Visn. Nac. Akad. Nauk Ukr. 2021.(3):50-58

Mykhailo V. Savenets
Ukrainian Hydrometeorological Institute of State Emergency Service of Ukraine and National Academy of Sciences of Ukraine Kyiv, Ukraine

Volodymyr I. Osadchyi
Ukrainian Hydrometeorological Institute of State Emergency Service of Ukraine and National Academy of Sciences of Ukraine Kyiv, Ukraine

Andrii V. Oreshchenko
Ukrainian Hydrometeorological Institute of State Emergency Service of Ukraine and National Academy of Sciences of Ukraine Kyiv, Ukraine


The study describes methods for operative monitoring of atmospheric air quality over the territory of Ukraine using the Sentinel-5P satellite data. The methods provide possibility for data specification over the cities. The data processing is fully automatic and deals with the column data of nitrogen dioxide (NO2), carbon monoxide (CO), formaldehyde (HCHO), sulfur dioxide (SO2) and total ozone (O3). The system works every day and starts processing approximately 3 hours after the scanning of Ukrainian territory. The paper describes the procedure of files creation which represents the third level of data archiving. There are implemented the procedures of the adjusting to regular grids and the filtering of statistically unreliable data. The methods for data specification are developed which allow to analyze the content of chemical compounds over the cities. The paper discusses the main features for the interpretation of chemicals’ spatio-temporal distribution. It is emphasized the typical reasons for false interpretation and mistaken conclusions about atmospheric air quality while analyzing the satellite observations.
Keywords: chemical compounds, atmospheric air quality, monitoring, Sentinel-5P, satellite observations.

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