Filtered equations

{
  "id": "MLC-T-MET-005572",
  "term": "Filtered equations",
  "field": "Meteorology and atmospheric science",
  "definition": "Prognostic equations in numerical weather prediction that have been modified to remove or suppress high-frequency, meteorologically insignificant waves, such as sound waves or gravity waves. This filtering allows for larger time steps in numerical integration, improving computational efficiency without significantly affecting the forecast of synoptic-scale features. Primitive equations are often filtered to produce balanced models.",
  "see_also": [
    "filtering approximations"
  ],
  "url": "https://mlchart.com/terminology/meteorology/filtered-equations/"
}