{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xsi:schemaLocation": "http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_6_1.xsd",
    "_Note": "Nodes prefixed with a _ are not valid SPASE, but are included for debugging. Values prefixed with a x_ are not valid SPASE but may considered for addition for completeness.",
    "Version": "2.6.1",
    "_MasterURL": "https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/voyager1_1hr_mag_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": null,
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "hourly average interplanetary magnetic field",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "voyager1_1hr_mag",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": "This data set includes the Voyager spacecraft number (1 or 2), the date-time in decimal year (90.00000 is day 1 of 1990), the magnetic field strength F1 computed from high-resolution magnitudes, the elevation and azimuth angles (degrees) in heliographic (RTN) coordinates, and the magnetic field strength F2 computed from hour averages of the components. The vector components of B can be computed from F2 and the two angles. Elevation angle is the latitude angle above or below the solar equatorial plane, and azimuth angle is in the direction orbital motion around the Sun from the projection of the Sun-to-spacecraft axis into the solar equatorial plane. The Voyager MAG experiment and coordinates are further described in the following publication:  Behannon, K.W., M.H. Acuna, L.F. Burlaga, R.P. Lepping, N.F. Ness, and F.M. Neubauer, Magnetic-Field Experiment for Voyager-1 and Voyager-2, Space Science Reviews, 21 (3), 235-257, 1977...At the time of experiment proposal, it was expected that the required accuracy of the measurements would be 0.1 nT, determined by the combined noise of the sensors and the spacecraft field. The spacecraft magnetic field at the outboard magnetic field sensor, referred to as the primary unit, was expected to be 0.2 nT and highly variable, consistent with current estimates. Hence, the dual magnetometer design (Ness et al., 1971, 1973; Behannon et al. 1977). ..At distances > 40 AU, the heliospheric magnetic fields are generally much weaker than 0.4 nT; the average magnetic field strength near 40 AU and 85 AU is about 0.15 nT and 0.05 nT, respectively. The use of roll calibrations lasting about 6 hours permits determination of the effective zero levels for the two independent magnetic axes that are perpendicular to the roll axis (which is nearly parallel to the radius vector to the Sun) at intervals of about 3 months. There is no roll calibration for the third magnetic axis. Comparison of the two derived magnetic vectors from the two magnetometers permits validation of the primary magnetometer data with an accuracy of 0.02 to 0.05 nT. A discussion of the uncertainties that must be considered when using these data is given in the Appendix of Burlaga et al. [1994] and in Appendix A of Burlaga et al. [2002]. ..References: ..Behannon, K.W., M.H. Acuna, L.F. Burlaga, R.P. Lepping, N.F. Ness, and F.M. Neubauer, Magnetic-Field Experiment for Voyager-1 and Voyager-2, Space Science Reviews, 21 (3), 235-257, 1977. ..Burlaga, L.F., Merged interaction regions and large-scale magnetic field fluctuations during 1991 - Voyager-2 observations, J. Geophys. Res., 99 (A10), 19341-19350, 1994. ..Burlaga, L.F., N.F. Ness, Y.-M. Wang, and N.R. Sheeley Jr., Heliospheric magnetic field strength and polarity from 1 to 81 AU during the ascending phase of solar cycle 23, J. Geophys. Res., 107 (A11), 1410, 2002. ..Ness, N., K.W. Behannon, R. Lepping, and K.H. Schatten, J. Geophys. Res., 76, 3564, 1971. ..Ness et al., 1973At distances > 40 AU, the heliospheric magnetic fields are generally much weaker than 0.4 nT; the average magnetic field strength near 40 AU and 85 AU is about 0.15 nT and 0.05 nT, respectively. The use of roll calibrations lasting  about 6 hours permits determination of the effective zero levels for the two independent magnetic axes that are perpendicular to the roll axis (which is nearly parallel to the radius vector to the Sun) at intervals of about 3 months. There is no roll calibration for the third magnetic axis. Comparison of the two derived magnetic vectors from the two magnetometers permits validation of the primary magnetometer data with an accuracy of 0.02 to 0.05 nT. A discussion of the uncertainties that must be considered when using these data is given in the Appendix of Burlaga et al. [1994] and in Appendix A of Burlaga et al. [2002].",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "Acknowledgement": " Please acknowledge the Principal Investigator, Norman F. Ness of the Bartol Research Institute, University of Delaware, and the NASA National Space Science Data Center (NSSDC) for usage of data from this site in publications and presentations.",
        "_Acknowledgement": "Source: Master/CDFglobalAttributes/Acknowledgement",
        "_Rights": {
          "Name": "SPDX",
          "Description": "Creative Commons Zero v1.0 Universal",
          "URL": "https://spdx.org/licenses/CC0-1.0.html",
          "SchemeURI": "https://spdx.org/licenses/"
        }
      },
      "ProviderResourceName": "VOYAGER1",
      "Caveats": " ",
      "_Caveats": "Source: Master/CDFglobalAttributes/Rules_of_use",
      "DOI": null,
      "_DOI": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json",
      "AccessInformation": [
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Adam Szabo at NASA GSFC",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/voyager/voyager1/magnetic_fields_cdaweb/mag_1hr",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "voyager1_1hr_mag_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "VOYAGER1_1HR_MAG"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Adam Szabo at NASA GSFC",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/voyager/voyager1/magnetic_fields_cdaweb/mag_1hr",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "voyager1_1hr_mag_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "VOYAGER1_1HR_MAG"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Adam Szabo at NASA GSFC",
          "Format": [
            "CDF",
            "CSV",
            "GIF",
            "NetCDF",
            "PNG",
            "PS",
            "PDF",
            "XML",
            "x_Script.IDL",
            "x_Script.Python",
            "Text.ASCII",
            "x_WAV"
          ],
          "AccessURL": {
            "Name": "CDAWeb Web Service",
            "URL": "https://cdaweb.gsfc.nasa.gov/WebServices/",
            "Style": "WebService",
            "Description": "Instructions for using web services to access this dataset an other other metadata and options for CDAWeb datasets. The ProductKey here corresponds to the query parameter 'dataset' in the tables at the AccessURL in a dataset-related request can be made.",
            "ProductKey": "VOYAGER1_1HR_MAG"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Adam Szabo at NASA GSFC",
          "Format": [
            "CDF",
            "GIF",
            "PDF",
            "Text.ASCII",
            "x_WAV"
          ],
          "AccessURL": {
            "Name": "CDAWeb Web Service user interface",
            "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=VOYAGER1_1HR_MAG",
            "Style": "WebService",
            "ProductKey": "VOYAGER1_1HR_MAG",
            "Description": "Web service user interface for this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Adam Szabo at NASA GSFC",
          "Format": [
            "x_Script.IDL",
            "x_Script.Python"
          ],
          "AccessURL": {
            "Name": "CDAWeb Python Script",
            "URL": "https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/VOYAGER1_1HR_MAG/clientLibraryExample/",
            "ProductKey": "VOYAGER1_1HR_MAG",
            "Style": "WebService",
            "Description": "Web service that generates a Python script to access this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/SSCWeb. Please also acknowledge the data producer: Adam Szabo at NASA GSFC",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=VOYAGER1_1HR_MAG",
            "ProductKey": "VOYAGER1_1HR_MAG",
            "Style": "x_Visualization",
            "Description": "Web Service to this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Adam Szabo at NASA GSFC",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=VOYAGER1_1HR_MAG",
            "Style": "HAPI",
            "ProductKey": "VOYAGER1_1HR_MAG",
            "Description": "Web Service to this product using the HAPI interface."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Adam Szabo at NASA GSFC",
          "Format": [
            "x_Script.IDL",
            "x_Script.Javascript",
            "x_Script.MATLAB",
            "x_Script.Python",
            "x_Script.Autoplot",
            "x_Script.curl",
            "x_Script.wget"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Script in Multiple Languages",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=VOYAGER1_1HR_MAG&return=script",
            "Style": "HAPI",
            "ProductKey": "VOYAGER1_1HR_MAG",
            "Description": "Web Service user interface that generates scripts in IDL, Javascript, MATLAB, Python, Autoplot, curl, wget to access this product. See https://hapi-server.org/servers/api for the API."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: Adam Szabo at NASA GSFC",
          "Format": [
            "PNG",
            "PDF",
            "SVG"
          ],
          "AccessURL": {
            "Name": "HAPI visualizations",
            "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=VOYAGER1_1HR_MAG&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "VOYAGER1_1HR_MAG",
            "Description": "Web Service that generates plots. See https://hapi-server.org/plot/ for the API."
          }
        }
      ],
      "_AccessInformation": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1990-01-01T17:00:00Z",
          "StopDate": "1990-12-31T08:59:59Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop",
        "Cadence": "PT1H0.15S",
        "_Cadence": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/voyager/voyager1/magnetic_fields_cdaweb/mag_1hr/1990/voyager1_1hr_mag_19900101_v01.cdf. The most common cadence, 3600150 [ms] = PT1H0.15S, occurred for 32.2684% of the 101 timesteps. "
      },
      "Keyword": [
        "Voyager 1 (from all.xml/observatory/description/@short)",
        "TRIAXIAL FLUXGATE MAGNETOMETER (from all.xml/instrument/description/@short)",
        "Space Physics (from Master/CDFglobalAttributes/Discipline)",
        "Interplanetary Studies (from Master/CDFglobalAttributes/Discipline)",
        "Solar Physics (from Master/CDFglobalAttributes/Discipline)",
        "Heliospheric Physics (from Master/CDFglobalAttributes/Discipline)",
        "VOYAGER1 (from Master/CDFglobalAttributes/Source_name)",
        "Voyager 1 (from Master/CDFglobalAttributes/Source_name)",
        "1HR (from Master/CDFglobalAttributes/Data_type)",
        "1 hour resolution (from Master/CDFglobalAttributes/Data_type)",
        "MAG (from all.xml/instrument/@ID)"
      ],
      "ObservedRegion": [
        "Heliosphere.Heliosheath",
        "Saturn",
        "Saturn.Tethys",
        "Jupiter.Ganymede",
        "Heliosphere.Outer",
        "Jupiter.Io",
        "Saturn.Magnetosphere",
        "Saturn.Titan",
        "Jupiter",
        "Jupiter.Callisto",
        "Heliosphere.NearEarth",
        "Saturn.Rhea",
        "Saturn.Mimas",
        "Jupiter.Europa",
        "Jupiter.Magnetosphere",
        "Heliosphere"
      ],
      "_ObservedRegion": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json",
      "ProcessingLevel": null,
      "_ProcessingLevel": "Processing level is not available in the master file; it should be there instead of, say, https://github.com/rweigel/cdawmeta-spase/blob/main/ProcessingLevel.json",
      "InstrumentID": null,
      "MeasurementType": null,
      "Parameter2": [
        {
          "Name": "Time",
          "ParameterKey": "Epoch",
          "Description": "CATDESC: 'Time, beginning of interval'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.'",
          "Units": "ms",
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Spacecraft",
          "ParameterKey": "Spacecraft",
          "Description": "Master CDF CATDESC: 'Spacecraft id, 1 for voyager1, 2 for voyager2'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -128
        },
        {
          "Name": "Decimal Year",
          "ParameterKey": "Decimal_Year",
          "Description": "Master CDF CATDESC: 'Decimal Year (90.00000 is at the start of day 001 for year 1990).'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " "
        },
        {
          "Name": "F1 Magnitude",
          "ParameterKey": "F1Mag",
          "Description": "Master CDF CATDESC: 'Magnetic field strength from hourly average of high-resolution magnitudes'. Master CDF VAR_NOTES: 'This is the hourly time average of magnitudes from high resolution data. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nT",
          "FillValue": 999.0
        },
        {
          "Name": "elevation angle",
          "ParameterKey": "elevation",
          "Description": "Master CDF CATDESC: 'The elevation angle  in heliographic (RTN) coordinates'. Master CDF VAR_NOTES: ' This is the latitude angle above or below the solar equatorial plane. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "degrees ",
          "FillValue": 999.0
        },
        {
          "Name": "azimuthal angle",
          "ParameterKey": "azimuth",
          "Description": "Master CDF CATDESC: 'The azimuthal angle in heliographic (RTN) coordinates'. Master CDF VAR_NOTES: ' This is the longitude angle in the direction of orbital motion around the Sun from the Sun-to-spacecraft direction.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "degrees",
          "FillValue": 999.0
        },
        {
          "Name": "F2 Magnitude",
          "ParameterKey": "F2Mag",
          "Description": "Master CDF CATDESC: 'Magnetic field strength from magnitude of the hourly averaged vector field'. Master CDF VAR_NOTES: 'The vector components are computed from F2mag and the two angles for elevation (latitude) and azimuth (longitude). '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nT",
          "FillValue": 999.0
        }
      ]
    }
  }
}