Angel

{
  "id": "MLC-T-MET-003504",
  "term": "Angel",
  "field": "Meteorology and atmospheric science",
  "definitions": [
    "A faint, diffuse radar echo that does not correspond to any visible meteorological phenomenon such as precipitation or clouds. These echoes are often caused by insects, birds, or refractive index fluctuations in the clear atmosphere. Angels can sometimes interfere with the detection of actual weather targets on radar displays.",
    "Radar echoes caused by birds, insects, and localized refractive index discontinuities."
  ],
  "see_also": [
    "Bragg scattering",
    "clear-air echo"
  ],
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/angel/"
}