Total ozone observation by sun photometry at Arosa, Switzerland

Johannes Staehelin; Herbert Schill; Bruno Hoegger; Pierre Viatte; Gilbert Levrat; Adrian Gamma

doi:10.1117/12.204689

1 July 1995 Total ozone observation by sun photometry at Arosa, Switzerland

Johannes Staehelin, Herbert Schill, Bruno Hoegger, Pierre Viatte, Gilbert Levrat, Adrian Gamma

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Optical Engineering, Vol. 34, Issue 7, (July 1995). https://doi.org/10.1117/12.204689

Abstract

The method used for ground-based total ozone observations and the design of two instruments used to monitor atmospheric total ozone at Arosa (Dobson spectrophotometer and Brewer spectrometer) are briefly described. Two different procedures of the calibration of the Dobson spectrometer, both based on the Langley plot method, are presented. Data quality problems that occurred in recent years in the measurements of one Dobson instrument at Arosa are discussed, and two different methods to reassess total ozone observations are compared. Two partially automated Dobson spectrophotometers and two completely automated Brewer spectrometers are currently in operation at Arosa. Careful comparison of the results of the measurements of the different instruments yields valuable information on possible small long-term drifts of the instruments involved in the operational measurements.

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Johannes Staehelin, Herbert Schill, Bruno Hoegger, Pierre Viatte, Gilbert Levrat, and Adrian Gamma "Total ozone observation by sun photometry at Arosa, Switzerland," Optical Engineering 34(7), (1 July 1995). https://doi.org/10.1117/12.204689

Published: 1 July 1995

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