{
  "termsOfUse": "https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf",
  "keywordVersion": "draft",
  "schemeVersion": "2025-07-25",
  "viewer": "https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/instruments/d6dfbfd7-a7da-4672-9f35-5e8eb94ad65a",
  "lastModifiedDate": "2026-05-08T17:16:45.852Z",
  "uuid": "d6dfbfd7-a7da-4672-9f35-5e8eb94ad65a",
  "prefLabel": "COBALD",
  "isLeaf": true,
  "scheme": {
    "shortName": "instruments",
    "longName": "Instruments"
  },
  "broader": [
    {
      "uuid": "8143e95e-a438-4a2a-82b2-6d7ae079fba7",
      "prefLabel": "Photon/Optical Detectors",
      "scheme": {
        "shortName": "instruments",
        "longName": "Instruments"
      }
    }
  ],
  "narrower": [],
  "related": [],
  "definitions": [
    {
      "text": "The COBALD (Compact Optical Backscatter Aerosol Detector) instrument is a lightweight backscatter sonde designed to be flown on operational weather balloons. It uses two high power LEDs in the blue and near infrared spectral range and detects the backscattered light from air molecules, aerosol or cloud droplets. This allows retrieving information of\naerosol (or cloud) particle size and number density. ",
      "reference": "https://ethz.ch/content/dam/ethz/special-interest/usys/iac/iac-dam/documents/group/chemie/COBALD-DataSheet.pdf"
    }
  ],
  "altLabels": [
    {
      "category": "primary",
      "text": "Compact Optical Backscatter Aerosol Detector"
    }
  ],
  "resources": []
}