Pergelation

{
  "id": "MLC-T-MET-007852",
  "term": "Pergelation",
  "field": "Meteorology and atmospheric science",
  "definition": "The process by which ground or soil becomes permanently frozen, leading to the formation of permafrost. This occurs when the annual mean air temperature is consistently below freezing, preventing the complete thawing of the ground during summer months. Pergelation is a key process in the development and maintenance of permafrost regions, influencing hydrology and ecosystems.",
  "url": "https://mlchart.com/terminology/meteorology/pergelation/"
}