Black fog

{
  "id": "MLC-T-MET-003938",
  "term": "Black fog",
  "field": "Meteorology and atmospheric science",
  "definition": "A type of fog that appears dark due to the presence of a high concentration of smoke, soot, or industrial pollutants. This phenomenon significantly reduces visibility and is often associated with severe air pollution events in urban or industrial areas. It differs from typical fog, which is composed primarily of water droplets.",
  "url": "https://mlchart.com/terminology/meteorology/black-fog/"
}