spread-F

{
  "id": "MLC-T-MET-009163",
  "term": "spread-F",
  "field": "Meteorology and atmospheric science",
  "definition": "A phenomenon observed in ionograms where the F-region echo appears as a diffuse, broadened trace rather than a sharp, distinct line. This indicates the presence of small-scale irregularities in electron density within the F-layer of the ionosphere, which scatter radio waves. Spread-F is more common at night and in equatorial or high-latitude regions, affecting radio communication and GPS signals.",
  "url": "https://mlchart.com/terminology/meteorology/spread-f/"
}