Ozone pollution

  • According to Central Pollution Control Board (CPCB) bulletins, ozone was identified as a prominent pollutant recently, when AQI was in the ‘moderate’ category.
    • Ozone occurs both in Earth’s upper atmosphere (stratospheric or good ozone) and at ground level.
  • Ozone pollution refers to tropospheric or “ground-level” ozone.
  • It is formed when oxides of nitrogen (NOX) and Volatile Organic Compounds react in the presence of sunlight.
  • NOX is released by combustion of fossil fuels from vehicles and industries.
  • Ozone can also be transported long distances by wind.
  • Exposure to excessive ozone can cause problems breathing, trigger asthma, reduce lung function and lead to lung disease.
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