Why Summer Is the Peak Time for Ozone Pollution

Recently, in order to deal with heavy ozone pollution weather and protect public health, the traffic management departments of some cities have decided to launch temporary traffic management measures for yellow warning of heavy ozone pollution weather and implement temporary traffic management measures. We can't help but wonder: what is the virtue and ability of ozone pollution, and why can it surpass PM2.5 to achieve a remarkable position at this time?

There are six main ways to produce ozone: 1. Ozone produced by smog; 2. Natural ozone produced by ultraviolet light; 3. Commercial ozone production by ultraviolet light; 4. Natural ozone produced by discharge; 5. Commercial ozone produced by discharge; 6. Electrolysis Ozone production.



Urban ozone pollution is mainly caused by ozone produced by smog. Ozone is formed at ground level through a chemical reaction between nitrogen dioxide (NO2) and volatile organic compounds (VOCs) and ultraviolet rays from sunlight. The difference between this unhealthy ozone production and commercial ozone production or natural ozone production in our ozone layer is that smog-generated ozone is an unhealthy cycle that is hard to break. In the ozone produced by the smog, there are long-term changes in air quality, and the ozone not only breaks down into harmless oxygen, but also recombines in the atmosphere to form NO2 and restarts the unhealthy cycle.

Ozone is produced indirectly from the chemical reactions of nitrogen oxide and volatile organic compound pollution and ultraviolet light; unlike naturally occurring or industrially formed ozone, when ozone is formed from smog, the ozone cycle begins and is difficult to break. This leads to a slow rise in unhealthy ozone levels in our environment.

According to statistics, the number of automobiles in cities is very high, and the number of automobiles is still increasing every year, and automobile exhaust contains a large amount of nitrogen oxides. Volatile organic compounds mainly come from industrial production, furniture factories, petrochemicals, paper mills, electronics factories, gas stations, etc. In summer, the sun is the most abundant from May to September. Once nitrogen oxides combine with volatile organic compounds, it is easy to form ozone.