{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xsi:schemaLocation": "https://www.spase-group.org/data/schema https://www.spase-group.org/data/schema/spase-2.7.1.xsd",
    "Version": "2.7.1",
    "MetadataRightsList": {
      "Rights": {
        "SchemeURI": "https://spdx.org/licenses/",
        "RightsIdentifierScheme": "SPDX",
        "RightsIdentifier": "CC0-1.0",
        "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
        "RightsName": "Creative Commons Zero v1.0 Universal",
        "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions"
      }
    },
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/DE2/NACS/PT1S",
      "NamingAuthority": "NASA",
      "ResourceType": "NumericalData",
      "ResourceHeader": {
        "ResourceName": "DE 2 1-sec NACS Temperature and Composition data",
        "AlternateName": [
          "Dynamics Explorer 2 NACS data",
          "DE-B NACS data"
        ],
        "DOI": "https://doi.org/10.48322/j8kp-5y58",
        "ReleaseDate": "2025-12-04T13:29:08Z",
        "RevisionHistory": {
          "RevisionEvent": [
            {
              "ReleaseDate": "2021-04-27T15:38:11",
              "Note": "Only known prior ReleaseDate of the metadata"
            },
            {
              "ReleaseDate": "2023-07-30T12:34:56.789",
              "Note": "Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727"
            },
            {
              "ReleaseDate": "2025-09-04T12:34:56.789",
              "Note": "Revised ObservedRegion. JMW"
            },
            {
              "ReleaseDate": "2025-10-02T15:11:48Z",
              "Note": "Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB"
            },
            {
              "ReleaseDate": "2025-12-04T13:29:08Z",
              "Note": "Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB"
            }
          ]
        },
        "Description": "This data set containss, at 1-sec resolution, the neutral temperature and the densities (and % error) of O, N2, He, N, and Ar from the Neutral Atmosphere Composition Spectrometer (NACS) flown on DE 2. Composition data are most reliable at altitudes less than 500 km. Data are available in ASCII from nssdcftp and in CDF format from CDAWeb (as well as CDAWeb plots and lists).",
        "Acknowledgement": "Please acknowledge the NACS Principal Investigator, Dr. George Carignan",
        "PublicationInfo": {
          "Authors": "Carignan, George, R.; Candey, Robert, M.",
          "PublicationDate": "2023-01-01T00:00:00",
          "PublishedBy": "Space Physics Data Facility"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/George.R.Carignan",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Robert.M.Candey",
            "Role": "GeneralContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Lee.Frost.Bargatze",
            "Role": "MetadataContact"
          }
        ],
        "InformationURL": {
          "Name": "Readme file at SPDF",
          "URL": "https://spdf.gsfc.nasa.gov/pub/data/de/de2/neutral_gas_nacs/00readme.txt"
        },
        "PriorID": "spase://VSPO/NumericalData/DE2/NACS/PT1S"
      },
      "AccessInformation": [
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb",
          "Availability": "Online",
          "AccessRights": "Open",
          "RightsList": {
            "Rights": {
              "SchemeURI": "https://spdx.org/licenses/",
              "RightsIdentifierScheme": "SPDX",
              "RightsIdentifier": "CC0-1.0",
              "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
              "RightsName": "Creative Commons Zero v1.0 Universal",
              "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
            }
          },
          "AccessURL": [
            {
              "Name": "FTPS from SPDF (not with most browsers)",
              "URL": "ftps://spdf.gsfc.nasa.gov/pub/data/de/de2/neutral_gas_nacs/",
              "Description": "For ftp retrieval of daily CDF files"
            },
            {
              "Name": "HTTPS from SPDF",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/de/de2/neutral_gas_nacs/",
              "Description": "In CDF via HTTP from CDAWeb"
            }
          ],
          "Format": "CDF",
          "DataExtent": {
            "Quantity": "600",
            "Units": "KB",
            "Per": "P1D"
          },
          "Acknowledgement": "Please acknowledge the NACS Principal Investigator, Dr. George Carignan and the Space Physics Data Facility at NASA/GSFC"
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb",
          "Availability": "Online",
          "AccessRights": "Open",
          "RightsList": {
            "Rights": {
              "SchemeURI": "https://spdx.org/licenses/",
              "RightsIdentifierScheme": "SPDX",
              "RightsIdentifier": "CC0-1.0",
              "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
              "RightsName": "Creative Commons Zero v1.0 Universal",
              "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
            }
          },
          "AccessURL": {
            "Name": "CDAWeb",
            "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=DE2_NEUTRAL1S_NACS&index=sp_phys",
            "ProductKey": "DE2_NEUTRAL1S_NACS",
            "Description": "For CDAWeb subset, plot and list capabilities"
          },
          "Format": "Text",
          "DataExtent": {
            "Quantity": "100",
            "Units": "KB",
            "Per": "PT1H"
          },
          "Acknowledgement": "Please acknowledge the NACS Principal Investigator, Dr. George Carignan, and the Space Physics Data Facility at NASA/GSFC"
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb",
          "Availability": "Online",
          "AccessRights": "Open",
          "RightsList": {
            "Rights": {
              "SchemeURI": "https://spdx.org/licenses/",
              "RightsIdentifierScheme": "SPDX",
              "RightsIdentifier": "CC0-1.0",
              "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
              "RightsName": "Creative Commons Zero v1.0 Universal",
              "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
            }
          },
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://cdaweb.gsfc.nasa.gov/hapi",
            "Style": "HAPI",
            "ProductKey": "DE2_NEUTRAL1S_NACS",
            "Description": "Web Service to this product using the HAPI interface."
          },
          "Format": "CSV",
          "Acknowledgement": "Please acknowledge the NACS Principal Investigator, Dr. George Carignan, and the Space Physics Data Facility at NASA/GSFC"
        }
      ],
      "ProcessingLevel": "Calibrated",
      "InstrumentID": "spase://SMWG/Instrument/DynamicsExplorer2/NACS",
      "MeasurementType": "NeutralGas",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1981-08-08T00:00:00",
          "StopDate": "1983-02-15T00:00:00"
        },
        "Cadence": "PT1S"
      },
      "ObservedRegion": [
        "Earth.NearSurface.Thermosphere",
        "Earth.NearSurface.Atmosphere",
        "Earth.NearSurface.AuroralRegion",
        "Earth.NearSurface",
        "Earth.NearSurface.Ionosphere",
        "Earth.NearSurface.PolarCap"
      ]
    }
  }
}