From the three processing modes of the OLCI Level-1 processor (Earth Observation (EO), Radiometric Calibration (RC) and Spectral Calibration (SC)) and the two available Resolutions in EO (Full and Reduced Resolution), four different Level-1B products can be obtained:
NOTE: OL_1_RAC and OL_1_SPC are internal PDGS products, and not disseminated to SENTINEL-3 users.
The Level-1B products in EO processing mode contain calibrated, ortho-geolocated and spatially re-sampled Top Of Atmosphere (TOA) radiances for the 21 OLCI spectral bands. The associated error estimates are also contained in the measurement data files. In Full Resolution products (i.e. at native instrument spatial resolution), these parameters are provided for each re-gridded pixel on the product image and for each removed pixel. In Reduced Resolution products (i.e. at a resolution four times coarser), the parameters are only provided on the product grid.
In addition to measurement datasets, annotation datasets provide: