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The possibility of using an optical gas filter method for remote sounding of the total atmospheric column of SO2

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We consider the possibility of using a passive optical gas filter method for remote sounding of the total atmospheric column of sulfur dioxide (SO2) using the absorption of solar radiation by atmospheric SO2 in the ultraviolet (UV) region. Numerical calculations were made to investigate the sensitivity of the gas filter instrument to the total column amount of SO2 in the atmosphere. The accuracy of a measurement may be affected by the uncertainty in the content of interfering species. In the UV spectral range, the species that significantly interferes with SO2 is ozone (O3). A technique to reduce the effect of interfering absorbers was developed. We present the results of an analysis that shows the possibility of reducing the effect on SO2 column measurements caused by change in ozone in the atmospheric column.

Document Type: Research Article


Affiliations: Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus

Publication date: June 10, 2011

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