{
  "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/de1_pwi_or-at_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/DE1/Ephemeris/PT8S",
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "DE-1 PWI: Ephemeris and Attitude Parameters",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "DE_PWI_OR-AT",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": "S. D. Shawhan, D. A. Gurnett, D. L. Odem, R. A. Helliwell, and C. G. Park, The plasma wave and quasi-static electric field instrument (PWI) for Dynamics Explorer-A, Space Sci. Instrumen., 5, 535, 1981.",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "Acknowledgement": "Users of the DE-1 PWI data are encouraged to acknowledge NASA CDAWeb and The University of Iow as the source of the data in any publication.",
        "_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/"
        },
        "InformationURL": [
          {
            "URL": "http://space.physics.uiowa.edu/plasma-wave/de/",
            "Name": "University of Iowa DE-1 PWI Page",
            "Description": "More information on the DE-1 Plama Wave Investigation is available at the University of Iowa DE-1 PWI Page",
            "_Note": "URL also in all.xml. Using master."
          },
          {
            "Name": "The University of Iowa DE-1 PWI Page",
            "URL": "http://www-pw.physics.uiowa.edu/de/home.html",
            "Description": "\n            ",
            "Language": "en",
            "_Note": "Source: InformationURL.json"
          }
        ]
      },
      "Caveats": "DE-1 PWI ephemeris and attitude data are open to everyone.  However, users of these data are encouraged to contact the PI institute and the DE-1 PWI website should questions arise.",
      "_Caveats": "Source: Master/CDFglobalAttributes/Rules_of_use",
      "DOI": "https://doi.org/10.48322/wma0-gq05",
      "_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: Donald Gurnett at University Iowa",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/de/de1/orbit/or-at_cdaweb",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "de1_pwi_or-at_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "DE1_PWI_OR-AT"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Donald Gurnett at University Iowa",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/de/de1/orbit/or-at_cdaweb",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "de1_pwi_or-at_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "DE1_PWI_OR-AT"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Donald Gurnett at University Iowa",
          "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": "DE1_PWI_OR-AT"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: Donald Gurnett at University Iowa",
          "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=DE1_PWI_OR-AT",
            "Style": "WebService",
            "ProductKey": "DE1_PWI_OR-AT",
            "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: Donald Gurnett at University Iowa",
          "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/DE1_PWI_OR-AT/clientLibraryExample/",
            "ProductKey": "DE1_PWI_OR-AT",
            "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: Donald Gurnett at University Iowa",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=DE1_PWI_OR-AT",
            "ProductKey": "DE1_PWI_OR-AT",
            "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: Donald Gurnett at University Iowa",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=DE1_PWI_OR-AT",
            "Style": "HAPI",
            "ProductKey": "DE1_PWI_OR-AT",
            "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: Donald Gurnett at University Iowa",
          "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=DE1_PWI_OR-AT&return=script",
            "Style": "HAPI",
            "ProductKey": "DE1_PWI_OR-AT",
            "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: Donald Gurnett at University Iowa",
          "Format": [
            "PNG",
            "PDF",
            "SVG"
          ],
          "AccessURL": {
            "Name": "HAPI visualizations",
            "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=DE1_PWI_OR-AT&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "DE1_PWI_OR-AT",
            "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": "1981-09-16T05:20:12Z",
          "StopDate": "1984-06-28T23:14:11Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop",
        "Cadence": "PT8S",
        "_Cadence": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/de/de1/orbit/or-at_cdaweb/1981/de1_pwi_or-at_19810916_v01.cdf. The most common cadence, 8000000000 [ns] = PT8S, occurred for 98.7261% of the 4185 timesteps. "
      },
      "Keyword": [
        "Dynamics Explorer 1 (from all.xml/observatory/description/@short)",
        "Space Physics (from Master/CDFglobalAttributes/Discipline)",
        "Magnetospheric Science (from Master/CDFglobalAttributes/Discipline)",
        "DE1 (from Master/CDFglobalAttributes/Source_name)",
        "Dynamics Explorer 1 (from Master/CDFglobalAttributes/Source_name)",
        "OR-AT (from Master/CDFglobalAttributes/Data_type)",
        "Orbit-Attitude (from Master/CDFglobalAttributes/Data_type)",
        "PWI (from all.xml/instrument/@ID)"
      ],
      "ObservedRegion": [
        "Earth.Magnetosphere.Plasmasphere",
        "Earth.NearSurface.Ionosphere",
        "Earth.Magnetosphere",
        "Earth.NearSurface.AuroralRegion",
        "Earth.NearSurface.EquatorialRegion",
        "Earth.Magnetosphere.Polar",
        "Earth.NearSurface.PolarCap",
        "Earth.NearSurface"
      ],
      "_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": "spase://SMWG/Instrument/DynamicsExplorer1/Ephemeris",
      "MeasurementType": "Ephemeris",
      "Parameter2": [
        {
          "Name": "Epoch",
          "ParameterKey": "Epoch",
          "Description": "CATDESC: 'NSSDC standard reference time'. 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 (UT)",
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "GEI Velocity",
          "ParameterKey": "GEI_velocity",
          "Description": "Master CDF CATDESC: 'GEI Satallite Velocity Vector'. Master CDF VAR_NOTES: 'GEI (Geocentric Equatorial Inertial) Satallite Velocity Vector (km/sec).  The order of the vector components is v(x), v(y), v(z).'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/sec",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Altitude",
          "ParameterKey": "Altitude",
          "Description": "Master CDF CATDESC: 'Altitude above the spheroid Earth'. Master CDF VAR_NOTES: 'Altitude above a spheroid Earth, not above the geoid'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km",
          "FillValue": -1e+31
        },
        {
          "Name": "Geographic Latitude",
          "ParameterKey": "GLAT",
          "Description": "Master CDF CATDESC: 'Geographic latitude of subsatellite point'. Master CDF VAR_NOTES: 'Geographic latitude of subsatellite point in dgreees'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "Geographic Longitude",
          "ParameterKey": "GLON",
          "Description": "Master CDF CATDESC: 'Geographic longitude of the satellite'. Master CDF VAR_NOTES: 'Geographic longitude of the satellite in dgreees'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "MLT",
          "ParameterKey": "MLT",
          "Description": "Master CDF CATDESC: 'Magnetic Local Time'. Master CDF VAR_NOTES: 'MLT was defined via the conventional Solar Magnetic frame.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "hours",
          "FillValue": -1e+31
        },
        {
          "Name": "L Shell",
          "ParameterKey": "L_Shell",
          "Description": "Master CDF CATDESC: 'McIlwain's shell parameter (L)'. Master CDF VAR_NOTES: 'Distance from the center of the Earth at which the spacecraft's current field line crosses the equatorial plane (model derived).'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "Re",
          "FillValue": -1e+31
        },
        {
          "Name": "Invariant Latitude",
          "ParameterKey": "ILAT",
          "Description": "Master CDF CATDESC: 'Current Spacecraft Field Line Footprint's Geomagnetic Latitude'. Master CDF VAR_NOTES: 'From https://sscweb.gsfc.nasa.gov:  For any point in space one can trace a B-field line to the Earth's surface, assuming it is a centered dipole field. The Geomagnetic latitude of this foot point is labelled as the Invariant Latitude along the entire field line. The dipole L-value is closely related to this invariant latitude; L=1/(Cos(Lat))^2, and physically connotes the distance (in Earth radii) of the 'top of the field line' from Earth center.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "B Magnitude",
          "ParameterKey": "B_Magnitude",
          "Description": "Master CDF CATDESC: 'Magnetic field strength'. Master CDF VAR_NOTES: 'The measured magnetic field strength.  Any descrepency between these data and those provided by the magnetometer instrument's own files should be resolved in favor of the latter.  See 'Magnetic Field Observations on DE-A and -B', W. H. Farthing, et al., Space Science Instrumentation 5 (1981) for more information'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nT",
          "FillValue": -1e+31
        },
        {
          "Name": "B Vector (GEI)",
          "ParameterKey": "GEI_B_vec",
          "Description": "Master CDF CATDESC: 'GEI magnetic field vector, B(x), B(y), B(z)'. Master CDF VAR_NOTES: 'GEI (Geocentric Equatorial Inertial) Magnetic Vector in nanoTesla.  The order of the vector components is B(x), B(y), B(z).  Any descrepency between these data and those provided by the magnetometer instrument's own files should be resolved in favor of the latter.  See 'Magnetic Field Observations on DE-A and -B', W. H. Farthing, et al., Space Science Instrumentation 5 (1981) for more information'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nT",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Orbit Number",
          "ParameterKey": "Orbit_Number",
          "Description": "Master CDF CATDESC: 'Orbit Number '. Master CDF VAR_NOTES: 'The orbit number from PWI archive files. '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -2147483648
        },
        {
          "Name": "GEI Rotation",
          "ParameterKey": "GEI_rotation",
          "Description": "Master CDF CATDESC: '3-by-3 rotation from spacecraft to GEI coordinates.'. Master CDF VAR_NOTES: '3-by-3 rotation matrix for the transformation from spacecraft coordinates to the GEI frame. The order of the elements is [1,1] = X(x), [1,2] = X(y), [1,3] = X(z),  [2,1] = Y(x),  [2,2] = Y(y), [2,3] = Y(z), [3,1] = Z(x), [3,2] = Z(y), and [3,3] = Z(z)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3,
              3
            ]
          }
        },
        {
          "Name": "GEI Position",
          "ParameterKey": "GEI_position",
          "Description": "Master CDF CATDESC: 'Spacecraft Position in GEI coordinates'. Master CDF VAR_NOTES: 'Spacecraft Position in GEI coordinates, the order of the coordinates is X, Y, Z'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "GEI Relative Velocity",
          "ParameterKey": "GEI_rel_vel",
          "Description": "Master CDF CATDESC: 'GEI satellite velocity relative to a rotating atmosphere.'. Master CDF VAR_NOTES: 'GEI (Geocentric Equatorial Inertial) Satellite Velocity Vector (km/sec) relative to the rotatingatmosphere'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/sec",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "GEI Sun Position",
          "ParameterKey": "GEI_sun_pos",
          "Description": "Master CDF CATDESC: 'GEI unit vector from the spacecraft toward the Sun'. Master CDF VAR_NOTES: 'GEI (Geocentric Equatorial Inertial) unit vector toward the Sun.  The order of the components is X, Y, Z'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "Spin Phase Angle",
          "ParameterKey": "Spin_Angle",
          "Description": "Master CDF CATDESC: 'Angle between the Velocity Vector and the Spacecraft x-axis'. Master CDF VAR_NOTES: 'Phase angle of spin measured from the velocity vector to the +x-axis of the spacecraft in degrees'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "degrees",
          "FillValue": -1e+31
        },
        {
          "Name": "SunFlag",
          "ParameterKey": "Sunlight",
          "Description": "Master CDF CATDESC: 'Sunlight/Darkness flag, 0 = Darkness, 1 = Sunlight'. Master CDF VAR_NOTES: 'Sunlight/Darkness: 0 = Darkness, 1 = Sunlight'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -128
        },
        {
          "Name": "Re",
          "ParameterKey": "Re",
          "Description": "Master CDF CATDESC: 'Geocentric radial distance in Earth Radii'. Master CDF VAR_NOTES: 'Geocentric radial distance in Earth Radii. Here 1 Re = 6378.2 km'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "Re",
          "FillValue": -1e+31
        },
        {
          "Name": "Magnetic Latitude",
          "ParameterKey": "MLAT",
          "Description": "Master CDF CATDESC: 'Magnetic Latitude in degrees'. Master CDF VAR_NOTES: 'Magnetic Latitude in dgreees (Derived)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "degrees",
          "FillValue": -1e+31
        }
      ]
    }
  }
}