Measured ceiling

{
  "id": "MLC-T-MET-001671",
  "term": "Measured ceiling",
  "field": "Meteorology and atmospheric science",
  "definitions": [
    "The height above the Earth's surface of the lowest layer of clouds or obscuring phenomena that covers more than half of the sky. This value is determined by instruments such as a ceilometer or by human observation from the ground. It is a key meteorological parameter for aviation safety and is reported in METAR observations.",
    "A ceiling classification applied when the ceiling value has been determined by an instrument, such as a ceilometer or ceiling light, or by the known heights of unobscured portions of objects, other than natural landmarks, near the runway. See variable ceiling."
  ],
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/measured-ceiling/"
}