the Ssalto multimission altimeter data processing system. It serves in near-real time the main operational oceanography and climate forecasting centers in Europe and worldwide.

Ssalto/Duacs system processes data from all altimeter missions (Jason-1&2, T/P, Envisat, GFO, ERS-1 & 2 and even Geosat) to provide a consistent and homogeneous catalogue of products for varied applications, both for near real time applications and offline studies. Ssalto/Duacs Near-Real Time data are used, in particular, by Godae and its French contribution Mercator Océan. In delayed time, hundreds of teams retrieve historical Duacs datasets.

Latest Duacs maps (Sea Level Anomalies, top, Absolute Dynamic Topography, bottom). Browse through more of them through our "Sea views" interface

The latest version of the Ssalto/Duacs-DT software (v3.0.0) has been installed and activated on the production servers. As we first announced the Aviso data falls under the new data policy ((see below 2010: Duacs Delayed-Time reprocessing). The reprocessed Ssalto/Duacs DT data aren't distributed anonymously as older products were. To get access to these new reprocessed data, you have to fill in the registration form on: http://www.aviso.oceanobs.com/en/data/registration-form/index.html.

These new reprocessed DT series are streched out as fas as the 04^th of November 2009.

See illustrations and more details on the parameters used for the Ssalto/Duacs DT-(v3.0.0) products generation and their impact on the product quality on: Ssalto/Duacs reprocessed DT data set (pdf).