Grid navigation

{
  "id": "MLC-T-MET-010524",
  "term": "Grid navigation",
  "field": "Meteorology and atmospheric science",
  "definition": "A navigational technique used primarily in polar regions for determining direction and position relative to a rectangular grid superimposed on a polar chart projection. On this grid, a constant direction, known as grid north, is established parallel to a chosen meridian, typically the prime meridian. This method overcomes the problem of rapid convergence of true meridians near the geographic poles, which makes navigation using true north impractical.",
  "synonyms": [
    "grid system",
    "G system"
  ],
  "see_also": [
    "aerologation"
  ],
  "url": "https://mlchart.com/terminology/meteorology/grid-navigation/"
}