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MOD 22 - Photosynthetically Available Radiation (PAR)
Description:
This Level 2 and 3 product consists of four related
parameters which describe the irradiance at the ocean
surface. The first is Downwelling Solar Irradiance,
which is the incident irradiance just above the sea
surface in each of the visible MODIS ocean bands
(8, 9, 10, 11, 12, 13, 14). The second is Instantaneous
Photosynthetically Active Radiation (IPAR), which
is the total downwelling flux of photons just below
the sea surface at the instant MODIS views the pixel,
integrated over the wavelength range of 400-to-700
nm. The third is PAR, which is the irradiance averaged
over an entire day. Since measurements are only
available at the time MODIS views the pixel, this
parameter is estimated from IPAR by the algorithm.
Information:
Affiliated Team Member: K. Carder, Affiliated Discipline: Ocean DAAC Description: LAADS Non-Technical Description: No EOS Data Description (PDF): Yes Product Quality History: Yes
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