Weighted Irradiance Data
In Situ Langley Calibration
In situ calibrated UV/visible irradiance is the spectral irradiance in Watts per (square meter per nanometer) measured by a UV-MFRSR/vis-MFRSR using Langley derived calibration factors that have been calculated using clear sky data at the deployment station. The Langley method extrapolates the measured direct beam to zero air mass where the incident irradiance is equal to the extra-terrestrial value. To insure quality data, the In Situ calibrated data is available through the previous month.

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, AK02 is from Sat Aug 26 00:00:00 GMT+00:00 2000 to Sun Apr 30 15:35:10 GMT+00:00 2017

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
  • Vermont,Burlington
  • Washington,Pullman
  • Wisconsin,Dancy
  • Long Term Research Sites
  • Colorado,Longmont,Perm.Reference,CO97
  • Colorado,Longmont,Table Mountain,CO99
  • Colorado,Nunn,Pawnee
  • Hawaii,Waimea,Mauna Loa,HI00
  • Hawaii,Waimea,Mauna Loa,HI03
  • Hawaii,Waimea,Mauna Loa,HI04,ref
  • Hawaii,Waimea,Mauna Loa,HI05
  • Hawaii,Waimea,Mauna Loa,HI06
  • Hawaii,Waimea,Mauna Loa,HI07
  • Hawaii,Waimea,Mauna Loa,HI08
  • Hawaii,Waimea,Mauna Loa,HI09
  • Hawaii,Waimea,Mauna Loa,HI11
  • Hawaii,Waimea,Forrest Mims,HI21
  • Hawaii,Waimea,Forrest Mims,HI22
  • Hawaii,Waimea,Forrest Mims,HI31
  • 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
  • Louisiana,Baton Rouge,SU-Ag
  • Maryland,Greenbelt,NASA,MD21
  • Maryland,Greenbelt,NASA,MD22
  • Maryland,Greenbelt,NASA,MD23
  • Texas,Seguin,vis LED unit
  • Short Term Experimental Research Sites
  • Arizona,Tucson,UV-MFRSR only
  • Bolivia,Santa Cruz,NASA MD22 in Bolivia
  • California,Mt. Wilson,SCOS-97
  • California,Mt. Wilson,SCOS-97
  • California,Pasadena,NASA
  • California,Riverside,SCOS-97
  • China,Xianghe,NASA
  • Colorado,Fort Collins,CO22
  • Colorado,Fort Collins,CO23
  • Colorado,Fort Collins,CO24
  • Colorado,Longmont,Table Mountain,CO94
  • Colorado,Longmont,Table Mountain,CO95
  • Colorado,Nunn,CO03
  • Colorado,Nunn,CO04
  • Colorado,Nunn,CO05
  • Colorado,Nunn,CO06
  • Colorado,Nunn,CO07
  • Colorado,Nunn,CO09
  • Colorado,Nunn,CO21
  • Colorado,Nunn,CO31
  • Colorado,Nunn,CO61
  • Colorado,Nunn,CO71
  • Colorado,Nunn,CO81
  • Florida,Gainesville,Portable,FL99
  • Greece,Thessaloniki,NASA
  • Indiana,West Lafayette,Portable,IN99
  • Maine,Howland,data by spcl request
  • Mexico,Mexico City,UTTEC T1,MX01
  • Mexico,Mexico City,2003,MX02
  • Mexico,Mexico City,UNAM CASA,MX03
  • Mexico,Mexico City,IMP T0,MX04
  • Mexico,Mexico City,UTTEC T1,MX05
  • Mississippi,Brooksville,vis-MFRSR only
  • Mississippi,Newton,vis-MFRSR only
  • Mississippi,Stoneville,vis-MFRSR only
  • New York,Geneva,Portable,NY99
  • Norway,Oesteraas,NO02
  • Norway,Oesteraas,NO03
  • Texas,Houston,LaPorte Airport
  • Texas,Houston,LaPorte Airport
  • UAE,Dhabi,NASA