First tropospheric measurements of the vertical profle of nitrogen dioxide concentration in Minsk
Abstract
The first measurement results of the vertical profiles of nitrogen dioxide over Minsk employing the Multi-axis recorder of spectra MARS-B and analysis of the obtained spatio-temporal series for 2017 is presented. The vertical profiles of nitrogen dioxide have been retrieved in spectral region 338–370 nm by combining the Multi-axis Differential Optical Absorption Spectroscopy method and PriAM algorithm for inverse problem solving during daylight. A comparative analysis of the measurement results has been carried out. The classification by dividing the obtained variety of registered nitrogen dioxide profiles into six groups has been presented. Obtained time series of surface layer nitrogen dioxide concentrations as well as nitrogen dioxide total columns have been presented, their statistics have been analyzed, and comparisons with the level of the maximum permissible concentration of nitrogen dioxide for a human have been performed. The values of near-surface concentrations have been compared with the impact gas analyzer data by monitoring network of the Belhydrometcentre (post No. 11), the analysis of the obtained data rejects the hypothesis of their statistical relationship on the scale of a 1-month time series.
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