Sentinel-3
Ocean & Land Monitoring
- SLSTR (Sea and Land Surface Temperature Radiometer)
- OLCI (Ocean and Land Colour Instrument)
- SRAL (SAR Altimeter)
- DORIS (Doppler Orbitography and Radiopositioning Integrated by Satellite)
- MWR (Microwave Radiometer).
All files of a product are encapsulated into a SAFE container. Level-1 and 2 data are provided in free-standing netCDF 4 product files.

Sentinel-3 carries a dual-frequency SAR altimeter called the SAR Radar ALtimeter (SRAL) instrument. It produces altimetry and calibration products.
Sentinel-3 is equipped with a sophisticated push-broom imaging spectrometer instrument known as the Ocean and Land Colour Instrument (OLCI). This instrument plays a pivotal role in the satellite's mission by capturing valuable data about Earth's oceans and land areas.
Sentinel-3 carries a dual view (near-nadir and backward views) conical imaging radiometer called the Sea and Land Surface Temperature Radiometer (SLSTR) instrument.
Some Sentinel-3 instruments can be combined to build new products, called synergy products. SYN Level-1 processing aims to retrieve the OLCI and SLSTR radiances and brightness temperature in their acquisition geometry.