Permanent wave

{
  "id": "MLC-T-MET-007869",
  "term": "Permanent wave",
  "field": "Meteorology and atmospheric science",
  "definition": "A large-scale atmospheric wave that maintains a relatively fixed position in relation to the Earth's surface, unlike transient synoptic-scale waves. These waves are primarily forced by topography, such as mountain ranges, and by land-sea thermal contrasts. The most prominent examples are the planetary-scale Rossby waves in the upper troposphere, which influence global weather patterns.",
  "url": "https://mlchart.com/terminology/meteorology/permanent-wave/"
}