25 October 1999 Depolarization ratio of zenith scattered radiation and measured NO2 slant columns
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The present paper deals with the factors influencing the accuracy of the DOAS and in particularly, with the changing of the depolarization ratio of the zenith scattered radiation and related variations of the retrieved NO2 slant column. Ground based measurements carried out during 1997 and 1998 of the polarization state of the zenith- scattered radiation and the NO2 slant columns have been obtained in 4075 angstrom - 4640 angstrom spectral interval. The depolarization ratio is calculated from the spectra registered with a sheet linear polarizer, inserted into the instrument. A linear regression analysis is applied to retrieve NO2 slant columns. The obtained results are analyzed and discussed.
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Ivan K. Kostadinov, Ivan K. Kostadinov, Giorgio Giovanelli, Giorgio Giovanelli, Fabrizio Ravegnani, Fabrizio Ravegnani, Daniele Bortoli, Daniele Bortoli, Andrea Petritoli, Andrea Petritoli, } "Depolarization ratio of zenith scattered radiation and measured NO2 slant columns", Proc. SPIE 3754, Polarization: Measurement, Analysis, and Remote Sensing II, (25 October 1999); doi: 10.1117/12.366353; https://doi.org/10.1117/12.366353

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