Gauge relation

{
  "id": "MLC-T-MET-005883",
  "term": "Gauge relation",
  "field": "Meteorology and atmospheric science",
  "definition": "A mathematical relationship used in radar meteorology to estimate rainfall rate (R) from the measured radar reflectivity factor (Z). This empirical formula takes the form Z = aR^b, where 'a' and 'b' are coefficients that depend on the type of precipitation and the characteristics of the raindrop size distribution. The Marshall-Palmer relation, with a=200 and b=1.6, is a widely cited example for stratiform rain.",
  "url": "https://mlchart.com/terminology/meteorology/gauge-relation/"
}