Haze in the atmosphere accompanied by high levels of ozone and nitrogen oxides, caused by the action of sunlight on pollutants.
More example sentences
- One project they have planned is the ultra-sensitive detection of short-lived atmospheric species that control photochemical smog formation.
- In summer the city suffers high levels of photochemical smog, and in winter high levels of haze are common.
- Ozone at ground level can be manufactured as part of photochemical smog.