Actinic flux

{
  "id": "MLC-T-MET-003265",
  "term": "Actinic flux",
  "field": "Meteorology and atmospheric science",
  "definition": "The total radiant energy per unit area per unit time, integrated over all directions, that is capable of inducing photochemical reactions in the atmosphere. It is a measure of the radiation field available to drive atmospheric photochemistry, distinct from irradiance which measures flux from a single direction. Actinic flux is typically measured in units of photons per square centimeter per second.",
  "see_also": [
    "radiance",
    "irradiance"
  ],
  "url": "https://mlchart.com/terminology/meteorology/actinic-flux/"
}