In this section you can find out more details about the Copernicus Sentinel-3 Altimetry products.
The marine and land product services for Sentinel-3A and -3B are split between EUMETSAT and ESA, respectively. Users mainly interested in altimeter data over ocean areas will retrieve the data from EUMETSAT; users with a focus on land areas are directed to ESA's data archive. To facilitate the use at the boundary between both realms, an overlap is included.
Altimetry Marine/Land Mask
The mask used by the respective ground segments differentiates between marine and land products as follows:
- Marine: all oceans and seas, and the first 10 km in-land
- Land: all land and lakes, and coastal areas up to 300 km offshore
Since December 2017, with Product Baseline 2.24, the L2 SRAL marine product processing contains an updated marine/land mask which added the Great Lakes, Lake Victoria and Caspian Sea to the area covered by the marine products. All reprocessed data have this marine/land mask applied.
The areas covered by the marine and land products and their overlap is illustrated in the image below, also available as KMZ file.