Spectral Irradiance Data Download
  • In Situ calibrated
  • MLO calibrated
  • Historical Lamp calibrated
    • Weighted Irradiance Data Download
  • Erythemal
  • PAR
    • Derived Products Download
  • UV Index
  • Synthetic Spectra
  • Instantaneous Optical Depths
  • UV Irradiance Estimator
    • Climatology Products
  • Daily Sums
  • Hourly Sums
  • Spatio-Temporal Distribution of UV-B
  • US Merged Irradiance Statistics
  • Sums US Contour Maps
    • Instrument Characteristics Download
  • Filter Function Corrections
  • Angular Cosine Corrections
  • Langley Voltage Offsets
  • Serial Number Deployment History
  • Site Location Deployment History
    • Anciliary Measurements Download
  • Internal Head Temperature
  • Air Temp, Humidity, Reflective Solar Irradiance
  • Barometer
  • Electronic Offset(Bias)
  • Cosine Corrected Voltages
  • UVA (uncalibrated)
    • Quality Control Information
  • Data Processing Procedures
  • Data Corrections
  • Quality Control Abbreviations
    • Data Requests
  • Data Directory Access
  • Usage Statistics
    • 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.

    Valid date range for location Alaska, Fairbanks, AK01 is from Sat Aug 26 00:00:00 GMT+00:00 2000 to Sun Jul 03 00:00:18 GMT+00:00 2022

    Location and Time User Inputs
    • Climatological Sites
    • Alaska,Fairbanks
    • Arizona,Flagstaff
    • California,Davis
    • California,Holtville
    • Colorado,Lamar
    • Colorado,Nunn,Pawnee
    • Colorado,Steamboat Springs
    • Florida,Homestead
    • Georgia,Griffin
    • Hawaii,Waimea,Mauna Loa
    • Illinois,Bondville
    • Indiana,West Lafayette
    • Louisiana,Baton Rouge
    • Maine,Presque Isle
    • Maryland,Beltsville
    • Maryland,Queenstown
    • Michigan,Pellston
    • Minnesota,Grand Rapids
    • Mississippi,Starkville
    • Montana,Poplar
    • Nebraska,Mead
    • New Mexico,Las Cruces
    • New York,Geneva
    • New Zealand,Alexandra
    • North Carolina,Raleigh
    • North Dakota,Fargo
    • Ohio,Oxford
    • Oklahoma,Billings
    • Ontario,Toronto
    • Saskatchewan,Regina
    • South Korea,Seoul,NASA,KOREA
    • Texas,El Paso
    • Texas,Houston
    • Texas,Panther Junction,Castolon site end 12-2014
    • Texas,Panther Junction,K-Bar site opened 12-2014
    • Texas,Seguin
    • Utah,Logan
    • Utah,Salt Lake City
    • Vermont,Burlington
    • Washington,Pullman
    • Wisconsin,Dancy
    • Long Term Research Sites
    • Canary Islands,Guimar
    • Hawaii,Waimea,Forrest Mims,HI21
    • Hawaii,Waimea,Forrest Mims,HI31
    • Hawaii,Waimea,Mauna Loa,HI11
    • Hawaii,Waimea,vis cal,HI41
    • Hawaii,Waimea,vis cal,HI51
    • Hawaii,Waimea,vis cal,HI61
    • Hawaii,Waimea,vis cal,HI71
    • Hawaii,Waimea,vis cal,HI81
    • Louisiana,Baton Rouge,SU-Ag
    • Maryland,Greenbelt,NASA,MD21
    • Texas,Seguin
    • Utah,Salt Lake City,UT21
    • Short Term Experimental Research Sites
    • Colorado,Fort Collins,UVB Office
    • Colorado,Nunn,CO21
    • Colorado,Nunn,CO31
    • Colorado,Nunn,CO51
    • Colorado,Nunn,CO52
    • Colorado,Nunn,CO61
    • Colorado,Nunn,CO62
    • Colorado,Nunn,CO71
    • Colorado,Nunn,CO81
    • Maine,Howland,data by spcl request
    • Mexico,Mexico City,UTTEC T1,MX01
    • Mississippi,Brooksville,vis_MFRSR only
    • Mississippi,Newton,vis_MFRSR only
    • Mississippi,Stoneville,vis_MFRSR only
    • Texas,Houston,LaPorte Airport