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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 19 — Jul. 1, 2001
  • pp: 3149–3155

Direct-Sun column ozone retrieval by the ultraviolet multifilter rotating shadow-band radiometer and comparison with those from Brewer and Dobson spectrophotometers

Wei Gao, James Slusser, James Gibson, Gwendolyn Scott, David Bigelow, James Kerr, and Bruce McArthur  »View Author Affiliations


Applied Optics, Vol. 40, Issue 19, pp. 3149-3155 (2001)
http://dx.doi.org/10.1364/AO.40.003149


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Abstract

A methodology for direct-Sun ozone retrieval using the ultraviolet multifilter rotating shadow-band radiometer (UV-MFRSR) is presented. Total vertical column ozone was retrieved in three stations: Mauna Loa, Hawaii, in the U.S., and Regina, Saskatchewan, and Toronto, Ontario, in Canada, from direct solar irradiances of the UV-MFRSR at 325-, 305-, 332-, and 311-nm channels (2-nm FWHM). The total uncertainty of ozone retrievals in this study is ±2.0%. For Mauna Loa the mean ratios of the UV-MFRSR column ozone retrievals to the collocated Dobson and Brewer were 0.998 and 0.986 between May and September of 1999. The mean ratio of UV-MFRSR retrievals to the collocated Brewer retrievals was 1.012 in Toronto between April and August of 1999, and the mean ratio of retrievals of the UV-MFRSR to the collocated Brewer was 0.988 in Regina between June and September of 1999. Total vertical column ozone values for solar zenith angles of >70° were not considered, because of the signal-to-noise ratio and the angular response of the instruments, and were not used in the evaluation. The advantages of total vertical column ozone retrieval using UV-MFRSR include relatively low cost, computer-controlled operation, automated calibration stability checks, and minimal maintenance. It allows for the real-time measurement of total vertical column ozone. The UV-MFRSR is being used at 28 sites across the United States and 2 sites in Canada that form the U.S. Department of Agriculture UV-B Radiation Monitoring and Research Program. This constitutes a unique network of total vertical column ozone measurement.

© 2001 Optical Society of America

OCIS Codes
(010.4950) Atmospheric and oceanic optics : Ozone
(040.7190) Detectors : Ultraviolet
(060.4250) Fiber optics and optical communications : Networks
(120.2440) Instrumentation, measurement, and metrology : Filters
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(350.5610) Other areas of optics : Radiation

History
Original Manuscript: July 17, 2000
Revised Manuscript: March 9, 2001
Published: July 1, 2001

Citation
Wei Gao, James Slusser, James Gibson, Gwendolyn Scott, David Bigelow, James Kerr, and Bruce McArthur, "Direct-Sun column ozone retrieval by the ultraviolet multifilter rotating shadow-band radiometer and comparison with those from Brewer and Dobson spectrophotometers," Appl. Opt. 40, 3149-3155 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-19-3149

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