Abstract
The assessment of changes in air pollution quality for 4 selected sites in Southern and Central Poland was presented in this paper. The evaluation was based on the sets of long-term data, recorded by the state air monitoring network. Concentrations of O3, PM10, SO2, NOx, and CO, were considered. The basis for the calculations were 12-year time series of hourly concentrations. Using the hourly data, the monthly averages were calculated to illustrate seasonal changes of pollutant concentrations. Linear trends were adjusted to the concentration courses with the least squares method. Long-time trends were calculated for each pollutant separately. Based on the analysis of the trend lines slopes, risks those may arise in the future were identified.
Highlights
Before the accession to the European Union Poland had the reputation of a country with heavily polluted air
A new air monitoring network was established that operates and collects data according to European standards up to the present [1, 2]
Long-term measurements of the air monitoring stations allow to answer the question how the air quality has changed in time
Summary
Before the accession to the European Union Poland had the reputation of a country with heavily polluted air. Joining the EU in 2004 was connected with the adoption of European standards of air protection, including a significant reorganization of the air monitoring system. Long-term measurements of the air monitoring stations allow to answer the question how the air quality has changed in time. One way of air quality evaluation is to identify trends in monitoring time series. The aim of the study was to identify the trends of changes in the concentration levels of main air pollutants at some different localisations in Poland. In this examination, 2005 was adopted as the starting point in the analysed time series. For various measuring stations and various air pollutants, a mathematical form of linear trends was found
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