Hygroscopic nucleus

{
  "id": "MLC-T-MET-006376",
  "term": "Hygroscopic nucleus",
  "field": "Meteorology and atmospheric science",
  "definition": "A microscopic particle in the atmosphere that readily attracts and absorbs water vapor, facilitating the condensation process at relative humidities below 100%. These nuclei, often composed of salts or acids, serve as sites for water droplets to form, playing a role in cloud formation and precipitation. Common examples include sea salt particles and sulfate aerosols.",
  "url": "https://mlchart.com/terminology/meteorology/hygroscopic-nucleus/"
}