Plage

{
  "id": "MLC-T-MET-002043",
  "term": "Plage",
  "field": "Meteorology and atmospheric science",
  "definitions": [
    "A bright region observed in the Sun's chromosphere, appearing as an irregular network of luminous patches. These areas are hotter and denser than the surrounding chromosphere and are associated with magnetic field concentrations. Plage regions are often found near sunspots and are best observed in the light of the hydrogen-alpha or calcium K spectral lines.",
    "In solar-terrestrial terms, an extended emission feature of an active region that exists from the emergence of the first magnetic flux until the widely scattered remnant magnetic fields merge with the background."
  ],
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/plage/"
}