Journal
SUSTAINABILITY
Volume 14, Issue 21, Pages -Publisher
MDPI
DOI: 10.3390/su142114470
Keywords
air pollution; detrended cross-correlation analysis; emissions; long memory
Funding
- Fundacao para a Ciencia e a Tecnologia [UIDB/05064/2020]
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This study evaluated the evolution of atmospheric pollutants and their relationship with climate variables, finding that air pollution tends to increase, and there is a cross-correlation between air pollution and climate variables, with NOx concentrations showing persistent behavior.
In this work, we evaluated the evolution of some atmospheric pollutants (O-3, NOx and PM10) over time and their relationship with four different climate variables (solar irradiation, air temperature, relative humidity and wind speed). To this end, we assessed the long-range dependence of those concentrations with a Detrended Fluctuation Analysis (DFA) and analyzed the cross-correlation of such dependence with the climate variables through a Detrended Cross-Correlation Coefficient Analysis (rho DCCA). The results show that air pollution tends to increase over time, impairing air quality and likely affecting human health. The results indicate a cross-correlation between air pollution and the climatic variables, which persisted for a certain period, with a greater correlation between O-3 concentration and wind, mainly temperature, and a negative correlation with humidity for all monitoring stations. Moreover, unlike O-3 and PM10, NOx concentrations always had a persistent behavior in the region of study for the entire analyzed period.
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