Westerly wave

{
  "id": "MLC-T-MET-010207",
  "term": "Westerly wave",
  "field": "Meteorology and atmospheric science",
  "definition": "A wave-like disturbance in the mid-latitude westerly wind flow, characterized by alternating troughs and ridges in the atmospheric pressure field. These waves propagate eastward and are responsible for much of the day-to-day weather variability in temperate regions. They are often depicted on constant pressure charts, such as the 500 hPa level.",
  "see_also": [
    "easterly wave"
  ],
  "url": "https://mlchart.com/terminology/meteorology/westerly-wave/"
}