Photosynthetically Active Radiation (PAR) is the measure of the density of photons per unit area that are in the spectral range of light (400-700 nanometers) that primary producers use for photosynthesis.

Instrument Classes

The following instrument classes include this data product:

Typical Units

µmol photons m-2 s-1

Sampling Regime

Water Column

Data Product Specification

Not Available