Particulate matter (particulate backscatter coefficient at 443nm, bbp in m^-1 at 4km resolution): The backscatter coefficient bbp represents the fraction of incident light that is scattered backward from its original path by particulate material in the water. The backscattering coefficient gives a good indication of the concentration of suspended organic and inorganic particles (e.g. sediments) in the water.
Absorption Coefficient of colored detrital matter at 443nm (adg in m-1): The absorption coefficient adg represents the fraction of incident light absorbed by both detrital particles and colored dissolved organic matter (CDOM). Dissolved organic matter is an important component of the oceanic carbon cycle. It is also used as proxy to assess the impact of terrigenous inputs in coastal waters.
Monthly mean sea surface Chlorophyll-a concentration (in mg.m^-3 (log10) at 4km resolution - Satellite remote sensing Ocean color data): Chlorophyll is a photosynthetic pigment commonly present in all phytoplankton species. It is used as a proxy for phytoplankton biomass. Chlorophyll concentration is a standard product from satellite-based optical sensors, usually retrieved from empirical algorithms using reflectance ratios at two or more wavebands.
Water Transparency (Diffuse attenuation coefficient at 490nm, Kd490 in m^-1 at 4km resolution): The diffuse attenuation coefficient Kd490 measures the light penetration in the water column at the blue-green wavelengths (ca. 490 nm). It represents a good indicator of water transparency resulting from the combined action of absorption and backscattering by the water constituents, and the structure of the surrounding light field.
Primary Productivity - Mean of the binned pixels