{
  "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/CNOFS/VEFI/Lightning/PT0.5S",
      "NamingAuthority": "NASA",
      "ResourceType": "NumericalData",
      "ResourceHeader": {
        "ResourceName": "CNOFS VEFI 500-msec Optical Lightning Data",
        "DOI": "https://doi.org/10.48322/pv2n-aj92",
        "ReleaseDate": "2025-12-04T13:29:03Z",
        "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": "2025-10-02T15:11:47Z",
              "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": "2025-12-04T13:29:03Z",
              "Note": "Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB"
            }
          ]
        },
        "Description": "This data set contains the low rate data from the C/NOFS Vector Electric Field Instrument (VEFI) lightning detector during nighttime passes of the satellite along its low inclination (13 degree) orbit and within the altitude domain defined by the satellite's perigee and apogee of 401 km and 867 km, respectively. Two photodiodes measure white light irradiance at 2 Hz in 7 threshold values and in 2 look directions (north and south). Data are at 0.5-sec resolution. The lightning detector data may be used to identify a possible relationship between the occurrence of lightning and the occurrence of Spread-F caused, deep density dropouts in the ionosphere. Reference: Jacobson et al, J Atm Ocean Tech, 2011, doi:10.1175/JTECH-D-11-00047.1",
        "Acknowledgement": "the GSFC SPDF Team",
        "PublicationInfo": {
          "Authors": "Pfaff, Robert, F.",
          "PublicationDate": "2023-01-01T00:00:00",
          "PublishedBy": "Space Physics Data Facility"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Robert.F.Pfaff",
            "Role": "GeneralContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Lee.Frost.Bargatze",
            "Role": "MetadataContact"
          }
        ],
        "InformationURL": {
          "Name": "VEFI Data Products",
          "URL": "https://vefi.gsfc.nasa.gov/vefi/dataproducts.html"
        },
        "PriorID": "spase://VSPO/NumericalData/CNOFS/VEFI/Lightning/PT0.5S"
      },
      "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": "CDAWeb",
            "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=CNOFS_VEFI_LD_500MS&index=sp_phys",
            "ProductKey": "CNOFS_VEFI_LD_500MS",
            "Description": "Plots, lists and files from CDAWeb."
          },
          "Format": "Text",
          "Acknowledgement": "the GSFC SPDF Team"
        },
        {
          "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": "CNOFS_VEFI_LD_500MS",
            "Description": "Web Service to this product using the HAPI interface."
          },
          "Format": "CSV",
          "Acknowledgement": "the GSFC SPDF Team"
        },
        {
          "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/cnofs/vefi/ld_500msec/",
              "Description": "In CDF via FTP from SPDF"
            },
            {
              "Name": "HTTPS from SPDF",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/cnofs//vefi/ld_500msec/",
              "Description": "In CDF via HTTP from SPDF"
            }
          ],
          "Format": "CDF"
        }
      ],
      "ProviderProcessingLevel": "Preliminary Calibrated",
      "InstrumentID": "spase://SMWG/Instrument/CNOFS/VEFI",
      "MeasurementType": "ElectricField",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2008-04-23T00:00:00.000Z",
          "StopDate": "2011-12-31T23:46:00.000Z"
        },
        "Cadence": "PT0.5S"
      },
      "ObservedRegion": "Earth.NearSurface.Ionosphere"
    }
  }
}