{
  "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/po_h8_pwi_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/POLAR/PWI/HFWR/25kHz/Interferometry/PT0.000014S",
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "Polar Plasma Wave Instrument, High Frequency Waveform Receiver",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "PO_H8_PWI",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": "Reference:..Gurnett, D.A. et al, The Polar plasma wave instrument, Space Science Reviews, Vol. 71, pp. 597-622, 1995.GURNETT@IOWAVE.physics.uiowa.eduAn FFT on 1024 values was used in calibrating the data; i.e., perform FFT, calibrate in frequency domain, perform inverse FFT to get calibrated time series.Effective Bandwidth is 1.5*delta_f, where delta_f depends on the size of the FFT used to convert to the frequency domain, and delta_t.Coordinate system used:  antenna coordinate system, where the u-axis is offset by -45 degrees from the spacecraft x-axis, the v-axis is offset by -45 degrees from the spacecraft y-axis, and the z-axis is identical to the spacecraft z-axis.This data comes in snapshots of 190902 points distributed among 2 to 6 channels every 9.2 seconds, where the duration of the snapshot is 0.045 seconds.  Since Epoch time is in milliseconds, the times for the data points will not be unique unless the Delta_T (in milliseconds) is added to  the Epoch time for the snapshot.",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "Acknowledgement": " ",
        "_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/plasma-wave/istp/polar/home.html",
            "Name": " ",
            "Description": " ",
            "_Note": "URL also in all.xml. Using master."
          },
          {
            "Name": "Polar Plasma Wave Investigation (PWI) Data and User's Guides",
            "URL": "http://www-pw.physics.uiowa.edu/polar/data.html",
            "Description": "A Polar PWI page is maintained at the University of Iowa with descriptions of receivers, interpretation issues, user's guides, data availability tables, a form for creating summary plots and access to pregenerated dynamic spectrograms.",
            "Language": "en",
            "_Note": "Source: InformationURL.json"
          }
        ]
      },
      "ProviderResourceName": "POLAR PWI HFWR",
      "Caveats": " ",
      "_Caveats": "Source: Master/CDFglobalAttributes/Rules_of_use",
      "DOI": "https://doi.org/10.48322/06zn-yc02",
      "_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: D. Gurnett at U. Iowa",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/polar/pwi/pwi_h8",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "po_h8_pwi_%Y%m%d%H_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "PO_H8_PWI"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: D. Gurnett at U. Iowa",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/polar/pwi/pwi_h8",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "po_h8_pwi_%Y%m%d%H_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "PO_H8_PWI"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: D. Gurnett at U. 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": "PO_H8_PWI"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: D. Gurnett at U. 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=PO_H8_PWI",
            "Style": "WebService",
            "ProductKey": "PO_H8_PWI",
            "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: D. Gurnett at U. 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/PO_H8_PWI/clientLibraryExample/",
            "ProductKey": "PO_H8_PWI",
            "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: D. Gurnett at U. Iowa",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=PO_H8_PWI",
            "ProductKey": "PO_H8_PWI",
            "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: D. Gurnett at U. Iowa",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=PO_H8_PWI",
            "Style": "HAPI",
            "ProductKey": "PO_H8_PWI",
            "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: D. Gurnett at U. 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=PO_H8_PWI&return=script",
            "Style": "HAPI",
            "ProductKey": "PO_H8_PWI",
            "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: D. Gurnett at U. Iowa",
          "Format": [
            "PNG",
            "PDF",
            "SVG"
          ],
          "AccessURL": {
            "Name": "HAPI visualizations",
            "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=PO_H8_PWI&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "PO_H8_PWI",
            "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": "1996-04-04T00:41:55Z",
          "StopDate": "1997-09-14T18:30:56Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop",
        "Cadence": "PT9.2S",
        "_Cadence": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/polar/pwi/pwi_h8/1996/po_h8_pwi_1996040400_v01.cdf. The most common cadence, 9200 [ms] = PT9.2S, occurred for all 116 timesteps. "
      },
      "Keyword": [
        "Polar Plasma Laboratory (from all.xml/observatory/description/@short)",
        "Plasma Wave Instrument (from all.xml/instrument/description/@short)",
        "Space Physics (from Master/CDFglobalAttributes/Discipline)",
        "Magnetospheric Science (from Master/CDFglobalAttributes/Discipline)",
        "POLAR (from Master/CDFglobalAttributes/Source_name)",
        "Polar Plasma Laboratory (from Master/CDFglobalAttributes/Source_name)",
        "H8 (from Master/CDFglobalAttributes/Data_type)",
        "High Resolution Data (from Master/CDFglobalAttributes/Data_type)",
        "PWI (from all.xml/instrument/@ID)"
      ],
      "ObservedRegion": [
        "Earth.NearSurface.Ionosphere",
        "Earth.Magnetosphere",
        "Earth.NearSurface.AuroralRegion",
        "Earth.NearSurface.EquatorialRegion",
        "Earth.NearSurface.Plasmasphere",
        "Earth.Magnetosphere.Polar",
        "Heliosphere.Inner",
        "Earth.NearSurface.PolarCap",
        "Earth.Magnetosphere.RadiationBelt",
        "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/POLAR/PWI",
      "MeasurementType": "Waves.Passive",
      "Parameter2": [
        {
          "Name": "Time",
          "ParameterKey": "Epoch",
          "Description": "CATDESC: 'Time, begin time of HFWR snapshot'. 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": "Delta_T",
          "ParameterKey": "Delta_T",
          "Description": "Master CDF CATDESC: 'Time, time between HFWR points in this snapshot.'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "ms",
          "FillValue": -1e+31
        },
        {
          "Name": "Filter Mode",
          "ParameterKey": "FilterMode",
          "Description": "Master CDF CATDESC: 'Filter Mode (1 = 25 kHz, 2 = 16 kHz, 4 = 2 kHz, 8 = 250 Hz)'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -2147483648
        },
        {
          "Name": "NUM_PTS",
          "ParameterKey": "NUM_PTS",
          "Description": "Master CDF CATDESC: 'Number of points that this snapshot contains in each Channel.'. Master CDF VAR_NOTES: 'NUM_PTS depends upon number of Channels used (2, 3, or 6).'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -2147483648
        },
        {
          "Name": "NUM_FFT",
          "ParameterKey": "NUM_FFT",
          "Description": "Master CDF CATDESC: 'Number of FFTs of size 1024 that were processed for this snapshot'. Master CDF VAR_NOTES: 'NUM_FFT depends upon number of Channels used (2, 3, or 6).'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -2147483648
        },
        {
          "Name": "Gain for HFWR Channel 1 (Eu)",
          "ParameterKey": "Gain1",
          "Description": "Master CDF CATDESC: 'Channel 1 Gain (HFWR) '. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1
        },
        {
          "Name": "Gain for HFWR Channel 2 (Ev+)",
          "ParameterKey": "Gain2",
          "Description": "Master CDF CATDESC: 'Channel 2 Gain (HFWR) '. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1
        },
        {
          "Name": "Gain for HFWR Channel 3 (Ev-)",
          "ParameterKey": "Gain3",
          "Description": "Master CDF CATDESC: 'Channel 3 Gain (HFWR) '. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1
        },
        {
          "Name": "Gain for HFWR M-Field (Bu, Bv, Bz)",
          "ParameterKey": "MGain",
          "Description": "Master CDF CATDESC: 'M Gain (HFWR) '. Master CDF VAR_NOTES: 'Applies to all 3 Magnetic Channels'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1
        },
        {
          "Name": "HFWR Elec. Field Antenna Eu (Channel 1)",
          "ParameterKey": "HFWR_Eu",
          "Description": "Master CDF CATDESC: 'HFWR Elec. Ant. Eu'. Master CDF VAR_NOTES: 'When FFT is applied, Filter Rolls off at 25 kHz'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "mV/M",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              63488
            ]
          }
        },
        {
          "Name": "HFWR Elec. Field Antenna Ev+ (Channel 2)",
          "ParameterKey": "HFWR_Evp",
          "Description": "Master CDF CATDESC: 'HFWR Elec. Ant. Ev+'. Master CDF VAR_NOTES: 'When FFT is applied, Filter Rolls off at 25 kHz'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "mV/M",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              95232
            ]
          }
        },
        {
          "Name": "HFWR Elec. Field Antenna Ev- (Channel 3)",
          "ParameterKey": "HFWR_Evm",
          "Description": "Master CDF CATDESC: 'HFWR Elec. Ant. Ev-'. Master CDF VAR_NOTES: 'When FFT is applied, Filter Rolls off at 25 kHz'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "mV/M",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              95232
            ]
          }
        },
        {
          "Name": "HFWR Mag. Field Antenna Bu (Channel 4)",
          "ParameterKey": "HFWR_Bu",
          "Description": "Master CDF CATDESC: 'HFWR Mag. Ant. Bu'. Master CDF VAR_NOTES: 'When FFT is applied, Filter Rolls off at 25 kHz'. 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": [
              31744
            ]
          }
        },
        {
          "Name": "HFWR Mag. Field Antenna Bv (Channel 5)",
          "ParameterKey": "HFWR_Bv",
          "Description": "Master CDF CATDESC: 'HFWR Mag. Ant. Bv'. Master CDF VAR_NOTES: 'When FFT is applied, Filter Rolls off at 25 kHz'. 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": [
              63488
            ]
          }
        },
        {
          "Name": "HFWR Mag. Field Antenna Bz (Channel 6)",
          "ParameterKey": "HFWR_Bz",
          "Description": "Master CDF CATDESC: 'HFWR Mag. Ant. Bz'. Master CDF VAR_NOTES: 'When FFT is applied, Filter Rolls off at 25 kHz'. 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": [
              31744
            ]
          }
        },
        {
          "Name": "DATA_Q_Eu",
          "ParameterKey": "DATA_Q_Eu",
          "Description": "Master CDF CATDESC: 'Data Q Eu:  0 = OK, 1 = clipped or questionable'. Master CDF VAR_NOTES: 'DATA_Q_Eu = FILLVAL when HFWR_Eu = FILLVAL'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1,
          "Structure": {
            "Size": [
              63488
            ]
          }
        },
        {
          "Name": "DATA_Q_Evp",
          "ParameterKey": "DATA_Q_Evp",
          "Description": "Master CDF CATDESC: 'Data Q Ev+:  0 = OK, 1 = clipped or questionable'. Master CDF VAR_NOTES: 'DATA_Q_Evp = FILLVAL when HFWR_Evp = FILLVAL'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1,
          "Structure": {
            "Size": [
              95232
            ]
          }
        },
        {
          "Name": "DATA_Q_Evm",
          "ParameterKey": "DATA_Q_Evm",
          "Description": "Master CDF CATDESC: 'Data Q Ev-:  0 = OK, 1 = clipped or questionable'. Master CDF VAR_NOTES: 'DATA_Q_Evm = FILLVAL when HFWR_Evm = FILLVAL'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1,
          "Structure": {
            "Size": [
              95232
            ]
          }
        },
        {
          "Name": "DATA_Q_Bu",
          "ParameterKey": "DATA_Q_Bu",
          "Description": "Master CDF CATDESC: 'Data Q Bu:  0 = OK, 1 = clipped or questionable'. Master CDF VAR_NOTES: 'DATA_Q_Bu = FILLVAL when HFWR_Bu = FILLVAL'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1,
          "Structure": {
            "Size": [
              31744
            ]
          }
        },
        {
          "Name": "DATA_Q_Bv",
          "ParameterKey": "DATA_Q_Bv",
          "Description": "Master CDF CATDESC: 'Data Q Bv:  0 = OK, 1 = clipped or questionable'. Master CDF VAR_NOTES: 'DATA_Q_Bv = FILLVAL when HFWR_Bv = FILLVAL'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1,
          "Structure": {
            "Size": [
              63488
            ]
          }
        },
        {
          "Name": "DATA_Q Bz",
          "ParameterKey": "DATA_Q_Bz",
          "Description": "Master CDF CATDESC: 'Data Q Bz:  0 = OK, 1 = clipped or questionable'. Master CDF VAR_NOTES: 'DATA_Q_Bz = FILLVAL when HFWR_Bz = FILLVAL'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1,
          "Structure": {
            "Size": [
              31744
            ]
          }
        }
      ]
    }
  }
}