Comparison of total column ozone measurements obtained from a global UV spectroradiometer with those from a Dobson spectrophotometer at Melbourne Australia

Don J. Anderson

doi:10.1117/12.502641

4 November 2003 Comparison of total column ozone measurements obtained from a global UV spectroradiometer with those from a Dobson spectrophotometer at Melbourne Australia

Don J. Anderson

Author Affiliations +

Proceedings Volume 5156, Ultraviolet Ground- and Space-based Measurements, Models, and Effects III; (2003) https://doi.org/10.1117/12.502641
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

During the period August 2001 to February 2003 global solar UV measurements were performed with a high resolution spectroradiometer at Melbourne Australia (37.7°S, 144.9°E). From these measurements total column ozone amounts were derived and compared with those of a nearby Dobson spectrophotometer. The effects of cloud cover, solar zenith angle and the choice of various parameters used for the total ozone retrieval were examined. The comparison showed that mean difference between the two instruments was either -0.3% or +1.8% depending on the choice of parameters used in the total ozone retrieval. The standard deviation of the differences was 2.7% in both cases. It was observed that the presence of smoke haze increased the difference between the instruments and some preliminary work on reducing this effect is presented.

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Don J. Anderson "Comparison of total column ozone measurements obtained from a global UV spectroradiometer with those from a Dobson spectrophotometer at Melbourne Australia", Proc. SPIE 5156, Ultraviolet Ground- and Space-based Measurements, Models, and Effects III, (4 November 2003); https://doi.org/10.1117/12.502641

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KEYWORDS

Ozone

Spectrophotometry

Absorption

Clouds

Ultraviolet radiation

Aerosols

Sun

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