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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 3 — Jan. 20, 2004
  • pp: 651–659

Determination of the Solar Calibration Constant for a Sun-Sky Radiometer: Proposal of an In-Situ Procedure

Monica Campanelli, Teruyuki Nakajima, and Bruno Olivieri  »View Author Affiliations


Applied Optics, Vol. 43, Issue 3, pp. 651-659 (2004)
http://dx.doi.org/10.1364/AO.43.000651


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Abstract

A new procedure is presented for determining in situ the solar calibration constant, i.e., the Sun-sky radiometer counts for a direct normal solar flux extrapolated to the top of the atmosphere. The method makes use of a modified version of the Langley plot based on the use of an inversion code of column-integrated aerosol size distribution, and it is ordinarily applied to calibrate Prede Sun-sky radiometers. To analyze how such an in situ method can work accurately, the technique has been applied to a five-month dataset obtained from measurements taken in Rome, Italy, by a Prede Sun-sky radiometer from 22 April to 5 November 2001. The precision of the in situ method has been estimated to within 1–2.5%, depending on the wavelength.

© 2004 Optical Society of America

OCIS Codes
(010.1110) Atmospheric and oceanic optics : Aerosols
(010.1290) Atmospheric and oceanic optics : Atmospheric optics

Citation
Monica Campanelli, Teruyuki Nakajima, and Bruno Olivieri, "Determination of the Solar Calibration Constant for a Sun-Sky Radiometer: Proposal of an In-Situ Procedure," Appl. Opt. 43, 651-659 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-3-651

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