Geostrophic momentum approximation

{
  "id": "MLC-T-MET-005954",
  "term": "Geostrophic momentum approximation",
  "field": "Meteorology and atmospheric science",
  "definition": "A simplification in atmospheric dynamics where the advection of momentum is calculated using geostrophic velocities, rather than the true wind velocities. This approximation is valid for large-scale, slow-moving atmospheric flows where the Coriolis force and pressure gradient force are nearly balanced. It is often applied in theoretical models of synoptic-scale weather systems.",
  "url": "https://mlchart.com/terminology/meteorology/geostrophic-momentum-approximation/"
}