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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 30 — Oct. 20, 2002
  • pp: 6341–6350

Calibration and uncertainty estimation of erythemal radiometers in the Argentine Ultraviolet Monitoring Network

Alexander Cede, Eduardo Luccini, Liliana Nuñez, Rubén D. Piacentini, and Mario Blumthaler  »View Author Affiliations


Applied Optics, Vol. 41, Issue 30, pp. 6341-6350 (2002)
http://dx.doi.org/10.1364/AO.41.006341


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Abstract

The erythemal radiometers of the Ultraviolet Monitoring Network of the Argentine Servicio Meteorológico Nacional were calibrated in an extensive in situ campaign from October 1998 to April 1999 with Austrian reference instruments. Methods to correct the influence of the location’s horizon and long-term detector changes are applied. The different terms that contribute to the measurement uncertainty are analyzed. The expanded uncertainty is estimated to be ±10% at 70° solar zenith angle (SZA) and ±6% for a SZA of <50°. We observed significant changes for some detectors over hours and days, reaching a maximum diurnal drift of ±5% at a SZA of 70° and a maximum weekly variation of ±4%.

© 2002 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.5630) Instrumentation, measurement, and metrology : Radiometry

History
Original Manuscript: January 2, 2002
Revised Manuscript: May 28, 2002
Published: October 20, 2002

Citation
Alexander Cede, Eduardo Luccini, Liliana Nuñez, Rubén D. Piacentini, and Mario Blumthaler, "Calibration and uncertainty estimation of erythemal radiometers in the Argentine Ultraviolet Monitoring Network," Appl. Opt. 41, 6341-6350 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-30-6341

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