{
  "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/ts1_l2_efi_eac_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": null,
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "TRACERS Satellite 1 Level 2 Electric Fields Instrument (EFI) AC Electric Field",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "ts1_l2_eac",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": "https://link-springer-com.libproxy.berkeley.edu/article/10.1007/s11214-025-01202-5','AC electric field measurements for SV1.'] ",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "_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://tracers.physics.uiowa.edu/",
            "Name": "UIowa",
            "Description": "Portal at",
            "_Note": "URL also in all.xml. Using master."
          }
        ]
      },
      "Caveats": "https://tracers.physics.uiowa.edu/rules-use",
      "_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: J. W. Bonnell at Space Sciences Laboratory",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/tracers/tracers1/efi/l2/eac",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "ts1_l2_efi_eac_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "TS1_L2_EFI_EAC"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. W. Bonnell at Space Sciences Laboratory",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/tracers/tracers1/efi/l2/eac",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "ts1_l2_efi_eac_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "TS1_L2_EFI_EAC"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. W. Bonnell at Space Sciences Laboratory",
          "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": "TS1_L2_EFI_EAC"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: J. W. Bonnell at Space Sciences Laboratory",
          "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=TS1_L2_EFI_EAC",
            "Style": "WebService",
            "ProductKey": "TS1_L2_EFI_EAC",
            "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: J. W. Bonnell at Space Sciences Laboratory",
          "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/TS1_L2_EFI_EAC/clientLibraryExample/",
            "ProductKey": "TS1_L2_EFI_EAC",
            "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: J. W. Bonnell at Space Sciences Laboratory",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=TS1_L2_EFI_EAC",
            "ProductKey": "TS1_L2_EFI_EAC",
            "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: J. W. Bonnell at Space Sciences Laboratory",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=TS1_L2_EFI_EAC@0",
            "Style": "HAPI",
            "ProductKey": [
              "TS1_L2_EFI_EAC@0",
              "TS1_L2_EFI_EAC@1"
            ],
            "Description": "Web Service to this product using the HAPI interface. Note that HAPI dataset has a collection of parameters, each having the same time stamps. This CDAWeb dataset contains 2 HAPI-type datasets. The @0, @1, ... at the end of the ParameterKeys indicates the index of the CDAWeb dataset. (The dataset index <=> CDF file time variable pairs are @0 => Epoch, @1 => ts1_l2_eac_packet_start.)"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: J. W. Bonnell at Space Sciences Laboratory",
          "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=TS1_L2_EFI_EAC@0&return=script",
            "Style": "HAPI",
            "ProductKey": [
              "TS1_L2_EFI_EAC@0",
              "TS1_L2_EFI_EAC@1"
            ],
            "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. Note that HAPI dataset has a collection of parameters, each having the same time stamps. This CDAWeb dataset contains 2 HAPI-type datasets. The @0, @1, ... at the end of the ParameterKeys indicates the index of the CDAWeb dataset. (The dataset index <=> CDF file time variable pairs are @0 => Epoch, @1 => ts1_l2_eac_packet_start.)"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: J. W. Bonnell at Space Sciences Laboratory",
          "Format": [
            "PNG",
            "PDF",
            "SVG"
          ],
          "AccessURL": {
            "Name": "HAPI visualizations",
            "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=TS1_L2_EFI_EAC@0&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": [
              "TS1_L2_EFI_EAC@0",
              "TS1_L2_EFI_EAC@1"
            ],
            "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": "2025-09-26T01:54:01Z",
          "StopDate": "2026-04-30T23:42:58Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop"
      },
      "Keyword": [
        "Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellite 1 (from all.xml/observatory/description/@short)",
        "Electric Fields Instrument (from all.xml/instrument/description/@short)",
        "Space Physics (from Master/CDFglobalAttributes/Discipline)",
        "Magnetospheric Science (from Master/CDFglobalAttributes/Discipline)",
        "Ionospheric Science (from Master/CDFglobalAttributes/Discipline)",
        "TRACERS1 (from Master/CDFglobalAttributes/Source_name)",
        "Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellite 1 (from Master/CDFglobalAttributes/Source_name)",
        "L2 (from Master/CDFglobalAttributes/Data_type)",
        "Level 2 (from Master/CDFglobalAttributes/Data_type)",
        "EFI (from all.xml/instrument/@ID)"
      ],
      "ObservedRegion": null,
      "_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": "Sample timestamp in UTC",
          "ParameterKey": "Epoch",
          "Description": "CATDESC: 'Sample timestamp in UTC'. 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": "AC Electric Field in TSCS",
          "ParameterKey": "ts1_l2_eac_TSCS",
          "Description": "Master CDF CATDESC: 'AC Electric Field in TSCS'. Master CDF VAR_NOTES: 'Spin-plane electric field vector in the TRACERS spinning frame (TSCS). This frame is defined by X along the +X electric field stacer, Y along the +Y electric field stacer, and Z as the cross product of the X and Y (approximately along the spin-axis of the spacecraft). This AC coupled measurement is sampled at 2048 samples/second and has a resolution of .023 mV/m. Note that there are only 2 components in this vector as the third component cannot be directly inferred and derived for all plasma waves.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "V/m",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              2
            ]
          }
        },
        {
          "Name": "Frequency scale",
          "ParameterKey": "Frequency",
          "Description": "CATDESC: 'Frequency scale for included spectra'. 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": "Hz",
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "EAC_x calibration table",
          "ParameterKey": "ts1_eac_x_calibration",
          "Description": "Master CDF CATDESC: 'Calibration table for AC Electric Field, X component '. Master CDF VAR_NOTES: 'Full real and imaginary frequency response of EAC X antenna for phase and amplitude correction in the frequency domain. To use this table (1) Perform FFT of desired length on each Epoch of waveform data. (2) Interpolate calibration table to obtain transfer function at desired frequency (3) Divide positive FFT frequencies by listed complex calibration values (4) Divide negative FFT frequencies by complex conjugate of listed calibration     values. (5) Perform inverse FFT to return the signal to time domain if desired.  Note: this table significantly amplifies low frequency components'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Frequency.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              2,
              257
            ]
          }
        },
        {
          "Name": "EAC_y calibration table",
          "ParameterKey": "ts1_eac_y_calibration",
          "Description": "Master CDF CATDESC: 'Calibration table for AC Electric Field, Y component '. Master CDF VAR_NOTES: 'Full real and imaginary frequency response of EAC Y antenna for phase and amplitude correction in the frequency domain. To use this table (1) Perform FFT of desired length on each Epoch of waveform data. (2) Interpolate calibration table to obtain transfer function at desired frequency (3) Divide positive FFT frequencies by listed complex calibration values (4) Divide negative FFT frequencies by complex conjugate of listed calibration     values. (5) Perform inverse FFT to return the signal to time domain if desired.  Note: this table significantly amplifies low frequency components'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Frequency.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              2,
              257
            ]
          }
        },
        {
          "Name": "Sample timestamp in UTC",
          "ParameterKey": "ts1_l2_eac_packet_start",
          "Description": "CATDESC: 'Sample timestamp in UTC'. 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": "AC Electric Field X Spectrum",
          "ParameterKey": "ts1_l2_eac_x_spec",
          "Description": "Master CDF CATDESC: 'AC electric field spectrum X component'. Master CDF VAR_NOTES: 'Spectrogram produced from the X component of the AC-coupled electric field. Spectra are performed with a 512 point hanning window, with 7/8 overlap.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts1_l2_eac_packet_start.'",
          "Units": "(V/m)^2/Hz",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              257
            ]
          }
        },
        {
          "Name": "AC Electric Field Y Spectrum",
          "ParameterKey": "ts1_l2_eac_y_spec",
          "Description": "Master CDF CATDESC: 'AC electric field spectrum Y component'. Master CDF VAR_NOTES: 'Spectrogram produced from the Y component of the AC-coupled electric field. Spectra are performed with a 512 point hanning window, with 7/8 overlap.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is ts1_l2_eac_packet_start.'",
          "Units": "(V/m)^2/Hz",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              257
            ]
          }
        }
      ]
    }
  }
}