{
  "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/dmsp-f17_ssies-3_thermal-plasma_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/DMSP_5D-3/F17/SESS/SSIES-3/ThermalPlasma/CDF/PT1S",
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "DMSP thermal plasma data",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "dmsp-f17_ssies-3_thermal-plasma",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": "The Special Sensors-Ions, Electrons, and Scintillation (SSIES) thermal plasma analysis package is a suite of instruments built by the Center for Space Sciences at the University of Texas at Dallas and flown on a number of the DMSP satellites. SSIESS includes a Retarding Potential Analyzer (RPA), Ion Drift meter (IDM), scintillation meter, and Langmuir probe.",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "Acknowledgement": "We gratefully acknowledge the University of Texas Dallas, Center for Space Sciences and the US Air Force for providing the DMSP thermal plasma data",
        "_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": [
          {
            "Name": "DMSP SSIES-3 QUALITY FLAG Document",
            "URL": "https://spdf.gsfc.nasa.gov/pub/data/dmsp/documents/ssies/SSIES-3_qualityflags_Sept2019.pdf",
            "_Note": "URL also in all.xml, master. Using InformationURL.json."
          },
          {
            "Name": "DMSP SSIES-3 Documentation",
            "URL": "https://spdf.gsfc.nasa.gov/pub/data/dmsp/documents/ssies/",
            "_Note": "URL also in all.xml, master. Using InformationURL.json."
          },
          {
            "URL": "https://spdf.gsfc.nasa.gov/pub/data/dmsp/",
            "Name": "data",
            "Description": "DMSP SSIES-3",
            "_Note": "URL also in all.xml. Using master."
          },
          {
            "Name": "Original HDF files",
            "URL": "https://spdf.gsfc.nasa.gov/pub/data/dmsp/dmspf17/ssies/ssies-3rl/thermal-plasma-hdf/",
            "Description": "HDF files used to convert to CDF files at SPDF",
            "_Note": "Source: InformationURL.json"
          },
          {
            "Name": "Thermal Plasma Plots",
            "URL": "https://spdf.gsfc.nasa.gov/pub/data/dmsp/dmspf17/ssies/ssies-3rl/thermal-plasma-plots/",
            "Description": "Single orbit plots of plasma data",
            "_Note": "Source: InformationURL.json"
          }
        ]
      },
      "Caveats": " ",
      "_Caveats": "Source: Master/CDFglobalAttributes/Rules_of_use",
      "DOI": "https://doi.org/10.48322/3skz-xt83",
      "_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: William Hanson, Rod Heelis, Marc Hairston at University of Texas Dallas, Center for Space Sciences",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/dmsp/dmspf17/ssies/ssies-3rl/thermal-plasma-cdf",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "dmsp-f17_ssies-3_thermal-plasma_%Y%m%d%H%M_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "DMSP-F17_SSIES-3_THERMAL-PLASMA"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: William Hanson, Rod Heelis, Marc Hairston at University of Texas Dallas, Center for Space Sciences",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/dmsp/dmspf17/ssies/ssies-3rl/thermal-plasma-cdf",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "dmsp-f17_ssies-3_thermal-plasma_%Y%m%d%H%M_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "DMSP-F17_SSIES-3_THERMAL-PLASMA"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: William Hanson, Rod Heelis, Marc Hairston at University of Texas Dallas, Center for Space Sciences",
          "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": "DMSP-F17_SSIES-3_THERMAL-PLASMA"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: William Hanson, Rod Heelis, Marc Hairston at University of Texas Dallas, Center for Space Sciences",
          "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=DMSP-F17_SSIES-3_THERMAL-PLASMA",
            "Style": "WebService",
            "ProductKey": "DMSP-F17_SSIES-3_THERMAL-PLASMA",
            "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: William Hanson, Rod Heelis, Marc Hairston at University of Texas Dallas, Center for Space Sciences",
          "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/DMSP-F17_SSIES-3_THERMAL-PLASMA/clientLibraryExample/",
            "ProductKey": "DMSP-F17_SSIES-3_THERMAL-PLASMA",
            "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: William Hanson, Rod Heelis, Marc Hairston at University of Texas Dallas, Center for Space Sciences",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=DMSP-F17_SSIES-3_THERMAL-PLASMA",
            "ProductKey": "DMSP-F17_SSIES-3_THERMAL-PLASMA",
            "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: William Hanson, Rod Heelis, Marc Hairston at University of Texas Dallas, Center for Space Sciences",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=DMSP-F17_SSIES-3_THERMAL-PLASMA",
            "Style": "HAPI",
            "ProductKey": "DMSP-F17_SSIES-3_THERMAL-PLASMA",
            "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: William Hanson, Rod Heelis, Marc Hairston at University of Texas Dallas, Center for Space Sciences",
          "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=DMSP-F17_SSIES-3_THERMAL-PLASMA&return=script",
            "Style": "HAPI",
            "ProductKey": "DMSP-F17_SSIES-3_THERMAL-PLASMA",
            "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: William Hanson, Rod Heelis, Marc Hairston at University of Texas Dallas, Center for Space Sciences",
          "Format": [
            "PNG",
            "PDF",
            "SVG"
          ],
          "AccessURL": {
            "Name": "HAPI visualizations",
            "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=DMSP-F17_SSIES-3_THERMAL-PLASMA&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "DMSP-F17_SSIES-3_THERMAL-PLASMA",
            "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": "2006-11-08T17:33:48Z",
          "StopDate": "2025-08-02T00:49:47Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop",
        "Cadence": "PT1S",
        "_Cadence": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/dmsp/dmspf17/ssies/ssies-3rl/thermal-plasma-cdf/2006/dmsp-f17_ssies-3_thermal-plasma_200611081733_v01.cdf. The most common cadence, 1000 [ms] = PT1S, occurred for 99.9832% of the 5958 timesteps. "
      },
      "Keyword": [
        "Defense Meteorological Satellite Program (from all.xml/observatory/description/@short)",
        "Special Sensors-Ions, Electrons, and Scintillation thermal plasma analysis package (from all.xml/instrument/description/@short)",
        "Space Physics (from Master/CDFglobalAttributes/Discipline)",
        "Magnetospheric Science (from Master/CDFglobalAttributes/Discipline)",
        "Ionospheric Science (from Master/CDFglobalAttributes/Discipline)",
        "dmsp (from Master/CDFglobalAttributes/Source_name)",
        "Defense Meteorological Satellite Program (from Master/CDFglobalAttributes/Source_name)",
        "thermal-plasma (from Master/CDFglobalAttributes/Data_type)",
        "ssies (from all.xml/instrument/@ID)"
      ],
      "ObservedRegion": [
        "Earth.Magnetosphere",
        "Earth.Magnetosphere.Polar",
        "Earth.NearSurface",
        "Earth.NearSurface.AuroralRegion",
        "Earth.NearSurface.EquatorialRegion",
        "Earth.NearSurface.Ionosphere",
        "Earth.NearSurface.PolarCap"
      ],
      "_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/DMSP_5D-3/F17/SESS/SSI/ES-3",
      "MeasurementType": [
        "ThermalPlasma",
        "IonComposition"
      ],
      "Parameter2": [
        {
          "Name": "Epoch",
          "ParameterKey": "Epoch",
          "Description": "CATDESC: 'Default 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": null,
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "vx",
          "ParameterKey": "vx",
          "Description": "Master CDF CATDESC: 'Vx - median filtered and smoothed ion flow in the ram direction'. Master CDF VAR_NOTES: 'median filtered and smoothed ion flow in the ram direction from the fits to the RPA curve'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "m/s",
          "FillValue": -999999.0
        },
        {
          "Name": "quality flag for Vx data",
          "ParameterKey": "vxqual",
          "Description": "Master CDF CATDESC: '----> Vx quality flag [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-good 2-fair 3-caution 4-bad 5-uncertain '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1,6-good;2,7-fair;else warn"
        },
        {
          "Name": "vx rms",
          "ParameterKey": "vxrms",
          "Description": "Master CDF CATDESC: '----> Vx root mean square of the RPA fit'. Master CDF VAR_NOTES: 'root mean square of the fit to the RPA curve giving an indication of the quality of the RPA data for this sweep'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -999999.0
        },
        {
          "Name": "Vx flow",
          "ParameterKey": "vxraw",
          "Description": "Master CDF CATDESC: 'Vx - original unfiltered Vx flow'. Master CDF VAR_NOTES: 'the unfiltered Vx flow values calculated by the RPA fitting routine'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "m/s",
          "FillValue": -999999.0
        },
        {
          "Name": "vy",
          "ParameterKey": "vy",
          "Description": "Master CDF CATDESC: 'Vy - ion flow in the horizontal crosstrack direction'. Master CDF VAR_NOTES: 'crosstrack horizontal ion flow from IDM, positive is in the sunward direction regardless of the orientation of the orbit, data taken in two modes: normal and slow (see nmbpts)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "m/s",
          "FillValue": -999999.0
        },
        {
          "Name": "quality flag for Vy data",
          "ParameterKey": "vyqual",
          "Description": "Master CDF CATDESC: '----> quality flag for Vy data [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-good 2-fair 3-caution 4-bad 5-uncertain 6-good (F17) 7-fair (F17) 8-caution (F17) 9-caution (sun glint or high-energy particles)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1,6-good;2,7-fair;else warn"
        },
        {
          "Name": "vy rms",
          "ParameterKey": "vyrms",
          "Description": "Master CDF CATDESC: '----> standard deviation of the Vy flow'. Master CDF VAR_NOTES: 'standard deviation of the six Vy samples taken per second in the normal mode, fill data in slow mode'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "m/s",
          "FillValue": -999999.0
        },
        {
          "Name": "roughness Vy",
          "ParameterKey": "dmhrough",
          "Description": "Master CDF CATDESC: '----> roughness parameter of Vy'. Master CDF VAR_NOTES: 'roughness parameter of Vy defined as (delta Vy / averaged Vy)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -999999.0
        },
        {
          "Name": "vz",
          "ParameterKey": "vz",
          "Description": "Master CDF CATDESC: 'Vz - ion flow in the vertical crosstrack direction '. Master CDF VAR_NOTES: 'crosstrack vertical ion flow from IDM, positive is in the upward direction, data taken in two modes: normal and slow (see nmbpts)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "m/s",
          "FillValue": -999999.0
        },
        {
          "Name": "quality flag for Vz data",
          "ParameterKey": "vzqual",
          "Description": "Master CDF CATDESC: '----> quality flag for Vz data [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-good 2-fair 3-caution 4-bad 5-uncertain 6-good (F17) 7-fair (F17) 8-caution (F17) 9-caution (sun glint or high-energy particles) '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1,6-good;2,7-fair;else warn"
        },
        {
          "Name": "stdev vz rms",
          "ParameterKey": "vzrms",
          "Description": "Master CDF CATDESC: '----> standard deviation of the Vz flow'. Master CDF VAR_NOTES: 'standard deviation of the six Vz samples taken per second in the normal mode, fill data in slow mode'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "m/s",
          "FillValue": -999999.0
        },
        {
          "Name": "roughness Vz",
          "ParameterKey": "dmvrough",
          "Description": "Master CDF CATDESC: '----> roughness parameter of Vz (delta Vz / averaged Vz)'. Master CDF VAR_NOTES: 'roughness parameter of Vy defined as (delta Vy / averaged Vy)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -999999.0
        },
        {
          "Name": "ion temperature",
          "ParameterKey": "temp",
          "Description": "Master CDF CATDESC: 'ion temperature'. Master CDF VAR_NOTES: 'temperature of the ions in the plasma calculated from the fit to the RPA curve'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg k",
          "FillValue": -999999.0
        },
        {
          "Name": "Quality flag for the ion temperature",
          "ParameterKey": "tempqual",
          "Description": "Master CDF CATDESC: '----> Quality flag for the ion temperature [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-good 2-fair 3-caution 4-bad 5-uncertain '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1,6-good;2,7-fair;else warn"
        },
        {
          "Name": "electron temperature",
          "ParameterKey": "te",
          "Description": "Master CDF CATDESC: 'electron temperature'. Master CDF VAR_NOTES: 'the electron temperature based on an onboard calculation of the Langmuir probe sweep which occurs once every 4 s'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg k",
          "FillValue": -999999.0
        },
        {
          "Name": "ion density",
          "ParameterKey": "dens",
          "Description": "Master CDF CATDESC: 'Ni calculated from the RPA'. Master CDF VAR_NOTES: 'Ion density of the plasma calculated from the fit to the RPA curve'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "Ions/cc",
          "FillValue": -999999.0
        },
        {
          "Name": "density quality flag",
          "ParameterKey": "densqual",
          "Description": "Master CDF CATDESC: '----> quality flag for the ion density [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-good 2-fair 3-caution 4-bad 5-uncertain '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1,6-good;2,7-fair;else warn"
        },
        {
          "Name": "ion density scint meter",
          "ParameterKey": "ductdens",
          "Description": "Master CDF CATDESC: 'Ni from scintillation meter'. Master CDF VAR_NOTES: 'the average of the 24 Hz samples of the ion density by the scintillation meter, because of its large aperture this is considered the best meaure of the ion density'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "ions/cc",
          "FillValue": -999999.0
        },
        {
          "Name": "roughness SM den",
          "ParameterKey": "ductdensrough",
          "Description": "Master CDF CATDESC: '----> roughness parameter of SM density'. Master CDF VAR_NOTES: 'roughness parameter of scintillation meter ion density  defined as (delta Ni/ averaged Ni)'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -999999.0
        },
        {
          "Name": "ion density RPA 0 volts",
          "ParameterKey": "dens0v",
          "Description": "Master CDF CATDESC: 'Ni measured from the RPA at 0 volts'. Master CDF VAR_NOTES: 'during each RPA sweep there is a point where the repeller voltage is 0 V so all the ions reach the collector, this is the ion density based on that measurement'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "ions/cc",
          "FillValue": -999999.0
        },
        {
          "Name": "ion density IDM",
          "ParameterKey": "dmdens",
          "Description": "Master CDF CATDESC: 'Ni from the IDM'. Master CDF VAR_NOTES: 'the ion density based on the collector current in the IDM, because some or all of the light ions are excluded this density should always be equal to or less than the other ion densities'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "ions/cc",
          "FillValue": -999999.0
        },
        {
          "Name": "frac H+ ions in plasma",
          "ParameterKey": "frach",
          "Description": "Master CDF CATDESC: 'fractional amount of H+ ions in plasma'. Master CDF VAR_NOTES: 'fractional amount of the plasma that is H+ based on the fitting of the RPA curve, because of uncertainties the value can exceed 1.0; disregard > 1.05 and negative '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -999999.0
        },
        {
          "Name": "frac H+ quality flag",
          "ParameterKey": "frachqual",
          "Description": "Master CDF CATDESC: '----> quality flag for fractional H+ [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-good 2-fair 3-caution 4-bad 5-uncertain '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1,6-good;2,7-fair;else warn"
        },
        {
          "Name": "frac He+ ions in plasma",
          "ParameterKey": "frache",
          "Description": "Master CDF CATDESC: 'fractional amount of He+ ions in plasma'. Master CDF VAR_NOTES: 'fractional amount of the plasma that is He+ based on the fitting of the RPA curve, because of uncertainties the value can exceed 1.0; disregard > 1.05 and negative '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -999999.0
        },
        {
          "Name": "frac He+ quality flag",
          "ParameterKey": "frachequal",
          "Description": "Master CDF CATDESC: '----> quality flag for fractional He+ [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-good 2-fair 3-caution 4-bad 5-uncertain '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1,6-good;2,7-fair;else warn"
        },
        {
          "Name": "frac O+ ions in plasma",
          "ParameterKey": "fraco",
          "Description": "Master CDF CATDESC: 'fractional amount of O+ ions in plasma'. Master CDF VAR_NOTES: 'fractional amount of the plasma that is O+ based on the fitting of the RPA curve, because of uncertainties the value can exceed 1.0; disregard > 1.05 and negative '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -999999.0
        },
        {
          "Name": "frac O+ quality flag",
          "ParameterKey": "fracoqual",
          "Description": "Master CDF CATDESC: '----> quality flag for fractional O+ [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-good 2-fair 3-caution 4-bad 5-uncertain '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1,6-good;2,7-fair;else warn"
        },
        {
          "Name": "high energy particles",
          "ParameterKey": "ebm",
          "Description": "Master CDF CATDESC: 'electron background monitor - high energy particle currents detected by the RPA '. Master CDF VAR_NOTES: 'once every 2 s the RPA repeller voltage is set so high that only high energy electrons or ions reach the collector. A large current indicates high-energy particles or photo-electron production (a sun-glint). '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "Amps",
          "FillValue": -999999.0
        },
        {
          "Name": "quality flag for RPA data",
          "ParameterKey": "corrpaqual",
          "Description": "Master CDF CATDESC: 'Overall quality flag for RPA data [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-good 2-fair 3-caution 4-bad 5-uncertain '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1,6-good;2,7-fair;else warn"
        },
        {
          "Name": "quality flag for RPA data",
          "ParameterKey": "rpainfo",
          "Description": "Master CDF CATDESC: 'flag for RPA sweep direction [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-retarding potential increasing 2-retarding potential decreasing'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "retarding potential: 1-increasing,2-decreasing"
        },
        {
          "Name": "geographic latitude",
          "ParameterKey": "glat",
          "Description": "Master CDF CATDESC: 'geographical latitude'. Master CDF VAR_NOTES: 'geographic latitude of s/c'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg"
        },
        {
          "Name": "geographic longitude",
          "ParameterKey": "glon",
          "Description": "Master CDF CATDESC: 'geographic east longitude'. Master CDF VAR_NOTES: 'geographic east longitude of s/c'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg"
        },
        {
          "Name": "magnetic latitude",
          "ParameterKey": "mlat",
          "Description": "Master CDF CATDESC: 'magnetic latitude, mapped to 120 km'. Master CDF VAR_NOTES: 'magnetic latitude of field line at s/c mapped to 120 km '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg"
        },
        {
          "Name": "magnetic local time",
          "ParameterKey": "mlt",
          "Description": "Master CDF CATDESC: 'magnetic local time, mapped to 120 km'. Master CDF VAR_NOTES: 'magnetic local time of field line at s/c mapped to 120 km '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "hour and decimal hour"
        },
        {
          "Name": "solar zenith angle",
          "ParameterKey": "sza",
          "Description": "Master CDF CATDESC: 'solar zenith angle'. Master CDF VAR_NOTES: 'angle between the sun-earth line and the s/c-center of earth line'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg"
        },
        {
          "Name": "altitude",
          "ParameterKey": "alt",
          "Description": "Master CDF CATDESC: 'altitude'. Master CDF VAR_NOTES: 'altitude of the s/c above earth’s surface'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km"
        },
        {
          "Name": "magnetic latitude",
          "ParameterKey": "mlat_tt",
          "Description": "Master CDF CATDESC: '[Labels on plots] magnetic latitude, mapped to 120 km'. Master CDF VAR_NOTES: 'magnetic latitude of field line at s/c mapped to 120 km '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg"
        },
        {
          "Name": "magnetic local time",
          "ParameterKey": "mlt_tt",
          "Description": "Master CDF CATDESC: '[Labels on plots] magnetic local time, mapped to 120 km'. Master CDF VAR_NOTES: 'magnetic local time of field line at s/c mapped to 120 km '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "hour and decimal hour"
        },
        {
          "Name": "geographic latitude",
          "ParameterKey": "glat_tt",
          "Description": "Master CDF CATDESC: '[Labels on plots] geographical latitude'. Master CDF VAR_NOTES: 'geographic latitude of s/c'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg"
        },
        {
          "Name": "geographic longitude",
          "ParameterKey": "glon_tt",
          "Description": "Master CDF CATDESC: '[Labels on plots] geographic east longitude'. Master CDF VAR_NOTES: 'geographic east longitude of s/c'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg"
        },
        {
          "Name": "solar zenith angle",
          "ParameterKey": "sza_tt",
          "Description": "Master CDF CATDESC: '[Labels on plots] solar zenith angle'. Master CDF VAR_NOTES: 'angle between the sun-earth line and the s/c-center of earth line'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg"
        },
        {
          "Name": "altitude",
          "ParameterKey": "alt_tt",
          "Description": "Master CDF CATDESC: '[Labels on plots] altitude'. Master CDF VAR_NOTES: 'altitude of the s/c above earth’s surface'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km"
        },
        {
          "Name": "#pts vy-vz",
          "ParameterKey": "nmbot",
          "Description": "Master CDF CATDESC: 'number of data points in the Vy - Vz average'. Master CDF VAR_NOTES: 'the IDM operates in two modes: normal mode takes six horizontal and six vertical samples per second, slow mode is for low density conditions where only one sample is taken each second and alternates between directions'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1-slow mode,6-normal mode",
          "FillValue": -999999.0
        },
        {
          "Name": "overall quality flag for the IDM data",
          "ParameterKey": "idmqual",
          "Description": "Master CDF CATDESC: 'overall quality flag for the IDM data [READ QUALITY FLAG Document: link below]'. Master CDF VAR_NOTES: '1-good 2-fair 3-caution 4-bad 5-uncertain 6-good (F17) 7-fair (F17) 8-caution (F17) 9-caution (sun glint or high-energy particles) '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "1,6-good;2,7-fair;else warn"
        },
        {
          "Name": "spacecraft velocity",
          "ParameterKey": "scvel",
          "Description": "Master CDF CATDESC: 'spacecraft velocity'. Master CDF VAR_NOTES: 'orbital velocity of the spacecraft'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "km/s",
          "FillValue": -999999.0
        },
        {
          "Name": "rpaground",
          "ParameterKey": "rpaground",
          "Description": "Master CDF CATDESC: 'potential difference between SSIES instruments and spacecraft ground'. Master CDF VAR_NOTES: 'the DMSP spacecraft charges negative relative to the plasma ground so SSIES is electrically insolated and driven positive relative to spacecraft ground to keep the instrument near the plasma ground'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "deg k",
          "FillValue": -999999.0
        },
        {
          "Name": "potential",
          "ParameterKey": "pot",
          "Description": "Master CDF CATDESC: 'potential of the SSIES instruments relative to the plasma ground'. Master CDF VAR_NOTES: 'all the SSIES instruments are held near the plasma ground potential, nominally about -1 V relative to the plasma, this value is calculated from the RPA curve fit, shown as \\“SC Potential\\” on the plots '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "volts",
          "FillValue": -999999.0
        },
        {
          "Name": "bx",
          "ParameterKey": "bx",
          "Description": "Master CDF CATDESC: 'north component of Earths magnetic field (IGRF)'. Master CDF VAR_NOTES: 'northward component of the Earths magnetic field at the spacecrafts location calculated by the IGRF model'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nT",
          "FillValue": -999999.0
        },
        {
          "Name": "by",
          "ParameterKey": "by",
          "Description": "Master CDF CATDESC: 'east component of Earths magnetic field (IGRF)'. Master CDF VAR_NOTES: 'eastward component of the Earths magnetic field at the spacecrafts location calculated by the IGRF model'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nT",
          "FillValue": -999999.0
        },
        {
          "Name": "bz",
          "ParameterKey": "bz",
          "Description": "Master CDF CATDESC: 'vertical downward component of Earths magnetic field (IGRF)'. Master CDF VAR_NOTES: 'vertical downward component of the Earths magnetic field at the spacecrafts location calculated by the IGRF model'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "nT",
          "FillValue": -999999.0
        },
        {
          "Name": "corotation vel ram",
          "ParameterKey": "corvelx",
          "Description": "Master CDF CATDESC: 'corotation velocity of ionosphere in the ram direction '. Master CDF VAR_NOTES: 'the ram component (x) of the corotation speed of the ionosphere at the spacecrafts location'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "m/s",
          "FillValue": -999999.0
        },
        {
          "Name": "corotation vel crosstrack",
          "ParameterKey": "corvely",
          "Description": "Master CDF CATDESC: 'corotation velocity of ionosphere in the horizontal crosstrack direction '. Master CDF VAR_NOTES: 'the crosstrack horizontal component (y) of the corotation speed of the ionosphere at the spacecrafts location'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "m/s",
          "FillValue": -999999.0
        },
        {
          "Name": "corotation vel vertical",
          "ParameterKey": "corvelz",
          "Description": "Master CDF CATDESC: 'corotation velocity of ionosphere in the vertical direction '. Master CDF VAR_NOTES: 'the crosstrack vertical component (z) of the corotation speed of the ionosphere at the spacecrafts location, since DMSP is in a circular orbit, this value is zero'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": "m/s",
          "FillValue": -999999.0
        }
      ]
    }
  }
}