Dobson unit

{
  "id": "MLC-T-CHM-003367",
  "term": "Dobson unit",
  "field": "Chemistry",
  "definition": "A unit of measurement used to describe the total amount of ozone in a vertical column of the Earth's atmosphere. One Dobson Unit (DU) corresponds to a layer of pure ozone 0.01 millimeters thick at standard temperature and pressure (0 °C and 1 atmosphere). The global average total column ozone is approximately 300 DU.",
  "subject": "Chemistry and the Environment",
  "references": [
    "PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2185 (https://doi.org/10.1351/pac199062112167)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/dobson-unit/"
}