Breeding method

{
  "id": "MLC-T-MET-004027",
  "term": "Breeding method",
  "field": "Meteorology and atmospheric science",
  "definition": "A technique for generating the initial perturbations used in ensemble weather forecasting to represent atmospheric uncertainty. The method involves introducing a small, random perturbation to an atmospheric model's initial state, running the model for a short period, and then calculating the difference between the perturbed and unperturbed forecasts. This difference, which represents a fast-growing error mode, is then rescaled and used as a new perturbation for the next cycle, effectively 'breeding' dynamically unstable structures.",
  "see_also": [
    "bred vectors"
  ],
  "url": "https://mlchart.com/terminology/meteorology/breeding-method/"
}