Mother-of-pearl clouds

{
  "id": "MLC-T-MET-007419",
  "term": "Mother-of-pearl clouds",
  "field": "Meteorology and atmospheric science",
  "definition": "Rare, iridescent clouds that form in the stratosphere at very high altitudes, between 15 and 25 kilometers. Their vibrant colors, resembling mother-of-pearl, result from the diffraction of sunlight by tiny ice crystals within the cloud. These clouds are best seen at twilight in polar regions during winter.",
  "see_also": [
    "iridescent clouds",
    "nacreous clouds"
  ],
  "url": "https://mlchart.com/terminology/meteorology/mother-of-pearl-clouds/"
}