Ground illumination

{
  "id": "MLC-T-MET-006087",
  "term": "Ground illumination",
  "field": "Meteorology and atmospheric science",
  "definition": "The amount of light reaching the Earth's surface from natural or artificial sources, influencing visibility and surface energy balance. It includes direct sunlight, diffuse skylight, and light from celestial bodies or anthropogenic sources. Measurements are often expressed in lux or foot-candles, indicating the luminous flux per unit area.",
  "url": "https://mlchart.com/terminology/meteorology/ground-illumination/"
}