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You are here: GES DISC Home Hydrology Data Holdings NLDAS Parameters PHOTOSYNTHETICALLY ACTIVE RADIATION

PHOTOSYNTHETICALLY ACTIVE RADIATION

 

Other Names

None

Definition

Photosynthetically Active Radiation (PAR) measures irradiance or the amount of sunlight or ambient light that diffuses through water compared to surface light. PAR focuses on the dynamics of the photic zone, typically 1-5 meters below the surface, and leads to an understanding of photosynthesis, toxic algae blooms, and eutrophication (nutrient loading).

Applications

  1. Environmental issues
  2. Agriculture issues
  3. Water cycle
  4. Energy cycle
  5. Weather forecast
  6. Global climate change

GES DISC Datasets

To access products that have specific parameter click on the corresponding 'data access' links in the table below.

Parameter Units Platform /Instrument Data
Begin Date End Date Access Doc
Photosynthetically Active Radiation W/m^2 NLDAS
1979 present ftp Y

Other sources for data

  1. NLDAS/GLDAS
  2. GISTEMP
  3. NOAA/NCDC

 

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Last updated: Oct 24, 2011 03:56 PM ET
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