The European Space Agency Ocean Colour Climate Change Initiative (Ocean Colour CCI) project aims to produce long-term multi-sensor time-series of satellite ocean-colour data with a particular focus for use in climate studies.

Data products being produced include: phytoplankton chlorophyll-a concentration; remote-sensing reflectance at six wavelengths; total absorption and backscattering coefficients; phytoplankton absorption coefficient and absorption coefficients for dissolved and detrital material; and the diffuse attenuation coefficient for downwelling irradiance for light of wavelength 490 nm. Information on uncertainties is also provided.