{
  "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_2_9.xsd",
    "Version": "2.2.9",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/SOHO/CELIAS/PT5M",
      "ResourceHeader": {
        "ResourceName": "SOHO Charge, Element, and Isotope Analysis System (CELIAS) Proton Monitor 5 Minute Solar Wind data",
        "ReleaseDate": "2020-07-07T21:15:18Z",
        "Description": "The Proton Monitor is a solar wind Energy per Charge (E/Q) analyzer of a new design, consisting of a three-box deflection system followed by a wedge-shaped MicroChannel Plate (MCP) assembly. The data are derived from sets of 6 rates (one for each voltage step of the PM deflection system) obtained every 30 seconds. The voltage steps are spaced logarithmically (about 60% step size) from about 0.3 to 3 kV. At a given voltage step the energy per charge dynamic range is slightly more than a factor of 2. The overall geometry factor of the PM is about 1.0 x 10**-4 cm**2.",
        "Acknowledgement": "Please acknowledge the University of Maryland Space Physics Group",
        "Contact": {
          "PersonID": "spase://SMWG/Person/Fred.M.Ipavich",
          "Role": "PrincipalInvestigator"
        },
        "InformationURL": {
          "Name": "SOHO Celias Proton Monitor Home Page",
          "URL": "http://umtof.umd.edu/pm/",
          "Description": "Site hosting instrument information, some data and plots for SOHO Celias PM"
        },
        "PriorID": [
          "spase://VHO/NumericalData/SOHO/CELIAS/PT5M",
          "spase://VSPO/NumericalData/SOHO/CELIAS/PT5M"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/VHO-VMO",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "URL": "https://vho.nasa.gov/mission/soho/celias_pm/",
          "Description": "CELIAS Proton Monitor repository at VHO"
        },
        "Format": "Text",
        "Encoding": "ASCII"
      },
      "InstrumentID": [
        "spase://SMWG/Instrument/SOHO/CELIAS",
        "spase://SMWG/Instrument/SOHO/Ephemeris"
      ],
      "MeasurementType": [
        "ThermalPlasma",
        "Ephemeris"
      ],
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1996-01-20T20:17:30Z",
          "RelativeStopDate": "-PT1M"
        },
        "Cadence": "PT5M"
      },
      "ObservedRegion": "Heliosphere.NearEarth",
      "Caveats": "On rare occassions the spacecraft's roll angle is changed for brief periods, during which the derived flow direction will refer to a different plane. A list of such times is available at http://umtof.umd.edu/pm/roll.html. In addition, since SOHO is not a spinning spacecraft, the deflection system was designed to have a wide angular acceptance (+- 15 deg). For technical reasons this leads to an ambiguity between incident angle and incident energy/charge; this ambiguity was designed into the PM to match as closely as possible the behavior of the deflection system for the main MTOF sensor. It is not the energy/charge but rather the mass/charge that is needed for interpretation of the MTOF mass data.",
      "Parameter": [
        {
          "Name": "Year",
          "ParameterKey": "Field 1",
          "Description": "Two digit year",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Month",
          "ParameterKey": "Field 2",
          "Description": "String representation of month",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Day",
          "ParameterKey": "Field 3",
          "Description": "Day of the Month",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Time",
          "ParameterKey": "Field 4",
          "Description": "Colon seperated day of year, hour, minute and second (doy:HH:MM:SS)",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Proton Speed",
          "ParameterKey": "Field 5",
          "Description": "Proton Speed",
          "Units": "km/s",
          "Particle": {
            "ParticleType": "Proton",
            "Qualifier": "Magnitude",
            "ParticleQuantity": "Velocity"
          }
        },
        {
          "Name": "Proton Density",
          "ParameterKey": "Field 6",
          "Description": "Proton number density",
          "Caveats": "Parameters are derived from a combination of fitting and moment techniques",
          "Units": "cm^-3",
          "Particle": {
            "ParticleType": "Proton",
            "Qualifier": [
              "Fit",
              "Moment"
            ],
            "ParticleQuantity": "NumberDensity"
          }
        },
        {
          "Name": "Proton Thermal Speed",
          "ParameterKey": "Field 7",
          "Description": "Most probable proton thermal speed",
          "Caveats": "Parameters are derived from a combination of fitting and moment techniques",
          "Units": "km/s",
          "Particle": {
            "ParticleType": "Proton",
            "Qualifier": [
              "Scalar",
              "Moment",
              "Fit"
            ],
            "ParticleQuantity": "ThermalSpeed"
          }
        },
        {
          "Name": "Proton arrival direction",
          "ParameterKey": "Field 8",
          "Description": "Proton arrival direction in degrees from north/south with positive meaning from the south",
          "Units": "degrees",
          "Particle": {
            "ParticleType": "Proton",
            "Qualifier": "DirectionAngle.ElevationAngle",
            "ParticleQuantity": "Velocity"
          }
        },
        {
          "Name": "Predicted Helium speed",
          "ParameterKey": "Field 9",
          "Description": "Predicted (not measured) Helium speed",
          "Particle": {
            "ParticleType": "Atom",
            "ParticleQuantity": "FlowSpeed",
            "AtomicNumber": "2"
          }
        },
        {
          "Name": "GSE X",
          "ParameterKey": "Field 10",
          "Description": "GSE X Component of SOHO position vector based on predicted orbit files ( 1 Re = 6378 km )",
          "Units": "Re",
          "UnitsConversion": "6.378e6>m",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "GSE"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "GSE Y",
          "ParameterKey": "Field 11",
          "Description": "GSE Y Component of SOHO position vector based on predicted orbit files ( 1 Re = 6378 km )",
          "Units": "Re",
          "UnitsConversion": "6.378e6>m",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "GSE"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "GSE Z",
          "ParameterKey": "Field 12",
          "Description": "GSE Z Component of SOHO position vector based on predicted orbit files ( 1 Re = 6378 km )",
          "Units": "Re",
          "UnitsConversion": "6.378e6>m",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Cartesian",
            "CoordinateSystemName": "GSE"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Heliocentric Range",
          "ParameterKey": "Field 13",
          "Description": "Heliocentric Range of SOHO in 10^6 km",
          "Units": "millions of km (10^6 km)",
          "UnitsConversion": "1e9>m",
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Heliographic latitude",
          "ParameterKey": "Field 14",
          "Description": "Heliographic latitude of SOHO",
          "Units": "degrees",
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Heliographic longitude",
          "ParameterKey": "Field 15",
          "Description": "Heliographic longitude of SOHO",
          "Units": "degrees",
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Earth Carrington Rotation Number",
          "ParameterKey": "Field 16",
          "Description": "Earth Carrington Rotation Number",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        }
      ]
    }
  }
}