Categories: Delhi

Delhi-NCR breaks the ozone limit more often: learning

New Delhi: Ozone Basic Level – Highly reactive gases that are very dangerous for those who have breathing and asthma conditions – become wider in Delhi and other national capital areas.
The number of days when the ozone limit is beyond the standard permitted until this year also increases, finding new analysis by the Center for Science and the Environment (CSE).
The CSE report found that the standard eight hours for soil ozone exceeded the limit at at least one station in Delhi in 290 days in 2020.
It rises 30 days compared to 2018 and this year, this year, this year the report showed that the city had recorded 169 Late days, increased by 21 days for the same period last year.
While previously it was believed that gas was generally dominant during the summer, forming the interaction between gas in front of the sun, this study found a high level of ozone even during the rainy season and winter.
“Ozone is now a round-year problem that requires urgent attention from a clean air program,” said CSE Executive Director Anumite Roychowdhury, who led the research.
“The risk of it is often not well understood, because current regulatory practices are spatially the average data from all monitoring stations blunt the curve, and underestimate the magnitude of the threat from the location affected by the worst and also in different seasons,” he added.
Not only a few parts of the city that violate standards every day, but some locations now have also begun to show higher readings, indicating a broader risk distribution.
Last year, there were 30% more days when six or more stations exceeded standards compared to 2019.
The study said in the first half of 2021, 108 days have been registered where six or more stations have exceeded standards – higher than in the same period in the same period in the year -When before.
Unlike PM2.5, PM10 or NO2, which has a 24-hour standard, ozone has a standard of eight hours and a standard one hour, because of how dangerous gas is in a short span of time.
The standard eight ozone ozone is 100 micrograms per cubic meter, while the hourly standard is 180 micrograms per cubic meter.
The study was also found in the terms of Hotspot Ozone, South Delhi and Lutyens’ Delhi and North Delhi recorded a high number of days where Ozone violated daily standards.
In Southern Delhi, Dr KS (233 days) shooting range (233 days), Siri Fortress (150 days), Nehru Nagar (174 days), and Sri Aurobindo Marg (126 days) have more than 120 days where standards are exceeded by 2020.
They are made Four of the top five of the most polluted spots in Delhi.
In Central Delhi, St Art N (116 days) and the National Stadium (82 days) have a relatively high amount of service, while Sonia Vihar in North Delhi records 142 days where the standard is exceeded.

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