Los Angeles (photochemical) smog

{
  "id": "MLC-T-MET-007050",
  "term": "Los Angeles (photochemical) smog",
  "field": "Meteorology and atmospheric science",
  "definition": "A type of air pollution formed when sunlight reacts with nitrogen oxides and volatile organic compounds emitted from vehicles and industrial sources. This reaction produces ground-level ozone and other harmful secondary pollutants, creating a brownish haze. It is particularly prevalent in warm, sunny climates with stagnant air, such as the Los Angeles basin.",
  "see_also": [
    "London (sulfurous) smog"
  ],
  "url": "https://mlchart.com/terminology/meteorology/los-angeles-photochemical-smog/"
}