Polar outbreak

{
  "id": "MLC-T-MET-008030",
  "term": "Polar outbreak",
  "field": "Meteorology and atmospheric science",
  "definition": "A rapid and extensive southward movement of very cold air from the polar regions into lower latitudes. This event causes a sharp and widespread decrease in temperature, often accompanied by strong winds and frost. Polar outbreaks are driven by the expansion of the polar high-pressure system.",
  "synonyms": [
    "cold-air outbreak"
  ],
  "url": "https://mlchart.com/terminology/meteorology/polar-outbreak/"
}