Jun 9, 2026
NASA’s Physical Oceanography Distributed Active Archive Center (PO.DAAC) is pleased to announce the public release of the Integrated Multi-Mission Ocean Altimeter Sea Surface Height (SSH) Version 6.1 dataset, which is produced by NASA Sea Surface Height (NASA-SSH) project contributors at Goddard Space Flight Center and Jet Propulsion Laboratory. More information regarding NASA-SSH is available from the NASA-SSH project page.
The dataset in this release provides a coherent and consistent SSH time series from multi-mission altimeter data, including TOPEX/Poseidon, Jason-1, OSTM/Jason-2, Jason-3, and Sentinel-6 missions covering the period from September 1992 to January 2026.
The time series is extended to include new observations periodically.
Compared to previous versions (v5.2, v6.0), this new version contains updated Sentinel-6A data, and other revised auxiliary data, as described in the User Guide. It is also the first version of this product to rely on JPL-produced orbits based on data from GNSS receivers, whenever possible throughout the entire time series. Files are distributed in netCDF4 format.
The dataset is described and discoverable via Earthdata Search:
Comments/Questions? Please contact podaac@podaac.jpl.nasa.gov or visit the Earthdata Forum.
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User Services Office
NASA JPL Physical Oceanography DAAC
E-mail: podaac@podaac.jpl.nasa.gov
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