{
  "@type": "dcat:Dataset",
  "accessLevel": "public",
  "bureauCode": [
    "026:00"
  ],
  "contactPoint": {
    "@type": "vcard:Contact",
    "fn": "Earthdata Forum",
    "hasEmail": "mailto:earthdata-support@nasa.gov"
  },
  "description": "This dataset provides atmospheric backscattering coefficient profiles collected during Active Sensing of CO2 Emissions over Nights, Days, and Seasons (ASCENDS) deployments from 2017-07-20 to 2017-08-08 over Alaska, U.S., and the Yukon and Northwest Territories of Canada. These profiles were measured by the CO2 Sounder Lidar instrument carried on a DC-8 aircraft. The airborne CO2 Sounder is a pulsed, multi-wavelength Integrated Path Differential Absorption lidar that estimates column-averaged dry-air CO2 mixing ratio (XCO2) in the nadir path from the aircraft to the scattering surface. In addition to XCO2, the lidar receiver recorded the time-resolved atmospheric backscatter signal strength as the laser pulses propagated through the atmosphere. Raw lidar data were converted to the atmospheric backscatter cross-section product and the two-way atmosphere transmission, also known as attenuated backscatter profiles. These ASCENDS flights were coordinated with the 2017 Arctic-Boreal Vulnerability Experiment (ABoVE) campaign and are provided in ICARTT format.",
  "distribution": [
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      "@type": "dcat:Distribution",
      "conformsTo": "http://www.isotc211.org/2005/gmi",
      "description": "The metadata's original source.",
      "downloadURL": "https://cmr.earthdata.nasa.gov/search/concepts/C2264344759-ORNL_CLOUD.iso19115",
      "format": "ISO",
      "mediaType": "text/xml",
      "title": "Original Metadata"
    },
    {
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      "downloadURL": "https://above.nasa.gov",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://daac.ornl.gov/ABOVE/guides/ABoVE_ASCENDS_Backscatter_Fig1.jpg",
      "format": "JPEG",
      "mediaType": "image/jpeg"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://data.ornldaac.earthdata.nasa.gov/protected/bundle/ABoVE_ASCENDS_Backscatter_2051.zip",
      "format": "ZIP",
      "mediaType": "application/zip"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://data.ornldaac.earthdata.nasa.gov/public/above/ABoVE_ASCENDS_Backscatter/comp/ABoVE_ASCENDS_Backscatter-SoftwareCodes.zip",
      "format": "ZIP",
      "mediaType": "application/zip"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://data.ornldaac.earthdata.nasa.gov/public/above/ABoVE_ASCENDS_Backscatter/comp/ABoVE_ASCENDS_Backscatter.pdf",
      "format": "PDF",
      "mediaType": "application/pdf"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://doi.org/10.3334/ORNLDAAC/2051",
      "format": "HTML",
      "mediaType": "text/html"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://search.earthdata.nasa.gov/search/granules?p=C2264344759-ORNL_CLOUD",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    }
  ],
  "identifier": "10.3334/ORNLDAAC/2051",
  "keyword": [
    "earth-science-lidar-spectral-engineering-lidar-backscatter"
  ],
  "license": "https://www.usa.gov/government-works",
  "modified": "2026-09-08",
  "programCode": [
    "026:000"
  ],
  "publisher": {
    "@type": "org:Organization",
    "name": "ORNL_DAAC"
  },
  "spatial": "[\"CARTESIAN\", [{\"WestBoundingCoordinate\": -165.685, \"NorthBoundingCoordinate\": 71.27, \"EastBoundingCoordinate\": -98.1479, \"SouthBoundingCoordinate\": 34.594}]]",
  "temporal": "2017-07-20/2017-08-08",
  "theme": [
    "Earth Science"
  ],
  "title": "ABoVE/ASCENDS: Atmospheric Backscattering Coefficient Profiles from CO2 Sounder, 2017"
}