Parameter: PAR

Dataset: 
Picoeukaryotic phytoplankton observations
Parameter: 
PAR
Master parameters information
Short Name:
 PAR
Short Description:
 PAR
Official Name:
 PAR
No Data Value:
Description:
 

Photosynthetically Available [Active] Radiation; downwelling irradiance; units vary: off microEinsteins/meter^2/second,  microEinsteins/centimeter^2/second, or micromoles photons/meter/second

 

Dataset-parameters information
Supplied Name: 
PAR
Supplied Units: 
Einstein per square meter per day (Einstein m-2 day-1)
Conversion Necessary: 
no
Conversion Utility: 
No Data Value: 
nd
Description: 
photosynthetically available radiation at depth m. Format: surface PAR (8 d averaged, 0.047 grid cell) using SeaWiFS and MODIS observations. Downward PAR was estimated using the attenuation coefficient K490 from SeaWiFS and MODIS (http://oceancolor.gsfc.nasa.gov) and corrected for chlorophyll a30, and a minimum of 10-3 E/m2d was imposed.