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Increase in Ozone Levels
June 29 , 2020
1413 days
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- Recently, the Centre for Science and Environment (CSE) has observed an increase in ozone (a harmful pollutant) levels in the several cities of the country.
- The ozone is primarily a “sunny weather problem” in India as the presence of sunlight has a direct impact on formation of ground level ozone.
- Heat acts as a catalyst, facilitating photochemical reactions, hence higher concentrations of ozone are seen during the summer months.
- The characteristics of summer pollution include high winds, intermittent rains, thunderstorms, high temperature and heat waves.
- Usually, the ozone levels tend to spike when winter conditions subside, and its presence is felt most during the day.
- Ozone is not directly emitted by any source.
- It is formed by photochemical reactions between oxides of nitrogen (NOx), other volatile organic compounds (VOCs) and gases in the air under the influence of sunlight and heat.
- The ‘good’ ozone present in the earth’s ozone layer protects human beings from harmful Ultraviolet (UV) radiation whereas the ground level ozone is highly reactive and can have adverse impacts on human health.
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