Lyman-alpha hygrometer

{
  "id": "MLC-T-MET-007072",
  "term": "Lyman-alpha hygrometer",
  "field": "Meteorology and atmospheric science",
  "definition": "An instrument used to measure atmospheric water vapor concentration by detecting the absorption of ultraviolet radiation at the Lyman-alpha wavelength by water molecules. This technique provides rapid and precise measurements of humidity, particularly in turbulent atmospheric conditions. It is often employed in eddy covariance systems.",
  "url": "https://mlchart.com/terminology/meteorology/lyman-alpha-hygrometer/"
}