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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 27 — Sep. 20, 1998
  • pp: 6339–6344

Correcting global solar ultraviolet spectra recorded by a Brewer spectroradiometer for its angular response error

Alkiviadis F. Bais, Stelios Kazadzis, Dimitrios Balis, Christos S. Zerefos, and Mario Blumthaler  »View Author Affiliations


Applied Optics, Vol. 37, Issue 27, pp. 6339-6344 (1998)
http://dx.doi.org/10.1364/AO.37.006339


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Abstract

We present a methodology for correcting the global UV spectral measurements of a Brewer MKIII spectroradiometer for the error introduced by the deviation of the angular response of the instrument from the ideal response. This methodology is applicable also to other Brewer spectroradiometers that are currently in operation. The various stages of the methodology are described in detail, together with the uncertainties involved in each stage. Finally global spectral UV measurements with and without the application of the correction are compared with collocated measurements of another spectroradiometer and with model calculations, demonstrating the efficiency of the method. Depending on wavelength and on the aerosol loading, the cosine correction factors range from 2% to 7%. The uncertainties involved in the calculation of these correction factors were found to be relatively small, ranging from ∼0.2% to ∼2%.

© 1998 Optical Society of America

OCIS Codes
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(260.7190) Physical optics : Ultraviolet
(290.0290) Scattering : Scattering

History
Original Manuscript: December 22, 1997
Revised Manuscript: May 5, 1998
Published: September 20, 1998

Citation
Alkiviadis F. Bais, Stelios Kazadzis, Dimitrios Balis, Christos S. Zerefos, and Mario Blumthaler, "Correcting global solar ultraviolet spectra recorded by a Brewer spectroradiometer for its angular response error," Appl. Opt. 37, 6339-6344 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-27-6339

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