{
  "id": "DMSP-F18_SSIES-3_THERMAL-PLASMA",
  "url": "http://hpde.io/NASA/NumericalData/DMSP_5D-3/F18/SESS/SSIES-3/ThermalPlasma/CDF/PT1S",
  "data-file": "./data/spase_hpde_io/info/DMSP-F18_SSIES-3_THERMAL-PLASMA.json",
  "data": {
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      "NumericalData": {
        "ResourceID": "spase://NASA/NumericalData/DMSP_5D-3/F18/SESS/SSIES-3/ThermalPlasma/CDF/PT1S",
        "NamingAuthority": "NASA",
        "ResourceType": "NumericalData",
        "ResourceHeader": {
          "ResourceName": "DMSP F18 Special Sensors-Ions, Electrons, and Scintillation (SSIES) Thermal Plasma Analysis Package, Level 2 (L2), 1 s Data in CDF Format",
          "DOI": "https://doi.org/10.48322/cxc3-w323",
          "ReleaseDate": "2025-12-04T13:29:10Z",
          "RevisionHistory": {
            "RevisionEvent": [
              {
                "ReleaseDate": "2024-05-03T00:00:00.00",
                "Note": "Metadata created by ADAPT code (LFB), final editing and DOI minting by AK"
              },
              {
                "ReleaseDate": "2025-10-02T15:11:49Z",
                "Note": "Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB"
              },
              {
                "ReleaseDate": "2025-12-04T13:29:10Z",
                "Note": "Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB"
              }
            ]
          },
          "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.",
          "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",
          "PublicationInfo": {
            "Authors": "Hairston, Marc, R.; Coley, William, R.; Heelis, Roderick, A.; Hanson, William, B.",
            "PublicationDate": "2024-01-01T00:00:00",
            "PublishedBy": "Space Physics Data Facility"
          },
          "Contact": [
            {
              "PersonID": "spase://SMWG/Person/Marc.R.Hairston",
              "Role": [
                "PrincipalInvestigator",
                "ProjectScientist",
                "InstrumentScientist",
                "TechnicalContact",
                "GeneralContact"
              ]
            },
            {
              "PersonID": "spase://SMWG/Person/William.R.Coley",
              "Role": [
                "ProjectScientist",
                "InstrumentScientist",
                "TechnicalContact"
              ]
            },
            {
              "PersonID": "spase://SMWG/Person/Roderick.A.Heelis",
              "Role": [
                "FormerPI",
                "InstrumentScientist",
                "InstrumentLead",
                "ProjectManager"
              ]
            },
            {
              "PersonID": "spase://SMWG/Person/William.B.Hanson",
              "Role": "FormerPI"
            },
            {
              "PersonID": "spase://SMWG/Person/Robert.M.Candey",
              "Role": "MetadataContact"
            },
            {
              "PersonID": "spase://SMWG/Person/Andriy.Koval",
              "Role": "MetadataContact"
            }
          ],
          "InformationURL": [
            {
              "Name": "DMSP SSIES-3 QUALITY FLAG Document",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/dmsp/documents/ssies/SSIES-3_qualityflags_Sept2019.pdf"
            },
            {
              "Name": "DMSP SSIES-3 Documentation",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/dmsp/documents/ssies/"
            },
            {
              "Name": "Original HDF files",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/dmsp/dmspf18/ssies/ssies-3rl/thermal-plasma-hdf/",
              "Description": "HDF files used to convert to CDF files at SPDF"
            },
            {
              "Name": "Thermal Plasma Plots",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/dmsp/dmspf18/ssies/ssies-3rl/thermal-plasma-plots/",
              "Description": "Single orbit plots of plasma data"
            }
          ]
        },
        "AccessInformation": [
          {
            "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
            "Availability": "Online",
            "AccessRights": "Open",
            "RightsList": {
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                "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
                "RightsName": "Creative Commons Zero v1.0 Universal",
                "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
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            },
            "AccessURL": {
              "Name": "FTPS from SPDF (not with most browsers)",
              "URL": "ftps://spdf.gsfc.nasa.gov/pub/data/dmsp/dmspf18/ssies/ssies-3rl/thermal-plasma-cdf/",
              "Description": "Access to Data in CDF Format via ftps from SPDF"
            },
            "Format": "CDF",
            "Encoding": "None",
            "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"
          },
          {
            "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
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            "AccessURL": {
              "Name": "HTTPS from SPDF",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/dmsp/dmspf18/ssies/ssies-3rl/thermal-plasma-cdf/",
              "Description": "Access to Data in CDF Format via https from SPDF"
            },
            "Format": "CDF",
            "Encoding": "None",
            "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"
          },
          {
            "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
            "Availability": "Online",
            "AccessRights": "Open",
            "RightsList": {
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                "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
              }
            },
            "AccessURL": {
              "Name": "CDAWeb",
              "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=DMSP-F18_SSIES-3_THERMAL-PLASMA&index=sp_phys",
              "ProductKey": "DMSP-F18_SSIES-3_THERMAL-PLASMA",
              "Description": "Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb"
            },
            "Format": "CDF",
            "Encoding": "None",
            "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"
          },
          {
            "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
            "Availability": "Online",
            "AccessRights": "Open",
            "RightsList": {
              "Rights": {
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                "RightsName": "Creative Commons Zero v1.0 Universal",
                "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
              }
            },
            "AccessURL": {
              "Name": "CDAWeb HAPI Server",
              "URL": "https://cdaweb.gsfc.nasa.gov/hapi",
              "Style": "HAPI",
              "ProductKey": "DMSP-F18_SSIES-3_THERMAL-PLASMA",
              "Description": "Web Service to this product using the HAPI interface."
            },
            "Format": "CSV"
          }
        ],
        "ProcessingLevel": "Calibrated",
        "InstrumentID": "spase://SMWG/Instrument/DMSP_5D-3/F18/SESS/SSI/ES-3",
        "MeasurementType": [
          "ThermalPlasma",
          "IonComposition"
        ],
        "TemporalDescription": {
          "TimeSpan": {
            "StartDate": "2009-10-22T16:31:30",
            "RelativeStopDate": "-P3M"
          },
          "Cadence": "PT1S"
        },
        "ObservedRegion": [
          "Earth.Magnetosphere",
          "Earth.Magnetosphere.Polar",
          "Earth.NearSurface",
          "Earth.NearSurface.AuroralRegion",
          "Earth.NearSurface.EquatorialRegion",
          "Earth.NearSurface.Ionosphere",
          "Earth.NearSurface.PolarCap"
        ],
        "Parameter": {
          "Epoch": {
            "Name": "Epoch",
            "ParameterKey": "Epoch",
            "Description": "Default time",
            "Caveats": "This Parameter exhibits an increasing Monotonic Progression",
            "RenderingHints": {
              "AxisLabel": "Epoch",
              "ScaleType": "LinearScale"
            },
            "ValidMin": "01-Jan-1990 00:00:00.000",
            "ValidMax": "31-Dec-2029 23:59:59.999",
            "FillValue": "31-Dec-9999 23:59:59.999",
            "Support": {
              "SupportQuantity": "Temporal"
            }
          },
          "vx": {
            "Name": "vx",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "vx",
            "Description": "Vx - median filtered and smoothed ion flow in the ram direction",
            "Caveats": "median filtered and smoothed ion flow in the ram direction from the fits to the RPA curve",
            "Cadence": "PT1S",
            "Units": "m/s",
            "RenderingHints": {
              "AxisLabel": "vx",
              "ValueFormat": "F8.0"
            },
            "ValidMin": "-2000.0",
            "ValidMax": "2000.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": [
                "Component.I",
                "Median"
              ],
              "ParticleQuantity": "FlowVelocity"
            }
          },
          "vxqual": {
            "Name": "quality flag for Vx data",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "vxqual",
            "Description": "\"Vx quality flag:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]\"",
            "Caveats": "1-good 2-fair 3-caution 4-bad 5-uncertain",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "quality flag for Vx data",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "5",
            "Support": {
              "Qualifier": "Component.I",
              "SupportQuantity": "DataQuality"
            }
          },
          "vxrms": {
            "Name": "vx rms",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "vxrms",
            "Description": "Vx root mean square of the RPA fit",
            "Caveats": "root mean square of the fit to the RPA curve giving an indication of the quality of the RPA data for this sweep",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "vx rms",
              "ValueFormat": "F10.2",
              "ScaleMin": "0.0",
              "ScaleMax": "99.0"
            },
            "ValidMin": "0.0",
            "ValidMax": "999.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": [
                "Component.I",
                "Fit",
                "StandardDeviation"
              ],
              "ParticleQuantity": "FlowVelocity"
            }
          },
          "vxraw": {
            "Name": "Vx flow",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "vxraw",
            "Description": "Vx - original unfiltered Vx flow",
            "Caveats": "the unfiltered Vx flow values calculated by the RPA fitting routine",
            "Cadence": "PT1S",
            "Units": "m/s",
            "RenderingHints": {
              "AxisLabel": "Vx flow",
              "ValueFormat": "F8.0"
            },
            "ValidMin": "-2000.0",
            "ValidMax": "2000.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": "Component.I",
              "ParticleQuantity": "FlowVelocity"
            }
          },
          "vy": {
            "Name": "vy",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "vy",
            "Description": "Vy - ion flow in the horizontal crosstrack direction",
            "Caveats": "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)",
            "Cadence": "PT1S",
            "Units": "m/s",
            "RenderingHints": {
              "AxisLabel": "vy",
              "ValueFormat": "F8.0"
            },
            "ValidMin": "-2000.0",
            "ValidMax": "2000.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": "Component.J",
              "ParticleQuantity": "FlowVelocity"
            }
          },
          "vyqual": {
            "Name": "quality flag for Vy data",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "vyqual",
            "Description": "\"Quality flag for Vy data:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]\"",
            "Caveats": "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)",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "quality flag for Vy data",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "9",
            "Support": {
              "Qualifier": "Component.J",
              "SupportQuantity": "DataQuality"
            }
          },
          "vyrms": {
            "Name": "vy rms",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "vyrms",
            "Description": "Standard deviation of the Vy flow",
            "Caveats": "standard deviation of the six Vy samples taken per second in the normal mode, fill data in slow mode",
            "Cadence": "PT1S",
            "Units": "m/s",
            "RenderingHints": {
              "AxisLabel": "vy rms",
              "ValueFormat": "F10.2"
            },
            "ValidMin": "0.0",
            "ValidMax": "2800.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": [
                "Component.J",
                "StandardDeviation"
              ],
              "ParticleQuantity": "FlowVelocity"
            }
          },
          "dmhrough": {
            "Name": "roughness Vy",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "dmhrough",
            "Description": "Roughness parameter of Vy",
            "Caveats": "roughness parameter of Vy defined as (delta Vy / averaged Vy)",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "roughness Vy",
              "ValueFormat": "F11.3"
            },
            "ValidMin": "0.0",
            "ValidMax": "1.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": [
                "Component.J",
                "Ratio"
              ],
              "ParticleQuantity": "FlowVelocity"
            }
          },
          "vz": {
            "Name": "vz",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "vz",
            "Description": "Vz - ion flow in the vertical crosstrack direction",
            "Caveats": "crosstrack vertical ion flow from IDM, positive is in the upward direction, data taken in two modes: normal and slow (see nmbpts)",
            "Cadence": "PT1S",
            "Units": "m/s",
            "RenderingHints": {
              "AxisLabel": "vz",
              "ValueFormat": "F8.0"
            },
            "ValidMin": "-2000.0",
            "ValidMax": "2000.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": "Component.K",
              "ParticleQuantity": "FlowVelocity"
            }
          },
          "vzqual": {
            "Name": "quality flag for Vz data",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "vzqual",
            "Description": "\"Quality flag for Vz data:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]\"",
            "Caveats": "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)",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "quality flag for Vz data",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "9",
            "Support": {
              "Qualifier": "Component.K",
              "SupportQuantity": "DataQuality"
            }
          },
          "vzrms": {
            "Name": "stdev vz rms",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "vzrms",
            "Description": "Standard deviation of the Vz flow",
            "Caveats": "standard deviation of the six Vz samples taken per second in the normal mode, fill data in slow mode",
            "Cadence": "PT1S",
            "Units": "m/s",
            "RenderingHints": {
              "AxisLabel": "stdev vz rms",
              "ValueFormat": "F10.2"
            },
            "ValidMin": "0.0",
            "ValidMax": "2800.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": [
                "Component.K",
                "StandardDeviation"
              ],
              "ParticleQuantity": "FlowVelocity"
            }
          },
          "dmvrough": {
            "Name": "roughness Vz",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "dmvrough",
            "Description": "Roughness parameter of Vz (delta Vz / averaged Vz)",
            "Caveats": "roughness parameter of Vy defined as (delta Vy / averaged Vy)",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "roughness Vz",
              "ValueFormat": "F11.3"
            },
            "ValidMin": "0.0",
            "ValidMax": "1.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": [
                "Component.K",
                "Ratio"
              ],
              "ParticleQuantity": "FlowVelocity"
            }
          },
          "temp": {
            "Name": "ion temperature",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "temp",
            "Description": "Ion temperature",
            "Caveats": "temperature of the ions in the plasma calculated from the fit to the RPA curve",
            "Cadence": "PT1S",
            "Units": "°K",
            "RenderingHints": {
              "AxisLabel": "ion temperature",
              "ValueFormat": "F8.0",
              "ScaleMin": "500.0",
              "ScaleMax": "5000.0"
            },
            "ValidMin": "500.0",
            "ValidMax": "20000.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "ParticleQuantity": "Temperature"
            }
          },
          "tempqual": {
            "Name": "Quality flag for the ion temperature",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "tempqual",
            "Description": "\"Quality flag for the ion temperature:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]\"",
            "Caveats": "1-good 2-fair 3-caution 4-bad 5-uncertain",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "Quality flag for the ion temperature",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "5",
            "Support": {
              "SupportQuantity": "DataQuality"
            }
          },
          "te": {
            "Name": "electron temperature",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "te",
            "Description": "Electron temperature",
            "Caveats": "the electron temperature based on an onboard calculation of the Langmuir probe sweep which occurs once every 4 s",
            "Cadence": "PT1S",
            "Units": "°K",
            "RenderingHints": {
              "AxisLabel": "electron temperature",
              "ValueFormat": "F8.0"
            },
            "ValidMin": "500.0",
            "ValidMax": "10000.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Electron",
              "ParticleQuantity": "Temperature"
            }
          },
          "dens": {
            "Name": "ion density",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "dens",
            "Description": "Ni calculated from the RPA",
            "Caveats": "Ion density of the plasma calculated from the fit to the RPA curve",
            "Cadence": "PT1S",
            "Units": "cm^-3",
            "UnitsConversion": "1.0e6>m^-3",
            "RenderingHints": {
              "AxisLabel": "ion density",
              "ValueFormat": "F8.0",
              "ScaleMin": "200.0",
              "ScaleMax": "1.0e+08"
            },
            "ValidMin": "0.0",
            "ValidMax": "1.0e+08",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "ParticleQuantity": "NumberDensity"
            }
          },
          "densqual": {
            "Name": "density quality flag",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "densqual",
            "Description": "\"Quality flag for the ion density:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]\"",
            "Caveats": "1-good 2-fair 3-caution 4-bad 5-uncertain",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "density quality flag",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "5",
            "Support": {
              "SupportQuantity": "DataQuality"
            }
          },
          "ductdens": {
            "Name": "ion density scint meter",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "ductdens",
            "Description": "Ni from scintillation meter",
            "Caveats": "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",
            "Cadence": "PT1S",
            "Units": "cm^-3",
            "UnitsConversion": "1.0e6>m^-3",
            "RenderingHints": {
              "AxisLabel": "ion density scint meter",
              "ValueFormat": "F8.0",
              "ScaleMin": "200.0",
              "ScaleMax": "1.0e+08"
            },
            "ValidMin": "0.0",
            "ValidMax": "1.0e+08",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "ParticleQuantity": "NumberDensity"
            }
          },
          "ductdensrough": {
            "Name": "roughness SM den",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "ductdensrough",
            "Description": "Roughness parameter of SM density",
            "Caveats": "roughness parameter of scintillation meter ion density defined as (delta Ni/ averaged Ni)",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "roughness SM den",
              "ValueFormat": "F11.3"
            },
            "ValidMin": "0.0",
            "ValidMax": "1.0",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": "Ratio",
              "ParticleQuantity": "NumberDensity"
            }
          },
          "dens0v": {
            "Name": "ion density RPA 0 volts",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "dens0v",
            "Description": "Ni measured from the RPA at 0 volts",
            "Caveats": "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",
            "Cadence": "PT1S",
            "Units": "cm^-3",
            "UnitsConversion": "1.0e6>m^-3",
            "RenderingHints": {
              "AxisLabel": "ion density RPA 0 volts",
              "ValueFormat": "F8.0"
            },
            "ValidMin": "0.0",
            "ValidMax": "1.0e+08",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "ParticleQuantity": "NumberDensity"
            }
          },
          "dmdens": {
            "Name": "ion density IDM",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "dmdens",
            "Description": "Ni from the IDM",
            "Caveats": "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",
            "Cadence": "PT1S",
            "Units": "cm^-3",
            "UnitsConversion": "1.0e6>m^-3",
            "RenderingHints": {
              "AxisLabel": "ion density IDM",
              "ValueFormat": "F8.0",
              "ScaleMin": "200.0",
              "ScaleMax": "1.0e+08"
            },
            "ValidMin": "0.0",
            "ValidMax": "1.0e+08",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "ParticleQuantity": "NumberDensity"
            }
          },
          "frach": {
            "Name": "frac H+ ions in plasma",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "frach",
            "Description": "Fractional amount of H+ ions in plasma",
            "Caveats": "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",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "frac H+ ions in plasma",
              "ValueFormat": "F10.2",
              "ScaleMin": "0.0",
              "ScaleMax": "1.05"
            },
            "ValidMin": "-0.1",
            "ValidMax": "1.05",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Proton",
              "Qualifier": "Ratio",
              "ParticleQuantity": "NumberDensity",
              "AtomicNumber": "1"
            }
          },
          "frachqual": {
            "Name": "frac H+ quality flag",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "frachqual",
            "Description": "\"Quality flag for fractional H+:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]\"",
            "Caveats": "1-good 2-fair 3-caution 4-bad 5-uncertain",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "flag H+ quality flag",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "5",
            "Support": {
              "SupportQuantity": "DataQuality"
            }
          },
          "frache": {
            "Name": "frac He+ ions in plasma",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "frache",
            "Description": "Fractional amount of He+ ions in plasma",
            "Caveats": "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",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "frac He+ ions in plasma",
              "ValueFormat": "F10.2",
              "ScaleMin": "0.0",
              "ScaleMax": "1.05"
            },
            "ValidMin": "-0.1",
            "ValidMax": "1.05",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": "Ratio",
              "ParticleQuantity": "NumberDensity"
            }
          },
          "frachequal": {
            "Name": "frac He+ quality flag",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "frachequal",
            "Description": "\"Quality flag for fractional He+:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]\"",
            "Caveats": "1-good 2-fair 3-caution 4-bad 5-uncertain",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "flag He+ quality flag",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "5",
            "Support": {
              "SupportQuantity": "DataQuality"
            }
          },
          "fraco": {
            "Name": "frac O+ ions in plasma",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "fraco",
            "Description": "Fractional amount of O+ ions in plasma",
            "Caveats": "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",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "frac O+ ions in plasma",
              "ValueFormat": "F10.2",
              "ScaleMin": "0.0",
              "ScaleMax": "1.05"
            },
            "ValidMin": "-0.1",
            "ValidMax": "1.05",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": "Ion",
              "Qualifier": "Ratio",
              "ParticleQuantity": "NumberDensity"
            }
          },
          "fracoqual": {
            "Name": "frac O+ quality flag",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "fracoqual",
            "Description": "\"Quality flag for fractional O+:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]\"",
            "Caveats": "1-good 2-fair 3-caution 4-bad 5-uncertain",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "flag O+ quality flag",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "5",
            "Support": {
              "SupportQuantity": "DataQuality"
            }
          },
          "ebm": {
            "Name": "high energy particles",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "ebm",
            "Description": "Electron background monitor - high energy particle currents detected by the RPA",
            "Caveats": "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).",
            "Cadence": "PT1S",
            "Units": "A",
            "RenderingHints": {
              "AxisLabel": "high energy particles",
              "ValueFormat": "F11.3"
            },
            "ValidMin": "-2.0e+09",
            "ValidMax": "2.0e+09",
            "FillValue": "-999999.0",
            "Particle": {
              "ParticleType": [
                "Electron",
                "Ion"
              ],
              "ParticleQuantity": "Current"
            }
          },
          "corrpaqual": {
            "Name": "quality flag for RPA data",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "corrpaqual",
            "Description": "\"Overall quality flag for RPA data:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]\"",
            "Caveats": "1-good 2-fair 3-caution 4-bad 5-uncertain",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "quality flag for RPA data",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "5",
            "Support": {
              "SupportQuantity": "DataQuality"
            }
          },
          "rpainfo": {
            "Name": "quality flag for RPA data",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "rpainfo",
            "Description": "\"Flag for RPA sweep direction:retarding potential: 1-increasing,2-decreasing [READ QUALITY FLAG Document]\"",
            "Caveats": "1-retarding potential increasing 2-retarding potential decreasing",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "quality flag for RPA data",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "2",
            "Support": {
              "SupportQuantity": "DataQuality"
            }
          },
          "glat": {
            "Name": "geographic latitude",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "glat",
            "Description": "Geographical latitude",
            "Caveats": "geographic latitude of s/c",
            "Cadence": "PT1S",
            "Units": "°",
            "CoordinateSystem": {
              "CoordinateRepresentation": "Spherical",
              "CoordinateSystemName": "GEO"
            },
            "RenderingHints": {
              "DisplayType": "TimeSeries",
              "AxisLabel": "geographic latitude",
              "ValueFormat": "F6.2"
            },
            "ValidMin": "-90.0",
            "ValidMax": "90.0",
            "Support": {
              "Qualifier": "DirectionAngle.ElevationAngle",
              "SupportQuantity": "Positional"
            }
          },
          "glon": {
            "Name": "geographic longitude",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "glon",
            "Description": "Geographic east longitude",
            "Caveats": "geographic east longitude of s/c",
            "Cadence": "PT1S",
            "Units": "°",
            "CoordinateSystem": {
              "CoordinateRepresentation": "Spherical",
              "CoordinateSystemName": "GEO"
            },
            "RenderingHints": {
              "DisplayType": "TimeSeries",
              "AxisLabel": "geographic longitude",
              "ValueFormat": "F7.2"
            },
            "ValidMin": "0.0",
            "ValidMax": "359.99",
            "Support": {
              "Qualifier": "DirectionAngle.AzimuthAngle",
              "SupportQuantity": "Positional"
            }
          },
          "mlat": {
            "Name": "magnetic latitude",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "mlat",
            "Description": "\"Magnetic latitude, mapped to 120 km\"",
            "Caveats": "magnetic latitude of field line at s/c mapped to 120 km",
            "Cadence": "PT1S",
            "Units": "°",
            "CoordinateSystem": {
              "CoordinateRepresentation": "Spherical",
              "CoordinateSystemName": "MAG"
            },
            "RenderingHints": {
              "DisplayType": "TimeSeries",
              "AxisLabel": "magnetic latitude",
              "ValueFormat": "F6.2"
            },
            "ValidMin": "-90.0",
            "ValidMax": "90.0",
            "Support": {
              "Qualifier": "DirectionAngle.ElevationAngle",
              "SupportQuantity": "Positional"
            }
          },
          "mlt": {
            "Name": "magnetic local time",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "mlt",
            "Description": "\"Magnetic local time, mapped to 120 km\"",
            "Caveats": "magnetic local time of field line at s/c mapped to 120 km",
            "Cadence": "PT1S",
            "Units": "hr",
            "UnitsConversion": "60>s",
            "CoordinateSystem": {
              "CoordinateRepresentation": "Spherical",
              "CoordinateSystemName": "MAG"
            },
            "RenderingHints": {
              "DisplayType": "TimeSeries",
              "AxisLabel": "magnetic local time",
              "ValueFormat": "F6.2"
            },
            "ValidMin": "0.0",
            "ValidMax": "23.99",
            "Support": {
              "Qualifier": "DirectionAngle.AzimuthAngle",
              "SupportQuantity": "Positional"
            }
          },
          "sza": {
            "Name": "solar zenith angle",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "sza",
            "Description": "Solar zenith angle",
            "Caveats": "angle between the sun-earth line and the s/c-center of earth line",
            "Cadence": "PT1S",
            "Units": "°",
            "RenderingHints": {
              "DisplayType": "TimeSeries",
              "AxisLabel": "solar zenith angle",
              "ValueFormat": "F7.2"
            },
            "ValidMin": "0.0",
            "ValidMax": "180.0",
            "Support": {
              "SupportQuantity": "Positional"
            }
          },
          "alt": {
            "Name": "altitude",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "alt",
            "Description": "Altitude",
            "Caveats": "altitude of the s/c above earth’s surface",
            "Cadence": "PT1S",
            "Units": "km",
            "UnitsConversion": "1.0e3>m",
            "RenderingHints": {
              "DisplayType": "TimeSeries",
              "AxisLabel": "altitude",
              "ValueFormat": "F7.2"
            },
            "ValidMin": "820.0",
            "ValidMax": "870.0",
            "Support": {
              "SupportQuantity": "Positional"
            }
          },
          "nmbot": {
            "Name": "#pts vy-vz",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "nmbot",
            "Description": "\"Number of data points in the Vy - Vz average:1-slow mode,6-normal mode\"",
            "Caveats": "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",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "#pts vy-vz",
              "ValueFormat": "F8.0"
            },
            "ValidMin": "1.0",
            "ValidMax": "10.0",
            "FillValue": "-999999.0",
            "Support": {
              "SupportQuantity": "Other"
            }
          },
          "idmqual": {
            "Name": "overall quality flag for the IDM data",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "idmqual",
            "Description": "\"Overall quality flag for the IDM data:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]\"",
            "Caveats": "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)",
            "Cadence": "PT1S",
            "RenderingHints": {
              "AxisLabel": "overall quality flag for the IDM data",
              "ValueFormat": "I2"
            },
            "ValidMin": "1",
            "ValidMax": "9",
            "Support": {
              "SupportQuantity": "DataQuality"
            }
          },
          "scvel": {
            "Name": "spacecraft velocity",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "scvel",
            "Description": "Spacecraft velocity",
            "Caveats": "orbital velocity of the spacecraft",
            "Cadence": "PT1S",
            "Units": "km/s",
            "UnitsConversion": "1.0e3>m/s",
            "RenderingHints": {
              "AxisLabel": "spacecraft velocity",
              "ValueFormat": "F9.1"
            },
            "ValidMin": "-7400.0",
            "ValidMax": "7500.0",
            "FillValue": "-999999.0",
            "Support": {
              "Qualifier": "Magnitude",
              "SupportQuantity": "Velocity"
            }
          },
          "rpaground": {
            "Name": "rpaground",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "rpaground",
            "Description": "Potential difference between SSIES instruments and spacecraft ground",
            "Caveats": "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",
            "Cadence": "PT1S",
            "Units": "°K",
            "RenderingHints": {
              "AxisLabel": "rpaground",
              "ValueFormat": "F8.0"
            },
            "ValidMin": "500.0",
            "ValidMax": "10000.0",
            "FillValue": "-999999.0",
            "Field": {
              "FieldQuantity": "Electric"
            }
          },
          "pot": {
            "Name": "potential",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "pot",
            "Description": "Potential of the SSIES instruments relative to the plasma ground",
            "Caveats": "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",
            "Cadence": "PT1S",
            "Units": "V",
            "RenderingHints": {
              "AxisLabel": "potential",
              "ValueFormat": "F10.2",
              "ScaleMin": "-2.0",
              "ScaleMax": "1.0"
            },
            "ValidMin": "-3.0",
            "ValidMax": "2.0",
            "FillValue": "-999999.0",
            "Field": {
              "FieldQuantity": "Electric"
            }
          },
          "bx": {
            "Name": "bx",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "bx",
            "Description": "North component of Earths magnetic field (IGRF)",
            "Caveats": "northward component of the Earths magnetic field at the spacecrafts location calculated by the IGRF model",
            "Cadence": "PT1S",
            "Units": "nT",
            "UnitsConversion": "1.0e-9>T",
            "RenderingHints": {
              "AxisLabel": "bx",
              "ValueFormat": "F9.1"
            },
            "ValidMin": "-5000.0",
            "ValidMax": "5000.0",
            "FillValue": "-999999.0",
            "Field": {
              "Qualifier": "Component.I",
              "FieldQuantity": "Magnetic"
            }
          },
          "by": {
            "Name": "by",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "by",
            "Description": "East component of Earths magnetic field (IGRF)",
            "Caveats": "eastward component of the Earths magnetic field at the spacecrafts location calculated by the IGRF model",
            "Cadence": "PT1S",
            "Units": "nT",
            "UnitsConversion": "1.0e-9>T",
            "RenderingHints": {
              "AxisLabel": "by",
              "ValueFormat": "F9.1"
            },
            "ValidMin": "-5000.0",
            "ValidMax": "5000.0",
            "FillValue": "-999999.0",
            "Field": {
              "Qualifier": "Component.J",
              "FieldQuantity": "Magnetic"
            }
          },
          "bz": {
            "Name": "bz",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "bz",
            "Description": "Vertical downward component of Earths magnetic field (IGRF)",
            "Caveats": "vertical downward component of the Earths magnetic field at the spacecrafts location calculated by the IGRF model",
            "Cadence": "PT1S",
            "Units": "nT",
            "UnitsConversion": "1.0e-9>T",
            "RenderingHints": {
              "AxisLabel": "bz",
              "ValueFormat": "F9.1"
            },
            "ValidMin": "-5000.0",
            "ValidMax": "5000.0",
            "FillValue": "-999999.0",
            "Field": {
              "Qualifier": "Component.K",
              "FieldQuantity": "Magnetic"
            }
          },
          "corvelx": {
            "Name": "corotation vel ram",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "corvelx",
            "Description": "Corotation velocity of ionosphere in the ram direction",
            "Caveats": "the ram component (x) of the corotation speed of the ionosphere at the spacecrafts location",
            "Cadence": "PT1S",
            "Units": "m/s",
            "RenderingHints": {
              "AxisLabel": "corotation vel ram",
              "ValueFormat": "F9.1"
            },
            "ValidMin": "-100.0",
            "ValidMax": "0.0",
            "FillValue": "-999999.0",
            "Support": {
              "Qualifier": "Component.I",
              "SupportQuantity": "Velocity"
            }
          },
          "corvely": {
            "Name": "corotation vel crosstrack",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "corvely",
            "Description": "Corotation velocity of ionosphere in the horizontal crosstrack direction",
            "Caveats": "the crosstrack horizontal component (y) of the corotation speed of the ionosphere at the spacecrafts location",
            "Cadence": "PT1S",
            "Units": "m/s",
            "RenderingHints": {
              "AxisLabel": "corotation vel crosstrack",
              "ValueFormat": "F9.1"
            },
            "ValidMin": "-600.0",
            "ValidMax": "600.0",
            "FillValue": "-999999.0",
            "Support": {
              "Qualifier": "Component.J",
              "SupportQuantity": "Velocity"
            }
          },
          "corvelz": {
            "Name": "corotation vel vertical",
            "Set": "Time series defined by using: Epoch",
            "ParameterKey": "corvelz",
            "Description": "Corotation velocity of ionosphere in the vertical direction",
            "Caveats": "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",
            "Cadence": "PT1S",
            "Units": "m/s",
            "RenderingHints": {
              "AxisLabel": "corotation vel vertical",
              "ValueFormat": "F9.1"
            },
            "ValidMin": "0.0",
            "ValidMax": "1.0",
            "FillValue": "-999999.0",
            "Support": {
              "Qualifier": "Component.K",
              "SupportQuantity": "Velocity"
            }
          }
        }
      }
    }
  }
}