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Applied Optics

Applied Optics


  • Vol. 37, Iss. 33 — Nov. 20, 1998
  • pp: 7912–7919

Global ultraviolet spectra derived directly from observations with multichannel radiometers

Humberto A. Fuenzalida  »View Author Affiliations

Applied Optics, Vol. 37, Issue 33, pp. 7912-7919 (1998)

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Some general features of multichannel filter radiometers operating in the UV region of the solar spectrum are reviewed with emphasis on calibration problems that are due to incomplete knowledge of responsivity in the UV-B region. An alternative calibration procedure that is able to generate a full UV spectrum obtained by a constrained inversion method is presented. Accuracy of such spectra is assessed with simulated and with real data. A comparison between customary calibration and an alternative procedure is made in terms of monochromatic UV-B irradiance and CIE dose rate (CIE is the Commission Internationale de l’Eclairage) and indicates that irradiances are estimated within 8% accuracy with solar zenith angles as great as 60° and that dose rates are within 6% for any solar zenith angle. The advantage of having an additional channel in the UV-B region is considered.

© 1998 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(000.4430) General : Numerical approximation and analysis
(260.7190) Physical optics : Ultraviolet
(300.6540) Spectroscopy : Spectroscopy, ultraviolet

Original Manuscript: April 1, 1998
Revised Manuscript: July 31, 1998
Published: November 20, 1998

Humberto A. Fuenzalida, "Global ultraviolet spectra derived directly from observations with multichannel radiometers," Appl. Opt. 37, 7912-7919 (1998)

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