Traffic less than the first block reduced air pollution, but caused surface ozone levels to be damaged.
Lack of traffic during the first lanes of study roads has led to a reduction in air pollution, but may cause damage to surface ozone levels, a new study has found.
Study: York University shows nitrogen dioxide (NO2) levels in the UK averaging 42 per cent, but surface ozone (O3) averaging 11 per cent.
Surface or ground-level ozone can cause a number of health problems, especially in children, the elderly, and people of all ages with lung diseases such as asthma.
Scientists believe that our warm spring weather may be a contributing factor.
The introduction concludes that if the Covid-19 blockade is taken as an example of how the air will respond to further reductions in vehicle emissions by introducing more electric vehicles, it serves as a warning that the O3 problem should also be considered.
James Ames Lee, a professor at the National Center for Atmospheric Sciences in the Department of Chemistry, says the worst levels of the first O3 blockade were in the south of England.
Professor Lee added: “The problem is caused by a change in the chemistry between NOx (nitrous oxide) and O3. The main reason is the change in the level of nitrogen dioxide, but the hot weather in April-May also raised the level of ozone. As a result, we found that UV radiation in the UK is higher than in 2020 compared to previous years, and the largest increase in the south of England.
“London, Oxfordshire Chilton and Cambridge Cambridge have grown by about 50% compared to previous years, and in Glasgow երն Inverse, there has been a smaller increase of about 30%.
“It simply came to our notice then. “In addition to looking at how we reduce nitrogen dioxide levels by reducing diesel and gasoline emissions, we also need to be careful about what happens to ozone so that we do not create other pollutants that are dangerous to human health.”
The report states that the reduction of nitrous oxide in China has led to an increase in O3 և and an air quality reduction strategy is being developed to compensate for the problem. This can be achieved by controlling volatile organic compounds (VOCs), which are gases emitted from industrial products or processes from other man-made activities.
Professor Lee added: “Our research shows that artificial VOCs can be controlled to avoid any health gain that results in a decrease in NO2 with an increase in O3.”
Reference. “The level of NO2 in the UK has dropped by 42% COVID-19: blocking. Impact on the O3 surface “by James D. Lee, Will S. Drysdale, Doug P. Finch, Shona E. Wilde և Paul I. Palmer, December 18, 2020 Atmospheric chemistry և physics,
DOI: 10.5194 / acp-20-15743-2020:
Data was collected from 175 Urban-Rural Automated Network (AURN) Automated Traffic Monitoring sites across the UK by 2020. From March 23 to May 31, և compare with data from the previous five years.