Nephometer

{
  "id": "MLC-T-MET-007505",
  "term": "Nephometer",
  "field": "Meteorology and atmospheric science",
  "definition": "An instrument for measuring cloudiness, meaning the fraction of the sky covered by cloud, as distinct from a nephoscope, which gives the direction and speed of cloud motion. Observers now usually estimate cloud amount by eye in oktas, though sky-imaging systems measure it automatically at some stations.",
  "synonyms": [
    "nephelometer"
  ],
  "url": "https://mlchart.com/terminology/meteorology/nephometer/"
}