OLCI Level 1B Reduced Resolution (version BC004) - Sentinel-3 - Reprocessed

OLCI (Ocean and Land Colour Instrument) Reduced Resolution: 1200m at nadir. Level 1 products are calibrated Top Of Atmosphere radiance values at OLCI 21 spectral bands. Radiances are computed from the instrument digital counts by applying geo-referencing, spectral calibration adjusted for wavelength evolution with time, radiometric processing (non-linearity correction, smear correction, dark offset correction, absolute calibration adjusted for radiometric evolution with time), and the correction for straylight effects in OLCI cameras’ spectrometer and ground imager. Per-pixel uncertainties are included in the reprocessed timeseries. Additionally, spatial resampling of OLCI pixels to the 'ideal' instrument grid, initial pixel classification, and annotation at tie points with auxiliary meteorological data and acquisition geometry are provided. The radiance parameters are accompanied by error estimate parameters. The Solar Irradiance Reference Spectrum is based on TSIS-1 (Coddington et al, 2021) and was updated for this reprocessing from Thuillier et al, 2003.
Sentinel-3 is part of a series of Sentinel satellites, under the umbrella of the EU Copernicus programme.

This collection contains reprocessed data from baseline collection 004. Operational data can be found in the corresponding collection.