{
  "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-2.7.2.xsd",
    "Version": "2.7.2",
    "Instrument": {
      "ResourceID": "spase://NOAA/Instrument/GOES/16/EXIS/EUVS",
      "NamingAuthority": "NOAA",
      "ResourceType": "Instrument",
      "ResourceHeader": {
        "ResourceName": "Extreme Ultraviolet Sensor",
        "AlternateName": "EUVS",
        "ReleaseDate": "2026-09-17T00:08:46Z",
        "Description": "The Extreme Ultraviolet Sensor (EUVS) is one of the two primary instruments in the Extreme Ultraviolet and X-Ray Irradiance Sensors (EXIS) suite on the GOES-16 spacecraft. EUVS measures solar spectral irradiance at selected extreme ultraviolet, far ultraviolet, and middle ultraviolet wavelengths.\n\nEUVS consists of three grating spectrographs, designated A, B, and C. EUVS-A measures solar emission in the 25-32 nm wavelength range, EUVS-B measures emission in the 115-141 nm range, and EUVS-C measures emission near 280 nm. The measurements include solar irradiances at selected emission lines and the Mg II core-to-wing ratio. The EUVS measurements are also used to reconstruct the solar extreme ultraviolet spectrum from 5 to 127 nm.\n\nEUVS observations are used to monitor variations in solar ultraviolet irradiance that affect the Earth's ionosphere and thermosphere, including changes associated with solar flares and longer-term solar variability.",
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/NOAA.GOES-R.EXIS",
            "Role": "GeneralContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Janet.L.Machol",
            "Role": "InstrumentScientist"
          }
        ],
        "InformationURL": {
          "Name": "GOES-R Extreme Ultraviolet and X-Ray Irradiance Sensors (EXIS)",
          "URL": "https://www.ncei.noaa.gov/products/goes-r-extreme-ultraviolet-xray-irradiance",
          "Description": "NOAA NCEI information, documentation, and data access for the GOES-R Extreme Ultraviolet Sensor (EUVS)"
        }
      },
      "InstrumentType": "Spectrometer",
      "InstrumentGroupID": "spase://NOAA/Instrument/GOES/16/EXIS",
      "InvestigationName": "Extreme Ultraviolet Sensor (EUVS)",
      "ObservatoryID": "spase://SMWG/Observatory/GOES/16",
      "ObservedRegion": [
        "Sun",
        "Sun.Chromosphere",
        "Sun.TransitionRegion",
        "Sun.Corona"
      ],
      "MeasurementType": [
        "Irradiance",
        "Spectrum"
      ]
    }
  }
}