{
  "@type": "dcat:Dataset",
  "accessLevel": "public",
  "bureauCode": [
    "026:00"
  ],
  "contactPoint": {
    "@type": "vcard:Contact",
    "fn": "NSIDC Services",
    "hasEmail": "mailto:nsidc@nsidc.org"
  },
  "description": "ATL21 contains daily and monthly gridded polar sea surface height (SSH) anomalies, derived from the along-track ATLAS/ICESat-2 L3A Sea Ice Height product (ATL10, V6). The ATL10 product identifies leads in sea ice and establishes a reference sea surface used to estimate SSH in 10 km along-track segments. ATL21 aggregates the ATL10 along-track SSH estimates and computes daily and monthly gridded SSH anomaly in NSIDC Polar Stereographic Northern and Southern Hemisphere 25 km grids.",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "description": "Direct download via HTTPS protocol.",
      "downloadURL": "https://n5eil01u.ecs.nsidc.org/ATLAS/ATL21.003/",
      "format": "HTML",
      "mediaType": "text/html",
      "title": "Download this dataset"
    },
    {
      "@type": "dcat:Distribution",
      "description": "Includes a user's guide, supplemental documents like ATBDs and academic papers, How Tos, FAQs, etc.",
      "downloadURL": "https://doi.org/10.5067/ATLAS/ATL21.003",
      "format": "HTML",
      "mediaType": "text/html",
      "title": "View documentation related to this dataset"
    },
    {
      "@type": "dcat:Distribution",
      "description": "NASA's newest search and order tool for subsetting, reprojecting, and reformatting data.",
      "downloadURL": "https://search.earthdata.nasa.gov/search?q=ATL21+V003",
      "format": "HTML",
      "mediaType": "text/html",
      "title": "Download this dataset through Earthdata Search"
    },
    {
      "@type": "dcat:Distribution",
      "description": "Provides access to data, documentation, tools, citation information, support, and other resources.",
      "downloadURL": "https://doi.org/10.5067/ATLAS/ATL21.003",
      "format": "HTML",
      "mediaType": "text/html",
      "title": "This dataset's landing page"
    },
    {
      "@type": "dcat:Distribution",
      "description": "Search and filter data files using a map-based interface",
      "downloadURL": "https://nsidc.org/data/data-access-tool/ATL21/versions/3/",
      "format": "HTML",
      "mediaType": "text/html",
      "title": "Download this dataset"
    },
    {
      "@type": "dcat:Distribution",
      "description": "Search results for publications that cite this dataset by its DOI.",
      "downloadURL": "https://scholar.google.com/scholar?q=10.5067%2FATLAS%2FATL21.003",
      "format": "HTML",
      "mediaType": "text/html",
      "title": "Google Scholar search results"
    }
  ],
  "identifier": "C2737912334-NSIDC_ECS",
  "issued": "2018-10-14",
  "keyword": [
    "earth-science",
    "oceans",
    "sea-surface-topography"
  ],
  "landingPage": "https://doi.org/10.5067/ATLAS/ATL21.003",
  "language": [
    "en-US"
  ],
  "modified": "2025-03-31",
  "programCode": [
    "026:001"
  ],
  "publisher": {
    "@type": "org:Organization",
    "name": "NASA NSIDC DAAC"
  },
  "spatial": "-180.0 -90.0 180.0 90.0",
  "temporal": "2018-10-14T00:00:00Z/2025-02-24T00:00:00Z",
  "theme": [
    "geospatial"
  ],
  "title": "ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly V003"
}