{
  "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/DE1/PWI/DCEF/PT1S",
      "NamingAuthority": "NASA",
      "ResourceType": "NumericalData",
      "ResourceHeader": {
        "ResourceName": "DE 1 Plasma Waves Instrument (PWI) DC electric field data",
        "AlternateName": [
          "Dynamics Explorer 1 PWI DC electric field data",
          "DE-A PWI DC electric field data"
        ],
        "DOI": "https://doi.org/10.48322/cnpg-th12",
        "ReleaseDate": "2025-12-04T13:29:06Z",
        "RevisionHistory": {
          "RevisionEvent": [
            {
              "ReleaseDate": "2025-05-02T21:14:31Z",
              "Note": "Only known prior ReleaseDate of the metadata"
            },
            {
              "ReleaseDate": "2025-11-14T16:03:08Z",
              "Note": "Added PublicationInfo. 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": "2025-12-04T13:29:06Z",
              "Note": "Added MetadataRightsList. Updated to 2.7.1. ZCB"
            }
          ]
        },
        "Description": "Plasma Waves Instrument DC electric field data",
        "Acknowledgement": "NASA; Donald A. Gurnett",
        "PublicationInfo": {
          "Authors": "Gurnett, Donald A.",
          "PublicationDate": "2025-11-14T16:03:08Z",
          "PublishedBy": "University of California, Los Angeles"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Donald.A.Gurnett",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/James.M.Weygand",
            "Role": "MetadataContact"
          }
        ],
        "InformationURL": {
          "Name": "NSSDC's Master Catalog on the Plasma Wave Instrument",
          "URL": "https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=1981-070A-02",
          "Description": "Introduction to the Plasma Wave Instrument on DE1"
        },
        "PriorID": [
          "spase://VMO/NumericalData/DE1/PWI/DCEF/PT1S",
          "spase://VSPO/NumericalData/DE1/PWI/DCEF/PT1S"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/UCLA/DE1",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "Name": "Plasma Waves Instrument DC electric field data",
          "URL": "http://vmo.igpp.ucla.edu/data1/DE1/PWI/DCEF/",
          "Description": "This URL contains the DE1 PWI DC electric field Data"
        },
        "Format": "Text",
        "Encoding": "ASCII",
        "Acknowledgement": "NASA;Donald.A.Gurnett"
      },
      "ProcessingLevel": "Calibrated",
      "ProviderResourceName": "Plasma Waves Instrument DC electric field",
      "ProviderProcessingLevel": "Level-2",
      "InstrumentID": "spase://SMWG/Instrument/DynamicsExplorer1/PWI",
      "MeasurementType": "Waves.Passive",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1981-09-16T00:00:00",
          "StopDate": "1984-06-24T00:00:00",
          "Note": "Time format in data files is: milliseconds of the day"
        },
        "Cadence": "PT1S"
      },
      "ObservedRegion": [
        "Earth.NearSurface.Ionosphere",
        "Earth.NearSurface.Plasmasphere",
        "Earth.NearSurface.PolarCap"
      ],
      "Caveats": "Flags=NaN",
      "Keyword": [
        "PWI",
        "DCEF",
        "Plasma Waves Instrument",
        "DC electric field",
        "magnetosphere",
        "radiation belt"
      ],
      "Parameter": [
        {
          "Name": "Universal Time",
          "ParameterKey": "Time",
          "Description": "Universal Time columns from left to right are: yeardoy msec in the format of yyddd msec.",
          "Cadence": "PT1S",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "MAG"
          },
          "Structure": {
            "Size": "2",
            "Description": "Universal Time expressed using a 6-column day, month, year, hour, minute, second representation",
            "Element": [
              {
                "Name": "Year Day of Year",
                "Index": "1",
                "ParameterKey": "YearDOY"
              },
              {
                "Name": "Milliseconds",
                "Index": "2",
                "ParameterKey": "MSec"
              }
            ]
          },
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "DE1 Plasma Wave Instrument DC electric field in the perpendicular direction",
          "ParameterKey": "PWI DC electric field in the perpendicular direction",
          "Description": "PWI DC electric field. The component of the electric field measured in the spin plane that is perpendicular to the projection of the local magnetic field on the spin plane, expressed in volts/meter.",
          "Cadence": "PT1S",
          "Units": "V/m",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "MAG"
          },
          "Field": {
            "Qualifier": "Vector",
            "FieldQuantity": "Electric"
          }
        },
        {
          "Name": "DE1 Plasma Wave Instrument DC electric field in the parallel direction",
          "ParameterKey": "PWI DC electric field in the parallel direction",
          "Description": "PWI DC electric field. The component of the electric field measured in the spin plane that is parallel to the projection of the local magnetic field on the spin plane, expressed in volts/meter.",
          "Cadence": "PT1S",
          "Units": "V/m",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "MAG"
          },
          "Field": {
            "Qualifier": "Vector",
            "FieldQuantity": "Electric"
          }
        },
        {
          "Name": "DE1 Plasma Wave Instrument DC electric field Quality",
          "ParameterKey": "PWI DC electric field Quality",
          "Description": "PWI DC electric field. An indication of the quality of the data taken with the Ex antenna.  A value of -1.0 indicates that the corresponding EPAR and EPER could not be determined.",
          "Cadence": "PT1S",
          "Units": "None",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "MAG"
          },
          "Mixed": {
            "MixedQuantity": "Other"
          }
        },
        {
          "Name": "DE1 Plasma Wave Instrument DC electric field in the EZ atenna  direction",
          "ParameterKey": "PWI DC electric field in the EZ atenna  direction",
          "Description": "PWI DC electric field. The average electric field measured by the Ez antenna, expressed in volts/meter.",
          "Cadence": "PT1S",
          "Units": "V/m",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "MAG"
          },
          "Field": {
            "Qualifier": "Vector",
            "FieldQuantity": "Electric"
          }
        },
        {
          "Name": "DE1 Plasma Wave Instrument DC electric field EZ Quality",
          "ParameterKey": "PWI DC electric field EZ Quality",
          "Description": "PWI DC electric field. The standard deviation of the electric field measured by the Ez antenna.  A value of -1.0 indicates that the corresponding EZAVE could not be determined.",
          "Cadence": "PT1S",
          "Units": "None",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "MAG"
          },
          "Mixed": {
            "MixedQuantity": "Other"
          }
        },
        {
          "Name": "DE1 Plasma Wave Instrument Dummy Value",
          "ParameterKey": "PWI DC electric field Dummy",
          "Description": "PWI DC electric field. Dummy Value",
          "Cadence": "PT1S",
          "Units": "None",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "MAG"
          },
          "Mixed": {
            "MixedQuantity": "Other"
          }
        },
        {
          "Name": "DE1 Plasma Wave Instrument DC electric field antenna",
          "ParameterKey": "PWI DC electric field Antenna used for measurement",
          "Description": "PWI DC electric field Antenna used for measurement: EX or EZ or ES or B",
          "Cadence": "PT1S",
          "Units": "None",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "MAG"
          },
          "Mixed": {
            "MixedQuantity": "Other"
          }
        },
        {
          "Name": "DE1 spacecraft position vector inerpolated to 1 sec resolution",
          "ParameterKey": "Position vector",
          "Description": "Location of the spacecraft in magnetic coordinates in units of Re, Re, local time, and latitude",
          "Cadence": "PT1S",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "MAG"
          },
          "Structure": {
            "Size": "4",
            "Element": [
              {
                "Name": "Geocentric Radial distance of spacecraft",
                "Qualifier": "Magnitude",
                "Index": "1",
                "ParameterKey": "GeocentricRadialDistance"
              },
              {
                "Name": "L-Shell",
                "Index": "2",
                "ParameterKey": "L-ShellValue"
              },
              {
                "Name": "MagneticLocalTime",
                "Index": "3",
                "ParameterKey": "MagneticLocalTime"
              },
              {
                "Name": "MagneticLatitude",
                "Index": "4",
                "ParameterKey": "MagneticLatitude"
              }
            ]
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        }
      ]
    }
  }
}