Sigma-zero

{
  "id": "MLC-T-MET-008867",
  "term": "Sigma-zero",
  "field": "Meteorology and atmospheric science",
  "definition": "The normalized radar cross-section per unit area of a distributed target, often expressed in decibels. In remote sensing, it quantifies the backscattering strength of a surface, such as the ocean or land, to a radar signal. This parameter is used to derive information about surface roughness, wind speed over the ocean, or soil moisture.",
  "url": "https://mlchart.com/terminology/meteorology/sigma-zero/"
}