Yanai wave

{
  "id": "MLC-T-MET-010303",
  "term": "Yanai wave",
  "field": "Meteorology and atmospheric science",
  "definition": "An equatorially trapped wave that propagates eastward and has characteristics of both a gravity wave and a Kelvin wave, also known as a mixed Rossby-gravity wave. These waves have their largest amplitude in the zonal wind component on the equator and in the meridional wind component off the equator. They are a component of the Madden-Julian Oscillation and are involved in the initiation of El Niño events.",
  "synonyms": [
    "mixed planetary- gravity wave"
  ],
  "see_also": [
    "mixed Rossby-gravity wave"
  ],
  "url": "https://mlchart.com/terminology/meteorology/yanai-wave/"
}