Definition of photochemical smog in English:

photochemical smog

Line breaks: photo|chem¦ical smog

noun

[mass noun]
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.

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