{
  "id": "SE_K0_AIS",
  "url": "http://hpde.io/VSPO/NumericalData/SESAME/KeyParameters/AIS/PT900S",
  "data-file": "./data/spase_hpde_io/info/SE_K0_AIS.json",
  "data": {
    "Spase": {
      "xmlns": "http://www.spase-group.org/data/schema",
      "Version": "2.2.2",
      "NumericalData": {
        "ResourceID": "spase://VSPO/NumericalData/SESAME/KeyParameters/AIS/PT900S",
        "ResourceHeader": {
          "ResourceName": "SESAME Advanced Ionospheric Sounder, Key Parameters",
          "ReleaseDate": "2020-07-03T23:28:58Z",
          "Description": "This set of key parameters from the SESAME (Satellite Experiments Simultaneous with Antartic MEasurements) ground-based experiment contains ionospheric parameters that are derived from quarter-hourly ionograms. The three parameters include the lowest plasma frequency recorded and the highest plasma frequency recorded from the E-region (MHz), and the highest plasma frequency recorded from the F-region (MHz). Please see references: (1) Grubb, RN, The NOAA SEL HF Radar system (ionospheric sounder) NOAA Tech Memo ERL SEL-55, Space Environ Lab, Boulder, CO, 1979, (2) Jarvis,MJ and Dudeney ,JR Reduction of ambiguities in HF radar results through a revised receiving array and sounding pattern. Radio Sci 21, 151-158, 1986, and (3) Dudeney, J. R. et. al., Satellite Experiments Simultaneous with Antarctic Measurements (SESAME), Space Science Reviews, Volume 71, Issue 1-4, pp. 705-742, 1995. ",
          "Contact": {
            "PersonID": "spase://SMWG/Person/J.R.Dudeney",
            "Role": "GeneralContact"
          },
          "PriorID": "spase://VSPO/NumericalData/P_SESAME_K0_AIS"
        },
        "AccessInformation": [
          {
            "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
            "Availability": "Online",
            "AccessRights": "Open",
            "AccessURL": {
              "Name": "FTPS from SPDF (not with most browsers)",
              "URL": "ftps://spdf.gsfc.nasa.gov/pub/data/sesame/ais/"
            },
            "Format": "CDF",
            "Acknowledgement": "Please acknowledge data provider, J.R. Dudeney at the British Antarctic Survey and SPDF when using these data."
          },
          {
            "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
            "Availability": "Online",
            "AccessRights": "Open",
            "AccessURL": {
              "Name": "HTTPS from SPDF",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/sesame/ais/",
              "Description": "In CDF via HTTP from CDAWeb"
            },
            "Format": "CDF",
            "Acknowledgement": "Please acknowledge data provider, J.R. Dudeney at the British Antarctic Survey and SPDF when using these data."
          },
          {
            "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
            "Availability": "Online",
            "AccessRights": "Open",
            "AccessURL": {
              "Name": "CDAWeb",
              "URL": "https://cdaweb.sci.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=SE_K0_AIS&index=sp_phys",
              "ProductKey": "SE_K0_AIS",
              "Description": "Plots, lists, and files from CDAWeb.  Name of the data resource:SE_K0_AIS"
            },
            "Format": "Text"
          }
        ],
        "ProviderProcessingLevel": "Calibrated",
        "InstrumentID": "spase://SMWG/Instrument/SESAME/AIS",
        "MeasurementType": "ThermalPlasma",
        "TemporalDescription": {
          "TimeSpan": {
            "StartDate": "1992-09-01T00:00:00.000Z",
            "StopDate": "2001-10-17T23:59:59.000Z"
          },
          "Cadence": "PT900S"
        },
        "ObservedRegion": "Earth.NearSurface.Ionosphere"
      }
    }
  }
}