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Measurement of Surface Ozone in the Year 2011 at Different Sites over Tamil Nadu, India
The Ozone concentration is influenced by the intensity of solar radiation and chemical reaction between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight. This study aspires to asses distribution of the surface zone concentration, characteristics of hourly and daily mean surface Ozone with different climatic parameters, such as temperature, relative humidity, and wind speed over Tamil Nadu. Measurement was carried out at 11-stations (except this study no data is made available) having different weather conditions during the period from 8th June to 7th July of the year 2011. We were the first researchers visited most of the district of Tamil Nadu state and measured surface Ozone. We have made an effort to identify areas where there is elevated surface Ozone concentration. Results of this study reveals that hourly and daily mean values of ground level Ozone concentrartion in Tamil nadu was 0.0109ppm and 0.0108ppm respectively. The highest ground level Ozone concentration was in Kanniya kumari district (0.0179 ppm). The lowest was in Cuddalore district (0.0038ppm). During the study period, the concentration of ground level Ozone over Tamil Nadu had never exceeded the prescribed value (0.075ppm). The results of this study show that ground level Ozone concentration has a positive correlation with the temperature and negative correlation with the relative humidity and wind speed.
Keywords
Surface Ozone, Diurnal Cycle, Meteorological Parameters, Anthropogenic Sources, VOCs, Nox
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