CAMELIA CAPATINA, GHEORGHE LAZAR, LUOANA FLORENTINA  PASCU, CLAUDIA MARIA SIMONESCU<br>Analysis of the Tropospheric Ozone Content in the Air from Targu-Jiu and Rovinari Areas

CAMELIA CAPATINA, GHEORGHE LAZAR, LUOANA FLORENTINA PASCU, CLAUDIA MARIA SIMONESCU
Analysis of the Tropospheric Ozone Content in the Air from Targu-Jiu and Rovinari Areas

Abstract:

The measurements of the hourly ground-level ozone (O3) concentration of two monitoring stations from Târgu Jiu and Rovinari area was analysed because elevated O3 concentrations have a negative impact to humans, vegetation, animals and materials. The temporal distribution pattern of ozone in relation to solar radiation intensity was observed. The measurements performed revealed that ozone has an annual variation with a typical spring maximum for Rovinari area, and a typical summer maximum for Târgu-Jiu area due to increased solar radiation. Ozone has a daily pattern driven by levels of ozone precursors with a peak in the afternoons.The possible sources for the variability in the O3 concentrations between these two stations were evaluated based on the available O3 precursors and meteorological data. Higher concentrations of ozone recorded in the Tg-Jiu, compared with the Rovinari are due to the major contribution of NOx and hydrocarbons from vehicle traffic to the obtaining of tropospheric ozone. There were determined the daily maximum 8 h average ozone concentrations. The results show that during 2013, there were not registered values higher than the target value of 120mg/m3 for both monitoring stations. Keywords: tropspheric ozone level, daily maximum 8-h average ozone concentration

Issue: 2014, Volume 65, Issue 12

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