Spectral hygrometer

{
  "id": "MLC-T-MET-009101",
  "term": "Spectral hygrometer",
  "field": "Meteorology and atmospheric science",
  "definition": "An instrument that determines the amount of water vapor in the atmosphere by measuring the absorption of electromagnetic radiation at specific wavelengths. It operates by passing a beam of light through an air sample and detecting how much energy is absorbed by water vapor molecules, a quantity proportional to the water vapor concentration. Spectral hygrometers are known for their high accuracy and fast response times, making them suitable for research applications like eddy covariance measurements.",
  "synonyms": [
    "optical hygrometer"
  ],
  "see_also": [
    "Krypton hygrometer",
    "Lyman-alpha hygrometer",
    "differential absorption hygrometer"
  ],
  "url": "https://mlchart.com/terminology/meteorology/spectral-hygrometer/"
}