Initialization

{
  "id": "MLC-T-MET-006554",
  "term": "Initialization",
  "field": "Meteorology and atmospheric science",
  "definition": "The process of adjusting raw data for a numerical weather prediction model to create a dynamically consistent state between variables like wind, pressure, and temperature. This adjustment removes unrealistic high-frequency oscillations, known as gravitational waves, that would otherwise contaminate the forecast. Methods include normal mode initialization, which filters out fast-moving waves, and digital filter initialization, which applies a low-pass filter to the model's time-tendency fields.",
  "see_also": [
    "dynamic initialization",
    "normal mode initialization"
  ],
  "url": "https://mlchart.com/terminology/meteorology/initialization/"
}