This algorithm returns instantaneous photosynthetically active radiation (iPAR) in Einstein m-2 s-1. The iPAR product represents the total PAR incident on the ocean surface at the time of the satellite observation (the PAR product, in contrast, provides a daily average). This is a companion product to the normalized fluorescence line height algorithm, the combination of which can be used to estimate fluroescence quantum yield (Behrenfeld et al. 2009).
Source: https://oceancolor.gsfc.nasa.gov/resources/atbd/ipar/
MODIS only.
variable: “/geophysical_data/ipar”
