{
  "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/Voyager1/MAGandPLS/PT1H",
      "NamingAuthority": "NASA",
      "ResourceType": "NumericalData",
      "ResourceHeader": {
        "ResourceName": "Voyager 1 hourly merged magnetic field and plasma data",
        "DOI": "https://doi.org/10.48322/041p-cv36",
        "ReleaseDate": "2025-12-04T13:32:30Z",
        "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": "2025-10-03T11:24:17Z",
              "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": "2025-12-04T13:32:30Z",
              "Note": "Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB"
            }
          ]
        },
        "Description": "This is an hourly resolution, merged magnetic field and plasma data set created at NSSDC for COHOWeb. Magnetic field vectors and plasma flow direction angles are given in RTN coordinates. Spacecraft position data are given in Heliographic inertial (HGI coordinates).",
        "Acknowledgement": "Please acknowledge N.F. Ness (P.I.) and L. Burlaga for magnetic field data and J. Richardson (P.I.) for plasma data, and NSSDC or GSFC-SPDF",
        "PublicationInfo": {
          "Authors": "Ness, Norman, F.; Richardson, John, D.; Burlaga, Leonard, F.; Papitashvili, Natalia, E.",
          "PublicationDate": "2023-01-01T00:00:00",
          "PublishedBy": "Space Physics Data Facility"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Norman.F.Ness",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/John.D.Richardson",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Leonard.F.Burlaga",
            "Role": "CoInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Natalia.E.Papitashvili",
            "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/voyager/voyager1/merged/vy1mgd.txt"
        },
        "PriorID": [
          "spase://VHO/NumericalData/Voyager1/MAGandPLS/PT1H",
          "spase://VSPO/NumericalData/Voyager1/MAGandPLS/PT1H"
        ]
      },
      "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/voyager/voyager1/merged/",
              "Description": "for annual files via ftp"
            },
            {
              "Name": "HTTPS from SPDF",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/voyager/voyager1/merged/",
              "Description": "In CDF via HTTP from SPDF"
            },
            {
              "Name": "CDAWeb",
              "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=VOYAGER1_COHO1HR_MERGED_MAG_PLASMA&index=sp_phys",
              "ProductKey": "VOYAGER1_COHO1HR_MERGED_MAG_PLASMA",
              "Description": "For CDAWeb subset,plot and list capabilities"
            },
            {
              "Name": "COHOWeb plots and lists",
              "URL": "https://omniweb.gsfc.nasa.gov/coho/form/voyager1.html",
              "Description": "Voyager 1-specific page for plots and lists"
            },
            {
              "Name": "COHOweb top page",
              "URL": "https://omniweb.gsfc.nasa.gov/coho/",
              "Description": "Plots, lists, scatter plots, regressions, distributions, means, etc."
            }
          ],
          "Format": "Text",
          "DataExtent": {
            "Quantity": "1",
            "Units": "MB",
            "Per": "P1Y"
          },
          "Acknowledgement": "Please acknowledge N.F. Ness (P.I.) and L. Burlaga for magnetic field data and J. Richardson (P.I.) for plasma data, and NSSDC or GSFC-SPDF"
        },
        {
          "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": "VOYAGER1_COHO1HR_MERGED_MAG_PLASMA",
            "Description": "Web Service to this product using the HAPI interface."
          },
          "Format": "CSV",
          "Acknowledgement": "Please acknowledge N.F. Ness (P.I.) and L. Burlaga for magnetic field data and J. Richardson (P.I.) for plasma data, and NSSDC or GSFC-SPDF"
        }
      ],
      "InstrumentID": [
        "spase://SMWG/Instrument/Voyager1/MAG",
        "spase://SMWG/Instrument/Voyager1/PLS"
      ],
      "MeasurementType": [
        "MagneticField",
        "ThermalPlasma"
      ],
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1977-09-07T00:00:00",
          "StopDate": "2006-12-31T00:00:00",
          "Note": "Plasma data end on day 327, Nov. 22, of 1994."
        },
        "Cadence": "PT1H"
      },
      "ObservedRegion": [
        "Heliosphere.Outer",
        "Heliosphere.Heliosheath"
      ],
      "Parameter": [
        {
          "Name": "Year",
          "ParameterKey": "Column1",
          "Description": "Four digit Year",
          "Cadence": "PT1H",
          "FillValue": "999.9999",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Day",
          "ParameterKey": "Column2",
          "Description": "Decimal Day of Year",
          "Cadence": "PT1H",
          "FillValue": "999.9999",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Hour",
          "ParameterKey": "Column3",
          "Description": "Hour",
          "Cadence": "PT1H",
          "FillValue": "999.9999",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "V1 radial distance",
          "ParameterKey": "Column04",
          "Description": "Heliocentric radial distance of Voyager 1 in AU",
          "Cadence": "PT1H",
          "Units": "AU",
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "V1 latitude",
          "ParameterKey": "Column05",
          "Description": "Heliographic Inertial elevation angle of Voyager 1 in deg",
          "Cadence": "PT1H",
          "Units": "deg",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Spherical",
            "CoordinateSystemName": "HGI"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "V1 longitude",
          "ParameterKey": "Column06",
          "Description": "Heliographic Inertial azimuthal angle of Voyager 1 in deg",
          "Cadence": "PT1H",
          "Units": "deg",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Spherical",
            "CoordinateSystemName": "HGI"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Average Field Magnitude",
          "ParameterKey": "Column07",
          "Description": "Hourly average of fine time scale magnetic field magnitudes",
          "Cadence": "PT1H",
          "Units": "nT",
          "FillValue": "999.999",
          "Field": {
            "Qualifier": "Magnitude",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Magnitude of Average Field Vector",
          "ParameterKey": "Column08",
          "Description": "Magnitude of vector formed from hourly averages of fine time scale magnetic field components",
          "Cadence": "PT1H",
          "Units": "nT",
          "FillValue": "999.999",
          "Field": {
            "Qualifier": "Magnitude",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Magnetic Field Vector",
          "Description": "Hourly averages of RTN components of fine time scale magnetic field vectors",
          "Cadence": "PT1H",
          "Units": "nT",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "RTN"
          },
          "Structure": {
            "Size": "3",
            "Description": "R,T,N components",
            "Element": [
              {
                "Name": "R component",
                "Qualifier": "Component.I",
                "Index": "1",
                "ParameterKey": "Column09"
              },
              {
                "Name": "T component",
                "Qualifier": "Component.J",
                "Index": "2",
                "ParameterKey": "Column10"
              },
              {
                "Name": "N component",
                "Qualifier": "Component.K",
                "Index": "3",
                "ParameterKey": "Column11"
              }
            ]
          },
          "FillValue": "999.999",
          "Field": {
            "Qualifier": "Vector",
            "FieldQuantity": "Magnetic"
          }
        },
        {
          "Name": "Flow speed",
          "ParameterKey": "Column12",
          "Description": "Hourly averaged solar wind plasma flow speed",
          "Cadence": "PT1H",
          "Units": "km/s",
          "FillValue": "9999.9",
          "Particle": {
            "ParticleType": "Proton",
            "Qualifier": "Average",
            "ParticleQuantity": "FlowSpeed"
          }
        },
        {
          "Name": "Flow elevation angle",
          "ParameterKey": "Column13",
          "Description": "Hourly averaged solar wind plasma flow elevation angle",
          "Cadence": "PT1H",
          "Units": "deg",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Spherical",
            "CoordinateSystemName": "RTN"
          },
          "FillValue": "9999.9",
          "Particle": {
            "ParticleType": "Proton",
            "Qualifier": "DirectionAngle.ElevationAngle",
            "ParticleQuantity": "FlowVelocity"
          }
        },
        {
          "Name": "Flow azimuth angle",
          "ParameterKey": "Column14",
          "Description": "Hourly averaged solar wind plasma flow azimuthal angle",
          "Cadence": "PT1H",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Spherical",
            "CoordinateSystemName": "RTN"
          },
          "FillValue": "9999.9",
          "Particle": {
            "ParticleType": "Proton",
            "Qualifier": "DirectionAngle.AzimuthAngle",
            "ParticleQuantity": "FlowVelocity"
          }
        },
        {
          "Name": "Density",
          "ParameterKey": "Column15",
          "Description": "Hourly averaged solar wind plasma density",
          "Cadence": "PT1H",
          "Units": "n/cc",
          "FillValue": "99.99999",
          "Particle": {
            "ParticleType": "Proton",
            "Qualifier": "Average",
            "ParticleQuantity": "NumberDensity"
          }
        },
        {
          "Name": "Temperature",
          "ParameterKey": "Column16",
          "Description": "Hourly averaged solar wind plasma temperature",
          "Cadence": "PT1H",
          "Units": "degK",
          "FillValue": "9999999.",
          "Particle": {
            "ParticleType": "Proton",
            "Qualifier": "Average",
            "ParticleQuantity": "Temperature"
          }
        }
      ]
    }
  }
}