Types of dataset: Ssalto/Duacs multimission altimeter products
Contents: along-track sea surface heights above geoid; dynamic topography is the sum of sea level anomaly (SLA) and mean dynamic topography (MDT, Rio05 here)
Use: study of the general circulation (ocean gyres ...)
Description: mono altimeter satellite product homogeneous with other satellites, available in near-real time and in delayed time.
Geographic coverage: global
A specific regional product with an improved quality is available in local areas (more information).

Format: NetCDF

Tools:

• User Handook: Ssalto/Duacs User Handbook : (M)SLA and (M)ADT Near-Real Time and Delayed Time Products
• Data reading software

Description: this delayed time product is available in two versions:

• "Ref" (Reference) series: homogeneous datasets based on two satellites (Topex/Poseidon, Jason-1 + ERS, Envisat) with the same groundtrack. Sampling is stable in time.
• "Upd" (Updated) series: up-to-date datasets with up to four satellites at a given time (adding GFO and/or Topex/Poseidon on its new orbit). Sampling and Long Wavelength Errors determination are improved, but quality of the series is not homogeneous.

Copyright : 2005-2008 CLS

DT-ADT "Ref"

DT-ADT "Upd"

Description : this product is available within 3 hours to 12 hours in real time (RT), and 3 days in near-real time (NRT).

Conditions of access : cf Access to Ssalto/Duacs data
Copyright : 2004 - 2008 CLS-Cnes