Water-leaving reflectance is calculated for all bands except those dedicated to measurement of atmospheric gas (Oa13, Oa14, Oa15, Oa19, and Oa20) absorption. This means marine reflectance shall be provided for a total of 16 bands and each band will be included in the Oa#_reflectance.nc file (where # represents the band number).
The following table provides the main characteristics of water-leaving reflectance including coverage, parameter ID, time latency, sampling and bands used in the associated product. The ancillary and auxiliary data provides the variables used during processing and are provided in Auxiliary Data Files (ADFs).
|PRODUCT NAME||Normalised Water-Leaving Reflectance|
|PARAMETER ID||Rxxx, where xxx represents the band wavelength in nm|
|DESCRIPTION||Surface directional reflectance, corrected for atmosphere and sun specular reflection, at all OLCI channels except those dedicated to atmosphere absorption measurements, and associated error estimates.|
|RANGE||0-0.2, exceptionally higher|
|SAMPLING||Spatial: approximately 300 m x 300 m (FR) and 1.2 km x 1.2 km (RR); spectral: variable with 16 channels.|
|APPENDED DATA||Error estimate (2-byte integer)|
|FREQUENCY||1 product per orbit|
|SIZE OF PRODUCT||Approx. 17.4 GB (FR), 1.1 GB (RR)|
|INPUT BANDS||All OLCI bands except Oa13, Oa14, Oa15, Oa19, and Oa20|
|ANCILLARY AND AUXILIARY DATA||Aerosol models, aerosol LUT, atmospheric diffuse transmittances LUT, RT LUT (solar zenith angle, viewing zenith angle, wavelength, aerosol optical thickness, gaseous absorption, chlorophyll concentration).|