'''Short description:'''For the '''Baltic Sea''' Ocean '''Satellite Observations''', the Italian National Research Council (CNR – Rome, Italy), is providing multi-years '''Bio-Geo_Chemical (BGC)''' regional datasets:* '''''plankton''''' with the phytoplankton chlorophyll concentration (CHL) evaluated via region-specific neural network (Brando et al. 2021)'''Upstreams''': SeaWiFS, MODIS, MERIS, VIIRS, OLCI-S3A (ESA OC-CCIv5) for the '''""multi""''' products, and OLCI-S3A & S3B for the '''""olci""''' products'''Temporal resolutions''': monthly'''Spatial resolution''': 1 km for '''""multi""''' and 300 meters for '''""olci""'''To find this product in the catalogue, use the search keyword '''""OCEANCOLOUR_BAL_BGC_L4_MY""'''.'''DOI (product) :''' https://doi.org/10.48670/moi-00308