Radio Emission

{
  "id": "MLC-T-MET-002234",
  "term": "Radio Emission",
  "field": "Meteorology and atmospheric science",
  "definition": "Emissions of the sun in radio wavelengths from centimeters\nto dekameters, under both quiet and disturbed conditions.\n\nType I. A noise storm composed of many short, narrow-band bursts\nin the metric range (300 - 50 MHz).\n\nType II. Narrow-band emission that begins in the meter range\n(300 MHz) and sweeps slowly (tens of minutes) toward deka-\nmeter wavelengths (10 MHz). Type II emissions occur in\nloose association with major FLAREs and are indicative of\na shock wave moving through the solar atmosphere.\n\nType III. Narrow-band bursts that sweep rapidly (seconds) from\ndecimeter to dekameter wavelengths (500 - 0.5 MHz). They\noften occur in groups and are an occasional feature of complex\nsolar ACTIVE REGIONs.\n\nType IV. A smooth continuum of broad-band bursts primarily in the\nmeter range (300 - 30 MHz). These bursts are associated with\nsome major flare events beginning 10 to 20 minutes after the\nflare maximum, and can last for hours",
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/radio-emission/"
}