Hydroxyl emission

{
  "id": "MLC-T-MET-006358",
  "term": "Hydroxyl emission",
  "field": "Meteorology and atmospheric science",
  "definition": "The emission of light by excited hydroxyl (OH) radicals in the upper atmosphere, particularly in the mesosphere and lower thermosphere. This emission occurs as a result of chemical reactions, such as the recombination of atomic hydrogen and ozone. Hydroxyl airglow is a common phenomenon observed at night and provides information about atmospheric temperature and composition.",
  "synonyms": [
    "Meinel bands"
  ],
  "url": "https://mlchart.com/terminology/meteorology/hydroxyl-emission/"
}