Weighted Irradiance Data Download
Data Requests
Erythemal Radiation
Erythemal Radiation is the irradiance in Watts per square meter measured over the 300 through 400 nanometer range and weighted with the Mc Kinlay and Diffey, (1987) action spectrum.

Graphs of the data are available for a time selection of two months or less. Also provided, is a feature to export the data to a file on your local computer in several different formats(excel, csv, xml). Keep in mind a year's worth of data is about 25 megabytes, and will take almost 2 minutes to generate.

Valid date range for location Alaska, Fairbanks, AK01 is from Sat Aug 26 00:00:00 GMT+00:00 2000 to Sun Jan 25 00:00:58 GMT+00:00 2015

Location and Time User Inputs

Time Duration