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Ecology & Environment
Pradeep Kumar

31/07/21 09:20 AM IST

Ozone levels exceeding permitted levels

In news
  • A Centre for Science and Environment study has found that ozone levels are exceeding the permitted levels even during winter in Delhi-NCR.
Details
  • Ozone is now a round-the-year problem requiring urgent [action] and the situation demands refinement of clean air action plan to add strategies for ozone mitigation, with stronger action on vehicles, industry and waste burning.
  • Ozone, a highly reactive gas and dangerous for those suffering from respiratory conditions and asthma, is becoming more widespread in Delhi and NCR across all seasons.
  • The CSE analysis found that the city-wide average largely remains within the standard with just occasional exceedance.
Ozone
  • Ozone (O3) is a highly reactive gas composed of three oxygen atoms. It is both a natural and a man-made product that occurs in the Earth's upper atmosphere (the stratosphere) and lower atmosphere (the troposphere).  Depending on where it is in the atmosphere, ozone affects life on Earth in either good or bad ways.
  • Stratospheric ozone is formed naturally through the interaction of solar ultraviolet (UV) radiation with molecular oxygen (O2).
Source: The Hindu

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