Abstract
An intensive winter campaign was organized for measuring the surface air pollutants in southeastern Europe. For a three months period, the gas concentrations of NO x , SO 2 , CO, O 3 , and CH 4 as well as meteorological parameters were simultaneously sampled to evaluate the variations and characteristic reactions between the gases during winter at the measuring site. The photochemical production of the ozone was observed through the diurnal variation of ozone and the solar radiation, the maximum concentration for ozone being reached one hour after the maximum value for solar radiation. A non-parametric wind regression method was used to highlight the sources of the air pollutants. The long-range transport of SO 2 and two hotspots for CO from traffic and from residential heating emissions were emphasized. The traffic hotspot situated north of the measuring site, close to the city ring road, is also a hotspot for NO x . The air quality during the cold season was evaluated by comparing the measured gas concentration with the European limits. During the measuring period, the values for NO 2 , CO, and SO 2 concentration were at least two times lower than the European Union pollution limits. Only twice during the study period was the concentration of O 3 higher than the established limits.
Highlights
The atmospheric constituents, gases and aerosols have been intensely studied in the past decades [1,2,3] due to their dramatic influence the human life
The sources for aerosols, and especially for fine particles, are 25% from traffic, 15% from industries including the electricity generation sector, 20% from domestic fuel combustion, 22% from other human origin activities and only 18% from natural sources. For both gases and aerosols, the anthropogenic sources account for approximately 70–80%
The aim of this study was to provide, for the first time to the authors’ knowledge, a comprehensive study of the gaseous atmospheric constituents in a peri-urban area in Romania, a country situated in Eastern Europe
Summary
The atmospheric constituents, gases and aerosols have been intensely studied in the past decades [1,2,3] due to their dramatic influence the human life. Change (IPCC) report [3] and United Nations Framework Convention on Climate (COP24) report [4], the predominant sources for greenhouse gases are 35% from energy industry for electricity and heat generation, 24% from agriculture, 21% from industry, 14% transport and 6% from buildings. The sources for aerosols, and especially for fine particles, are 25% from traffic, 15% from industries including the electricity generation sector, 20% from domestic fuel combustion, 22% from other human origin activities and only 18% from natural sources. For both gases and aerosols, the anthropogenic sources account for approximately 70–80%. The greenhouse gases (i.e., carbon dioxide (CO2 ), methane (CH4 ), ozone (O3 ), nitrous oxide (N2 O), and fluorinated
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