ANALYSIS AND COMPARISON OF METEOROLOGICAL DATA: CONSISTENCY OF INFORMATION FROM VARIOUS SOURCES FOR IRKUTSK CITY

Abstract

Abstract. Air pollution significantly affects meteorological parameters, including air temperature, humidity and wind speed. Black carbon (soot) and sulfur dioxide gases, among other pollutants, play key roles in this process by absorbing solar radiation and interacting with water vapor in the atmosphere, respectively. This requires careful study and consideration when developing pollution reduction strategies. The city of Irkutsk is one of the cities of the Irkutsk region participating in the federal project “Clean Air” of the national project “Ecology”. This article is devoted to the study of differences in meteorological data for the city of Irkutsk, obtained from two different sources: https://rp5.ru and http://aisori-m.meteo.ru. The study was conducted over the period from 2010 to 2022. The paired Student's t test was used to determine the statistical significance of differences between meteorological data samples; this method allows one to determine whether differences between two data sets are due to chance or whether they actually reflect real differences. In the course of the work, a comparison and analysis of average monthly indicators of the following weather parameters was carried out: the probability of strong wind, calm, precipitation and fog, as well as the meteorological potential of air pollution (MPAP) calculated on their basis from industrial emissions of pollutants. It was found that there were differences in all data sets, with the exception of the probability of high winds. Possible reasons for these discrepancies have also been proposed.