Circumzenithal arc

{
  "id": "MLC-T-MET-004313",
  "term": "Circumzenithal arc",
  "field": "Meteorology and atmospheric science",
  "definition": "An optical phenomenon appearing as a brightly colored, arc-shaped halo located directly above the observer, centered on the zenith. It forms when sunlight refracts through plate-shaped ice crystals in cirrus clouds, similar to a circumhorizontal arc. This arc is often more vivid than a rainbow and requires the sun to be at an elevation between 0 and 32 degrees.",
  "url": "https://mlchart.com/terminology/meteorology/circumzenithal-arc/"
}