VHF source

{
  "id": "MLC-T-MET-010837",
  "term": "VHF source",
  "field": "Meteorology and atmospheric science",
  "definition": "A discrete location within a thunderstorm that emits radio waves in the Very High Frequency (VHF) band, from 30 to 300 megahertz. These emissions are produced by the electrical breakdown processes that form a lightning discharge, such as the propagation of leaders. Networks of ground-based sensors, known as lightning mapping arrays, detect these signals to create three-dimensional maps of lightning channel development inside clouds over time.",
  "url": "https://mlchart.com/terminology/meteorology/vhf-source/"
}