Rain out

{
  "id": "MLC-T-CHM-009907",
  "term": "Rain out",
  "field": "Chemistry",
  "definitions": [
    "The process by which atmospheric aerosols and soluble gases are removed from the atmosphere by being incorporated into cloud droplets or ice crystals, which then fall to the Earth's surface as precipitation. This is an efficient wet deposition mechanism for cleansing the atmosphere. It differs from washout, which involves removal by falling precipitation below the cloud.",
    "The process by which atmospheric pollutants are removed from the air and deposited onto the Earth's surface through precipitation, such as rain, snow, or fog. This mechanism involves the dissolution of gaseous pollutants or the scavenging of particulate matter by water droplets. It contributes to the wet deposition of substances like acid rain components."
  ],
  "subject": [
    "Chemistry and the Environment",
    "Chemistry and Human Health"
  ],
  "see_also": [
    "scavenging",
    "wash out",
    "pollutant"
  ],
  "references": [
    "PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2209 (https://doi.org/10.1351/pac199062112167)",
    "PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 934 (https://doi.org/10.1351/PAC-REC-08-07-09)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/rain-out/"
}