{
  "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_h9_pwi_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/POLAR/PWI/WBR/PT0.000004016S",
      "_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_H9_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 1992 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 1992 or 3984 points every 0.064 seconds.  Duration of a snapshot is less when the instrument is in duty cycle modes.  Since Epoch time is in milliseconds, the times for the data points will not be unique unless the fmsec (fraction of milliseconds) is appended to the Epoch0 time for that point.The frequency filters used for the wideband receiver have a range that limits the calibration.  The following table specifies the range of frequencies for which the calibration is certified.  Outside this range the amplitude values may be in error and should not be used.  (Translation, Filter, Freq Range) (0 kHz, 90 kHz, 7.5 kHz-90.0 kHz) (125 kHz, 90 kHz, 131.9 kHz-214.8 kHz) (250 kHz, 90 kHz, 254.3 kHz-341.2 kHz) (500 kHz, 90 kHz, 504.79 kHz-591.1 kHz) (0 kHz, 10 kHz, 0.035 kHz-11.64 kHz) (0 kHz, 22 kHz, 0.065 kHz-21.59 kHz) (0 kHz, 1-3 kHz, 1.0 kHz-3.0 kHz) (0 kHz, 3-6 kHz, 3.0 kHz-6.0 kHz) ",
        "_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."
          },
          {
            "URL": "http:/www-pw.physics.uiowa.edu/plasma-wave/istp/polar/interpretation.html",
            "_Note": "Source: 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 WBR",
      "Caveats": " ",
      "_Caveats": "Source: Master/CDFglobalAttributes/Rules_of_use",
      "DOI": "https://doi.org/10.48322/ybd2-7a47",
      "_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_h9",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "po_h9_pwi_%Y%m%d%H_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "PO_H9_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_h9",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "po_h9_pwi_%Y%m%d%H_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "PO_H9_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_H9_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_H9_PWI",
            "Style": "WebService",
            "ProductKey": "PO_H9_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_H9_PWI/clientLibraryExample/",
            "ProductKey": "PO_H9_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_H9_PWI",
            "ProductKey": "PO_H9_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_H9_PWI",
            "Style": "HAPI",
            "ProductKey": "PO_H9_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_H9_PWI&return=script",
            "Style": "HAPI",
            "ProductKey": "PO_H9_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_H9_PWI&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "PO_H9_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": "1996-03-25T10:52:30Z",
          "StopDate": "1997-09-16T16:00:07Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop",
        "Cadence": "PT0.064S",
        "_Cadence": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/polar/pwi/pwi_h9/1996/po_h9_pwi_1996032510_v01.cdf. The most common cadence, 64 [ms] = PT0.064S, occurred for 99.9715% of the 7015 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)",
        "H9 (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 WBR 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 WBR points'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "FillValue": -1e+31
        },
        {
          "Name": "Sample rate",
          "ParameterKey": "Sample_rate",
          "Description": "Master CDF CATDESC: 'Sample rate: the rate at which the data is telemetered to the ground.'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "Hz",
          "FillValue": -1e+31
        },
        {
          "Name": "Filter Mode",
          "ParameterKey": "FilterMode",
          "Description": "Master CDF CATDESC: 'Filter Mode: 0-2 = 90 kHz, 3 = 1-3 kHz, 4 = 20 kHz, 5 = 3-6 kHz, 6 = 10-16 kHz, 7 = 10 kHz'. 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": "Data_Mode",
          "ParameterKey": "DATA_MODE",
          "Description": "Master CDF CATDESC: 'Data_Mode (8-bit, 4-bit, or 1-bit compression)'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "bits",
          "FillValue": -1
        },
        {
          "Name": "WBR Ant",
          "ParameterKey": "WBR_Ant",
          "Description": "Master CDF CATDESC: 'WBR Antenna (0=Eu, 1=Ev, 2=Loop, 3=Bu)'. 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": "Gain1 (WBR) ",
          "ParameterKey": "Gain1",
          "Description": "Master CDF CATDESC: 'Gain for WBR values 1-996 of 1992 or 1-1992 of 3984'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "dB",
          "FillValue": -1.0
        },
        {
          "Name": "Gain2 (WBR) ",
          "ParameterKey": "Gain2",
          "Description": "Master CDF CATDESC: 'Gain for WBR values 997-1992 of 1992 or 1993-3984 of 3984'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "dB",
          "FillValue": -1.0
        },
        {
          "Name": "Translation",
          "ParameterKey": "Translation",
          "Description": "Master CDF CATDESC: 'Frequency Offset (0 kHz, 125 kHz, 250 kHz, 500 kHz)'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "FillValue": -2147483648
        },
        {
          "Name": "NumPoints",
          "ParameterKey": "NumPoints",
          "Description": "Master CDF CATDESC: 'Number points that were processed for 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": " "
        },
        {
          "Name": "DATA_QUALITY",
          "ParameterKey": "DATA_QUALITY",
          "Description": "Master CDF CATDESC: 'Data Quality:  0 = OK, 1 = clipped or questionable'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " (0=OK)",
          "FillValue": -1,
          "Structure": {
            "Size": [
              3984
            ]
          }
        },
        {
          "Name": "WBR Elec. Field",
          "ParameterKey": "WBR_Elec",
          "Description": "Master CDF CATDESC: 'WBR Electric Field (mV/M)'. Master CDF VAR_NOTES: ' '. 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": [
              3984
            ]
          }
        },
        {
          "Name": "WBR Mag. Field",
          "ParameterKey": "WBR_Mag",
          "Description": "Master CDF CATDESC: 'WBR Magnetic Field (nT)'. Master CDF VAR_NOTES: ' '. 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": [
              3984
            ]
          }
        }
      ]
    }
  }
}