{
  "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/wind_3dp_l3-eesa-low-sc-potential_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": null,
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "Wind 3DP EESA Low Level 3 Spacecraft Potential Data",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "wind_3dp_l3-eesa-low-sc-potential",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": "Spacecraft floating potential database from the Wind 3DP EESA Low velocity distribution functions (VDFs)TYPE_LABEL = A_ then the spacecraft potential is most reliableTYPE_LABEL = B_ is the second most reliable type labelTYPE_LABEL = C1 is not reliable and should not be usedTYPE_LABEL = C2 is not reliable and should not be usedSCP_MINF is the easiest and often most reliable estimate for the spacecraft potential",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "Acknowledgement": "We would like to thank the Wind/3DP and WAVES team for their support with data retrieval and calibration.",
        "_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": "https://doi.org/10.3847/1538-4365/aea40c",
            "Name": "Wilson et al. [2026] ApJS",
            "Description": "Spacecraft potential measurements described in",
            "_Note": "URL also in all.xml. Using master."
          }
        ]
      },
      "ProviderResourceName": "Wind 3DP EESA Low Spacecraft Potential Database",
      "Caveats": "Please cite/reference the Wind review paper by L.B. Wilson et al., [2021] in Reviews of Geophysics and work by Wilson et al., [2023] in Astrophys. J. Suppl. when using this data.  There is also an erratum to the Wilson et al., [2023] ApJS, Wilson et al., [2026] ApJS, to which this data refers.",
      "_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: L.B. Wilson III at NASA/GSFC",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/wind/3dp/3dp_l3-eesa-low-sc-potential",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "wind_3dp_l3-eesa-low-sc-potential_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "WIND_3DP_L3-EESA-LOW-SC-POTENTIAL"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: L.B. Wilson III at NASA/GSFC",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/wind/3dp/3dp_l3-eesa-low-sc-potential",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "wind_3dp_l3-eesa-low-sc-potential_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "WIND_3DP_L3-EESA-LOW-SC-POTENTIAL"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: L.B. Wilson III 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": "WIND_3DP_L3-EESA-LOW-SC-POTENTIAL"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: L.B. Wilson III 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=WIND_3DP_L3-EESA-LOW-SC-POTENTIAL",
            "Style": "WebService",
            "ProductKey": "WIND_3DP_L3-EESA-LOW-SC-POTENTIAL",
            "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: L.B. Wilson III 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/WIND_3DP_L3-EESA-LOW-SC-POTENTIAL/clientLibraryExample/",
            "ProductKey": "WIND_3DP_L3-EESA-LOW-SC-POTENTIAL",
            "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: L.B. Wilson III at NASA/GSFC",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=WIND_3DP_L3-EESA-LOW-SC-POTENTIAL",
            "ProductKey": "WIND_3DP_L3-EESA-LOW-SC-POTENTIAL",
            "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: L.B. Wilson III at NASA/GSFC",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=WIND_3DP_L3-EESA-LOW-SC-POTENTIAL",
            "Style": "HAPI",
            "ProductKey": "WIND_3DP_L3-EESA-LOW-SC-POTENTIAL",
            "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: L.B. Wilson III 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=WIND_3DP_L3-EESA-LOW-SC-POTENTIAL&return=script",
            "Style": "HAPI",
            "ProductKey": "WIND_3DP_L3-EESA-LOW-SC-POTENTIAL",
            "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: L.B. Wilson III 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=WIND_3DP_L3-EESA-LOW-SC-POTENTIAL&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "WIND_3DP_L3-EESA-LOW-SC-POTENTIAL",
            "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": "2005-01-01T00:00:44Z",
          "StopDate": "2025-12-31T23:26:27Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop",
        "Cadence": "PT1M37.255S",
        "_Cadence": "Counts based on variable 'EPOCH' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/wind/3dp/3dp_l3-eesa-low-sc-potential/2005/wind_3dp_l3-eesa-low-sc-potential_20050101_v001.cdf. The most common cadence, 97255000000 [ns] = PT1M37.255S, occurred for 27.4214% of the 218 timesteps."
      },
      "Keyword": [
        "Wind Interplanetary Plasma Laboratory (from all.xml/observatory/description/@short)",
        "Three-Dimensional Plasma and Energetic particle investigation for the Wind spacecraft (from all.xml/instrument/description/@short)",
        "Space Physics (from Master/CDFglobalAttributes/Discipline)",
        "Heliospheric Science (from Master/CDFglobalAttributes/Discipline)",
        "WIND (from Master/CDFglobalAttributes/Source_name)",
        "Wind Interplanetary Plasma Laboratory (from Master/CDFglobalAttributes/Source_name)",
        "L3-EESA-LOW-SC-POTENTIAL (from Master/CDFglobalAttributes/Data_type)",
        "Spacecraft potential from 3DP EESA Low (from Master/CDFglobalAttributes/Data_type)",
        "3DP (from all.xml/instrument/@ID)"
      ],
      "ObservedRegion": [
        "Earth.Magnetosphere",
        "Earth.Magnetosheath",
        "Earth.Magnetosphere.Magnetotail",
        "Heliosphere.NearEarth"
      ],
      "_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": "Epoch",
          "ParameterKey": "EPOCH",
          "Description": "CATDESC: 'Epoch (TT2000) time for each data point'. 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": "ns",
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Quality Flag",
          "ParameterKey": "Q_FLAG",
          "Description": "Master CDF CATDESC: 'Quality Flag of VDF shape [4=Best, 2=Good, 0=Bad]'. Master CDF VAR_NOTES: 'Quality flag of electron VDF shape [4 :  TYPE_LABEL = A_ = best; 2 :  TYPE_LABEL = B_ = Good; 0 :  TYPE_LABEL = C1 or C2 = Bad]'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "4=Best,2=Good,0=Bad",
          "FillValue": -1
        },
        {
          "Name": "phi_sc from positive curvature",
          "ParameterKey": "SCP_PCUR",
          "Description": "Master CDF CATDESC: 'The lower and upper bound of the spacecraft potential from positive curvature of f(E)'. Master CDF VAR_NOTES: 'Spacecraft potential [eV] at the time of each 3DP VDF from the positive curvature of the 1D energy distribution, f(E)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "eV",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              2
            ]
          }
        },
        {
          "Name": "phi_sc from inflection point",
          "ParameterKey": "SCP_INFL",
          "Description": "Master CDF CATDESC: 'The lower and upper bound of the spacecraft potential from the point where df/dE changes from negative to positive'. Master CDF VAR_NOTES: 'Spacecraft potential [eV] at the time of each 3DP VDF from the point where df/dE changes from negative to positive'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "eV",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              2
            ]
          }
        },
        {
          "Name": "phi_sc from minimum and maximum of the curvature",
          "ParameterKey": "SCP_MNXC",
          "Description": "Master CDF CATDESC: 'The lower and upper bound of the spacecraft potential from the minimum and maximum of the curvature of f(E)'. Master CDF VAR_NOTES: 'Spacecraft potential [eV] at the time of each 3DP VDF from the minimum and maximum of the curvature of f(E)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "eV",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              2
            ]
          }
        },
        {
          "Name": "phi_sc from local minimum in f(E)",
          "ParameterKey": "SCP_MINF",
          "Description": "Master CDF CATDESC: 'Spacecraft potential defining the lower and upper bound from the local minimum in f(E)'. Master CDF VAR_NOTES: 'Spacecraft potential [eV] at the time of each 3DP VDF from the local minimum in f(E) often seen as a kink-like feature'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'",
          "Units": "eV",
          "FillValue": -1e+31
        }
      ]
    }
  }
}