EO:EUM:DAT:0408

OLCI Level 2 Ocean Colour Reduced Resolution - Sentinel-3

OLCI (Ocean and Land Colour Instrument) NRT and NTC ocean colour geophysical products at reduced resolution (1200m at nadir). Level 2 OLCI marine products have changed substantially with the introduction of baseline collection 004 (BC004), as noted below. Level 2 marine products include the following: - water-leaving reflectances (BC003) or remote sensing reflectances (BC004) in 16 bands, Oa??_reflectance (Baseline Atmospheric Correction (BAC:BC003) or Ocean Colour Standard Atmospheric Correction (OC-SAC: BC004) algorithm, bands: 400, 412, 442, 490, 510, 560, 620, 665, 674, 681, 709, 754, 779, 865, 885, 1024 nm); - algal pigment concentration in clear waters, chl_oc4me (BAC: BC003 and maximum band ratio algorithm, log10 scaled) or chlor_a (OC-SAC:BC004 and blended optical water type determined algorithm, log10 scaled); - inherent optical properties (IOPs) and optical water classes, acdm_443/acdom_443/anw_443/aphy_443/bbp_443/bbp_slope/OWC and flags iop_flags (OC-SAC:BC004); - fluorescence peak height, FPH (OC-SAC:BC004); - diffuse attenuation coefficient of downward irradiance at 490 nm, kd_490 (BAC:BC003 and OC-SAC:BC004, log10 scaled); - instantaneous photosynthetically active radiation, PAR (BAC:BC003 and OC-SAC:BC004); - aerosol optical thickness and aerosol Angstrom exponent at 865nm, T865 and A865, respectively (BAC:BC003 and OC-SAC:BC004) - algal pigment concentration in complex waters, chl_nn (neural net algorithm, log10 scaled); - total suspended matter concentration in complex waters, tsm_nn (neural net algorithm, log10 scaled); - cdm absorption at 443 nm in complex waters, ADG443_nn (neural net algorithm, log10 scaled); - integrated water vapour column, iwv (1D-Var algorithm). Sentinel-3 is part of a series of Sentinel satellites, under the umbrella of the EU Copernicus programme.

Satellite: Sentinel-3

Instrument: OLCI

Temporal Extent: 2021-04-10 - now

Orbit Type: LEO

Data Policy: Copernicus

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