UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-23 1:54
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Conference: Bucharest University Faculty of Physics 2023 Meeting


Section: Atmosphere and Earth Science; Environment Protection


Title:
Temporal trend analysis of trace gases in South – Eastern Romania over the past 15 years


Authors:
Bianca Mihalache (1), Sabina Stefan (1), Gabriela Iorga (1,2)


*
Affiliation:
1) University of Bucharest, Faculty of Physics, (2) University of Bucharest, Dept. of Analytical Chemistry and Physical Chemistry


E-mail
mhl.bianca10@gmail.com


Keywords:
NO2, CO, SO2, O3, Romania, trend analysis


Abstract:
The air quality degrades due to presence in the atmosphere of high levels of atmospheric pollutants. Pollutants also affect the climate and have significant impacts on human health. As South-Eastern Romania (SERo) represents a region under the significant droughts and increasing temperatures due to climate changes, it became important to understand the spatial distributions and contributions of gaseous pollutants to the ambient pollution levels as well as the changes of pollution atmospheric loads across this area. In the present study, datasets comprising hourly concentrations of NO2, CO, SO2 and O3, collected from three monitoring stations were obtained from the National Air Quality Network (RNMCA) over 15 years (2007–2021) and trend analysis was performed. Moreover, the statistical analysis we conducted on the trace gasses showed the areas with lowest and/or with highest concentrations. These changes in the concentration levels seem to be affected by both physical geographical factors and the local economic factors (traffic, industry type, agricultural and biomass burning activities). Our present work shed light on NO2, CO, SO2 and O3 pattern and temporal variations, and the study findings help on both the identification of main pollution sources and for refinement of future pollution mitigation strategies applied to the regional scales.


Acknowledgement:
This work was supported by the NO Grants 2014-2021, under contract 31/2020, EEA-RO-NO-2019-0423 project. Data regarding ground-level air pollution by site was extracted from the public available Romanian National Air Quality Database, www.calitateaer.ro.