Vertical vorticity

{
  "id": "MLC-T-MET-010003",
  "term": "Vertical vorticity",
  "field": "Meteorology and atmospheric science",
  "definition": "The component of the vorticity vector that is perpendicular to the Earth's surface, representing the local rotation of air about a vertical axis. Positive vertical vorticity indicates cyclonic rotation (counter-clockwise in the Northern Hemisphere), while negative indicates anticyclonic rotation. It is a key parameter in understanding the development and intensification of cyclones and thunderstorms.",
  "url": "https://mlchart.com/terminology/meteorology/vertical-vorticity/"
}